CN106477244A - Automatic retractable belt conveyor - Google Patents

Abstract

The invention belongs to the technical field of telescopic belt conveyors used in coal mines. In order to solve the technical problems of high operating costs and low reloading efficiency of existing telescopic belt conveyors, an automatic telescopic belt conveyor is provided, which includes belts, steel truss trains, transition Trains, telescopic trains and material-receiving navigation tractors, steel truss trains include navigation noses and several steel truss gun carriages, and are hinged between several steel truss gun carriages and between the steel truss gun carriages at the end and the navigation nose. The front end of the nose and the tail end of the receiving and guiding tractor are equipped with unmanned steering mechanism, and the wheels of the guiding nose, steel truss gun carriage, transition train, telescopic train and receiving and guiding tractor are all equipped with wheel balance mechanism, and the belt is installed On steel truss trains, transition trains, telescopic trains and receiving and navigating tractors. Adoption of the present invention improves system production efficiency, reduces production cost and operating cost, and thoroughly solves the problems of low transfer efficiency and many attendant operators in the system.

Description

Automatic retractable belt conveyor

technical field

The invention belongs to the technical field of telescopic belt conveyors for coal mines, and in particular relates to an automatic telescopic belt conveyor.

Background technique

With the reform and innovation of coal mining technology, the output of coal mines has increased greatly, from blast mining to mechanical mining, from roadheaders to combined coal mining units, with daily output ranging from several hundred tons to tens of thousands of tons. In the underground mining system, the telescopic belt conveyor is still overlapped with the loader, and then used in conjunction with the lapped loader of the mining unit crushing loader. (The telescopic belt conveyor is applied in the third link). In this development process, the mining efficiency has been greatly improved, and the reloading efficiency has gradually become the bottleneck of the mining system. The existing telescopic belt conveyor has the following problems: 1. It cannot be automatically retracted, and the increase or decrease of the rack is all manual; 2. The length of the storage belt is limited, the belt is replaced frequently, the labor intensity is high, and the efficiency is low; The length of the lap is short, expansion and contraction requires personnel to work on shifts, the labor intensity is high, and there are many operators; 4. The tail is heavy and difficult to move and move; 5. There is no limit for the idlers in the belt storage warehouse, which makes it difficult to maintain by shifts; 6. When the machine length is long, the flexural strength of the tape is limited, and the flexural damage is serious. In order to solve this bottleneck problem, people have adopted the following improvement methods:

1. The forward and backward of the tail is completed by the return column winch. The telescopic belt conveyor is generally overlapped with the bridge type transfer. The effective overlapping length is 12.5 meters, that is, the maximum distance of one movement is 12.5 meters. When the tunneling crew advances 100 meters per shift, it needs to move as many as eight times. This method of movement is cumbersome, which seriously affects the mining progress, reduces the coal mining efficiency, and increases the cost of coal mining; in addition, more staff are required during the movement, which increases unsafe factors;

2. In order to improve the moving efficiency of the tail, people have invented a self-moving tail, which commonly has a horseshoe self-moving tail and a stepping self-moving tail. These two structures are simple to operate and easy to move, but still cannot change the problem of extending or shortening the frame of the telescopic belt conveyor by manual attendants.

3. The flexible belt conveyor is used for reloading. First, this kind of belt conveyor cannot walk automatically, and needs to be pulled by the excavation unit, which brings improvement to the excavation unit; The distance between the overlapping equipment is small, and there are many walking accidents; the radius of the concave arc is large, it is not easy to restrain the tape, and the tape is deviated, coal falling, and edge grinding are serious.

4. Use a flexible belt transfer machine. First, the tail of the telescopic belt conveyor overlapped with it is huge, and the movement and deviation correction are cumbersome, which takes up excavation time and many auxiliary personnel; second, the tape runs in a concave arc. Accompanied by the concave arc movement is inevitable, the deviation is serious and the material drop is serious, which affects the production; thirdly, the flexible tape transfer machine rides on the telescopic belt conveyor, which is too high and inconvenient for maintenance.

5. The improvement of the telescopic belt conveyor. With the increase of the length of the roadway, the telescopic belt conveyor has increased from the original 1,000 meters to 4,000 meters. Changing the flexibility of the tape and introducing aramid tape (which is expensive) can not be completely solved due to space constraints. A survey of waste tapes revealed that 80% of the tapes were flex damage and edging.

To sum up, how to solve this bottleneck, improve reloading efficiency, increase production safety, and reduce coal mining cost has become an urgent problem to be solved in underground coal mines.

Contents of the invention

The invention provides an automatic telescopic belt conveyor for solving the problems of high operation cost and low transfer efficiency of the existing telescopic belt conveyor.

The technical scheme that the present invention adopts is as follows:

An automatic telescopic belt conveyor, including a steel truss train, a transition train, a telescopic train, a material-receiving navigation tractor and belts, and the steel truss train, transition train, telescopic train, and material-receiving navigation tractor are articulated sequentially by hinge seats and pressure spring devices , the compression spring device is symmetrically arranged on the left and right sides of the hinged seat; the steel truss train includes a navigation head and a number of steel truss guns, and between the steel truss guns at the end and between the steel truss guns and the navigation head. Both are hinged by hinged seat and compression spring device, and the compression spring device is symmetrically arranged on the left and right sides of the hinged seat. Wheel balance mechanisms are installed on the wheels of the truss gun car, transition train, telescopic train and receiving navigation tractor, and the wheel balance mechanisms of each train are connected through Unicom oil pipes. The receiving and navigating tractor.

The steel truss gun car includes a steel truss gun car, a supporting oil cylinder, a driving wheel shaft, a driven wheel shaft and a wheel balance mechanism. A support oil cylinder is respectively installed on the left and right sides of the front and rear ends of the truss gun carriage, and the left and right sides of the middle of the steel truss are respectively equipped with a driving wheel shaft or a driven wheel shaft, and a wheel balance mechanism is respectively installed on the driving wheel shaft or the driven wheel shaft. The electrical control box, reversing pulley A, reversing pulley B, a number of idler cars, traveling cars, front pulley block, rear pulley block, constant tension winch, guide wheel and pumping station system are arranged in sequence from front to back in the storage bin , a number of idlers are connected in series through the automatic rope winding device respectively. The front end of the serialized idlers is connected with the bogie at the front end of the storage belt storage frame, and the rear end is connected with the traveling carriage. A number of upper roller groups are installed evenly in the length direction of the steel truss; between several steel truss cannons and between the steel truss cannon at the end and the navigation nose are all hinged by hinged seats and compression spring devices, and the compression springs are symmetrically arranged on the The left and right sides of the hinged seat.

The navigation head includes a head frame, an unmanned steering mechanism, a wheel balance mechanism, a driving axle, a reduction roller, a gear box, a hydraulic coupling, a motor, an unloading frame, a roller set, a head guide trough, and an unloading roller 1. Head cleaner, unmanned steering mechanism, wheel balance mechanism and steering wheel shaft are installed on the front chassis of the head frame, wheel balance mechanism and driving wheel shaft are installed on the rear chassis of the head frame, and the deceleration roller and hydraulic coupling are installed inside the head frame Gear box is installed on one side of the head frame, one end of the gear box is connected to the end of the deceleration roller without bearing seat, the other end of the gear box is connected to one end of the hydraulic coupling, and the other end of the hydraulic coupling is connected to the motor. Connected, the front end of the head frame is equipped with an unloading frame, and several idler groups are evenly spaced along the length of the unloading frame on the left and right sides above the unloading frame and the head frame, and the front of the idler group on the unloading frame is installed in sequence. Head sweeper and head chute.

Described transitional train comprises several transitional gun carriages, and described transitional artillery carriage comprises vehicle frame 1, wheel balance mechanism, driven wheel axle and transition idler group, and driven wheel axle is installed in the middle left and right sides of vehicle frame 1, and on the driven wheel axle The wheel balance mechanism is installed, and the transition roller group includes several sets of transition rollers with different heights, which are installed on the left and right sides above the frame I from high to low; The idlers are set from high to low in turn.

The telescopic train includes several mutually articulated telescopic vehicles, and the telescopic vehicle includes vehicle frame II, telescopic arms, linear motion ball bearings, front cross arm, rear cross arm, wheels, wheel balance mechanism and supporting rollers, and the wheel balance mechanism is welded On the left and right sides of the vehicle frame II, the wheels are installed on the wheel balance mechanism. The front and rear ends of the vehicle frame II are respectively provided with linear motion ball bearings and telescopic arms on the left and right sides. The telescopic arms pass through the linear motion ball bearings. One end of the shaft shoulder is stuck with the linear motion ball bearing and cannot be fully extended. The other end of the telescopic arm is respectively equipped with a front cross arm and a rear cross arm, and rollers are installed vertically on the left and right sides above the frame II; a telescopic car The front cross arm and the rear cross arm of another telescopic vehicle are connected with pin shafts, and stage clip devices are installed symmetrically on both sides of the pin shaft.

The receiving and navigating tractor includes an unmanned steering mechanism, a buffer roller, a buffer hopper, a motor-driven axle, a vehicle frame III, a driven steering wheel axle, a reversing roller and a counterweight, and an unmanned steering wheel is installed at the tail end of the vehicle frame III. Mechanism, the driven steering wheel shaft is installed under the tail end of the frame III, the motor-driven wheel shaft is installed under the front end of the frame III, and a number of buffer rollers are installed at intervals along the length direction of the frame III on the left and right sides of the frame III. The buffer funnel is installed on the top of the vehicle frame III, the rear end of the buffer idler roller on the top of the vehicle frame III is equipped with a redirection roller, and the counterweight is installed above the front end drive wheel shaft of the vehicle frame III.

The wheel balance mechanism includes a number of oil cylinder suspensions welded symmetrically on both sides of the train. The oil cylinder suspension includes a wheel axle frame, a fixed frame and a balance cylinder. The balance cylinder includes a cylinder body and a piston rod. One end of the piston rod is arranged in the cylinder body, and It forms a closed oil chamber with the cylinder body, the other end of the piston rod protrudes from the cylinder body, the balance cylinder is fixed under the fixed frame, one end of the axle frame is hinged with the fixed frame through the hinge axis A, and the middle is hinged with the piston rod through the hinge axis B , the other end of the axle frame is installed with wheels; one of the oil cylinders is suspended on the top of the balance cylinder to install a one-way oil supply valve, and the one-way oil supply valve is connected with the oil chamber of the balance cylinder, and the oil cylinders of each train are suspended through Unicom oil pipes.

The unmanned steering mechanism includes an automatic rope winding device, a servo reduction motor, a fixed mount, a rolling pressure bearing 1, a turntable frame, a stud bolt, a steel sleeve, a dust cover, a pinion, an arc rack, a steering wheel shaft, Rolling pressure bearing II, dust-proof gasket, lock plate, direction sensor and speed sensor, rolling pressure bearing I, dust cover, steel sleeve, rolling pressure bearing II and dust-proof gasket, the upper part of the steel sleeve are installed in the middle base of the turntable frame Pass through the fixed frame and install the lock plate on the upper part of the steel sleeve. The two ends of the stud bolts respectively pass through the round holes in the middle of the turntable frame and the lock plate to fix the turntable frame in the middle of the fixed frame. The left side of the turntable frame is installed with an arc Rack, the left side of the fixed frame is installed with a pinion that meshes with the arc-shaped rack, the upper end of the pinion is installed with a servo reduction motor, the steering wheel shaft is installed in the middle of the lower part of the turntable frame, and the front end of the fixed frame is installed with an automatic rope winding device. A direction sensor and a speed sensor are installed on the left and right sides of the device wire rope.

The automatic rope winding device includes a tile seat, a reel, a steel wire rope, a shaft and a scroll spring, and the scroll spring and the reel are sequentially set on the shaft. One end of the scroll spring is fixed to the shaft, and the other end is fixed to the reel. Wound on the reel, one end of the wire rope is fixed to the reel, the other end is a free end, and the tile seats are set at both ends of the shaft.

Beneficial effects of the present invention:

1. The front and rear ends of the automatic telescopic belt conveyor of the present invention are equipped with an unmanned steering mechanism, which follows the target at close range, directs the receiving and navigation tractor to pull the telescopic train to drive automatically, keeps synchronization with the target, and realizes automatic telescopic , no need for manual follow-up operations; command steel truss trains to run automatically, keep consistent with the goal, and realize the movement of the whole machine (reset of the telescopic belt conveyor), which is fast, convenient and labor-saving.

2. The bottom of the automatic retractable belt conveyor of the present invention is provided with a driving wheel shaft and a driven wheel shaft, which can walk on the road. In addition, a wheel balance mechanism is arranged at the wheels to ensure that when the road surface is uneven, even though the wheels are not on the same level , but the horizontal direction (left and right direction) of the frame is kept close to the level, so that the automatic telescopic belt conveyor can adapt to the machine mining road conditions in the downhole, and can ensure that the belt does not deviate from the blanking during the reloading process. The car is running normally, so as to realize automatic retraction and automatic walking reset.

3. The idler trolleys in the present invention are connected by an automatic rope winding device, and the length of the steel wire rope in the automatic rope winding apparatus is set to a fixed length as required, which ensures that the distance between several idler trolleys is not greater than the length of the steel rope, effectively It solves the problem that the roller trolley walks freely and the distance between the rollers is too large and it is difficult to maintain. At the same time, it achieves the purpose of increasing the space of the storage bin and increasing the length of the storage belt.

4. The tension spring devices are installed symmetrically on both sides of the articulated seat, so that the train has a certain rigidity, which offsets the lateral force of a part of the wheels, and increases the stability and centering function of the train.

5. The telescopic train in the present invention can automatically expand and contract, and the belt storage room has a large space. The telescopic length can be determined according to the excavation scale of the two shifts in the mine, so as to realize the extension or shortening of the frame without manual attendants.

6. Since the steel truss train is much higher than the telescopic train, the two cars connected in series will penetrate the tape, which will inevitably cause the tape to float up and separate from the idler group, and the tape will deviate from the restriction of the idler and fall off. A transition train is designed between the truss train and the telescopic train. The height of the transition roller set on the transition train is adapted to the concave arc track formed by the floating belt, so that the belt enters the groove, which effectively solves the problem that the belt floats and is separated from the idler set. Technical problems of deviation and blanking.

7. After the automatic expansion and contraction is realized, there is no need to replace the tape under the condition that the tape is not damaged, and it can work continuously;

8. Realize fixed-point overlap with the lower-level belt conveyor, reducing the technical requirements for the lower-level belt conveyor as well as its cost and operating cost. In the reloading system, the automatic retractable belt conveyor is applied to the second reloading link, which not only replaces the existing reloading equipment, but also does not require the lower-level belt conveyor to follow the expansion and contraction.

9. The front and back overlapping distance with adjacent equipment is short (not more than 3m), the distance between left and right is large, and the overall size is thin, long, narrow, and short. It does not interfere with other equipment during operation and is easy to maintain.

10. A buffer funnel is set at the tail, which reduces the peak transportation volume and saves the power, manufacturing cost and operating cost of the lower transportation equipment.

To sum up, the application of the automatic retractable belt conveyor will increase the system production efficiency, reduce the production cost, and completely solve the problem of difficult reloading in the system.

Description of drawings

Fig. 1 is front section front view of the present invention;

Fig. 2 is the top view of Fig. 1;

The middle section front view of Fig. 3 of the present invention;

Fig. 4 is rear section front view of the present invention;

Fig. 5 is the front view of navigation head;

Fig. 6 is the top view of navigation head;

Fig. 7 is the front view of telescopic train;

Fig. 8 is the top view of telescopic train;

Fig. 9 is the front view of transitional train;

Fig. 10 is the front view of the receiving navigation tractor;

Fig. 11 is the top view of the receiving navigation tractor;

Fig. 12 is the front view of the wheel balancing mechanism;

Figure 13 is a top view of the wheel balancing mechanism;

Fig. 14 is the structural representation of balancing cylinder;

Figure 15 is a front view of the automatic rope winding device;

Figure 16 is a top view of the automatic rope winding device;

Fig. 17 is the front view of unmanned steering mechanism;

Figure 18 is a top view of the unmanned steering mechanism;

Fig. 19 is a schematic diagram of tape winding in the tension part of the conveyor belt;

In the figure: 1-head frame, 2-unmanned steering mechanism, 3-wheel balance mechanism, 4-drive axle, 5-reduction roller, 6-gearbox, 7-hydraulic coupling, 8-motor, 9-unloader Material rack, 10-roller group, 11-head guide groove, 12-unloading roller, 13-head cleaner, 14-support cylinder, 15-driven wheel shaft, 16-storage belt rack, 17-top Plywood, 18-side splint, 19-electrical control box, 20-reversing roller A, 21-reversing roller B, 22-roller car, 23-traveling car, 24-front pulley block, 25-rear pulley block, 26- Constant tension winch, 27-guide wheel, 28-pumping station system, 29-automatic rope winding device, 30-bogie, 31-upper idler group, 32-articulated seat, 33-pressure spring device, 34-frame I , 35-transition roller group, 36-frame II, 37-telescopic arm, 38-linear motion ball bearing, 39-front cross arm, 40-rear cross arm, 41-wheel, 42-idling roller, 43-buffer Idler roller, 44-buffer funnel, 45-motor drive axle, 46-frame III, 47-driven steering wheel axle, 48-reversing roller, 49-counterweight, 50-axle frame, 51-fixed frame, 52- Balance cylinder, 53-Cylinder body, 54-Piston rod, 55-Oil chamber, 56-Hinge shaft A, 57-Hinge shaft B, 58-One-way oil supply valve, 59-Unicom oil pipe, 60-Servo gear motor, 61 -fixed frame, 62-rolling pressure bearing I, 63-turntable frame, 64-stud bolt, 65-steel sleeve, 66-dust cover, 67-pinion, 68-curved rack, 69-steering wheel shaft, 70-rolling pressure bearing II, 71-dust washer, 72-lock plate, 73-direction sensor, 74-speed sensor, 75-tile seat, 76-drum, 77-wire rope, 78-shaft, 79-scroll Spring, 80-adhesive tape, 81-navigation nose, 82-steel truss gun carriage, 83-received navigation tractor, 84-transition train, 85-telescopic train.

detailed description

As shown in Figures 1, 2, 3, and 4, an automatic retractable belt conveyor includes a steel truss train, a transition train 84, a telescopic train 85, a material receiving navigation tractor 83 and an adhesive tape 80, a steel truss train, a transition train 84, The telescopic train 85 and the receiving and navigating tractor 83 are articulated successively using the hinged seat 32 and the clip spring device 33, and the clip spring device 33 is symmetrically arranged on the left and right sides of the hinged seat 32; the steel truss train includes a navigation nose 81 and several steel bars. The truss gun carriage 82, between several steel truss gun carriages 82 and between the steel truss gun carriage 82 at the end and the navigation nose 81 are all hinged by the hinge seat 32 and the compression spring device 33, and the compression spring device 33 is symmetrically arranged on the hinge seat On the left and right sides of 32, the front end of the navigation head 81 and the tail end of the receiving navigation tractor 83 are equipped with unmanned steering mechanism 2 respectively, the navigation head 81, steel truss gun carriage 82, transition train 84, telescopic train 85 and receiving Wheel balance mechanisms 3 are installed at the lower wheels of the material navigation tractor 83, and the wheel balance mechanisms 3 of each train are connected through the Unicom oil pipe 59. The adhesive tape 80 is installed on the steel truss train, the transition train 84, the telescopic train 85 and the material receiving navigation tractor. 83 on.

As shown in Figures 5 and 6, the navigation head includes a head frame 1, an unmanned steering mechanism 2, a wheel balance mechanism 3, a driving axle 4, a reduction roller 5, a gear box 6, a hydraulic coupling 7, and a motor 8 , unloading rack 9, idler roller group 10, head guide trough 11, unloading drum 12 and head cleaner 13, unmanned steering mechanism 2 and wheel balance mechanism 3 are installed on the front end of head frame 1, and the rear of head frame 1 The wheel balance mechanism 3 and the driving wheel shaft 4 are installed at the end, the reduction drum 5, the hydraulic coupling 7 and the motor 8 are installed inside the head frame 1, and the gear box 6 is installed on one side of the head frame 1, and one end of the gear box 6 is connected to the reduction drum 5. One end of the bearing seat is connected, the other end of the gearbox 6 is connected with one end of the hydraulic coupler 7, the other end of the hydraulic coupler 7 is connected with the drive shaft of the motor 8, and the unloading frame 9 is installed above the head frame 1. A number of idler groups 10 are installed at intervals along the length direction of the unloading rack 9 on the left and right sides above the unloading rack 9, and the front of the idler groups 10 on the unloading rack 9 is sequentially installed with a head guide trough 11, an unloading roller 12 and a head cleaning Device 13.

The navigation head has four functions: 1. Drive the automatic telescopic belt conveyor to run, transport the material from the tail to the head and unload it. The design and selection are the same as the general belt conveyor. The function of the axis device and the redirection, the deceleration roller, the motor, the hydraulic coupler, etc. are installed in the inner cavity of the head frame, which reduces the overall size of the machine head and facilitates walking; 2. Installed on the front end of the steel truss train, and the steel truss cannon Cars form a steel truss train together, which is characterized in that oil cylinder suspension, driving axle and steering axle are installed under the head frame, and become a drive unit in the multi-point drive of the steel truss train. All parts of the nose become the counterweight of the drive; 3. Unmanned navigation ensures that the train is in step with the target; it is characterized by the installation of an unmanned steering mechanism, which can effectively monitor the movement trajectory of adjacent equipment and have the same orientation, so as to realize automatic Automatic reset and automatic walking of the telescopic belt conveyor; 4. Support and fix the automatic telescopic belt conveyor. When the automatic telescopic belt conveyor is running, the supporting oil cylinder is stretched out and pressed against the ground. There is a catch at the bottom of the oil cylinder to support and fix the navigation head to ensure the normal operation and automatic expansion and contraction of the belt conveyor.

As shown in Figures 1, 2, and 3, the steel truss gun carriage includes a steel truss, a support cylinder 14, a driving wheel shaft 4, a driven wheel shaft 15 and a wheel balance mechanism 3, and the steel truss is composed of two storage belt warehouse frames 16 It is formed by connecting the upper splint 17 and the side splint 18. A supporting oil cylinder 14 is respectively installed on the left and right sides of the front and rear ends of the steel truss. The wheel balance mechanism 3 is respectively installed on the driving wheel shaft 15, and the electric control box 19, the reversing roller A20, the reversing roller B21, a number of idlers 22, the traveling car 23, and the front pulley block are arranged in sequence in the storage belt storage rack 16. 24. Rear pulley block 25, constant tension winch 26, guide wheel 27 and pumping station system 28, several roller carts 22 are connected in series through automatic rope winding device 29 respectively, and the front ends of the idler carts 22 connected in series are connected to the belt storage rack The bogies 30 of 16 are connected, the rear end of the idler trolley 22 connected in series is connected with the traveling carriage 23, and several upper idler groups 31 are installed at intervals on the left and right sides of the steel truss along the length direction of the steel truss.

Generally, the driving wheel shaft 4 is installed under the last steel truss gun car, and the driven wheel shaft 15 is installed under the rest of the steel truss gun cars, and the head and tail are driven at two points; when the walking surface is poor and the slope is greater than ±6°, it can be in the middle of the train Drive axle 4 is installed below the steel truss gun carriage to form a three-point drive. The driving axles on the steel truss train are all interlocked to receive commands uniformly; the hinged seat 32 has gaps in three directions, and compression spring devices 33 are installed on both sides, which have the function of self-centering when walking, reducing the swing angle of snakes ;

The main functions of the steel truss train are: 1. Carrying and fixing the navigation head, driving device, roller car, traveling trolley, constant tension winch, pumping station, roller group, belt, guide trough, Cleaner and transport materials, etc.; 2. Establish a walking platform for roller carts and traveling trolleys, and establish a large storage space to realize the orderly driving of roller carts and traveling carts, and achieve the purpose of automatically storing and releasing tapes; 3. Realize the automatic walking of the whole machine, automatically return to the working state, and realize the purpose of continuous operation without changing parts. 4. All supporting oil cylinders are stretched out against the ground, and the bottom of the oil cylinder tray is equipped with catches to fix the automatic telescopic belt conveyor to ensure the normal operation and automatic expansion of the belt conveyor.

The steel truss train is a part of the automatic telescopic belt conveyor. Only by analyzing the dynamics of the automatic telescopic belt conveyor can the dynamics of the steel truss train be known.

The automatic retractable belt conveyor can generally be used in the second link of the downhole transfer system. Its head (unloading part) overlaps with the tail of the lower belt conveyor, and the tail overlaps with the crushing transfer machine or scraper transfer machine. The free end of the wire rope of the unmanned steering mechanism is connected with the center point of the adjacent equipment. There are two working conditions: one is the excavation condition, the automatic telescopic belt conveyor is extended, and the other is the stepping back condition, and the automatic telescopic belt conveyor is shortened. In these two working conditions, its function is to transfer, that is, to transfer the mixed coal for excavation or stepping back to the lower belt conveyor. During the excavation working condition, the telescopic train is shortened to the shortest, follows the crushing and reloading unit, and elongates with the advance of the excavation unit (including the crushing and reloading machine). Generally, the extension length is the footage (200 meters) of two mining teams. Efficiency Highest. Elongation working condition: the steel truss train grasps the ground and does not move, and the steel wire rope of the unmanned steering mechanism at the tail is freely short and connected to the midpoint of the crushing loader. The driving wheel shaft of the navigation tractor starts after receiving this signal, and drives towards the tail. The driving direction is controlled by the direction sensor. At this time, the tension of the tape increases. When the tension of the tape is greater than the set value range, the constant tension winch reverses and enters the pump. state, the wire rope is released, the swimming trolley is pulled back by the tape, and travels to the direction of the machine head, and the roller car moves closer to the direction of the machine head under the action of the automatic rope winding device, the tape is released, and the telescopic train is elongated. Until the telescopic train is synchronized with the tunneling unit; when the telescopic train is faster and exceeds the speed of the tunneling unit, the contact of the speed sensor is reversed, and the drive axle of the receiving and guiding tractor receives this signal and decelerates until the telescopic train and the tunneling unit are synchronized again. When the tape in the storage bin is fully stretched out, the first roller car touches the limit switch, and the driving wheel shaft of the receiving navigation tractor is powered off and stopped, and the brake is locked. When the tape tension decreases to the set value range, the constant tension winch is blocked. At this time, just entering the maintenance class, the telescopic train that needs to be stretched is shortened to the shortest state, and enters the next cycle. Shortening working condition: the tail (receiving and navigating tractor) is locked and does not move, the oil cylinder of the steel truss train is retracted, and enters the running working condition, the driving wheel shaft is powered on, and drives towards the tail, and the stretched telescopic train is sequentially pushed to shorten. , the tape is slack, the tape tension is less than the set value, the constant tension winch in the tape storage rack rotates forward, (entering the motor state) sequentially pulls the swimming trolley and the roller car to the tail direction, and pulls the loose tape into the storage tape Stored in the warehouse rack, when the tape is shortened to the shortest, the tape will no longer slack. When the tape tension reaches the set value range, the constant tension winch will stall, the traveling trolley and roller car will stop, and the last roller car in the storage bin will touch When the limit switch is touched, the driving axle is powered off and stopped, and the brake is locked. Stretch out the oil cylinder to press against the ground, keep the wheels off the ground, and level the steel truss. Extend the lower belt conveyor to overlap with it, and enter the elongation working condition (excavation working condition). So far, the automatic telescopic belt conveyor completes an automatic extension and automatic recovery to the excavation working condition, and it goes round and round until the excavation along the groove is completed.

This shortening condition compresses the automatic retractable belt conveyor from the longest state to the shortest state, and the whole machine moves a telescopic distance toward the tail. This shortening working condition is summarized as below: automatic reset and automatic walking of the automatic retractable belt conveyor during excavation.

When stepping back, the telescopic train stretches to the longest, the head overlaps with the tail of the lower belt conveyor, and the tail overlaps with the automatic crushing and reloading machine, and shortens as the stepping back progresses. If the telescopic length is the same as before, the daily footage is generally 12 to 20 meters. After about ten days, the telescopic train will be shortened to the shortest and enter the maintenance class. Shortening working condition: the steel truss train cylinder is fixed against the ground, and the free end of the steel wire rope of the unmanned steering mechanism at the tail is connected to the midpoint of the automatic crushing and reloading machine. After receiving this signal, control the driving device of the receiving and navigating tractor to drive towards the nose until it is synchronized with the automatic crushing and reloading machine, and at the same time push the telescopic train to shorten (the telescopic train itself has a guiding function), at this time the tape is loose, and the tape tension is less than the set Fixed value, the constant tension winch rotates forward (motor working state), and pulls the traveling car. The idler trolley runs towards the rear of the machine and stores the tape in the belt storage bin; when the telescopic train is fast and exceeds the speed of the automatic crushing and reloading machine, the contact of the speed sensor reverses, and the driving device of the receiving and guiding tractor receives this signal Then decelerate until it is synchronized with the automatic breaker and loader again. When the tape in the tape storage bin is full, the last roller car touches the limit switch, the driving device of the receiving navigation tractor is powered off and locked, the tape tension increases to the set value, and the constant tension winch is blocked. At this time, all shortened working conditions are completed, and when entering the maintenance class, it is necessary to adjust the shortened automatic telescopic belt conveyor to the longest working condition, and enter the next cycle. Elongation working condition: first shorten the lower belt conveyor and level the ground. The tail of the automatic telescopic belt conveyor does not move, the steel truss train cylinder is retracted, the steel wire rope of the unmanned steering mechanism is connected to the middle point of the tail of the lower belt conveyor, and enters the running condition, driving in the direction of the lower belt conveyor, stretching the shortened telescopic train, at this time the belt When the tension is greater than the set value, the constant tension winch reverses and enters the working state of the pump. The traveling car is pulled towards the head of the machine by the tape, the roller car automatically moves closer, and the tape storage warehouse releases the tape. A roller trolley touches the limit switch, the steel truss train is powered off, the parking lock is locked, the tape in the storage bin has been released, the tape tension is reduced to the set value, and the constant tension winch is locked. Make its nose overlap with the tail of the lower belt conveyor, the steel truss train has stopped, stretch out the oil cylinder to press against the ground, the wheels are off the ground, level the steel truss, and enter the shortening working condition. At this point, the automatic telescopic belt conveyor completes an automatic shortening and automatically returns to the stepping back working condition. Repeatedly, until the mining area is completed.

This elongation condition elongates the automatic retractable belt conveyor from the shortest state to the longest state, and the whole machine moves a telescopic distance toward the machine head. This elongation working condition is summarized as below: automatic reset and automatic walking of the automatic retractable belt conveyor when stepping back.

Working conditions of the steel truss train: 1. The steel truss train is running on the road surface of machine mining, and its unevenness is 100mm at the maximum height difference of three meters; guide to ensure that it runs straight, so that the automatic telescopic belt conveyor returns to the shortest (excavation working condition), and travels a telescopic distance toward the tail of the machine; The unmanned steering mechanism navigates to ensure that it travels in a straight line, restores the telescopic belt conveyor to the longest (back-stepped working condition), and travels a telescopic distance in the direction of the nose; After the bore of the cylinder is adjusted to correspond to the load of the steel truss gun car, the steel truss is placed horizontally on a near-horizontal plane when the road surface is uneven, which ensures the normal driving of the traveling trolley and roller trolley

To sum up, although the steel truss train has navigation at the front and guidance at the rear, under the influence of uneven road surface, the train still has a meandering error. This error is caused by the unbalanced load of the steel truss gun car and the unequal resistance of the two wheels. of. In this working condition, it is more difficult to completely eliminate this error, but it is easier to reduce this error to achieve the purpose of use. Therefore, the steel truss train is structurally arranged as follows. Steel truss trains have the following characteristics:

1. The steel truss gun frame is composed of two storage belt storage frames, which are connected by multiple single-piece steel structure bolts. Its main purpose is to facilitate underground transportation and installation;

2. Steel truss trains are hinged by steel truss gun carriages, and the hinged seats have movable gaps in three directions (rotating up, down, left, and right). Its main purpose is: 1) Make as many wheels as possible to press against the ground, and the resistances are close to equal, reduce the snake error, and ensure the life of the wheels; 2) Disperse the lateral force, reduce the lateral force of the wheel, and avoid Side slip; 3) The gap should not be too large, as long as the above two purposes are met, otherwise it will affect the stability of the train.

3. The tension spring devices are installed symmetrically on both sides of the articulated seat, so that the train has a certain rigidity, which offsets the lateral force of a part of the wheels, and plays the function of self-centering. The principle is the same as that of the train bogie.

As shown in Figure 9, the transitional train includes several transitional gun carriages. The transitional artillery carriages include a vehicle frame I34, a wheel balance mechanism 3, a driven wheel shaft 15 and a transition idler roller group 35. The left and right sides of the vehicle frame I34 The driven wheel shaft 15 is installed on the side, and the wheel balance mechanism 3 is installed on the driven wheel shaft 15. The transition roller group 35 includes several sets of transition rollers with different heights, which are installed on the left and right sides above the frame I34 from high to low; Cars are articulated with articulated seats 32 successively, and the transition idler roller groups 35 on some transition gun carriages are arranged from high to low successively, and retaining wheels are all installed on the left and right sides of the upper end of the transition idler roller groups 35 . Its characteristics are: 1. The height of the transition idler group adapts to the concave arc track formed by the floating belt on the belt, so that the belt enters the groove; 2. Due to the change of the load on the automatic retractable belt conveyor, the belt creep will be caused, and this creep is especially manifested in the concave arc section Therefore, retaining wheels are installed on both sides of the transition idler group; the above two features are to prevent adverse consequences such as falling and scratching caused by belt deviation.

As shown in Figures 7 and 8, the telescopic train includes several mutually articulated telescopic vehicles, and the telescopic vehicle includes vehicle frame II36, telescopic arm 37, linear motion ball bearing 38, front cross arm 39, rear cross arm 40, Wheel 41, wheel balance mechanism 3 and supporting roller 42, wheel balance mechanism 3 is welded on the left and right sides of vehicle frame II36, wheel 41 is installed on wheel balance mechanism 3, and the front and rear ends of vehicle frame II36 are respectively provided with straight lines on the left and right sides Motion ball bearing 38 and telescopic arm 37, telescopic arm 37 pass linear motion ball bearing 38, one end shaft shoulder of telescopic arm 37 is stuck with linear motion ball bearing 38, can not stretch out fully, the other end of telescopic arm 37 is provided with front respectively. Cross arm 39 and rear cross arm 40, the top left and right sides of vehicle frame II36 are vertically equipped with carrying roller 42;

In the automatic telescopic belt conveyor, the front end of the telescopic train is connected with the transition train, and the rear end is connected with the receiving and guiding tractor. The receiving and navigating tractor drives forward and backward to achieve the telescopic purpose of the telescopic train. It is not difficult to imagine that this kind of train will snake when it is stretching due to the lack of track restrictions and uneven ground. However, under the control of the wheel balance mechanism and the compression spring mechanism, when the speed is slow, this snake will be off-center. Smaller, and the deviation direction of the adjacent telescopic car is opposite. For the automatic telescopic belt conveyor, this deviation cancels each other out and does not affect the normal operation of the belt conveyor.

As shown in Figures 10 and 11, the receiving and navigating tractor includes an unmanned steering mechanism 2, a buffer idler roller 43, a buffer funnel 44, a motor-driven axle 45, a vehicle frame III 46, a driven steering axle 47, and a reversing roller. 48 and counterweight 49, unmanned steering mechanism 2 is installed at the tail end of vehicle frame III46, driven steering wheel shaft 47 is installed under unmanned steering mechanism 2, motor drive wheel shaft 45 is installed under the front end of vehicle frame III46, and the top of vehicle frame III46 A number of buffer rollers 43 are installed at intervals along the length direction of the vehicle frame III46 on the left and right sides. The buffer rollers are used to directly support the tape and buffer the impact of the material on the tape and the frame when receiving materials. A buffer funnel 44 is installed above the buffer roller 43. A material guide plate and a flow controller are installed at the bottom of the buffer funnel 44 to guide and control the material flow. The rear end of the buffer idler roller 43 above the vehicle frame III46 is equipped with a reversing roller 48, and the front end of the vehicle frame III46 is equipped with a counterweight 49. The counterweight 49 is used to increase the positive pressure of the motor-driven wheel shaft, so that the motor-driven wheel shaft has enough driving force.

The working principle of the material receiving navigation tractor: the material receiving navigation tractor is overlapped with the automatic crushing transfer machine (or scraper transfer machine) at the rear end of the mining unit. When installing, the front third of the buffer funnel of the material receiving navigation vehicle The unloading end of the crushing and reloading machine overlapped with it in the center, and the wire rope is pulled out to connect with the midpoint of the crushing and reloading machine. When the mining unit moves forward and backward, the steel wire rope will be pulled, and the speed sensor will pass this signal to the control system of the motor-driven axle, command the motor to drive the axle to start, follow the mining unit forward and backward, and keep in step, when the receiving navigation vehicle snakes When swinging, the steel wire rope swings accordingly, and the direction sensor senses and transmits this signal to the unmanned steering mechanism, commanding the unmanned steering mechanism to follow the mining unit in a straight line. Its main features are: 1. Traveling in a straight line without deviating from the center of the target and in step with the target; 2. Pulling the telescopic train to expand and contract; 3. Due to the large gap between the average coal consumption and the peak coal consumption of the mining unit, the buffer funnel can reduce the transportation cost. Peak volume, saving system energy and equipment cost.

As shown in Figures 12, 13, and 14, the wheel balance mechanism includes a number of oil cylinder suspensions welded symmetrically on both sides of the vehicle frame. The oil cylinder suspension includes a wheel axle frame 50, a fixed frame 51 and a balance cylinder 52, and the balance cylinder 52 includes a cylinder body. 53 and the piston rod 54, one end of the piston rod 54 is arranged in the cylinder body 53, and forms a closed oil chamber 55 with the cylinder body 53, the other end of the piston rod 54 extends out of the cylinder body 53, and the balance cylinder 52 is fixed on the fixed frame Below 51, one end of the axle frame 50 is hinged with the fixed frame 51 through the hinge shaft A56, and the middle is hinged with the hinge shaft B57 and the piston rod 54; the top of the balance cylinder 52 suspended by one of the oil cylinders is equipped with a one-way oil supply valve 58, one-way oil supply The valve 58 is connected with the oil chamber 55 of the balance cylinder 52, and all oil cylinders are suspended through the Unicom oil pipe 59, and the emulsion is pumped into the oil chamber 55 through the one-way replenishment valve 58 by a manual pipeline pump until the effective length of the piston rod (from the ground) The main feature of the wheel balance mechanism is that when the driving speed is less than or equal to 20m/min, when the ground is uneven, the frame of the telescopic vehicle is kept level and the wheels are evenly stressed.

The working principle of the wheel balance mechanism: 1. Since several balance cylinders 52 are connected with the Unicom oil pipe 59 to form a communicator, the cylinder bore corresponds to the load borne when the frame is horizontal. Nearly horizontal; 2. The telescopic car is made symmetrically. When the ground is level, the four wheels are equally stressed, that is, the pressure of the emulsion liquid surface is equal, and the frame is close to horizontal. This pressure comes from the self-weight of the telescopic car and the materials it carries; when the ground is not When leveling, the force on the four wheels is uneven, the liquid (emulsion) always flows to the place with low pressure, the piston rod 54 of the wheel with small force is stretched out, and the piston rod 54 of the wheel with large force is retracted until the liquid surface pressure is equal , At this time, the four wheels are not in a horizontal plane, but the frame of the telescopic vehicle remains nearly horizontal. For the automatic retractable belt conveyor, the corresponding road condition is downhole trough. Generally speaking, the transverse direction of the trough is nearly horizontal, the longitudinal direction is inclined, and sometimes there are concave and convex arcs. Under this road condition, the wheel balancing mechanism also can only keep the lateral near level of train. This is enough to ensure that the belt conveyor will not cause deviation and drop due to the left and right tilt of the rack. For the longitudinal direction, steel truss trains are hinged by steel truss cannon carriages, and telescopic trains are hinged by telescopic carriages. This structure can not only adapt to the uneven arc of the road surface, but also share the resulting load changes. The variation of the concave-convex arc formed by the automatic telescopic belt conveyor in the longitudinal direction is close to the variation of the concave-convex arc of the road surface. The radius of the concave-convex arc is generally relatively large, which will not cause the tape to float up and cause the tape to deviate. Of course, when the radius of the concave-convex arc is small, so that it causes the tape to float up and cause the tape to deviate, then the automatic telescopic belt conveyor cannot be used. It needs to be designed to solve the problems caused by the tape’s float and the road conditions of each train on the concave-convex arc. adaptation problem.

As shown in Figures 15 and 16, the automatic rope winding device 29 includes a tile seat 75, a reel 76, a steel wire rope 77, a shaft 78 and a scroll spring 79, and the scroll spring 79 and the scroll spring 76 are successively set on the shaft 78. One end of coil spring 79 is fixed with axle 78, and the other end is fixed with reel 76, and wire rope 77 is wound on reel 76, and one end of wire rope 77 is fixed with reel 76, and the other end is free end, and tile seat 75 is arranged on axle 78 both ends.

The working principle of automatic rope winding device 29 is: when steel wire rope 77 is subject to certain external force, scroll spring 79 compresses, and steel rope 77 is pulled out, otherwise, scroll spring 79 expands, and steel rope 77 retracts. It works on the same principle as a tape measure.

In the present invention, the automatic rope winding device 29 is used to control the spacing of the idler trolley 22. In the storage belt storage rack, the tile seat 75 of the automatic rope winding device 29 is installed and fixed on one end of the idler trolley 22, and the steel wire rope 77 suspension ring One end is fixed with the other end of another idler car 22, and the effective extension length control of steel wire rope 77 is 3 meters. In this way, the idler trolleys 22 are connected in series repeatedly, and the front end of the serially connected idler trolleys 22 is connected with the bogie 30, and the rear end is connected with the trolley 23, and the connection method is the same as before. When there was no external force, the automatic rope winding device 29 tightened the idler car 22 and moved closer together. When the telescopic belt conveyor is extended, the traveling car 23 walks to the tail, and the traction roller car 22 walks successively. The steel rope 77 of the first automatic rope winding device 29 is pulled out, and after the steel rope 77 stretches out 3 meters, it does not stretch out. Will traction next roller trolley 22 walks, pull out the steel wire rope of next automatic rope winding device 29; By analogy, when telescoping belt conveyor completes all elongation, idler trolley 22 is all pulled away, will enter next cycle. Otherwise, when telescopic belt conveyor shortens, traveling car 23 travels to nose, and steel wire rope 77 is slack, and scroll spring 79 expands, and steel wire rope 77 retracts. By analogy, when the telescopic belt conveyor completes all shortening, the idler trolley 22 all draws close, and will enter the next cycle. The automatic rope winding device 29 can guarantee that the spacing of some idlers 22 is no greater than the length 3 meters of the wire rope 77, which solves the problem that the idlers 22 walk freely and the interval between the idlers is too large and difficult to maintain.

As shown in Figures 17 and 18, the unmanned steering mechanism 2 includes an automatic rope winding device 29, a servo reduction motor 60, a fixed frame 61, a rolling pressure bearing 162, a turntable frame 63, a stud bolt 64, a steel sleeve 65, Dust cover 66, pinion 67, arc rack 68, steering wheel shaft 69, rolling pressure bearing II70, dustproof gasket 71, lock plate 72, direction sensor 73 and speed sensor 74, the middle base of turntable frame 63 is installed rolling Pressure bearing I62, dust cover 66, steel sleeve 65, rolling pressure bearing II70 and dustproof gasket 71, the upper part of steel sleeve 65 passes through fixed frame 61, and lock plate 72 and stud bolt 64 are installed on the upper part of steel sleeve 65 The two ends of the two ends pass through the circular hole in the middle of the turntable frame 63 and the lock plate 72 to fix the turntable frame 63 in the middle of the fixed frame 61, the left side of the rotary table frame 63 is equipped with an arc rack 68, and the left side of the fixed frame 61 is installed with an arc. The pinion 67 that gear rack 68 meshes, and the upper end of pinion 67 is installed servo reduction motor 60, and the steering wheel shaft 69 is installed in the middle of the bottom of turntable frame 63, and steering wheel shaft 69 is fixed in the middle of turntable frame 63 by skids and U-shaped bolts, Turntable frame 63 left and right sides are connected with fixed mount 61 with extension spring device, and the front end of fixed mount 61 is equipped with automatic winding rope device 29, and direction sensor 73 and speed sensor 74 are installed on automatic winding rope device 29.

The main function of the unmanned steering mechanism 2 is that the unmanned steering mechanism 2 is installed on the front end of the navigation vehicle to follow the target at close range and synchronize with the target to realize unmanned driving.

The working principle of the unmanned steering mechanism: the unmanned steering mechanism 2 is installed on the front end of the navigation vehicle, and the wire rope 77 is pulled out to connect with the target midpoint. When the target moves forward and backward, the wire rope 77 will be pulled, and the speed sensor 74 will pass this signal to the control system of the motor-driven axle of the navigation vehicle after sensing, command the motor-driven axle of the navigation vehicle to start, and follow the target forward and backward. When the speed of the navigation vehicle exceeds the target speed , the speed sensor 74 contact pulley reverses, and this signal is delivered to the control system of the motor drive axle of the navigation car, and the navigation car decelerates until it is synchronized with the target again. When the navigation vehicle deviates from the running direction, the wire rope 77 swings accordingly, and the direction sensor 73 senses and transmits this signal to the control system of the unmanned steering mechanism to direct the unmanned steering mechanism to correct the driving direction of the navigation vehicle and follow the driving unit.

The preparation before assembly and use of the present invention: the first step, connect the steel truss train, the concave arc transition train, the telescopic train and the receiving navigation tractor with the hinged seat and the compression spring device in turn; the second step, according to Fig. 19 The tape winding method in the tape is inserted into the tape, and the tape joints can be vulcanized joints; the third step is to connect the cables (including input cables, travel cables, brake cables, steering cables, winch cables, pump station cables, control cables and host Cable) is suspended and fixed on one side of the train, first connect the motor and the electrical control box, then connect to the self-moving power station, and connect the power supply; the fourth step, adjust (increase or decrease) the emulsion liquid level of the balance cylinder again, so that the tape is completely Enter the tank; the fifth step is to debug the pump station motor, oil cylinder, main motor, winch motor, belt conveyor, steering motor, and travel motor in sequence, and put them into use after they are all normal.

Beneficial effects of the present invention:

1. The front and rear ends of the automatic telescopic belt conveyor of the present invention are equipped with an unmanned steering mechanism, which follows the target at close range, directs the receiving and navigation tractor to pull the telescopic train to drive automatically, keeps synchronization with the target, and realizes automatic telescopic , without manual follow-up operations; command steel truss trains to run automatically, keep consistent with the target, realize automatic reset and automatic walking, fast and convenient, and save labor.

2. The bottom of the automatic retractable belt conveyor of the present invention is provided with a driving wheel shaft and a driven wheel shaft, which can walk on the road. In addition, a wheel balance mechanism is arranged at the wheels to ensure that when the road surface is uneven, even though the wheels are not on the same level , but the frame is kept nearly horizontal in the horizontal direction, so that the tape can be guaranteed not to deviate from the blanking during the reloading process, and the traveling car and roller car run normally during the moving process, so as to realize automatic expansion and reset.

3. The idler trolleys in the present invention are connected by an automatic rope winding device, and the length of the steel wire rope in the automatic rope winding apparatus is set to a fixed length as required, which ensures that the distance between several idler trolleys is not greater than the length of the steel rope, effectively It solves the problem that the roller trolley walks freely and the distance between the rollers is too large and it is difficult to maintain. At the same time, it achieves the purpose of increasing the space of the storage bin and increasing the length of the storage belt.

4. The tension spring devices are installed symmetrically on both sides of the articulated seat, so that the train has a certain rigidity, which offsets the lateral force of a part of the wheels, and increases the stability and centering function of the train.

5. The telescopic train in the present invention can automatically expand and contract, and the belt storage room has a large space. The telescopic length can be determined according to the excavation scale of the two shifts in the mine, so as to realize the extension or shortening of the frame without manual attendants.

6. Since the steel truss train is much higher than the telescopic train, the two cars connected in series will penetrate the tape, which will inevitably cause the tape to float up and separate from the idler group, and the tape will deviate from the restriction of the idler and fall off. A transition train is designed between the truss train and the telescopic train. The height of the transition roller set on the transition train is adapted to the concave arc track formed by the floating belt, so that the belt enters the groove, which effectively solves the problem that the belt floats and is separated from the idler set. Technical problems of deviation and blanking.

7. After the automatic expansion and contraction is realized, there is no need to replace the tape under the condition that the tape is not damaged, and it can work continuously;

8. Realize fixed-point overlapping, reduce the technical requirements for the next-level belt conveyor as well as its cost and operating cost. In the reloading system, the automatic retractable belt conveyor is applied to the second reloading link, which not only replaces the existing reloading equipment, but also does not require the lower belt conveyor to expand and contract.

9. The front and back overlapping distance with adjacent equipment is short (not more than 3m), the distance between left and right is large, and the overall size is thin, long, narrow, and short. It does not interfere with other equipment during operation and is easy to maintain.

10. A buffer funnel is set at the tail, which reduces the peak transportation volume and saves the power, manufacturing cost and operating cost of the lower transportation equipment.

To sum up, the application of the automatic retractable belt conveyor will increase the system production efficiency, reduce the production cost, and completely solve the problem of difficult reloading in the system.

Claims (9)

1. An automatic retractable belt conveyor, characterized in that: it comprises a steel truss train, a transition train (84), a telescopic train (85), a material-receiving navigation tractor (83) and an adhesive tape (80), a steel truss train, a transition train (84), the telescopic train (85), and the receiving and navigating tractor (83) are sequentially hinged using the hinged seat (32) and the compression spring device (33), and the compression spring device (33) is symmetrically arranged on the left and right sides of the hinged seat (32) On both sides; the steel truss train includes a navigation nose (81) and several steel truss gun carriages (82), between the steel truss gun carriages (82) and at the end of the steel truss carriage (82) and the navigation nose (81) are hinged by hinged seat (32) and compression spring device (33). The tail end of the material navigation tractor (83) is respectively equipped with an unmanned steering mechanism (2), a navigation nose (81), a steel truss gun carriage (82), a transition train (84), a telescopic train (85) and a material receiving navigation Wheel balancing mechanisms (3) are installed at the lower wheels of the tractor (83), and all wheel balancing mechanisms (3) are connected through Unicom oil pipes (59). The adhesive tape (80) is installed on steel truss trains, transition trains (84), On telescopic train (85) and material receiving navigation tractor (83). 2. An automatic retractable belt conveyor according to claim 1, characterized in that: the steel truss gun carriage includes a steel truss, a supporting cylinder (14), a driving axle (4), a driven axle (15) and wheels The balance mechanism (3), the steel truss is composed of two storage belt storage racks (16) connected by the upper splint (17) and the side splint (18), and a supporting oil cylinder is respectively installed on the left and right sides of the front and rear ends of the steel truss (14), the driving wheel shaft (4) or the driven wheel shaft (15) are respectively installed on the left and right sides of the steel truss, and the wheel balance mechanism (3) is respectively installed on the driving wheel shaft (4) or the driven wheel shaft (15), and the belt storage bin The electric control box (19), reversing roller A (20), reversing roller B (21), several idlers (22), traveling car (23), and front pulley block are arranged in the frame (16) in sequence from front to back (24), rear pulley block (25), constant tension winch (26), guide wheel (27) and pumping station system (28), and several idlers (22) are connected in series through the automatic rope winding device (29) successively, The front end of the series idler trolley (22) is connected with the bogie (30) of the belt storage frame (16), the rear end of the series idler trolley (22) is connected with the traveling carriage (23), and the steel truss above Several upper roller groups (31) are installed at intervals along the length direction of the steel truss on the left and right sides. 3. An automatic telescopic belt conveyor according to claim 1, characterized in that: the navigation head includes a head frame (1), an unmanned steering mechanism (2), a wheel balance mechanism (3), and a driving wheel shaft (4), reduction roller (5), gear box (6), hydraulic coupling (7), motor (8), unloading frame (9), idler roller group (10), head guide groove (11 ), the unloading drum (12) and the head cleaner (13), the unmanned steering mechanism (2) and the wheel balance mechanism (3) are installed on the front end of the head frame (1), and the wheel balance is installed on the rear end of the head frame (1) Mechanism (3) and drive axle (4), head frame (1) is installed inside the reduction roller (5), hydraulic coupling (7) and motor (8), one side of the head frame (1) is installed gearbox (6 ), one end of the gear box (6) is connected to the end of the deceleration roller (5) without bearing seat, the other end of the gear box (6) is connected to one end of the hydraulic coupling (7), and the hydraulic coupling (7) The other end is connected with the drive shaft of the motor (8), and the unloading frame (9) is installed above the head frame (1), and the left and right sides above the unloading frame (9) are installed at intervals along the length direction of the unloading frame (9). The idler group (10), the front of the idler group (10) on the unloading frame (9) is installed with the head material guide groove (11), the unloading drum (12) and the head cleaner (13) in sequence. 4. A kind of automatic retractable belt conveyor according to claim 1, characterized in that: the transition train includes several transition artillery carriages, and the transition carriages include vehicle frame 1 (34), wheel balance mechanism (3), from The driving wheel shaft (15) and the transition roller group (35), the driven wheel shaft (15) is installed on the left and right sides of the middle of the frame I (34), the wheel balance mechanism (3) is installed on the driven wheel shaft (15), and the transition support The roller group (35) includes several sets of transition rollers with different heights, which are installed on the left and right sides above the vehicle frame I (34) from high to low; The set of transition rollers (35) is set from high to low in turn. 5. An automatic telescopic belt conveyor according to claim 1, characterized in that: the telescopic train includes several mutually articulated telescopic carriages, and the telescopic carriages include frame II (36), telescopic arm (37) , linear motion ball bearing (38), front cross arm (39), rear cross arm (40), wheel (41), wheel balance mechanism (3) and idler roller (42), wheel balance mechanism (3) is welded on the vehicle The left and right sides of the frame II (36), the wheels (41) are installed on the wheel balance mechanism (3), and the front and rear ends of the vehicle frame II (36) are respectively provided with linear motion ball bearings (38) and telescopic arms on the left and right sides (37), the telescopic arm (37) passes through the linear motion ball bearing (38), the shaft shoulder at one end of the telescopic arm (37) is stuck with the linear motion ball bearing (38), and cannot be fully extended, the telescopic arm (37) The other end is respectively provided with a front cross arm (39) and a rear cross arm (40), and idler rollers (42) are vertically installed on the left and right sides above the vehicle frame II (36); the front cross arm (39) of a telescopic vehicle It is connected with a pin shaft with the rear cross arm (40) of another telescopic car. 6. An automatic retractable belt conveyor according to claim 1, characterized in that: the receiving navigation tractor includes an unmanned steering mechanism (2), a buffer roller (43), a buffer funnel (44), Motor drive wheel shaft (45), vehicle frame III (46), driven steering wheel shaft (47), reversing drum (48) and counterweight (49), the tail end of vehicle frame III (46) is equipped with unmanned steering mechanism ( 2), the driven steering wheel shaft (47) is installed under the unmanned steering mechanism (2), the motor drive wheel shaft (45) is installed under the front end of the frame III (46), and the left and right sides of the frame III (46) are A number of buffer rollers (43) are installed at intervals in the length direction of the frame III (46), a buffer funnel (44) is installed above the buffer rollers (43), and the rear end of the buffer rollers (43) is installed above the frame III (46) Install reversing drum (48), and the front end of vehicle frame III (46) is installed counterweight (49). 7. A kind of automatic retractable belt conveyor according to any one of claims 1-6, characterized in that: the wheel balance mechanism includes several oil cylinder suspensions welded symmetrically on both sides of the vehicle frame, and the oil cylinder suspensions include wheel brackets ( 50), a fixed frame (51) and a balance cylinder (52), the balance cylinder (52) includes a cylinder body (53) and a piston rod (54), and one end of the piston rod (54) is arranged in the cylinder body (53), and A closed oil chamber (55) is formed with the cylinder body (53), the other end of the piston rod (54) protrudes from the cylinder body (53), the balance cylinder (52) is fixed under the fixed frame (51), and the axle frame (50 ) one end is hinged with the fixed frame (51) through the hinged shaft A (56), and the middle is hinged with the hinged shaft B (57) and the piston rod (54); one-way oil supply is installed on the top of the balance cylinder (52) suspended by one of the oil cylinders The valve (58), one-way oil supply valve (58) are in communication with the oil chamber (55) of the balance cylinder (52), and all oil cylinder suspensions are communicated through the Unicom oil pipe (59). 8. An automatic retractable belt conveyor according to any one of claims 1-6, characterized in that: the unmanned steering mechanism (2) includes an automatic rope winding device (29), a servo reduction motor (60) , fixed frame (61), rolling pressure bearing I (62), turntable frame (63), stud bolt (64), steel sleeve (65), dust cover (66), pinion (67), arc-shaped tooth Bar (68), steering wheel shaft (69), rolling pressure bearing II (70), dustproof gasket (71), lock plate (72), direction sensor (73) and speed sensor (74), turntable frame (63) Rolling pressure bearing I (62), dust cover (66), steel sleeve (65), rolling pressure bearing II (70) and dust washer (71) are installed in the middle base, and the upper part of the steel sleeve (65) is passed through and fixed frame (61), and install the lock plate (72) on the upper part of the steel sleeve (65), and the two ends of the stud bolts (64) respectively pass through the round holes in the middle of the turntable frame (63) and the lock plate (72) to lock the turntable The frame (63) is fixed in the middle of the fixed frame (61), and the left side of the turntable frame (63) is equipped with an arc rack (68), and the left side of the fixed frame (61) is installed with a small rack meshed with the arc rack (68). Gear (67), the servo reduction motor (60) is installed on the upper end of the pinion (67), the steering wheel shaft (69) is installed in the middle of the bottom of the turntable frame (63), and the automatic rope winding device (29) is installed on the front end of the fixed frame (61) , direction sensor (73) and speed sensor (74) are installed on the automatic rope winding device (29). 9. An automatic retractable belt conveyor according to any one of claims 2-6, characterized in that: the automatic rope winding device (29) includes a tile seat (75), a reel (76), a steel wire rope (77 ), the shaft (78) and the scroll spring (79), the scroll spring (79) and the reel (76) are successively set on the shaft (78), one end of the scroll spring (79) is fixed with the shaft (78), and the other One end is fixed to the reel (76), the wire rope (77) is wound on the reel (76), one end of the wire rope (77) is fixed to the reel (76), the other end is a free end, and the tile seat (75) is arranged on the shaft (78) both ends.