Walking device and coal mining machine

Abstract

The present application relates to a kind of walking device and coal winning machine, belong to coal winning machine technical field, walking device includes rack, drive element is equipped on the rack, transmission mechanism and walking mechanism, walking mechanism includes driving wheel, driven wheel and by a plurality of track shoe head-to-tail connection formed track, track shoe includes meshing end and the connecting end in the two end of meshing end, the connecting ear of both sides of connecting end is set to staggered, first mounting hole for accommodating connecting pin is opened on connecting ear, the end of connecting end away from meshing end is equipped with weight-reducing hole, the side wall of weight-reducing hole is equipped with second mounting hole for accommodating locking piece, the end of locking piece is opposite with connecting pin, the middle part of meshing end is equipped with meshing groove, meshing groove is engaged with driving wheel, driven wheel respectively, the present application can solve the technical problems of the wear degree of track shoe in prior art, self-weight is big.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machine technology, specifically relating to a walking device and a coal mining machine. Background Technology

[0002] Coal mining machines are the core equipment in mechanized coal mining. Used in conjunction with transportation and support equipment, they enable efficient coal production. Because coal mining machines reduce manual labor, improve safety, and achieve high output, high efficiency, and low consumption, they are widely used in coal mining processes. The traveling mechanism of a coal mining machine is a crucial component, primarily providing power for its movement and located at the end of the traveling system. Most existing traveling mechanisms use tracks, which consist of several track plates. The inner surface of each track plate has teeth that mesh with the driven or driving wheels for transmission. These teeth experience significant wear and are prone to damage, affecting usability. The heavy weight of the track plates also increases the load on the driving and driven wheels. Summary of the Invention

[0003] In view of the various shortcomings of the existing technology, a walking device and a coal mining machine are proposed to solve the technical problems of high wear of track plates and heavy weight in the existing technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] In a first aspect, the present invention provides a walking device, including a frame, on which a driving element, a transmission mechanism and a walking mechanism are provided, wherein the driving element is connected to the walking mechanism through the transmission mechanism.

[0006] The traveling mechanism includes a driving wheel, a driven wheel, and a track formed by connecting several track plates end to end. Each track plate includes an engaging end and connecting ends located at both ends of the engaging end. The connecting ends have staggered connecting ears on both sides. The connecting ears have a first mounting hole for accommodating a connecting pin. The end of the connecting end away from the engaging end has a weight-reducing hole. The side wall of the weight-reducing hole has a second mounting hole for accommodating a locking member. The end of the locking member abuts against the connecting pin. The engaging end has an engaging groove in the middle, which engages with the driving wheel and the driven wheel respectively.

[0007] The technical solution is further configured such that a meshing ear is provided on one side of the meshing end, and a third mounting hole is provided on the meshing ear, wherein the center of the third mounting hole is on the same straight line as the center of the first mounting hole.

[0008] The technical solution is further configured such that the side of the track plate that contacts the ground is provided with a plurality of grip teeth, which are evenly distributed along the length of the track plate.

[0009] The technical solution is further configured such that two connecting pins are provided on the same side of the track plate, and the two connecting pins are located at different ends of the track plate.

[0010] The technical solution is further configured such that a pressure cap is provided at the end of the axle of the driven wheel, the pressure cap is connected to the frame through a tensioning bracket, a first oil cavity is formed between the pressure cap and the axle, a bushing is sleeved around the axle, a sealing seat is provided between the bushing and the driven wheel, a second oil cavity is formed between the sealing seat, the bushing and the driven wheel, and the first oil cavity and the second oil cavity are in communication.

[0011] The technical solution is further configured such that the pressure cap is provided with an oil injection hole and a vent hole, the oil injection hole is connected to the first oil chamber and the second oil chamber respectively through an oil injection channel, and the vent hole is connected to the first oil chamber.

[0012] The technical solution is further configured such that the transmission mechanism includes a high-speed end and a low-speed end of a reducer, the driving element, the high-speed end of the reducer, the low-speed end of the reducer and the drive wheel are sequentially connected in a transmission manner, and a support element is provided between the driving element and the frame.

[0013] The technical solution is further configured such that the high-speed end of the reducer includes a high-speed end housing and a transmission assembly, the transmission assembly is located inside the high-speed end housing, the high-speed end housing is provided with a visual level gauge and an oil inlet, and the oil inlet is connected to the main oil pump.

[0014] The technical solution is further configured such that the low-speed end of the reducer adopts a two-stage planetary reduction structure, the first-stage internal gear ring is connected to the driving wheel, the driving wheel has a second-stage internal gear ring, the first-stage planetary carrier is connected to the second-stage sun gear, and the second-stage planetary carrier is fixed to the frame through a support cover.

[0015] Secondly, the present invention also provides a coal mining machine, including the aforementioned walking device.

[0016] The beneficial effects of this invention are:

[0017] By setting weight-reducing holes, the overall weight of the track plates is greatly reduced while ensuring their strength, thus reducing the load on the drive and driven wheels. The track plates are driven by meshing grooves that mesh with the drive and driven wheels, reducing wear. A second mounting hole is set on the side wall of the weight-reducing hole, and the end of the locking component is limited by the connecting pin. The locking component is located inside the weight-reducing hole, preventing it from being damaged by external forces. Attached Figure Description

[0018] Figure 1 This is a front view of the walking device used in an embodiment of the present invention;

[0019] Figure 2 This is a top view of the walking device used in an embodiment of the present invention;

[0020] Figure 3 yes Figure 2 Sectional view of AA;

[0021] Figure 4 This is an axonometric view of the track plate used in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the gripper teeth used in an embodiment of the present invention;

[0023] Figure 6 This is an assembly view of the driven wheel and tensioning bracket used in an embodiment of the present invention;

[0024] Figure 7 yes Figure 6 BB section view;

[0025] Figure 8 This is a schematic diagram of the transmission mechanism used in an embodiment of the present invention;

[0026] Figure 9 yes Figure 8 CC section view.

[0027] In the attached diagram: 100-frame, 200-drive element, 300-transmission mechanism, 400-traveling mechanism, 500-support element, 600-support wheel, 700-tensioning bracket, 800-main oil pump;

[0028] 301-Visual level gauge, 302-High-speed end of reducer, 303-Low-speed end of reducer, 304-High-speed end housing, 305-Oil inlet, 306-First shaft assembly, 307-Second shaft assembly, 308-Third shaft assembly, 309-Fourth shaft assembly, 310-Fifth shaft assembly, 311-First-stage sun gear, 312-First-stage planetary carrier, 313-First-stage internal gear ring, 314-Second-stage sun gear, 315-Second-stage planetary carrier, 316-Support cover;

[0029] 401-Track, 402-Driven wheel, 403-Drive wheel, 404-Meshing end, 405-Connecting end, 406-Connecting ear, 407-Meshing ear, 408-First mounting hole, 409-Third mounting hole, 410-Weight reduction hole, 411-Second mounting hole, 412-Horizontal tooth, 413-Hinge tooth, 414-Meshing groove, 415-Guide protrusion, 416-Wheel axle, 417-Busset, 418-Sealing seat, 419-Pressure cap, 420-First oil chamber, 421-Second oil chamber. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0031] According to an embodiment of the present invention, a walking device is provided; please refer to [link / reference]. Figures 1 to 5 The system includes a frame 100, on which a drive element 200, a transmission mechanism 300, and a walking mechanism 400 are provided. The drive element 200 is connected to the walking mechanism 400 through the transmission mechanism 300.

[0032] The walking mechanism 400 includes a drive wheel 403, a driven wheel 402, and a track 401 formed by connecting several track plates end to end. The track plate 401 includes an engagement end 404 and a connecting end 405 located at both ends of the engagement end 404. The connecting end 405 has staggered connecting ears 406 on both sides. The connecting ears 406 have a first mounting hole 408 for accommodating a connecting pin. The end of the connecting end 405 away from the engagement end 404 has a weight reduction hole 410. The side wall of the weight reduction hole 410 has a second mounting hole 411 for accommodating a locking member. The end of the locking member abuts against the connecting pin. The engagement end 404 has an engagement groove 414 in the middle, which engages with the drive wheel 403 and the driven wheel 402 respectively.

[0033] It should be noted that by setting the weight reduction hole 410, the strength of the track plate is ensured while the overall weight of the track plate is greatly reduced, thus reducing the load on the drive wheel 403 and driven wheel 402. At the same time, there is also a support wheel 600 on the frame 100, which further reduces the load on the drive wheel 403 and driven wheel 402. By setting the meshing groove 414 to mesh with the drive wheel 403 and driven wheel 402, the meshing transmission realizes the operation of the track 401, reducing the wear of the track plate. By setting a second mounting hole 411 on the side wall of the weight reduction hole 410, the end of the locking member is limited by the connecting pin, and the locking member is located in the weight reduction hole 410, avoiding damage to the locking member due to external force.

[0034] Specifically, a notch is formed between adjacent connecting ears 406. The notch and connecting ears 406 cooperate to achieve the meshing and splicing between several track plates, making the connection between track plates more compact.

[0035] In the walking device of this embodiment, please refer to Figures 1 to 5The engagement end 404 has an engagement ear 407 on one side, and a third mounting hole 409 is provided on the engagement ear 407. The center of the third mounting hole 409 is on the same straight line as the center of the first mounting hole 408.

[0036] It should be noted that the centers of the third mounting hole 409 and the first mounting hole 408 are on the same straight line to ensure the installation alignment of the connecting pin and avoid stress concentration that could damage the connecting pin.

[0037] Specifically, the ends of the connecting ear 406 and the meshing ear 407 are both arc-shaped to reduce friction between the track plates and facilitate relative rotation between the track plates.

[0038] In the walking device of this embodiment, please refer to Figures 1 to 5 The track plate has several gripping teeth on the side that contacts the ground, and the gripping teeth are evenly distributed along the length of the track plate.

[0039] It should be noted that the grip teeth include horizontal teeth 412 and herringbone teeth 413. Several horizontal teeth 412 are distributed along a straight line parallel to the length of the track plate, and the herringbone teeth 413 are located at the ends of the track plate. By setting horizontal teeth 412 and herringbone teeth 413, the friction between the track plate and the ground is increased, the grip is increased, and the operational stability of the track 401 is ensured.

[0040] In the walking device of this embodiment, please refer to Figures 1 to 5 Two connecting pins are provided on the same side of the track plate, and the two connecting pins are located at different ends of the track plate.

[0041] It should be noted that the two connecting pins facilitate disassembly and assembly. Simultaneously, the locking element is positioned perpendicular to the connecting pin, and the second mounting hole 411 is positioned according to the length of the connecting pin, allowing the end of the locking element to abut against the connecting pin for axial restraint, ensuring the stability of the track plate connection.

[0042] In the walking device of this embodiment, please refer to Figures 1 to 5 The meshing groove 414 is provided with guide protrusions 415 on both sides. The guide protrusions 415 limit the teeth of the driving wheel 403 and the driven wheel 402 to ensure the meshing effect.

[0043] In the walking device of this embodiment, please refer to Figures 1 to 7The driven wheel axle 416 has a pressure cap 419 at its end. The pressure cap 419 is connected to the frame 100 via a tension bracket 700. A first oil chamber 420 is formed between the pressure cap 419 and the axle 416. A bushing 417 is sleeved around the axle 416. A sealing seat 418 is provided between the bushing 417 and the driven wheel 402. A second oil chamber 421 is formed between the sealing seat 418, the bushing 417, and the driven wheel 402. The first oil chamber 420 and the second oil chamber 421 are in communication.

[0044] It should be noted that the first oil chamber 420 and the second oil chamber 421 are connected to form a closed oil circuit, which increases the oil injection space and can fully guarantee the lubrication effect. When the driven wheel 402 rotates, the lubricating oil circulates in the first oil chamber 420 and the second oil chamber 421, which makes the bushing 417 better lubricated, reduces the friction between the bushing 417 and the wheel axle 416, increases the service life of the driven wheel 402, and reduces the replacement cost.

[0045] Specifically, the bushing 417 is rotatably connected to the axle 416. The bushing 417, the sealing seat 418, and the driven wheel 402 rotate synchronously. The pressure cover 419 is rotatably connected to the sealing seat 418, and the pressure cover 419 is fixedly connected to the axle 416. A floating seal is provided between the pressure cover 419 and the sealing seat 418. During operation, the axle 416 remains stationary, while the driven wheel 402 rotates.

[0046] In the walking device of this embodiment, please refer to Figure 1 The pressure cap 419 is provided with an oil injection hole and a vent hole. The oil injection hole is connected to the first oil chamber 420 and the second oil chamber 421 respectively through an oil injection channel. The vent hole is connected to the first oil chamber 420.

[0047] Specifically, the inside of the pressure cap 419 and the wheel axle 416 are both provided with interconnected oil injection channels, and at the same time, plugs are provided at the oil injection hole and the vent hole.

[0048] Preferably, the oil filling hole and the vent hole have the same structure, which allows the plug to be installed in interchangeable positions.

[0049] In the walking device of this embodiment, please refer to Figures 1 to 9 The transmission mechanism 300 includes a high-speed end 302 and a low-speed end 303 of a reducer. The drive element 200, the high-speed end 302, the low-speed end 303 of the reducer and the drive wheel 403 are sequentially connected in a transmission manner. A support element 500 is provided between the drive element 200 and the frame 100.

[0050] It should be noted that the support element 500 between the drive element 200 and the frame 100 can effectively resist the instantaneous torque when the drive element 200 starts, and also solves the cantilever problem of the high-speed end 302 of the reducer.

[0051] In the walking device of this embodiment, please refer to Figures 1 to 9 The high-speed end 302 of the reducer includes a high-speed end housing 304 and a transmission assembly. The transmission assembly is located inside the high-speed end housing 304. The high-speed end housing 304 is provided with a visual level gauge 301 and an oil inlet 305. The oil inlet 305 is connected to the main oil pump 800.

[0052] Specifically, the transmission assembly includes a first shaft assembly 306, a second shaft assembly 307, a third shaft assembly 308, a fourth shaft assembly 309, and a fifth shaft assembly 310 that are connected in sequence. The first shaft assembly 306 is connected to the drive element 200, and the fifth shaft assembly 310 is connected to the power input end of the low-speed end 303 of the reducer.

[0053] It should be noted that the high-speed end 302 of the reducer has a forced lubrication function. The angle of the high-speed end 302 of the reducer can be adjusted according to the actual space. When the high-speed end 302 of the reducer is at a certain angle, the first shaft assembly 306 and the second shaft assembly 307 may not be lubricated. At this time, the main oil pump 800 can be activated for forced lubrication. At the same time, forced lubrication can reduce the oil temperature.

[0054] In the walking device of this embodiment, please refer to Figures 1 to 9 The low-speed end 303 of the reducer adopts a two-stage planetary reduction structure. The first-stage internal gear ring 313 is connected to the driving wheel 403. The driving wheel 403 has a second-stage internal gear ring. The first-stage planetary carrier 312 is connected to the second-stage sun gear 314. The second-stage planetary carrier 315 is fixed to the frame 100 through the support cover 316.

[0055] Specifically, the connection between the primary internal gear ring 313 and the drive wheel 403 does not use the traditional bolt and pin connection method, but adopts a four-sided circumferential limiting method, which is simple and reliable and can avoid the risks caused by loose bolts. At the same time, the connection between the secondary planetary carrier 315 and the support cover 316 adopts a square head structure, which can both center and transmit power.

[0056] It should be noted that the secondary planetary carrier 315 is connected to the frame 100 and remains fixed. At this point, the secondary planetary reduction structure transforms into a fixed-axis gear train, possessing one degree of freedom. Power is input through the primary sun gear 311 and output in two paths: one path outputs through the primary planetary carrier 312 to the secondary sun gear 314, and then through the secondary planetary gears to the driving gear 403; the other path transmits through the primary planetary gears to the primary internal gear ring 313. Since the primary internal gear ring 313 is connected to the driving gear 403, it outputs power to the driving gear 403. The two outputs converge after passing through the driving gear 403 and are then output together. In other words, a two-stage closed planetary transmission mechanism is used, with the two internal gear rings fixed together, jointly bearing the power output. Because the primary internal gear ring 313 can share some of the output torque, the structural size of the secondary internal gear ring can be reduced, resulting in advantages such as compact structure, large transmission ratio, strong load-bearing capacity, and high transmission efficiency.

[0057] According to an embodiment of the present invention, a coal mining machine is provided, including the aforementioned traveling device.

[0058] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present application should still fall within the scope of the present invention.

Claims

1. A walking device, characterized in that, The system includes a frame, on which a drive element, a transmission mechanism, and a traveling mechanism are provided. The drive element is connected to the traveling mechanism via the transmission mechanism. The traveling mechanism includes a driving wheel, a driven wheel, and a track formed by connecting several track plates end to end. Each track plate includes a meshing end and connecting ends located at both ends of the meshing end. The connecting ends have staggered connecting ears on both sides. The connecting ears have a first mounting hole for accommodating a connecting pin. The end of the connecting end away from the meshing end has a weight-reducing hole with its opening facing away from the meshing end. The side wall of the weight-reducing hole has a second mounting hole for accommodating a locking member. The end of the locking member abuts against the connecting pin. The locking member is located in the weight-reducing hole to prevent damage to the locking member from external forces. The middle part of the meshing end has a meshing groove that meshes with the driving wheel and the driven wheel respectively.

2. The walking device according to claim 1, characterized in that, One side of the meshing end is provided with a meshing ear, and a third mounting hole is provided on the meshing ear. The center of the third mounting hole is on the same straight line as the center of the first mounting hole.

3. The walking device according to claim 1, characterized in that, The track plate has several gripping teeth on the side that contacts the ground, and the gripping teeth are evenly distributed along the length of the track plate.

4. A walking device according to claim 2, characterized in that, Two connecting pins are provided on the same side of the track plate, and the two connecting pins are located at different ends of the track plate.

5. A walking device according to claim 1, characterized in that, The driven wheel has a pressure cap at its axle end. The pressure cap is connected to the frame via a tensioning bracket. A first oil chamber is formed between the pressure cap and the axle. A bushing is fitted around the axle. A sealing seat is provided between the bushing and the driven wheel. A second oil chamber is formed between the sealing seat, the bushing, and the driven wheel. The first oil chamber and the second oil chamber are in communication.

6. A walking device according to claim 5, characterized in that, The pressure cap is provided with an oil injection hole and a vent hole. The oil injection hole is connected to the first oil chamber and the second oil chamber respectively through an oil injection channel, and the vent hole is connected to the first oil chamber.

7. A walking device according to claim 1, characterized in that, The transmission mechanism includes a high-speed end and a low-speed end of a reducer. The drive element, the high-speed end of the reducer, the low-speed end of the reducer, and the drive wheel are sequentially connected in a transmission manner. A support element is provided between the drive element and the frame.

8. A walking device according to claim 7, characterized in that, The high-speed end of the reducer includes a high-speed end housing and a transmission assembly. The transmission assembly is located inside the high-speed end housing. The high-speed end housing is equipped with a visual level gauge and an oil inlet. The oil inlet is connected to the main oil pump.

9. A walking device according to claim 8, characterized in that, The reducer adopts a two-stage planetary reduction structure at the low-speed end. The first-stage internal gear ring is connected to the driving wheel, the driving wheel has a second-stage internal gear ring, the first-stage planetary carrier is connected to the second-stage sun gear, and the second-stage planetary carrier is fixed to the frame through a support cover.

10. A coal mining machine, characterized in that, Includes the walking device according to any one of claims 1-9.

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