Pedal device and hydraulic support for coal mining

Abstract

The invention discloses a pedal device and a hydraulic support for coal mining, which are applied to the field of equipment for coal mining, the pedal device comprises: a support plate body, the first end of the support plate body along the first direction is used for being hinged on a support surface of a hydraulic support body, and the second end can be close to or far away from the support surface; the pedal single body assemblies are sequentially arranged in the second direction, each pedal single body assembly comprises a left pedal single body and a right pedal single body, and the rotating shaft direction of the left pedal single body and the rotating shaft direction of the right pedal single body are perpendicular to the second direction; one of the left pedal single body and the right pedal single body can be turned over and inclined, and the left pedal single body and the right pedal single body can be inclined towards different directions; wherein the first direction is parallel to the advancing direction of the hydraulic support body, and the second direction is perpendicular to the first direction. The pedal device provided by the invention can be suitable for various different scenes, is convenient to operate, and can ensure safe passage of workers under different coal mining working conditions.

Description

Technical Field

[0001] The present invention relates to the field of coal mining equipment, and particularly to a footrest device and a hydraulic support for coal mining. Background Art

[0002] During the underground coal mining process, due to the complex conditions of the laid floor, the angle of the hydraulic support body will change with the height of the floor during the advancing process; when encountering a pitching mining and a large dip coal mining face, the staff needs to work on the inclined working surface, which is difficult to move, consumes a large amount of physical strength, and at the same time, the underground environment is wet and slippery, which is easy to cause personnel to slip, increasing potential safety hazards.

[0003] Therefore, how to improve the applicability of the footrest device is a technical problem that those skilled in the art need to solve at present. Summary of the Invention

[0004] The purpose of the present invention is to provide a footrest device and a hydraulic support for coal mining, which can adapt to the complex floor environment of the mine and facilitate personnel walking.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A footrest device includes:

[0007] A support plate body, a first end of the support plate body in a first direction is used for being hinged on a support surface of the hydraulic support body, and a second end can be close to or away from the support surface;

[0008] A plurality of pedal monomer components, each of the pedal monomer components is arranged in sequence in a second direction, each of the pedal monomer components includes a left pedal monomer and a right pedal monomer, the left pedal monomer and the right pedal monomer are both hinged on the support plate body, and the rotation axis directions of the left pedal monomer and the right pedal monomer are perpendicular to the second direction; the left pedal monomer and the right pedal monomer can selectively flip and tilt, and moreover, the left pedal monomer and the right pedal monomer can tilt towards different directions;

[0009] Wherein, the first direction is parallel to the advancing direction of the hydraulic support body, and the second direction is perpendicular to the first direction.

[0010] On the other hand, it further includes a depression angle connecting seat and a depression angle adjusting plate, the depression angle connecting seat is used for being fixedly arranged on the support surface, and the depression angle adjusting plate is fixedly arranged at the bottom of the second end of the support plate body along the first direction; a plurality of depression angle adjusting holes are arranged on the depression angle connecting seat and / or the depression angle adjusting plate, each of the depression angle adjusting holes is arranged at intervals in a direction perpendicular to the support plate body, and the depression angle adjusting holes of the depression angle connecting seat and the depression angle adjusting holes of the depression angle adjusting plate are selectively matched and clamped.

[0011] On the other hand, it further includes a depression angle clamping pin which is detachably passed through the depression angle adjusting holes of the depression angle connecting seat and the depression angle adjusting plate; and when the depression angle adjusting hole on the depression angle connecting seat away from the support plate body is clamped with the depression angle adjusting hole on the depression angle adjusting plate close to the support plate body, the support plate body is parallel to the support surface.

[0012] On the other hand, it further includes an elevation angle connecting seat, an elevation angle adjusting rib plate and an elevation angle support plate. The elevation angle connecting seat is used for being fixedly arranged on the support surface. The elevation angle adjusting rib plate is fixedly arranged at the bottom of the second end of the support plate body along the first direction, and the extending direction of the elevation angle adjusting rib plate is parallel to the first direction; one end of the elevation angle support plate is hinged to the elevation angle connecting seat, the other end is connected to the elevation angle adjusting rib plate, and the connection position of the elevation angle support plate and the elevation angle adjusting rib plate is adjustable.

[0013] On the other hand, a plurality of elevation angle limiting holes are arranged on the elevation angle adjusting rib plate in its extending direction, and the elevation angle support plate is selectively clamped with each of the elevation angle limiting holes.

[0014] On the other hand, it further includes a pedal connecting seat and an ear plate. The ear plate is hinged to the pedal connecting seat. The pedal connecting seat is used for being fixedly arranged on the support surface. The elevation angle adjusting rib plate extends from the first end to the second end of the support plate body along the first direction, and the ear plate is fixedly arranged on the elevation angle adjusting rib plate.

[0015] On the other hand, the support plate body includes a lower layer strength plate and an upper layer anti-slip plate, and the lower layer strength plate is fixedly connected to the upper layer anti-slip plate.

[0016] On the other hand, both the left pedal monomer and the right pedal monomer include a rotation limiting plate and a pedal body. One side of the pedal body along the second direction is hinged to the support plate body, and the other side is hinged to the rotation limiting plate. A plurality of limiting grooves are arranged on the support plate body, and the limiting grooves are arranged at intervals along the second direction, and the rotation limiting plate can be selectively clamped with the limiting grooves to change the inclination angle of the pedal body.

[0017] On the other hand, a plugging convex platform is arranged on one side of the rotation limiting plate away from the pedal body. The plugging convex platform can penetrate through the limiting groove. Limiting steps are formed on at least one side of the rotation limiting plate where the plugging convex platform is located, and the limiting steps can be clamped with the edge of the limiting groove.

[0018] And / or, it further includes a limiting member which is detachably installed on the plugging convex platform to prevent the plugging convex platform from disengaging from the limiting groove.

[0019] The present invention also provides a hydraulic support for coal mining, which includes a hydraulic support body and the footrest device described in any one of the above.

[0020] The footrest device provided by the present invention includes: a support plate body, the first end of the support plate body in the first direction is used for being hinged on the support surface of the hydraulic support body, and the second end can be close to or far away from the support surface; a plurality of pedal monomer components, each of the pedal monomer components is arranged in sequence in the second direction, each of the pedal monomer components includes a left pedal monomer and a right pedal monomer, the left pedal monomer and the right pedal monomer are both hinged on the support plate body, and the rotation axes of the left pedal monomer and the right pedal monomer are perpendicular to the second direction; the left pedal monomer and the right pedal monomer can be selectively flipped and tilted, and moreover, the left pedal monomer and the right pedal monomer can be tilted in different directions; wherein, the first direction is parallel to the advancing direction of the hydraulic support body, and the second direction is perpendicular to the first direction. The footrest device provided by the present invention changes the inclination angle of the support plate body in the first direction by adjusting the second end of the support plate body in the first direction to be close to or far away from the support surface, so as to be applicable to the adjustment of the hydraulic support body in two cases of depression angle or elevation angle; at the same time, through the setting of the pedal monomer components and by using the flipping and tilting of the left pedal monomer and the right pedal monomer, when the hydraulic support body has a large inclination angle in the left-right direction, by adjusting the left pedal monomer and the right pedal monomer, a relatively horizontal footrest plane can be provided for the staff; this footrest device can be applicable to a variety of different scenarios, is convenient to operate, and can ensure the safe passage of the staff under different coal mining working conditions.

[0021] In one embodiment, both the left pedal monomer and the right pedal monomer include a rotation limiting plate and a pedal body, one side of the pedal body in the second direction is hinged to the support plate body, and the other side is hinged to the rotation limiting plate. A plurality of limiting grooves are provided on the support plate body, each of the limiting grooves is arranged at intervals in the second direction, and the rotation limiting plate can be selectively clamped with the limiting grooves to change the inclination angle of the pedal body. With the above setting, the adjustment of the inclination angle of the pedal body is realized through the adjustment and limitation of the rotation limiting plate, which is convenient for the staff to step on the pedal body. By using the interval arrangement of the limiting grooves, only by changing the position of the rotation limiting plate and selecting a suitable limiting groove to cooperate and clamp with it, the adjustment of the angle of the pedal body can be realized, the operation is convenient, and the position of the pedal body is stable.

[0022] The hydraulic support for coal mining provided by the present invention is provided with the above footrest device. Since the footrest device has the above technical effects, the hydraulic support for coal mining provided with this footrest device should also have corresponding technical effects. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the related art, the following will briefly introduce the drawings required for use in the description of the embodiments or the related art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 Structural schematic diagram of a specific embodiment of the footrest device provided by the present invention;

[0025] Figure 2 For Figure 1 Front view of the footrest device shown;

[0026] Figure 3 For Figure 1 Side view of the footrest device shown;

[0027] Figure 4 For Figure 1 Bottom structural schematic diagram of the footrest device shown;

[0028] Figure 5 For Figure 1 Top view of the footrest device shown;

[0029] Figure 6 For Figure 1 Structural schematic diagram of the footrest device after being assembled with the hydraulic support body;

[0030] Figure 7 For Figure 6 Side view of the structural schematic diagram shown;

[0031] Figure 8 Structural schematic diagram of the footrest device provided by the present invention under the condition of stepping on the footrest downward;

[0032] Figure 9 Structural schematic diagram of the footrest device provided by the present invention under the condition of stepping on the footrest upward;

[0033] Figure 10 Structural schematic diagram of the footrest device provided by the present invention under the condition of a large inclination angle.

[0034] Reference numerals:

[0035] Hydraulic support body 001; supporting surface 002; bottom plate 003;

[0036] Support plate body 100; lower layer strength plate 101; upper layer anti-slip plate 102; pedal monomer assembly 200; left pedal monomer 201; right pedal monomer 202; rotation limiting plate 203; insertion boss 203-1; limiting step 203-2; pedal body 204; limiting groove 205; limiting part 206; depression angle connecting seat 301; depression angle adjusting plate 302; depression angle adjusting hole 303; depression angle clamping pin 304; elevation angle connecting seat 401; elevation angle adjusting rib plate 402; elevation angle support plate 403; elevation angle limiting hole 404; elevation angle clamping pin 405; pedal connecting seat 501; ear plate 502. Detailed implementation mode

[0037] The core of the present invention is to provide a foot pedal device and a hydraulic support for coal mining, which can significantly improve the applicable range, be convenient to operate and reliable in use.

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0039] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0040] Please refer to Figures 1 to 9 , Figure 1 , which is a structural schematic diagram of a specific implementation mode of the foot pedal device provided by the present invention; Figure 2 is Figure 1 the front view of the foot pedal device shown; Figure 3 is Figure 1 the side view of the foot pedal device shown; Figure 4 is Figure 1 the bottom structural schematic diagram of the foot pedal device shown; Figure 5 is Figure 1 the top view of the foot pedal device shown; Figure 6 is Figure 1 the structural schematic diagram of the foot pedal device after being assembled with the hydraulic support body shown; Figure 7 is Figure 6 the side view of the structural schematic diagram shown; Figure 8 is the structural schematic diagram of the foot pedal device provided by the present invention under the condition of depressing the pedal; Figure 9 is the structural schematic diagram of the foot pedal device provided by the present invention under the condition of raising the pedal; Figure 10 is the structural schematic diagram of the foot pedal device provided by the present invention under the condition of large inclination angle.

[0041] In this embodiment, the footrest device includes:

[0042] A support plate body 100, the first end of the support plate body 100 in the first direction is used for being hinged on the support surface 002 of the hydraulic support body 001, and the second end can be close to or away from the support surface 002;

[0043] A number of pedal monomer components 200, each pedal monomer component 200 is arranged in sequence in the second direction, each pedal monomer component 200 includes a left pedal monomer 201 and a right pedal monomer 202, both the left pedal monomer 201 and the right pedal monomer 202 are hinged on the support plate body 100, and the rotation axis directions of the left pedal monomer 201 and the right pedal monomer 202 are perpendicular to the second direction; the left pedal monomer 201 and the right pedal monomer 202 can be selectively flipped and tilted, and moreover, the left pedal monomer 201 and the right pedal monomer 202 can be tilted in different directions; specifically, when the left pedal monomer 201 in each pedal monomer component 200 is flipped and tilted, the right pedal monomer 202 remains stationary, and when the right pedal monomer 202 is flipped and tilted, the left pedal monomer 201 remains stationary;

[0044] Wherein, the first direction is parallel to the advancing direction of the hydraulic support body 001, and the second direction is perpendicular to the first direction.

[0045] Specifically, during the underground coal mining process, generally a floor 003 is laid, and the hydraulic support body 001 travels on the floor 003. However, due to the complex underground environment, the floor 003 will have problems of unevenness, resulting in a change in the angle of the support surface 002 of the hydraulic support body 001, and the staff needs to work on the inclined support surface 002; the change in the angle of the support surface 002 makes the working conditions of the staff include flat mining, downward mining, upward mining, and large inclination working conditions. Flat mining means that when the support surface 002 of the hydraulic support body 001 is in the horizontal direction, downward mining means that the height of the front end of the support surface 002 of the hydraulic support body 001 in the advancing direction is lower than the height of the rear end, that is, the staff is in a downhill, upward mining means that the height of the front end of the support surface 002 of the hydraulic support body 001 in the advancing direction is higher than the height of the rear end, that is, the staff is in an uphill, and large inclination means that an inclination angle is formed on both sides of the advancing direction of the support surface 002 of the hydraulic support body 001. Of course, in actual working conditions, it is also possible that downward mining and large inclination occur simultaneously, or upward mining and large inclination occur simultaneously, etc.; the purpose of this footrest device is to adjust the support plate body 100 so that the support plate body 100 can be kept as horizontal as possible under any working conditions, adapt to the complex floor 003 environment of the mine, and facilitate personnel walking.

[0046] The pedal device adjusts the second end of the support plate body 100 along the first direction to be close to or away from the support surface 002, so as to change the inclination angle of the support plate body 100 along the first direction, thereby being applicable to the adjustment of the hydraulic support body 001 in two cases of depression angle or elevation angle; at the same time, through the setting of the pedal monomer assembly 200 and by using the flipping and inclination of the left pedal monomer 201 and the right pedal monomer 202, when the hydraulic support body 001 has a large inclination angle in the left-right direction, the left pedal monomer 201 and the right pedal monomer 202 can be adjusted to provide a relatively horizontal pedal plane for the staff; the pedal device can be applicable to a variety of different scenarios, is convenient to operate, and can ensure the safe passage of the staff under different coal mining working conditions.

[0047] In some embodiments, the left pedal monomer 201 and the right pedal monomer 202 are symmetrically arranged along the second direction, which can ensure the uniformity of force; specifically, the hinge position of the left pedal monomer 201 and the support plate body 100 and the hinge position of the right pedal monomer 202 and the support plate body 100 can be adjacent, or can share the same hinge shaft, saving space and facilitating installation.

[0048] In some embodiments, it further includes a depression angle connection seat 301 and a depression angle adjustment plate 302. The depression angle connection seat 301 is used to be fixed on the support surface 002, and the depression angle adjustment plate 302 is fixed at the bottom of the second end of the support plate body 100 along the first direction; a plurality of depression angle adjustment holes 303 are provided on the depression angle connection seat 301 and / or the depression angle adjustment plate 302. The depression angle adjustment holes 303 are arranged at intervals along the direction perpendicular to the support plate body 100, and the depression angle adjustment holes 303 of the depression angle connection seat 301 and the depression angle adjustment holes 303 of the depression angle adjustment plate 302 are selectively engaged and clamped; specifically, one depression angle adjustment hole 303 is provided on the depression angle connection seat 301, and a plurality of depression angle adjustment holes 303 are provided on the depression angle adjustment plate 302, or a plurality of depression angle adjustment holes 303 are provided on the depression angle connection seat 301, and one depression angle adjustment hole 303 is provided on the depression angle adjustment plate 302. Of course, in order to facilitate the fixation of the depression angle connection seat 301 and the depression angle adjustment plate 302, it is preferred to provide a plurality of depression angle adjustment holes 303 on both the depression angle connection seat 301 and the depression angle adjustment plate 302; and the interval distance of the depression angle adjustment holes 303 on the depression angle connection seat 301 is the same as the interval distance of the depression angle adjustment holes 303 on the depression angle adjustment plate 302. When the position of the depression angle adjustment plate 302 is determined, a plurality of depression angle adjustment holes 303 can be fixed to ensure the connection strength.

[0049] In some embodiments, it further includes a depression angle clamping pin 304, and the depression angle clamping pin 304 detachably penetrates through the depression angle adjustment holes 303 of the depression angle connection seat 301 and the depression angle adjustment plate 302; and when the depression angle adjustment hole 303 on the depression angle connection seat 301 that is away from the support plate body 100 is clamped with the depression angle adjustment hole 303 on the depression angle adjustment plate 302 that is close to the support plate body 100, the support plate body 100 is parallel to the support surface 002. Specifically, before adjusting the support plate body 100, the depression angle adjustment hole 303 on the depression angle connection seat 301 that is away from the support plate body 100 is clamped with the depression angle adjustment hole 303 on the depression angle adjustment plate 302 that is close to the support plate body 100. At this time, the support plate body 100 is parallel to the support surface 002. When the support surface 002 is horizontal, the support plate body 100 is also in a horizontal state. At this time, it is in the flat stepping condition and no adjustment is required. As Figure 7 shown; when encountering the upward stepping condition, the depression angle connection seat 301 and the depression angle adjustment plate 302 approach each other, thereby adjusting the support plate body 100 to a horizontal state, as Figure 8 shown.

[0050] In some embodiments, it further includes an elevation angle connection seat 401, an elevation angle adjustment rib plate 402, and an elevation angle support plate 403. The elevation angle connection seat 401, the elevation angle adjustment rib plate 402, and the elevation angle support plate 403 can all be metal parts, with high strength and long service life; the elevation angle connection seat 401 is used to be fixedly arranged on the support surface 002, for example, by welding. The elevation angle adjustment rib plate 402 is fixedly arranged at the bottom of the second end of the support plate body 100 along the first direction. The elevation angle adjustment rib plate 402 and the support plate body 100 can also be fixed by welding. The extending direction of the elevation angle adjustment rib plate 402 is parallel to the first direction; one end of the elevation angle support plate 403 is hinged to the elevation angle connection seat 401, and the other end is connected to the elevation angle adjustment rib plate 402, and the connection position of the elevation angle support plate 403 and the elevation angle adjustment rib plate 402 is adjustable; specifically, the elevation angle support plate 403 and the elevation angle connection seat 401 can be hinged through a fixed pin shaft. The elevation angle support plate 403 should have a certain thickness, and the fixed pin shaft can limit the lateral swing of the elevation angle support plate 403. The elevation angle support plate 403 can only swing longitudinally to ensure that when the elevation angle support plate 403 is lifted, it can smoothly match the position of the elevation angle adjustment rib plate 402; specifically, after the connection position of the elevation angle support plate 403 and the elevation angle adjustment rib plate 402 is determined, the position of the elevation angle support plate 403 remains stationary, and the elevation angle support plate 403 can only move when the connection position between the elevation angle support plate 403 and the elevation angle adjustment rib plate 402 needs to be changed; further, the elevation angle adjustment rib plate 402 can be a double-layer structure to improve the strengthening effect on the support plate body 100. At the same time, the elevation angle support plate 403 is connected between the two layers of the elevation angle adjustment rib plate 402 to ensure the connection stability between the elevation angle support plate 403 and the elevation angle adjustment rib plate 402.

[0051] In some embodiments, the elevation adjustment rib plate 402 is provided with a plurality of elevation limit holes 404 in its extending direction. The elevation support plate 403 is selectively clamped with each elevation limit hole 404. By selecting different elevation limit holes 404 to connect with the elevation support plate 403, the inclination angle of the support plate body 100 is changed. Specifically, the elevation limit holes 404 can penetrate through the double-layer structure of the elevation adjustment rib plate 402. The elevation support plate 403 and each elevation limit hole 404 can be connected in cooperation through an elevation clamping pin 405, which is convenient for disassembly and assembly. Further, when the elevation adjustment rib plate 402 is connected to the elevation limit hole 404, at this time, the depression angle connecting seat 301 and the depression angle adjustment plate 302 move away from each other, which is applicable to the depression stepping condition, such as Figure 9 as shown.

[0052] In some embodiments, it further includes a pedal connecting seat 501 and an ear plate 502. The ear plate 502 is hinged to the pedal connecting seat 501. The pedal connecting seat 501 is used to be fixedly arranged on the support surface 002. The elevation adjustment rib plate 402 extends from the first end to the second end of the support plate body 100 in the first direction, and the ear plate 502 is fixedly arranged on the elevation adjustment rib plate 402. Specifically, through the extended arrangement of the elevation adjustment rib plate 402, the strengthening effect of the elevation adjustment rib plate 402 on the support plate body 100 can be improved, thereby improving the support strength of the support plate body 100. The ear plate 502 can be fixedly welded on the elevation adjustment rib plate 402. The setting of the ear plate 502 can facilitate the swing of the support plate body 100.

[0053] In some embodiments, the support plate body 100 includes a lower-layer strength plate 101 and an upper-layer anti-slip plate 102. The lower-layer strength plate 101 is fixedly connected to the upper-layer anti-slip plate 102. The lower-layer strength plate 101 can be a high-strength steel plate, and the upper-layer anti-slip plate 102 can be a pattern steel plate, or uneven portions are provided on the surface of the upper-layer anti-slip plate 102. Any steel type that can ensure the strength of the lower-layer strength plate 101 and the anti-slip effect of the upper-layer anti-slip plate 102 is acceptable, and it is not limited to the types given in this embodiment.

[0054] In some embodiments, both the left pedal unit 201 and the right pedal unit 202 include a rotation limit plate 203 and a pedal body 204. One side of the pedal body 204 along the second direction is hinged to the support plate body 100, and the other side is hinged to the rotation limit plate 203. A plurality of limit grooves 205 are provided on the support plate body 100, and the limit grooves 205 are arranged at intervals along the second direction. The rotation limit plate 203 can be selectively engaged with one of the limit grooves 205 to change the inclination angle of the pedal body 204. With the above arrangement, by adjusting and limiting the rotation limit plate 203, the inclination angle of the pedal body 204 can be adjusted, which is convenient for the staff to step on the pedal body 204. By virtue of the spaced arrangement of the limit grooves 205, only by changing the position of the rotation limit plate 203 and selecting a suitable limit groove 205 to engage with it, the angle adjustment of the pedal body 204 can be achieved. The operation is convenient and the position of the pedal body 204 is stable.

[0055] In some embodiments, as Figure 4 shown, a plug-in boss 203-1 is provided on the side of the rotation limit plate 203 facing away from the pedal body 204. The plug-in boss 203-1 can penetrate the limit groove 205. Limit steps 203-2 are formed on at least one side of the rotation limit plate 203 where the plug-in boss 203-1 is located. The limit steps 203-2 can be engaged with the edge of the limit groove 205. Specifically, the limit steps 203-2 are provided to abut against the upper part of the limit groove 205, so as to prevent the rotation limit plate 203 from extending infinitely into the limit groove 205, playing a role of limiting and supporting. For example, the width of the rotation limit plate 203 in the first direction is greater than the width of the limit groove 205 in the first direction, and the width of the plug-in boss 203-1 in the first direction is less than the width of the limit groove 205 in the first direction. Further, arc transition parts can be provided on both sides of the plug-in boss 203-1, that is, an arc chamfer is provided between the limit steps 203-2 and the plug-in boss 203-1. On the one hand, it can reduce the deformation of the plug-in boss 203-1 and improve the service life of the rotation limit plate 203. On the other hand, it can reduce the damage to the limit groove 205.

[0056] In some embodiments, as Figure 1 and Figure 2As shown, it further includes a limiting member 206 which is detachably installed on the plug-in boss 203-1 to prevent the plug-in boss 203-1 from disengaging from the limiting groove 205. Specifically, after the plug-in boss 203-1 penetrates through the limiting groove 205, the limiting member 206 should be installed at the bottom of the plug-in boss 203-1, that is, the limiting member 206 is located at the bottom of the support plate body 100. The function of the limiting member 206 is to prevent the plug-in boss 203-1 from disengaging from the limiting groove 205, so as to ensure the stable position of the rotating limiting plate 203 and further ensure the stable position of the pedal body 204. Further, the limiting member 206 can be a limiting bolt. The plug-in boss 203-1 is provided with a through hole for the limiting bolt to penetrate. The size of the limiting bolt should be larger than the size of the limiting groove 205. The disassembly and assembly of the limiting bolt are convenient and the material is easy to obtain. When the rotating limiting plate 203 does not need to be adjusted, the limiting member 206 can be directly placed on the plug-in boss 203-1 of the rotating limiting plate 203. Of course, in order to maintain the stability of the rotating limiting plate 203, the limiting member 206 can also fasten the rotating limiting plate 203 to the support plate body 100.

[0057] Specifically, as Figure 10 shown, when encountering the working condition of coal mining with a large dip angle, the hydraulic support body 001 tilts to one side. At this time, lift the rotating limiting plate 203 on one side. For example, the rotating limiting plate 203 of the left pedal unit 201 is lifted, and insert the plug-in boss 203-1 of the rotating limiting plate 203 into the lower limiting groove 205. The limiting groove 205 can be a square groove. Multiple pedal bodies 204 will form a staircase-shaped footrest structure. At the same time, according to the tilt angle of the hydraulic support body 001, the plug-in boss 203-1 of the rotating limiting plate 203 can be inserted into different limiting grooves 205 to adjust the pedal body 204 to be basically horizontal, ensuring the safe passage of personnel. After the plug-in boss 203-1 of the rotating limiting plate 203 extends into the limiting groove 205, it can be fixed by the limiting member 206 to prevent the plug-in boss 203-1 of the rotating limiting plate 203 from disengaging from the limiting groove 205. On the contrary, if the hydraulic support body 001 tilts to the other side, the rotating limiting plate 203 on the other side can be lifted, such as the rotating limiting plate 203 of the right pedal unit 202. Of course, under the working condition of a large dip angle in the coal mining face, the left pedal unit 201 and the right pedal unit 202 in the corresponding pedal unit assembly 200 plate can be lifted according to the inclination direction of the coal seam to form a staircase-shaped structure. At the same time, in cooperation with the working conditions of stepping down and stepping up, it can not only adjust the tilt angle of the pedal body 204 along the second direction, but also adjust the tilt angle of the support plate body 100 along the first direction, so as to form a multi-angle adjustable footrest mechanism.

[0058] In addition to the above pedal device, the present invention also provides a hydraulic support for coal mining including the above pedal device. For the structures of other parts of the hydraulic support for coal mining, please refer to the related art and will not be elaborated herein.

[0059] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference may be made to each other.

[0060] The above has introduced the pedal device provided by the present invention in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A pedal device, characterized in that, Comprising: A support plate body (100), a first end of the support plate body (100) along a first direction is used for being hinged on a support surface (002) of a hydraulic support body (001), and a second end can approach or depart from the support surface (002); A plurality of pedal monomer components (200), each of the pedal monomer components (200) is arranged in sequence along a second direction, each of the pedal monomer components (200) includes a left pedal monomer (201) and a right pedal monomer (202), the left pedal monomer (201) and the right pedal monomer (202) are both hinged on the support plate body (100), and the axis directions of the left pedal monomer (201) and the right pedal monomer (202) are perpendicular to the second direction; the left pedal monomer (201) and the right pedal monomer (202) can alternatively flip and incline, and moreover, the left pedal monomer (201) and the right pedal monomer (202) can incline towards different directions; Wherein, the first direction is parallel to the advancing direction of the hydraulic support body (001), and the second direction is perpendicular to the first direction.

2. The pedal device according to claim 1, wherein It further includes a depression angle connecting seat (301) and a depression angle adjusting plate (302), the depression angle connecting seat (301) is used for being fixedly arranged on the support surface (002), and the depression angle adjusting plate (302) is fixedly arranged at the bottom of the second end of the support plate body (100) along the first direction; a plurality of depression angle adjusting holes (303) are arranged on the depression angle connecting seat (301) and / or the depression angle adjusting plate (302), each of the depression angle adjusting holes (303) is arranged at intervals along a direction perpendicular to the support plate body (100), and the depression angle adjusting holes (303) of the depression angle connecting seat (301) and the depression angle adjusting holes (303) of the depression angle adjusting plate (302) are alternatively matched and clamped.

3. The pedal device according to claim 2, wherein, It further includes a depression angle clamping pin (304), the depression angle clamping pin (304) is detachably penetrated in the depression angle adjusting holes (303) of the depression angle connecting seat (301) and the depression angle adjusting plate (302); and when the depression angle adjusting hole (303) on the depression angle connecting seat (301) departing from the support plate body (100) is clamped with the depression angle adjusting hole (303) on the depression angle adjusting plate (302) close to the support plate body (100), the support plate body (100) is parallel to the support surface (002).

4. The pedal device according to claim 1, wherein, It further includes an elevation angle connecting seat (401), an elevation angle adjusting rib plate (402) and an elevation angle support plate (403), the elevation angle connecting seat (401) is used for being fixedly arranged on the support surface (002), the elevation angle adjusting rib plate (402) is fixedly arranged at the bottom of the second end of the support plate body (100) along the first direction, and the extending direction of the elevation angle adjusting rib plate (402) is parallel to the first direction; one end of the elevation angle support plate (403) is hinged to the elevation angle connecting seat (401), the other end is connected to the elevation angle adjusting rib plate (402), and the connection position of the elevation angle support plate (403) and the elevation angle adjusting rib plate (402) is adjustable.

5. The pedal device according to claim 4, wherein The elevation angle adjustment rib plate (402) is provided with a plurality of elevation angle limiting holes (404) in its extension direction, and the elevation angle support plate (403) is selectively engaged with each elevation angle limiting hole (404).

6. The pedal device according to claim 4, wherein It also includes a pedal connection seat (501) and an ear plate (502), wherein the ear plate (502) is hinged to the pedal connection seat (501), the pedal connection seat (501) is used to be fixed on the support surface (002), the elevation angle adjustment rib plate (402) extends from the first end to the second end of the support plate body (100) along the first direction, and the ear plate (502) is fixed on the elevation angle adjustment rib plate (402).

7. The pedal device according to claim 1, characterized in that The support plate body (100) comprises a lower strength plate (101) and an upper anti-slip plate (102); the lower strength plate (101) is fixedly connected to the upper anti-slip plate (102).

8. The pedal device according to any one of claims 1 to 7, characterized in that The left pedal unit (201) and the right pedal unit (202) both comprise a rotation limiting plate (203) and a pedal body (204); one side of the pedal body (204) along the second direction is hinged to the support plate body (100), and the other side is hinged to the rotation limiting plate (203); a plurality of limiting grooves (205) are provided on the support plate body (100); the limiting grooves (205) are arranged at intervals along the second direction, and the rotation limiting plate (203) can selectively engage with one of the limiting grooves (205) to change the inclination angle of the pedal body (204).

9. The pedal device according to claim 8, wherein A plug-in boss (203-1) is provided on one side of the rotation limit plate (203) away from the pedal body (204), the plug-in boss (203-1) can penetrate the limit groove (205), and a limit step (203-2) is formed on at least one side of the plug-in boss (203-1) on the rotation limit plate (203), and the limit step (203-2) can be engaged with the edge of the limit groove (205); And / or, it also includes a limiting member (206), wherein the limiting member (206) is detachably mounted on the plug-in boss (203-1) to prevent the plug-in boss (203-1) from falling out of the limiting groove (205).

10. A hydraulic support for coal mining, comprising a hydraulic support body (001) and a foot pedal device, characterized in that, The foot pedal device is the foot pedal device according to any one of claims 1 to 9.

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