CN216975622U

CN216975622U - Spring structure and rail detector

Info

Publication number: CN216975622U
Application number: CN202220165277.XU
Authority: CN
Inventors: 杨富炜; 刘毅; 邓勇杰
Original assignee: Guangzhou Datie Ruiwei Technology Co ltd
Current assignee: Guangzhou Datie Ruiwei Technology Co ltd
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-07-15
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses a spring structure and a rail detector, relating to the technical field of rail detectors, wherein the spring structure comprises: a central shaft; the bearing assembly comprises a linear bearing and a bearing seat, the bearing seat is arranged at one end of the central shaft, the linear bearing is arranged on the bearing seat, the linear bearing is sleeved on the central shaft, and the bearing seat is used for being connected with the outside; the insulating sleeve is fixed at the other end of the central shaft and is used for being connected with a measuring component of the rail detector; and the mechanical spring is sleeved on the central shaft and is positioned between the linear bearing and the insulating sleeve. The mechanical spring can keep good mechanical property at different environmental temperatures, thereby being beneficial to reducing the influence of the environmental temperature on the working performance of the spring structure and ensuring that the spring structure can provide enough elasticity for the measuring assembly; in addition, the linear bearing is matched with the central shaft, and has the characteristics of small friction and high sensitivity.

Description

Spring structure and rail detector

Technical Field

The utility model relates to the technical field of rail detection instruments, in particular to a spring structure and a rail detection instrument.

Background

In the related art, the rail detector uses an industrial gas spring as a force application device, and the gas spring has a significant defect of being greatly influenced by temperature. In the low temperature environment in winter, the phenomenon that elasticity is obviously reduced, the gas is lost can appear in the air spring, leads to the rail appearance to appear "derail" the condition in the pushing process. Therefore, how to ensure that the rail detector always correctly contacts with the rail in a complex working environment to avoid the derailment problem is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a spring structure which can effectively avoid the situation that the elasticity is obviously changed due to the environmental temperature.

The utility model also provides a rail detector with the spring structure.

A spring structure according to an embodiment of an aspect of the present invention includes: a central shaft; the bearing assembly comprises a linear bearing and a bearing seat, the bearing seat is arranged at one end of the central shaft, the linear bearing is arranged on the bearing seat, the linear bearing is sleeved on the central shaft, and the bearing seat is used for being connected with the outside; the insulating sleeve is fixed at the other end of the central shaft and is used for being connected with a measuring component of the rail detector; and the mechanical spring is sleeved on the central shaft and is positioned between the linear bearing and the insulating sleeve.

The spring structure of the embodiment has at least the following technical effects: the mechanical spring can keep good mechanical property at different environmental temperatures, thereby being beneficial to reducing the influence of the environmental temperature on the working performance of the spring structure and ensuring that the spring structure can provide enough elasticity for the measuring assembly; in addition, the linear bearing is matched with the central shaft, has the characteristics of small friction and high sensitivity, and can ensure the stable movement of the central shaft, thereby ensuring the stability of the movement of the measuring assembly.

In some embodiments, the bearing assembly further includes a first end cap sleeved on the central shaft, and the first end cap is located on a side of the linear bearing away from the mechanical spring.

In some embodiments, the central shaft includes a first support rod and a second support rod, the diameter of the first support rod is smaller than the diameter of the second support rod, the first end cap is sleeved on the first support rod, and the first end cap is fixed to the first support rod through a fastener.

In some embodiments, the bearing assembly further includes a second end cap sleeved on the central shaft, the second end cap is located on a side of the linear bearing close to the mechanical spring, and the second end cap has a slot through hole for the central shaft to pass through.

In some embodiments, the second end cap includes a base plate and an annular protrusion disposed along an outer periphery of the base plate, the protrusion extending in an axial direction of the central shaft, and the linear bearing is at least partially located in a receiving cavity formed by the protrusion.

In some embodiments, the bearing assembly further includes a sleeve, the sleeve is disposed on the central shaft and located between the mechanical spring and the central shaft, and one end of the sleeve abuts against the second end cap.

In some embodiments, the bushing includes a base and a flange connected to an end of the base, the flange being located on a side adjacent to the second end cap.

In some embodiments, the sleeve is made of plastic.

In some embodiments, the insulating sleeve has a mounting slot for coupling with the measurement assembly.

In some embodiments, the bearing assembly further comprises a circlip for shaft, and the outer circumference of the linear bearing is provided with a shaft groove for mounting the circlip for shaft.

The rail detector of another embodiment of the utility model has the spring structure.

The rail detection instrument provided by the embodiment of the utility model at least has the following beneficial effects: the central shaft is provided with a shaft sleeve assembly, an insulating sleeve and a mechanical spring, the central shaft is arranged on the rail detector through a bearing seat, and the insulating sleeve is fixedly connected with the measuring assembly. In the operating state, the mechanical spring handles the compressed state. The central shaft can move relative to the linear bearing, and when the insulating sleeve is acted by external force from the measuring assembly, the insulating sleeve can drive the measuring assembly to move in the direction close to the linear bearing; when the supporting force provided by the rail for the measuring assembly is reduced, the insulating sleeve and the measuring assembly move in the direction close to the rail under the action of the mechanical spring, so that the measuring assembly can be always fully attached to the rail, and the derailment phenomenon is effectively avoided; the mechanical spring can keep good mechanical property at different environmental temperatures, thereby being beneficial to reducing the influence of the environmental temperature on the working performance of the spring structure and ensuring that the spring structure can provide enough elasticity for the measuring assembly; in addition, the linear bearing is matched with the central shaft, has the characteristics of small friction and high sensitivity, and can ensure the stable movement of the central shaft, thereby ensuring the stability of the movement of the measuring assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Aspects of the utility model will be further understood from the following detailed description when read in conjunction with the accompanying drawings. It should be emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of the various elements may be arbitrarily increased or reduced for clarity of discussion.

Wherein:

FIG. 1 is a schematic diagram of the overall structure of an embodiment of an aspect of the present invention;

FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;

FIG. 3 is a left side view of an embodiment of the present invention;

FIG. 4 is a schematic diagram of a spring structure and a measuring assembly according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a rail detector according to another embodiment of the present invention;

fig. 6 is an enlarged view of the structure of part B in fig. 5.

Reference numerals:

the measuring device comprises a track 1, a traveling wheel 2, a cross beam 3, a measuring assembly 4, a central shaft 11, a first support rod 111, a second support rod 112, a linear bearing 21, a shaft groove 210, a bearing seat 22, a mounting hole 220, a body 222, a mounting portion 221, a first end cover 23, a second end cover 24, a base plate 241, a protrusion 242, a shaft sleeve 25, a base 251, a flange 252, a shaft elastic check ring 26, a fastener 27, an insulating sleeve 30, a mounting groove 310 and a mechanical spring 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and simplification of the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 4, in one embodiment of the present invention, a spring structure is disclosed, which includes a central shaft 11, a bearing assembly, an insulating sleeve 30 and a mechanical spring 40.

Specifically, a shaft sleeve 25 assembly, an insulating sleeve 30 and a mechanical spring 40 are arranged on the central shaft 11, the central shaft 11 is mounted on the rail detector through a bearing seat 22, and the insulating sleeve 30 is fixedly connected with the measuring assembly 4. The bearing assembly comprises a linear bearing 21 and a bearing seat 22, the bearing seat 22 is arranged at one end of the central shaft 11, the linear bearing 21 is arranged on the bearing seat 22, the linear bearing 21 is sleeved on the central shaft 11, and the bearing seat 22 is used for being connected with the outside; the insulating sleeve 30 is fixed at the other end of the central shaft 11, and the insulating sleeve 30 is used for being connected with the measuring component 4 of the rail detector; the mechanical spring 40 is sleeved on the central shaft 11, and the mechanical spring 40 is located between the linear bearing 21 and the insulating sleeve 30.

In addition, the linear bearing 21 is matched with the central shaft 11, has the characteristics of small friction and high sensitivity, and can ensure that the central shaft 11 moves stably, thereby ensuring the moving stability of the measuring assembly 4.

In some embodiments, the bearing housing 22 includes a body 222 and a mounting portion 221, the body 222 mating with the central shaft 11, the mounting portion 221 for connection with an external device. In this embodiment, the mounting portion 221 has a plurality of mounting holes 220, and the bearing housing 22 is mounted to the rail gauge by bolts.

In some embodiments, the insulating sleeve 30 may be a connector made of an insulating material, such as rubber or plastic. Set up insulating cover 30 at the tip of center pin 11, make center pin 11 be connected with measuring component 4 through insulating cover 30 for have good insulating nature between the spring structure of measuring component 4 and this embodiment, take place electrically conductive condition when avoiding measuring component 4 mistake to touch track 1, be favorable to improving the security performance of spring structure.

In some embodiments, the bearing assembly further includes a first end cap 23 sleeved on the central shaft 11, and the first end cap 23 is located on a side of the linear bearing 21 away from the mechanical spring 40.

In this embodiment, the central shaft 11 includes a first supporting rod 111 and a second supporting rod 112, a diameter of the first supporting rod 111 is smaller than a diameter of the second supporting rod 112, the first end cap 23 is sleeved on the first supporting rod 111, and the first end cap 23 is fixed to the first supporting rod 111 through a fastening member 27. The configuration of the center shaft 11 includes two shaft members of different diameters so that the center shaft 11 presents a stepped shaft configuration to facilitate securing the first end cap 23 to the center shaft 11. In this embodiment, the fastening member 27 is a bolt, and one side of the first end cap 23 abuts against the end of the second support rod 112, and the other side abuts against the bolt, thereby achieving fixation.

It is noted that the abutment includes a direct abutment or an indirect abutment.

In some embodiments, the bearing assembly further includes a second end cap 24 sleeved on the central shaft 11, the second end cap 24 is located on a side of the linear bearing 21 close to the mechanical spring 40, and the second end cap 24 has a slot through hole for passing the central shaft 11. It will be appreciated that the slotted through hole is a clearance fit with the central shaft 11 to facilitate movement of the central shaft 11 relative to the linear bearing 21 and the second end cap 24.

In this embodiment, the second end cap 24 includes a base plate 241 and an annular protrusion 242 disposed along the outer periphery of the base plate 241, the protrusion 242 extends in the axial direction of the central shaft 11, and the linear bearing 21 is at least partially located in the receiving cavity formed by the protrusion 242. The end of the linear bearing 21 is embedded in the accommodating cavity of the second end cover 24, and can fix the second end cover 24, so as to avoid the situation that the second end cover 24 is in contact with the central shaft 11 cheaply in the subsequent work, and further the stable motion of the central shaft 11 is influenced.

In some embodiments, the bearing assembly further includes a sleeve 25, the sleeve 25 is disposed on the central shaft 11, the sleeve 25 is disposed between the mechanical spring 40 and the central shaft 11, and one end of the sleeve 25 abuts against the second end cap 24. The arrangement of the shaft sleeve 25 can prevent the mechanical spring 40 from directly contacting the central shaft 11 during the expansion and contraction process, thereby causing abrasion of the central shaft 11. The sleeve 25 serves to protect the central shaft 11.

In some embodiments, the sleeve 25 includes a base 251 and a flange 252 attached to one end of the base 251, the flange 252 being located on a side adjacent to the second end cap 24. In this embodiment, the two ends of the mechanical spring 40 are both provided with the shaft sleeves 25, the base 251 of each shaft sleeve 25 is sleeved on the central shaft 11, and the flanges 252 of the two shaft sleeves 25 are respectively abutted against the second end cover 24 and the insulating sleeve 30, so as to protect the central shaft 11. In this embodiment, the sleeve 25 is made of plastic.

In some embodiments, the bearing assembly further comprises a shaft circlip 26, and the outer circumference of the linear bearing 21 is provided with a shaft groove 210 for mounting the shaft circlip 26. In this embodiment, the two ends of the bearing seat 22 are both provided with the shaft grooves 210, and the two ends of the bearing seat 22 are both provided with the elastic retaining rings 26 for the shaft, so as to prevent the linear bearing 21 and the bearing seat 22 from moving relatively.

In some embodiments, the insulation sleeve 30 has a mounting groove 310, the mounting groove 310 is used for connecting with the measuring component 4, and the mounting groove 310 serves to position and fix the measuring component 4.

Referring to fig. 5 and 6, in another embodiment of the present invention, a rail detector is disclosed, which includes the spring structure as described above, and all technical effects of the spring structure are provided, and are not described herein again.

In some embodiments, referring to fig. 1 to 6, the rail detector further includes a traveling wheel 2, a beam 3 and a measuring assembly 4, one end of the measuring assembly 4 is fixedly connected to the traveling wheel 2, the other end of the measuring assembly 4 is fixedly connected to an insulating sleeve 30, and a bearing seat 22 of a spring structure is fixed to the beam 3. During operation, the rail detector is arranged on the rail 1, and the traveling wheels 2 are arranged on the rail 1. It should be understood that the rail detector is further provided with a limiting device (not shown in the figure), the limiting device is located on the inner side of the rail 1, and the limiting device is connected with the rail 1 in a sliding manner. Through setting up stop device to avoid walking wheel 2 to rush through track 1 and the condition of derailing.

In the operating state, the mechanical spring 40 handles the compressed state. The central shaft 11 can move relative to the linear bearing 21, and when the insulating sleeve 30 is subjected to an external force from the measuring assembly 4, the insulating sleeve 30 drives the measuring assembly 4 to move in a direction close to the linear bearing 21. When the supporting force that track 1 provided for measuring component 4 reduces, insulating cover 30 and measuring component 4 move along the direction that is close to track 1 under mechanical spring 40's effect to guaranteed that measuring component 4 can fully laminate with track 1 all the time, effectively avoided the phenomenon of derailing. The mechanical spring 40 can maintain good mechanical properties at different environmental temperatures, which is beneficial to reducing the influence of the environmental temperature on the working performance of the spring structure and ensures that the spring structure can provide enough elasticity for the measuring component 4.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. A spring structure, comprising:

a central shaft;

the bearing assembly comprises a linear bearing and a bearing seat, the bearing seat is arranged at one end of the central shaft, the linear bearing is arranged on the bearing seat, the linear bearing is sleeved on the central shaft, and the bearing seat is used for being connected with a rail detector;

the insulating sleeve is fixedly arranged at the other end of the central shaft and is used for being connected with a measuring component of the rail detector;

and the mechanical spring is sleeved on the central shaft and is positioned between the linear bearing and the insulating sleeve.

2. The spring structure of claim 1, wherein the bearing assembly further comprises a first end cap sleeved on the central shaft, the first end cap being located on a side of the linear bearing away from the mechanical spring.

3. The spring structure of claim 2, wherein the central shaft comprises a first strut and a second strut, the first strut has a smaller diameter than the second strut, the first end cap is disposed over the first strut, and the first end cap is secured to the first strut by a fastener.

4. The spring structure of claim 1 wherein the bearing assembly further comprises a second end cap disposed around the central shaft, the second end cap being disposed on a side of the linear bearing adjacent to the mechanical spring, the second end cap having a slotted through hole for the central shaft to pass through.

5. The spring structure of claim 4 wherein said second end cap includes a base plate and an annular boss disposed along an outer periphery of said base plate, said boss extending axially of said central shaft, said linear bearing being at least partially located within a receiving cavity formed by said boss.

6. The spring structure of claim 4, wherein the bearing assembly further comprises a bushing, the bushing is sleeved on the central shaft and located between the mechanical spring and the central shaft, and one end of the bushing abuts against the second end cap.

7. The spring structure of claim 6 wherein said boss includes a base and a flange connected to one end of said base, said flange being located on a side adjacent said second end cap.

8. The spring structure of claim 1, wherein the insulating sleeve has a mounting slot for connection with the measurement assembly.

9. The spring structure according to claim 1, wherein the bearing assembly further comprises a circlip for a shaft, and an outer circumference of the linear bearing is provided with a shaft groove for mounting the circlip for a shaft.

10. A rail detector comprising a spring structure according to any one of claims 1 to 9.