Fixing device for hoisting cylinder in mining hydraulic frame type hoisting system

Abstract

The utility model relates to the technical field of hoisting under a mine, in particular to a fixing device of a hoisting cylinder in a mining hydraulic frame type hoisting system. Comprising a limiting plate, a limiting hole is formed in one side of the limiting plate, a base is fixed to the back of the other side of the limiting plate, the base is fixed to a hoisting frame, the limiting plate is arranged on the outer side of the hoisting cylinder in a sleeving mode through the limiting hole and abuts against a mounting disc of the hoisting cylinder, and the limiting plate is connected with the mounting disc through a first bolt. An original point contact fixing mode is converted into a large-area contact fixing mode, the structural stability between the lifting cylinder and the cylinder body fixing frame is effectively improved, then the lifting work is safer and more reliable, and the assembling efficiency of the hydraulic support is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mine hoisting technology, and in particular to a fixing device of a hoisting cylinder in a mine hydraulic frame type hoisting system. BACKGROUND

[0002] The hydraulic frame type hoisting device plays a key role in the process of assembling the hydraulic support in the mine. However, in the actual use process, since the design of the mounting disc of the hoisting cylinder and the hoisting frame adopts the edge fixing mode of the hexagonal head bolt, the stress area is relatively small, and when hoisting the heavy load bearing structural members such as the top beam and the shield beam of the hydraulic support, the hoisting cylinder often falls off, which not only seriously restricts the assembly efficiency of the hydraulic support, but also may cause safety accidents and even threaten the personal safety of the operating personnel. SUMMARY

[0003] The utility model aims at solving the above problems, and provides a fixing device of a hoisting cylinder in a mine hydraulic frame type hoisting system.

[0004] The utility model solves the problem by adopting the technical scheme of:

[0005] A fixing device of a hoisting cylinder in a mine hydraulic frame type hoisting system, comprising a limiting plate, a limiting hole is formed in one side of the limiting plate, a base is fixed to the back of the other side of the limiting plate, the base is fixed on the hoisting frame, the limiting plate is sleeved on the outside of the hoisting cylinder through the limiting hole and abuts against the mounting disc of the hoisting cylinder, and the limiting plate is connected with the mounting disc through the first bolt.

[0006] The utility model adopting the above technical scheme has the prominent features compared with the prior art:

[0007] The original point contact fixing mode is converted into the fixing mode of large area contact, the structural stability between the hoisting cylinder and the cylinder body fixing frame is effectively improved, and then the hoisting work is more safe and reliable, and the assembly efficiency of the hydraulic support is greatly improved.

[0008] As a preferred embodiment, the utility model further has the technical scheme of:

[0009] Further, the limiting plate comprises two opposite positioning plates, one side of the base extends to the outside of the hoisting frame and is fixed with one side of the two positioning plates through the second bolt, and opposite semicircular holes are formed on the other side of the two positioning plates.

[0010] Further, the limiting plate is a steel plate with a thickness of 20mm.

[0011] Further, the number of the first bolts is even, and the first bolts are symmetrically arranged with the center of the mounting disc as the center. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure front view schematic drawing of the embodiment of the utility model;

[0013] Figure 2 It is the structure side view schematic drawing of the embodiment of the utility model;

[0014] Marked in the drawing: positioning plate 1, base 2, hoist cylinder 3, mounting disc 31, first bolt 4, second bolt 5. DETAILED DESCRIPTION

[0015] The utility model will be further explained in combination with the embodiment, the purpose is only in better understanding the contents of the utility model, therefore, the example held does not limit the protection scope of the utility model.

[0016] A hoist cylinder fixing device of a mine hydraulic frame type hoist system, including spacing plate, spacing plate one side is provided with spacing hole, spacing hole diameter 135mm, spacing plate other side's back is fixed with base 2, base 2 is 40mm*60mm*250mm iron block, base 2 is fixed on hoist frame, spacing plate is through spacing hole and is set on hoist cylinder 3 outside and is against hoist cylinder 3's mounting disc 31, spacing plate is connected with mounting disc 31 through first bolt 4. First bolt 4 uses two M20mm bolts.

[0017] Further, the spacing plate includes two opposite positioning plates 1, the size of the positioning plate 1 is 100*280mm, one side of the base 2 extends to the outside of the hoist frame and is fixed with one side of the two positioning plates 1 through the second bolt 5, respectively, opposite semicircular holes are provided on the other side of the two positioning plates 1, and the two semicircular holes are combined to form the spacing hole, the second bolt 5 uses two M20mm bolts, and the two positioning plates 1 are designed in a split hoop type, which facilitates the disassembly and maintenance of the hoist cylinder 3 and improves the maintenance efficiency.

[0018] Further, the spacing plate is a steel plate with a thickness of 20mm to ensure strength.

[0019] Further, the number of the first bolt 4 is even, and the first bolt 4 is symmetrically arranged with the center of the mounting disc 31 as the center point to ensure stability.

[0020] Bolt strength calculation: the maximum stress value of the bolt before being broken under tension is called the strength limit or tensile strength, and the calculation formula is: F=σs*A, F is the tension (allowable load), σs is the tensile strength of the material, A is the effective area (the effective cross-sectional area of the smallest diameter on the effective length of the bolt), the effective diameter of the M20 bolt is φ17mm, and the effective cross-sectional area is 227 mm 2, 8.8 level M20 bolt minimum tensile strength σs=830Mpa, F=830*227=188.41kN, so the minimum tensile strength of 8.8 level M20 bolt is 188.41kN, and the total tensile strength of four M20 bolts is 4*188.41=753.64kN, which meets the standard.

[0021] The original point contact fixing mode is converted into a large-area contact fixing mode, effectively improving the structural stability between the lifting cylinder 3 and the cylinder body fixing frame, and further making the lifting work more safe and reliable, greatly improving the assembly efficiency of the hydraulic support, the two positioning plates 1 adopt a split hoop type design, the lifting cylinder 3 is convenient to disassemble and maintain, and the maintenance efficiency is improved.

[0022] The above merely describes the preferred and feasible embodiments of the present application, and is not intended to limit the scope of the present application, and any equivalent changes made by using the content of the present application and the drawings are included in the scope of the present application.

Claims

1. A fixing device for the lifting cylinder in a mining hydraulic frame lifting system, characterized in that: Includes a limiting plate, with a limiting hole on one side of the limiting plate and a base fixed to the back of the other side of the limiting plate. The base is fixed to the lifting frame. The limiting plate is fitted onto the outside of the lifting cylinder through the limiting hole and abuts against the mounting plate of the lifting cylinder. The limiting plate and the mounting plate are connected by a first bolt.

2. The fixing device for the lifting cylinder in the mining hydraulic frame lifting system according to claim 1, characterized in that: The limiting plate includes two opposing positioning plates. One side of the base extends to the outside of the lifting frame and is fixed to one side of each of the two positioning plates by a second bolt. Semicircular holes are opened opposite each other on the other side of the two positioning plates, and the two semicircular holes are combined to form a limiting hole.

3. The fixing device for the lifting cylinder in the mining hydraulic frame lifting system according to claim 1, characterized in that: The limiting plate is made of 20mm thick steel plate.

4. The fixing device for the lifting cylinder in the mining hydraulic frame lifting system according to claim 1, characterized in that: The number of the first bolts is even, and they are symmetrically arranged with the center of the mounting plate as the center point.

Images