Pedal device and hydraulic support for coal mining

Abstract

The utility model 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 of the support plate body 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 utility model 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

A foot pedal device and a hydraulic support for coal mining Technical Field

[0001] This utility model relates to the field of coal mining equipment, and in particular to a foot pedal device and a hydraulic support for coal mining. Background Technology

[0002] During underground coal mining, due to the complex conditions of the floor slab, the angle of the hydraulic support body changes with the height of the floor slab during its movement. When encountering steep or large-angle coal mining faces, workers need to work on the inclined working face, which makes movement difficult and physically demanding. At the same time, the underground environment is slippery, which can easily cause personnel to slip and fall, thus increasing safety hazards.

[0003] Therefore, how to improve the applicability of the foot pedal device is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

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

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A foot pedal device, comprising:

[0007] A support plate, wherein a first end of the support plate along a first direction is hinged to the support surface of the hydraulic support body, and a second end is able to approach or move away from the support surface;

[0008] A plurality of pedal unit assemblies are arranged sequentially along a second direction. Each pedal unit assembly includes a left pedal unit and a right pedal unit. The left pedal unit and the right pedal unit are hinged to the support plate, and the rotation axis of the left pedal unit and the right pedal unit is perpendicular to the second direction. The left pedal unit and the right pedal unit can be selectively flipped and tilted, and the left pedal unit and the right pedal unit can tilt in different directions.

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

[0010] On the other hand, it also includes a depression angle connecting seat and a depression angle adjusting plate. The depression angle connecting seat is used to be fixed on the support surface, and the depression angle adjusting plate is fixed on the bottom of the second end of the support plate body along the first direction. The depression angle connecting seat and / or the depression angle adjusting plate are provided with a plurality of depression angle adjusting holes. Each of the depression angle adjusting holes is arranged at intervals along a direction perpendicular to the support plate body, and the depression angle adjusting hole of the depression angle connecting seat and the depression angle adjusting hole of the depression angle adjusting plate are selectively engaged and snapped together.

[0011] On the other hand, it also includes a depression angle locking pin, which is detachably inserted through the depression angle connecting seat and the depression angle adjusting plate in the depression angle adjusting hole; and when the depression angle adjusting hole on the depression angle connecting seat that is away from the support plate body is engaged with the depression angle adjusting hole on the depression angle adjusting plate that is close to the support plate body, the support plate body is parallel to the support surface.

[0012] On the other hand, it also includes an elevation angle connecting seat, an elevation angle adjusting rib, and an elevation angle support plate. The elevation angle connecting seat is used to fix it on the support surface. The elevation angle adjusting rib is fixed to the bottom of the second end of the support plate along the first direction, and the extension direction of the elevation angle adjusting rib is parallel to the first direction. One end of the elevation angle support plate is hinged to the elevation angle connecting seat, and the other end is connected to the elevation angle adjusting rib. The connection position between the elevation angle support plate and the elevation angle adjusting rib is adjustable.

[0013] On the other hand, the elevation angle adjusting rib plate is provided with a plurality of elevation angle limiting holes in its extending direction, and the elevation angle support plate is selectively engaged with one of the elevation angle limiting holes.

[0014] On the other hand, it also includes a pedal connecting seat and an ear plate, the ear plate being hinged to the pedal connecting seat, the pedal connecting seat being fixed on the support surface, the elevation angle adjusting rib extending from the first end of the support plate along the first direction to the second end, and the ear plate being fixed on the elevation angle adjusting rib.

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

[0016] On the other hand, both the left pedal unit and the right pedal unit include a rotating limiting plate and a pedal body. The pedal body is hinged to the support plate on one side along the second direction and to the rotating limiting plate on the other side. The support plate is provided with a plurality of limiting grooves, which are spaced apart along the second direction. The rotating limiting plate can be selectively engaged with one of the limiting grooves to change the tilt angle of the pedal body.

[0017] On the other hand, the rotating limiting plate has a plug-in boss on the side opposite to the pedal body. The plug-in boss can penetrate the limiting groove. A limiting step is formed on at least one side of the rotating limiting plate located on the plug-in boss. The limiting step can engage with the edge of the limiting groove.

[0018] And / or, it also includes a limiting member, which is detachably mounted on the insertion boss to prevent the insertion boss from dislodging from the limiting groove.

[0019] This utility model also provides a hydraulic support for coal mining, including a hydraulic support body and a foot pedal device as described in any one of the above.

[0020] The foot pedal device provided by this utility model includes: a support plate, the first end of which is hinged to the support surface of a hydraulic support body along a first direction, and the second end which can be close to or away from the support surface; a plurality of pedal unit assemblies, each pedal unit assembly arranged sequentially along a second direction, each pedal unit assembly including a left pedal unit and a right pedal unit, both the left and right pedal units being hinged to the support plate, and the rotation axis direction of the left and right pedal units being perpendicular to the second direction; the left and right pedal units can be selectively flipped and tilted, and the left and right pedal units can tilt in different directions; wherein, the first direction is parallel to the forward direction of the hydraulic support body, and the second direction is perpendicular to the first direction. The foot pedal device provided by this utility model changes the tilt angle of the support plate along the first direction by adjusting the second end of the support plate to move closer to or further away from the support surface, thus making it suitable for adjusting the hydraulic support body in both downward and upward angles. Simultaneously, through the arrangement of the pedal unit assembly and the tilting of the left and right pedal units, a relatively horizontal footing surface can be provided for workers when the hydraulic support body exhibits a large tilt angle in the left and right directions. This foot pedal device is applicable to various scenarios, is easy to operate, and ensures safe passage for workers under different coal mining conditions.

[0021] In one embodiment, both the left and right pedal units include a rotating limiting plate and a pedal body. One side of the pedal body along a second direction is hinged to the support plate, and the other side is hinged to the rotating limiting plate. The support plate has several limiting grooves, which are spaced apart along the second direction. The rotating limiting plate can selectively engage with one of the limiting grooves to change the tilt angle of the pedal body. This configuration, through the adjustment and limiting of the rotating limiting plate, allows for adjustment of the tilt angle of the pedal body, facilitating foot operation. Utilizing the spaced arrangement of the limiting grooves, simply changing the position of the rotating limiting plate and selecting a suitable limiting groove for engagement allows for adjustment of the pedal body angle. The operation is convenient, and the position of the pedal body is stable.

[0022] The hydraulic support for coal mining provided by this utility model is equipped with the aforementioned foot pedal device. Since the foot pedal device has the aforementioned technical effects, the hydraulic support for coal mining equipped with this foot pedal device should also have the corresponding technical effects. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 is a structural schematic diagram of a specific embodiment of the foot pedal device provided by this utility model;

[0025] Figure 2 is a front view of the foot pedal device shown in Figure 1;

[0026] Figure 3 is a side view of the foot pedal device shown in Figure 1;

[0027] Figure 4 is a schematic diagram of the bottom structure of the foot pedal device shown in Figure 1;

[0028] Figure 5 is a top view of the foot pedal device shown in Figure 1;

[0029] Figure 6 is a schematic diagram of the assembled foot pedal device and hydraulic support body shown in Figure 1.

[0030] Figure 7 is a side view of the structural schematic diagram shown in Figure 6;

[0031] Figure 8 is a schematic diagram of the foot pedal device provided by this utility model in the case of downward pressing.

[0032] Figure 9 is a schematic diagram of the foot pedal device provided by this utility model in the supine pedaling condition;

[0033] Figure 10 is a structural schematic diagram of the foot pedal device provided by this utility model under high tilt angle conditions.

[0034] Figure label:

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

[0036] Support plate 100; lower strength plate 101; upper anti-slip plate 102; pedal unit assembly 200; left pedal unit 201; right pedal unit 202; rotation limit plate 203; plug-in boss 203-1; limit step 203-2; pedal body 204; limit groove 205; limit piece 206; tilt angle connecting seat 301; tilt angle adjusting plate 302; tilt angle adjusting hole 303; tilt angle locking 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 locking pin 405; pedal connecting seat 501; ear plate 502. Detailed Implementation

[0037] The core of this utility model is to provide a foot pedal device and a hydraulic support for coal mining, which can significantly improve the scope of application, is easy to operate, and is reliable in use.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Please refer to Figures 1 to 9. Figure 1 is a structural schematic diagram of a specific embodiment of the foot pedal device provided by this utility model; Figure 2 is a front view of the foot pedal device shown in Figure 1; Figure 3 is a side view of the foot pedal device shown in Figure 1; Figure 4 is a bottom structural schematic diagram of the foot pedal device shown in Figure 1; Figure 5 is a top view of the foot pedal device shown in Figure 1; Figure 6 is a structural schematic diagram of the foot pedal device shown in Figure 1 after assembly with the hydraulic support body; Figure 7 is a side view of the structural schematic diagram shown in Figure 6; Figure 8 is a structural schematic diagram of the foot pedal device provided by this utility model in the downward pedaling condition; Figure 9 is a structural schematic diagram of the foot pedal device provided by this utility model in the upward pedaling condition; Figure 10 is a structural schematic diagram of the foot pedal device provided by this utility model in the large tilt angle condition.

[0041] In this embodiment, the foot pedal device includes:

[0042] The support plate 100 has a first end along the first direction for hinged to the support surface 002 of the hydraulic support body 001, and a second end that can be close to or away from the support surface 002.

[0043] A plurality of pedal unit assemblies 200 are arranged sequentially along a second direction. Each pedal unit assembly 200 includes a left pedal unit 201 and a right pedal unit 202. Both the left pedal unit 201 and the right pedal unit 202 are hinged to the support plate 100, and the rotation axis direction of the left pedal unit 201 and the right pedal unit 202 is perpendicular to the second direction. The left pedal unit 201 and the right pedal unit 202 can be selectively flipped and tilted, and the left pedal unit 201 and the right pedal unit 202 can tilt in different directions. Specifically, when the left pedal unit 201 is flipped and tilted, the right pedal unit 202 remains stationary, and when the right pedal unit 202 is flipped and tilted, the left pedal unit 201 remains stationary.

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

[0045] Specifically, during underground coal mining, a floor slab 003 is typically laid, and the hydraulic support body 001 travels on it. However, due to the complex underground environment, the floor slab 003 is often uneven, causing changes in the angle of the support surface 002 of the hydraulic support body 001. Workers then need to operate on this inclined support surface 002. These changes in the angle of the support surface 002 result in various working conditions, including horizontal mining, downward mining, upward mining, and mining at large angles. Horizontal mining refers to when the support surface 002 of the hydraulic support body 001 is horizontal, while downward mining refers to when the support surface 002 of the hydraulic support body 001 is lower than the front end of the travel direction. The height at the rear end means the worker is on a downhill slope. Uphill mining means the height of the front end of the support surface 002 of the hydraulic support body 001 in the direction of travel is higher than the height of the rear end, meaning the worker is on an uphill slope. Large inclination angle means that the support surface 002 of the hydraulic support body 001 forms an inclination angle on the left and right sides in the direction of travel. Of course, in actual working conditions, downhill mining and large inclination angle may occur simultaneously, or uphill mining and large inclination angle may occur simultaneously. The purpose of this foot pedal device is to adjust the support plate 100 so that the support plate 100 can remain as horizontal as possible under any working conditions, adapt to the complex environment of the mine floor 003, and facilitate personnel movement.

[0046] This foot pedal device changes the tilt angle of the support plate 100 along the first direction by adjusting the second end of the support plate 100 closer to or further away from the support surface 002, thus adapting it to the adjustment of the hydraulic support body 001 in both downward and upward angles. Simultaneously, through the setting of the pedal unit assembly 200 and the tilting of the left and right pedal units 201 and 202, when the hydraulic support body 001 exhibits a large tilt angle in the left and right directions, adjusting the left and right pedal units 201 and 202 provides workers with a relatively horizontal footing surface. This foot pedal device is suitable for various scenarios, is easy to operate, and ensures safe passage for workers under different coal mining conditions.

[0047] In some embodiments, the left pedal unit 201 and the right pedal unit 202 are symmetrically arranged along the second direction to ensure uniform force distribution. Specifically, the hinge position of the left pedal unit 201 and the support plate 100 can be adjacent to the hinge position of the right pedal unit 202 and the support plate 100, or they can share the same hinge axis, saving space and facilitating installation.

[0048] In some embodiments, a tilt angle connector 301 and a tilt angle adjustment plate 302 are also included. The tilt angle connector 301 is fixed on the support surface 002, and the tilt angle adjustment plate 302 is fixed on the bottom of the second end of the support plate 100 along the first direction. The tilt angle connector 301 and / or the tilt angle adjustment plate 302 are provided with a plurality of tilt angle adjustment holes 303, which are spaced apart along a direction perpendicular to the support plate 100. The tilt angle adjustment holes 303 of the tilt angle connector 301 and / or the tilt angle adjustment plate 302 are selectively engaged. Specifically, the tilt angle connector 301 is provided with one tilt angle adjustment hole 303, and the tilt angle adjustment plate 302... The 02 is provided with multiple tilt angle adjustment holes 303, or the tilt angle connecting seat 301 is provided with multiple tilt angle adjustment holes 303, and the tilt angle adjustment plate 302 is provided with one tilt angle adjustment hole 303. Of course, in order to facilitate the fixing of the tilt angle connecting seat 301 and the tilt angle adjustment plate 302, it is preferable to provide multiple tilt angle adjustment holes 303 on both the tilt angle connecting seat 301 and the tilt angle adjustment plate 302; and the spacing between the tilt angle adjustment holes 303 on the tilt angle connecting seat 301 is the same as the spacing between the tilt angle adjustment holes 303 on the tilt angle adjustment plate 302. When the position of the tilt angle adjustment plate 302 is determined, multiple tilt angle adjustment holes 303 can be fixed to ensure the connection strength.

[0049] In some embodiments, a depression angle locking pin 304 is also included, which is detachably inserted through the depression angle connecting seat 301 and the depression angle adjusting plate 302 in the depression angle adjusting hole 303; and when the depression angle adjusting hole 303 on the depression angle connecting seat 301 facing away from the support plate 100 is engaged with the depression angle adjusting hole 303 on the depression angle adjusting plate 302 near the support plate 100, the support plate 100 is parallel to the support surface 002. Specifically, before adjusting the support plate 100, the tilt adjustment hole 303 on the tilt angle connector 301, which is opposite to the support plate 100, engages with the tilt adjustment hole 303 on the tilt adjustment plate 302, which is close to the support plate 100. At this time, the support plate 100 is parallel to the support surface 002. When the support surface 002 is horizontal, the support plate 100 is also horizontal, which is the flat-stepping condition and does not require adjustment, as shown in Figure 7. When encountering the tilting condition, the tilt angle connector 301 and the tilt adjustment plate 302 move closer to each other, thereby adjusting the support plate 100 to a horizontal state, as shown in Figure 8.

[0050] In some embodiments, the system also includes an elevation angle connecting seat 401, an elevation angle adjusting rib plate 402, and an elevation angle support plate 403. All three components (elevation angle connecting seat 401, elevation angle adjusting rib plate 402, and elevation angle support plate 403) can be made of metal, possessing high strength and long service life. The elevation angle connecting seat 401 is fixed to the support surface 002, for example, by welding. The elevation angle adjusting rib plate 402 is fixed to the bottom of the second end of the support plate body 100 along the first direction. The elevation angle adjusting rib plate 402 and the support plate body 100 can also be fixed by welding. The extension 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, and the other end is connected to the elevation angle adjusting rib plate 402. The connection position between the elevation angle support plate 403 and the elevation angle adjusting rib plate 402 is adjustable. Specifically, the elevation angle support plate 403 and the elevation angle connecting seat 401 can be... The elevation support plate 403 should have a certain thickness due to the hinged connection via a fixed pin. The fixed pin can restrict the lateral swing of the elevation support plate 403, allowing it to swing only longitudinally. This ensures that the elevation support plate 403 can smoothly match the position of the elevation adjustment rib plate 402 when it is raised. Specifically, after the connection position between the elevation support plate 403 and the elevation adjustment rib plate 402 is determined, the position of the elevation support plate 403 remains stationary. The elevation support plate 403 can only be moved when it is necessary to change the connection position between the elevation support plate 403 and the elevation adjustment rib plate 402. Furthermore, the elevation adjustment rib plate 402 can be a double-layer structure to improve the reinforcement effect on the support plate body 100. At the same time, the elevation support plate 403 is connected between the two layers of the elevation adjustment rib plate 402 to ensure the connection stability between the elevation support plate 403 and the elevation adjustment rib plate 402.

[0051] In some embodiments, the elevation angle adjusting rib plate 402 is provided with a plurality of elevation angle limiting holes 404 in its extending direction. The elevation angle support plate 403 is selectively engaged with each of the elevation angle limiting holes 404. By selecting different elevation angle limiting holes 404 to connect with the elevation angle support plate 403, the tilt angle of the support plate 100 can be changed. Specifically, the elevation angle limiting holes 404 can penetrate the double-layer structure of the elevation angle adjusting rib plate 402. The elevation angle support plate 403 and each of the elevation angle limiting holes 404 can be connected by elevation angle locking pins 405 for easy disassembly and assembly. Furthermore, when the elevation angle adjusting rib plate 402 is connected with the elevation angle limiting holes 404, the tilt angle connecting seat 301 and the tilt angle adjusting plate 302 are far apart from each other, which is suitable for the tilting operation, as shown in Figure 9.

[0052] In some embodiments, a pedal connecting seat 501 and an ear plate 502 are also included. The ear plate 502 is hinged to the pedal connecting seat 501. The pedal connecting seat 501 is used to be fixed on the support surface 002. The elevation angle adjusting rib 402 extends from the first end of the support plate 100 along the first direction to the second end, and the ear plate 502 is fixed on the elevation angle adjusting rib 402. Specifically, by extending the elevation angle adjusting rib 402, the strengthening effect of the elevation angle adjusting rib 402 on the support plate 100 can be improved, thereby improving the support strength of the support plate 100. The ear plate 502 can be welded and fixed on the elevation angle adjusting rib 402. The ear plate 502 can facilitate the swinging of the support plate 100.

[0053] In some embodiments, the support plate 100 includes a lower strength plate 101 and an upper anti-slip plate 102, with the lower strength plate 101 and the upper anti-slip plate 102 fixedly connected. The lower strength plate 101 can be a high-strength steel plate, and the upper anti-slip plate 102 can be a patterned steel plate, or the surface of the upper anti-slip plate 102 can be provided with protrusions and depressions. Any type of steel that can ensure the strength of the lower strength plate 101 and the anti-slip effect of the upper anti-slip plate 102 is acceptable and is not limited to the type given in this embodiment.

[0054] In some embodiments, both the left pedal unit 201 and the right pedal unit 202 include a rotating 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 100, and the other side is hinged to the rotating limiting plate 203. The support plate 100 is provided with a plurality of limiting grooves 205, which are spaced apart along the second direction. The rotating limiting plate 203 can selectively engage with one of the limiting grooves 205 to change the tilt angle of the pedal body 204. This configuration, through the adjustment and limiting of the rotating limiting plate 203, allows for adjustment of the tilt angle of the pedal body 204, facilitating foot operation. Utilizing the spaced arrangement of the limiting grooves 205, only the position of the rotating limiting plate 203 needs to be changed, and a suitable limiting groove 205 needs to be selected for engagement; otherwise, the angle of the pedal body 204 can be adjusted. The operation is convenient, and the position of the pedal body 204 is stable.

[0055] In some embodiments, as shown in FIG4, the rotating limiting plate 203 has an insertion boss 203-1 on the side opposite to the pedal body 204. The insertion boss 203-1 can penetrate the limiting groove 205. A limiting step 203-2 is formed on at least one side of the insertion boss 203-1 on the rotating limiting plate 203. The limiting step 203-2 can engage with the edge of the limiting groove 205. Specifically, the limiting step 203-2 is provided to abut against the upper part of the limiting groove 205, thereby preventing the rotating limiting plate 203 from extending into the limiting groove 205 indefinitely, thus achieving the desired effect. The limiting and supporting functions are as follows: For example, the width of the rotating limiting plate 203 in the first direction is greater than the width of the limiting groove 205 in the first direction, and the width of the insertion boss 203-1 in the first direction is less than the width of the limiting groove 205 in the first direction; furthermore, the two sides of the insertion boss 203-1 can be provided with arc-shaped transition parts, that is, there is an arc-shaped chamfer between the limiting step 203-2 and the insertion boss 203-1. On the one hand, it can reduce the deformation of the insertion boss 203-1 and improve the service life of the rotating limiting plate 203; on the other hand, it can reduce the damage to the limiting groove 205.

[0056] In some embodiments, as shown in Figures 1 and 2, a limiting member 206 is also included. The limiting member 206 is detachably mounted on the insertion boss 203-1 to prevent the insertion boss 203-1 from dislodging from the limiting groove 205. Specifically, after the insertion boss 203-1 penetrates the limiting groove 205, the limiting member 206 should be installed at the bottom of the insertion boss 203-1, that is, the limiting member 206 is located at the bottom of the support plate 100. The function of the limiting member 206 is to prevent the insertion boss 203-1 from dislodging from the limiting groove 205, thereby ensuring the stability of the position of the rotating limiting plate 203, and thus ensuring the stability of the position of the pedal body 204. Furthermore, the limiting member 206 can be a limiting bolt. The insertion boss 203-1 is provided with a through hole for the limiting bolt to pass through. The size of the limiting bolt should be larger than the size of the limiting groove 205. The limiting bolt is easy to install and remove and is readily available in materials. When the rotating limiting plate 203 does not need adjustment, the limiting member 206 can be placed directly on the insertion 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 100.

[0057] Specifically, as shown in Figure 10, when encountering steeply inclined coal mining conditions, the hydraulic support body 001 tilts to one side. At this time, the rotating limiting plate 203 on one side is lifted, for example, the rotating limiting plate 203 of the left pedal unit 201 is lifted, and the insertion boss 203-1 of the rotating limiting plate 203 is inserted into the lower limiting groove 205. The limiting groove 205 can be a square groove. Multiple pedal bodies 204 will form a stair-shaped foot pedal structure. Simultaneously, according to the tilt angle of the hydraulic support body 001, the insertion 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 safe passage for personnel. The insertion boss 203-1 of the rotating limiting plate 203 extends into the limiting groove 205. After step 5, the limiting member 206 can be used to fix it to prevent the insertion boss 203-1 of the rotating limiting plate 203 from coming out of the limiting groove 205; conversely, 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 conditions of large inclination angle of 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-like structure. At the same time, it can be used in conjunction with the working conditions of stepping down and stepping up, not only can the inclination angle of the pedal body 204 along the second direction be adjusted, but also the inclination angle of the support plate 100 along the first direction can be adjusted, thereby forming a multi-angle adjustable foot pedal mechanism.

[0058] In addition to the aforementioned foot pedal device, this utility model also provides a hydraulic support for coal mining that includes the aforementioned foot pedal device. For the structure of other parts of the hydraulic support for coal mining, please refer to relevant technologies, which will not be described in detail here.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The foot pedal device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A foot pedal device, characterized in that, include: A support plate (100) has a first end hinged to a support surface (002) of a hydraulic support body (001) along a first direction, and a second end that can be close to or away from the support surface (002); a plurality of pedal unit assemblies (200), each pedal unit assembly (200) arranged sequentially along a second direction, each pedal unit assembly (200) including a left pedal unit (201) and a right pedal unit (202), the left pedal unit (201) and the right pedal unit (202) Both are hinged to the support plate (100), and the rotation axis directions of the left pedal unit (201) and the right pedal unit (202) are perpendicular to the second direction; the left pedal unit (201) and the right pedal unit (202) can be selectively flipped and tilted, and the left pedal unit (201) and the right pedal unit (202) can tilt in different directions; wherein, the first direction is parallel to the forward direction of the hydraulic support body (001), and the second direction is perpendicular to the first direction.

2. The foot pedal device according to claim 1, characterized in that, It also includes a tilt angle connector (301) and a tilt angle adjustment plate (302). The tilt angle connector (301) is fixed on the support surface (002), and the tilt angle adjustment plate (302) is fixed on the bottom of the second end of the support plate body (100) along the first direction. The tilt angle connector (301) and / or the tilt angle adjustment plate (302) are provided with a plurality of tilt angle adjustment holes (303). Each of the tilt angle adjustment holes (303) is arranged at intervals along a direction perpendicular to the support plate body (100), and the tilt angle adjustment holes (303) of the tilt angle connector (301) and the tilt angle adjustment holes (303) of the tilt angle adjustment plate (302) are selectively engaged and snapped together.

3. The foot pedal device according to claim 2, characterized in that, It also includes a depression angle locking pin (304), which is detachably inserted through the depression angle connecting seat (301) and the depression angle adjusting hole (303) of the depression angle adjusting plate (302); and when the depression angle adjusting hole (303) on the depression angle connecting seat (301) facing away from the support plate body (100) is engaged with the depression angle adjusting hole (303) on the depression angle adjusting plate (302) near the support plate body (100), the support plate body (100) is parallel to the support surface (002).

4. The foot pedal device according to claim 1, characterized in that, It also 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 to be fixed on the support surface (002). The elevation angle adjusting rib plate (402) is fixed at the bottom of the second end of the support plate body (100) along the first direction. The extension 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), and the other end is connected to the elevation angle adjusting rib plate (402). The connection position between the elevation angle support plate (403) and the elevation angle adjusting rib plate (402) is adjustable.

5. The foot pedal device according to claim 4, characterized in that, The elevation angle adjusting 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 of the elevation angle limiting holes (404).

6. The foot pedal device according to claim 4, characterized in that, It also includes a pedal connecting seat (501) and an ear plate (502), the ear plate (502) being hinged to the pedal connecting seat (501), the pedal connecting seat (501) being fixed on the support surface (002), the elevation angle adjusting rib plate (402) extending from the first end of the support plate body (100) along the first direction to the second end, and the ear plate (502) being fixed on the elevation angle adjusting rib plate (402).

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

8. The foot pedal device according to any one of claims 1 to 7, characterized in that, Both the left pedal unit (201) and the right pedal unit (202) include a rotating limiting plate (203) and a pedal body (204). The pedal body (204) is hinged to the support plate (100) on one side along the second direction and to the rotating limiting plate (203) on the other side. The support plate (100) is provided with a plurality of limiting grooves (205). Each limiting groove (205) is arranged at intervals along the second direction, and the rotating limiting plate (203) can be selectively engaged with one of the limiting grooves (205) to change the tilt angle of the pedal body (204).

9. The foot pedal device according to claim 8, characterized in that, The rotating limiting plate (203) has a plug-in boss (203-1) on the side opposite to the pedal body (204). The plug-in boss (203-1) can penetrate the limiting groove (205). A limiting step (203-2) is formed on at least one side of the plug-in boss (203-1) on the rotating limiting plate (203). The limiting step (203-2) can engage with the edge of the limiting groove (205). And / or, it also includes a limiting member (206), which is detachably mounted on the plug-in boss (203-1) to prevent the plug-in boss (203-1) from coming 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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