Hydraulic support pushing rod

Abstract

The utility model provides a hydraulic support pushing rod, which belongs to the technical field of hydraulic supports and comprises a hydraulic rod, a hydraulic cylinder and a top plate, an upper telescopic protective tube is arranged on the outer surface of the upper portion of the hydraulic rod, a middle telescopic protective tube is arranged on the outer surface of the middle of the hydraulic rod, a lower telescopic protective tube is arranged on the outer surface of the lower portion of the hydraulic rod, and an anti-collision block is arranged on the outer surface of the lower telescopic protective tube. A protective shell is arranged below the anti-collision block, the hydraulic cylinder is fixed to the bottom of the protective shell, a mounting frame is arranged on the lower surface of the protective shell, and a protective box is arranged below the top plate. The protective box can be fixed to the bottom of a hydraulic support through the mounting frame, the upper portion of a hydraulic rod is protected through an upper telescopic protective pipe, and the middle of the hydraulic rod is protected through a middle telescopic protective pipe; the lower telescopic protective pipe protects the bottom of the hydraulic rod, the protective shell protects the hydraulic rod, the hydraulic cylinder and the connecting position of the hydraulic rod and the hydraulic cylinder, the protective box body is matched with the hollow cavity to reinforce and protect the upper telescopic protective pipe and the middle telescopic protective pipe, and the anti-collision block reinforces and protects the lower telescopic protective pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a hydraulic support push rod. Background Art

[0002] The hydraulic support is a structure used to control the mine pressure at the coal mining face. The mine pressure at the mining face acts on the hydraulic support in the form of external load. In the mechanical system of the interaction between the hydraulic support and the surrounding rock of the mining face, if the combined force of the supporting parts of the hydraulic support and the combined force of the external load acting on the hydraulic support by the roof are exactly in the same line, then the hydraulic support is very adaptable to the surrounding rock of the mining face. Moreover, the hydraulic support not only has the basic advantages of the traditional protective support, but also greatly improves the supporting capacity, increases the working space and supporting capacity, and the structure and operation of the support are relatively simple.

[0003] Most of the existing hydraulic supports use hydraulic rods connected to the top plate, thereby driving the top plate to rise and fall to achieve the purpose of pushing the hydraulic support. However, because the hydraulic rod needs to be connected to the hydraulic cylinder and the connection is mostly located at the bottom of the hydraulic support, it is easy to be damaged. After searching, such as patent application number: CN208650889U, it solves the problem of moving the hydraulic support, but there is no protective structure at the bottom of the second column. Coal mine work is usually more dangerous, and the bottom of the second column is easily damaged by foreign objects. When the second column is damaged, it will affect the safety performance of the overall equipment, and then cause a safety accident. In order to solve the above problems, a hydraulic support pushing rod is proposed to solve the above problems. Utility Model Content

[0004] In view of this, the utility model provides a hydraulic support push rod. The utility model can be fixed to the bottom of the hydraulic support by using a mounting frame, and the upper part of the hydraulic rod is protected by an upper telescopic protective tube, the middle part of the hydraulic rod is protected by a middle telescopic protective tube, and the bottom of the hydraulic rod is protected by a lower telescopic protective tube. The protective shell protects the hydraulic rod and the hydraulic cylinder and their connection. The protective box is equipped with a hollow cavity to reinforce and protect the upper telescopic protective tube and the middle telescopic protective tube, and the anti-collision block reinforces and protects the lower telescopic protective tube.

[0005] In order to solve the above technical problems, the utility model provides a hydraulic support push rod, including a hydraulic rod, a hydraulic cylinder and a top plate. The upper outer surface of the hydraulic rod is provided with an upper telescopic protective tube, the middle outer surface of the hydraulic rod is provided with a middle telescopic protective tube, the lower outer surface of the hydraulic rod is provided with a lower telescopic protective tube, the outer surface of the lower telescopic protective tube is provided with an anti-collision block, a protective shell is provided below the anti-collision block, the hydraulic cylinder is fixed to the bottom of the protective shell, a mounting frame is provided on the lower surface of the protective shell, and a protective box is provided below the top plate.

[0006] A connecting fixture for connecting the hydraulic rod with the top plate is arranged at the upper end of the hydraulic rod, and the upper surface of the connecting fixture is fixed to the lower surface of the top plate.

[0007] A hydraulic connector for connecting the hydraulic rod and the hydraulic cylinder is arranged at the lower end of the hydraulic rod, and the hydraulic connector is connected to the hydraulic cylinder.

[0008] A hollow cavity for protecting the middle telescopic protective tube and the upper telescopic protective tube is provided in the middle of the protective box. The length and width of the hollow cavity are greater than the length and width of the anti-collision block. The four sides of the protective box are made of thin steel plates welded together.

[0009] The four corners of the bottom of the anti-collision block are welded with positioning blocks for opening threaded holes, and the middle of the positioning block is penetrated by a threaded hole for fixing and moving the threaded screw rod.

[0010] The four corners of the bottom of the protection box body are provided with connecting plates for connecting the threaded screw rod with the protection box body, and the middle part of the connecting plate corresponds to the threaded hole.

[0011] A threaded screw for controlling the upward and downward movement of the protective box is arranged in the threaded hole. The threaded screw cooperates with the thread of the threaded hole. The upper end of the threaded screw is welded and fixed to the lower surface of the connecting plate. A rotating button for driving the threaded screw is welded at the lower end of the threaded screw.

[0012] Reflective strips for nighttime operation warnings are provided on both sides of the middle of the four sides of the anti-collision block.

[0013] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0014] 1. Use the mounting frame to fix it to the bottom of the hydraulic support, protect the upper part of the hydraulic rod through the upper telescopic protective tube, protect the middle part of the hydraulic rod through the middle telescopic protective tube, protect the bottom of the hydraulic rod through the lower telescopic protective tube, and protect the hydraulic rod and the hydraulic cylinder and their connection with the protective shell, thereby protecting the hydraulic rod, the hydraulic cylinder and the connection between the hydraulic cylinder and the hydraulic rod to prevent them from being damaged by foreign objects, thereby improving the overall safety performance of the hydraulic support and reducing the occurrence of safety accidents caused by the damage of the hydraulic rod.

[0015] 2. The protective box is equipped with a hollow cavity to reinforce and protect the upper telescopic protective tube and the middle telescopic protective tube, and the anti-collision block is used to reinforce and protect the lower telescopic protective tube.

[0016] 3. The protective box can be moved up and down by cooperating with the threaded screw and the threaded hole and the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of a hydraulic support push rod of the utility model;

[0018] Figure 2 It is a side sectional view of the utility model;

[0019] Figure 3It is a front cross-sectional view of the utility model;

[0020] Figure 4 It is a bottom view of the main structure of the utility model.

[0021] Explanation of the reference numerals: 100, hydraulic rod; 101, hydraulic cylinder; 102, top plate; 103, upper telescopic protective tube; 104, middle telescopic protective tube; 105, lower telescopic protective tube; 106, mounting frame; 200, anti-collision block; 201, connecting fixture; 202, hydraulic connector; 203, reflective strip; 300, protective shell; 301, positioning block; 302, threaded hole; 303, connecting plate; 304, protective box; 305, hollow cavity; 306, threaded screw; 307, rotating button. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-4 The technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the utility model.

[0023] like Figure 1-4 As shown: This embodiment provides a hydraulic support push rod, including a hydraulic rod 100, a hydraulic cylinder 101 and a top plate 102, the upper outer surface of the hydraulic rod 100 is provided with an upper telescopic protective tube 103 for protecting the upper part of the hydraulic rod 100, the middle outer surface of the hydraulic rod 100 is provided with a middle telescopic protective tube 104 for protecting the middle part of the hydraulic rod 100, the upper telescopic protective tube 103 is mechanically connected to the middle telescopic protective tube 104, the middle telescopic protective tube 104 is mechanically connected to the lower telescopic protective tube 105, and the lower outer surface of the hydraulic rod 100 is provided with a lower telescopic protective tube for protecting the bottom of the hydraulic rod 100 105. The outer surface of the lower telescopic protective tube 105 is provided with an anti-collision block 200 for protecting foreign objects from colliding with the lower telescopic protective tube 105. The anti-collision block 200 is welded and fixed to the outer surface of the lower telescopic protective tube 105. A protective shell 300 for protecting the hydraulic cylinder 101 is provided below the anti-collision block 200. The hydraulic cylinder 101 is fixed to the bottom of the protective shell 300 by bolts. A mounting frame 106 for connecting the hydraulic cylinder 101 with the hydraulic support is provided on the lower surface of the protective shell 300. A protective box 304 for protecting the outer surfaces of the middle telescopic protective tube 104 and the upper telescopic protective tube 103 is provided below the top plate 102.

[0024] When in use, the mounting frame 106 is fixed to the bottom of the hydraulic support, the upper part of the hydraulic rod 100 is protected by the upper telescopic protective tube 103, the middle telescopic protective tube 104 protects the middle part of the hydraulic rod 100, the lower telescopic protective tube 105 protects the bottom of the hydraulic rod 100, the protective shell 300 protects the hydraulic rod 100 and the hydraulic cylinder 101 and their connection, the protective box 304 is matched with the hollow cavity 305 to reinforce and protect the upper telescopic protective tube 103 and the middle telescopic protective tube 104, and the anti-collision block 200 reinforces and protects the lower telescopic protective tube 105.

[0025] This embodiment provides a hydraulic support push rod,

[0026] like Figure 1 , 2 As shown: a connecting fixture 201 for connecting the hydraulic rod 100 with the top plate 102 is provided at the upper end of the hydraulic rod 100, the hydraulic rod 100 is mechanically connected to the connecting fixture 201, the upper surface of the connecting fixture 201 and the lower surface of the top plate 102 are connected and fixed by bolts, and a hydraulic connector 202 for connecting the hydraulic rod 100 with the hydraulic cylinder 101 is provided at the lower end of the hydraulic rod 100, and the hydraulic connector 202 is mechanically sealed and connected to the hydraulic cylinder 101.

[0027] like Figure 1 , 3 As shown: a hollow cavity 305 for protecting the middle telescopic protective tube 104 and the upper telescopic protective tube 103 is provided in the middle of the protective box 304. The hollow cavity 305 covers the outer surfaces of the middle telescopic protective tube 104 and the upper telescopic protective tube 103. The length and width of the hollow cavity 305 are greater than the length and width of the anti-collision block 200. The four sides of the protective box 304 are made of thin steel plates welded together.

[0028] like Figure 2 , 3 As shown in , 4: the four corners of the bottom of the anti-collision block 200 are welded with positioning blocks 301 for opening threaded holes 302, and the middle of the positioning block 301 is penetrated by a threaded hole 302 for fixing and moving the threaded screw 306, and the four corners of the bottom of the protective box 304 are provided with connecting plates 303 for connecting the threaded screw 306 with the protective box 304, the connecting plate 303 is welded and fixed to the four corners of the bottom of the protective box 304, the middle of the connecting plate 303 corresponds to the threaded hole 302, and a threaded screw 306 for controlling the up and down movement of the protective box 304 is provided in the threaded hole 302, the threaded screw 306 is threadedly matched with the threaded hole 302, the upper end of the threaded screw 306 is welded and fixed to the lower surface of the connecting plate 303, and the lower end of the threaded screw 306 is welded with a rotating button 307 for driving the threaded screw 306.

[0029] like Figure 1 , 4As shown: reflective strips 203 for nighttime operation warning are provided on both sides of the middle of the four sides of the anti-collision block 200, and the anti-collision block 200 and the reflective strips 203 are fixed with glue.

[0030] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A hydraulic support push rod, characterized in that: The invention comprises a hydraulic rod (100), a hydraulic cylinder (101) and a top plate (102); an upper telescopic protective tube (103) is provided on the upper outer surface of the hydraulic rod (100); a middle telescopic protective tube (104) is provided on the middle outer surface of the hydraulic rod (100); a lower telescopic protective tube (105) is provided on the lower outer surface of the hydraulic rod (100); an anti-collision block (200) is provided on the outer surface of the lower telescopic protective tube (105); a protective shell (300) is provided below the anti-collision block (200); the hydraulic cylinder (101) is fixed to the bottom of the protective shell (300); a mounting frame (106) is provided on the lower surface of the protective shell (300); and a protective box (304) is provided below the top plate (102).

2. A hydraulic support push rod as claimed in claim 1, characterized in that: A connecting fixture (201) is provided at the upper end of the hydraulic rod (100), and the upper surface of the connecting fixture (201) is fixed to the lower surface of the top plate (102).

3. A hydraulic support push rod as claimed in claim 2, characterized in that: A hydraulic connector (202) is provided at the lower end of the hydraulic rod (100), and the hydraulic connector (202) is connected to the hydraulic cylinder (101).

4. A hydraulic support push rod as claimed in claim 3, characterized in that: A hollow cavity (305) is provided in the middle of the protection box body (304), the length and width of the hollow cavity (305) are greater than the length and width of the anti-collision block (200), and the four sides of the protection box body (304) are made of thin steel plates welded together.

5. A hydraulic support push rod as claimed in claim 4, characterized in that: Positioning blocks (301) are welded at the four corners of the bottom of the anti-collision block (200), and a threaded hole (302) is penetrated through the middle of the positioning block (301).

6. A hydraulic support push rod as claimed in claim 5, characterized in that: The four corners of the bottom of the protection box body (304) are provided with connecting plates (303), and the middle part of the connecting plate (303) corresponds to the threaded hole (302).

7. A hydraulic support push rod as claimed in claim 6, characterized in that: A threaded screw rod (306) is provided in the threaded hole (302), the threaded screw rod (306) is threadedly matched with the threaded hole (302), the upper end of the threaded screw rod (306) is welded and fixed to the lower surface of the connecting plate (303), and a rotating button (307) is welded to the lower end of the threaded screw rod (306).

8. A hydraulic support push rod as claimed in claim 7, characterized in that: Reflective strips (203) are provided on both sides of the middle of the four sides of the anti-collision block (200).

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