Center device

Abstract

The invention discloses a center device, which relates to an oil cylinder piston rod and is characterized in that a disc spring base plate, a disc spring and a center body are sequentially arranged in the front of the piston rod from inside to outside, a bearing seat is sequentially arranged in the center body, a bearing assembly is arranged in front of the bearing seat, and a center rotating shaft and a small center are arranged in the bearing; a center seat and an annular spring inner ring are sequentially arranged on the end face of the piston rod, an annular spring outer ring is arranged outside the annular spring inner ring, an outer pressing ring and an inner pressing ring are arranged in front of the two annular springs, a pressing cover is arranged in the inner pressing ring, and an annular cover is arranged outside the two annular springs. And a transition sleeve steel inner sleeve is matched with the center device. The center device has the advantages that all functions of an existing center device are achieved, the transition sleeve steel inner sleeve abuts against the shaft shoulder to share part of pressure, the shaft end can be prevented from being thickened, and meanwhile, due to the fact that one end of the transition sleeve steel inner sleeve abuts against the shaft shoulder and the other end of the transition sleeve steel inner sleeve serves as the measuring basis, the wheel position difference is measured according to the gauge.

Description

Technical Field

[0001] The present invention relates to a kind of equipment machinery for rail transportation, in particular to a top device. Background Art

[0002] The existing top-end devices are generally used to hold the axle end face of the wheelset for assembly and disassembly of the wheelset. In the process of pressing the axle end face, it is difficult to avoid the roughness of the axle end; secondly, the wheel position difference cannot be measured according to the regulations. The measurement method of the existing wheelset press machine is to measure the difference in the distance of the inner side of the wheel based on the end faces of the two ends of the axle. The measurement result of this method includes the manufacturing tolerance of the axle journal length, and the measurement error is large. The verification rules and standards after the wheelset is pressed are that the wheel position difference is the difference in the distance from the two axle shoulders to the inner side of the wheel, and the wheel position difference of the wheelset is measured based on the axle shoulders. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the present invention provides a top device, which not only has the functions of the prior art top device, but also can prevent the shaft end from being thickened, and can also measure the wheel position difference according to the regulations.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is a top device, which relates to a cylinder piston rod, wherein a disc spring pad, a disc spring, a top body are arranged in sequence from the inside to the outside in front of the piston rod, a bearing seat is arranged in sequence in the top body, a bearing assembly is arranged in front of the bearing seat, and a top rotating shaft and a small top are arranged in the bearing; a top seat, an annular spring inner ring, an annular spring outer ring is arranged outside the annular spring inner ring, an outer pressure ring and an inner pressure ring are arranged in front of the two annular springs, a pressure cover is arranged in the inner pressure ring, and a ring cover is arranged outside the two annular springs; Comes with a transition sleeve steel inner sleeve to match the top device.

[0005] The transition sleeve steel inner sleeve is provided with a transition sleeve nylon outer sleeve outside.

[0006] The bearing assembly comprises a bearing, a bearing outer ring retaining ring, a bearing inner ring retaining ring and a bearing pressure cover.

[0007] The beneficial effect of the present invention is that it not only has all the functions of the existing top device, but also because the steel inner sleeve of the transition sleeve presses against the shaft shoulder to share part of the pressure, it can avoid the roughness of the shaft end. At the same time, because one end of the steel inner sleeve of the transition sleeve presses against the shaft shoulder and the other end is used as a measurement reference, the wheel position difference can be measured according to the regulations. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the present invention.

[0009] Figure 2 It is the current measurement reference surface diagram.

[0010] Figure 3It is the measurement reference surface diagram of the present invention.

[0011] In the figure: 100 A top device; 01 Cylinder piston rod, 1 Disc spring pad, 2 Disc spring, 3 Top body, 4 Bearing seat, 5 Bearing assembly, 51 Bearing, 52 Bearing outer ring retaining ring, 53 Bearing inner ring retaining ring, 54 Bearing gland; 6 Top shaft, 7 Small top, 8 Top seat, 9 Ring spring inner ring, 10 Ring spring outer ring, 11 Outer pressure ring, 12 Inner pressure ring, 13 Gland, 14 Ring cover; 02 Transition sleeve steel inner sleeve; 03 transitional nylon jacket; 04Axle. DETAILED DESCRIPTION

[0012] The embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0013] like Figures 1 to 3 As shown, the present invention discloses a top device 100, which involves a cylinder piston rod 01, in front of the piston rod from the inside to the outside in sequence ( Figure 1 From left to right in the middle) there are disc spring pad 1, disc spring 2, top body 3, bearing seat 4 is arranged in the top body in sequence, bearing assembly 5 is arranged in front of the bearing seat, top shaft 6 and small top 7 are arranged in the bearing; in front of the piston rod end ( Figure 1 From left to right in the middle, there are successively provided with a top seat 8, an annular spring inner ring 9, an annular spring outer ring 10 mounted outside the annular spring inner ring, an outer pressure ring 11 and an inner pressure ring 12 are arranged in front of the two annular springs, a pressure cover 13 is arranged inside the inner pressure ring, and an annular cover 14 is arranged outside the two annular springs; The annular spring ensures a pre-compression amount of about 3 mm and carries a force of about 150 kN; when the outer ring force is greater than 150 kN, the annular spring begins to compress. When the annular spring is compressed by about 5 mm and carries a force of about 250 kN, the inner pressure ring begins to press the end face of the axle to bear the force, enabling the shaft shoulder to withstand a press-fitting force of about 250 kN, reducing the press-fitting force on the shaft end by about 250 kN, and avoiding the shaft end being rough.

[0014] The top device is equipped with a transition sleeve steel inner sleeve 02. When this transition sleeve steel inner sleeve is used, the pointed pair is against the axle shoulder, and the other end is facing the top device as the measurement reference surface. The distance from this surface to the inner side of the wheel is measured, and the length of the transition sleeve steel inner sleeve is subtracted, which is the wheel position difference, avoiding the manufacturing tolerance of the axle journal length.

[0015] The transition sleeve steel inner sleeve is provided with a transition sleeve nylon outer sleeve 03 outside to prevent the wheel from being damaged by contact with the steel.

[0016] The described bearing assembly includes a bearing 51, an outer bearing ring retaining ring 52, an inner bearing ring retaining ring 53, and a bearing gland 54.

[0017] The above is only one of the embodiments of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A top device, which relates to a cylinder piston rod, characterized in that: In front of the piston rod, from the inside to the outside, there are disc spring pads, disc springs, and a top body. In the top body, there are bearing seats, a bearing assembly in front of the bearing seat, and a top shaft and a small top in the bearing; in front of the piston rod end, there are top seats, an annular spring inner ring, an annular spring outer ring outside the annular spring inner ring, an outer pressure ring and an inner pressure ring in front of the two annular springs, a pressure cover inside the inner pressure ring, and ring covers outside the two annular springs; a transition sleeve steel inner sleeve is provided with the top device.

2. A tip device as claimed in claim 1, characterized in that: The transition sleeve steel inner sleeve is provided with a transition sleeve nylon outer sleeve outside.

3. A tip device as claimed in claim 1, characterized in that: The bearing assembly comprises a bearing, a bearing outer ring retaining ring, a bearing inner ring retaining ring and a bearing pressure cover.

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