CN204525346U - Novel pin remover - Google Patents

Abstract

The utility model discloses a novel pin puller, which relates to the technical field of dismantling tools, and comprises a beam and two screw rods. A threaded hole for threaded fit on the upper part of the pin shaft. Use the threaded hole in the middle of the beam to match the upper end of the pin shaft to be replaced, and then push the lower ends of the screw rods at both ends of the beam on the pusher shell. When the screw rod is turned, the beam rises, which in turn drives the pin shaft up, and finally the pin shaft is pulled out. The utility model has the advantages of simple structure and convenient operation, simple and convenient manufacture, economical and practical, and stable performance. Using the utility model can save manpower and material resources in the maintenance process, greatly reduce the impact time of equipment, improve maintenance efficiency, and reduce workers' fatigue. Labor intensity also improves equipment utilization.

Description

New pin puller

technical field

The utility model relates to the technical field of removal tools.

Background technique

A pin shaft is installed on the top of the pusher on the crown block brake. Because the pin shaft and the pusher have an interference fit and the exposed part is provided with external threads, the exposed part of the pin shaft is prone to rust or wear. The shaft failure rate also increases accordingly. When the pin shaft is severely worn, it is easy to cause the brake to shake and make the equipment unable to operate normally. Especially when the pin shaft is corroded, rusted, worn and broken, it is difficult for maintenance personnel to take out the broken pin shaft for replacement, which takes a long time and increases The workload of maintenance personnel is reduced, the consumption of materials is also increased, and the impact time of equipment is prolonged. In order to meet the production needs, reduce maintenance time, and improve the maintenance efficiency of the pin shaft, we have designed a new type of pin puller through calculation.

Utility model content

The technical problem to be solved by the utility model is to provide a new pin puller with simple structure and convenient operation, which reduces labor intensity of workers and improves maintenance efficiency.

In order to solve the problems of the technologies described above, the technical solution adopted by the utility model is:

A new pin puller includes a beam and two screw rods. The two screw rods are arranged symmetrically at both ends of the beam and threaded with the beam. The middle part of the beam is provided with a threaded hole that is threaded with the upper part of the pin shaft to be replaced.

Preferably, a sleeve is provided in the threaded hole in the middle of the beam, and a blind hole is provided at the lower end of the sleeve, and an internal thread is provided in the blind hole to cooperate with the thread on the upper part of the pin shaft to be replaced.

Preferably, both the sleeve and the top of the screw rod are provided with nuts, and the sleeve is externally provided with external threads that cooperate with the threaded holes in the middle of the beam.

Preferably, a top screw hole is provided on the side of the sleeve, and the top screw hole communicates with the blind hole.

The beneficial effect produced by adopting the above technical solution is: use the sleeve arranged on the crossbeam to thread the upper end of the pin shaft to be replaced, and then press the lower ends of the screw rods at both ends of the crossbeam on the pusher shell, and drive the crossbeam up while rotating the screw rod. Then drive the pin shaft to rise, and finally pull out the pin shaft; for the pin shaft with serious corrosion of the external thread, use the jacking wire to fix it tightly after mating with the sleeve, and then repeat the above steps to pull out the pin shaft. The utility model has the advantages of simple structure and convenient operation, simple and convenient manufacture, economical and practical, and stable performance. The utility model can save manpower and material resources in the maintenance process, greatly reduce the impact time of equipment, improve maintenance efficiency, and reduce workers' fatigue. Labor intensity also improves equipment utilization.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation of sleeve among Fig. 1;

In the figure: 1-beam, 2-screw, 3-pin shaft, 4-sleeve, 5-nut, 6-top screw hole, 7-blind hole, 8-propeller shell.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

A new type of pin puller as shown in Figures 1 and 2, includes a beam 1 and two screw rods 2, the two screw rods 2 are symmetrically arranged at both ends of the beam 1 and threaded with the beam 1, and the middle part of the beam 1 is provided with A threaded hole threaded on the upper part of the pin shaft 3 to be replaced.

As a preferred structure, a sleeve 4 is provided in the threaded hole in the middle of the crossbeam 1, and a blind hole 7 is provided at the lower end of the sleeve 4, and an inner screw threaded with the upper part of the pin shaft 3 to be replaced is provided in the blind hole 7. thread.

In order to facilitate the installation of the sleeve 4 and the rotating screw 2, a nut 5 is provided on the top of the sleeve 4 and the screw. The internal thread of the blind hole 7 will fail after the sleeve 4 is used for a long time, and the sleeve 4 that is flexibly connected is more convenient to replace.

For the pin shaft 3 with severe external thread corrosion, the force between it and the sleeve 4 is very small, and a top screw hole 6 is provided on the side of the sleeve 4, and the top screw hole 6 is connected with the blind hole 7, and the sleeve 4 Put it on the pin shaft 3, and then use the jacking screw to cooperate with the jacking screw hole 6 to tighten and fix the pin shaft 3, so as to prevent the sleeve 4 from slipping off from the pin shaft 3 when the screw rod 2 is rotated.

In specific use, use the sleeve 4 arranged on the beam 1 to thread the upper end of the pin shaft 3 to be replaced, and then push the lower ends of the screw rod 2 at both ends of the beam 1 on the pusher shell 8, and drive the beam 1 to rise while turning the screw rod 2 , and then drive the pin shaft 3 to rise, and finally pull out the pin shaft 3; for the pin shaft with serious corrosion of the external thread, use the jacking screw to fix it tightly after cooperating with the sleeve 4, and then repeat the above steps to remove the pin shaft 3 Pull out.

To sum up, the utility model has the advantages of simple structure and convenient operation, easy to manufacture, economical and practical, and stable performance. The utility model can save manpower and material resources in the maintenance process, greatly reduce the impact time of equipment, and improve maintenance efficiency , It reduces the labor intensity of workers and improves the utilization rate of equipment.

Claims (3)

1. A new type of pin puller, characterized in that it includes a beam (1) and two screw rods (2), and the two screw rods (2) are symmetrically arranged at both ends of the beam (1) and threaded with the beam (1) , the middle part of the beam (1) is provided with a threaded hole that is threadedly matched with the upper part of the pin shaft (3) to be replaced. 2. The new pin puller according to claim 1, characterized in that: a sleeve (4) is provided in the threaded hole in the middle of the beam (1), and a blind hole (7) is provided at the lower end of the sleeve (4) ), the blind hole (7) is provided with an internal thread that matches the upper thread of the pin shaft (3) to be replaced. 3. The new pin puller according to claim 2, characterized in that: the sleeve (4) and the top of the screw are provided with a nut (5), and the sleeve (4) is peripherally connected with the beam (1 ) The external thread matched with the threaded hole in the middle.