Buffering energy-absorbing hydraulic support base

Abstract

The present application relates to roadway anti-bump supporting technical field, and relates to a buffer energy-absorbing type hydraulic support base, which comprises a hydraulic support and an energy-absorbing base, the support base is arranged above the energy-absorbing base, an energy absorber device is arranged in the energy-absorbing base, the support base is in contact with the energy absorber device for support in normal support, a base shell is arranged around the support base; the energy absorber device is arranged in a device box, a lifting oil cylinder is arranged on the side of the device box in the base shell, a downward protruding pressure bearing plate is arranged above the support base, the pressure bearing plate is in direct contact with the energy absorber device for support; the present application not only meets the anti-bump performance required by rock burst, but also the energy absorber installed in the present application can be replaced in time compared with the traditional anti-bump column hydraulic support; the present application is convenient and fast, reduces the labor cost, and can be used in cooperation with the frame type of the hydraulic support used in different coal mines, has strong adaptability and wide application range.

Description

Technical Field

[0001] This invention relates to the field of tunnel anti-scour support technology, and more specifically, to a buffer-type energy-absorbing hydraulic support base. Background Technology

[0002] Hydraulic supports are crucial support equipment in coal mining. The roof of the longwall face acts directly on the top beams of the hydraulic supports as an external load. Hydraulic supports must provide safe and reliable support to the roof of the working face, preventing rocks from falling into the working face due to roof collapse, and acting as a barrier to isolate the goaf. When used in conjunction with the coal mining machine, they can perform a complete set of lifting, pushing, lowering, and moving operations, improving the production efficiency of the coal mining machine, reducing the workload of workers, and ensuring worker safety to the greatest extent possible. However, with the increasing depth of mineral resource mining, the frequency and severity of rockbursts are becoming increasingly severe, often leading to the overall instability of the roadway support structure, overturning and damage of machinery and equipment, and even casualties, seriously affecting the safe production of coal mines. Because rockbursts release enormous elastic energy in an instant, and the time from the occurrence of the impact load to its complete release is often only a few milliseconds to tens of milliseconds, the pressure relief safety valve, under the influence of mechanical conditions, sometimes cannot open in time during such a short dynamic response period, or its instantaneous pressure relief capacity after opening cannot meet the demand. This can lead to phenomena such as hydraulic columns bending, breaking, and cylinder bursting under pressure, affecting the normal support of the roadway. The subsequent maintenance of hydraulic columns is labor-intensive, the repair cost is high, and the operation cycle for restoring normal roadway support is long.

[0003] Meanwhile, some existing anti-impact supports have hydraulic column structures with energy absorbers at the bottom of the telescopic piston column. Although these structures have a certain buffering and energy absorption effect, the energy absorbers are complex, costly to manufacture, and difficult to replace. Often, the entire hydraulic column needs to be replaced to replace the energy absorber, resulting in a waste of resources. Therefore, it is necessary to improve the energy absorber device in the existing hydraulic supports. Summary of the Invention

[0004] The present invention provides a buffer-absorbing hydraulic support base that overcomes some or all of the defects of the prior art.

[0005] According to the present invention, a buffer energy-absorbing hydraulic support base includes a hydraulic support and an energy-absorbing base. A support base is provided below the hydraulic support, and the support base is disposed above the energy-absorbing base. An energy absorber device is provided inside the energy-absorbing base. During normal support, the support base contacts and supports the energy absorber device. A base shell is provided around the support base.

[0006] The energy absorber device is housed in a device box, which is an open-top box. A sliding groove is provided on the base shell for the device box to slide and be inserted / removed. A lifting cylinder is provided on the side of the device box inside the base shell. The support base is located above the energy absorber device and has a downwardly protruding pressure plate. The pressure plate directly contacts and supports the energy absorber device.

[0007] Preferably, a lifting cylinder is provided on both the left and right sides of the device box inside the base housing.

[0008] Preferably, multiple stiffening plates are provided between the pressure plate and the support base.

[0009] Preferably, guide columns are fixed on both sides of the support base, and vertical sliding grooves for installing guide columns are opened at corresponding positions on the base shell, so as to provide stable guidance for the support base to be lifted when the lifting cylinder lifts the hydraulic support.

[0010] Preferably, the height of the lifting cylinder is lower than the height of the support base from the bottom surface of the base housing when the energy absorber device is completely crushed.

[0011] Preferably, a handle is provided on the outside of the device box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The energy-absorbing buffer type hydraulic support base device designed in this invention not only meets the anti-impact performance requirements of rock bursts, but also allows for timely replacement of the energy absorber compared to traditional anti-impact column hydraulic supports. It is convenient and quick to use, reducing labor costs, and can be used in conjunction with different types of hydraulic supports used in various coal mines, demonstrating strong adaptability and a wide range of applications. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall anti-impact hydraulic support in the embodiment;

[0015] Figure 2 Top view of the energy-absorbing base;

[0016] Figure 3 for Figure 2 Schematic diagram of sectioning along line A.

[0017] in:

[0018] 1. Hydraulic support; 101. Support base; 102. Guide column; 103. Rib plate; 104. Pressure plate; 2. Energy-absorbing base; 201. Base shell; 202. Device box; 203. Lifting cylinder; 204. Energy absorber device. Detailed Implementation

[0019] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0020] Example 1

[0021] like Figures 1-3 As shown, a buffer energy-absorbing hydraulic support base includes a hydraulic support 1 and an energy-absorbing base 2. A support base 101 is provided below the hydraulic support 1 and is positioned above the energy-absorbing base 2. An energy absorber device 204 is provided inside the energy-absorbing base 2. During normal support, the support base 101 contacts and supports the energy absorber device 204. A base shell 201 is provided around the support base 101.

[0022] The energy absorber device 204 is housed within the device box 202, which is an open-top box. A sliding groove is provided on the base housing 201, allowing the device box 202 to slide and be inserted / removed within it. A lifting cylinder 203 is located on the side of the device box 202 within the base housing 201. A downwardly protruding pressure plate 104 is located above the energy absorber device 204 on the support base 101. The pressure plate 104 directly contacts and supports the energy absorber device 204. With this configuration, under normal support conditions, the energy absorber device 204 provides sufficient support for the entire support structure. When an impact pressure event occurs, the energy absorber device 204 will generate energy absorption by yielding. When it is necessary to replace the energy absorber device 204, the lifting cylinder 203 is activated to lift the entire hydraulic support 1. Then, the device box 202 is removed from the base housing 201, allowing for easy replacement of the energy absorber device 204.

[0023] To further improve the performance of the present invention, a lifting cylinder 203 is provided on both the left and right sides of the device box 202 inside the base shell 201. The two lifting cylinders 203 together support the hydraulic support 1, making it more stable.

[0024] Multiple stiffening plates 103 are provided between the pressure plate 104 and the support base 101 to enhance the load-bearing strength.

[0025] Guide columns 102 are fixed on both sides of the support base 101. Vertical sliding grooves for installing guide columns 102 are opened at corresponding positions on the base shell 201. When the lifting cylinder 203 lifts the hydraulic support 1, it provides stable guidance for lifting the support base 101.

[0026] The height of the lifting cylinder 203 is lower than the height of the support base 101 from the bottom surface of the base housing 201 when the energy absorber device 204 is completely crushed. When the support base 101 moves downward until it completely crushes the energy absorber device 204, that is, when the maximum compression is reached, the support base 101 does not contact the piston rod of the fully retracted lifting cylinder 203, thus avoiding the lifting cylinder 203 from bearing the impact load.

[0027] A handle is provided on the outside of the device box 202 to facilitate the removal of the device box 202 for replacement of the energy absorber device 204.

[0028] Working principle or usage process:

[0029] The main function of the device box 202 is to fix the energy absorber device 204; the function of the lifting cylinder 203 is to lift the support base 101, allowing the device box 202 to be pulled out and inserted back in. By lifting the support base 101 upwards with the lifting cylinder 203, the device box 202 is pulled out, the energy absorber device 204 is placed into the device box 202, and after the device box 202 is inserted back into the base housing 201, the lifting cylinder 203 is unloaded, and the support base 101 is lowered onto the energy absorber device 204. When a shock load occurs, the support base 101 will move downwards and crush the energy absorber device 204. At the maximum compression, the support base 101 and the piston rod of the lifting cylinder 203 will not contact each other, preventing the lifting cylinder 203 from bearing the impact load. The support base 101 is lifted by the lifting cylinder 203, and the device box 202 is pulled out. The energy absorber device 204 inside is crushed at this time. Replace the new energy absorber device 204, insert the device box 202 back into the base shell 201, unload the lifting cylinder 203 and lower the support base 101 onto the energy absorber device 204, thus completing the replacement.

[0030] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A buffer-type energy-absorbing hydraulic support base, comprising a hydraulic support (1) and an energy-absorbing base (2), wherein a support base (101) is provided below the hydraulic support (1), the support base (101) is disposed above the energy-absorbing base (2), an energy absorber device (204) is provided inside the energy-absorbing base (2), and during normal support, the support base (101) contacts and supports the energy absorber device (204), and a base shell (201) is provided around the support base (101); Its features are: The energy absorber device (204) is housed in the device box (202), which is an open-top box. A sliding groove is provided on the base shell (201) for the device box (202) to slide and slide in. A lifting cylinder (203) is provided on the side of the device box (202) inside the base shell (201). The support base (101) is located above the energy absorber device (204) and has a downwardly protruding pressure plate (104). The pressure plate (104) directly contacts and supports the energy absorber device (204). Specifically, guide posts (102) are fixed on both sides of the bracket base (101), and vertical sliding grooves for installing guide posts (102) are opened at corresponding positions on the base shell (201). When the lifting cylinder (203) lifts the hydraulic bracket (1), it provides a stable guide for lifting the bracket base (101). A lifting cylinder (203) is provided on both the left and right sides of the device box (202) inside the base housing (201).

2. The buffer-type energy-absorbing hydraulic support base according to claim 1, characterized in that: Multiple stiffeners (103) are provided between the pressure plate (104) and the support base (101).

3. The buffer-type energy-absorbing hydraulic support base according to claim 1, characterized in that: The height of the lifting cylinder (203) is lower than the height of the support base (101) from the bottom surface of the base shell (201) when the energy absorber device (204) is completely crushed.

4. The buffer-type energy-absorbing hydraulic support base according to claim 1, characterized in that: A handle is provided on the outside of the device box (202).

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