A dismounting device for a hammer head fixing pin of a pulverizer

Abstract

The utility model relates to a kind of dismounting device for fixed pin of hammer head of pulverizer, including limiting main pipe and impact lever;The left and right two side walls of the limiting main pipe are symmetrically provided with sliding slot;The impact lever is correspondingly arranged in the inside of limiting main pipe, and the left and right sides of impact lever are symmetrically fixed and connected with zip fastener, and zip fastener is respectively correspondingly worn out by two sides sliding slot.This application analyzes the structural characteristics of fixed pin of hammer head of pulverizer, considers the size of pulverizer workshop operation space, operation personnel's factors such as convenient transportation, and uses the inertial force generated when steel bar runs to impact pulverizer hammer head pin shaft to achieve the purpose of pin shaft removal.

Description

Technical Field

[0001] This utility model relates to the field of crusher technology, and in particular to a crusher hammer fixing pin disassembly and assembly device. Background Technology

[0002] The task of the coal preparation area of ​​the coal chemical branch of Xichang Steel and Vanadium Ironmaking Plant is to store and crush imported coking coal into coal that meets the requirements for coke oven production. The single type of coal used is transported directly from the integrated raw material yard via belt conveyor. The process involves pre-crushing the coal with a crusher, blending it, and then mixing and crushing the blended coal with another crusher.

[0003] However, due to the impact and wear from coal dust, the crusher hammers need to be replaced periodically every year. Currently, when replacing the hammers, one operator needs to hold the chisel while another uses a sledgehammer to strike the chisel and push out the fixing pin between the crusher hammer and the rotor. With this method, the operator can remove 5 rows of hammers on the first day, but due to physical limitations, they can only remove a maximum of 3 rows on the second day, and the removal efficiency decreases day by day. The manual labor intensity of the operators is high, the safety risk is high, and the maintenance efficiency is particularly low. Summary of the Invention

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a device for disassembling and assembling the hammer fixing pin of a crusher. By analyzing the structural characteristics of the hammer fixing pin of a crusher, and considering factors such as the size of the crusher workshop's operating space and the convenience of personnel handling the equipment, the device utilizes the inertial force generated by the steel bar during operation to impact the hammer pin shaft of the crusher, thereby achieving the purpose of removing the pin shaft.

[0005] The technical solution adopted in this utility model is as follows:

[0006] The present invention provides a device for disassembling and assembling a hammerhead fixing pin of a crusher, comprising a limiting main tube and an impact rod; the left and right side walls of the limiting main tube are symmetrically provided with sliding grooves; the impact rod is axially disposed inside the limiting main tube, and the left and right sides of the impact rod are symmetrically fixed with zippers, which pass through the sliding grooves on both sides respectively.

[0007] Furthermore, a fixed flange is coaxially welded to one end of the limiting main tube, and a support base is welded to the other end.

[0008] Furthermore, the support base is a trapezoidal plate.

[0009] Furthermore, stabilizing plates are symmetrically welded to the left and right sides of the outer wall of the limiting main tube.

[0010] Furthermore, the impact rod has a multi-segment structure, with each segment corresponding to the other end and connected by threads.

[0011] Furthermore, the limiting main tube is a stainless steel tube; the impact rod is a solid steel bar.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Field practice has proven that this invention effectively solves the problems of low efficiency and risk of injury associated with using a sledgehammer and chisel to disassemble the hammerhead pin of a crusher. The impact force generated by the sliding steel bar is greater than that of a manual hammer, thus significantly improving the disassembly efficiency of the hammerhead, reducing unit downtime, and increasing coal coke production. Furthermore, it is simple and convenient to operate, economical, practical, and safe, demonstrating strong practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the attached drawings, the following labels are used: 1-limiting main pipe; 11-slide groove; 12-fixed flange; 13-support base; 14-stabilizing plate; 2-impact rod; 21-zipper. Detailed Implementation

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] It should be noted that in the description of this utility model, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device or component must have a specific orientation, or be constructed and operated in a specific orientation.

[0018] See appendix Figure 1 The present invention proposes a device for disassembling and assembling the hammer fixing pin of a crusher, which includes a limiting main tube 1 and an impact rod 2.

[0019] In this embodiment, the limiting main tube 1 is a DN65 stainless steel tube with symmetrical grooves 11 on its left and right side walls; the impact rod 2 is axially arranged inside the limiting main tube 1, and zippers 21 are symmetrically fixed to the left and right sides of the impact rod 2, with the zippers 21 on both sides passing through the grooves 11 on both sides respectively.

[0020] The impact rod 2 is a solid steel bar with a multi-segment structure. The segments are assembled by connecting them end-to-end with threads. This allows the impact rod 2 to be transported in multiple sections, which can then be connected sequentially for on-site use.

[0021] One end of the limiting main pipe 1 is coaxially welded with a stainless steel fixing flange 12 for fixing the device to the crusher housing; the other end of the limiting main pipe 1 is welded with a support base 13, which is a trapezoidal steel plate for supporting the rear end of the device.

[0022] To ensure the stability of the device, axial stabilizing plates 14 are symmetrically welded on the left and right sides of the outer wall of the limiting main pipe 1. The stabilizing plates 14 are made of stainless steel.

[0023] The working principle of this utility model is as follows: Remove the upper cover of the passive end bearing seat of the crusher, and then use M16 bolts to fix the flange side of this device to the crusher housing, so that the limit main tube 1 and the crusher hammer pin hole are kept horizontal; remove the positioning hexagonal bolts on the crusher hammer pin isolation ring; install the impact rod 2 into the limit main tube 1, and have one person on each side drive the impact rod 2 to continuously impact the crusher hammer pin through the zipper 21. Usually, the pin can be knocked out after 2-4 impacts.

[0024] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A device for disassembling and assembling hammerhead fixing pins in a crusher, characterized in that: The device includes a limiting main tube and an impact rod; the left and right side walls of the limiting main tube are symmetrically provided with sliding grooves; the impact rod is axially disposed inside the limiting main tube, and the left and right sides of the impact rod are symmetrically fixed with zippers, which pass through the sliding grooves on both sides respectively.

2. The device for disassembling and assembling the hammerhead fixing pin of a crusher according to claim 1, characterized in that: One end of the limiting main tube is coaxially welded with a fixed flange, and the other end is welded with a support base.

3. The device for disassembling and assembling the hammerhead fixing pin of a crusher according to claim 2, characterized in that: The support base is a trapezoidal plate.

4. The device for disassembling and assembling the hammerhead fixing pin of a crusher according to claim 1, characterized in that: Stabilizing plates are symmetrically welded to the left and right sides of the outer wall of the limiting main pipe.

5. The device for disassembling and assembling the hammerhead fixing pin of a crusher according to claim 1, characterized in that: The impact rod has a multi-segment structure, with each segment corresponding to the other end and connected by threads.

6. The device for disassembling and assembling the hammerhead fixing pin of a crusher according to claim 1, characterized in that: The limiting main tube is a stainless steel tube; the impact rod is a solid steel bar.

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