CN109915147B - Quick-connecting transportation unit for open-sky highwall exploitation - Google Patents
Quick-connecting transportation unit for open-sky highwall exploitation Download PDFInfo
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- CN109915147B CN109915147B CN201910222904.1A CN201910222904A CN109915147B CN 109915147 B CN109915147 B CN 109915147B CN 201910222904 A CN201910222904 A CN 201910222904A CN 109915147 B CN109915147 B CN 109915147B
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Abstract
The invention belongs to the technical field of belt transportation, and particularly relates to a quick-connection transportation unit for open-air highwall mining. Including support body, driving roll, gear motor, bend pulley, quick change connecting device, automatic overspeed device tensioner, bearing roller subassembly and conveyer belt, quick change connecting device sets up the both ends at the support body, quick change connecting device include front end engaging lug, rear end engaging lug, connecting pin and quick-connect block, front end engaging lug and rear end engaging lug set up respectively at the both ends of support body, the quick-connect transportation unit of two adjacent open-air highwall exploitation is connected through front end engaging lug and rear end engaging lug, automatic overspeed device tensioner realizes the tensioning of conveyer belt through the tensioning slider free slip among them in the slide of support body, hang gear motor on driving roll's the output shaft, driving roll and gear motor are whole to be installed on the support body, the bearing roller subassembly is laid in the corresponding draw-in groove of support body, set up the conveyer belt on the bearing roller subassembly. The invention enables quick connection and automatic tensioning of the transport unit.
Description
Technical Field
The invention belongs to the technical field of belt transportation, and particularly relates to a quick-connection transportation unit for open-air highwall mining.
Background
The end slope coal mining is to fully utilize the space exposure condition of a stope in the open pit coal mining process, and recycle the residual coal outside the boundary of the open pit mine by using a well mining method, and the end slope coal mining is used as a main supplement for the open pit and well mining technology. Due to the technical limitations and imperfect exploitation means, the end slope exploitation process is always blank in China, and a large amount of thin coal seam resources are discarded. The quick continuous conveying unit for open-sky highwall mining is a main component of highwall mining conveying system, a continuous miner enters a chamber for coal mining, and a plurality of conveying units are connected in series and immediately behind the continuous miner to convey the coal cut by the continuous miner to the outside of the chamber. The connection mode between the transport units directly influences the transport efficiency of the system; as the underground chamber for highwall mining does not need supporting, once collapse occurs, the rapid continuous transportation unit also plays a role of dragging the continuous mining machine; the conveyer belt of any one of the conveying units in the whole conveying system slips, the whole system is paralyzed, and all the conveying units are required to be pulled out and then are processed and then pushed into the chamber for conveying. Therefore, the quick-connection transportation unit needs to have strong transportation capability and high frame strength, can be quickly connected, and has the function of preventing the conveyer belt from slipping.
Disclosure of Invention
The invention aims to solve the problems and provides a quick-connection transportation unit for open highwall mining.
The invention adopts the following technical scheme: the utility model provides an open-air highwall exploitation's quick-connect transportation unit, includes support body, drive drum, gear motor, bend pulley, quick change connecting device, automatic overspeed device tensioner, steel wheel subassembly, bearing roller subassembly and conveyer belt, quick change connecting device set up the both ends at the support body, quick change connecting device include front end engaging lug, rear end engaging lug, connecting pin and quick-connect block, front end engaging lug and rear end engaging lug set up respectively at the both ends of support body, adjacent two open-air highwall exploitation's quick-connect transportation unit passes through front end engaging lug and rear end engaging lug connection, the front end engaging lug on be provided with the round hole I that can let the connecting pin pass and can let quick-connect block male recess, round hole I and recess cross set up and round hole I pass the recess, the rear end engaging lug including setting up both sides's otic placode, round pin hub connection is in the recess, quick-connect block is last to be provided with round hole II that corresponds with round hole I, the connecting pin inserts at the both ends of support roller I and round hole II in the support body, drive pulley automatic tension pulley bracket body and the corresponding pulley of drive drum, the drive pulley is fixed with the corresponding pulley assembly through the drive drum, the drive drum is realized to the support body, the bearing roller is fixed with the corresponding pulley assembly in the support body, and the pulley is fixed to the bottom of the support body.
Further, the bottom of the groove is of a semicircular structure, the diameter of the semicircular structure is the same as that of the pin shaft, the pin shaft is clamped in the semicircular structure, an open angle is arranged on the outer side of the semicircular structure, an arc-shaped groove is formed in the front end of the quick insert block, the arc-shaped groove is clamped on the pin shaft, a limiting angle is arranged between the upper side and the lower side of the quick insert block and the groove, and the limiting angle range is +/-6 degrees.
Further, the automatic tensioning device comprises an electro-hydraulic push rod, a connecting seat and a tensioning roller, wherein the electro-hydraulic push rod is connected with the connecting seat, the connecting seat is connected with the tensioning roller, the connecting seat slides on a slideway on the frame body, and a pressure sensor is arranged in the electro-hydraulic push rod.
Compared with the prior art, the invention realizes the quick connection of the transport unit and the automatic tensioning of the belt. The quick-change connecting device is designed, so that the quick-change time is greatly improved, and the sufficient strength is ensured; and design an automatic overspeed device tensioner of belt, put forward a control strategy that prevents that the conveyer belt from skidding, can tighten the conveyer belt in real time, also can be fine handle the skidding of belt, be unlikely to drag out the entire system and maintain when the transportation unit appears skidding, improved the efficiency of highwall exploitation greatly.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram showing the connection of the components to the frame
Fig. 3 schematic diagram of the connection of the return idler with the frame
FIG. 4 is a partially exploded view of the quick change coupling device;
FIG. 5 is a cross-sectional view of the quick change coupler;
FIG. 6 is a schematic diagram of the connection of the tensioner to the frame;
FIG. 7 is a schematic diagram of an automatic tensioner configuration;
In the figure, the frame body, the 2-transmission roller, the 3-gear motor, the 4-bend roller, the 5-quick-change connecting device, the 6-automatic tensioning device, the 7-steel wheel assembly, the 8-electric cabinet, the 9-carrier roller assembly, the 10-conveyor belt, the 11-front end connecting lug, the 12-rear end connecting lug, the 13-connecting pin, the 14-quick-insertion block, the 15-electrohydraulic push rod, the 16-connecting seat, the 17-tensioning roller, the 18-steel wheel pressing block, the 19-return carrier roller, the 20-U-shaped clamp, the 21-groove, the 22-round hole I, the 23-round hole II and the 24-arc groove are arranged.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figure 1, a quick-connection transportation unit for highwall exploitation comprises a frame body 1, a transmission roller 2, a gear motor 3, a bend roller 4, a quick-change connecting device 5, an automatic tensioning device 6, a steel wheel assembly 7, an electric cabinet 8, a carrier roller assembly 9, a conveyer belt 10 and the like, wherein the operation flow of the transportation unit is that the gear motor drives the transmission roller, the transmission roller drives the conveyer belt again, coal of a previous transportation unit is conveyed from the tail to the head of the transportation unit and then onto a next transportation unit, continuous transportation of the coal is realized, the electric cabinet realizes start and stop of a belt of the transportation unit through remote control, the quick-change device realizes quick connection between the two transportation units, the tensioning device tensions the belt in real time to prevent the belt from skidding, the steel wheel assembly plays a supporting role when the transportation unit is dragged to walk, and the carrier roller assembly is a necessary component of a belt conveyor.
The components in FIG. 2 are connected with a frame body in a schematic way, a gear motor 3 is connected with a transmission roller 2, the transmission roller is fixed on the frame body through bolts, the direction-changing roller 4 is fixed at two ends of the frame body through bolts, a steel wheel assembly 7 is fixed at the bottom of the frame body through bolts by a steel wheel pressing block 18, and a carrier roller assembly is arranged at a corresponding clamping groove of the frame body.
As shown in fig. 3, the return idler roller is connected with the frame body in a schematic way, and the return idler roller 19 is fixed in a clamping groove at the lower part of the frame body through a U-shaped clamp 20.
As shown in fig. 4, the quick-change connection device comprises a front end connection lug 11, a rear end connection lug 12, a connection pin 13 and a quick-insert block 14, wherein the front end connection lug 11 and the rear end connection lug 12 are respectively arranged at two ends of the frame body 1, two adjacent quick-connect transportation units mined by the open highwall are connected through the front end connection lug 11 and the rear end connection lug 12, a round hole I22 capable of allowing the connection pin 13 to pass through and a groove 21 capable of allowing the quick-insert block 14 to be inserted are arranged on the front end connection lug 11, the round hole I22 and the groove 21 are arranged in a crisscross manner, the round hole I22 passes through the groove 21, the rear end connection lug 12 comprises lug plates arranged at two sides, the two lug plates are connected through pin shafts, the pin shafts are clamped in the groove 21, the quick-insert block 14 is simultaneously inserted in the groove 21, a round hole II23 corresponding to the round hole I22 is formed in the quick-insert block 14, the two transportation units are firstly butted at the head and the tail of the front end connection lug 12, and then the two transportation units are connected through the front end connection lug 11 and the front end connection lug 12 is aligned with the front end connection lug 11.
Fig. 5 is a cross-sectional view of the quick-change connection device, since the connection between the quick-connection transport units needs to be quick, and sufficient strength is ensured, the quick-insertion block 14 is introduced into the design, so that the stress of the pin shafts is ensured to be in surface contact when the transport units are pulled and pushed, and when the transport units are in uneven roadways or go up and down slopes, a certain swing angle is formed between the two transport units, and the swing angle is limited by the angle of the quick-insertion block.
Fig. 6 is a schematic diagram of connection between the tensioner and the frame, and fig. 7 is a schematic diagram of structure of the automatic tensioner. As can be seen from fig. 7, the automatic belt tensioning device comprises an electro-hydraulic push rod 15, a connecting seat 16 and a tensioning roller 17, wherein the electro-hydraulic push rod 15 is connected with the connecting seat 16, the connecting seat 16 is connected with the tensioning roller 17, and the connecting seat 16 slides on a slideway on the frame body. During operation, the two electro-hydraulic push rods push out and retract simultaneously to realize tensioning of the belt, the pressure sensor is arranged in the electro-hydraulic push rod 15 to detect the tensioning force, and whether the oil cylinder needs to extend continuously or not is judged according to the pressure, so that the tensioning force is increased. Meanwhile, the whole conveying system is further provided with a belt speed measuring sensor, and once the slip energy of the conveying belt is detected in time. The specific control mode is to set two control modes in a program, and the control modes are normal operation and slipping.
1. Under normal conditions, the system detects the pressure of the pressure sensor, if the pressure sensor does not reach a set value, the tension is insufficient, the oil cylinder needs to be stretched continuously to realize the tension, when the pressure sensor reaches the set value, the electro-hydraulic push rod motor stops rotating, the hydraulic lock is self-locked, and the belt runs normally.
2. When the belt speed sensor detects abnormal belt speed, the belt speed sensor indicates that the belt speed is abnormal, the belt is required to be tensioned, the electrohydraulic push rod motor rotates to push the piston rod to be tensioned, when the belt speed is detected to be normal, certain time delay is given in a program, larger coal blocks smoothly pass through the conveyor, the conveyor is restored to a value set by the normal pressure sensor (the service life of the whole conveying system can be shortened due to overlarge tension, a certain belt tension value is required to be set, the smaller the belt tension value is on the premise of meeting the operation, the better the belt tension value is), the electrohydraulic push rod is retracted, the electrohydraulic push rod stops running when the set value of the pressure sensor is reached, and the hydraulic lock is self-locking. This allows for good handling of the slip of the conveyor.
Claims (3)
1. The utility model provides a quick continuous transportation unit of open-air highwall exploitation which characterized in that: the quick-change connecting device (5) comprises a frame body (1), a transmission roller (2), a gear motor (3), a direction-changing roller (4), a quick-change connecting device (5), an automatic tensioning device (6), a steel wheel assembly (7), a carrier roller assembly (9) and a conveying belt (10), wherein the quick-change connecting device (5) is arranged at two ends of the frame body (1), the quick-change connecting device (5) comprises front-end connecting lugs (11), rear-end connecting lugs (12), connecting pins (13) and quick-insertion blocks (14), the front-end connecting lugs (11) and the rear-end connecting lugs (12) are respectively arranged at two ends of the frame body (1), two adjacent quick-connection conveying units for open-air side exploitation are connected through the front-end connecting lugs (11) and the rear-end connecting lugs (12), round holes I (22) capable of allowing the connecting pins (13) to penetrate through and grooves (21) capable of allowing the quick-insertion blocks (14) to be inserted into are arranged on the front-end connecting lugs (11), the round holes I (22) and the grooves (21) are arranged in a cross mode and the round holes I (22) penetrate through the grooves (21) respectively, the front-end connecting lugs (11) and the rear-end connecting lugs (12) are arranged at two sides of the front-end connecting lugs (12) and the front-end connecting lugs (12) are arranged in the two sides of the frame body through the front-connection lugs and the front-end connecting lugs (14) and the front-connection device and the rear connecting device. The quick-inserting block (14) is provided with a round hole II (23) corresponding to the round hole I (22), the connecting pin (13) is inserted into the round hole I (22) and the round hole II (23), both ends of the frame body (1) are also provided with a direction-changing drum (4), the automatic tensioning device (6) freely slides in a slideway of the frame body through a tensioning sliding block in the direction-changing drum to realize the tensioning of the conveying belt, a speed reducing motor (3) is hung on an output shaft of the transmission drum (2), the transmission drum (2) and the speed reducing motor (3) are integrally arranged on the frame body, a carrier roller assembly (9) is placed in a corresponding clamping groove of the frame body (1), a conveying belt (10) is arranged on the carrier roller assembly (9), a steel wheel assembly (7) is fixed at the bottom of the frame body through a steel wheel pressing block, and a return carrier roller (19) is fixed in a lower clamping groove of the frame body (1) through a U-shaped clamp (20); the bottom of the groove (21) is of a semicircular structure, the diameter of the semicircular structure is the same as that of the pin shaft, the pin shaft is clamped in the semicircular structure, an open angle is arranged on the outer side of the semicircular structure, an arc-shaped groove (24) is formed in the front end of the quick-inserting block (14), the arc-shaped groove (24) is clamped on the pin shaft, and a limited angle is arranged between the upper side and the lower side of the quick-inserting block (14) and the groove (21).
2. The surface highwall mining quick connect transportation unit of claim 1, wherein: the limit angle range is +/-6 degrees.
3. The surface highwall mining quick connect transportation unit of claim 1, wherein: the automatic tensioning device (6) comprises an electro-hydraulic push rod (15), a connecting seat (16) and a tensioning roller (17), wherein the electro-hydraulic push rod (15) is connected with the connecting seat (16), the connecting seat (16) is connected with the tensioning roller (17), the connecting seat (16) slides on a slideway on the frame body, and a pressure sensor is arranged in the electro-hydraulic push rod (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222904.1A CN109915147B (en) | 2019-03-22 | 2019-03-22 | Quick-connecting transportation unit for open-sky highwall exploitation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222904.1A CN109915147B (en) | 2019-03-22 | 2019-03-22 | Quick-connecting transportation unit for open-sky highwall exploitation |
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| CN109915147A CN109915147A (en) | 2019-06-21 |
| CN109915147B true CN109915147B (en) | 2024-05-17 |
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| CN201910222904.1A Active CN109915147B (en) | 2019-03-22 | 2019-03-22 | Quick-connecting transportation unit for open-sky highwall exploitation |
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| CN113753504B (en) * | 2021-09-28 | 2022-09-09 | 中国矿业大学 | Spiral coal conveying device |
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| GB750709A (en) * | 1953-01-23 | 1956-06-20 | Eisenwerke Gelsenkirchen Ag | Means for feeding molten metal to moulds in continuous casting processes |
| DE19941799A1 (en) * | 1998-09-05 | 2000-06-15 | Man Takraf Foerdertechnik Gmbh | Continuous surface miner for mineral raw materials in sedimentary layers has three-track running gear connected by substructure frame with steering actuator, and superstructure with drive, cutter, and loading conveyor |
| CN201401173Y (en) * | 2009-03-13 | 2010-02-10 | 凯盛重工有限公司 | First lifting transporter of cantilever development machine |
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