Pedal for hydraulic support of pitching mining face
By installing support plates and connectors on the foot pedals of the hydraulic support, and adjusting the pitch angle of the pedals to compensate for the pitch angle of the base, the problem of foot pedal tilting during coal seam mining is solved, achieving safe and convenient passage.
Patent Information
- Application Number
- CN202520092444.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2035-01-15
AI Technical Summary
When mining coal seams from above or below, the foot pedals of the existing hydraulic supports are tilted and cannot be kept horizontal, leading to safety hazards such as workers slipping and bumping into things.
A foot pedal for a hydraulic support in an elevation and depression mining face was designed. By setting a support plate and connecting parts on the pedal, and using a combination of limit shaft and connecting hole, the pitch angle of the pedal can be adjusted to compensate for the pitch angle of the hydraulic support base, so that the pedal always remains horizontal.
It effectively avoids the dangers of slipping and bumping caused by large tilting angles, improves the safety and convenience of personnel passage, and reduces the labor intensity of workers and the risk of missing parts.
Smart Images
Figure CN223536379U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic support technology for fully mechanized coal mining faces, and in particular to a foot pedal for hydraulic supports in inclined and inclined mining faces. Background Technology
[0002] Based on the influence of geological structural changes on coal seams, it is known that the contour lines of the coal seam floor vary significantly, and the coal seam is subjected to compression and bending along its strike. To improve coal recovery, ventilation roadways and conveyor roadways cannot be arranged along the contour lines of the coal seam floor in the longwall mining face. Therefore, longwall mining can only be carried out in an upward or downward direction. This upward or downward mining mainly refers to coal seams with a strike dip angle of -15° to +15°. The unique characteristics of upward and downward mining bring many difficulties to safe, efficient, and mechanized mining, especially the safety of pedestrians at the working face. Currently, the main approach to addressing pedestrian safety in upward and downward mining is to install handrails on the hydraulic support columns and fix footboards to the base of the hydraulic support. However, these footboards are flat and, during upward or downward mining, the base tilts, causing the footboards to tilt as well, resulting in an angle between the footboards and the horizontal plane. This increases the risk of workers slipping and falling, leading to accidents. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a foot pedal for a hydraulic support in an overhead and undercut coal seam, which solves the technical problem that the foot pedal cannot be kept horizontal when tilted during overhead and undercut coal seam mining.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, the foot pedal of this utility model for a hydraulic support in an elevation and depression mining face includes:
[0007] pedal;
[0008] A support plate, which is connected to the pedal and abuts against the base of the hydraulic support;
[0009] Multiple first connectors are provided, each first connector being disposed at one end of the pedal. Each first connector has a strip-shaped hole and multiple first connecting holes along a predetermined arc, and all of the multiple first connecting holes are in communication with the strip-shaped hole.
[0010] Multiple second connectors are provided on the base of the hydraulic support, and multiple first connectors are connected to multiple second connectors in a one-to-one correspondence; the second connectors are provided with second connection holes, and multiple first connection holes on the same first connector can be connected to the corresponding second connection holes on the second connectors through a limiting shaft.
[0011] Optionally, the first connector includes a pair of oppositely arranged ear plates, the ear plates being arc-shaped, and both the strip hole and the first connecting hole being formed on the ear plates.
[0012] Optionally, the strip hole communicates with the sidewall of the first connecting hole, and the opening width at the communication point is greater than the outer diameter of the limiting shaft, so that the limiting shaft can move from the first connecting hole into the strip hole.
[0013] Optionally, the limiting shaft includes a threaded screw and a wing nut, the screw being sleeved in the first connecting hole and the second connecting hole, and the wing nut abutting against the first connecting member.
[0014] Optionally, the support plate is perpendicularly connected to the pedal, and the support plate is arranged along the length direction of the pedal.
[0015] Optionally, the number of the first connector and the second connector is two, and they are arranged along the length direction of the pedal.
[0016] Optionally, the foot pedal for the hydraulic support of the elevation and depression mining face further includes multiple anti-slip components, and the array of multiple anti-slip components is arranged on the pedal.
[0017] Optionally, the anti-slip component includes an anti-slip head and a connecting post connected to each other, and the anti-slip component has a through hole that passes through the anti-slip head and the connecting post, and a bolt is fitted inside the through hole;
[0018] The pedal has multiple stepped holes, the connecting post is fitted into the stepped holes, and the bolt is threaded into the stepped holes.
[0019] Optionally, the anti-slip head is made of a flexible material and has a curved top surface.
[0020] Optionally, the top surface of the anti-slip head is provided with anti-slip texture.
[0021] (III) Beneficial Effects
[0022] This invention compensates for the pitch angle of the hydraulic support base by adjusting the pitch angle of the pedal, ensuring the pedal remains horizontal. This effectively prevents slips and collisions caused by large pitch angles when personnel walk through the pedestrian walkway of the hydraulic support in the up-face mining area, ensuring safe and smooth passage. The first connecting piece has a first connecting hole for limiting movement and a strip hole for avoiding the limiting shaft. Adjusting the pedal pitch angle does not require removing the limiting shaft; it can be done simply by moving and rotating the pedal laterally. Changing the pitch angle is easy, eliminating the need to transport any parts from the surface, thus reducing worker fatigue and preventing the loss of parts. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the foot pedal of the hydraulic support for the elevation and depression mining face according to this utility model;
[0024] Figure 2 This is a schematic diagram of the installation of the foot pedal for the hydraulic support of the excavation face of this utility model;
[0025] Figure 3 This is a schematic diagram of the installation of the foot pedal for the hydraulic support of the inclined mining face according to the present invention, in the first case.
[0026] Figure 4 This is a schematic diagram illustrating the second installation configuration of the foot pedal for the hydraulic support of the inclined mining face according to this utility model.
[0027] Figure 5 This is a schematic diagram illustrating the third installation scenario of the foot pedal for the hydraulic support of the inclined mining face according to this utility model.
[0028] Figure 6 This is a schematic diagram of the back of the foot pedal of the hydraulic support for the elevation and depression mining face of this utility model;
[0029] Figure 7 This is a schematic diagram of the anti-slip component of the foot pedal for a hydraulic support in an elevation and depression mining face according to this utility model.
[0030] [Explanation of Labels in the Attached Image]
[0031] 1: Foot pedal; 11: Pedal; 12: Support plate; 13: First connector; 14: Second connector; 131: First connecting hole; 132: Strip hole; 141: Second connecting hole; 15: Limiting shaft;
[0032] 2: Base;
[0033] 3: Anti-slip component; 31: Anti-slip head; 32: Connecting post. Detailed Implementation
[0034] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper," "lower," etc., are used interchangeably with other directional terms. Figure 1 The orientation is used as a reference.
[0035] While exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.
[0036] like Figure 1-4 As shown, this utility model provides a foot pedal for a hydraulic support in an elevation and depression mining face, which is installed on the base 2 of the hydraulic support for personnel passage. The foot pedal 1 includes a pedal 11, a support plate 12, multiple first connecting parts 13, and multiple second connecting parts 14. The support plate 12 is installed on the back of the pedal 11, abuts against the base 2 of the hydraulic support, and is supported between the pedal 11 and the base 2 of the hydraulic support to compensate for the gap between the pedal 11 and the base 2.
[0037] See Figure 1 Multiple first connectors 13 are disposed at one end of the pedal 11 and located on the back of the pedal 11. Each first connector 13 has a strip-shaped hole 132 and multiple first connecting holes 131 along a predetermined arc. The sidewalls of the multiple first connecting holes 131 are all in through-communication with the sidewalls of the strip-shaped hole 132. Multiple second connectors 14 are disposed on the base 2 of the hydraulic support. When the pedal 11 is installed, the multiple first connectors 13 and multiple second connectors 14 are connected one-to-one. Specifically, each second connector 14 has a second connecting hole 141. Multiple first connecting holes 131 on the same first connector 13 are connected to the corresponding second connecting holes 141 on the second connector 14 via a limiting shaft 15. In a preferred embodiment, the first connectors 13 are arranged in pairs, and a second connector 14 is disposed between a pair of first connectors 13.
[0038] See Figures 3 to 5In the first scenario, when the coal seam does not require pitching, the limiting shaft 15 connects the first connecting hole 131 in the middle of the first connecting member 13 to the second connecting hole 141 on the second connecting member 14, keeping the pedal 11 horizontal. In the second scenario, when the coal seam requires pitching, in the first scenario, the pedal 11 is moved laterally, separating the first connecting hole 131 from the limiting shaft 15. The limiting shaft 15 then resides within the strip-shaped hole 132. The end of the pedal 11 with the first connecting member 13 is rotated to adjust the pitch angle of the pedal 11. After the plate 11 is level, move the pedal 11 laterally again, and the limiting shaft 15 enters the corresponding first connecting hole 131; in the third case, when the coal seam needs to be mined downwards, in the state of the first case, move the pedal 11 laterally so that the first connecting hole 131 is separated from the limiting shaft 15, and the limiting shaft 15 is located in the strip hole 132. Rotate the end of the pedal 11 that is provided with the first connecting piece 13 to adjust the pitch angle of the pedal 11. After the pedal 11 is level, move the pedal 11 laterally again, and the limiting shaft 15 enters the corresponding first connecting hole 131.
[0039] This invention compensates for the pitch angle of the hydraulic support base 2 by adjusting the pitch angle of the pedal 11, ensuring that the pedal 11 remains horizontal. This effectively prevents slips and collisions caused by large pitch angles when personnel walk on the pedestrian walkway of the hydraulic support in the up-and-down mining face, ensuring safe and smooth passage. The first connecting member 13 is provided with a first connecting hole 131 for limiting and a strip hole 132 for avoiding the limiting shaft 15. Adjusting the pitch angle of the pedal 11 does not require removing the limiting shaft 15; it can be achieved simply by moving and rotating the pedal 11 laterally. Changing the pitch angle is simple and eliminates the need to transport any parts from the surface, thus reducing the labor intensity of workers and preventing the loss of parts.
[0040] Specifically, see Figure 2 and Figure 6 The first connector 13 includes a pair of oppositely arranged and parallel ear plates, which are arc-shaped. A second connector 14, also an ear plate, is welded to the corresponding position of the foot pedal 1 on the base 2. The ear plates of the second connector 14 are installed between the pair of ear plates of the first connector 13. Both the strip hole 132 and the first connecting hole 131 are formed on the ear plates. The strip hole 132 communicates with the side wall of the first connecting hole 131, and the opening width at the communication point is greater than the outer diameter of the limiting shaft 15. The limiting shaft 15 can move from the first connecting hole 131 into the strip hole 132.
[0041] Preferably, the limiting shaft 15 includes a threaded screw and a wing nut. The screw is fitted into the first connecting hole 131 and the second connecting hole 141, and the wing nut abuts against the first connecting member 13. After adjusting the pedal 11 to be horizontal and the limiting shaft 15 is located in the corresponding first connecting hole 131, tighten the wing nut to prevent the limiting shaft 15 from disengaging from the first connecting hole 131 and increase the stability of the pedal 11.
[0042] like Figure 6 As shown, the support plate 12 is perpendicularly connected to the pedal 11, and the support plate 12 is arranged along the length of the pedal 11, increasing the stability of the pedal 11. Furthermore, the support plate 12 and the base 2 are connected in an abutting manner, ensuring that the pedal 11 can move laterally during pitch adjustment. Of course, the support plate 12 can be adjusted according to the surface structure of the base 2, and clearance notches can be cut out.
[0043] In a preferred embodiment, there are two first connectors 13 and two second connectors 14, arranged along the length of the pedal 11. The line connecting the two connectors is parallel to the support plate 12, forming a stable support structure. Furthermore, the two first connectors 13 and two second connectors 14 are symmetrically arranged on both sides of the pedal 11, so that the symmetrical pedals 1 can be used normally when the working surface direction changes.
[0044] like Figure 7 As shown, the foot pedal for the hydraulic support of the elevation and depression mining face also includes multiple anti-slip components 3. These anti-slip components 3 are arrayed on the front of the pedal 11, which is used for worker walking. The anti-slip components 3 increase the friction when the worker walks. Furthermore, each anti-slip component 3 includes an anti-slip head 31 and a connecting post 32 connected to each other. A through hole is formed in the anti-slip component 3, penetrating the anti-slip head 31 and the connecting post 32, and a bolt is fitted inside the through hole. Multiple stepped holes are formed on the pedal 11, and the connecting post 32 is fitted into these stepped holes. The bolt is threaded into the stepped holes, facilitating easy assembly and disassembly. The anti-slip head 31 is made of a flexible material, such as rubber, which provides greater comfort when the worker's feet contact it, improving the worker's experience. The top surface is curved, and the multiple arrayed anti-slip heads 31 with curved protrusions effectively increase the friction of the pedal 11. Anti-slip textures are provided on the top surface of the anti-slip head 31, further increasing the friction of the pedal 11.
[0045] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0049] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A foot pedal for a hydraulic support in an elevation and depression mining face, characterized in that, The foot pedals used for the hydraulic support of the elevation and depression mining face include: Pedal (11); Support plate (12), the support plate (12) is connected to the pedal (11), and the support plate (12) abuts against the base (2) of the hydraulic support; Multiple first connectors (13) are provided at one end of the pedal (11). The first connectors (13) are provided with a strip hole (132) and multiple first connecting holes (131) along a set arc. The multiple first connecting holes (131) are all connected to the strip hole (132). Multiple second connectors (14) are provided on the base (2) of the hydraulic support. Multiple first connectors (13) are connected to multiple second connectors (14) in a one-to-one correspondence. The second connectors (14) are provided with second connection holes (141). Multiple first connection holes (131) on the same first connector (13) can be connected to the corresponding second connection holes (141) on the second connectors (14) through a limiting shaft (15).
2. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 1, characterized in that, The first connector (13) includes a pair of opposing ear plates, the ear plates being arc-shaped, and the strip hole (132) and the first connecting hole (131) are both formed on the ear plates.
3. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 2, characterized in that, The strip hole (132) communicates with the side wall of the first connecting hole (131), and the opening width at the communication point is greater than the outer diameter of the limiting shaft (15). The limiting shaft (15) can move from the first connecting hole (131) into the strip hole (132).
4. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 1, characterized in that, The limiting shaft (15) includes a threaded screw and a wing nut. The screw is sleeved in the first connecting hole (131) and the second connecting hole (141), and the wing nut abuts against the first connecting member (13).
5. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 1, characterized in that, The support plate (12) is perpendicularly connected to the pedal (11), and the support plate (12) is arranged along the length direction of the pedal (11).
6. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 5, characterized in that, The number of the first connector (13) and the second connector (14) is two, and they are arranged along the length direction of the pedal (11).
7. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 1, characterized in that, The foot pedal for the hydraulic support of the elevation and depression mining face also includes multiple anti-slip components (3), and the multiple anti-slip components (3) are arranged in an array on the pedal (11).
8. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 7, characterized in that, The anti-slip component (3) includes an anti-slip head (31) and a connecting post (32) connected to each other. The anti-slip component (3) has a through hole that passes through the anti-slip head (31) and the connecting post (32). A bolt is fitted inside the through hole. The pedal (11) has multiple stepped holes, the connecting post (32) is fitted into the stepped holes, and the bolt is threaded into the stepped holes.
9. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 8, characterized in that, The anti-slip head (31) is made of flexible material and has a curved top surface.
10. The foot pedal for a hydraulic support in an elevation and depression mining face as described in claim 8, characterized in that, The top surface of the anti-slip head (31) is provided with anti-slip texture.