CN112960526B - Top pushing device and method for automatic mine car entering and exiting cage - Google Patents

Abstract

The invention provides a top pushing device and a top pushing method for a mine car to automatically enter and exit a cage, wherein the device comprises a track unit, a speed reducing motor, a supporting frame, a chain wheel pushing group, a folding rod unit and a folding pushing frame; a slide rail is arranged on the inner side of the rail unit; the supporting frame is arranged above the track unit and is provided with a speed reducing motor, and the folding rod unit is fixed on a chain of the chain wheel pushing group; the folding rod unit comprises a plate clamp, when the mine car enters the cage, the plate clamp is connected with the folding pushing frame, and when the mine car exits the cage, the plate clamp is connected with the mine car; the folding pushing frame comprises a lantern ring bottom plate, and the lantern ring bottom plate comprises a lantern ring sleeved on the sliding rail; the lantern ring bottom plate is hinged with the front frame and the rear frame, and the rear frame comprises a cross beam; the rear side surface of the front frame is hinged with a fixed rod, and the tail end of the fixed rod is provided with a buckle for clamping the cross beam. The invention can be converted into rigid connection, thereby improving the impact load resistance; meanwhile, the mine car can be folded and contracted in the field, the occupied space is small when the mine car is folded, and the transportation interference of subsequent mine cars is reduced.

Description

Top pushing device and method for automatic mine car entering and exiting cage

Technical Field

The invention belongs to the technical field of coal mine transportation, and particularly relates to a top pushing device and method for a mine car to automatically enter and exit a cage.

Background

The cage is the equipment commonly used in mine, but because the direction of the various section bridgeheads in different mines business turn over cage from the cage of shaking table is inconsistent, the mine car promotes to the shaft well head or when transferring the mine car, needs the manual work to promote the mine car operation for artifical intensity of labour is big, the potential safety hazard is higher. Although some mechanical push-pull devices exist, through field investigation, the methods are all easy to suffer strong impact load during the pushing process and cause damage to the devices, and the mine car pushing interference problem exists at the arrangement field.

Therefore, there is a need in the art for a pusher jack having high resistance to impact loads and low interference with transportation.

Disclosure of Invention

The invention aims to provide a top pushing device and a method for automatically entering and exiting a cage by a mine car, wherein a folding pushing frame in the device can be converted into rigid connection so as to improve the impact load; the folding pushing frame and the folding rod unit in the device can be folded and contracted in the field so as to reduce the interference on transportation. In order to realize the purpose, the invention adopts the following technical scheme:

a top pushing device for a mine car to automatically enter and exit a cage comprises:

the track unit is used for allowing a mine car to slide and comprises at least one pair of parallel tracks; a slide rail is arranged on the inner side of the rail unit; the sliding rail is arranged along the length direction of the track;

the support frame is arranged above the track unit, a speed reducing motor is arranged on the support frame, the output end of the speed reducing motor is connected with one end of a chain wheel pushing group, and the other end of the chain wheel pushing group is fixed on the support frame;

the chain wheel pushing group comprises at least one chain which is connected end to end, and the chain is arranged along the length direction of the slide rail; a folding rod unit is fixed on the chain; the folding rod unit is positioned below the chain;

the folding rod unit comprises a plate clamp, the plate clamp is connected with a folding and pushing frame when the mine car enters the cage, and the plate clamp is connected with the mine car when the mine car exits the cage;

folding migration frame is located one side that the cage was kept away from to the mine car includes: the lantern ring bottom plate comprises a lantern ring sleeved on the sliding rail; the lantern ring bottom plate is hinged with a front frame and a rear frame, and a side frame is hinged between the front frame and the rear frame; the rear frame comprises a cross beam; the front frame is arranged close to the mine car; the rear side surface of the front frame is hinged with a fixed rod, and the tail end of the fixed rod is provided with a buckle for clamping the cross beam.

Preferably, the folding rod unit further comprises a rigid connecting rod fixed to the lower section of the chain, the lower end of the rigid connecting rod is hinged to a pushing connecting rod, a steel wire rope is arranged at the lower part of the pushing connecting rod, and the lower end of the steel wire rope is connected with the plate clamp.

Preferably, the rigid connecting rod comprises a horizontal rod and a vertical rod fixed on the horizontal rod, the horizontal rod is of a hollow structure, a sleeve is arranged on the horizontal rod, and the sleeve is sleeved on the roller of the chain.

Preferably, the chain wheel pushing group further comprises a driving gear shaft and a driven gear shaft which are horizontally arranged, and the driving gear shaft is connected with an output shaft of the speed reducing motor; both ends of the driven gear shaft and both ends of the driving gear shaft are rotatably arranged on a chain wheel hinge seat, a driving chain wheel is arranged on the driving gear shaft, and a driven chain wheel is arranged on the driven gear shaft; the driven chain wheel and the driven chain wheel are matched with the chain; the chain wheel hinged seats connected with the driving gear shaft are all fixed on the supporting frame, and the chain wheel hinged seats connected with the driven gear shaft are all fixed on a mine.

Preferably, the support frame comprises a pair of support i-beams which are positioned outside the track and fixed on the foundation, and the pair of support i-beams are arranged oppositely;

a longitudinal I-beam is respectively arranged between each supporting I-beam and the mine,

a fixed additional beam and a bracket beam are arranged between the pair of supporting I-shaped beams; the bracket beam is positioned below the fixed beam;

the fixed beam is provided with a motor support frame and a second chain wheel support frame, and the second chain wheel support frame is fixedly provided with a first chain wheel support frame; the first chain wheel supporting frame is fixedly provided with a chain wheel hinged seat on the driving gear shaft;

and a push rod bracket for bearing the folding rod unit is arranged on the bracket beam.

Preferably, the tensioning unit comprises a tensioning gear shaft which is rotatably mounted on the supporting frame, and a tensioning gear is arranged on the tensioning gear shaft and is meshed with the chain and below the lower section of the chain.

Preferably, a rubber push plate is arranged on the front side surface of the front frame of the folding and pushing frame.

A method for automatically entering and exiting a cage of a mine car is based on a top pushing device of the cage of the mine car, and comprises the following steps:

when the mine car needs to be pushed into the cage, the folding pushing frame in a folding state is lifted to drive the front frame, the side frame and the rear frame to rotate and move upwards, the fixed rod is rotated to buckle the buckle of the fixed rod with the cross beam, and the folding pushing frame forms an unfolding state;

then unfolding and putting down the folding rod unit, and clamping the plate clamp on the rear frame so as to connect the chain with the folding pushing frame;

and finally, driving a speed reducing motor, wherein the speed reducing motor drives the chain wheel pushing group to operate so as to drive the chain to move towards the mine direction, so that the chain drives the folding pushing frame to move towards the mine direction, and the folding pushing frame operates to the mine car and pushes the mine car to enter the cage.

Preferably, after the mine car enters the cage, the method further comprises the following steps: loosening the plate clamp, lifting the fixing rod on the folding pushing frame, driving the front frame, the side frame and the rear frame to rotate and move downwards so as to convert the folding pushing frame in an unfolded state into a folded state, and then flatly placing the folding pushing frame on the inner side of the track; and finally, the folding rod unit is reset.

Preferably, the method further comprises the following steps:

when the mine car leaves the cage, the folding rod unit is unfolded and lowered, then the speed reducing motor is driven, the speed reducing motor drives the chain wheel pushing group to operate so as to drive the chain to move towards the mine direction, and therefore the chain drives the folding rod unit to move towards the mine direction;

and moving the folding rod unit to the mine, clamping the clamping plate on the mine car, and then driving the speed reducing motor, wherein the speed reducing motor drives the chain wheel pushing group to move so as to drive the chain to move towards the direction far away from the mine, so that the mine car leaves the cage.

Compared with the prior art, the invention has the advantages that:

(1) The purpose of mechanically pushing the mine car into the cage is achieved through the chain wheel pushing group, the folding pushing frame, the speed reducing motor and the folding rod unit; meanwhile, the folding pushing frame in the device can be converted into rigid connection, so that the impact load resistance is improved, and the problem that impact load generated in the traditional mine car pushing and pulling process cannot adapt is solved.

(2) The folding pushing frame and the folding rod unit in the device can be folded and contracted in the field, and the occupied space is small when the device is folded, so that the transportation interference of a subsequent mine car is reduced, namely, the operation space of a cage and the mine car is not influenced, and the working safety of coal mine workers is also improved.

(3) The chain wheel pushing group in the device is arranged above the site, so that the digging of the ground can be avoided.

Drawings

FIG. 1 is a perspective view of a top pusher mechanism for automated car entry and exit into and out of a cage in accordance with one embodiment of the present invention;

FIG. 2 is a partial schematic view of FIG. 1;

FIG. 3 is a diagram of the position relationship of the track, the slide rail, the sprocket pushing set and the foldable pushing frame in FIG. 1;

FIG. 4 is a schematic view of the folding bar unit of FIG. 1 in a folded state;

FIG. 5 is a schematic view of the folding bar unit of FIG. 1 in an unfolded state;

FIG. 6 is a block diagram of the sprocket shift group and the tensioning unit of FIG. 1;

FIG. 7 is a block diagram of the folding bar unit of FIG. 1;

FIG. 8 is a block diagram of the rigid link of FIG. 7;

FIG. 9 is a structural view of the plate clip of FIG. 7;

fig. 10 is a schematic view showing a connection relationship between the folding bar unit and the chain in fig. 1;

FIG. 11 is a schematic view of still another connection between the folding bar unit and the chain of FIG. 1;

FIG. 12 is a view showing the positional relationship between the mine car, the guide rail, the slide rail and the folding pusher carriage of FIG. 1;

FIG. 13 is a schematic view of the gap between the mine car of FIG. 12 and the skid rails;

FIG. 14 is another schematic view of FIG. 13;

FIG. 15 is a perspective view of the folding pusher jack in an unfolded state;

FIG. 16 is a schematic view from a further perspective of FIG. 15;

FIG. 17 is another schematic view of FIG. 15;

FIG. 18 is a perspective view of the folding pusher carriage in a folded position;

FIG. 19 is a perspective view of the support frame of FIG. 1;

FIG. 20 is a schematic view of the mounting of the sprocket moving group of FIG. 1 to the frame rail;

fig. 21 is a schematic view of the installation of the sprocket shift group of fig. 1 in a mine.

Wherein, 1-mine, 2-cage, 3-mine car, 4-rail, 5-support frame, 6-sprocket pushing group, 7-slide rail, 8-folding pushing frame, 9-longitudinal I-beam, 10-support I-beam, 11-bracket beam, 12-fixed frame beam, 13-first sprocket support frame, 14-motor support frame, 15-push rod bracket, 16-foundation, 17-reinforcing rib plate, 18-rubber push plate, 19-front frame, 20-handle, 21-side frame, 22-fixed rod, 23-rear frame, 24-lantern ring bottom plate, 25-sprocket hinging seat, 26-sprocket, 27-chain, 28-second sprocket support frame, 29-speed reducing motor, 30-driving gear shaft, 31-tensioning unit, 32-rigid connecting rod, 33-pushing connecting rod, 34-steel wire rope and 35-plate clamp.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying schematic drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

As shown in fig. 1 to 21, a top pushing device for a mine car 3 to automatically enter and exit a cage 2 is based on a mine 1 which is arranged on the ground and communicated with the underground, and the cage 2 is hoisted in the mine 1; the cage 2 and the ground are both provided with rails 4.

This top pusher jack includes: the folding device comprises a track unit, a supporting frame 5, a chain wheel pushing group 6, a speed reducing motor 29, a folding rod unit and a folding pushing frame 8.

A rail unit for sliding the mine car 3, the rail unit including a pair of rails 4 arranged in parallel; the inner side of the track unit is provided with a slide rail 7; the slide rails 7 are provided along the length direction of the rail 4. Wherein, the slide rail 7 is used for fixing the lantern ring bottom plate 24 in the folding and pushing frame 8. The slide rail 7 is disposed close to one of the rails 4, and the distance between the slide rail 7 and the other rail 4 is greater than the width of the folding and pushing frame 8, so that the folding and pushing frame 8 can be folded and horizontally placed on the inner side of the guide rail unit.

And the supporting frame 5 is used for installing the chain wheel pushing groups 6 to build an arrangement area of the chain wheel pushing groups 6, as shown in fig. 19 to 21. The support frame 5 is arranged above the track unit and is arranged right opposite to the opening of the mine 1. The support frame 5 is provided with a speed reducing motor 29, the output end of the speed reducing motor 29 is connected with one end of the chain wheel pushing group 6, and the other end of the chain wheel pushing group 6 is fixed on the support frame 5. Specifically, the support frame 5 includes a foundation 16, a pair of support i-beams 10, a pair of longitudinal i-beams 9, a fixed beam 12, and a bracket beam 11. Wherein the foundation 16 is disposed below the ground; the supporting I-beams 10 are all positioned on the outer side of the track 4 and fixed on the foundation 16, and reinforcing rib plates 17 are arranged on the front side and the rear side of the lower end of each supporting I-beam 10 so as to increase the overall strength of the supporting frame 5; a pair of supporting i-beams 10 are oppositely arranged; a longitudinal I-beam 9 is respectively arranged between each supporting I-beam 10 and the mine 1, and a fixed beam 12 and a bracket beam 11 are arranged between a pair of supporting I-beams 10; the bracket beam 11 is positioned below the fixed beam 12; the fixed beam 12 is provided with a motor support frame 14 and a second chain wheel 26 support frame 28, and the first chain wheel 26 support frame 13 is fixed on the second chain wheel 26 support frame 28; a chain wheel hinge seat 25 on a driving gear shaft 30 is fixed on the first chain wheel 26 support frame 13, and the chain wheel hinge seat 25 on the first chain wheel 26 support frame 13 is a chain wheel hinge seat 25 far away from a speed reducing motor 29; a push rod bracket 15 for receiving the folding bar unit is provided on the bracket beam 11, and a push link 33 is placed on the push rod bracket 15 when the folding bar unit is in a folded state, as shown in fig. 4.

The sprocket pushing group 6, as shown in 3~6, includes a pair of chains 27 arranged in parallel and connected end to end, and the chains 27 are arranged along the length direction of the slide rail 7; the folding rod unit is fixed on the chain 27; the folding bar unit is located below the chain 27. Specifically, the sprocket pushing group 6 further comprises a driving gear shaft 30 and a driven gear shaft which are horizontally arranged, and the driving gear shaft 30 is connected with an output shaft of the speed reducing motor 29; both ends of the driven gear shaft and both ends of the driving gear shaft 30 are rotatably mounted on a sprocket hinge seat 25 (in fig. 5, both sprocket hinge seats 25 connected to the driving gear shaft 30 are not shown; in fig. 4, both sprocket hinge seats 25 are not shown), the driving gear shaft 30 is provided with a pair of driving sprockets 26, and the driven gear shaft is provided with a pair of driven sprockets 26; the driven chain wheel 26 and the driven chain wheel 26 are matched with the chain 27; the sprocket hinge seats 25 connected to the driving gear shaft 30 are all fixed to the support frame 5. Specifically, as shown in fig. 20 to 21, one of the two sprocket hinge seats 25 connected to the driving gear shaft 30 is fixed to the first sprocket 26 support frame 13, and the other sprocket hinge seat 25 is fixed to the motor support frame 14; two chain wheel hinged seats 25 connected with the driven gear shaft are fixed on a chain wheel 26 support frame on the mine 1. Preferably, a tensioning unit 31 is arranged below the chain 27; the tensioning unit 31 includes a tensioning gear shaft rotatably mounted on the supporting frame 5, and a pair of tensioning gears are disposed on the tensioning gear shaft, one tensioning gear is located below the lower section of one chain 27 and meshed with the chain 27, and the other tensioning gear is located below the lower section of the other chain 27 and meshed with the chain 27, as shown in fig. 6 and 10 to 11. Specifically, the tensioning gear is adjusted and fixed up and down in the sliding groove, and the purpose of tensioning the chain is achieved by adjusting the position of the tensioning gear up and increasing the movable length of the chain.

The folding bar unit, as shown in fig. 5 and 7~9, includes a plate clamp 35, the plate clamp 35 is connected to a folding and pushing frame 8 when the mine car 3 enters the cage 2, and the plate clamp 35 is connected to the mine car 3 when the mine car 3 exits the cage 2. Specifically, the folding bar unit further includes a rigid link 32, a push link 33, and a wire rope 34. The rigid connecting rod 32 is fixed on the lower section of the chain 27, the lower end of the rigid connecting rod 32 is hinged with a pushing connecting rod 33, the lower part of the pushing connecting rod 33 is provided with a steel wire rope 34, and the lower end of the steel wire rope 34 is connected with a plate clamp 35; the rigid link 32 comprises a horizontal rod and a vertical rod fixed to the horizontal rod, the horizontal rod is a hollow structure, and a sleeve is arranged on the horizontal rod and sleeved on the roller of the chain 27.

The folding pushing frame 8, as shown in fig. 12 to 18, is used for pushing the mine car 3, and is located on one side of the mine car 3 away from the cage 2, and includes: a collar base plate 24, a front frame 19, a rear frame 23, side frames 21, and a fixing rod 21. Specifically, the lantern ring bottom plate 24 includes the bottom plate, the cover locates a pair of lantern rings on the slide rail 7, and the lantern ring is fixed in the upper surface of bottom plate, and a pair of lantern ring distributes along the length direction of slide rail 7. As shown in fig. 15 to 17, the bottom plate includes a horizontal plate and a vertical plate fixed on the horizontal plate, and the vertical plate is hinged with a front frame 19 and a rear frame 23; the front frame 19 is connected with the lantern ring bottom plate 24 through a hinge point, and the rear frame 23 is connected with the lantern ring bottom plate 24 through a hinge point; the side frames 21 are hinged between the front frame 19 and the rear frame 23; the rear frame 23 includes a cross member; the front frame 19 is disposed adjacent the mine car 3; the rear side surface of the front frame 19 is hinged with a fixed rod 21, the tail end of the fixed rod 21 is provided with a buckle for clamping the cross beam, and the front side surface of the front frame 19 is provided with a rubber push plate 18; a handle 20 is provided on the top of the front frame 19. As can be seen from fig. 13 to 14, a gap for accommodating the folded thrust frame 8 (in the folded state) exists between the bottom of the mine car 3 and the slide rail 7.

The working principle of the top pushing device for the mine car 3 to automatically enter and exit the cage 2 is as follows:

(1) When the top pushing device does not work

Step 1: the folding and pushing frame 8 is folded and horizontally placed on the inner side of the track 4, so that the pushing space of the mine car 3 is not occupied; the folded state of the folding and pushing frame 8 is shown in fig. 18.

Step 2: the pushing connecting rod 33 of the chain wheel pushing group 6 is lifted and placed on the push rod bracket 15, so that the interference of the subsequent mine car 3 in advancing is avoided.

(2) When the mine car 3 needs to be pushed into the cage 2

When the mine car 3 needs to enter the cage 2, the handle 20 of the folding pushing frame 8 is lifted, then the folding rod unit is connected with the chain wheel pushing group 6 and the folding pushing frame 8, and finally the chain wheel 26 is driven to run to drive the folding pushing frame 8 to move forwards, so that the aim of mechanically pushing the mine car 3 to enter the cage 2 is fulfilled. In the present embodiment, the direction toward the mine shaft 1 is referred to as the "forward" direction.

Step 1: the handle 20 of the foldable pushing frame 8 is lifted to lift the foldable pushing frame 8 in a folded state, so as to drive the front frame 19, the side frames 21 and the rear frame 23 to rotate and move upwards, then the fixing rod 21 is rotated to buckle the buckles of the fixing rod 21 with the cross beam, the fixing rod 21 connects the front frame 19, the side frames 21 and the rear frame 23 into a rigid body, and at this time, the front foldable pushing frame 8 is in an unfolded state, as shown in 1~3.

Step 2: thereafter, the pushing link 33 of the folding bar unit is lowered, and the plate clip 35 is clamped to the rear frame 23 to connect the chain 27 and the folding pushing frame 8.

And step 3: finally, the speed reducing motor 29 is driven in a forward direction, the speed reducing motor 29 drives the chain wheel pushing group 6 to operate so as to drive the chain 27 to move towards the mine 1, so that the chain 27 drives the folding and pushing frame 8 to move towards the mine 1, the folding and pushing frame 8 moves to the position of the mine car 3 and continues to operate, and the rubber push plate 18 pushes the mine car 3 to enter the cage 2.

And 4, step 4: the speed reducing motor 29 is driven in reverse direction to drive the chain wheel 26 to rotate reversely, the driving chain 27 moves backwards, and the rigid connecting rod 32, the lower pushing connecting rod 33, the steel wire rope 34 and the plate clamp 35 are driven to move backwards together, so that the folding pushing frame 8 is driven to move backwards.

And 5: the plate clamp 35 is loosened, the fixing rod 21 on the folding and pushing frame 8 is lifted, the handle 20 of the folding and pushing frame 8 is pressed downwards to drive the front frame 19, the side frames 21 and the rear frame 23 to rotate and move downwards to convert the folding and pushing frame 8 in the unfolded state into the folded state, and then the folding and pushing frame 8 is horizontally placed on the inner side of the track 4.

Step 6: and finally, returning the folding rod unit, specifically, lifting the pushing connecting rod 33 and placing the pushing connecting rod on the push rod bracket 15, so as to avoid the interference of the folding rod unit on the advancing of the next mine car 3.

(3) When the mine car 3 leaves the cage 2

The chain wheel pushing group 6 and the mine car 3 are connected through the folding rod unit, the mine car 3 is driven to move backwards by driving the chain wheel pushing group 6, and the purpose that the mine car 33 is mechanically pushed to leave the cage 2 is achieved.

Step 1: the folding rod unit is unfolded and lowered, then the speed reducing motor 29 is driven in the forward direction, the speed reducing motor 29 drives the chain wheel pushing group 6 to operate so as to drive the chain 27 to move towards the direction of the mine 1 (forward), and therefore the chain 27 drives the folding rod unit to move towards the direction of the mine 1.

Step 2: when the folding rod unit moves to the mine 1, the clamping plate clamp 35 is held on the mine car 3, then the speed reducing motor 29 is driven reversely, the speed reducing motor 29 drives the chain wheel pushing group 6 to operate so as to drive the chain 27 to move in a direction (backwards) away from the mine 1, and therefore the mine car 3 is separated from the cage 2.

And step 3: the plate clamp 35 is loosened, the pushing connecting rod 33 is lifted up and placed on the push rod bracket 15, and the mine car 3 is manually pushed away.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a top pusher jack of automatic business turn over cage of mine car which characterized in that includes:

the track unit is used for allowing a mine car to slide and comprises at least one pair of parallel tracks; a slide rail is arranged on the inner side of the track unit; the sliding rail is arranged along the length direction of the rail;

the supporting frame is arranged above the track unit, a speed reducing motor is arranged on the supporting frame, the output end of the speed reducing motor is connected with one end of a chain wheel pushing group, and the other end of the chain wheel pushing group is fixed on the supporting frame;

the chain wheel pushing group comprises at least one chain which is connected end to end, and the chain is arranged along the length direction of the sliding rail; a folding rod unit is fixed on the chain; the folding rod unit is positioned below the chain;

the folding rod unit comprises a plate clamp, the plate clamp is connected with a folding and pushing frame when the mine car enters the cage, and the plate clamp is connected with the mine car when the mine car exits the cage;

folding migration frame is located one side that the cage was kept away from to the mine car includes: the lantern ring bottom plate comprises a lantern ring sleeved on the sliding rail; a front frame and a rear frame are hinged on the lantern ring bottom plate, and a side frame is hinged between the front frame and the rear frame; the rear frame comprises a cross beam; the front frame is arranged close to the mine car; the rear side surface of the front frame is hinged with a fixed rod, and the tail end of the fixed rod is provided with a buckle for clamping the cross beam.

2. The top pushing device for the automatic entering and exiting of the mine car into and out of the cage according to claim 1, wherein the folding rod unit further comprises a rigid connecting rod fixed on the lower section of the chain, the lower end of the rigid connecting rod is hinged with a pushing connecting rod, the lower part of the pushing connecting rod is provided with a steel wire rope, and the lower end of the steel wire rope is connected with the plate clamp.

3. The top pushing device for automatic entering and exiting of mine cars of claim 2, wherein said rigid connecting rod comprises a horizontal rod and a vertical rod fixed to said horizontal rod, said horizontal rod is a hollow structure, said horizontal rod is provided with a sleeve, said sleeve is sleeved on the roller of said chain.

4. The top pushing device for the automatic entering and exiting of the mine car into and out of the cage according to claim 1, wherein the chain wheel pushing set further comprises a driving gear shaft and a driven gear shaft which are horizontally arranged, and the driving gear shaft is connected with an output shaft of the speed reducing motor; both ends of the driven gear shaft and both ends of the driving gear shaft are rotatably arranged on a chain wheel hinge seat, a driving chain wheel is arranged on the driving gear shaft, and a driven chain wheel is arranged on the driven gear shaft; the driving chain wheel and the driven chain wheel are matched with the chain; the chain wheel hinged seats connected with the driving gear shaft are all fixed on the supporting frame, and the chain wheel hinged seats connected with the driven gear shaft are all fixed on a mine.

5. The top pusher jack for automated mine car entry and exit into and out of a cage of claim 4, wherein said support frame includes a pair of support I-beams positioned outside said rails and secured to the foundation, said pair of support I-beams being positioned opposite each other;

a longitudinal I-beam is respectively arranged between each supporting I-beam and the mine,

a fixed beam and a bracket beam are arranged between the pair of supporting I-beams; the bracket beam is positioned below the fixed beam;

the fixed beam is provided with a motor support frame and a second chain wheel support frame, and the second chain wheel support frame is fixedly provided with a first chain wheel support frame; a chain wheel hinged seat on the driving gear shaft is fixed on the first chain wheel supporting frame;

and a push rod bracket for bearing the folding rod unit is arranged on the bracket beam.

6. The apparatus for pushing the top of a cage for automatic entry and exit of mine cars of claim 1 further comprising a tensioning unit including a tensioning gear shaft rotatably mounted to said support frame, said tensioning gear shaft having a tensioning gear disposed thereon, said tensioning gear being positioned below said chain and engaging said chain.

7. The top pushing device for automatic entering and exiting of mine cars of claim 1, characterized in that the front side of the front frame of the folding and pushing frame is provided with a rubber push plate.

8. A method for automatically moving a mine car into and out of a cage, the top pushing device for the automatic moving of the mine car into and out of the cage according to any one of claims 1 to 7, comprising the steps of:

when the mine car needs to be pushed into the cage, the folding pushing frame in a folding state is lifted to drive the front frame, the side frame and the rear frame to rotate and move upwards, the fixed rod is rotated to buckle the buckle of the fixed rod with the cross beam, and the folding pushing frame forms an unfolding state; then unfolding and putting down the folding rod unit, and clamping the plate clamp on the rear frame so as to connect the chain with the folding pushing frame; and finally, driving a speed reducing motor, wherein the speed reducing motor drives the chain wheel pushing group to operate so as to drive the chain to move towards the mine direction, so that the chain drives the folding pushing frame to move towards the mine direction, and the folding pushing frame operates to the mine car and pushes the mine car to enter the cage.

9. The method for automated mine car entry and exit into and from a cage of claim 8, further comprising the steps of, after the mine car enters the cage: loosening the plate clamp, lifting the fixing rod on the folding pushing frame, driving the front frame, the side frame and the rear frame to rotate and move downwards so as to convert the folding pushing frame in an unfolded state into a folded state, and then flatly placing the folding pushing frame on the inner side of the track; and finally, the folding rod unit is reset.

10. The method for automated mine car entry and exit into and out of a cage of claim 9, further comprising the steps of: when the mine car leaves the cage, the folding rod unit is unfolded and lowered, then the speed reducing motor is driven, the speed reducing motor drives the chain wheel pushing group to operate so as to drive the chain to move towards the mine direction, and therefore the chain drives the folding rod unit to move towards the mine direction;

and moving the folding rod unit to the mine, clamping the clamping plate on the mine car, and then driving the speed reducing motor, wherein the speed reducing motor drives the chain wheel pushing group to move so as to drive the chain to move towards the direction far away from the mine, so that the mine car leaves the cage.

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