Internal liquid inlet type push rod for hydraulic support

Abstract

The utility model provides an internal liquid inlet type push rod for a hydraulic support, which belongs to the technical field of hydraulic supports and comprises a hydraulic oil pipe, a lifting groove and a hydraulic cylinder at the bottom of the lifting groove, a hydraulic push rod is arranged above the hydraulic cylinder, one end of the hydraulic oil pipe is provided with a connecting valve, the other end of the hydraulic oil pipe is provided with a first connector, and the connecting valve is connected with the hydraulic cylinder. An oil storage bin is arranged on the side face of the first connector, a plurality of oil supply pipelines are arranged on one side of the oil storage bin, and an oil supply device is arranged on one side of each oil supply pipeline. One end of the hydraulic oil pipe is connected with the hydraulic cylinder through the connecting valve, the other end of the hydraulic oil pipe is communicated with the oil storage bin through the first connector, when oil leakage occurs, the oil supply device is closed, then the connecting valve is closed, oil supply of the hydraulic cylinder is blocked, and then the first connector is detached for maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to an internal liquid inlet type push rod for a hydraulic support. Background Technique

[0002] A hydraulic support is a structure used to control the mine pressure in a coal mining face. It is an important device used in mines or mining operations. Its main function is to support and stabilize the roof of the mine roadway to prevent the roof from collapsing and accidents from occurring. When the coal mining face moves, the hydraulic support can automatically adjust, lift, and lock to adapt to the height and angle changes of the roadway, maintaining the stability and safety of the coal mine face. It has the characteristics of automatic control and high adjustability, can improve the safety and efficiency of coal mining, reduce labor intensity, and have a positive impact on the environment.

[0003] Most of the existing mine-used hydraulic supports need to be connected to the roof through a hydraulic push rod, and the height of the roof on the hydraulic support is controlled by driving the lifting of the hydraulic push rod through a hydraulic cylinder. However, most of the existing hydraulic cylinders supply hydraulic oil directly to the hydraulic cylinder through a hydraulic oil pipe. When the hydraulic oil pipe leaks during the liquid supply to the hydraulic cylinder, it is not convenient for maintenance, which in turn affects the work progress. To solve the above problems, an internal liquid inlet type push rod for a hydraulic support is proposed to solve the above problems. Content of the Utility Model

[0004] In view of this, the utility model provides an internal liquid inlet type push rod for a hydraulic support. The utility model can supply liquid to the oil storage tank through the oil supply pipeline by starting the oil supply device, and then supply liquid to the hydraulic cylinder and the hydraulic oil pipe through the oil storage tank. One end of the hydraulic oil pipe is connected to the hydraulic cylinder through a connection valve, and the other end of the hydraulic oil pipe is connected to the oil storage tank through a first connector. When an oil leakage occurs, the oil supply device is closed, and then the connection valve is closed, thereby blocking the oil supply to the hydraulic cylinder, and the first connector is disassembled for maintenance.

[0005] To solve the above technical problems, the utility model provides an internal liquid inlet type push rod for a hydraulic support, which includes a hydraulic oil pipe, a lifting groove, and a hydraulic cylinder at the bottom of the lifting groove. A hydraulic push rod is arranged above the hydraulic cylinder. One end of the hydraulic oil pipe is provided with a connection valve, and the other end of the hydraulic oil pipe is provided with a first connector. The connection valve is connected to the hydraulic cylinder. A side of the first connector is provided with an oil storage tank, and a plurality of oil supply pipelines are arranged on one side of the oil storage tank. An oil supply device is arranged on one side of the oil supply pipelines.

[0006] A sealing connector for connecting the hydraulic push rod to the hydraulic cylinder is arranged at the lower end of the hydraulic push rod, and the lower end of the sealing connector is connected to the hydraulic cylinder.

[0007] A protective sleeve for protecting the hydraulic push rod is arranged on the surface of the hydraulic push rod.

[0008] The upper end of the hydraulic push rod is provided with a hydraulic connector for connecting the hydraulic push rod to the push connection mechanism, and the upper end of the hydraulic connector is provided with a push connection mechanism for connecting the hydraulic connector to an external device.

[0009] On the other side of the oil storage tank, there is a cushion block for stabilizing the oil storage tank. One side of the cushion block is provided with a positioning groove for installing the oil storage tank, and the positioning groove corresponds to one side of the oil storage tank. The cushion block is fixed to the inner wall of the lifting groove.

[0010] One side of the lifting groove is provided with several connection ports for installing the oil supply pipeline. Inside the connection ports, there is an oil supply pipeline for connecting the oil supply device to the oil storage tank, and the oil supply pipeline is communicated with the oil storage tank.

[0011] One end of the oil supply pipeline is provided with a sealing joint for connecting the oil supply pipeline to the oil supply device, and the sealing joint is connected to the oil supply device.

[0012] The surface of the oil supply device is provided with an anti-collision protective shell for external protection of the oil supply device, and the anti-collision protective shell is welded and fixed to the outer wall of the lifting groove.

[0013] An explosion-proof pressure relief device for preventing the hydraulic cylinder from bursting is provided between the cushion blocks, and the explosion-proof pressure relief device is connected to the hydraulic cylinder.

[0014] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0015] 1. Start the oil supply device to supply liquid to the oil storage tank through the oil supply pipeline, and then supply liquid to the hydraulic cylinder and the hydraulic oil pipe through the oil storage tank. One end of the hydraulic oil pipe is connected to the hydraulic cylinder through a connection valve, and the other end of the hydraulic oil pipe is communicated with the oil storage tank through a first connector. When an oil leakage occurs, close the oil supply device, then close the connection valve, thereby blocking the oil supply to the hydraulic cylinder, and then disassemble the first connector for maintenance, which is convenient for maintenance, shortens the maintenance time, and reduces the impact of the liquid leakage event on the work progress.

[0016] 2. An explosion-proof pressure relief device for preventing the hydraulic cylinder from bursting is provided between the cushion blocks, and the explosion-proof pressure relief device is connected to the hydraulic cylinder.

[0017] 3. The surface of the hydraulic push rod is provided with a protective sleeve for protecting the hydraulic push rod. Description of the Drawings

[0018] Figure 1 It is a main body cross-sectional view of an internal liquid inlet type push rod for a hydraulic support of the present utility model;

[0019] Figure 2 It is a schematic diagram of the main structure of the present utility model;

[0020] Figure 3 It is a schematic diagram of the upper view structure of the present utility model;

[0021] Figure 4 This is a side view cross-sectional view of the present utility model;

[0022] Figure 5 This is a top view cross-sectional view of the present utility model.

[0023] Description of reference numerals in the drawings: 100, hydraulic oil pipe; 101, lifting groove; 102, hydraulic cylinder; 103, hydraulic push rod; 104, connection valve; 105, first connector; 200, oil supply pipeline; 201, oil storage bin; 202, oil supply device; 203, push connection mechanism; 204, connection port; 205, sealing joint; 206, anti-collision protective shell; 300, sealing connector; 301, protective sleeve; 302, hydraulic connector; 400, cushion block; 401, positioning groove; 402, explosion-proof pressure relief device. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will combine the drawings of the embodiments of the present utility model Figures 1-5 to clearly and completely describe the technical solutions of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0025] As Figures 1-5 shown: This embodiment provides an internal liquid inlet type push rod for a hydraulic support, including a hydraulic oil pipe 100, a lifting groove 101, and a hydraulic cylinder 102 at the bottom of the lifting groove 101. Above the hydraulic cylinder 102, there is a hydraulic push rod 103 for driving the lifting of the hydraulic support. One end of the hydraulic oil pipe 100 is provided with a connection valve 104 for connecting the hydraulic oil pipe 100 to the hydraulic cylinder 102. The connection valve 104 can control the on / off of the hydraulic oil pipe 100 entering the hydraulic cylinder 102. The other end of the hydraulic oil pipe 100 is provided with a first connector 105 for connecting the hydraulic oil pipe 100 to the oil storage bin 201. The connection valve 104 is hermetically connected to the hydraulic cylinder 102. On the side of the first connector 105, there is an oil storage bin 201 for storing hydraulic oil. The first connector 105 is hermetically communicated with the oil storage bin 201. On one side of the oil storage bin 201, there are several oil supply pipelines 200 for connecting the oil storage bin 201 to the oil supply device 202. On one side of the oil supply pipeline 200, there is an oil supply device 202 for supplying hydraulic oil to the hydraulic cylinder 102.

[0026] In use, start the oil supply device 202 to make the oil supply pipeline 200 supply liquid to the oil storage tank 201, and then supply liquid to the hydraulic cylinder 102 and the hydraulic oil pipe 100 through the oil storage tank 201. One end of the hydraulic oil pipe 100 is connected to the hydraulic cylinder 102 through a connection valve 104, and the other end of the hydraulic oil pipe 100 is connected to the oil storage tank 201 through a first connector 105. When an oil leak occurs, turn off the oil supply device 202, then close the connection valve 104 to block the oil supply to the hydraulic cylinder 102, and then disassemble the first connector 105 for maintenance.

[0027] This embodiment provides an inner-feed type push rod for a hydraulic support.

[0028] As Figure 1 、 3 、4, and 5 show: A sealing connector 300 for connecting the hydraulic push rod 103 to the hydraulic cylinder 102 is provided at the lower end of the hydraulic push rod 103. The hydraulic push rod 103 is mechanically sealed to the sealing connector 300, and the lower end of the sealing connector 300 is mechanically sealed to the hydraulic cylinder 102. A protective sleeve 301 for protecting the hydraulic push rod 103 is provided on the surface of the hydraulic push rod 103. The protective sleeve 301 is sealed to the sealing connector 300. A hydraulic connector 302 for connecting the hydraulic push rod 103 to the push connection mechanism 203 is provided at the upper end of the hydraulic push rod 103. A push connection mechanism 203 for connecting the hydraulic connector 302 to an external device is provided at the upper end of the hydraulic connector 302. The hydraulic connector 302 and the push connection mechanism 203 are fixed by bolt connection.

[0029] As Figure 1 、 3 、5 show: A cushion block 400 for stabilizing the oil storage tank 201 is provided on the other side of the oil storage tank 201. A positioning groove 401 for installing the oil storage tank 201 is provided on one side of the cushion block 400. The oil storage tank 201 and the cushion block 400 are fixedly clamped through the positioning groove 401. The positioning groove 401 corresponds to one side of the oil storage tank 201, and the cushion block 400 is welded and fixed to the inner wall of the lifting groove 101.

[0030] As Figure 1 、 2As shown in Figures 4 and 5, on one side of the lifting groove 101, there are a number of connection ports 204 for installing the oil supply pipeline 200. Inside the connection port 204, there is an oil supply pipeline 200 for connecting the oil supply device 202 to the oil storage tank 201. Sealant is applied at the installation gap between the oil supply pipeline 200 and the connection port 204. The oil supply pipeline 200 is hermetically connected to the oil storage tank 201. One end of the oil supply pipeline 200 is provided with a seal joint 205 for connecting the oil supply pipeline 200 to the oil supply device 202. The seal joint 205 is hermetically connected to the oil supply pipeline 200, and the seal joint 205 is hermetically connected to the oil supply device 202. On the surface of the oil supply device 202, there is an anti-collision housing 206 for external protection of the oil supply device 202. The oil supply device 202 and the inner wall of the anti-collision housing 206 are fixed by bolt connection. The outer wall of the anti-collision housing 206 is fixedly welded to the outer wall of the lifting groove 101.

[0031] As shown in Figure 3 , 5 Figures 6 and 7, between the cushion blocks 400, there is an explosion-proof pressure relief device 402 for preventing the hydraulic cylinder 102 from bursting. The cushion blocks 400 and the explosion-proof pressure relief device 402 are fixed by bolt connection. The explosion-proof pressure relief device 402 is hermetically connected to the hydraulic cylinder 102.

[0032] In addition, it should be noted that in the description of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An internal liquid-inlet push rod for a hydraulic support, characterized in that: The invention comprises a hydraulic oil pipe (100), a lifting groove (101) and a hydraulic cylinder (102) at the bottom of the lifting groove (101); a hydraulic push rod (103) is arranged above the hydraulic cylinder (102); a connecting valve (104) is arranged at one end of the hydraulic oil pipe (100); a first connector (105) is arranged at the other end of the hydraulic oil pipe (100); the connecting valve (104) is connected to the hydraulic cylinder (102); an oil storage bin (201) is arranged on the side of the first connector (105); a plurality of oil supply pipelines (200) are arranged on one side of the oil storage bin (201); and an oil supply device (202) is arranged on one side of the oil supply pipeline (200).

2. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 1, characterized in that: A sealing connector (300) is provided at the lower end of the hydraulic push rod (103), and the lower end of the sealing connector (300) is connected to the hydraulic cylinder (102).

3. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 2, characterized in that: A protective sleeve (301) is provided on the surface of the hydraulic push rod (103).

4. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 3, characterized in that: A hydraulic connector (302) is provided at the upper end of the hydraulic push rod (103), and a push connection mechanism (203) is provided at the upper end of the hydraulic connector (302).

5. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 4, characterized in that: A cushion block (400) is provided on the other side of the oil storage bin (201), and a positioning groove (401) is provided on one side of the cushion block (400). The positioning groove (401) corresponds to one side of the oil storage bin (201), and the cushion block (400) is fixed to the inner wall of the lifting groove (101).

6. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 5, characterized in that: A plurality of connection ports (204) are provided on one side of the lifting groove (101), the oil supply pipeline (200) is provided in the connection port (204), and the oil supply pipeline (200) is communicated with the oil storage bin (201).

7. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 6, characterized in that: A sealing joint (205) is provided at one end of the oil supply pipeline (200), and the sealing joint (205) is connected to the oil supply device (202).

8. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 7, characterized in that: An anti-collision protective shell (206) is provided on the surface of the oil supply device (202), and the anti-collision protective shell (206) is welded and fixed to the outer wall of the lifting groove (101).

9. The internal liquid-inlet push rod for a hydraulic support as claimed in claim 8, characterized in that: An explosion-proof pressure relief device (402) is provided between the cushion blocks (400), and the explosion-proof pressure relief device (402) is connected to the hydraulic cylinder (102).

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