CN118978031A - A coal mining and transportation device for shafts and tunnels based on crawler excavators and loaders - Google Patents
A coal mining and transportation device for shafts and tunnels based on crawler excavators and loaders Download PDFInfo
- Publication number
- CN118978031A CN118978031A CN202411465232.4A CN202411465232A CN118978031A CN 118978031 A CN118978031 A CN 118978031A CN 202411465232 A CN202411465232 A CN 202411465232A CN 118978031 A CN118978031 A CN 118978031A
- Authority
- CN
- China
- Prior art keywords
- assembly
- alarm
- wheel
- coal mining
- belt conveyor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 46
- 238000005065 mining Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000005096 rolling process Methods 0.000 claims abstract description 20
- 239000000725 suspension Substances 0.000 claims description 19
- 210000000621 bronchi Anatomy 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 12
- 230000000149 penetrating effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000013459 approach Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/02—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads
- B65G65/04—Loading or unloading machines comprising essentially a conveyor for moving the loads associated with a device for picking-up the loads with pick-up shovels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
- B65G15/24—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units in tandem
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/02—Conveying equipment mounted on a dredger
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F7/00—Equipment for conveying or separating excavated material
- E02F7/02—Conveying equipment mounted on a dredger
- E02F7/026—Conveying equipment mounted on a dredger mounted on machines equipped with dipper- or bucket-arms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/02—Transport of mined mineral in galleries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/045—Sand, soil and mineral ore
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Handcart (AREA)
Abstract
The invention relates to a roadway coal mining and transporting device based on a crawler type excavating loader, which comprises a first belt conveyor arranged on the crawler type excavating loader, wherein a second belt conveyor is arranged right below the discharging end of the first belt conveyor, a third belt conveyor is fixedly connected under the second belt conveyor in a rolling lap joint manner through a wheel moving assembly fixedly arranged at the bottom of the discharging end of the second belt conveyor, a limit alarm mechanism is arranged on the third belt conveyor, the limit alarm mechanism comprises a door-shaped frame vertically arranged at the feeding end of the third belt conveyor in a straddling manner, an alarm assembly is arranged on the front end face of the door-shaped frame, a limit assembly is arranged on the rear end face of the door-shaped frame, and the limit assembly comprises a buffer air bag for limiting the wheel moving assembly to move forwards; the wheel moving assembly is provided with a brake assembly for limiting the rolling movement of the wheel moving assembly, and the brake assembly is connected with the buffer air bag through a spring air pipe matched with the brake assembly. According to the invention, the safety of the coal mining transportation process is enhanced by introducing the limit alarm mechanism, so that the continuity and the high efficiency of the coal mining transportation operation are ensured.
Description
Technical Field
The invention belongs to the technical field of mine coal mining transportation, and particularly relates to a mine coal mining transportation device based on a crawler-type backhoe loader.
Background
The crawler type backhoe loader is a key device in underground coal mining operation, and is mainly responsible for backhoe, loading coal, gangue and other materials and conveying the materials to subsequent conveying equipment. In order to realize efficient and continuous operation of underground coal mining transportation, a coal mining transportation scheme is generally adopted, wherein a crawler type backhoe loader is matched with a two-conveyor belt conveyor and a three-conveyor belt conveyor for use.
The specific working flow of the coal mining transportation scheme is as follows: the crawler type excavating loader performs excavating operation on an underground tunneling working face, coal, gangue and other materials are loaded on a first conveyor belt of the crawler type excavating loader, the first conveyor belt conveys the materials to a second conveyor belt suspended at the tail part of the excavating loader, a third conveyor belt is fixedly connected at the discharge end of the second conveyor belt in a rolling mode through a wheel moving assembly fixedly arranged at the bottom of the second conveyor belt, and the third conveyor belt further conveys the materials conveyed by the second conveyor belt to the ground or other appointed places; the three-conveyor belt machine realizes the rapid pushing and lapping with the two-conveyor belt machine through a stepping type self-moving tail mechanism arranged on the three-conveyor belt machine.
In the prior art, after the three-conveyor belt machine completes a stepping self-moving cycle, the discharge end of the two-conveyor belt machine and the feed end of the three-conveyor belt machine keep a proper distance, at the moment, the crawler-type excavating loader starts the linear coal mining excavation operation, but because the excavating loader continuously moves forward, an operator easily ignores that a wheel moving assembly at the bottom of the discharge end of the two-conveyor belt machine can run out of a track, so that the two-conveyor belt machine has an accident of separating from the three-conveyor belt machine, and the safety transportation of the coal mining operation is affected.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a roadway coal mining and transporting device based on a crawler-type backhoe loader, which has the following specific technical scheme:
the invention provides a roadway coal mining and transporting device based on a crawler type backhoe loader, which comprises a first belt conveyor arranged on the crawler type backhoe loader, wherein a second belt conveyor which is connected with the tail of the crawler type backhoe loader in a hanging way is arranged right below the discharge end of the first belt conveyor, a third belt conveyor is fixedly connected under the second belt conveyor in a rolling way through a wheel moving assembly fixedly arranged at the bottom of the discharge end of the second belt conveyor in a lap joint manner, a limit alarm mechanism is arranged on the third belt conveyor in an overhead manner, the limit alarm mechanism comprises a door-shaped frame vertically arranged at the feed end of the third belt conveyor in a straddling manner, an alarm assembly is arranged on the front end face of the door-shaped frame, a limit assembly is arranged on the rear end face of the door-shaped frame, and the limit assembly comprises a buffer air bag for limiting the front movement of the wheel moving assembly; the wheel movement assembly is provided with a brake assembly for limiting the rolling movement of the wheel movement assembly, and the brake assembly is connected with the buffer air bag through a spring air pipe matched with the brake assembly;
the buffer air bag is divided into a natural state and a pressed state, when the buffer air bag is in the natural state, the alarm assembly does not give out alarm sound, and the brake assembly does not limit the rolling movement of the wheel moving assembly; when the brake assembly is in a pressed state, the limiting assembly triggers the alarm assembly to give out alarm sound, and part of high-pressure gas in the buffer air bag enters the brake assembly through the spring air pipe so as to force the brake assembly to expand inwards in the radial direction to friction and brake the wheel moving assembly.
As a preferable technical scheme of the invention, the door-shaped frame comprises a vertically arranged mounting plate, and the mounting plate is fixedly spanned on the feeding end of the three-conveyor belt conveyor through a second supporting leg integrally and vertically symmetrically connected with the end part of the bottom surface of the mounting plate; the mounting panel rear end face is provided with spacing subassembly, and its preceding terminal surface is provided with alarm component.
As a preferable technical scheme of the invention, the limiting assembly further comprises a baffle plate fixedly arranged on the rear end face of the buffer air bag, a base plate is integrally and fixedly attached to the front end face of the buffer air bag, and the base plate is in clamping fit with a groove arranged in the middle of the rear end face of the mounting plate and is fixedly connected with the base plate through bolts at four corners of the base plate; guide rods are vertically and symmetrically connected to the end parts of the baffle plates respectively, and the free ends of the guide rods correspondingly penetrate through guide holes penetrating through the end parts of the mounting plates; after the wheel moving assembly touches the baffle, the buffer air bags are compressed inwards, and the two guide rods are driven to trigger the alarm assembly to give out alarm sounds.
As a preferable technical scheme of the invention, the alarm assembly comprises a vertically arranged flat supporting plate, and an alarm lamp is suspended on the top surface of the flat supporting plate; the middle part of the rear end face of the flat supporting plate is fixedly provided with a return type frame, and the return type frame is fixedly connected with the rear end face of the mounting plate through a bolt matched with the return type frame; the end parts of the rear end surfaces of the flat supporting plates are respectively and vertically symmetrically embedded with guide sockets, the end parts of the front end surfaces of the flat supporting plates are respectively and vertically symmetrically embedded with battery bins fixedly connected with the corresponding guide sockets, and rechargeable batteries are detachably clamped and assembled in the battery bins;
The positive electrode of the rechargeable battery in the battery bin is in conductive connection with the corresponding guide socket, the negative electrode of the rechargeable battery in the battery bin is in conductive connection with the positive electrode of the alarm lamp through a second conductive wire matched with the positive electrode of the rechargeable battery in the battery bin, the negative electrode of the rechargeable battery in the battery bin is in conductive connection with the corresponding guide socket, and the positive electrode of the rechargeable battery in the battery bin is in conductive connection with the negative electrode of the alarm lamp through a second conductive wire matched with the negative electrode of the alarm lamp;
The free ends of the two guide rods are respectively and vertically provided with a guide plug in an axial direction, and the two guide plugs are connected in a conductive manner through a guide wire matched with the guide plugs; after the wheel moving assembly touches the baffle, the buffer air bags are compressed inwards and drive the guide plugs on the two guide rods to be inserted into the corresponding guide sockets so as to form a closed circuit to be connected with the alarm lamp to give out alarm.
As a preferable technical scheme of the invention, the wheel moving assembly comprises a supporting plate horizontally fixedly connected with the bottom of the discharging end of the belt conveyor, the bottom end parts of the supporting plate are respectively and vertically symmetrically connected with a first supporting leg, the bottom of the first supporting leg is transversely provided with a wheel frame, the end parts of the wheel frame are respectively and rotatably connected with a T-shaped rail wheel, and the T-shaped rail wheel is transversely and rollingly connected with steel rails correspondingly arranged on two sides of the belt surface of the belt conveyor; each wheel frame is provided with a brake assembly for limiting the corresponding T-shaped rail wheel from rolling; the middle part of the front end face of the supporting plate is fixedly connected with a Z-shaped plate for pressing the baffle.
As a preferable technical scheme of the invention, the brake assembly comprises a suspension plate fixedly screwed with the top surface of the corresponding wheel frame, and the suspension plate is connected with the corresponding supporting leg I in a penetrating way through a trepanning which is formed in the middle of the suspension plate in a penetrating way; the bottom surface of the end part of the suspension board is fixedly and symmetrically connected with suspension supporting blocks respectively, the bottom surface of each suspension supporting block is integrally connected with an arc supporting groove which is arranged opposite to the corresponding T-shaped rail wheel in the radial direction, a telescopic air bag is sleeved and matched in the arc supporting groove, and a friction pad is detachably and fixedly attached and matched with the inner cambered surface of the telescopic air bag; the two telescopic air bags are connected with the pipe orifice of the corresponding spring air pipe;
the telescopic air bag is divided into a contracted state and an expanded state, when the telescopic air bag is in the contracted state, the telescopic part of the telescopic air bag is contracted and attached to the edge of the arc supporting groove, and the friction pad is not contacted with the T-shaped rail wheel correspondingly; when in an expansion state, the expansion part of the expansion air bag expands radially inwards, so that the friction pad and the peripheral surface of the T-shaped rail wheel are in close contact with friction braking.
As a preferable technical scheme of the invention, a square plate is fixedly connected with the free end part of the guide rod in the axial direction, round holes are symmetrically formed in four corners of the square plate in a penetrating way respectively, and each round hole is in penetrating fit with an elastic component vertically arranged on the rear end surface of the flat supporting plate;
The elastic component comprises a guide post vertically connected to the rear end face of the flat supporting plate, the gap at the outer end part of the guide post penetrates through the corresponding round hole, and a stop block is fixedly screwed on the end face of the guide post in the axial direction; and a return spring is axially sleeved on the guide post, the front end of the return spring is connected with the flat supporting plate, and the rear end of the return spring is connected with the square plate correspondingly.
As a preferable technical scheme of the invention, the outer part of the battery compartment is transversely sleeved and matched with a pi-shaped fixing frame, and the bottoms of the two sides of the fixing frame are fixedly connected with the front end face of the flat supporting plate through bolts matched with the fixing frame.
As a preferable technical scheme of the invention, the spring air pipe is transversely suspended on the side surface of the corresponding three-conveyor belt conveyor, the first pipe orifice of the spring air pipe is connected with the first hard air pipe with an inverted L-shaped structure, and the other pipe orifice of the spring air pipe is connected with the second hard air pipe with an inverted L-shaped structure; the mouth of pipe of hard gas pipe one with set up in corresponding the air cock of buffering gasbag side, the mouth of pipe of hard gas pipe two is connected with hard bronchus, two mouths of hard bronchus are connected with the flexible gasbag that corresponds respectively.
As a preferable technical scheme of the invention, U-shaped grooves are respectively and transversely symmetrically suspended on the side surfaces of the front material conveying section of the three-conveyor belt conveyor, and the spring air pipes are arranged in the corresponding U-shaped grooves.
The beneficial effects of the invention are as follows:
According to the mine roadway coal mining transportation device, the limiting and alarming mechanism, particularly the buffer air bag and the alarming assembly arranged on the limiting and alarming mechanism, are arranged on the three-conveyor belt conveyor, so that the blocking, limiting, monitoring and alarming of the forward moving position of the wheel moving assembly at the discharge end of the two-conveyor belt conveyor are realized;
When the wheel moving assembly gradually approaches or exceeds the safety distance due to forward movement of the crawler type backhoe loader, the buffer air bag is extruded to enter a pressed state so as to limit the wheel moving assembly to continuously move forward, and immediately trigger the alarm assembly to give out alarm sounds, remind operators to pay attention to timely and take corresponding measures, and effectively prevent the risk that the two-conveyor belt conveyor is separated from the three-conveyor belt conveyor;
Meanwhile, the high-pressure gas released after the buffer air bag is pressed is transmitted to the brake assembly through the spring air pipe, and after the brake assembly receives the gas, the brake assembly can expand inwards radially, closely cling to and rub the rolling part of the brake wheel moving assembly, so that an automatic braking function is realized; the automatic braking mechanism responds rapidly when alarming, further prevents the wheel moving assembly from moving forwards, ensures safe lap joint between equipment, and avoids underground coal mining safety transportation accidents;
By introducing the limit alarm mechanism, the device not only enhances the safety of the coal mining transportation process, but also reduces the downtime and maintenance cost caused by human negligence or improper operation; the operator can timely stop the crawler type excavating and loading machine from moving forward according to the alarm prompt, and after the three-conveyor belt machine completes a stepping type self-moving cycle, the operator continues to move forward for excavating, so that the continuity and the high efficiency of coal mining and transportation operation are ensured.
Drawings
FIG. 1 shows a schematic overall structure of the present invention;
FIG. 2 shows a partial schematic of the present invention;
FIG. 3 shows a schematic structural diagram of a limit alarm mechanism in the invention;
FIG. 4 is a schematic view showing the structure of a portal frame in the present invention;
FIG. 5 shows a schematic structural view of a spacing assembly of the present invention;
FIG. 6 is a schematic diagram of the structure of the alarm assembly of the present invention;
FIG. 7 shows an enlarged view of the structure of the portion A in FIG. 6;
FIG. 8 is a schematic diagram of another view of the alarm assembly of the present invention;
FIG. 9 shows an enlarged view of the structure of the tail of FIG. 8B;
FIG. 10 is a schematic diagram showing the assembly of an alarm assembly and a limit assembly in accordance with the present invention;
FIG. 11 shows a schematic structural view of the brake assembly of the present invention;
FIG. 12 is a schematic diagram showing the assembly of the brake assembly and the wheel shift assembly in accordance with the present invention;
fig. 13 shows a partial structural schematic diagram of another view of the present invention.
The figure shows: 1. a track type backhoe loader; 11. a belt conveyor; 2. a second belt conveyor; 3. a wheel-shifting assembly; 31. a supporting plate; 32. a first supporting leg; 33. a wheel carrier; 34. t-shaped rail wheels; 4. a three-conveyor belt conveyor; 41. a steel rail; 5. a limit alarm mechanism; 51. a door-shaped frame; 511. a mounting plate; 5111. a groove; 5112. a guide hole; 512. a second supporting leg; 52. a limit component; 521. a buffer air bag; 5211. a backing plate; 5212. an air tap; 522. a baffle; 523. a guide rod; 5231. a square plate; 5232. a round hole; 524. a plug; 5241. a first conducting wire; 53. an alarm assembly; 531. a flat supporting plate; 532. a return-type frame; 533. a battery compartment; 5331. a guide socket; 5332. a rechargeable battery; 5333. a fixing frame; 534. a second conducting wire; 535. an alarm lamp; 536. an elastic component; 5361. a guide post; 5362. a return spring; 5363. a stop block; 54. a Z-shaped plate; 55. a brake assembly; 551. a suspension plate; 5511. trepanning; 552. a suspension support block; 553. arc supporting grooves; 554. a telescopic air bag; 555. a friction pad; 556. hard bronchi; 56. a spring air tube; 561. a first hard trachea; 562. a hard trachea II; 57. u-shaped groove.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
In order to solve the technical problems in the background technology, a roadway coal mining and transporting device based on a crawler-type backhoe loader is provided as follows:
Referring to fig. 1-3, a roadway coal mining and transporting device based on a crawler type backhoe loader comprises a first belt conveyor 11 arranged on the crawler type backhoe loader 1, a second belt conveyor 2 which is hung on the tail of the crawler type backhoe loader 1 is arranged right below the discharging end of the first belt conveyor 11, a third belt conveyor 4 is fixedly connected under the second belt conveyor 2 in a rolling mode through a wheel moving assembly 3 fixedly arranged at the bottom of the discharging end of the second belt conveyor, a limit alarm mechanism 5 is arranged on the third belt conveyor 4, the limit alarm mechanism 5 comprises a door-shaped frame 51 vertically arranged at the feeding end of the third belt conveyor 4 in a straddling mode, an alarm assembly 53 is arranged on the front end face of the door-shaped frame 51, a limit assembly 52 is arranged on the rear end face of the door-shaped frame, and the limit assembly 52 comprises a buffer airbag 521 for limiting the front movement of the wheel moving assembly 3; the wheel movement assembly 3 is provided with a brake assembly 55 for limiting the rolling movement of the wheel movement assembly, and the brake assembly 55 is connected with a buffer air bag 521 through a spring air pipe 56 matched with the brake assembly 55;
The buffer air bag 521 is divided into a natural state and a pressed state, when the buffer air bag 521 is in the natural state, the alarm component 53 does not give out an alarm sound, and the brake component 55 does not limit the rolling movement of the wheel movement component 3; when the brake assembly is in a pressed state, the limiting assembly 52 triggers the alarm assembly 53 to sound an alarm, and part of high-pressure gas in the buffer air bag 521 enters the brake assembly 55 through the spring air pipe 56 so as to force the brake assembly 55 to expand radially inwards to friction brake the wheel moving assembly 3.
By adopting the technical scheme, in the mine coal mining and transporting device, the blocking limit and the monitoring alarm of the forward moving position of the wheel moving assembly 3 at the discharge end of the two-conveyor belt 2 are realized through the limit alarm mechanism 5 erected on the three-conveyor belt 4, in particular the buffer air bag 521 and the alarm assembly 53 arranged on the limit alarm mechanism;
When the wheel moving assembly 3 gradually approaches or exceeds the safety distance due to the forward movement of the crawler type backhoe loader 1, the buffer air bag 521 is extruded into a pressed state to limit the wheel moving assembly 3 to continue to move forward, and immediately trigger the alarm assembly 53 to give out alarm sounds, remind operators to pay attention to and take corresponding measures in time, so that the risk that the two-conveyor belt 2 is separated from the three-conveyor belt 4 is effectively prevented;
meanwhile, the high-pressure gas released after the buffer air bag 521 is pressed is transmitted to the brake assembly 55 through the spring air pipe 56, and after the brake assembly 55 receives the gas, the gas can expand radially inwards, and the rolling part of the brake wheel moving assembly 3 is tightly adhered and rubbed, so that an automatic braking function is realized; the automatic braking mechanism responds rapidly when alarming, further prevents the wheel moving assembly 3 from continuing to move forward, ensures safe lap joint between equipment, and avoids underground coal mining safety transportation accidents;
By introducing the limit alarm mechanism 5, the device not only enhances the safety of the coal mining transportation process, but also reduces the downtime and maintenance cost caused by human negligence or improper operation; the operator can timely stop the forward movement of the crawler type excavating loader 1 according to the alarm prompt, and after the three-conveyor belt 4 finishes a stepping type self-moving cycle, the operator continues to forward move for excavating, so that the continuity and the high efficiency of coal mining and transportation operation are ensured.
Example two
On the basis of the above embodiment, as shown in fig. 3 to 10, the following is further given in this embodiment:
In this embodiment, as shown in fig. 3 and fig. 4, the gate-type frame 51 includes a vertically installed mounting plate 511, and the mounting plate 511 is fixedly straddled on the feeding end of the belt conveyor 4 through a second leg 512 integrally connected with the bottom end of the mounting plate in a vertically symmetrical manner; the rear end face of the mounting plate 511 is provided with a limiting component 52, and the front end face of the mounting plate is provided with an alarm component 53.
Through adopting above-mentioned technical scheme, the landing leg two 512 that door frame 51 through its bottom surface tip integration vertical symmetry connects is firmly striden and is located on the feed end of three fortune belt conveyors 4, and this kind of design has not only ensured the stability of door frame 51, makes it can bear the impact force from the weight and the wheel of spacing subassembly 52 and alarm subassembly 53 move subassembly 3, still is convenient for install and adjustment position.
As shown in fig. 3 and 5, the limiting assembly 52 further includes a baffle 522 fixedly disposed on the rear end surface of the buffer air bag 521, a pad 5211 is integrally and fixedly attached to the front end surface of the buffer air bag 521, and the pad 5211 is in snap fit with a groove 5111 formed in the middle of the rear end surface of the mounting plate 511 and is fixedly connected with the groove 5111 by bolts at four corners thereof; the end parts of the baffle 522 are respectively and symmetrically connected with a guide rod 523, and the free ends of the guide rods 523 correspondingly pass through guide holes 5112 penetrating through the end parts of the mounting plates 511; after the wheel moving assembly 3 touches the baffle 522, the buffer air bag 521 is compressed and compressed inwards, and drives the two guide rods 523 to trigger the alarm assembly 53 to sound an alarm.
By adopting the technical scheme, the limiting component 52 realizes effective limiting of the forward movement of the wheel moving component 3 through the arrangement of the buffer air bag 521; when the wheel assembly 3 approaches or exceeds the safe distance due to the forward movement of the track loader 1, it will press against the barrier 522, causing the cushion bladder 521 to collapse inwardly; in this process, not only is further forward movement of the wheel-moving assembly 3 restricted, but also an alarm mechanism is triggered by deformation of the buffer air bag 521; the alarm component 53 is triggered when the buffer air bag 521 is pressed, and sounds an alarm to remind an operator to pay attention and take measures; the instant feedback mechanism greatly improves the safety of operation and avoids coal mining safety transportation accidents caused by negligence of operators;
The matching design of the guide rod 523 and the guide hole 5112 provides a stable guide function for the compression deformation of the buffer air bag 521; this design ensures that the cushion airbag 521 can retract in a predetermined direction when being compressed, thereby accurately triggering the alarm assembly 53 and avoiding false alarm or missing alarm conditions caused by uncertain deformation directions;
the pad 5211 is in clamping fit with the groove 5111 in the middle of the rear end surface of the mounting plate 511 and is fixedly connected through bolts, so that the mounting stability of the buffer air bag 521 is enhanced; this stability not only ensures the reliability of the spacing assembly 52 during operation, but also extends its useful life.
As shown in fig. 3,6, 8 and 10, the alarm assembly 53 includes an upright flat supporting plate 531, and an alarm lamp 535 is suspended on the top surface of Ping Chengban 531; the middle part of the rear end surface of the flat supporting plate 531 is fixedly provided with a return frame 532, and the return frame 532 is fixedly connected with the rear end surface of the mounting plate 511 through bolts matched with the return frame 532; the rear end face ends of the flat supporting plates 531 are respectively and symmetrically embedded with guide sockets 5331 in a vertical mode, the front end face ends of the flat supporting plates 531 are respectively and symmetrically embedded with battery bins 533 fixedly connected with the corresponding guide sockets 5331 in a vertical mode, and rechargeable batteries 5332 are detachably clamped and assembled in the battery bins 533;
The positive electrode of the rechargeable battery 5332 in one battery compartment 533 is electrically connected with the corresponding conducting socket 5331, the negative electrode of the rechargeable battery 5332 in the battery compartment 533 is electrically connected with the positive electrode of the alarm lamp 535 through a second conducting wire 534 matched with the positive electrode of the rechargeable battery 5332, the negative electrode of the rechargeable battery 5332 in the other battery compartment 533 is electrically connected with the corresponding conducting socket 5331, and the positive electrode of the rechargeable battery 5332 is electrically connected with the negative electrode of the alarm lamp 535 through a second conducting wire 534 matched with the negative electrode of the alarm lamp;
the free ends of the two guide rods 523 are respectively and vertically provided with guide plugs 524 in an axial direction, and the two guide plugs 524 are connected in a conductive manner through a first lead 5241 matched with the guide plugs; after the wheel moving assembly 3 touches the baffle 522, the buffer air bag 521 is compressed and compressed, and drives the guide plugs 524 on the two guide rods 523 to be inserted into the corresponding guide sockets 5331, so as to form a closed circuit to connect the alarm lamp 535 to generate an alarm.
By adopting the technical scheme, when the wheel moving assembly 3 approaches or exceeds a safe distance due to the forward movement of the crawler type backhoe loader, the wheel moving assembly can touch the baffle 522 in the limiting assembly 52, so that the buffer air bag 521 is compressed and contracted inwards; in this process, the two guide rods 523 move with them, so that the guide plug 524 on the free end thereof is plugged into the guide socket 5331 in the alarm assembly 53, thereby forming a closed circuit; this instant circuit closing action triggers the alarm light 535 to sound an alarm, providing a rapid and clear alert signal to the operator;
The alarm component 53 adopts a dual power supply design, namely, the two battery bins 533 are respectively provided with the rechargeable batteries 5332, and the design ensures that even if one of the rechargeable batteries 5332 runs out of charge or fails, the other rechargeable battery 5332 can still continue to supply power, so that the reliability of an alarm function is ensured;
The components of the alarm component 53, such as the flat supporting plate 531, the return frame 532, the guide socket 5331, the battery compartment 533 and the like, are all in modularized design, so that the installation, the disassembly and the maintenance are convenient; in particular, the removable design of the rechargeable battery 5332 within the battery compartment 533 allows the operator to easily replace the rechargeable battery 5332 without having to disassemble the entire alarm assembly 53.
Preferably, the first wire 5241 can pass through the loop-shaped frame 532, and can be placed above or below the loop-shaped frame 532, so long as the plugging of the plug 524 with the socket 5331 is not affected.
As shown in fig. 6 and 7, a square plate 5231 is fixedly connected to the free end of the guide rod 523 in the axial direction, and round holes 5232 are symmetrically formed at four corners of the square plate 5231 in a penetrating manner, and each round hole 5232 is in penetrating engagement with an elastic component 536 vertically arranged on the rear end surface of the flat supporting plate 531;
the elastic component 536 comprises a guide post 5361 vertically connected to the rear end surface of the flat supporting plate 531, the outer end gap of the guide post 5361 passes through the corresponding round hole 5232, and the end surface of the guide post 5361 is fixedly screwed with a stop block 5363 in the axial direction; a return spring 5362 is axially sleeved on the guide post 5361, and the front end of the return spring 5362 is connected with the flat supporting plate 531, and the rear end of the return spring 5362 is connected with the square plate 5231.
By adopting the above technical scheme, the square plate 5231 is fixedly connected to the free end of the guide rod 523, and round holes 5232 symmetrically penetrating through the four corners of the square plate are in penetrating fit with guide posts 5361 in the elastic component 536; this design not only further provides a stable guiding action for the guide rod 523, but also achieves a buffering effect by the combination of the guide post 5361 and the return spring 5362; when the wheel moving assembly 3 touches the baffle 522, the buffer air bag 521 is compressed and drives the guide rod 523 to move, the return spring 5362 can absorb part of impact energy, so that the moving speed of the guide rod 523 is slowed down, and the damage of the guide socket 5331 caused by sudden impact of the guide plug 524 is avoided.
As shown in fig. 8 and 9, the outer part of the battery compartment 533 is transversely sleeved with a pi-shaped fixing frame 5333, and the bottoms of the two sides of the fixing frame 5333 are fixedly connected with the front end surface of the flat supporting plate 531 through bolts matched with the fixing frame 5333.
Through adopting above-mentioned technical scheme, the pi font mount 5333 that sets up provides extra horizontal support for battery compartment 533 through the bolted connection of its both sides bottom and flat strut 531 front end face, and this kind of design can prevent that guide plug 524 from leading to socket 5331 and battery compartment 533 to drop because of suddenly striking.
Example III
With reference to fig. 3 and fig. 11 to fig. 13, on the basis of the above embodiment, the following is further provided in this embodiment:
In this embodiment, as shown in fig. 12 and 13, the wheel moving assembly 3 includes a supporting plate 31 horizontally fixedly connected to the bottom of the discharge end of the belt conveyor 2, the bottom end of the supporting plate 31 is vertically and symmetrically connected with a first supporting leg 32, a wheel frame 33 is transversely mounted at the bottom of the first supporting leg 32, the end of the wheel frame 33 is respectively rotatably connected with a T-shaped rail wheel 34, and the T-shaped rail wheel 34 is transversely and rollingly connected with steel rails 41 correspondingly arranged at two sides of the belt surface of the belt conveyor 4; each wheel frame 33 is provided with a brake assembly 55 for limiting the rolling movement of the corresponding T-shaped rail wheel 34; the middle part of the front end surface of the supporting plate 31 is fixedly and spirally connected with a Z-shaped plate 54 for pressing the baffle 522.
By adopting the technical scheme, the transverse rolling connection is realized between the wheel moving assembly 3 and the steel rails 41 on two sides of the belt surface of the three-way belt conveyor 4 through the T-shaped track wheel 34, and the design ensures that the two-way belt conveyor 2 can stably move and overlap on the three-way belt conveyor 4, so that the continuity and stability of material transmission are ensured; meanwhile, the contact area and stability between the wheel moving assembly 3 and the steel rail 41 are enhanced by the design of the T-shaped track wheel 34, and vibration and deflection in the rolling process are reduced;
Each wheel frame 33 is provided with a brake assembly 55, and the brake assemblies 55 are respectively connected with a buffer air bag 521 through a spring air pipe 56; when the second belt conveyor 2 approaches the safe position of the feeding end of the third belt conveyor 4 due to the forward movement of the crawler-type backhoe loader 1, the Z-shaped plate 54 of the wheel moving assembly 3 can touch the baffle 522, so that the buffer air bag 521 is pressed and releases high-pressure air into the brake assembly 55; the brake assembly 55 thus expands radially inwardly, frictionally braking the T-rail wheel 34, thereby preventing further rolling of the wheel-shift assembly 3; the safety braking mechanism effectively prevents the accident that the two-conveyor belt 2 is separated from the three-conveyor belt 4, and improves the safety and reliability of coal mining operation.
As shown in fig. 11 and 12, the brake assembly 55 includes a suspension plate 551 fixedly screwed to the top surface of the wheel frame 33, and the suspension plate 551 is connected to the first leg 32 through a socket 5511 formed in the middle of the suspension plate 551; the bottom surfaces of the end parts of the suspension plates 551 are respectively and fixedly and symmetrically connected with suspension supporting blocks 552 in a threaded manner, the bottom surfaces of the suspension supporting blocks 552 are integrally connected with arc supporting grooves 553 which are arranged opposite to the corresponding T-shaped track wheels 34 in radial direction, telescopic air bags 554 are sleeved and matched in the arc supporting grooves 553, and friction pads 555 are detachably and fixedly matched with the intrados of the telescopic air bags 554; both the telescopic air bags 554 are connected with the pipe orifices corresponding to the spring air pipes 56;
The telescopic air-bag 554 is divided into a contracted state and an expanded state, and when the telescopic air-bag 554 is in the contracted state, the telescopic part of the telescopic air-bag 554 is contracted to the edge of the arc supporting groove 553, and the corresponding friction pad 555 is not contacted with the T-shaped rail wheel 34; when in the expanded state, the expansion part of the expansion air bag 554 expands radially inwards, so that the corresponding friction pad 555 and the outer peripheral surface of the T-shaped rail wheel 34 cling to friction braking.
By adopting the technical scheme, when the two-conveyor belt 2 approaches the safe position of the feeding end of the three-conveyor belt 4 due to the forward movement of the crawler-type backhoe loader 1, the Z-shaped plate 54 on the wheel moving assembly 3 can touch the baffle 522 in the limit alarming mechanism 5, so that the buffer air bag 521 is pressed and releases high-pressure air; these high pressure gases rapidly enter the telescoping bladder 554 in the brake assembly 55 through the spring air tube 56, causing the telescoping bladder 554 to transition from a contracted state to an expanded state; the expanding telescopic air bag 554 pushes the friction pad 555 to be closely attached to the outer peripheral surface of the T-shaped rail wheel 34, so that quick and effective friction braking is realized, and further rolling of the wheel moving assembly 3 is prevented; the instant response and high-efficiency braking mechanism effectively prevents the risk that the two-way belt conveyor 2 is separated from the three-way belt conveyor 4;
The brake assembly 55 is in normal condition (i.e. when the telescopic air bag 554 is in a contracted state), the friction pad 555 is not contacted with the T-shaped rail wheel 34, so that unnecessary abrasion and energy consumption are reduced; only when braking is needed, the friction pad 555 is tightly attached to the T-shaped rail wheel 34 under the action of high-pressure gas, so that the reliability and safety of braking are ensured; in addition, the detachable design of the friction pad 555 is convenient to replace and maintain, and the service life and the safety of the device are further improved.
As shown in fig. 3 and 13, the spring air pipe 56 is transversely suspended on the side surface of the belt conveyor 4, a first pipe orifice of the spring air pipe 56 is connected with a first hard air pipe 561 with an inverted L-shaped structure, and the other pipe orifice of the spring air pipe is connected with a second hard air pipe 562 with an inverted L-shaped structure; the orifice of the first hard air tube 561 is connected with an air nozzle 5212 arranged on the side surface of the corresponding buffer air bag 521, the orifice of the second hard air tube 562 is connected with a hard bronchus 556, and two orifices of the hard bronchus 556 are respectively connected with a corresponding telescopic air bag 554.
By adopting the technical scheme, the first hard air pipe 561 and the second hard air pipe 562 adopt inverted L-shaped structures, and are respectively connected with the spring air pipe 56, the air nozzle 5212 of the buffer air bag 521 and the telescopic air bag 554 of the brake assembly 55, and the hard connection structure can ensure that the spring air pipe 56 can keep transversely telescopic movement along with the movement of the three-conveyor belt 4 or the wheel-moving assembly;
The hard bronchus 556 serves as an intermediate connecting piece, high-pressure gas of the hard bronchus two 562 is accurately distributed into the two telescopic air bags 554, and the two brake assemblies can be ensured to expand simultaneously and uniformly, so that uniform friction braking of the T-shaped rail wheel 34 is realized.
As shown in fig. 3 and 13, the side surfaces of the front conveying section of the three-conveyor belt 4 are respectively and symmetrically suspended with a U-shaped groove 57, and the spring air pipe 56 is placed in the corresponding U-shaped groove 57.
By adopting the technical scheme, the U-shaped groove 57 provides a fixed placing space for the spring air pipe 56, and the spring air pipe 56 is prevented from being damaged by direct impact, friction or extrusion in a complex underground environment; since the spring air tubes 56 are stably placed in the U-shaped grooves 57, their connection with the first hard air tube 561, the second hard air tube 562 and the hard bronchi 556 is more stable, not only is the problem of air leakage caused by loose or falling connection reduced, but also the spring air tubes 56 can be better moved in a telescopic manner laterally along the U-shaped grooves 57.
The working principle and the using flow of the invention are as follows:
When the coal mining machine is used, in the coal mining operation of a roadway, the crawler type backhoe loader 1 backhoes and loads coal to the self first-speed belt conveyor 11, the coal is then conveyed to the second-speed belt conveyor 2, and the second-speed belt conveyor 2 is conveyed to the third-speed belt conveyor 4, so that continuous conveying of the coal is realized;
In order to ensure the transportation safety, a limit alarm mechanism 5 is arranged on the three-conveyor belt conveyor 4; when the crawler type backhoe loader 1 moves forward continuously, if an operator does not find and adjust in time, the wheel moving assembly 3 at the bottom of the discharging end of the two-conveyor belt 2 can be separated from the steel rail 41 on the three-conveyor belt 4 due to excessive forward movement, so that accidents are caused; at this time, the Z-shaped plate at the front end of the wheel moving assembly 3 will touch and press the baffle 522 in the limit alarming mechanism 5, so that the buffer air bag 521 is compressed and compressed inwards (the buffer air bag 51 itself will also block the wheel moving assembly 3 from continuing the front edge);
The pressurized state of the cushion bladder 521 triggers two simultaneous actions: firstly, the guide rod 523 drives the guide plug 524 to be inserted into the guide socket 5331 in the alarm component 53 to form a closed circuit, so that the alarm lamp 535 emits an alarm sound to remind an operator; part of high-pressure gas in the buffer air bag 521 enters a telescopic air bag 554 in the brake assembly 55 through a spring air pipe 56, so that the telescopic air bag 554 is expanded, a friction pad 555 of an inner cambered surface of the telescopic air bag clings to the peripheral surface of the T-shaped rail wheel 34, and a friction force is generated to brake the wheel moving assembly 3, so that the wheel moving assembly is prevented from continuously moving forwards;
meanwhile, the guide rod 523 compresses the return spring 5362 in the elastic component 536 during the movement, so that the movement speed of the guide rod 523 is slowed down, and the damage of the guide socket 5331 caused by the sudden impact of the guide plug 524 is avoided.
In the whole process, the limit alarming mechanism 5 not only plays a role in early warning, but also realizes automatic braking of the wheel moving assembly 3 through the buffer air bag 521 and the brake assembly 55, thereby greatly improving the safety and reliability of coal mining transportation; the operator can ensure the smooth coal mining and transportation operation by taking measures in time according to the prompt of the alarm lamp 535.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411465232.4A CN118978031B (en) | 2024-10-21 | 2024-10-21 | Roadway coal mining and transporting device based on crawler-type backhoe loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411465232.4A CN118978031B (en) | 2024-10-21 | 2024-10-21 | Roadway coal mining and transporting device based on crawler-type backhoe loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118978031A true CN118978031A (en) | 2024-11-19 |
| CN118978031B CN118978031B (en) | 2025-01-14 |
Family
ID=93447778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411465232.4A Active CN118978031B (en) | 2024-10-21 | 2024-10-21 | Roadway coal mining and transporting device based on crawler-type backhoe loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118978031B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213094A (en) * | 2010-04-12 | 2011-10-12 | 淮南矿业(集团)有限责任公司 | Construction system and construction method for mine rock drivage |
| CN209306353U (en) * | 2018-11-19 | 2019-08-27 | 鞍钢集团矿业有限公司 | An anti-collision device for a shuttle belt conveyor |
| WO2022040923A1 (en) * | 2020-08-25 | 2022-03-03 | 苗林展 | Material boxing device and material feeding apparatus |
| CN115092199A (en) * | 2022-08-24 | 2022-09-23 | 成都工业职业技术学院 | Rail transport equipment and braking system suitable for high-speed railway |
| CN218197998U (en) * | 2022-09-23 | 2023-01-03 | 苏州焕能新能源科技有限公司 | Battery compartment suitable for batch passing of batteries in battery replacing station |
| CN118270470A (en) * | 2024-04-30 | 2024-07-02 | 华中农业大学 | A self-propelled rail conveyor system |
-
2024
- 2024-10-21 CN CN202411465232.4A patent/CN118978031B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213094A (en) * | 2010-04-12 | 2011-10-12 | 淮南矿业(集团)有限责任公司 | Construction system and construction method for mine rock drivage |
| CN209306353U (en) * | 2018-11-19 | 2019-08-27 | 鞍钢集团矿业有限公司 | An anti-collision device for a shuttle belt conveyor |
| WO2022040923A1 (en) * | 2020-08-25 | 2022-03-03 | 苗林展 | Material boxing device and material feeding apparatus |
| CN115092199A (en) * | 2022-08-24 | 2022-09-23 | 成都工业职业技术学院 | Rail transport equipment and braking system suitable for high-speed railway |
| CN218197998U (en) * | 2022-09-23 | 2023-01-03 | 苏州焕能新能源科技有限公司 | Battery compartment suitable for batch passing of batteries in battery replacing station |
| CN118270470A (en) * | 2024-04-30 | 2024-07-02 | 华中农业大学 | A self-propelled rail conveyor system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118978031B (en) | 2025-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108590660B (en) | Open-pit side coal mining and transporting device and method for rapidly transferring working face | |
| CN215213579U (en) | Bidirectional triggering automatic explosion-proof device under coal mine | |
| CN104213831A (en) | Anchor rod drill carriage integrating coal mine digging, supporting and transportation parallel fast operation | |
| CN102235167A (en) | Excavating loader for coal mine | |
| US20150232280A1 (en) | Roof Mountable Support System | |
| CN112253159A (en) | Transverse shaft digging and anchoring machine | |
| CN118978031B (en) | Roadway coal mining and transporting device based on crawler-type backhoe loader | |
| CN110424891A (en) | A kind of brill dress anchor all-in-one machine of the tunnelling with stretching structure | |
| CN210259996U (en) | Colliery raw materials conveyor | |
| CN204476407U (en) | A kind of pick anchor parallel operations construction equipment | |
| CN110410090A (en) | A multi-arm, multi-drill, drilling and anchoring integrated machine with a telescopic structure | |
| CN112520316B (en) | A vertical lifting machine and a vertical lifting system | |
| CN107165662A (en) | Broken Anchor Care machine | |
| CN217681758U (en) | Continuous conveyor tail device for underground roadway excavation | |
| CN115783638A (en) | An active telescopic belt self-moving transfer machine | |
| CN213292283U (en) | Van-type mine car convenient for loading and unloading goods for mining industry | |
| CN214455248U (en) | Intelligent driving, loading and slag storage bin | |
| CN114320323A (en) | Three-support-shoe tightening shield for double-shield coal roadway heading machine | |
| CN211895570U (en) | Rope storage device of endless rope winch | |
| CN213568572U (en) | Waste rock blocking device and rubber belt conveyor equipment | |
| CN220431405U (en) | Self-moving tail coal leakage hopper matched with two-operation belt conveyor | |
| CN203476378U (en) | Automatic return device of spare explosion-proof manhole cover of mine air shaft | |
| CN218265969U (en) | Temporary support device for heading machine | |
| CN219057482U (en) | Support protection system for belt conveyor without concrete foundation | |
| CN215793734U (en) | Wheel for gallery people vehicle convenient to maintain and install |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |