阅读说明：本技术 一种轨检机构及轨检小车 (Rail inspection mechanism and rail inspection trolley ) 是由 陶捷 朱洪涛 于 2020-07-17 设计创作，主要内容包括：本发明提供一种轨检机构及轨检小车,轨检机构包括在轨面上行走的行走轮、以及独立设置的横向张紧组件及轨道测量组件,所述横向张紧组件包括抵靠钢轨侧面的活动张紧轮、以及与所述活动张紧轮连接的第一张紧弹簧,所述活动张紧轮在所述第一张紧弹簧提供的弹性张紧力的作用下张紧所述钢轨侧面,所述轨道测量组件为接触式轨距测量组件或非接触式轨距测量组件。本发明通过设置相互独立的横向张紧组件及轨道测量组件,有效解决了现有因轨道张紧和轨道测量共用一套机构导致地在选取张紧力时存在矛盾的问题。(The invention provides a rail inspection mechanism and a rail inspection trolley, wherein the rail inspection mechanism comprises a travelling wheel travelling on a rail surface, a transverse tensioning assembly and a rail measuring assembly which are independently arranged, the transverse tensioning assembly comprises a movable tensioning wheel abutting against the side surface of a steel rail and a first tensioning spring connected with the movable tensioning wheel, the movable tensioning wheel tensions the side surface of the steel rail under the action of elastic tensioning force provided by the first tensioning spring, and the rail measuring assembly is a contact type gauge measuring assembly or a non-contact type gauge measuring assembly. The invention effectively solves the problem of contradiction in tension selection caused by the fact that the track tensioning and track measurement share one set of mechanism in the prior art by arranging the transverse tensioning assembly and the track measurement assembly which are mutually independent.)

1. The rail detection mechanism is characterized by comprising a walking wheel walking on a rail surface, a transverse tensioning assembly and a rail measuring assembly, wherein the transverse tensioning assembly and the rail measuring assembly are independently arranged, the transverse tensioning assembly comprises a movable tensioning wheel abutting against the side surface of a steel rail and a first tensioning spring connected with the movable tensioning wheel, the movable tensioning wheel tensions the side surface of the steel rail under the action of elastic tensioning force provided by the first tensioning spring, and the rail measuring assembly is a contact type rail gauge measuring assembly or a non-contact type rail gauge measuring assembly.

2. The rail inspection mechanism of claim 1, wherein the contact gauge measuring assembly includes a measuring wheel abutting the side of the rail, a second tensioning spring coupled to the measuring wheel, and a displacement sensor detecting displacement of the measuring wheel, the measuring wheel being urged against the side of the rail under the resilient tension provided by the second tensioning spring.

3. The rail inspection mechanism of claim 2, wherein the second tensioning spring provides a lesser elastic tension than the first tensioning spring.

4. The rail inspection mechanism of claim 1 wherein the non-contact gauge measuring assembly includes a distance sensor disposed opposite a side of the rail.

5. The rail inspection mechanism of any one of claims 1-4, wherein the number of the lateral tensioning assemblies is two, and the two lateral tensioning assemblies are symmetrically arranged on both sides of the rail measuring assembly along a direction perpendicular to the thrust direction of the second tensioning spring.

6. The rail inspection mechanism according to claim 2, wherein the traveling wheels are disposed on a traveling wheel support, the lateral tensioning assembly further comprises a first guide shaft and a first guide shaft support, the movable tensioning wheel is disposed on the traveling wheel support, one end of the first guide shaft is connected to the traveling wheel support, the other end of the first guide shaft is movably disposed on the first guide shaft support, the first tensioning spring is sleeved on the first guide shaft, and one end of the first tensioning spring abuts against the traveling wheel support, and the other end of the first tensioning spring abuts against the first guide shaft support.

7. The rail inspection mechanism according to claim 6, wherein the contact gauge measuring assembly further comprises a second guide shaft and a second guide shaft support, one end of the second guide shaft is connected to the measuring wheel through a connecting block, and the other end of the second guide shaft is movably disposed on the second guide shaft support and connected to the displacement sensor.

8. The rail inspection mechanism according to claim 7, wherein the second tension spring is sleeved on the second guide shaft, and has one end abutting against the connecting block and the other end abutting against the second guide shaft support; or

One end of the second tensioning spring is connected with the walking wheel support, and the other end of the second tensioning spring is connected with the connecting block.

9. A rail inspection trolley comprising a beam body, and further comprising at least one rail inspection mechanism as claimed in any one of claims 1 to 8, the rail inspection mechanism being provided on the beam body.

10. The rail inspection trolley according to claim 9, wherein the number of the rail inspection mechanisms is one, the beam body comprises a girder and a side arm arranged at one end of the girder, the rail inspection mechanism is arranged at one end of the girder far away from the side arm, and two ends of the side arm are respectively provided with a fixed wheel set.

Technical Field

The invention relates to the technical field of rail detection, in particular to a rail detection mechanism and a rail detection trolley.

Background

With the rapid development of railway industry in China, the train operation speed is continuously improved, and the precision requirement on the measurement and control of the geometric parameters of the railway track is higher and higher.

The rail gauge measuring mechanism is characterized in that the rail gauge measuring mechanism is a transverse stretching movement mechanism with elastic tension, the elastic tension has the function of driving a left transverse measuring gear train and a right transverse measuring gear train of the measuring trolley to expand outwards and always keep close contact with the inner side action edges of the left rail and the right rail to keep the transverse movement posture of the measuring trolley, and therefore the moving amount of the stretching movement mechanism can be measured through a high-precision displacement sensor and converted into a measuring result of the rail gauge of the rail.

In order to keep the measuring carriage stable in its lateral measuring attitude during its movement along the rail, it is necessary to have a large enough elastic tension, but for the gauge measuring mechanism, this elastic tension is the gauge measuring force, and the gauge measuring force must be strictly controlled to reduce abbe error in the measuring process. Therefore, when the track gauge measuring mechanism of the conventional track measuring trolley selects the transverse elastic tension, the contradiction exists that a larger tension is required to be selected for maintaining the transverse measuring posture, and a smaller tension is required to be selected for reducing the measuring error.

Disclosure of Invention

Based on this, the invention aims to provide a rail inspection mechanism and a rail inspection trolley, so as to solve the technical problem that when the transverse elastic tension is selected, the contradiction that a larger tension is required to be selected for maintaining the transverse measurement posture and a smaller tension is required to be selected for reducing the measurement error exists in the prior art.

According to the rail inspection mechanism in the embodiment of the invention, the rail inspection mechanism comprises a walking wheel walking on a rail surface, and a transverse tensioning assembly and a rail measuring assembly which are independently arranged, wherein the transverse tensioning assembly comprises a movable tensioning wheel abutting against the side surface of a steel rail and a first tensioning spring connected with the movable tensioning wheel, the movable tensioning wheel tensions the side surface of the steel rail under the action of elastic tensioning force provided by the first tensioning spring, and the rail measuring assembly is a contact type rail gauge measuring assembly or a non-contact type rail gauge measuring assembly.

Further, the contact type gauge measuring assembly comprises a measuring wheel abutting against the side face of the steel rail, a second tensioning spring connected with the measuring wheel, and a displacement sensor for detecting the displacement of the measuring wheel, wherein the measuring wheel is tightly attached to the side face of the steel rail under the action of elastic tensioning force provided by the second tensioning spring.

Further, the second tension spring provides an elastic tension force that is less than an elastic tension force provided by the first tension spring.

Further, the non-contact type gauge measuring assembly comprises a distance sensor which is arranged right opposite to the side face of the steel rail.

Further, the number of the transverse tensioning assemblies is two, and the two transverse tensioning assemblies are symmetrically arranged on two sides of the track measuring assembly along a direction perpendicular to the thrust direction of the second tensioning spring.

Furthermore, the walking wheel is arranged on a walking wheel support, the transverse tensioning assembly further comprises a first guide shaft and a first guide shaft support, the movable tensioning wheel is arranged on the walking wheel support, one end of the first guide shaft is connected with the walking wheel support, the other end of the first guide shaft is movably arranged on the first guide shaft support in a penetrating mode, the first tensioning spring is sleeved on the first guide shaft, and one end of the first tensioning spring is abutted to the walking wheel support, and the other end of the first tensioning spring is abutted to the first guide shaft support.

Furthermore, the contact type gauge measuring assembly further comprises a second guide shaft and a second guide shaft support, one end of the second guide shaft is connected with the measuring wheel through a connecting block, and the other end of the second guide shaft movably penetrates through the second guide shaft support and is connected with the displacement sensor.

Furthermore, the second tensioning spring is sleeved on the second guide shaft, one end of the second tensioning spring is abutted against the connecting block, and the other end of the second tensioning spring is abutted against the second guide shaft support; or

One end of the second tensioning spring is connected with the walking wheel support, and the other end of the second tensioning spring is connected with the connecting block.

The embodiment of the invention also provides a rail inspection trolley which comprises a beam body and at least one rail inspection mechanism, wherein the rail inspection mechanism is arranged on the beam body.

Furthermore, the number of the rail inspection mechanisms is one, the beam body comprises a girder and a side arm arranged at one end of the girder, the rail inspection mechanisms are arranged at one end of the girder, which is far away from the side arm, and two ends of the side arm are respectively provided with a fixed wheel set.

Compared with the prior art, the rail testing trolley has the advantages that the transverse tensioning assembly and the rail measuring assembly which are independent are arranged, the side face of the steel rail is tensioned through one independent transverse tensioning assembly to keep the measuring posture of the rail testing trolley, the rail is detected through the other independent rail measuring assembly, when the elastic tensioning force is selected, the transverse tensioning assembly selects a large tensioning force to maintain the measuring posture, the rail measuring assembly can select a small tensioning force (in a contact mode) or a non-selection elastic tensioning force (in a non-contact mode) according to the requirement of the rail measuring assembly, the measuring accuracy is guaranteed, and the problem that contradiction exists when the tensioning force is selected due to the fact that the rail tensioning and the rail measuring share one set of mechanism in the prior art is effectively solved.

Drawings

Fig. 1 is a front view schematically illustrating a track checking mechanism according to a first embodiment of the present invention;

FIG. 2 is a schematic top view of the rail inspecting mechanism according to the first embodiment of the present invention;

FIG. 3 is a schematic bottom view of the lateral tensioning assembly in the first embodiment of the present invention;

FIG. 4 is a schematic front view of a contact gauge measuring assembly according to a first embodiment of the present invention;

FIG. 5 is a schematic bottom view of a contact gage measurement assembly according to a first embodiment of the present invention;

FIG. 6 is a schematic front view of a contact gauge measuring assembly according to a second embodiment of the present invention;

FIG. 7 is a schematic top view of a rail inspection trolley according to a third embodiment of the invention;

fig. 8 is a schematic front view of a rail inspection trolley according to a third embodiment of the invention.

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This 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 to 5, a rail inspecting mechanism 10 according to a first embodiment of the present invention is shown, which includes a traveling wheel support 11, a traveling wheel 12 disposed on the traveling wheel support 11 and traveling on a rail surface (top surface of a steel rail), and a transverse tensioning assembly 13 and a rail measuring assembly independently disposed, in this embodiment, the rail measuring assembly is specifically a contact type gauge measuring assembly 14.

The transverse tensioning assembly 13 includes a movable tensioning wheel 131 abutting against the side surface of the steel rail and a first tensioning spring 132 connected to the movable tensioning wheel 131, and the movable tensioning wheel 131 always tensions the side surface of the steel rail under the action of elastic tensioning force provided by the first tensioning spring 132. More specifically, the transverse tensioning assembly 13 further includes a first guide shaft 133 and a first guide shaft support 134, the movable tensioning wheel 131 is disposed on the walking wheel support 11, one end of the first guide shaft 133 is connected to the walking wheel support 11, and the other end of the first guide shaft 133 is movably disposed on the first guide shaft support 134. The first tension spring 132 is sleeved on the first guide shaft 133, one end of the first tension spring is abutted to the travelling wheel support 11, and the other end of the first tension spring is abutted to the first guide shaft support 134, that is, the elastic tension force of the first tension spring 132 is applied to the movable tension wheel 131 through the travelling wheel support 11, and is also applied to the travelling wheel 12, so that the movable tension wheel 131, the travelling wheel 12, the first guide shaft 133 and the travelling wheel support 11 can perform transverse (vertical to the steel rail direction) telescopic motion together.

The contact type gauge measuring assembly 14 includes a measuring wheel 141 which runs against the side surface of the steel rail, a second tension spring 142 connected to the measuring wheel 141, and a displacement sensor 143 which detects the displacement of the measuring wheel 141, wherein the measuring wheel 141 is tightly attached to the side surface of the steel rail under the elastic tension force provided by the second tension spring 142. More specifically, the track measuring assembly 14 further includes a second guide shaft 144 and a second guide shaft support 145, one end of the second guide shaft 144 is connected to the measuring wheel 141 through a connecting block 146, the measuring wheel 141 is located below the second guide shaft 144, the other end of the second guide shaft 144 movably penetrates through the second guide shaft support 145 and is connected to the displacement sensor 143, the second tension spring 142 is sleeved on the second guide shaft 144, and one end of the second tension spring abuts against the connecting block 146, the other end of the second tension spring abuts against the second guide shaft support 145, that is, the elastic tension of the second tension spring 142 is applied to the measuring wheel 141 through the link block 146, so that the measuring wheel 141, the connecting block 146 and the second guide shaft 144 can make lateral telescopic movement together, therefore, the transverse telescopic motion of the contact type gauge measuring assembly 14 and the transverse telescopic motion of the transverse tensioning assembly 13 are not related and influenced, and belong to two completely independent transverse telescopic motion modules.

In addition, as shown in fig. 2 and 5, in the present embodiment, the number of the second guide shafts 144 and the number of the second tension springs 142 are two, each second guide shaft 144 is sleeved with one second tension spring 142, the two second guide shafts 144 share one second guide shaft support 145, and the two second guide shafts 144 are connected to the displacement sensor 143 at the same time, that is, the present embodiment adopts the double springs to tension the measuring wheel 141, so that the measuring wheel 141 is more stable in transverse movement, and the measurement reduction is improved. Of course, the present invention is not limited thereto, and in other embodiments, the number of the second tension springs 142 may be one or more, and the number of the second guide shafts 144 may correspond thereto.

It should be noted that, the first tension spring 132 is sleeved on the first guide shaft 133 to provide guidance for the elastic tension force of the first tension spring 132, so as to ensure that the elastic tension force of the first tension spring 132 always acts on the movable tension pulley 131 in a specified direction, thereby improving the tension stability. Similarly, the second tensioning spring 142 is sleeved on the second guide shaft 144 to provide guidance for the elastic tensioning force of the second tensioning spring 142, so that the elastic tensioning force of the second tensioning spring 142 is ensured to act on the measuring wheel 141 in a specified direction all the time, and the measuring stability and precision are improved.

The displacement sensor 143 is specifically a linear displacement sensor, because the lateral displacement of the measuring wheel 141 is equal to the lateral displacement of the second guide shaft 144, when the track gauge changes, the measuring wheel 141 can make lateral displacement in response to the track gauge change, at this time, the second guide shaft 144 can make the same lateral displacement along with the measuring wheel 141, because the second guide shaft 144 is connected to the displacement sensor 143, the lateral displacement of the second guide shaft 144 is detected by the displacement sensor 143, so that the displacement sensor 143 detects the lateral displacement of the measuring wheel 141, and the track gauge change is obtained, and the track gauge of the steel rail is measured.

It should be noted that, as shown in fig. 1-5, in particular use, the first guide axle support 134 needs to be fixed to the beam body 20 of the rail inspection trolley, and similarly, the second guide axle support 145 needs to be fixed to the beam body 20 of the rail inspection trolley, so as to fix the whole rail inspection mechanism 10 on the beam body of the rail inspection trolley. The first guide shaft support 134 and the second guide shaft support 145 may be the same support or different supports, that is, the first guide shaft support 134 and the second guide shaft support 145 may share one support or may respectively adopt separate supports.

Further, it is preferable that the elastic tension force provided by the second tension spring 142 is smaller than that provided by the first tension spring 132, and in particular, the first tension spring 132 may employ a spring having a larger elastic coefficient to provide a larger tension force to the movable tension pulley 131 to maintain the measurement posture; the second tension spring 142 may be a spring having a smaller elastic coefficient to provide a smaller tension to the movable tension pulley 131 to ensure the measurement accuracy. By way of example and not limitation, as an alternative embodiment, the movable tensioning wheel 131 should be subjected to a tensioning force of 200N or more, and the measuring wheel should be subjected to a tensioning force of 20N or less.

In order to better ensure the posture of the rail inspection trolley and improve the measurement accuracy, the rail inspection mechanism 10 in this embodiment is provided with two transverse tensioning assemblies 13, the two transverse tensioning assemblies 13 are symmetrically arranged on the front side and the rear side of the rail measuring assembly 14 along the direction (along the direction of the steel rail) perpendicular to the thrust of the second tensioning spring 142, and preferably, the rail measuring assembly 14 and the beam body of the rail inspection trolley are coaxially arranged, that is, the rail measuring assembly 14 is centrally arranged on the basis of the axis of the beam body of the rail inspection trolley, and the two transverse tensioning assemblies 13 are symmetrically arranged on the front side and the rear side of the rail measuring assembly 14, so that the rail measuring wheel 141 is tied in the middle, and two sides respectively adopt one set of independent transverse tensioning assemblies 13 to ensure the posture, thereby better ensuring the posture of the rail inspection trolley and improving the measurement accuracy.

In addition, in other alternative embodiments, the track measuring assembly may be a non-contact track gauge measuring assembly, and the non-contact track gauge measuring assembly may specifically include a distance sensor (not shown) disposed opposite to the side of the steel rail. When the distance measuring device is specifically implemented, the distance sensor can be fixedly arranged on the first guide shaft support, the second guide shaft support or the beam body of the rail inspection trolley through the connecting block and used for sensing the distance from the distance sensor to the side face of the steel rail so as to measure the rail gauge variation and further measure the rail gauge.

To sum up, in the rail inspection mechanism 10 of the present embodiment, the mutually independent transverse tensioning components 13 and rail measuring components 14 are provided to tension the side surface of the steel rail through one set of independent transverse tensioning components 13 to maintain the measurement posture of the rail inspection trolley, and the rail is detected through the other set of independent rail measuring components 14, so that when the elastic tensioning force is selected, the transverse tensioning components 13 select a large tensioning force to maintain the measurement posture, and the rail measuring components 14 can select a small tensioning force according to the needs of the user to ensure the measurement precision, thereby effectively solving the problem of contradiction in the tensioning force selection caused by the fact that the rail tensioning and rail measurement share one set of mechanism.

Referring to fig. 6, a track checking mechanism 10 according to a second embodiment of the present invention is shown, wherein the track checking mechanism 10 of the present embodiment is different from the track checking mechanism 10 of the first embodiment in that:

the second tension spring 142 is arranged differently from the first embodiment, specifically, in the present embodiment, the second tension spring 142 is a tension spring, one end of the second tension spring 142 is connected to the walking wheel support 11, and the other end of the second tension spring 142 is connected to the connecting block 146, that is, the tension of the second tension spring 142 of the first embodiment is a pushing force, that is, pushing the measuring wheel 141 outward, and the tension of the second tension spring 142 of the present embodiment is a pulling force, that is, pulling the measuring wheel 141 outward, so that the measuring wheel 141 always tensions the side surface of the steel rail.

In order to guide the second tension spring 142, the traction wheel support 11 is provided with a guide sleeve 111, and the second tension spring 142 is sleeved in the guide sleeve 111.

It should be noted that, the apparatus provided in the embodiment has the same implementation principle and the same technical effect as the first embodiment of the present invention, and for the sake of brief description, no mention may be made in the embodiment, and reference may be made to the corresponding contents in the first embodiment of the present invention.

In another aspect of the present invention, referring to fig. 7 to 8, a rail inspection trolley according to a third embodiment of the present invention is shown, which includes a beam 20 and a rail inspection mechanism 10, where the rail inspection mechanism 10 is the rail inspection mechanism 10 according to any one of the first embodiment and the second embodiment, where:

in the embodiment, the beam body 20 is a T-shaped beam, the beam body 20 specifically includes a girder 21 and a side arm 22 disposed at one end of the girder 21, the girder 21 and the side arm 22 are connected in a T-shape, the rail inspecting mechanism 10 is disposed at one end of the girder 21 away from the side arm 22, and two ends of the side arm 22 are respectively provided with a fixed wheel set 30. Preferably, the rail measuring assembly 14 of the rail detecting mechanism 10 is arranged coaxially with the girder 21, and the two transverse tensioning assemblies 13 of the rail detecting mechanism 10 are symmetrically distributed on the front side and the rear side of the rail measuring assembly 14.

The fixed wheel set 30 comprises a roller support 31 fixedly connected with the end part of the side arm 22, a roller 32 arranged on the roller support 31 and walking on the rail surface, and a fixed tension wheel 33 arranged on the roller 32 support 31 and tensioning the side surface of the steel rail, wherein the fixed tension wheel 33 and the movable tension wheel 131 have the same action and are used for tensioning the side surface of the steel rail and rolling on the side surface of the steel rail so as to ensure the posture of the rail detection trolley, and the difference is that the movable tension wheel 131 can do transverse telescopic motion, and the fixed tension wheel 33 cannot do transverse telescopic motion. Meanwhile, the walking wheels 12 and the rollers 32 have the same function and are used for rolling on the rail surface, so that the rail inspection trolley can walk on the rail.

In actual use, as shown in fig. 8, when the beam body 20 is erected on a track, the rail inspection mechanism 10 and the fixed wheel set 30 are respectively contacted with the left and right steel rails, at this time, the movable tensioning wheel 131 of the rail inspection mechanism 10 is tightly attached to the side surface of the steel rail and rolls on the side surface of the steel rail along with the movement of the rail inspection trolley, meanwhile, the fixed tensioning wheel 33 of the fixed wheel set 30 also tensions the side surface of the steel rail and rolls on the side surface of the steel rail along with the movement of the rail inspection trolley, and the tensioning wheels at two ends of the beam body 20 tension the side surface of the steel rail, so that the transverse measurement posture of the rail. Meanwhile, the measuring wheel 141 of the rail inspection mechanism 10 is also closely attached to the side surface of the rail and moves on the side surface of the rail along with the movement of the rail inspection trolley, and the displacement sensor 143 senses the transverse displacement of the measuring wheel 141, so that the track gauge variation is detected, and the track gauge between the left and right rails is measured.

It should be noted that the number of the rail detection mechanisms 10 on the rail detection trolley is not limited to one, and in other embodiments, a plurality of rail detection mechanisms 10 may be provided on the rail detection trolley, for example, one rail detection mechanism 10 is provided at both ends of the girder 21. In addition, the fixed tensioning wheels 33 at the two ends of the side arms 22 can also be changed into movable tensioning wheels, and the realization structure of the movable tensioning wheels is the same as that of the transverse tensioning assembly 13, so that the tensioning wheels at the two sides of the rail inspection trolley can be adjusted in a telescopic manner. In addition, in other embodiments, the beam body 20 may be "H" shaped or "i" shaped, that is, an H-shaped beam or an i-shaped beam may also be used, and when the beam body 20 changes, the number and the arrangement position of the rail detection mechanisms 10 may also be adaptively adjusted according to actual needs.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.