Assembly method of non-return device

Abstract

The invention discloses an assembly method of a non-return device and is characterized in that the non-return device comprises two side plates, a roller component, a connecting plate, an inner sealing ring and an inner sleeve, wherein the roller component is mounted between the two side plates, the two side plates are firstly sleeved on a mold and are welded together through spot welding, holes are drilled in the two side plates through drilling molds, and identical marks are marked on the positions of the drilled holes of the two side plates; the two side plates which are welded together are separated, the holes with the same marks on the two side plates are aligned, and the roller component is mounted between the two side plates; the two side plates with the roller component mounted therebetween are sleeved on a fixed shaft, and the flexibility of a cam in the roller component is detected; the inner sealing ring and the connecting plate are sequentially sleeved on the inner sleeve, and then the inner sleeve on which the inner sealing ring and the connecting plate are sleeved is sleeved on a part consisting of an arm plate and an outer sleeve; and finally, the roller component is sleeved between the outer sleeve and the inner sleeve, and the non-return device product is constructed. The non-return device employing the assembly method can be assembled quickly and conveniently, and the qualified rate is high.

Description

technical field [0001] The invention relates to a backstop, in particular to an assembly method of the backstop. Background technique [0002] The backstop is mainly composed of outer casing, arm plate, inner sleeve, side plate, roller assembly, bearing, connecting plate, end cover, outer sealing ring and inner sealing ring. At present, when assembling the backstop, the connecting plate Preheating with the bearing, put the connecting plate, bearing and inner sealing ring on the inner sleeve in sequence, and then put it into the component composed of the outer sleeve and the arm plate, and finally directly install the rolling bearing between the inner sleeve and the outer sleeve. The side plates of the subassembly, since the side plates are divided into two pieces, are punched separately when punching holes. Therefore, the errors generated during the punching will cause the corresponding holes on the two side plates to not be completely aligned. Install the upper roller assem...

AI Technical Summary

Problems solved by technology

[0002] The backstop is mainly composed of outer casing, arm plate, inner sleeve, side plate, roller assembly, bearing, connecting plate, end cover, outer sealing ring and inner sealing ring. At present, when assembling the backstop, the connecting plate Preheating with the bearing, put the connecting plate, bearing and inner sealing ring on the inner sleeve in sequence, and then put it into the component composed of the outer sleeve and the arm plate, and finally directly install the rolling bearing between the inner sleeve and the outer sleeve. The side plates of the subassembly, since the side plates are divided into two pieces, are punched separately when punching holes. Therefore, the errors generated during the punching will cause the corresponding holes on the two side plates to not be completely aligned. Install the upper roller assembly Finally, it is more difficult to put it into the inner sleeve, or even impossible to put it in. Even if it is put in, when the assembled backstop works, it will generate heat, especially the non-contact backstop, the temperature rise exceeds 30 degrees Celsius, it will be will damage the backstop

At this time, if the roller assembly is replaced, it is also very difficult to disengage the roller assembly from the inner sleeve

Therefore, the pass rate of the backstop assembled according to this method is not high. If a problem is found, it will be very time-consuming and laborious to replace the roller assembly in the backstop, which will result in a reduction in assembly efficiency.

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