Ejector rod roller way height adjusting device

Abstract

An ejector rod roller way height adjusting device comprises an adjusting shaft, one end of the adjusting shaft is fixed to a driving shaft of a hydraulic rotating oil cylinder, the adjusting shaft fixes a sleeve through a connecting rod, the adjusting shaft and the sleeve are arranged in parallel, a rotating shaft penetrates through the sleeve and is rotationally connected with the sleeve, and the front end of the rotating shaft extends out of the sleeve and fixes a roller. The rear end of the rotating shaft is hinged to one end of a cross shaft type universal sliding coupling, and the other end of the cross shaft type universal sliding coupling is hinged to an output shaft of a motor. Compared with the prior art, the device has the technical effects that the device is provided with the oil cylinder, the height of the roller can be adjusted by adjusting the rotation of the shaft, and the device is relatively convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of rolled seamless steel pipe, specifically relating to a top rod roller height adjustment device. Background Technology

[0002] In the process of rolling (hot rolling) seamless steel pipes, a mandrel is used to roll the solid billet. During rolling, the mandrel remains stationary while the solid billet gradually approaches the mandrel. After each rolling cycle, the mandrel needs to be retracted to cool down using water spray. After cooling, the mandrel moves forward again for rolling. The mandrel is placed on a roller table and moves through the static friction of the rollers.

[0003] During the rolling process, the rolling center is always in the standard position, and the center of the push rod needs to be aligned with the rolling center.

[0004] The technical problem is that different types of solid tube blanks require ejector pins of different thicknesses. When the ejector pin is changed, the height of the roller needs to be adjusted (if a thicker ejector pin is used, the lowest point of the lower surface of the ejector pin will be lower, and the height of the roller needs to be reduced). Currently, adjusting the height of the roller is difficult. Utility Model Content

[0005] The technical problem this invention aims to solve is: how to design a height adjustment device for a top rod roller conveyor to facilitate the adjustment of the roller height.

[0006] The specific technical solution of this utility model is as follows:

[0007] A height adjustment device for a top rod roller conveyor includes an adjusting shaft. One end of the adjusting shaft is fixed to the drive shaft of a hydraulic rotary cylinder. The adjusting shaft is fixed to a sleeve via a connecting rod. The adjusting shaft and the sleeve are arranged parallel to each other. A rotating shaft passes through the sleeve and is rotatably connected to the sleeve. The front end of the rotating shaft extends outside the sleeve and fixes a roller. The rear end of the rotating shaft is hinged to one end of a cross-shaft universal sliding coupling. The other end of the cross-shaft universal sliding coupling is hinged to the output shaft of a motor.

[0008] There are two connecting rods, which are welded and fixed to the adjusting shaft and sleeve.

[0009] Compared with the prior art, the technical advantage of this utility model is that it is equipped with a hydraulic cylinder, and the height of the roller can be adjusted by adjusting the rotation of the shaft, which is more convenient. Attached Figure Description

[0010] Figure 1 This is a top view of the present invention.

[0011] Figure 2 This is a left-side view of the present invention.

[0012] Figure 3This is a schematic diagram (a) of the utility model in use.

[0013] Figure 4 This is a schematic diagram (II) of the utility model in use. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figure 1-2 A top rod roller height adjustment device includes an adjustment shaft 10, one end of which is fixed to the drive shaft of a hydraulic rotary cylinder 11. The adjustment shaft 10 is fixed to a sleeve 20 via a connecting rod 12. The adjustment shaft 10 and the sleeve 20 are arranged parallel to each other.

[0016] A rotating shaft 21 is inserted inside the sleeve 20. The rotating shaft 21 is rotatably connected to the sleeve 20. The front end of the rotating shaft 21 extends outside the sleeve 20 and fixes the roller 30. The rear end of the rotating shaft 21 is hinged to one end of a cross-shaft universal sliding coupling 22. The other end of the cross-shaft universal sliding coupling 22 is hinged to the output shaft of the motor 23.

[0017] For universal sliding couplings of the cross shaft type, please refer to the universal coupling in patent document CN221762474U.

[0018] For secure connection, there are two connecting rods 12, which are welded and fixed to the adjusting shaft 10 and the sleeve 20.

[0019] Its working principle is as follows:

[0020] Features of this application:

[0021] During installation:

[0022] like Figure 1-4 The hydraulic rotary cylinder 11 and the motor 23 are fixed on the frame, and the adjusting shaft 10 is rotatably connected to the frame.

[0023] When adjusting the height of the roller by 90 degrees:

[0024] like Figure 3 Now, the roughing ejector pin 91 is used, and the axis of the roughing ejector pin 91 is at the rolling center line 99. For example... Figure 4 If it needs to be adjusted to a thinner push rod 92, the lowest position of the lower surface of the thinner push rod 92 will be lower, and the height of the roller needs to be increased. To this end, the rotary cylinder 11 is rotated counterclockwise, and the adjusting shaft 10, connecting rod 12, sleeve 20, rotating shaft 21 and fixed roller 30 also rotate synchronously with the axis of the adjusting shaft 10 as the rotation center, and the height of the roller is increased.

[0025] In this way, the positions of the rotating shaft 21 and the motor 23 are changed, but they can be adjusted adaptively using the cross-type universal sliding coupling 22 without affecting the rotation.

[0026] During normal use: the motor 23 rotates, and under the support of the sleeve 20, the drive shaft 21 and the fixed roller 30 also rotate synchronously. The push rod 90 is placed on the roller 30 and moves through the static friction of the roller 30, which does not affect the operation of the push rod.

[0027] For other details, please refer to the existing technology.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A top rod roller conveyor height adjustment device, comprising an adjustment shaft (10), characterized in that: One end of the adjusting shaft (10) is fixed to the drive shaft of the hydraulic rotary cylinder (11). The adjusting shaft (10) is fixed to the sleeve (20) through the connecting rod (12). The adjusting shaft (10) and the sleeve (20) are arranged in parallel. A rotating shaft (21) is inserted inside the sleeve (20). The rotating shaft (21) is rotatably connected to the sleeve (20). The front end of the rotating shaft (21) extends outside the sleeve (20) and fixes the roller (30). The rear end of the rotating shaft (21) is hinged to one end of the cross-shaft universal sliding coupling (22). The other end of the cross-shaft universal sliding coupling (22) is hinged to the output shaft of the motor (23).

2. The top rod roller height adjustment device as described in claim 1, characterized in that: There are two connecting rods (12), which are welded and fixed to the adjusting shaft (10) and the sleeve (20).

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