A method for quickly disassembling and assembling a hydraulic support balancing jack

Abstract

The present invention provides a method for quickly disassembling and assembling a balancing jack of a hydraulic support, wherein the balancing jack is disassembled and assembled by using a quick-disassembly tool, wherein the quick-disassembly tool comprises a transverse counterweight rod and a cylinder bottom connection portion arranged at the front end of the transverse counterweight rod, and comprises the following steps: lowering the hydraulic support to a suitable position; removing the top beam; connecting the cylinder bottom connection portion on the quick-disassembly tool with the cylinder bottom of the balancing jack, removing the pin shaft between the piston rod of the balancing jack and the shielding beam, and using a crane to pull the quick-disassembly tool and the balancing jack out of the front end of the shielding beam together; connecting the cylinder bottom connection portion on the quick-disassembly tool with the cylinder bottom of the repaired balancing jack, and after the crane pushes the piston rod end of the balancing jack to the shielding beam connection position and connects it with the pin shaft, the quick-disassembly tool is removed; and the top beam is installed. The method for quickly disassembling and assembling a balancing jack of a hydraulic support has the advantages of simple operation, few processes, high efficiency, low disassembly and assembly cost, and low risk of danger.

Description

Technical Field

[0001] The invention relates to the field of coal mine machinery disassembly and assembly, and in particular to a method for quickly disassembling and assembling a hydraulic support balancing jack. Background Art

[0002] like Figure 1 As shown, the hydraulic support mainly includes a base 1, a shielding beam 2, a top beam 3, a column 4 and a balancing jack 5, wherein the hinge shaft 12 between the shielding beam 2 and the top beam 3 is located on the inner side of the side guard plate baffle 6 of the top beam 3. During the general assembly inspection of the hydraulic support, it is often found that the jack is leaking or the electroplating surface is damaged. At this time, it is necessary to remove the installed jack, return to the previous process for repair, and then install it on the hydraulic support. Among them, the balancing jack 5 is located at the bottom of the top beam 3 and the shielding beam 2, and it cannot be directly disassembled and assembled by driving. The usual disassembly and assembly method requires first disassembling the top beam 3 and the shielding beam 2, and then disassembling the balancing jack 5 on the shielding beam 2. After the balancing jack 5 is repaired, the balancing jack 5, the shielding beam 2 and the top beam 3 are installed in sequence. On the one hand, this method increases the workload of disassembly and installation, resulting in long working time and high cost. On the other hand, due to the large size of the hydraulic support, the more parts are disassembled, the more likely it is to be dangerous.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and thus provide a method for quickly disassembling and assembling a hydraulic support balancing jack, which has the advantages of simple operation, fewer processes, high efficiency, low disassembly and assembly cost, and is not prone to danger.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a method for quickly disassembling and assembling a hydraulic support balancing jack, using a quick-release tool to disassemble and assemble the balancing jack, the quick-release tool comprises a transverse counterweight rod and a cylinder bottom connecting part arranged at the front end of the transverse counterweight rod, after the cylinder bottom connecting part is connected to the cylinder bottom of the balancing jack, the front end of the cylinder bottom connecting part is tightly pressed against the cylinder bottom of the balancing jack, a lifting ring is installed on the upper surface of the cylinder bottom connecting part, an auxiliary chain pull ring is installed at the rear end of the transverse counterweight rod, and the weight of the transverse counterweight rod is slightly greater than that of the balancing jack, comprising the following steps: the column is retracted to lower the hydraulic support to a suitable position, which should be neither too high nor too low, and should be made to a suitable position under the premise of ensuring the convenient height for the staff to operate. The protective beam is as close to the horizontal direction as possible; remove the top beam; connect the cylinder bottom connection part on the quick-release tool with the cylinder bottom of the balancing jack, connect the lifting ring and the hoist on the crane through a lifting chain, connect the auxiliary chain pull ring and the hoist on the crane through an auxiliary chain, remove the pin between the piston rod of the balancing jack and the protective beam, and the crane pulls the quick-release tool and the balancing jack out of the front end of the protective beam together; connect the cylinder bottom connection part on the quick-release tool with the cylinder bottom of the repaired balancing jack, connect the lifting ring and the hoist on the crane through a lifting chain, connect the auxiliary chain pull ring and the hoist on the crane through an auxiliary chain, and after the crane pushes the piston rod end of the balancing jack to the protective beam connection position and connects it with a pin, remove the quick-release tool; install the top beam.

[0006] Based on the above, when dismantling the top beam, remove the connection between the column and the top beam, remove the side guard plate of the top beam, use a homemade screw with a handle to screw into the threaded hole at the outer end of the hinge shaft between the top beam and the protective beam, pull out the hinge shaft, and lift the top beam with a crane to disassemble it from the protective beam.

[0007] Based on the above, the cylinder bottom connection part includes two ear plates and a cover plate. The two ear plates are vertically arranged, and the two ear plates are provided with pin holes corresponding to the positions. The cover plate is welded on the top of the two ear plates, and the lifting ring is arranged on the upper surface of the cover plate. After the pin holes on the ear plates are connected with the holes on the bottom of the cylinder of the balancing jack through the pins, the front end of the ear plates is pressed tightly against the bottom of the cylinder of the balancing jack.

[0008] Based on the above, the transverse counterweight rod is a round steel bar.

[0009] Compared with the prior art, the present invention has outstanding substantial features and significant progress. Specifically, after the quick-release tooling is connected to the balancing jack, the present invention utilizes the tightening force between the cylinder bottom connecting part and the cylinder bottom to make the two form a whole. At the same time, since the weight of the transverse counterweight rod is slightly larger than the balancing jack, during crane hoisting, the quick-release tooling and the balancing jack are in a relatively balanced state. The auxiliary chain maintains the direction of the transverse counterweight rod stable and prevents the rear end from descending and lifting the balancing jack. In this way, the steps of removing and installing the protective beam during the traditional disassembly and assembly of the balancing jack are omitted, thereby improving the disassembly and assembly efficiency and reducing the danger. It has the advantages of simple operation, fewer processes and high efficiency, low disassembly and assembly cost, and not prone to danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of a hydraulic support.

[0011] Figure 2 It is a structural schematic diagram of the balancing jack when being disassembled and assembled in the present invention.

[0012] Figure 3 It is a side structural schematic diagram of the quick-release tooling in the present invention.

[0013] Figure 4 It is a schematic diagram of the top surface structure of the quick-release tooling in the present invention.

[0014] Figure 5 It is a schematic diagram of the structure of the hinge shaft between the shield beam and the top beam in the present invention.

[0015] In the figure: 1. Base; 2. Protective beam; 3. Top beam; 4. Column; 5. Balance jack; 6. Side guard plate baffle; 7. Horizontal counterweight rod; 8. Ear plate; 9. Cover plate; 10. Lifting ring; 11. Screw with handle; 12. Articulated shaft; 13. Pin shaft hole; 14. Auxiliary chain pull ring; 15. Lifting chain; 16. Auxiliary chain; 17. Protective chain. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0017] like Figure 2-5As shown, a method for quickly disassembling and assembling a hydraulic support balancing jack is provided. A special quick-release tool is designed for the balancing jack 5. The quick-release tool specifically includes a transverse counterweight rod 7 and a cylinder bottom connecting part arranged at the front end of the transverse counterweight rod 7. The cylinder bottom connecting part includes two ear plates 8 and a cover plate 9. The two ear plates 8 are vertically arranged. The two ear plates 8 are provided with pin holes 13 corresponding to the positions. The cover plate 9 is welded to the top of the two ear plates 8. A lifting ring 10 is provided on the upper surface of the cover plate 9. An auxiliary chain pull ring 14 is installed at the rear end of the transverse counterweight rod 7. After the pin hole 13 on the ear plate 8 is connected to the hole on the cylinder bottom of the balancing jack 5 through a pin, the front end of the ear plate 8 is pressed tightly against the cylinder bottom of the balancing jack 5, thereby forming an integral structure that can be pulled by a vehicle together. The transverse counterweight rod 7 is specifically a round steel bar with a weight slightly greater than that of the balancing jack 5. The following steps are included:

[0018] (1) The column 4 retracts to lower the hydraulic support to a suitable position. The suitable position should be neither too high nor too low. The shield beam 2 should be as close to the horizontal direction as possible while ensuring the height for convenient operation of the staff.

[0019] (2) Remove the top beam 3, remove the connection between the column 4 and the top beam 3, remove the side guard plate 6 on the top beam 3, use a homemade screw with a handle 11 to screw into the threaded hole at the outer end of the hinge shaft 12 between the top beam 3 and the shield beam 2, pull out the hinge shaft 12, and use a crane to lift the top beam 3 to disassemble it from the shield beam 2. At this time, the balancing jack 5 maintains an upward tilted posture under the action of the protection chain 17;

[0020] (3) Connect the cylinder bottom connection part of the quick-release tool with the cylinder bottom of the balancing jack 5, connect the lifting ring 10 with the lifting equipment on the crane through the lifting chain 15, connect the auxiliary chain pull ring 14 with the lifting equipment on the crane through the auxiliary chain 16, remove the pin between the piston rod of the balancing jack 5 and the shielding beam 2, and pull the quick-release tool and the balancing jack 5 out of the front end of the shielding beam 2 together with the crane. During the lifting process, since the weight of the transverse counterweight rod 7 is slightly greater than that of the balancing jack 5, the quick-release tool and the balancing jack 5 are in a relatively balanced state, and the auxiliary chain 16 can ensure the directional stability of the transverse counterweight rod 7 and prevent the rear end from falling and lifting the balancing jack 5;

[0021] (4) Connect the cylinder bottom connection part on the quick-release tool to the cylinder bottom of the repaired balancing jack 5, connect the lifting ring 10 to the lifting device on the crane through the lifting chain 15, connect the auxiliary chain pull ring 14 to the lifting device on the crane through the auxiliary chain 16, and after the crane pushes the piston rod end of the balancing jack 5 into the connecting position of the shield beam 2 and connects it with a pin shaft, remove the quick-release tool;

[0022] (5) Install the top beam 1.

[0023] Compared with the traditional disassembly and assembly method, this disassembly and assembly method eliminates the step of disassembling and assembling the protective beam 2, and uses a self-made quick-disassembly tool to disassemble and assemble the balancing jack 5, which has the characteristics of simple operation, speed and safety, and effectively solves the pain points of the difficulty and low efficiency of repairing the balancing jack 5 after the support assembly, and greatly improves the disassembly and assembly efficiency; taking the 8.8-meter top coal caving hydraulic support as an example, the support disassembly and assembly time is reduced from the original 12 hours / frame to 6 hours / frame with the new process, the efficiency is improved by 50%, and the labor cost is also reduced by 50% compared with the traditional disassembly and assembly cost.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for quickly disassembling and assembling a balance jack of a hydraulic support, wherein the hydraulic support comprises a base, a shield beam, a top beam, a column and a balance jack, wherein: The hinge axis between the shield beam and the top beam is located on the inner side of the side guard plate baffle of the top beam; it is characterized in that the balancing jack is disassembled and assembled by using a quick-release tool, the quick-release tool comprises a transverse counterweight rod and a cylinder bottom connection part arranged at the front end of the transverse counterweight rod, after the cylinder bottom connection part is connected with the cylinder bottom of the balancing jack, the front end of the cylinder bottom connection part is pressed tightly against the cylinder bottom of the balancing jack, a lifting ring is installed on the upper surface of the cylinder bottom connection part, and an auxiliary chain pull ring is installed at the rear end of the transverse counterweight rod, the auxiliary chain keeps the direction of the transverse counterweight rod stable and prevents the rear end of the transverse counterweight rod from descending and tilting the balancing jack; the weight of the transverse counterweight rod is slightly greater than the balancing jack, and the steps are included: The columns retract to lower the hydraulic support to a suitable position, so that the shield beam is as close to the horizontal direction as possible; Remove the top beam: remove the connection between the column and the top beam, remove the side guard plate of the top beam, use a homemade screw with a handle to screw into the threaded hole at the outer end of the hinge shaft between the top beam and the protective beam, pull out the hinge shaft, and use a crane to lift the top beam to disassemble it from the protective beam; at this time, the balancing jack maintains an upward tilt under the action of the protective chain; Connect the cylinder bottom connection part on the quick-release tool with the cylinder bottom of the balance jack, connect the lifting ring with the lifting device on the crane through the lifting chain, connect the auxiliary chain pull ring with the lifting device on the crane through the auxiliary chain, remove the pin between the piston rod of the balance jack and the shield beam, and the crane pulls the quick-release tool and the balance jack out of the front end of the shield beam together; Connect the cylinder bottom connection part on the quick-release tooling with the cylinder bottom of the repaired balancing jack, connect the lifting ring with the lifting device on the crane through the lifting chain, connect the auxiliary chain pull ring with the lifting device on the crane through the auxiliary chain, and after the crane pushes the piston rod end of the balancing jack to the connecting position of the shield beam and connects it with a pin shaft, remove the quick-release tooling; Install the top beam.

2. The method for quickly disassembling and assembling a hydraulic support balancing jack according to claim 1 is characterized in that: The cylinder bottom connection part includes two ear plates and a cover plate. The two ear plates are vertically arranged. The two ear plates are provided with pin holes corresponding to the positions. The cover plate is welded to the top of the two ear plates. The lifting ring is arranged on the upper surface of the cover plate. After the pin holes on the ear plates are connected with the holes on the cylinder bottom of the balancing jack through the pins, the front end of the ear plates is pressed tightly against the cylinder bottom of the balancing jack.

3. The method for quickly disassembling and assembling the hydraulic support balancing jack according to claim 2 is characterized in that: The transverse counterweight rod is a round steel bar.

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