Hydraulic support tail beam waste rock blocking device

Abstract

The invention relates to the technical field of hydraulic supports, in particular to a hydraulic support tail beam waste rock blocking device which comprises a top plate, main rib plates, a bottom plate, a hook mounting plate and hooks, the top plate is arranged at the tops of the main rib plates, and the bottom plate is located between the main rib plates; the hook mounting plates are symmetrically arranged at two ends of the top plate; the hook mounting plate is detachably connected with the hook; the hook is hung on the edge of the side wall of the tail beam; the bottom plate is detachably connected with the hoisting hole in the side wall of the tail beam. The bottom plate and the hook can effectively ensure that the waste rock blocking device is fixed on the tail beam; the symmetrical design of the hook mounting plates can adapt to movable working faces on the two sides of the tail beam, and compatibility is achieved; the structural strength is improved through the design of the reinforcing ribs, the weight of structural parts is effectively reduced through the design of the lightening holes, installation and maintenance are convenient, and the problems that in underground production, the space between the adjacent tail beams of the hydraulic support cannot be closed, and waste rock leakage is serious are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic supports, and in particular to a tail beam rock retaining device for a hydraulic support. Background Art

[0002] Hydraulic supports have been widely used in coal mining. In the mining process, the main function of hydraulic supports is to support and fix infrastructure such as mines and mine tunnels to ensure safety and stability during the mining process.

[0003] A hydraulic support generally includes a top beam, a shield beam and a tail beam. The top beam and the shield beam are equipped with movable side guard plates. When the hydraulic support is in use, the movable side guard plates of the top beam and the shield beam pop out to close the gap between the frames and play a role in retaining gangue.

[0004] However, in general, the tail beam of the hydraulic support is not equipped with a rock retaining device, and there will be a gap between the tail beams of adjacent supports during use. There is no installation hole designed on the tail beam of the hydraulic support, and there are only hoisting holes on the side wall of the tail beam for hoisting operations. Therefore, ordinary rock retaining plates cannot be installed on the tail beam. Summary of the invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the present application provides a hydraulic support tail beam rock retaining device, the base plate can be installed in the lifting hole of the tail beam side wall by using bolts, nuts and gaskets, and the hook hung on the edge of the tail beam side wall can effectively ensure that the rock retaining device is fixed on the tail beam; the symmetrical design of the hook mounting plate can adapt to the movable working surfaces on both sides of the tail beam, and can be installed on one side of the tail beam according to needs, and can also be quickly replaced and installed on the other side, with compatibility; the design of the reinforcement ribs improves the structural strength, and the design of the weight-reducing holes effectively reduces the weight of the structural parts, which is easy to install and maintain, and effectively solves the problem that the space between adjacent tail beams of the hydraulic support in underground production cannot be closed and the rock leakage is serious, thereby improving the support quality of the hydraulic support.

[0007] According to an embodiment of the present application, a hydraulic support tail beam rock retaining device is provided, comprising: a top plate, a main rib plate, a bottom plate, a hook mounting plate and a hook, wherein the number of the main rib plates is at least 2, the top plate is arranged on the top of the main rib plate, and the bottom plate is arranged on the bottom of the main rib plate; the number of the hook mounting plates is at least 2, the hook mounting plates are symmetrically arranged at both ends of the top plate, and the hook mounting plates are respectively fixedly connected to the main rib plates; the hook mounting plate is detachably connected to the hook; the hook is hung on the edge of the tail beam side wall; the bottom plate is detachably connected to the lifting hole of the tail beam side wall.

[0008] Optionally, the hook mounting plate includes: a horizontal portion and an inclined portion, the horizontal portion is fixedly connected to the top plate, and the inclined portion is arranged below the horizontal portion; the horizontal portion and the inclined portion are respectively used for detachable connection with the hook; and an operating notch is provided between the horizontal portion and the inclined portion.

[0009] Optionally, an operating spacing is provided between the hook mounting plate and the side wall of the tail beam, and the operating spacing is used to reserve operating space for the operating notch.

[0010] Optionally, the operating spacing is 20-60mm.

[0011] Optionally, a triangular rib plate is provided below the top plate.

[0012] Optionally, a first reinforcing rib plate is provided above the bottom plate; a second reinforcing rib plate is provided on one side of the main rib plate close to the bottom plate; and a third reinforcing rib plate is provided below the top plate.

[0013] Optionally, the first reinforcing rib plate, the second reinforcing rib plate and the top plate form an I-shaped structure.

[0014] Optionally, the first reinforcing rib plate, the second reinforcing rib plate and the third reinforcing rib plate are respectively provided with reinforcing rib weight-reducing holes.

[0015] Optionally, a sleeve is provided on the bottom plate, and the sleeve is used to be placed in the lifting hole of the side wall of the tail beam. The bottom plate is detachably connected to the lifting hole of the side wall of the tail beam by using bolts, nuts and gaskets through the sleeve.

[0016] Optionally, bottom plate weight reduction holes are provided on the bottom plate.

[0017] One of the above technical solutions has at least the following advantages or beneficial effects:

[0018] The present application provides a hydraulic support tail beam rock retaining device, comprising: a top plate, a main rib plate, a bottom plate, a hook mounting plate and a hook, wherein the number of the main rib plates is at least 2, the top plate is arranged on the top of the main rib plate, and the bottom plate is arranged on the bottom of the main rib plate; the number of the hook mounting plates is at least 2, the hook mounting plates are symmetrically arranged at both ends of the top plate, and the hook mounting plates are respectively fixedly connected to the main rib plates; the hook mounting plate is detachably connected to the hook; the hook is hung on the edge of the tail beam side wall; the bottom plate is detachably connected to the lifting hole of the tail beam side wall. The base plate can be installed into the lifting holes of the side wall of the tail beam by using bolts, nuts and washers. The hook hung on the edge of the side wall of the tail beam can effectively ensure that the rock retaining device is fixed on the tail beam; the symmetrical design of the hook mounting plate can adapt to the movable working surfaces on both sides of the tail beam. It can be installed on one side of the tail beam according to needs, and can also be quickly replaced and installed on the other side, which is compatible; the design of the reinforcement ribs improves the structural strength, and the design of the weight-reducing holes effectively reduces the weight of the structural parts, which is easy to install and maintain, and effectively solves the problem of the space between adjacent tail beams of the hydraulic support in underground production cannot be closed and the rock leakage is serious, thereby improving the support quality of the hydraulic support. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 One of the structural schematic diagrams of a tail beam rock retaining device of a hydraulic support provided in an embodiment of the present application is shown;

[0021] Figure 2 The second structural schematic diagram of a tail beam rock retaining device of a hydraulic support provided in an embodiment of the present application is shown;

[0022] Figure 3 The third structural schematic diagram of a tail beam rock retaining device of a hydraulic support provided in an embodiment of the present application is shown;

[0023] Figure 4 Shows Figure 1 Sectional view along the AA plane;

[0024] Figure 5 A schematic diagram of a hydraulic support tail beam rock retaining device provided in an embodiment of the present application during operation is shown;

[0025] Figure 6 A schematic diagram showing the gap between the tail beams of the hydraulic support.

[0026] [Description of Reference Numerals]

[0027] 1. Top plate, 11. Triangular rib plate, 2. Main rib plate, 21. First reinforcing rib plate, 22. Second reinforcing rib plate, 23. Third reinforcing rib plate, 24. Reinforcing rib weight-reducing hole, 3. Bottom plate, 31. Sleeve, 32. Bottom plate weight-reducing hole, 4. Hook mounting plate, 41. Horizontal part, 42. Inclined part, 43. Operating notch, 5. Hook, 6. Tail beam side wall, 7. Gap. DETAILED DESCRIPTION

[0028] In order to better explain the present application and facilitate understanding, the present application is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Figure 1 and Figure 2 The orientation of is used as a reference. The position of the top plate 1 relative to the bottom plate 3 is defined as "upper"; the position of the second reinforcing rib plate 22 relative to the main rib plate 2 is defined as "inner".

[0029] As mentioned above, the mine tunnels in coal mines are an important part of the mining system, with unique structures and functions. Mine tunnels are often characterized by narrow and long spaces, complex structures, and difficult maintenance. Because they are located deep underground and are long-term affected by natural factors such as geological changes and groundwater erosion, they need to be supported and reinforced to ensure the integrity of their structures and smooth ventilation.

[0030] A hydraulic support is a support structure set up in a mine tunnel and controlled and operated by a hydraulic system. It uses the hydraulic principle and provides power through a hydraulic pump station to make the top beam of the support closely contact with the tunnel roof, thereby supporting and protecting the tunnel. During the coal mining process, as the working face advances, the roof of the mine tunnel may be affected by the mine pressure and sink or fall. At this time, the hydraulic support can play its supporting and protective role to ensure the stability and safety of the tunnel and avoid roof falls and spalling. Roof fall refers to the phenomenon that during the mining process, the roof rock strata undergo different degrees of deformation and damage due to the activity of mining pressure, resulting in rock fracture and collapse. Roof fall may occur when the roof is improperly protected, the support quality is poor, or the mining pressure continues to increase and exceeds the elastic deformation limit of the rock. Spalling is caused by the suspension in the roof rock strata of the goaf, the pressure is transferred to the coal wall, and under the action of additional loads, part of the coal on the coal wall is crushed and squeezed into the goaf. The supporting pressure in front of the working face is the main cause of coal wall spalling.

[0031] Hydraulic supports generally include top beams, shield beams and tail beams. The top beams and shield beams are equipped with movable side guards. When the hydraulic supports are in use, the movable side guards of the top beams and shield beams pop out to close the gaps between the frames and play a role in blocking the gangue. However, in general, the tail beams of hydraulic supports are not equipped with gangue blocking devices. During use, if Figure 6As shown in the middle shaded area, there will be a gap 7 between the tail beams of adjacent supports, and the gap 7 is about 100-200mm; moreover, when the support is tilted forward and backward, the gap will be larger, and the gangue on the tail beam will leak through the gap of the tail beam to the rear conveyor of the support, which will affect the coal quality. Especially in the working face with soft roof or large horizontal inclination, the gangue leakage will be more serious, and even a large amount of gangue will accumulate on the rear conveyor, causing the conveyor to stop operating.

[0032] However, there are no installation holes designed on the tail beam of the hydraulic support, and there are only hoisting holes for hoisting operations on the side walls of the tail beam. Therefore, ordinary rock retaining plates cannot be installed on the tail beam.

[0033] In order to solve at least one of the technical problems existing in the prior art or related technology, the present application provides a hydraulic support tail beam gangue blocking device, including: a top plate, a main rib plate, a bottom plate, a hook mounting plate and a hook, wherein the number of the main rib plates is at least 2, the top plate is arranged on the top of the main rib plate, and the bottom plate is arranged on the bottom of the main rib plate; the number of the hook mounting plates is at least 2, the hook mounting plates are symmetrically arranged at both ends of the top plate, and the hook mounting plates are respectively fixedly connected to the main rib plates; the hook mounting plate is detachably connected to the hook; the hook is hung on the edge of the tail beam side wall; the bottom plate is detachably connected to the lifting hole of the tail beam side wall. The base plate can be installed into the lifting holes of the side wall of the tail beam by using bolts, nuts and washers. The hook hung on the edge of the side wall of the tail beam can effectively ensure that the rock retaining device is fixed on the tail beam; the symmetrical design of the hook mounting plate can adapt to the movable working surfaces on both sides of the tail beam. It can be installed on one side of the tail beam according to needs, and can also be quickly replaced and installed on the other side, which is compatible; the design of the reinforcement ribs improves the structural strength, and the design of the weight-reducing holes effectively reduces the weight of the structural parts, which is easy to install and maintain, and effectively solves the problem of the space between adjacent tail beams of the hydraulic support in underground production cannot be closed and the rock leakage is serious, thereby improving the support quality of the hydraulic support.

[0034] The following describes a hydraulic support tail beam rock retaining device according to some embodiments provided by the present application with reference to the accompanying drawings.

[0035] See also Figures 1 to 6 A hydraulic support tail beam gangue retaining device provided in an embodiment of the present application comprises: a top plate 1, a main rib plate 2, a bottom plate 3, a hook mounting plate 4 and a hook 5, wherein the number of the main rib plates 2 is at least 2, the top plate 1 is arranged on the top of the main rib plate 2, and the bottom plate 3 is arranged at the bottom of the main rib plate 2; the number of the hook mounting plates 4 is at least 2, the hook mounting plates 4 are symmetrically arranged at both ends of the top plate 1, and the hook mounting plates 4 are respectively fixedly connected to the main rib plates 2; the hook mounting plate 4 is detachably connected to the hook 5; the hook 5 is hung on the edge of the tail beam side wall 6; the bottom plate 3 is detachably connected to the lifting hole of the tail beam side wall 6.

[0036] The top plate 1 is used for supporting and protecting, and its width can be designed to be 100mm-200mm, so that the gap 7 between the adjacent bracket tail beams can be filled. The main rib plate 2 is a key supporting component in the structure, which bears the vertical and horizontal loads from the top plate 1 and other components. The use of at least two main rib plates 2 to provide support is to enable the top plate 1 to distribute the force more evenly to more than two supporting points, thereby avoiding the situation where a single point is subjected to excessive force. This dispersed load distribution helps to enhance the strength of the entire structure, allowing the top plate 1 to withstand greater loads and impact forces. The bottom plate 3 is detachably connected to the lifting holes of the tail beam side wall 6, which plays a supporting and fixing role. Generally, the detachable connection can be achieved by combining bolts, nuts and gaskets.

[0037] like Figure 3 As shown, the hook mounting plate 4 is arranged below the top plate 1 in order to fix the top plate 1 with the hook 5. This is because there are only hoisting holes for hoisting on the side wall 6 of the tail beam, and the hoisting holes are located at the bottom plate 3, and the top plate 1 cannot be fixed with bolts on the top layer. The hook mounting plate 4 is symmetrically arranged in order to adapt to the active working surfaces on both sides of the tail beam, such as Figure 5 As shown, it can be installed on one side of the tail beam according to the needs, and can also be quickly replaced and installed on the other side, which has compatibility. The hook mounting plate 4 and the hook 5 can be detachably connected by bolts and nuts.

[0038] Furthermore, the hook mounting plate 4 and the hook 5 are detachably connected by 4 sets of bolts and nuts, and the 4 sets of bolts and nuts are arranged in an array. This design can ensure that the force at the connection is more uniform. Compared with a single point or a small number of connection points, the 4-point array distribution can effectively avoid the problem of local stress concentration caused by excessive force on a single point, thereby enhancing the stability and reliability of the overall structure.

[0039] In an illustrative embodiment, Figure 2 As shown, the hook mounting plate 4 includes: a horizontal portion 41 and an inclined portion 42, the horizontal portion 41 is fixedly connected to the top plate 1, and the inclined portion 42 is arranged below the horizontal portion 41; the horizontal portion 41 and the inclined portion 42 are respectively used for detachable connection with the hook 5; an operating notch 43 is provided between the horizontal portion 41 and the inclined portion 42.

[0040] The horizontal portion 41 is designed to adapt to the edge of the tail beam side wall 6 near the top, and the inclined portion 42 is designed to adapt to the edge of the tail beam side wall 6 at the inclination. This design allows the hook 5 to be hung on the edge of the tail beam side wall 6 near the top, and can also be hung on the edge of the tail beam side wall 6 at the inclination, which can better adapt to the edge of the tail beam side wall 6 and has compatibility.

[0041] The operation notch 43 is for the convenience of installing the hook 5. The hook 5 can be installed on the horizontal portion 41 or on the inclined portion 42. The operation notch 43 is arranged between the horizontal portion 41 and the inclined portion 42, and can leave an operating space for the operator to manually install the hook 5.

[0042] In an illustrative embodiment, an operating spacing is provided between the hook mounting plate 4 and the tail beam side wall 6, and the operating spacing is used to leave an operating space for the operating notch 43. The hook 5 can be installed by means of bolts and nuts. Considering the size of the bolts and nuts, the size of the installation tools, and the operating habits of the operator, a sufficient operating spacing needs to be reserved when installing the bolts and nuts.

[0043] In an illustrative embodiment, the operation spacing is 20-60 mm. Considering the range of movement of the operator during operation, it is reasonable to set the operation spacing at 20-60 mm to ensure that there is enough space for movement and operation. If the operation spacing is less than 20 mm, the operation space is too small, and the operator will be very inconvenient during installation; if the operation spacing is greater than 60 mm, the hook 5 needs to be designed to be too large, which will cause unnecessary waste.

[0044] In an illustrative embodiment, Figure 2 As shown, a triangular rib plate 11 is provided under the top plate 1. The triangular rib plate 11 can serve as an additional supporting structure to help the top plate 1 bear the load from above and transfer it to the components below, so that the top plate 1 is not easily deformed or damaged when bearing heavy loads; the triangular rib plate 11 can also optimize the stress state of the top plate 1, reduce adverse factors such as stress concentration and crack generation, and can improve the service life and durability of the top plate 1.

[0045] In an exemplary embodiment, a first reinforcing rib plate 21 is provided above the bottom plate 3; a second reinforcing rib plate 22 is provided on one side of the main rib plate 2 close to the bottom plate 3; and a third reinforcing rib plate 23 is provided below the top plate 1. The first reinforcing rib plate 21, the second reinforcing rib plate 22 and the third reinforcing rib plate 23 can help the main structure resist deformation through their own high rigidity characteristics, thereby improving the rigidity of the entire structure.

[0046] In an illustrative embodiment, Figure 4 As shown, the first reinforcing rib plate 21, the second reinforcing rib plate 22 and the top plate 1 form an I-shaped structure. The I-shaped structure can increase the moment of inertia of the structure, thereby improving the bending and shear resistance of the structure. When the top plate 1 is subjected to a heavy load, the first reinforcing rib plate 21 and the second reinforcing rib plate 22 can share more loads, reduce the stress on the main structure, and thus improve the bearing capacity of the entire structure.

[0047] In an exemplary embodiment, the first reinforcing rib plate 21, the second reinforcing rib plate 22 and the third reinforcing rib plate 23 are respectively provided with reinforcing rib weight-reducing holes 24. The reinforcing rib weight-reducing holes 24 reduce the weight of the parts by removing the material in the low stress area, which can reduce the cost and facilitate transportation and installation.

[0048] In an illustrative embodiment, Figure 4 As shown, a sleeve 31 is provided on the base plate 3, and the sleeve 31 is used to be placed in the hanging hole of the tail beam side wall 6. The base plate 3 and the hanging hole of the tail beam side wall 6 are detachably connected through the sleeve 31 using bolts, nuts and washers.

[0049] The sleeve 31 can play a positioning role. Put the sleeve 31 into the lifting hole of the tail beam side wall 6, insert the bolt into the sleeve 31 from the front, install the gasket on the back, and then use the nut to lock it. It is convenient for operators to install the bolts, nuts and gaskets. The sleeve 31 can effectively protect the bolts from erosion and damage from the external environment. For example, the environment in the mine is prone to humidity and corrosion. The use of the sleeve 31 can isolate the bolts from the external environment, thereby reducing the impact of these adverse factors on the bolts and extending their service life. In addition, the sleeve 31 can bear the load, such as Figure 5 As shown, when the top plate 1 is subjected to load, the main stress will be borne by the bolts. At this time, the sleeve 31 can disperse most of the load to its own structure, which can reduce the stress directly borne by the bolts, thereby improving the service life and reliability of the bolts.

[0050] In an illustrative embodiment, the bottom plate 3 is provided with bottom plate weight-reducing holes 32. The bottom plate weight-reducing holes 32 reduce the weight of the parts by removing the material in the low stress area, which can reduce the cost and facilitate transportation and installation.

[0051] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the feature. In the description of the present application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0052] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the present application, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0055] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A tail beam rock blocking device for a hydraulic support, characterized in that: include: A top plate (1), a main rib plate (2), a bottom plate (3), a hook mounting plate (4) and a hook (5), wherein: The number of the main rib plates (2) is at least two, the top plate (1) is arranged on the top of the main rib plate (2), and the bottom plate (3) is arranged on the bottom of the main rib plate (2); The number of the hook mounting plates (4) is at least two, and the hook mounting plates (4) are symmetrically arranged at both ends of the top plate (1), and the hook mounting plates (4) are respectively fixedly connected to the main rib plate (2); The hook mounting plate (4) is detachably connected to the hook (5); The hook (5) is hung on the edge of the tail beam side wall (6); The bottom plate (3) is detachably connected to the lifting hole of the tail beam side wall (6).

2. A tail beam rock retaining device for a hydraulic support as claimed in claim 1, characterized in that: The hook mounting plate (4) comprises a horizontal portion (41) and an inclined portion (42). The horizontal portion (41) is fixedly connected to the top plate (1), and the inclined portion (42) is arranged below the horizontal portion (41); The horizontal portion (41) and the inclined portion (42) are respectively used to be detachably connected to the hook (5); An operating notch (43) is provided between the horizontal portion (41) and the inclined portion (42).

3. A tail beam rock retaining device for a hydraulic support as claimed in claim 2, characterized in that: An operating distance is provided between the hook mounting plate (4) and the tail beam side wall (6), and the operating distance is used to reserve an operating space for the operating notch (43).

4. A tail beam rock retaining device for a hydraulic support as claimed in claim 3, characterized in that: The operating spacing is 20-60 mm.

5. The tail beam rock retaining device of a hydraulic support as claimed in claim 1, characterized in that: A triangular rib plate (11) is provided below the top plate (1).

6. The tail beam rock retaining device of a hydraulic support as claimed in claim 1, characterized in that: A first reinforcing rib plate (21) is provided above the bottom plate (3); a second reinforcing rib plate (22) is provided on one side of the main rib plate (2) close to the bottom plate (3); and a third reinforcing rib plate (23) is provided below the top plate (1).

7. A tail beam rock retaining device for a hydraulic support as claimed in claim 6, characterized in that: The first reinforcing rib plate (21), the second reinforcing rib plate (22) and the top plate (1) form an I-shaped structure.

8. The tail beam rock retaining device of a hydraulic support as claimed in claim 6, characterized in that: The first reinforcing rib plate (21), the second reinforcing rib plate (22) and the third reinforcing rib plate (23) are respectively provided with reinforcing rib weight-reducing holes (24).

9. The tail beam rock retaining device of a hydraulic support as claimed in claim 1, characterized in that: The base plate (3) is provided with a sleeve (31), and the sleeve (31) is used to be placed in the lifting hole of the tail beam side wall (6). The base plate (3) and the lifting hole of the tail beam side wall (6) are detachably connected through the sleeve (31) using bolts, nuts and washers.

10. The tail beam rock retaining device of a hydraulic support as claimed in claim 1, characterized in that: The bottom plate (3) is provided with bottom plate weight-reducing holes (32).

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