CN218556928U

CN218556928U - Steel-making continuous casting machine pendulum shear swing cylinder pin shaft dismantling tool

Info

Publication number: CN218556928U
Application number: CN202222595177.3U
Authority: CN
Inventors: 陈瑜; 韩小军
Original assignee: Jiuquan Iron and Steel Group Co Ltd
Current assignee: Jiuquan Iron and Steel Group Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-03-03
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a pendulum shear swing cylinder pin shaft demolition tool of a steelmaking continuous casting machine, which comprises a drawing rod and a drawing pin head, wherein the drawing rod is in threaded connection with the drawing pin head, a slide hammer is connected on the drawing rod in a sliding way, and the tail end of the drawing rod is provided with a stop block for limiting the motion of the slide hammer; the check block is positioned inside the sliding hammer, the end face of the check block is connected with a spring, and the other end of the spring is fixedly connected with the inner top wall of the sliding hammer. The connecting pin shaft of the swing cylinder can be quickly detached by the tool, time and labor are saved, the application range is wide, and the tool has better applicability.

Description

Steel-making continuous casting machine pendulum shear swing cylinder pin shaft dismantling tool

Technical Field

The utility model relates to a technical field is demolishd to the swing jar, concretely relates to steelmaking conticaster pendulum is cut swing jar round pin axle demolishs instrument.

Background

The pendulum shear swinging cylinder is used as main equipment for producing a steelmaking continuous casting machine, and the pendulum shear swinging cylinder has the function of driving a pendulum shear to cut a steel plate through the telescopic motion of the hydraulic cylinder. Based on the continuous production characteristics of a steelmaking continuous casting machine, strict standard requirements are provided for the operation states of all parts of the pendulum shears, and the pendulum cylinder is used as an important power component of the pendulum shears and needs to be replaced periodically according to the abrasion condition. The main link of the replacement of the swing cylinder is to remove two connecting pin shafts, and the pin shafts are in interference fit with the knuckle bearing and the lug plate due to the narrow removal space of the pin shafts. Therefore, the pin shaft is usually knocked out slowly by a hammer and a copper rod, and the joint bearing is guaranteed not to be damaged in the knocking process. Sometimes, when the pin cannot be knocked out, the pin is forced to be dismantled destructively in a gas cutting mode, the operation time is long, the operation time for dismantling one pin is 2~3 hours generally, and the labor intensity of operators in the operation process is high.

Later, field workers used outsourcing pin extractors for removal of connecting pins, and found that the following two problems existed in use: 1. the stop block of the purchased pin puller is exposed, the stop block and the sliding hammer are impacted in the pin pulling process, so that the hand is easy to clamp, especially under the condition of wearing gloves, the edge of an unstable palm is easy to clamp, and certain potential safety hazards exist; 2. due to the narrow dismantling space, the outsourcing pin puller is generally shortened for use, but the stroke of the sliding hammer is shortened, force cannot be generated, and the dismantling method is not as good as that of adopting a hand hammer and a copper rod.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steelmaking conticaster pendulum is cut swing jar round pin axle demolishs instrument to solve the problem that wastes time and energy when demolising swing jar connecting pin axle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pin shaft dismantling tool for a pendulum shear swing cylinder of a steelmaking continuous casting machine comprises a drawing rod and a pin pulling head, wherein the drawing rod is in threaded connection with the pin pulling head, a sliding hammer is connected to the drawing rod in a sliding mode, and a stop block for limiting the movement of the sliding hammer is arranged at the tail end of the drawing rod; the check block is positioned inside the sliding hammer, the end face of the check block is connected with a spring, and the other end of the spring is fixedly connected with the inner top wall of the sliding hammer.

Further, for improving the utility model discloses the application scope of pin pulling device, the pin pulling head is M5~ M20's screw rod.

Furthermore, in order to ensure that a larger resilience force can be provided in a very small compression space, the spring is a conical spring.

Furthermore, in order to avoid the generation of air cap in the sliding hammer in the dismantling process, the sliding hammer is also provided with an air hole.

The utility model has the advantages as follows:

1. when the tool is used for dismantling the pin shaft of the swing cylinder, the dismantling process is relatively simple, the operation is strong, and the tool is safe and reliable and is not easy to clamp hands.

2. When the device works in a conventional mode, the joint bearing is damaged when a worker uses a hammering pin shaft; meanwhile, the operation space is narrow, the hammering efficiency of the personnel is low, and the tool mode adopts a mode of pulling out the pin shaft, so that the defect of the conventional mode operation is avoided.

3. Through field inspection, the construction period of the tool is shortened by 60 percent, the number of personnel is reduced by 50 percent, and the labor productivity is obviously improved.

Drawings

FIG. 1 is a schematic view of the present invention;

in the figure, 1-drawing rod, 2-drawing pin head, 3-sliding hammer, 4-spring, 5-block and 6-air hole.

Detailed Description

The invention is further explained with reference to the drawings and the detailed description.

As shown in fig. 1, the dismounting tool for the pin shaft of the pendulum shear swing cylinder of the steelmaking continuous casting machine comprises a drawing rod 1 and a pin pulling head 2, wherein the drawing rod 1 is in threaded connection with the pin pulling head 2, a sliding hammer 3 is connected on the drawing rod 1 in a sliding manner, and a stop block 5 for limiting the outward movement of the sliding hammer 3 is arranged at the tail end of the drawing rod 1; the stop block 5 is positioned inside the sliding hammer 3, the end face of the stop block 5 is connected with a spring 4, the other end of the spring 4 is fixedly connected with the inner top wall of the sliding hammer 3, and the sliding hammer 3 is further provided with an air hole 6.

The working principle is as follows:

the pin pulling head 2 is connected with the pin shaft to be pulled out, the sliding hammer 3 slides back and forth along the pulling rod 1, and the pin shaft is pulled out by utilizing the impact force of the sliding hammer 3 impacting the stop block 5 and the resilience force of the spring 4 after being pressed.

The specific working process is as follows:

1. handling the hydraulic procedures of power failure and power stop of the swing cylinder of the pendulum shear of the continuous casting machine;

2. dismantling a hydraulic oil pipe on a swing cylinder of the pendulum shear, and dismantling an oil feeding pipeline, an end cover and the like on a pin shaft;

3. hoisting the oscillating cylinder body of the pendulum shear by using hoisting equipment;

4. screwing the pin pulling head 2 into a connecting pin shaft of the oscillating cylinder, and screwing and fixing the pin pulling head 2 and the pulling rod 1 by using a wrench;

5. an operator grasps the sliding hammer 3 to impact the stop block 5 back and forth at a high speed, impact force generated by the high-speed motion of the sliding hammer 3 is transmitted to the connecting pin shaft through the pin pulling head 2, and the connecting pin shaft can be pulled out of the pin hole after the operation is repeated for many times;

6. and similarly, the connecting pin shaft at the other end of the swing shear swing cylinder is removed, and the swing shear swing cylinder body can be hung down.

In the working process, the pin pulling head 2 can adopt screws of M5, M8, M10, M12, M14, M16 and M20 to adapt to connecting pin shafts with different diameters, so that the application range is expanded. The spring 4 can be a conical spring to ensure that a larger resilience force is provided in a limited compression space, and meanwhile, the conical spring has better transverse stability and bending resistance and is not easy to bend off axis in use. The air hole 6 can improve the sliding fluency of the sliding hammer 3 and avoid air from entering the inner cavity of the sliding hammer 3 to form an air cap in the sliding process.

Claims

1. The utility model provides a steelmaking conticaster pendulum shears swing cylinder round pin axle demolishs instrument which characterized in that: the pulling and pulling device comprises a pulling and pulling rod (1) and a pulling and pulling pin head (2), wherein the pulling and pulling rod (1) is in threaded connection with the pulling and pulling pin head (2), a sliding hammer (3) is connected onto the pulling and pulling rod (1) in a sliding manner, and a stop block (5) for limiting the movement of the sliding hammer (3) is arranged at the tail end of the pulling and pulling rod (1); the stop block (5) is positioned inside the sliding hammer (3), the end face of the stop block (5) is connected with a spring (4), and the other end of the spring (4) is fixedly connected with the inner top wall of the sliding hammer (3).

2. The steelmaking conticaster pendulum shear swing cylinder pin axle demolishs instrument of claim 1, characterized by: the pin pulling head (2) is a screw rod of M5-M20.

3. The steelmaking conticaster pendulum shear swing cylinder pin axle demolishs instrument of claim 1, characterized by: the spring (4) is a conical spring.

4. The steelmaking conticaster pendulum shear swing cylinder pin axle demolishs instrument of claim 1, characterized by: the sliding hammer (3) is provided with an air hole (6).