CN214689534U

CN214689534U - Rail inspection trolley

Info

Publication number: CN214689534U
Application number: CN202120788965.7U
Authority: CN
Inventors: 陶捷; 朱洪涛
Original assignee: Jiangxi Everbright Measurement And Control Technology Co ltd
Current assignee: Jiangxi Everbright Measurement And Control Technology Co ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-12
Anticipated expiration: 2031-04-16

Abstract

The utility model provides a dolly is examined to rail, including the roof beam body, and locate a plurality of horizontal straining device at roof beam body both ends, horizontal straining device includes base member, first wheelset, spring and guide shaft, the base member include the base and with base sliding connection's slider, first wheelset includes the first support of being connected with the bottom of slider, install first gyro wheel and first straining wheel on first support, on the guide shaft is fixed in the base, the top of slider cup joints with the guide shaft slides, spring coupling base and slider and order about towards the tensioning direction of first straining wheel the slider to make first straining wheel tensioning rail medial surface. The utility model discloses a set up the slider and make slider and base sliding connection to set up the guide shaft and lead to the slip of slider, lead to the horizontal concertina movement to first tensioning wheel, improve the stability of first tensioning wheel tensioning rail, thereby reliable measurement gesture that keeps the rail and examine the dolly, and then improve the measurement accuracy that the dolly was examined to the rail.

Description

Rail inspection trolley

Technical Field

The utility model relates to a track detects technical field, in particular to dolly is examined to rail.

Background

With the rapid development of railway industry in China, the train operation speed is continuously improved, the precision requirement on the measurement and control of the geometric parameters of the railway track is higher and higher, and thus the rail inspection trolley for measuring the geometric parameters of the railway track needs higher measurement precision.

In order to ensure that the rail inspection trolley has high measurement precision, the measurement attitude of the rail inspection trolley must be ensured, namely, the first tensioning wheels at the two ends of the rail inspection trolley are outwards opened and always kept in close contact with the inner side surfaces of the left and right steel rails so as to keep the transverse movement attitude of the measurement trolley.

In the prior art, a tensioning spring is directly used for acting on a first tensioning wheel at present to push the first tensioning wheel outwards, so that the first tensioning wheel is expanded outwards and is always kept in close contact with the inner side surface of a steel rail. However, the reliability of the rail inspection trolley for maintaining the measurement posture is poor, and the tensioning mode cannot meet the use requirement when the high-precision measurement requirement is met.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a dolly is examined to rail to solve current dolly is examined and keep the relatively poor technical problem of reliability of measuring the gesture to rail.

According to the embodiment of the utility model, a rail inspection trolley comprises a beam body and a plurality of transverse tensioning mechanisms arranged at two ends of the beam body, wherein each transverse tensioning mechanism comprises a base body connected with the beam body, a first wheel set arranged on the base body, a spring connected with the base body and a guide shaft for guiding the first wheel set, the base body comprises a base fixed on the beam body and a sliding block slidably connected with the base, the first wheel set comprises a first support connected with the bottom of the sliding block, a first roller arranged on the first support and walking on the top surface of a steel rail and a first tensioning wheel arranged on the first support and walking along the inner side surface of the steel rail, the guide shaft is fixed on the base, the top of the sliding block is slidably sleeved with the guide shaft, the spring is connected with the base and the sliding block and drives the sliding block towards the tensioning direction of the first tensioning wheel, so that the first tensioning wheel tensions the inner side of the rail.

Furthermore, the number of the springs is two, and the two springs are respectively arranged on two sides of the sliding block.

Further, the spring is a tension spring and is used for pulling the sliding block to move towards the tensioning direction of the first tensioning wheel.

Furthermore, a first connecting portion extends from the side wall of the slider, a second connecting portion extends from the front end of the base, one end of the spring is connected with the first connecting portion, and the other end of the spring is connected with the second connecting portion.

Furthermore, the beam body comprises a girder and a side arm arranged at one end of the girder, and two ends of the girder are respectively provided with the transverse tensioning mechanism.

Furthermore, the girder is of a hollow structure, and the spring, the guide shaft and the base body are all accommodated in the hollow of the girder.

Furthermore, the middle part of the side arm is connected with the end part of the girder, and the two ends of the side arm are provided with second wheel sets.

Further, the second wheel set comprises a second support fixedly arranged on the side arm, a second roller wheel arranged on the second support and walking on the top surface of the steel rail, and a second tensioning wheel arranged on the second support and walking along the inner side surface of the steel rail.

Furthermore, the first wheel set further comprises two gap passing wheels, the gap passing wheels are mounted on the first support and located on two sides of the moving direction of the first tensioning wheel, and the distance between the gap passing wheels and the inner side face of the steel rail is larger than the distance between the first tensioning wheel and the inner side face of the steel rail.

Furthermore, the first wheel set further comprises two protection wheels, the protection wheels are mounted on the first support and located on two sides of the first roller in the moving direction, and the distance between each protection wheel and the top surface of the steel rail is larger than the distance between each first roller and the top surface of the steel rail.

Compared with the prior art, the rail inspection trolley has the advantages that the sliding block is arranged, the sliding block is connected with the base in a sliding mode, the guide shaft is arranged to guide the sliding of the sliding block, so that the transverse telescopic motion of the first tensioning wheel is guided, the stability of the first tensioning wheel for tensioning the steel rail is improved, the measurement posture of the rail inspection trolley is reliably kept, and the measurement accuracy of the rail inspection trolley is further improved.

Drawings

Fig. 1 is a schematic front view of a rail inspection trolley according to a first embodiment of the present invention;

fig. 2 is a schematic top view of the rail inspection trolley according to the first embodiment of the present invention;

fig. 3 is a schematic right-view structural diagram of the rail inspection trolley in the first embodiment of the present invention;

FIG. 4 is an enlarged view taken at A in FIG. 1;

fig. 5 is a schematic perspective view of a lateral tensioning mechanism according to a first embodiment of the present invention;

fig. 6 is a schematic perspective view of a lateral tensioning mechanism according to a second embodiment of the present invention;

fig. 7 is a schematic side view of a lateral tensioning mechanism according to a second embodiment of the present invention.

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, a rail inspection trolley according to a first embodiment of the present invention is shown, including a beam body 10 and a plurality of transverse tensioning mechanisms 20 disposed at two ends of the beam body 10, in this embodiment, the beam body 10 is T-shaped, i.e., a T-shaped beam is adopted, the beam body 10 specifically includes a girder 11 and a side arm 12 vertically disposed at one end of the girder 11, the middle portion of the side arm 12 is connected with an end portion of the girder 11, wherein two ends of the girder 11 are respectively disposed with one transverse tensioning mechanism 20.

Referring to fig. 5, the transversal tensioning mechanism 20 includes a base 21 connected to the beam 10, a first wheel set 22 mounted on the base 21, a spring connected to the base 21, and a guide shaft 24 guiding the first wheel set 22, the base 21 includes a base 211 fixed to the beam 10 and a slider 212 slidably connected to the base 211, the sliding direction of the slider 212 is perpendicular to the rail, i.e. to ensure that the sliding direction of the sliding block 212 is the same as the tensioning direction of the subsequent first tensioning wheel, the first wheel set 22 comprises a first support 221 connected with the bottom of the sliding block 212, a first roller 222 mounted on the first support 221 and running on the top surface of the steel rail (the top surface of the steel rail), and a first tensioning wheel 223 mounted on the first support 221 and running against the inner side surface of the steel rail, so that the first tensioning wheel 223, the first roller 222 and the slider 212 perform a transverse (perpendicular to the rail) telescopic motion together. The guide shaft 24 is fixed on the base 211, and the top of the sliding block 212 is slidably sleeved with the guide shaft 24, so that the guide shaft 24 is used for accurately guiding the transverse telescopic motion of the sliding block 212. The spring connects the base 211 and the slider 212 and drives the slider 212 in a tensioning direction of the first tensioning wheel 223 so that the first tensioning wheel 223 always tensions the inner side of the rail.

The number of the springs is two, that is, the embodiment adopts the double springs to ensure the tensioning effect of the first tensioning wheel 223, so that the first tensioning wheel 223 can stably and reliably tension the inner side surface of the steel rail. Specifically, two springs are respectively arranged on both sides of the slider 212, that is, the slider 212 is symmetrically pulled from both sides, so that the traversing precision of the slider 212 is improved, and the sliding abrasion of the slider 212 with the guide shaft 24 and the base 211 is reduced. Specifically, in some cases of the present embodiment, the spring is a tension spring for pulling the slider 212 to move toward the tensioning direction of the first tensioning wheel 223. In order to fix the spring, a first connection portion 231 extends from a side wall of the slider 212, a second connection portion 232 extends from a front end of the base 211, and one end of the spring is connected to the first connection portion 231 while the other end is connected to the second connection portion 232.

In order to improve the overall appearance of the rail inspection trolley, as shown in fig. 1 to 3, the girder 11 is provided as a hollow structure, and the spring, the guide shaft 24 and the base body 21 are accommodated in the hollow of the girder 11. Meanwhile, the sliding block 212, the spring, the guide shaft 24 and the like are hidden inside the girder 11, so that the guide structures can be well protected, the influence of dust is avoided, and the precision and the service life are ensured.

In addition, in order to ensure better balance of the rail inspection trolley, as shown in fig. 1 to 4, the two ends of the side arm 12 are provided with a second wheel set 30. The second wheel set 30 includes a second support 31 fixed on the side arm 12, a second roller 32 mounted on the second support 31 and running on the top surface of the rail, and a second tension wheel 33 mounted on the second support 31 and running against the inner side surface of the rail. The second tensioning wheel 33 has the same action as the first tensioning wheel 223, and is used for tensioning the inner side surface of the steel rail and rolling on the inner side surface of the steel rail so as to ensure the posture of the rail inspection trolley, and the difference is that the first tensioning wheel 223 can do transverse telescopic motion, and the second tensioning wheel 33 cannot do transverse telescopic motion. Meanwhile, the second roller 32 and the first roller 222 have the same function and are both used for rolling on the top surface of the steel rail, so that the rail inspection trolley can better stand on the rail to run.

During the in-service use, when the roof beam body 10 erects on the track, the first wheelset 22 at girder 11 both ends and the second wheelset 30 at side arm 12 both ends respectively with the left and right sides rail contact, first gyro wheel 222 and second gyro wheel 32 are set up respectively on respective rail top surface this moment, make the rail inspection dolly can erect and walk on the track, first pinch roller 223 and first pinch roller 223 tensioning rail medial surface respectively simultaneously, and roll at the rail medial surface along with the removal of rail inspection dolly, because there is the take-up pulley tensioning rail medial surface at roof beam body 10 both ends, add rail inspection dolly self action of gravity, thereby guarantee the horizontal measurement gesture of rail inspection dolly.

In addition, the rail inspection trolley also comprises a linear displacement sensor 40 which is connected with the sliding block 212 and measures the rail distance by acquiring the transverse telescopic displacement of the sliding block 212.

To sum up, in the rail inspection trolley in the embodiment, the sliding block 212 is arranged, the sliding block 212 is slidably connected with the base 211, the guide shaft 24 is arranged to guide the sliding of the sliding block 212, and further guide the transverse telescopic motion of the first tensioning wheel 223, so that the stability of tensioning the steel rail by the first tensioning wheel 223 is improved, the measurement posture of the rail inspection trolley is reliably maintained, and the measurement accuracy of the rail inspection trolley is further improved.

Referring to fig. 6 to 7, a rail inspection trolley according to a second embodiment of the present invention is shown, and the rail inspection trolley according to the present embodiment is different from the rail inspection trolley according to the first embodiment in that:

the first wheel set 22 further comprises two gap-crossing wheels 224, the gap-crossing wheels 224 are mounted on the first support 221 and located on two sides of the moving direction (the direction of the steel rail) of the first tension wheel 223, the distance between the gap-crossing wheels 224 and the inner side surface of the steel rail is greater than the distance between the first tension wheel 223 and the inner side surface of the steel rail, and the difference is preferably controlled to be 1-3mm, and is most preferably 2mm, so that during normal walking, the first tension wheel 223 rolls on the inner side surface of the steel rail, and the gap-crossing wheels 224 do not contact the inner side surface of the steel rail; when the first tensioning wheel 223 passes through the rail joint, the two gap-passing wheels 224 can be lapped on two sides of the joint, so that the depth of the first tensioning wheel 223 sinking into the joint is reduced, the clamping is reduced, the tensioning wheel is protected, and the two gap-passing wheels 224 walk on the inner side face of the steel rail until the first tensioning wheel 223 smoothly passes through the joint.

Similarly, the first wheel set 22 further comprises two protection wheels 225, the protection wheels 225 are mounted on the first support 221 and located on both sides of the moving direction of the first roller 222 (the direction of the steel rail), the distance between the protection wheels 225 and the top surface of the steel rail is greater than the distance between the first roller 222 and the top surface of the steel rail, and the difference is preferably controlled to be between 1 and 3mm, and most preferably 2mm, so that during normal walking, the first roller 222 rolls on the top surface of the steel rail, and the protection wheels 225 do not contact the top surface of the steel rail; when the first roller 222 passes through the rail joint, the two protection wheels 225 are lapped on two sides of the joint, so that the depth of the first roller 222 entering the joint is reduced, the clamping is reduced, the rollers are protected, and at the moment, the two protection wheels 225 run on the top surface of the steel rail until the first roller 222 smoothly passes through the joint. In other alternative embodiments, such protection wheels may be disposed on both sides of the second roller and the second tensioning wheel to protect the second roller and the second tensioning wheel from smoothly passing through the rail joints, pits, and the like.

It should be noted that the device provided in the present embodiment, the implementation principle and the generated technical effects are the same as the first embodiment of the present invention, and for the sake of brief description, the corresponding contents in the first embodiment of the present invention can be referred to where this embodiment is not mentioned.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A rail inspection trolley comprises a beam body and a plurality of transverse tensioning mechanisms arranged at two ends of the beam body, and is characterized in that each transverse tensioning mechanism comprises a base body connected with the beam body, a first wheel set arranged on the base body, a spring connected with the base body and a guide shaft for guiding the first wheel set, the base body comprises a base fixed on the beam body and a sliding block connected with the base in a sliding manner, each first wheel set comprises a first support connected with the bottom of the sliding block, a first roller arranged on the first support and walking on the top surface of a steel rail and a first tensioning wheel arranged on the first support and walking along the inner side surface of the steel rail, the guide shaft is fixed on the base, the top of the sliding block is in sliding sleeve connection with the guide shaft, the spring is connected with the base and the sliding block and drives the sliding block towards the tensioning direction of the first tensioning wheel, so that the first tensioning wheel tensions the inner side of the rail.

2. The rail inspection trolley according to claim 1, wherein the number of the springs is two, and the two springs are respectively arranged on two sides of the sliding block.

3. The rail inspection trolley of claim 2, wherein the spring is a tension spring for pulling the slider in a direction of tension of the first tension wheel.

4. The rail inspection trolley according to any one of claims 1 to 3, wherein a first connecting portion extends from a side wall of the slider, a second connecting portion extends from a front end of the base, and one end of the spring is connected to the first connecting portion while the other end of the spring is connected to the second connecting portion.

5. The rail inspection trolley according to claim 2, wherein the beam body comprises a girder and side arms provided at one end of the girder, and the two ends of the girder are respectively provided with the transverse tensioning mechanism.

6. The rail inspection trolley according to claim 5, wherein the girder is a hollow structure, and the spring, the guide shaft and the base are all accommodated in the hollow of the girder.

7. The rail inspection trolley according to claim 5, wherein the middle of the side arm is connected with the end of the girder, and the two ends of the side arm are provided with the second wheel set.

8. The rail inspection trolley according to claim 7, wherein the second set of wheels includes a second support base fixedly attached to the side arm, a second roller mounted to the second support base and running on the top surface of the rail, and a second tensioning wheel mounted to the second support base and running against the inside surface of the rail.

9. The rail inspection trolley according to claim 1, wherein the first wheel set further comprises two gap wheels, the gap wheels are mounted on the first support and located on two sides of the first tensioning wheel in the moving direction, and the distance between the gap wheels and the inner side face of the steel rail is larger than the distance between the first tensioning wheel and the inner side face of the steel rail.

10. The rail inspection trolley according to claim 1, wherein the first wheel set further comprises two protection wheels, the protection wheels are mounted on the first support and located on two sides of the first roller in the moving direction, and the distance between the protection wheels and the top surface of the steel rail is greater than the distance between the first roller and the top surface of the steel rail.