Installation method of easy-to-disassemble bottom adjustment jack mechanism

Abstract

The present invention discloses a method for installing an easily disassembled bottom adjustment jack mechanism. The bottom adjustment jack is installed on the base of a hydraulic support. The top of the bottom adjustment jack is an open space. The outer main reinforcement of the base is provided with a through hole. The cylinder body of the bottom adjustment jack is inserted into the through hole. The through hole serves as a guide hole for the bottom adjustment jack. A hinged ear plate is provided inside the base. The cylinder rod of the bottom adjustment jack is hinged to the hinged ear plate via a jack hinge pin. The hinged ear plate adopts a hook-groove structure, and the jack hinge pin is fixed to the cylinder rod of the bottom adjustment jack. After the bottom adjustment jack is installed, a stopper is installed between the front end of the cylinder rod and the inner main reinforcement of the base, and the stopper locking pin is fixed to the inner main reinforcement of the base. A lifting ring is provided above the cylinder body of the bottom adjustment jack. During disassembly and assembly, the support worker can complete the work while standing inside the support. The hinge pin does not need to be disassembled to avoid secondary assembly. The stopper structure is simple and easy to process and manufacture.

Description

Technical Field

[0001] The invention relates to a fully-mechanized hydraulic support for coal mine mining, in particular to an easily detachable bottom-adjusting jack mechanism. Background Art

[0002] The support plays a supporting and shielding role in coal mining production. The distance between adjacent supports is kept within a certain range through the bottom adjustment jack.

[0003] like Figure 1 As shown, the bottom adjustment jack is arranged inside the base of the support and is frequently used during coal mining and maintenance. Therefore, regular inspection, maintenance, removal and replacement and installation of the bottom adjustment jack is an important task in the underground use of the support.

[0004] like Figure 2a 、 Figure 2b As shown, the existing bottom adjustment jack mechanism includes a bottom adjustment jack, a locking pin shaft, a guide sleeve, etc.

[0005] Disadvantages of the prior art 1:

[0006] When replacing a bottom-adjusting jack, the jack must be pulled out along the sleeve for removal and installation, requiring a large working space. The spacing between adjacent supports underground is small, so replacement requires widening the spacing, which is labor-intensive and increases the exposed distance between the supports. Although there are roof beam side guards protecting the top, there are still certain safety risks. Summary of the Invention

[0007] The purpose of the present invention is to provide a bottom-adjusting jack mechanism that is easy to disassemble and assemble.

[0008] The purpose of the present invention is achieved through the following technical solutions:

[0009] The easily disassembled bottom adjustment jack mechanism of the present invention is characterized in that the bottom adjustment jack is installed on the base of the hydraulic support, the top of the bottom adjustment jack is an open space, the outer main reinforcement of the base is provided with a through hole, the cylinder body of the bottom adjustment jack is inserted into the through hole, and the through hole serves as a guide hole for the bottom adjustment jack, and a hinged ear plate is provided in the base, and the cylinder rod of the bottom adjustment jack is hinged to the hinged ear plate through the jack hinge pin.

[0010] It can be seen from the technical solutions provided by the present invention that the easily disassembled bottom adjustment jack mechanism provided in the embodiment of the present invention changes the installation method of the bottom adjustment jack so that it does not need to be pulled out as a whole, and can be disassembled and replaced in the bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the application state of the bottom adjustment jack mechanism in the prior art.

[0012] Figure 2a 、 Figure 2b They are schematic diagrams of the removal and installation structures of the bottom adjustment jack mechanism in the prior art.

[0013] Figure 3a A schematic diagram of the installation process of the easily detachable bottom adjustment jack mechanism provided in an embodiment of the present invention.

[0014] Figure 3b This is a schematic diagram of the top view of the easily detachable bottom adjustment jack mechanism provided in an embodiment of the present invention.

[0015] In the picture:

[0016] 1-base, 2-bottom adjustment jack, 3-locking pin, 4-guide sleeve, 5-pin locking seat and U-shaped clamp;

[0017] 6-Jack hinge pin, 7-Stop, 8-Stop locking pin, 9-Hinged ear plate, 10-Lifting ring. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the embodiments of the present invention. The contents not described in detail in the embodiments of the present invention belong to the prior art known to those skilled in the art.

[0019] The preferred embodiment of the easily detachable bottom adjustment jack mechanism of the present invention is:

[0020] The bottom adjustment jack is installed on the base of the hydraulic support. The top of the bottom adjustment jack is an open space. The main reinforcement outside the base is provided with a through hole. The cylinder body of the bottom adjustment jack is inserted into the through hole. The through hole serves as a guide hole for the bottom adjustment jack. A hinged ear plate is provided in the base. The cylinder rod of the bottom adjustment jack is hinged to the hinged ear plate through the jack hinge pin.

[0021] The hinged ear plate adopts a hook-groove structure, and the jack hinge pin is fixed on the cylinder rod of the bottom adjustment jack.

[0022] After the bottom adjustment jack is installed, a stopper is installed between the front end of the cylinder rod and the inner main reinforcement of the base.

[0023] The stopper is fixed to the inner main rib of the base via a stopper locking pin.

[0024] A lifting ring is provided above the cylinder body of the bottom adjustment jack.

[0025] The easily disassembled bottom adjustment jack mechanism of the present invention changes the installation mode of the bottom adjustment jack so that the bottom adjustment jack does not need to be pulled out as a whole, and can be disassembled, assembled and replaced in the bracket. Specific embodiments

[0026] like Figure 3a 、 Figure 3bAs shown, it includes a base 1, a bottom adjustment jack 2, a jack hinge pin 6, a stopper 7, a stopper locking pin 8, a hinge ear plate 9, a lifting ring 10, etc.

[0027] The cover plate and guide sleeve structure above the bottom-adjusting jack are eliminated, opening up the upper installation space and utilizing the through-holes on the outer main reinforcement of the base for guidance. The lug plate articulated with the jack adopts a hook-and-groove structure, eliminating the need to remove the articulation pin when replacing the jack. A lifting ring is added above the jack cylinder for easier lifting and use. After the jack is installed along the inner gear of the base, the block and the block locking pin are installed. The block acts as an axial limiter for the jack and the articulation pin. (Axial direction refers to the direction of movement of the jack.)

[0028] This mechanism has been tried and used in a variety of bracket bottom adjustment jack designs with good results.

[0029] This mechanism features innovative structural innovations while ensuring the proper function of the bottom-adjustment jack. During assembly and disassembly, the support worker can stand inside the support, eliminating the need for secondary assembly by removing the hinge pins. The simple stopper structure facilitates fabrication. Overall, this mechanism is safe, efficient, and saves labor and materials.

[0030] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for installing an easily disassembled bottom adjustment jack mechanism, characterized in that: The bottom adjustment jack mechanism includes a bottom adjustment jack, which is installed on the base of the hydraulic support. The top of the bottom adjustment jack is an open space. The outer main reinforcement of the base is provided with a through hole. The cylinder body of the bottom adjustment jack is inserted into the through hole. The through hole serves as a guide hole for the bottom adjustment jack. A hinged ear plate is provided in the base. The cylinder rod of the bottom adjustment jack is hinged to the hinged ear plate through a jack hinge pin. The hinged lug plate adopts a hook-slot structure, and the jack hinge pin is fixed on the cylinder rod of the bottom adjustment jack; A lifting ring is provided above the cylinder body of the bottom adjustment jack; The installation method is: After the bottom adjustment jack is installed along the inner gear of the base, a stopper and a stopper locking pin are installed between the front end of the cylinder rod and the inner main reinforcement of the base, wherein the stopper is fixed to the inner main reinforcement of the base through the stopper locking pin, and the stopper serves as an axial limit for the bottom adjustment jack and its hinge pin.

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