Rolling mill rotating hub bearing seat pin shaft drawing tool

Abstract

The utility model provides a rolling mill hub bearing seat pin shaft drawing tool which comprises a fixed support, a movable support is arranged above the fixed support, and the lower end of the movable support is fixedly connected with a pin shaft located in a rolling mill hub bearing seat. Compared with the prior art, the pin shaft drawing device has the advantages that the pin shaft can be quickly drawn, the operation is simple, the manpower is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of rolling mills, and in particular relates to a rolling mill hub pin shaft pulling device. Background Art

[0002] The rolling mill is a device used to roll steel pipes. The rolling mill includes a rolling mill hub, which includes an outlet bearing seat, an inlet bearing seat, and a rolling roller. The outlet bearing seat and the inlet bearing seat are connected by a fork arm. One side of the fork arm is connected to the inlet bearing seat by a pin, and the other end is fixed to the outlet bearing seat by a pin. After long-term use, the pin connecting the arm and the bearing seat will rust and be difficult to pull out. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a rolling mill wheel hub bearing seat pin shaft drawing tool.

[0004] The purpose of the utility model is achieved in the following ways:

[0005] A rolling mill hub bearing seat pin shaft drawing tool comprises a fixed bracket, a movable bracket arranged above the fixed bracket, and the lower end of the movable bracket is fixedly connected to the pin shaft located in the rolling mill hub bearing seat; an oil cylinder for driving the movable bracket to move is arranged between the movable bracket and the fixed bracket.

[0006] The described rolling mill hub bearing seat pin shaft drawing tool, the described fixed bracket includes a fixed bracket bottom plate for supporting the oil cylinder, and a fixed bracket top plate for resisting the hub rolling mill bearing seat is arranged on the fixed bracket bottom plate.

[0007] The described rolling mill hub bearing seat pin shaft drawing tool is characterized in that a movable bracket bottom plate is provided at one end of the movable bracket, and a metal rod is provided at the other end. An external thread is provided on the outside of the metal rod, and a nut matching the external thread is fixed on the pin shaft; the oil cylinder is provided between the fixed bracket bottom plate and the movable bracket bottom plate.

[0008] In the rolling mill hub bearing seat pin shaft drawing tool, hanging bolts are arranged on the outer walls of both sides of the oil cylinder.

[0009] Compared with the prior art, the utility model can realize the rapid pulling of the pin shaft, is easy to operate, saves manpower and increases work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a front view of the fixing bracket 1;

[0011] Figure 2 is a side view of the fixing bracket 1;

[0012] Figure 3 is the main view of the mobile bracket 2;

[0013] Figure 4 It is the front view of the utility model;

[0014] Figure 5 It is a side view of the utility model; DETAILED DESCRIPTION

[0015] like Figure 1-5 As shown, a rolling mill hub bearing seat pin drawing tool comprises a fixed bracket 1, a movable bracket 2 is arranged above the fixed bracket 1, and the lower end of the movable bracket 2 is fixedly connected to the pin 6 located in the rolling mill hub bearing seat 7; an oil cylinder 5 for driving the movable bracket 2 to move is arranged between the movable bracket 2 and the fixed bracket 1.

[0016] In the rolling mill hub bearing seat pin drawing tool, the fixed bracket 1 includes a fixed bracket bottom plate 11 for supporting the oil cylinder 5, and a fixed bracket top plate 12 for resisting the hub rolling mill bearing seat 7 is arranged on the fixed bracket bottom plate 11.

[0017] The rolling mill hub bearing seat pin drawing tool is described, wherein a movable bracket bottom plate 21 is provided at one end of the movable bracket 2, and a metal rod 22 is provided at the other end. The metal rod 22 is provided with an external thread, and a nut 4 matching the external thread is fixed on the pin 6; the oil cylinder 5 is arranged between the fixed bracket bottom plate 11 and the movable bracket bottom plate 21.

[0018] In the rolling mill hub bearing seat pin drawing tool, hanging bolts 51 are arranged on the outer walls of both sides of the oil cylinder 5.

[0019] Its working principle is as follows: nut 4 is welded to the upper surface of the exposed end of pin shaft 6, metal rod 22 is threadedly connected to nut 4, oil cylinder 5 is placed between the bottom plate 21 of mobile support and the bottom plate 11 of fixed support, and top plate 12 of fixed support abuts against the outside of bearing seat 7. When oil cylinder 5 is started, since top plate 12 of fixed support abuts against bearing seat 7, the fixed seat cannot move downward, and mobile support 2 can only move upward, and metal rod 22 drives pin shaft 6 to move upward, and pin shaft 6 is pulled out. Oil cylinder is heavy and shakes at high places, and one end of rope is fixedly connected to the suspension bolt, and the other end is fixed above the tooling. The rope can bear part of the weight of the oil cylinder to prevent the device from tipping over.

[0020] The method of using the utility model is as follows:

[0021] S1. Weld the nut 4 to the upper surface of the pin 6, and tighten the external thread of the metal rod 22 of the mobile bracket 2 to the nut 4.

[0022] S2. Place the fixed bracket 1 on the bearing seat 7, with the fixed bracket top plate 12 at the bottom and the fixed bracket bottom plate 11 at the top. The two fixed bracket top plates are located on both sides of the metal rod 22 and against the bearing seat 7.

[0023] S3. Place the oil cylinder 5 on the fixed support bottom plate 11 so that the oil cylinder 5 is located between the fixed support bottom plate 11 and the movable support bottom plate 21. Tie one end of the rope to the suspension nut 51 and fix the other end at a high place to prevent the oil cylinder 5 from tipping over during the pulling process.

[0024] S4, start the oil cylinder 5, the distance between the fixed bracket bottom plate 11 and the movable bracket bottom plate 21 increases, because the fixed bracket 1 is fixed, only the movable bracket 2 can rise, and the nut 4 is welded on the pin 6, and the metal rod 22 is threadedly connected with the nut 4, so when the movable bracket 2 rises, it will drive the pin 6 to rise together, so that the pin 6 is pulled out.

[0025] Features of this utility model:

[0026] The bracket 1 is moved upward by the oil cylinder 5, so that the metal rod 22 drives the nut 4 and the pin 6 welded with the nut 4 to move upward, and the pin 6 is pulled out. The operation is simple, time-saving and labor-saving.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. A rolling mill hub bearing seat pin drawing tool, comprising a fixing bracket (1), characterized in that: A movable bracket (2) is arranged above the fixed bracket (1), and the lower end of the movable bracket (2) is fixedly connected to a pin shaft (6) located in a rolling mill hub bearing seat (7); an oil cylinder (5) for driving the movable bracket (2) to move is arranged between the movable bracket (2) and the fixed bracket (1); The fixed support (1) comprises a fixed support bottom plate (11) for supporting the oil cylinder (5), and a fixed support top plate (12) for abutting against a bearing seat (7) of a hub rolling mill is arranged on the fixed support bottom plate (11); A movable bracket bottom plate (21) is arranged at one end of the movable bracket (2), and a metal rod (22) is arranged at the other end. The metal rod (22) is provided with an external thread, and a nut (4) matching the external thread is fixed on the pin shaft (6); the oil cylinder (5) is arranged between the fixed bracket bottom plate (11) and the movable bracket bottom plate (21).

2. A rolling mill hub bearing seat pin drawing tool as claimed in claim 1, characterized in that: Suspension bolts (51) are provided on the outer walls of both sides of the oil cylinder (5).

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