A rail lifting device

Abstract

The present application provides a kind of lifting rail device, including being arranged between adjacent vehicles first lifting rail mechanism, the first lifting rail mechanism includes the lifting beam of two ends with the detachable connection of vehicle, at least two oppositely arranged sliding grooves respectively with the two sides connection of the lifting beam, track clamping frame being arranged in the sliding groove can be moved along the length direction of sliding groove;The track clamping frame can be clamped track lifting under the driving of the lifting beam when adjacent vehicle is lifted.Because being arranged in the end of coal roadway transport vehicle, and with adjacent vehicle is detachable connection, it is convenient to install, overhaul and disassemble, and maintenance cost is low.Lifting beam is arranged between adjacent vehicles and has certain length, and track clamping frame slides in sliding groove, and height difference can be reduced or absorbed, so that the time difference of track lifting or falling is reduced, internal stress and external deformation of track are prevented, track is kept in good condition, and the service life of track is prolonged.

Description

Technical Field

[0001] The invention relates to an accessory of a transport vehicle used in underground coal mines, in particular to a rail lifting device. Background Art

[0002] During underground coal mining operations, transport vehicles work with coal mining machinery to continuously advance on the fully mechanized mining face to complete the coal mining operation. Currently, a coal mining roadway transport vehicle group consists of several transport vehicles connected end to end. These groups typically utilize self-propelled rails, meaning the transport vehicle group carries and drives the rails themselves, and then travels on these rails. Currently, coal mining roadway transport vehicles utilize a rail-lifting device installed at the bottom of the vehicle to lift the rails, which then drives the rails in the direction of travel. After the rails have completed their travel, they fall to the ground, and the coal mining roadway transport vehicle continues on the rails. However, because the rail-lifting device is located at the bottom of the vehicle, it is inconvenient to install and inspect, and the maintenance cost is high.

[0003] At the same time, when each vehicle is lifted or lowered by a lifting device such as a hydraulic jack, the lifting or lowering speed is different due to the different total load mass of each vehicle. The speed at which the track is lifted or lowered by the track lifting device installed at the bottom of the vehicle is also different. The track corresponding to the lower part of the vehicle with a heavy load is lifted or lowered slowly, while the track corresponding to the lower part of the vehicle with a light load is lifted or lowered quickly, resulting in different lifting or lowering times for the tracks between different vehicles, causing internal stress and external deformation of the tracks, especially the joints are more susceptible to damage, resulting in damage and destruction of the tracks over time.

[0004] In addition, when one fully mechanized mining face is mined and moved to the next fully mechanized mining face, the coal mining tunnel transport vehicle group cannot use the self-moving track, and it is necessary to lay a turning track for the coal mining tunnel transport vehicle group to travel. At this time, the existing rail lifting device set at the bottom of the vehicle is not suitable for the turning track and needs to be disassembled, which also causes inconvenience in installation and maintenance and high maintenance costs.

[0005] Therefore, there is an urgent need to develop a rail lifting device that is easy to install and repair, has low maintenance cost, and does not cause damage to the track. Summary of the Invention

[0006] The object of the present invention is to provide a rail lifting device, comprising a first rail lifting mechanism 1 arranged between adjacent vehicles, the first rail lifting mechanism 1 comprising a lifting beam 2 whose two ends are detachably connected to the vehicles, at least two oppositely arranged chutes 3 respectively connected to the two sides of the lifting beam 2, and a rail clamping frame 4 arranged in the chutes 3 and movable along the length direction of the chutes 3; the rail clamping frame 4 can clamp the rail and lift it under the drive of the lifting beam 2 when the adjacent vehicle is lifted.

[0007] The rail lifting device of the present invention is arranged at the end of the coal mining tunnel transport vehicle and is detachably connected to the adjacent vehicles, which is convenient for installation, maintenance and disassembly, and has low maintenance costs. The different heights of adjacent vehicles are caused by different lifting or lowering speeds due to different loads. The lifting beam 2 is arranged between adjacent vehicles and has a certain length. The rail clamping frame 4 slides inside the chute 3 to reduce or absorb the height difference so that the time difference of lifting or lowering the rail is reduced, preventing the rail from generating internal stress and external deformation, keeping the rail in good condition, and extending the service life of the rail. It should be understood that the length of the lifting beam 2 and the height of the chute 3 can be adjusted to adapt to different working conditions.

[0008] Preferably, the rail clamping frame 4 includes a slider 41 located at the top that matches the cross-section of the slide groove 3, a connecting plate 42 connected to the slider 41 at one end, and a clamp 43 arranged at the other end of the connecting plate 42. The clamp 43 includes a bearing 44 connected to the connecting plate 42, and a clamp 45 connected to the bearing 44 and matching the shape of the rail.

[0009] In this way, the rail clamping frame 4 can move in the sliding groove 3 and lift or lower the rail by moving.

[0010] Preferably, the slider 41 includes a first slider end 411 and a second slider end 412 located on both sides of the connecting plate 42, and the ends of the slide groove 3 opposite to the first slider end 411 and the second slider end 412 are respectively provided with a first support block 31 and a second support block 32, a first elastic member 51 is provided between the first slider end 411 and the first support block 31, and a second elastic member 52 is provided between the second slider end 412 and the second support block 32, and the first elastic member 51 and the second elastic member 52 are constrained by the connecting plate 42 and the side wall of the slide groove 3.

[0011] An elastic member is provided inside the chute 3 to absorb the height difference caused by the different lifting or lowering speeds of adjacent vehicles due to different loads, so that the lifting or lowering time of the track is basically consistent, preventing the track from generating internal stress and external deformation, keeping the track in good condition and extending the service life of the track.

[0012] Preferably, the chute 3 is provided with a through slit 33 on a side away from the lifting beam 2 , for allowing the rail clamping frame 4 to be installed in the chute 3 .

[0013] In this way, the rail clamping frame 4 can be manufactured as a whole and then installed in the sliding groove 3.

[0014] Preferably, detachable blocking members for restraining the rail clamping frame 4 are provided on both sides of the through-slit 33 of the slide groove 3 .

[0015] This can restrict the rail clamping frame 4 from moving outward from the chute 3 and prevent it from clamping the rail.

[0016] Preferably, the blocking member includes a first sleeve 61 provided on both sides of the through-slit 33 , a rotating sleeve 62 provided between the through-slit 33 , and a first pin 63 passing through the first sleeve 61 and the rotating sleeve 62 .

[0017] This pin-shaft matching structure facilitates installation and constraint control of the track clamping frame 4 .

[0018] Preferably, the blocking member is arranged on the bottom end side of the chute 3 away from the lifting beam 2. In this way, the effect of the rail clamping frame 4 installed at the bottom of the chute is better.

[0019] Preferably, the cross section of the slide groove 3 is rectangular; both ends of the lifting beam 2 overlap with the U-shaped connecting grooves 8 at the front and rear ends of the adjacent vehicle.

[0020] The rectangular cross section of the chute 3 can prevent the rail clamping frame 4 from rotating inside the chute 3, resulting in unstable rail clamping; the overlapping method is convenient for installation, disassembly and maintenance.

[0021] Preferably, it also includes a second track-lifting mechanism 7 arranged at the outer ends of the head vehicle and the tail vehicle, the second track-lifting mechanism 7 includes a connector detachably connected to the front end of the head vehicle or the rear end of the tail vehicle, and clamping members are respectively provided at both ends of the connector and detachably connected to the connector, the clamping member includes a connecting plate 42 connected to the connector, a clamping portion 43 arranged at the other end of the connecting plate 42, the clamping portion 43 includes a bearing 44 connected to the connecting plate 42, and a clamping head 45 connected to the bearing 44 and matching the shape of the track.

[0022] The basic structure of the rail lifting part of the second rail lifting mechanism 7 is the same as that of the first rail lifting mechanism 1, except that the connection part with the vehicle is different to adapt to the special position at the front end of the leading vehicle or the rear end of the trailing vehicle. The detachable connection structure facilitates installation, maintenance and disassembly, and has low maintenance cost.

[0023] Preferably, the connecting member includes a second pin shaft 71 and a second sleeve 72 sleeved on the middle part of the second pin shaft 71, and the second sleeve 72 is against the connecting plate 42 on both sides; the front end of the leading vehicle or the rear end of the trailing vehicle is provided with an inverted U-shaped connecting groove 73, one side of the inverted U-shaped connecting groove 73 is connected to the front end of the leading vehicle or the rear end side wall of the trailing vehicle, and the two arm ends of the inverted U-shaped connecting groove 73 are provided with through holes for the second pin shaft 71 to pass through; the connecting plate 42 is respectively against the second sleeve 72 and the two arms of the inverted U-shaped connecting groove 73, and the side wall of the front end of the leading vehicle or the rear end of the trailing vehicle.

[0024] Through the above structure, the second rail lifting mechanism 7 can be detachably connected to the front end of the leading vehicle or the rear end of the trailing vehicle and be constrained and fixed.

[0025] The rail lifting device of the present invention is installed at the end of a transport vehicle in a coal mining tunnel and is detachably connected to an adjacent vehicle, making it easy to install, inspect, and disassemble, with low maintenance costs. Adjacent vehicles have different heights due to different lifting or lowering speeds caused by different loads. The lifting beam is arranged between the adjacent vehicles and has a certain length. The rail clamping frame slides within the chute to reduce or absorb the height difference, thereby reducing the time difference between lifting and lowering the rail, preventing internal stress and external deformation of the rail, keeping the rail in good condition, and extending the service life of the rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 . Exploded view of the first rail lifting mechanism of a rail lifting device provided in Example 1 of the present invention.

[0027] Figure 2 .Schematic diagram of the structure of the first rail lifting mechanism of a rail lifting device provided in Example 1 of the present invention.

[0028] Figure 3 .Schematic diagram of the structure of the second rail lifting mechanism of a rail lifting device provided in Example 1 of the present invention.

[0029] Figure 4 . Schematic diagram of the connection structure between the first rail lifting mechanism of a rail lifting device provided in Example 1 of the present invention and the U-shaped connecting grooves at both ends of adjacent vehicles.

[0030] Figure 5 . Schematic diagram of the connection structure between the second rail lifting mechanism of a rail lifting device provided in Example 1 of the present invention and the inverted U-shaped connecting grooves at the front end of the first car and the rear end of the tail car.

[0031] in,

[0032] 1. First rail-lifting mechanism; 2. Lifting beam; 3. Slide groove; 31. First support block; 32. Second support block; 33. Through-slit; 4. Rail clamping frame; 41. Slider; 411. First slider end; 412. Second slider end; 42. Connecting plate; 43. Clamping part; 44. Bearing; 45. Clamp; 51. First elastic member; 52. Second elastic member; 61. First sleeve; 62. Rotating sleeve; 63. First pin; 7. Second rail-lifting mechanism; 71. Second pin; 72. Second sleeve; 73. Inverted U-shaped connecting groove; 8. U-shaped connecting groove. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] Example 1:

[0035] like Figure 1 -5, this embodiment provides a rail lifting device, such as Figure 2 As shown, it includes a first rail lifting mechanism 1 arranged between adjacent vehicles, the first rail lifting mechanism 1 includes a lifting beam 2 with both ends detachably connected to the vehicles, at least two oppositely arranged slide grooves 3 respectively connected to both sides of the lifting beam 2, and a rail clamping frame 4 arranged in the slide groove 3 and movable along the length direction of the slide groove 3; the rail clamping frame 4 can clamp the rail for lifting under the drive of the lifting beam 2 when the adjacent vehicle is lifted.

[0036] The rail lifting device of the present invention is arranged at the end of the coal mining tunnel transport vehicle and is detachably connected to the adjacent vehicles, which is convenient for installation, maintenance and disassembly, and has low maintenance costs. The different heights of adjacent vehicles are caused by different lifting or lowering speeds due to different loads. The lifting beam 2 is arranged between adjacent vehicles and has a certain length. The rail clamping frame 4 slides inside the chute 3 to reduce or absorb the height difference so that the time difference of lifting or lowering the rail is reduced, preventing the rail from generating internal stress and external deformation, keeping the rail in good condition, and extending the service life of the rail. It should be understood that the length of the lifting beam 2 and the height of the chute 3 can be adjusted to adapt to different working conditions.

[0037] Preferably, Figure 1 As shown, the track clamping frame 4 includes a slider 41 located at the top that matches the cross-section of the slide groove 3, a connecting plate 42 connected to the slider 41 at one end, and a clamping portion 43 arranged at the other end of the connecting plate 42. The clamping portion 43 includes a bearing 44 connected to the connecting plate 42, and a clamping head 45 connected to the bearing 44 and matching the shape of the track.

[0038] In this way, the rail clamping frame 4 can move in the sliding groove 3 and lift or lower the rail by moving.

[0039] Preferably, Figure 1 As shown, the slider 41 includes a first slider end 411 and a second slider end 412 located on both sides of the connecting plate 42, and the ends of the slide groove 3 opposite to the first slider end 411 and the second slider end 412 are respectively provided with a first support block 31 and a second support block 32, a first elastic member 51 is provided between the first slider end 411 and the first support block 31, and a second elastic member 52 is provided between the second slider end 412 and the second support block 32, and the first elastic member 51 and the second elastic member 52 are constrained by the connecting plate 42 and the side wall of the slide groove 3.

[0040] An elastic member (e.g., a spring) is provided inside the chute 3 to absorb the height difference caused by the different lifting or lowering speeds of adjacent vehicles due to different loads, so that the lifting or lowering time of the track is basically consistent, preventing the track from generating internal stress and external deformation, keeping the track in good condition, and extending the service life of the track.

[0041] Preferably, as shown in FIG1 , the chute 3 is provided with a through slit 33 on a side away from the lifting beam 2 , for allowing the rail clamping frame 4 to be installed in the chute 3 .

[0042] In this way, the rail clamping frame 4 can be manufactured as a whole and then installed in the sliding groove 3.

[0043] Preferably, Figure 2 As shown, detachable blocking members for restraining the rail clamping frame 4 are provided on both sides of the through-slit 33 of the slide groove 3 .

[0044] This can restrict the rail clamping frame 4 from moving outward from the slide groove 3, thereby preventing the rail from being clamped.

[0045] Preferably, Figure 1 As shown, the blocking member includes a first sleeve 61 provided on both sides of the through-slit 33 , a rotating sleeve 62 provided between the through-slit 33 , and a first pin 63 passing through the first sleeve 61 and the rotating sleeve 62 .

[0046] This pin-shaft matching structure facilitates installation and constraint control of the track clamping frame 4 .

[0047] Preferably, Figure 2 As shown, the blocking member is arranged on the bottom side of the chute 3 away from the lifting beam 2. The effect of the rail clamping frame 4 installed at the bottom of the chute is better.

[0048] Preferably, Figure 4 As shown, the cross section of the slide groove 3 is rectangular; both ends of the lifting beam 2 overlap with the U-shaped connecting grooves 8 at the front and rear ends of the adjacent vehicle.

[0049] The rectangular cross section of the chute 3 can prevent the rail clamping frame 4 from rotating inside the chute 3, resulting in unstable rail clamping; the overlapping connection method is convenient for installation, disassembly and maintenance.

[0050] Preferably, Figure 3 As shown, it also includes a second track-lifting mechanism 7 arranged at the outer ends of the head vehicle and the tail vehicle, the second track-lifting mechanism 7 includes a connector detachably connected to the front end of the head vehicle or the rear end of the tail vehicle, and clamping members are respectively provided at both ends of the connector and detachably connected to the connector, the clamping member includes a connecting plate 42 connected to the connector, a clamping portion 43 arranged at the other end of the connecting plate 42, the clamping portion 43 includes a bearing 44 connected to the connecting plate 42, and a clamping head 45 connected to the bearing 44 and matching the shape of the track.

[0051] The basic structure of the rail lifting part of the second rail lifting mechanism 7 is the same as that of the first rail lifting mechanism 1, except that the connection part with the vehicle is different to adapt to the special position at the front end of the leading vehicle or the rear end of the trailing vehicle. The detachable connection structure facilitates installation, maintenance and disassembly, and has low maintenance cost.

[0052] Preferably, Figure 5 As shown, the connecting member includes a second pin shaft 71 and a second sleeve 72 sleeved on the middle part of the second pin shaft 71, and the second sleeve 72 is against the connecting plate 42 on both sides; the front end of the leading vehicle or the rear end of the trailing vehicle is provided with an inverted U-shaped connecting groove 73, one side of the inverted U-shaped connecting groove 73 is connected to the front end of the leading vehicle or the rear end side wall of the trailing vehicle, and the two arm ends of the inverted U-shaped connecting groove 73 are provided with through holes for the second pin shaft 71 to pass through; the connecting plate 42 is respectively against the second sleeve 72 and the two arms of the inverted U-shaped connecting groove 73, and the side wall of the front end of the leading vehicle or the rear end of the trailing vehicle.

[0053] Through the above structure, the second rail lifting mechanism 7 can be detachably connected to the front end of the leading vehicle or the rear end of the trailing vehicle and be constrained and fixed.

Claims

1. A rail lifting device, characterized in that: The invention comprises a first rail lifting mechanism (1) arranged between adjacent vehicles, wherein the first rail lifting mechanism (1) comprises a lifting beam (2) whose two ends are detachably connected to the vehicles, at least two oppositely arranged chutes (3) respectively connected to both sides of the lifting beam (2), and a rail clamping frame (4) arranged in the chutes (3) and capable of moving along the length direction of the chutes (3); when the adjacent vehicle is lifted, the rail clamping frame (4) is driven by the lifting beam (2) to clamp the rail for lifting; The track clamping frame (4) includes a slider (41) at the top that matches the cross section of the slide groove (3), a connecting plate (42) connected to the slider (41) at one end, a clamping portion (43) provided at the other end of the connecting plate (42), the clamping portion (43) including a bearing (44) connected to the connecting plate (42), and a clamping head (45) connected to the bearing (44) and matching the shape of the track; The slider (41) includes a first slider end (411) and a second slider end (412) located on both sides of the connecting plate (42); a first support block (31) and a second support block (32) are provided at one end of the slide groove (3) opposite to the first slider end (411) and the second slider end (412); a first elastic member (51) is provided between the first slider end (411) and the first support block (31); a second elastic member (52) is provided between the second slider end (412) and the second support block (32); the first elastic member (51) and the second elastic member (52) are constrained by the connecting plate (42) and the side wall of the slide groove (3).

2. The rail lifting device according to claim 1, characterized in that The slide groove (3) is provided with a through-slit (33) on a side away from the lifting beam (2), which is used to install the track clamping frame (4) into the slide groove (3).

3. The rail lifting device according to claim 2, characterized in that: Removable blocking members for restraining the track clamping frame (4) are provided on both sides of the through-slit (33) of the slide groove (3).

4. The rail lifting device according to claim 3, characterized in that: The blocking member comprises a first sleeve (61) arranged on both sides of the through-slit (33), a rotating sleeve (62) arranged between the through-slit (33), and a first pin (63) passing through the first sleeve (61) and the rotating sleeve (62).

5. The rail lifting device according to claim 3, characterized in that: The blocking member is arranged on the bottom end side of the sliding groove (3) away from the lifting beam (2).

6. The rail lifting device according to claim 1, characterized in that: The cross section of the slide groove (3) is rectangular; the two ends of the lifting beam (2) overlap with the U-shaped connecting grooves (8) at the front and rear ends of the adjacent vehicle.

7. The rail lifting device according to claim 1, characterized in that: The invention also includes a second track-lifting mechanism (7) arranged at the outer ends of the head vehicle and the tail vehicle, the second track-lifting mechanism (7) including a connector detachably connected to the front end of the head vehicle or the rear end of the tail vehicle, a clamping member provided at both ends of the connector and detachably connected to the connector, the clamping member including a connecting plate (42) connected to the connector, a clamping portion (43) arranged at the other end of the connecting plate (42), the clamping portion (43) including a bearing (44) connected to the connecting plate (42), and a clamping head (45) connected to the bearing (44) and matching the shape of the track.

8. The rail lifting device according to claim 7, characterized in that: The connecting member comprises a second pin shaft (71) and a second sleeve (72) sleeved on the middle of the second pin shaft (71), and the second sleeve (72) abuts against the connecting plate (42) on both sides; the front end of the leading vehicle or the rear end of the trailing vehicle is provided with an inverted U-shaped connecting groove (73), one side of the inverted U-shaped connecting groove (73) is connected to the side wall of the front end of the leading vehicle or the rear end of the trailing vehicle, and the ends of the two arms of the inverted U-shaped connecting groove (73) are provided with through holes for the second pin shaft (71) to pass through; the connecting plate (42) abuts against the second sleeve (72) and the two arms of the inverted U-shaped connecting groove (73), and the side wall of the front end of the leading vehicle or the rear end of the trailing vehicle respectively.

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