Connecting device of pushing rod of hydraulic support

Abstract

The utility model provides a connecting device of a pushing rod of a hydraulic support, which belongs to the technical field of pushing rod connection and comprises a protective box body, a hydraulic cylinder and a hydraulic pushing rod, a telescopic protective tube is arranged on the outer surface of the hydraulic pushing rod, a fixing block is arranged on the surface of the bottom of the telescopic protective tube, a sliding rail is arranged in the middle of four sides of the fixing block, and a sliding block is arranged in the middle of the sliding rail. A linkage block is arranged on one side of the sliding block, a lifting rod is arranged below the linkage block, a lifting driver is arranged below the lifting rod, a connecting column is arranged above the linkage block, a connecting block is arranged above the connecting column, a square protection bin is arranged on the upper surface of the connecting block, the square protection bin covers the surface of the fixing block, and grooves are formed in the middles of the four edges of the lower surface of the square protection bin. The grooves correspond to the tops of the sliding rails, the linkage blocks can be driven to move through the lifting rods, then the linkage blocks drive the connecting columns and the connecting blocks to ascend and descend, then the connecting blocks drive the square protection bin to ascend and descend, and the square protection bin can be retracted into the protection box body and can also protect the hydraulic pushing rods through the grooves.

Description

Technical Field

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

[0002] The top coal caving hydraulic support is a support and caving equipment used for the fully mechanized mining face of thick coal seams. It is suitable for the mining of thick coal seams and extra-thick coal seams, as well as the mining of steeply inclined thick coal seams. It can effectively support and manage the roof, control the caving of top coal, and isolate the goaf. It can push itself forward, advance the front scraper conveyor, and pull the rear scraper conveyor. It can be used in conjunction with coal mining machines, conveyors and other equipment to achieve mechanization of the coal mining face. At the same time, it plays an important role in improving work efficiency, increasing production, ensuring the safety of personnel and equipment, and reducing labor intensity.

[0003] Most of the existing hydraulic supports use a hydraulic push rod 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 push rod needs to be connected to the hydraulic cylinder and the connection point is mostly located at the bottom of the hydraulic support and is easily damaged, when the hydraulic push rod is damaged, it will affect the safety performance of the entire equipment and thus cause a safety accident. In order to solve the above problem, a connecting device for the push rod of the hydraulic support is proposed to solve the above problem. Utility Model Content

[0004] In view of this, the utility model provides a connecting device for the push rod of the hydraulic support. The utility model can drive the linkage block to move through the lifting rod, and then the linkage block drives the connecting column and the connecting block to lift and lower, and then the connecting block drives the square protective bin to lift and lower. The square protective bin can be retracted into the protective box through the groove, and the hydraulic push rod can also be protected.

[0005] In order to solve the above technical problems, the utility model provides a connecting device for the push rod of the hydraulic support, including a protective box, a hydraulic cylinder and a hydraulic push rod, a telescopic protective tube is provided on the outer surface of the hydraulic push rod, a fixed block is provided on the bottom surface of the telescopic protective tube, a slide rail is provided in the middle of the four sides of the fixed block, a slider is provided in the middle of the slide rail, a linkage block is provided on one side of the slider, a lifting rod is provided below the linkage block, a lifting driver is provided below the lifting rod, a connecting column is provided above the linkage block, a connecting block is provided above the connecting column, a square protective bin is provided on the upper surface of the connecting block, the square protective bin covers the surface of the fixed block, grooves are provided in the middle of the four sides of the lower surface of the square protective bin, and the grooves correspond to the top of the slide rail.

[0006] The bottom of the four sides of the square protective bin are provided with protrusions for reinforcing the connection between the square protective bin and the connecting block. The lower end of the protrusion is fixed to the side of the connecting block, and the upper end of the protrusion is fixed to the outer surface of the square protective bin.

[0007] The connecting block is slidably matched with the slide rail, and an upper positioner is provided on the lower surface of the connecting block for connecting the connecting block and the connecting column. A connecting column for connecting the connecting block and the linkage block is provided at the lower end of the upper positioner, and a lower positioner for connecting the connecting column and the linkage block is provided at the lower end of the connecting column. The lower positioner is connected to the upper surface of the linkage block.

[0008] A lifting fixture for connecting the linkage block and the lifting rod is provided on the lower surface of the linkage block. A lifting rod for driving the linkage block and the square protective bin to lift and lower is provided at the lower end of the lifting fixture. A lifting connector for connecting the lifting rod and the lifting driver is provided at the lower end of the lifting rod. The lower end of the lifting connector is connected to the lifting driver.

[0009] The four sides of the inner wall of the protection box are provided with slideways for the sliding plate to assist the linkage block in moving. The top of the slideway is provided with a limit plate for controlling the sliding plate to move to the highest position. The slideway is provided with a sliding plate for cooperating with the linkage block to move.

[0010] One side of the sliding plate is connected with one end of the linkage block, and the slideway is slidably matched with the sliding plate.

[0011] The four corners of the lower surface of the fixing block are provided with upper positioning blocks for connecting the fixing block with the buffer pillar, and the lower end of the upper positioning block is provided with a buffer pillar for auxiliary support of the fixing block.

[0012] A lower positioning block for connecting the buffer support and the protection box is arranged at the lower end of the buffer support, the lower surface of the lower positioning block is fixed to the bottom of the protection box, and the lower surface of the lifting driver is fixed to the bottom of the protection box.

[0013] A hydraulic connector for connecting the hydraulic push rod and the hydraulic cylinder is arranged at the lower end of the hydraulic push rod, the hydraulic connector is connected to the hydraulic cylinder, and the lower end of the telescopic protective tube is fixed to the top of 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 lifting drive to make the lifting rod drive the linkage block to move, and then the sliding plate moves along the slideway. At the same time, the slider connected to the linkage block moves along the slide rail, so that the linkage block drives the connecting column to lift, and then the connecting column drives the connecting block to lift, and then the connecting block drives the square protective bin to lift. The square protective bin can be retracted into the protective box through the groove, and the hydraulic push rod can be protected, and then the push rod and the hydraulic cylinder are protected. The connection between them prevents the bottom from being easily damaged, thereby improving the safety performance of the overall equipment and reducing the occurrence of safety accidents.

[0016] 2. Upper positioning blocks for connecting the fixed block with the buffer pillar are arranged at the four corners of the lower surface of the fixed block, and a buffer pillar for auxiliary support of the fixed block is arranged at the lower end of the upper positioning block.

[0017] 3. The bottom of the four sides of the square protective bin are provided with protrusions for reinforcing the connection between the square protective bin and the connecting block. The lower end of the protrusion is fixed to the side of the connecting block, and the upper end of the protrusion is fixed to the outer surface of the square protective bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the connecting device of the push rod of the hydraulic support of the utility model;

[0019] Figure 2 It is a cross-sectional view of the main body of the utility model;

[0020] Figure 3 It is a front cross-sectional view of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the utility model viewed from above;

[0022] Figure 5 It is a side sectional view of the utility model;

[0023] Figure 6 It is a side sectional view of the utility model.

[0024] Explanation of the reference numerals: 100, protective box; 101, hydraulic cylinder; 102, hydraulic push rod; 103, telescopic protective tube; 104, hydraulic connector; 200, fixing block; 201, slide rail; 202, slider; 203, linkage block; 204, lifting rod; 205, lifting drive; 206, connecting column; 207, upper positioner; 208, lower positioner; 209, lifting fixture; 210, lifting connector; 300, connecting block; 301, square protective bin; 302, groove; 303, protrusion; 304, slide; 305, limit plate; 306, sliding plate; 400, upper positioning block; 401, buffer pillar; 402, lower positioning block. DETAILED DESCRIPTION

[0025] 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 1-6 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.

[0026] like Figure 1-6As shown: This embodiment provides a connecting device for the push rod of the hydraulic support, including a protective box 100, a hydraulic cylinder 101 and a hydraulic push rod 102. The outer surface of the hydraulic push rod 102 is provided with a telescopic protective tube 103 for hydraulic protection of the hydraulic push rod 102. The bottom surface of the telescopic protective tube 103 is provided with a fixing block 200 for fixing and clamping the telescopic protective tube 103. The middle of the four sides of the fixing block 200 is provided with a slide rail 201 for moving the slider 202. The middle of the slide rail 201 is provided with a slider 202 for connecting the slide rail 201 with a linkage block 203. One side of the slider 202 is provided with a linkage block 203 for connecting the slider 202 with a sliding plate 306. The linkage block 203 and the slider 202 are fixed by bolts. A fixing block 200 is provided below the linkage block 203. A lifting rod 204 is used to drive the linkage block 203 to rise and fall. A lifting driver 205 for driving the lifting rod 204 is provided below the lifting rod 204. A connecting column 206 for connecting the connecting block 300 with the linkage block 203 is provided above the linkage block 203. A connecting block 300 for connecting the connecting column 206 with the square protective bin 301 is provided above the connecting column 206. A square protective bin 301 for protecting the hydraulic push rod 102 and the hydraulic cylinder 101 is provided on the upper surface of the connecting block 300. The square protective bin 301 covers the surface of the fixed block 200. A groove 302 for the square protective bin 301 to enter the protective box 100 is provided in the middle of the four sides of the lower surface of the square protective bin 301, and the groove 302 corresponds to the top of the slide rail 201.

[0027] When in use, start the lifting drive 205 so that the lifting rod 204 drives the linkage block 203 to move, and then the sliding plate 306 moves along the slide 304. At the same time, the sliding block 202 connected to the linkage block 203 moves along the slide rail 201, so that the linkage block 203 drives the connecting column 206 to rise and fall, and then the connecting column 206 drives the connecting block 300 to rise and fall, and then the connecting block 300 drives the square protective bin 301 to rise and fall. Through the groove 302, the square protective bin 301 can be retracted into the protective box 100 and the hydraulic push rod 102 can also be protected.

[0028] This embodiment provides a connecting device for the push rod of the hydraulic support.

[0029] like Figure 1 , 2, 3, 4, and 5: The bottom of the four sides of the square protective bin 301 is provided with a protrusion 303 for reinforcing the connection between the square protective bin 301 and the connecting block 300, the lower end of the protrusion 303 is connected and fixed to the side of the connecting block 300 with bolts, and the upper end of the protrusion 303 is connected and fixed to the outer surface of the square protective bin 301 with bolts, the connecting block 300 is slidably matched with the slide rail 201, and the lower surface of the connecting block 300 is provided with an upper positioner 207 for connecting the connecting block 300 with the connecting column 206, and the connecting block 300 It is fixed to the upper positioner 207 by bolts. The lower end of the upper positioner 207 is provided with a connecting column 206 for connecting the connecting block 300 and the linkage block 203. The connecting column 206 and the upper positioner 207 are embedded and fixed. The lower end of the connecting column 206 is provided with a lower positioner 208 for connecting the connecting column 206 and the linkage block 203. The connecting column 206 and the lower positioner 208 are embedded and fixed. The lower positioner 208 is fixed to the upper surface of the linkage block 203 by bolts.

[0030] like Figure 2 , 3 As shown in , 5: A lifting fixture 209 for connecting the linkage block 203 and the lifting rod 204 is provided on the lower surface of the linkage block 203. The linkage block 203 and the lifting fixture 209 are fixed by bolts. A lifting rod 204 for driving the linkage block 203 and the square protective bin 301 to lift is provided at the lower end of the lifting fixture 209. The lifting rod 204 is mechanically connected to the lifting fixture 209. A lifting connector 210 for connecting the lifting rod 204 and the lifting driver 205 is provided at the lower end of the lifting rod 204. The lifting connector 210 is mechanically sealed with the lifting rod 204, and the lower end of the lifting connector 210 is sealed with the lifting driver 205.

[0031] like Figure 2 , 3 As shown in , 5 and 6: the inner wall of the protective box 100 is provided with slideways 304 on all four sides for the sliding plate 306 to assist the linkage block 203 in moving. The inner wall of the protective box 100 is welded and fixed to the slideway 304. The top of the slideway 304 is provided with a limit plate 305 for controlling the sliding plate 306 to move to the highest position. The slideway 304 and the limit plate 305 are connected and fixed with bolts. A sliding plate 306 for cooperating with the movement of the linkage block 203 is provided in the slideway 304. One side of the sliding plate 306 is connected and fixed to one end of the linkage block 203 with bolts, and the slideway 304 and the sliding plate 306 are slidably matched.

[0032] like Figure 2 , 3As shown in , 5: upper positioning blocks 400 for connecting the fixing block 200 with the buffer pillar 401 are provided at the four corners of the lower surface of the fixing block 200, the fixing block 200 and the upper positioning block 400 are fixed by bolts, a buffer pillar 401 for auxiliary support of the fixing block 200 is provided at the lower end of the upper positioning block 400, the buffer pillar 401 and the upper positioning block 400 are embedded and fixed, a lower positioning block 402 for connecting the buffer pillar 401 with the protective box 100 is provided at the lower end of the buffer pillar 401, the lower positioning block 402 and the buffer pillar 401 are embedded and fixed, the lower surface of the lower positioning block 402 is connected and fixed to the bottom of the protective box 100 by bolts, and the lower surface of the lifting drive 205 is connected and fixed to the bottom of the protective box 100 by bolts.

[0033] like Figure 2 , 5 As shown: a hydraulic connector 104 for connecting the hydraulic push rod 102 with the hydraulic cylinder 101 is provided at the lower end of the hydraulic push rod 102, the hydraulic push rod 102 and the hydraulic connector 104 are mechanically sealed and connected, the hydraulic connector 104 and the hydraulic cylinder 101 are sealed and connected, and the lower end of the telescopic protective tube 103 is sealed and fixed to the top of the hydraulic cylinder 101.

[0034] 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.

[0035] 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 connecting device for a push rod of a hydraulic support, characterized in that: The invention comprises a protective box (100), a hydraulic cylinder (101) and a hydraulic push rod (102); a telescopic protective tube (103) is provided on the outer surface of the hydraulic push rod (102); a fixed block (200) is provided on the bottom surface of the telescopic protective tube (103); a slide rail (201) is provided in the middle of four sides of the fixed block (200); a slider (202) is provided in the middle of the slide rail (201); a linkage block (203) is provided on one side of the slider (202); a lifting rod (204) is provided below the linkage block (203); A lifting driver (205) is provided below the lifting rod (204); a connecting column (206) is provided above the linkage block (203); a connecting block (300) is provided above the connecting column (206); a square protective bin (301) is provided on the upper surface of the connecting block (300); the square protective bin (301) covers the surface of the fixed block (200); grooves (302) are provided in the middle of the four sides of the lower surface of the square protective bin (301); the grooves (302) correspond to the top of the slide rail (201).

2. The connecting device of the push rod of the hydraulic support according to claim 1, characterized in that: The bottom of the four sides of the square protective bin (301) are provided with protrusions (303), the lower ends of the protrusions (303) are fixed to the side surfaces of the connecting blocks (300), and the upper ends of the protrusions (303) are fixed to the outer surface of the square protective bin (301).

3. The connecting device of the push rod of the hydraulic support according to claim 2, characterized in that: The connecting block (300) is slidably matched with the slide rail (201); an upper positioner (207) is provided on the lower surface of the connecting block (300); a connecting column (206) is provided at the lower end of the upper positioner (207); a lower positioner (208) is provided at the lower end of the connecting column (206); and the lower positioner (208) is connected to the upper surface of the linkage block (203).

4. The connecting device of the push rod of the hydraulic support according to claim 3, characterized in that: A lifting fixture (209) is provided on the lower surface of the linkage block (203), the lifting rod (204) is provided at the lower end of the lifting fixture (209), a lifting connector (210) is provided at the lower end of the lifting rod (204), and the lower end of the lifting connector (210) is connected to the lifting driver (205).

5. The connecting device of the push rod of the hydraulic support according to claim 4, characterized in that: Slideways (304) are provided on four sides of the inner wall of the protection box (100), a limiting plate (305) is provided at the top of the slideway (304), and a sliding plate (306) is provided inside the slideway (304).

6. The connecting device of the push rod of the hydraulic support according to claim 5, characterized in that: One side of the sliding plate (306) is connected to one end of the linkage block (203), and the slideway (304) is slidably matched with the sliding plate (306).

7. The connecting device of the push rod of the hydraulic support according to claim 6, characterized in that: An upper positioning block (400) is provided at four corners of the lower surface of the fixing block (200), and a buffer support column (401) is provided at the lower end of the upper positioning block (400).

8. The connecting device of the push rod of the hydraulic support according to claim 7, characterized in that: A lower positioning block (402) is provided at the lower end of the buffer support column (401), the lower surface of the lower positioning block (402) is fixed to the bottom of the protection box (100), and the lower surface of the lifting driver (205) is fixed to the bottom of the protection box (100).

9. The connecting device of the push rod of the hydraulic support according to claim 8, characterized in that: A hydraulic connector (104) is provided at the lower end of the hydraulic push rod (102), the hydraulic connector (104) is connected to the hydraulic cylinder (101), and the lower end of the telescopic protective tube (103) is fixed to the top of the hydraulic cylinder (101).

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