CN214199998U

CN214199998U - Measuring device and machineshop car of rail gauge

Info

Publication number: CN214199998U
Application number: CN202023238669.4U
Authority: CN
Inventors: 胡世周; 马占川; 陈光军; 谢江生; 刘亚南; 姬常杰
Original assignee: CRCC High Tech Equipment Corp Ltd
Current assignee: CRCC High Tech Equipment Corp Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-14
Anticipated expiration: 2030-12-29

Abstract

The embodiment of the application provides a measuring device and an engineering truck for a rail gauge of a steel rail, and relates to a railway track measuring technology. A device for measuring the gauge of a rail, comprising: a cross beam; the measuring mechanism is arranged on the cross beam and used for measuring the track gauge; the measuring wheels are positioned at the two ends of the cross beam, wherein the measuring wheels at one end are fixed on the cross beam, and the measuring wheels at the other end are movably connected with the cross beam and are connected with the measuring mechanism, so that the measuring wheels at the two ends of the cross beam are respectively and tightly supported at the inner sides of the two steel rails under the driving of the measuring mechanism; wherein, measuring mechanism includes: the driving assembly is connected to the measuring wheels and is used for driving the measuring wheels to move so as to enable the measuring wheels to be tightly supported on the inner sides of the two steel rails respectively; a string, one end of which is connected to the driving component; the pull wire sensor is fixed on the cross beam and connected to one end, away from the driving component, of the string; the string sensor is used for detecting the variation of the string.

Description

Measuring device and machineshop car of rail gauge

Technical Field

The application relates to a railway track measuring technology, in particular to a measuring device for a steel rail gauge and an engineering truck.

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 gauge of the railway track is one of the main measurement items for geometric parameter measurement. The currently used method for measuring the track gauge mainly comprises contact measurement. The contact measurement is to use a linear displacement sensor to realize the measurement of the track gauge, and the sensor is ensured to be constantly contacted with the track gauge point of the track to be measured through a mechanical structure in the detection process. Because the sensor needs to be in contact with the track in the measuring process, when the detection speed needs to be increased, the sensor is easily abraded, and the measuring precision is reduced; and the steel rail can be damaged, so that potential safety hazards are generated.

Disclosure of Invention

In order to solve one of the technical defects, the embodiment of the application provides a measuring device for a rail gauge of a steel rail and an engineering truck.

The embodiment of the first aspect of this application provides a measuring device of rail gauge, includes:

a cross beam;

the measuring mechanism is arranged on the cross beam and used for measuring the track gauge;

the measuring wheels are positioned at the two ends of the cross beam, wherein the measuring wheels at one end are fixed on the cross beam, and the measuring wheels at the other end are movably connected with the cross beam and are connected with the measuring mechanism, so that the measuring wheels at the two ends of the cross beam are respectively and tightly supported at the inner sides of the two steel rails under the driving of the measuring mechanism;

wherein the measuring mechanism comprises:

the driving assembly is connected to the measuring wheel and used for driving the measuring wheel to move so as to enable the measuring wheel to be tightly supported on the inner sides of the two steel rails respectively;

a string having one end connected to the drive assembly;

the pull wire sensor is fixed on the cross beam and connected to one end, away from the driving component, of the string; the string sensor is used for detecting the variation of the string.

In one possible implementation, the driving assembly includes:

the mounting rod is connected to the cross beam, and one end of the mounting rod is connected to the measuring wheel;

the clamping plate is hinged to one end of the mounting rod;

the measuring driving piece is fixed on the cross beam; one end of the measuring driving piece is hinged to the clamping plate; the measuring driving piece and the mounting rod are respectively positioned on two opposite sides of the clamping plate; the measuring driving piece is used for driving the clamping plate and the mounting rod to move, so that the measuring wheels are respectively and tightly supported on the inner sides of the two steel rails.

In one possible implementation manner, the mounting rod is a telescopic rod; and/or the measuring driving part is a telescopic cylinder.

In one possible implementation manner, the measuring device further includes retracting and releasing mechanisms disposed at two ends of the cross beam; the retraction mechanism comprises:

one end of the retractable driving piece is hinged to a vehicle body of the engineering vehicle, and the other end of the retractable driving piece is hinged to the cross beam; the retractable driving piece is used for driving the cross beam to lift or lower;

one end of the plane four-bar assembly is used for being fixed on a vehicle body of the engineering vehicle; the other end of the plane four-bar assembly is fixed on the cross beam; the plane four-bar assembly is used for guiding the cross beam to be lifted or lowered along the vertical direction.

In one possible implementation manner, the retraction driving member includes: and a lifting cylinder.

In one possible implementation, the planar four-bar assembly includes:

the first connecting plate is used for being connected with a vehicle body of the engineering vehicle;

a second connecting plate fixed to the cross beam, the second connecting plate being parallel to the first connecting plate;

and the two connecting rods are respectively connected to the two ends of the first connecting plate and the second connecting rod.

In one possible implementation manner, two parallel and opposite positioning plates are arranged on the cross beam, and the positioning plates are provided with positioning holes;

the measuring device further comprises a locking mechanism arranged on the cross beam; the locking mechanism includes:

the output end of the locking driving piece is provided with a locking rod;

the lifting lug is used for being connected with a vehicle body of the engineering vehicle; the lifting lug is provided with a lock hole;

when the retraction mechanism drives the cross beam to be lifted in place, one end of the lifting lug is located between the two positioning plates, and the locking driving piece drives the locking rod to move so as to penetrate through the positioning hole and the lock hole.

In one possible implementation, the locking drive comprises a locking cylinder;

and/or the locking mechanism is positioned between the two retraction mechanisms.

An embodiment of a second aspect of the present application provides a work vehicle, including:

a vehicle body;

a rail gauge measuring apparatus as claimed in any one of the preceding claims, said measuring apparatus being mounted to said vehicle body.

In one possible implementation manner, the engineering vehicle further includes:

a control terminal;

the control terminal is electrically connected with a driving component of the measuring mechanism;

the control terminal is also electrically connected with a retractable driving piece of the measuring device;

the control terminal is also electrically connected with a locking driving piece of the measuring device.

The embodiment of the application provides a measuring device for a rail gauge of a steel rail and an engineering truck, wherein the measuring device is provided with a cross beam, the cross beam is provided with a measuring mechanism, and two ends of the cross beam are respectively provided with a measuring wheel; when the gauge is measured to needs, measuring mechanism's drive assembly drive measuring wheel motion for the measuring wheel that is located the crossbeam both ends supports respectively locates the inboard of rail, measures the motion of actuating mechanism pulling string of a thread simultaneously, and the change of drawing the line sensor and detecting string of a thread is in order to do benefit to and confirm the gauge according to the change of string of a thread. In this example, the sensing device in the measuring mechanism does not need to contact with the rail, which is beneficial to reducing or even avoiding the abrasion to the rail, is beneficial to ensuring the accuracy of the measuring result, and prolongs the service life of the measuring device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a first schematic structural diagram of a rail gauge measuring apparatus according to an exemplary embodiment;

FIG. 2 is a second schematic structural diagram of a rail gauge measuring apparatus according to an exemplary embodiment;

fig. 3 is a schematic connection diagram of a measuring device for a rail gauge of a steel rail and a control terminal according to an exemplary embodiment.

Description of reference numerals:

1-a cross beam; 11-a positioning plate; 2-a measuring wheel; 3-a measuring mechanism; 31-measuring the drive; 32-clamping plate; 33-mounting a rod; 34-a pull wire sensor; 35-chord line; 4-a retraction mechanism; 41-retraction driving part; 42-a first connection plate; 43-connecting rod; 44-a second connecting plate; 5-a locking mechanism; 51-locking the drive; 52-a lifting lug; 6-control the terminal.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In addition, the inventor conducts research and analysis on the measurement method which is common at present and also finds that: most of the existing measuring devices need manual operation, and the automation degree is low.

In order to overcome at least one of the above problems, embodiments of the present application provide a measuring device for a rail gauge of a steel rail and an engineering truck, where the measuring device has a cross beam, the cross beam is provided with a measuring mechanism, and two ends of the cross beam are respectively provided with a measuring wheel; when the gauge is measured to needs, measuring mechanism's drive assembly drive measuring wheel motion for the measuring wheel that is located the crossbeam both ends supports respectively locates the inboard of rail, measures the motion of actuating mechanism pulling string of a thread simultaneously, and the change of drawing the line sensor and detecting string of a thread is in order to do benefit to and confirm the gauge according to the change of string of a thread. In this example, the sensing device in the measuring mechanism does not need to contact with the rail, which is beneficial to reducing or even avoiding the abrasion to the rail, is beneficial to ensuring the accuracy of the measuring result, and prolongs the service life of the measuring device.

The beam is provided with a measuring mechanism, a retraction mechanism and a locking mechanism, and two ends of the beam are respectively provided with a measuring wheel; when the gauge needs to be measured, the beam can be driven to lower through the retraction jack, the measuring mechanism can lower along with the beam, the measuring wheels at two ends of the beam are respectively abutted against the inner sides of the steel rails, and the measuring mechanism measures the gauge; when the measurement is finished, the cross beam can be driven to lift through the retraction mechanism, the measurement mechanism is lifted together with the cross beam, and the cross beam and the body of the engineering truck are locked through the locking device; therefore, the measuring device is relatively simple in structure, can meet the requirement of light weight, is convenient to carry on the body of the engineering truck, is beneficial to improving the flexibility of the operation of the engineering truck, can be reliably folded when the gauge measuring operation is not carried out, avoids the influence of the measuring device on the operation of other devices, and is beneficial to ensuring the working reliability of each functional device of the engineering truck.

FIG. 1 is a first schematic structural diagram of a rail gauge measuring apparatus according to an exemplary embodiment; fig. 2 is a schematic structural diagram of a measuring apparatus for a rail gauge according to an exemplary embodiment.

The structure, function and implementation process of the measuring device provided by the present embodiment are illustrated in the following with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, the measurement apparatus provided in this embodiment includes:

a cross beam 1;

the measuring mechanism 3 is arranged on the cross beam 1 and used for measuring the track gauge;

the measuring wheels 2 are positioned at two ends of the beam 1, wherein one end of the measuring wheel 2 is fixed on the beam 1, and the other end of the measuring wheel 2 is movably arranged on the beam 1 and connected to the measuring mechanism 3, so that the measuring wheels 2 at two ends of the beam 1 are respectively and tightly supported at the inner sides of the two steel rails under the driving of the measuring mechanism 3.

The cross beam 1 can be made of metal with certain bearing capacity so as to ensure the installation reliability of each mechanism. The length of the beam 1 can be set according to actual needs. Illustratively, the length of the beam 1 can be close to the track gauge to facilitate proper layout of the mechanisms.

The two ends of the beam 1 are respectively provided with a measuring wheel 2, wherein the measuring wheel 2 at one end is fixed at one end of the beam 1, and the measuring wheel 2 at the other end is movably connected with the beam 1 and connected with a measuring mechanism 3, so that the measuring wheels 2 at the two ends of the beam 1 are respectively and tightly supported at the inner sides of the two steel rails under the driving of the measuring mechanism 3. When the measuring wheels 2 are respectively tightened on the inner sides of the two rails, the measurement can be started to measure the gauge. Exemplarily, both ends of the beam 1 may be respectively provided with one or more measuring wheels 2; alternatively, the number of measuring wheels 2 at both ends of the beam 1 may be equal.

In one possible implementation, the measuring means 3 comprises:

the driving assembly is connected to the measuring wheels 2 and is used for driving the measuring wheels 2 to move so that the two measuring wheels 2 are respectively and tightly supported at the inner sides of the two steel rails;

a string 35, one end of the string 35 being connected to the drive assembly;

a pull sensor 34 fixed to the beam 1, the pull sensor 34 being connected to an end of the string 35 facing away from the driving assembly; the string sensor 34 is used to detect the amount of change in the string 35.

Illustratively, the drive assembly includes:

the mounting rod 33, the mounting rod 33 is connected to the crossbeam 1, one end of the mounting rod 33 is connected to the measuring wheel 2;

the clamping plate 32 is hinged to one end of the telescopic cylinder;

a measuring drive member 31, the measuring drive member 31 being fixed to the cross beam 1; one end of the measuring driving piece 31 is hinged to the clamping plate 32; the measuring driving piece 31 and the telescopic rod are respectively positioned at two opposite sides of the clamping plate 32; the measuring drive 31 is used for driving the clamping plate 32 and the mounting rod 33 to move, so that the two measuring wheels 2 are respectively tightly supported on the inner sides of the two steel rails.

Alternatively, the measuring driving member 31 may be a telescopic cylinder, so as to reduce the cost of the measuring device; alternatively, the measuring drive 31 can also be a hydraulic cylinder or an electric motor with a spindle. One end of the measuring drive 31 can be fixed to the cross beam 1 by means of at least one plate-like structure; when the measuring drive 31 is fixedly connected to the cross beam 1 by a plurality of plate-like structures, the plurality of plate-like structures are spaced apart and do not affect the output movement of the measuring drive 31. As shown in fig. 3, the measuring drive 31 can be communicatively connected to the control terminal 6.

Optionally, at least one slide plate may be provided on the lower surface of the beam 1, in which the mounting bar 33 is slidably arranged to facilitate ensuring that the mounting bar 33 moves in the lateral direction. Wherein the mounting rod 33 is a telescopic rod. When the mounting rod 33 is a telescopic rod, the distance between the two measuring wheels 2 can be adjusted by controlling the telescopic amount of the telescopic rod, so that the measuring device of the embodiment can be suitable for measuring more types of track gauges. In other examples, the mounting rod 33 may be a rod body detachably connected to the clamping plate 32, so as to facilitate replacement of the rod body with a corresponding length according to the scene requirement.

By adopting the measuring device provided by the embodiment, the movement of the measuring driving piece 31 can be controlled through a terminal, the measuring driving piece 31 moves the clamping plate 32 to move so as to push the mounting rod 33 and the measuring wheels 2 mounted on the mounting rod 33 to extend out, so that the two measuring wheels 2 are respectively and tightly supported on the inner sides of the two steel rails; at this time, the string 35 is pulled out with the movement of the clamping plate 32, and the change amount of the length of the string 35 can be detected by the string sensor 34, so that the rail gauge value can be determined according to the change amount of the length of the string 35. The relationship between the variation of the length of the chord line 35 and the track gauge value can be pre-fitted, so that the string sensor 34 or the control terminal 6 can determine the corresponding track gauge value according to the detected variation of the length of the chord line 35 and the relationship.

In this example, when the track gauge needs to be measured, the driving assembly of the measuring mechanism 3 drives the measuring wheels 2 to move, so that the measuring wheels 2 at the two ends of the cross beam 1 respectively abut against the inner sides of the steel rails, the driving assembly simultaneously pulls the string 35 to move, and the string sensor 34 detects the variation of the string, so as to be beneficial to determining the track gauge according to the variation of the string 35. The sensing device in the measuring mechanism 3 does not need to be in contact with the track, so that the abrasion to the track is reduced or even avoided, the accuracy of a measuring result is ensured, and the service life of the measuring device is prolonged.

In one possible implementation manner, the measurement apparatus further includes: and the retracting mechanisms 4 are respectively arranged at two ends of the cross beam 1 mechanism and can be used for being connected with the body of the engineering truck.

The two ends of the beam 1 are respectively provided with a retraction mechanism 4. The retracting mechanism 4 is used for driving the beam 1 to move, so that the beam 1 is lowered along the direction far away from the vehicle body (towards the steel rail), or the beam 1 is lifted along the direction far away from the vehicle body (far away from the steel rail). The measuring mechanism 3 can be at least partially positioned between the two retraction mechanisms 4 to facilitate the uniform stress of the beam 1.

Illustratively, the retraction mechanism 4 includes:

one end of the retractable driving piece 41 is hinged to the body of the engineering truck, and the other end of the retractable driving piece 41 is hinged to the cross beam 1; the retractable driving part 41 is used for driving the beam 1 to lift or lower;

one end of the plane four-bar assembly is used for being fixed on a vehicle body of the engineering vehicle; the other end of the plane four-bar component is fixed on the cross beam 1; the plane four-bar assembly is used for guiding the cross beam 1 to be lifted or lowered along the vertical direction.

Illustratively, one end of the retractable driving member 41 is hinged to the vehicle body through a hinge shaft and a hinge plate, and the other end is hinged to the cross beam 1 through a hinge shaft and a hinge plate. The retraction drive 41 includes: the cylinder is lifted, so that the cost of the measuring device is reduced; alternatively, the retraction drive 41 may be a hydraulic cylinder or an electric motor with a lead screw.

Optionally, the planar four-bar assembly comprises:

the first connecting plate 42 is used for being connected with the body of the engineering truck;

a second connection plate 44, the second connection plate 44 being fixed to the cross beam 1, the second connection plate 44 being parallel to the first connection plate 42;

and two connecting rods 43, wherein the two connecting rods 43 are respectively connected to two ends of the first connecting plate 42 and the second connecting plate 43.

In this example, the planar four-bar linkage can form a parallelogram structure, which is beneficial to ensuring that the beam 1 is lifted or lowered vertically, and is beneficial to ensuring the accuracy of the measurement result of the measuring mechanism 3.

Adopt the measuring device that this embodiment provided, when the gauge needs to be measured, receive and release driving piece 41 through the control and drive crossbeam 1 along the direction (towards the direction of rail face) motion of keeping away from the automobile body, simultaneously, two connecting rods 43 rotate for first connecting plate 42 motion in vertical plane, second connecting plate 44 rotates for connecting rod 43 motion in vertical plane to ensure crossbeam 1 along vertical promotion or transfer, do benefit to the accuracy nature of the measuring result of ensureing measuring mechanism 3. At the end of the measurement, the measuring mechanism 3 can be lifted and retracted by the retracting and releasing mechanism 4.

In one possible implementation manner, the measurement apparatus further includes: and a locking mechanism 5, wherein the locking mechanism 5 is arranged on the cross beam 1 and used for locking the measuring device to the vehicle body. The locking mechanism 5 is used for locking the measuring device to the vehicle body after the measurement is finished, so that the measuring device is prevented from influencing the operation of other devices, and the working reliability of each functional device of the engineering vehicle is favorably ensured. The number of the locking mechanisms 5 can be one, and the locking mechanisms 5 can be arranged in the middle of the cross beam 1, so that the cross beam 1 can be prevented from deflecting, and the locking effect on the measuring device can be ensured. Alternatively, the number of the locking mechanisms 5 may be multiple, and the multiple locking mechanisms 5 are distributed on the cross beam 1 at intervals, so as to facilitate avoiding the deflection of the cross beam 1 and ensuring the locking effect on the measuring device.

In one possible implementation manner, two parallel and opposite positioning plates 11 are arranged on the cross beam 1, and the positioning plates 11 are provided with positioning holes;

the lock mechanism 5 includes:

a lock driver 51 having a lock lever at an output end of the lock driver 51;

the lifting lug 52 is used for being connected with the body of the engineering truck; the lifting lug 52 is provided with a lock hole;

when the retraction mechanism 4 drives the cross beam 1 to be lifted to the right position, one end of the lifting lug 52 is located between the two positioning plates 11, and the locking driving piece 51 drives the locking rod to move so as to penetrate through the positioning hole and the lock hole.

Optionally, the locking drive 51 comprises a locking cylinder to facilitate reducing the cost of the measuring device; alternatively, the lock driving member 51 may be a hydraulic cylinder or a motor having a lead screw. One end of the locking drive 51 may be fixed to the cross beam 1 by at least one plate-like structure; when the locking drive 51 is fixedly connected to the cross beam 1 by a plurality of plate-like structures, the plurality of plate-like structures are spaced apart and do not affect the measurement of the output movement of the locking drive 51.

In other examples, the locking mechanism 5 may also be a manual locking structure, and the manual locking structure may include a lifting lug 52 and a locking bolt, wherein the lifting lug 52 is used for being connected with the body of the engineering vehicle; the lifting lug 52 is provided with a lock hole; under the effort that the staff provided, the screw rod of locking bolt can wear to establish in locating hole and lockhole and with the cooperation of locking nut to it is fixed with the automobile body with crossbeam 1 through lug 52. Of course, the implementation of the locking mechanism 5 is not limited thereto, and the embodiment is only illustrated here.

By adopting the measuring device provided by the embodiment, under the condition that the measuring device does not work, an operator can control the locking driving piece 51 to move through the control terminal 6, the locking driving piece 51 drives the locking rod to move so as to penetrate through the positioning hole and the locking hole, the cross beam 1 and the vehicle body are relatively fixed, and the measuring mechanism 3 and the vehicle body are locked.

When the measuring mechanism 3 needs to measure, the operator can control the retraction driving part 41 to move through the control terminal 6, the retraction driving part 41 drives the cross beam 1 to move away from the vehicle body (towards the track), and meanwhile, under the guiding action of the plane four-bar assembly, the cross beam 1 is ensured to drive the measuring mechanism 3 to move in the vertical plane until the cross beam 1 drives the measuring mechanism 3 to transfer to the measuring position.

After the measuring mechanism 3 reaches the measuring position, an operator can control the measuring driving part 31 to move through the control terminal 6, the measuring driving part 31 moves the clamping plate 32 to further push the mounting rod 33 and the measuring wheel 2 mounted on the mounting rod 33 to extend out, so that the two measuring wheels 2 are respectively and tightly supported on the inner sides of the two steel rails; at this time, the string 35 is pulled out with the movement of the clamping plate 32, and the string 35 length variation amount can be detected by the string sensor 34, so that the string sensor 34 or the control terminal 6 can determine the track gauge value according to the string 35 length variation amount.

After the measuring mechanism 3 finishes measuring, an operator can control the retraction driving part 41 to move through the control terminal 6, the retraction driving part 41 drives the cross beam 1 to move towards the vehicle body (away from the track), and meanwhile, under the guiding action of the plane four-bar assembly, the cross beam 1 is ensured to drive the measuring mechanism 3 to move in a vertical plane until the cross beam 1 drives the measuring mechanism 3 to be lifted to a locking position. The measuring device is locked to the vehicle body by a lock mechanism 5.

Wherein the control terminal 6 is in communication connection with each of the driving members. The control terminal 6 may be an operation panel provided in the engineering vehicle, or the control terminal 6 may be an electronic device having a control function such as a remote controller.

The measuring device for the rail gauge of the steel rail provided by the embodiment comprises a cross beam 1, wherein the cross beam 1 is provided with a measuring mechanism 3, a retraction mechanism 4 and a locking mechanism 5, and two ends of the cross beam 1 are respectively provided with a measuring wheel 2; when the gauge needs to be measured, the beam 1 can be driven to be lowered through the retraction jack 4, the measuring mechanism 3 is lowered along with the beam 1, the measuring wheels 2 positioned at the two ends of the beam 1 are respectively abutted against the inner sides of the steel rails, and the measuring mechanism 3 measures the gauge; when the measurement is finished, the beam 1 can be driven to lift through the retraction mechanism 4, the measuring mechanism 3 is lifted together with the beam 1, and the beam 1 and the body of the engineering truck are locked through the locking device; therefore, the measuring device is relatively simple in structure, can meet the requirement of light weight, is convenient to carry on the body of the engineering truck, is beneficial to improving the flexibility of the operation of the engineering truck, can be reliably folded when the gauge measuring operation is not carried out, avoids the influence of the measuring device on the operation of other devices, and is beneficial to ensuring the working reliability of each functional device of the engineering truck.

The embodiment also provides an engineering truck, includes:

a vehicle body;

the device for measuring the rail gauge of the steel rail in any one of the preceding examples, wherein the measuring device is mounted on the vehicle body.

The structure, function, and implementation process of the measuring apparatus for the rail gauge of the steel rail are the same as those of the foregoing examples, and are not described herein again.

The work vehicle further comprises a control terminal 6. The control terminal 6 is electrically connected to a measuring drive 31 of the measuring device. The control terminal 6 is also electrically connected to the measuring drive 31 of the measuring device. The control terminal 6 is also electrically connected to the take-up and pay-off drive 41 of the measuring device. The control terminal 6 is also electrically connected to the locking drive 51 of the measuring device. The control terminal 6 may be an operation panel provided in the engineering vehicle, or the control terminal 6 may be an electronic device having a control function such as a remote controller.

In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A device for measuring the gauge of a rail, comprising:

a cross beam;

wherein the measuring mechanism comprises:

a string having one end connected to the drive assembly;

2. The measurement device of claim 1, wherein the drive assembly comprises:

the clamping plate is hinged to one end of the mounting rod;

3. A measuring device as claimed in claim 2, wherein the mounting bar is a telescopic bar; and/or the measuring driving part is a telescopic cylinder.

4. The measuring device of claim 1, further comprising a retracting mechanism disposed at each end of the beam, the retracting mechanism comprising:

5. A measuring device as claimed in claim 4, wherein the retractable drive comprises: and a lifting cylinder.

6. A measuring device according to claim 4, wherein the planar four-bar assembly comprises:

7. The measuring device according to claim 4, wherein the cross beam is provided with two parallel and opposite positioning plates, and the positioning plates are provided with positioning holes;

the output end of the locking driving piece is provided with a locking rod;

8. The measuring device of claim 7, wherein the locking drive comprises a locking cylinder;

9. A work vehicle, comprising:

a vehicle body;

a rail gauge measuring apparatus according to any one of claims 1 to 8, said measuring apparatus being mounted to said carriage.

10. The machineshop car of claim 9, further comprising:

a control terminal;

the control terminal is electrically connected with a measuring driving piece of the measuring device;