Portable railway clearance laser measuring device

Abstract

The utility model discloses a portable railway clearance laser measuring device, which belongs to the technical field of railway clearance measuring devices and comprises a cross beam, a railway clearance laser measuring instrument and steel rail rollers, the cross beam is composed of a first frame body, a second frame body and a third frame body, one end of the first frame body is hinged with one end of the second frame body through a first hinge shaft, and the other end of the second frame body is hinged with the third frame body through a second hinge shaft. The other end of the second frame body is hinged with the third frame body through a second hinge shaft; the first hinge shaft and the second hinge shaft are both arranged on the lower side of the second frame body, and the axis direction of the first hinge shaft and the axis direction of the second hinge shaft are both parallel to the width direction of the second frame body. A first turnover limiting device is arranged at the position where the first frame body and the second frame body are connected, and a second turnover limiting device is arranged at the position where the second frame body and the third frame body are connected. The structural design adopted by the scheme is used for optimizing the portability of the railway clearance laser measuring device.

Description

Technical Field

[0001] The utility model relates to the technical field of railway clearance measuring devices, in particular to a portable railway clearance laser measuring device. Background Art

[0002] Railway limits are outline dimension lines that ensure the safe operation of locomotives and vehicles. They provide a safe space for the operation of locomotives and vehicles. That is, the railway stipulates outline dimensions that are not allowed to be exceeded for locomotives and vehicles and buildings and equipment close to the line. Therefore, it can be considered that the limit is a reasonable space.

[0003] In the prior art, railway clearance measurement mostly uses a railway clearance laser measuring instrument based on laser measurement technology for non-contact measurement. This measurement method has the characteristics of high measurement efficiency, low manpower input, and can reduce the influence of human factors on the measurement results. The specific principle of the railway clearance laser measuring instrument is to use the laser rangefinder in the instrument to measure the distance from the center of the railway line to the outer contour of the equipment and the angle between the laser beam and the two rail planes. Through trigonometric calculation, the distance from the outer contour of the equipment to the center line of the line (limit value) and the height of the object to be measured can be obtained.

[0004] In order to further improve the measurement efficiency and reduce the manpower input in the measurement process, the railway clearance laser measuring device includes a crossbeam, and rail rollers are provided at both ends of the crossbeam. The railway clearance laser measuring instrument is installed on the crossbeam, and the railway clearance laser measuring instrument is moved while the rail rollers roll along the rails to achieve measurement at different positions along the rails. Furthermore, the rail rollers are provided with a driving device or a dragging device is provided on the crossbeam to provide the necessary driving force for the movement of the railway clearance laser measuring instrument through the driving device or the dragging device. The specific scheme is such as the technical scheme provided in the patent document with patent application number CN201820431203.X.

[0005] In order to ensure the normal operation of the locomotive on the line and to ensure the safety of the measurement process, it is necessary to carry out the measurement when the measurement conditions are met (under the protection of a dedicated person, the measurement is carried out during the "window time" when there are no passing locomotives and vehicles). Therefore, the work of the inspection personnel includes the installation and removal of the railway limit laser measurement device on the rails and the transfer of the railway limit laser measurement device to areas outside the rail line. At the same time, the railway usually uses a standard gauge of 1435mm, so the above beam size is relatively long, and it is necessary to optimize the relevant structure to improve the portability of the railway limit laser measurement device. Utility Model Content

[0006] In view of the above-mentioned technical problem of improving the portability of the railway clearance laser measuring device, the utility model proposes a portable railway clearance laser measuring device, and the relevant structural design is used to optimize the portability of the railway clearance laser measuring device.

[0007] The portable railway clearance laser measuring device provided by the utility model solves the problem through the following technical points: the portable railway clearance laser measuring device comprises a crossbeam, on which a railway clearance laser measuring instrument is installed, rail rollers are arranged at both ends of the crossbeam, and the crossbeam is composed of a first frame, a second frame, and a third frame arranged in sequence and connected in series along the length direction of the crossbeam, wherein one end of the first frame is hingedly connected to one end of the second frame through a first hinge shaft, and the other end of the second frame is hingedly connected to one end of the third frame through a second hinge shaft;

[0008] The first hinge shaft and the second hinge shaft are both arranged at the lower side of the second frame, and the axis directions of the first hinge shaft and the second hinge shaft are both parallel to the width direction of the second frame;

[0009] A first flip limit device is provided at a position where the first frame and the second frame are connected to each other, and a second flip limit device is provided at a position where the second frame and the third frame are connected to each other, the first flip limit device is used to limit the terminal position of the upward flipping of the free end of the first frame relative to the second frame, and the second flip limit device is used to limit the terminal position of the upward flipping of the free end of the third frame relative to the second frame;

[0010] The railway clearance laser measuring instrument is installed on the second frame, and the rail rollers at the ends of the crossbeam are respectively installed on the free ends of the first frame and the third frame.

[0011] In this scheme, the railway clearance laser measuring instrument is a laser measuring instrument with laser ranging function and laser beam angle measurement function. The specific usage method is that the railway clearance laser measuring instrument is mounted on the crossbeam, and the crossbeam is supported on the rail through the rail roller. The railway clearance laser measuring instrument moves along the rail under the power configured by the device itself or under the traction of manpower or locomotive to realize the railway clearance measurement at different positions along the rail.

[0012] This solution provides a portable railway clearance laser measuring device to solve the problems that the existing crossbeam is set longer to adapt to the track gauge, and is inconvenient to install and remove on the rail and to transfer in areas outside the rail line.

[0013] 14. The foldable luggage carrier of claim 13 wherein the first and second hinge axes are located adjacent to each other in the second frame and the hinge axes are located adjacent to each other in the second frame. In the process of unfolding the crossbeam, when the free end of the first frame and the free end of the third frame flip upward relative to the second frame, when the first flip limit device and the second flip limit device both trigger the end position limit function, the crossbeam is unfolded to the maximum length, and the length is used to adapt to the distance between the rail rollers at both ends of the crossbeam, so that the rail rollers at the ends of the crossbeam under this distance can be supported on the rails on different sides respectively. Therefore, by adopting the first flip limit device and the second flip limit device to respectively limit the flip angle of the first frame and the third frame relative to the second frame when unfolding, the crossbeam can easily obtain a unique unfolded length when unfolded, which facilitates the installation of the device on the rail; at the same time, it is set that the railway limit laser measuring instrument is located on the second frame. When the device is stored in the manner of lifting the second frame to realize the portable function, the position of the railway limit laser measuring instrument in space can be stably maintained to avoid the railway limit laser measuring instrument from being damaged due to shaking, collision, etc., so as to protect the precise optical and electronic instruments on the railway limit laser measuring instrument.

[0014] As a person skilled in the art, the first flip limit device and the second flip limit device are respectively used to limit the first frame and the third frame from further rotating relative to the second frame in a specific rotation direction, so the structural forms commonly used in the prior art can be adopted, for example: the first frame and the second frame are both provided with pin holes, and when the first frame is rotated until the pin hole thereon is aligned with the pin hole on the second frame, the end position restriction purpose is achieved by inserting the pin; the third frame and the second frame are both provided with pin holes, and when the third frame is rotated until the pin hole thereon is aligned with the pin hole on the second frame, the end position restriction purpose is achieved by inserting the pin, such a first flip limit device and a second flip limit device can be understood to include pin holes and pins set on the corresponding frames. However, the above scheme requires manual operation to achieve the end position limit when implemented, so the better way is: when the first frame and the third frame are flipped around the corresponding hinge axes relative to the second frame, after flipping to a certain extent, the first frame and the third frame contact with the second frame to achieve the end position limit. In this way, the corresponding flip limit device is the structural feature on the corresponding frame. Of course, for example, when the first hinge axis rotates with the first frame and the second hinge axis rotates with the third frame, such a structural feature can also be located on the first hinge axis, the second hinge axis and the second frame. The first flip limit device and the second flip limit device have multiple implementation forms.

[0015] In a specific embodiment, the upper sides of both ends of the second frame are provided with bosses, the upper side of one end of the first frame used to connect to the second frame is provided with a groove, and the upper side of one end of the third frame used to connect to the second frame is provided with a groove;

[0016] The boss at the end of the second frame and the groove on the first frame form the first flip limit device, when the free end of the first frame flips upward relative to the second frame to the bottom surface or side surface of the groove and is pressed against the bottom surface or end surface of the boss, the free end of the first frame flips upward relative to the second frame to the end position;

[0017] The boss at the end of the second frame and the groove on the third frame form the second flip limit device. When the free end of the third frame flips upward relative to the second frame to the bottom or side of the groove and is pressed against the bottom or end surface of the boss, the free end of the third frame flips upward relative to the second frame to the end position.

[0018] The present invention provides a technical solution in which the beam can limit the final unfolded state of the beam by means of a first flip limit device and a second flip limit device when unfolding, and has the characteristic that the present device can be used conveniently. The specific principle is that the boss on the second frame does not affect the downward flipping of the free ends of the first frame and the third frame relative to the second frame, but when the free ends of the first frame and the third frame are flipped upward relative to the second frame, for example, the extrusion relationship between the boss at the corresponding end of the second frame and the groove on the first frame is that the bottom surface of the boss and the bottom surface of the groove are in conflict with each other, and the side surface of the front end of the boss and the side surface of the groove are in conflict with each other, that is, the first frame is flipped to the said terminal position; the extrusion relationship between the boss at the corresponding end of the second frame and the groove on the third frame is that the bottom surface of the boss and the bottom surface of the groove are in conflict with each other, and the side surface of the front end of the boss and the side surface of the groove are in conflict with each other, that is, the third frame is flipped to the said terminal position. Similarly, the first flip limit device and the second flip limit device can also be configured on the first hinge shaft and the second hinge shaft, but the scheme of matching the boss and the groove only requires the end of the corresponding frame to be processed into the corresponding shape, which is more convenient for processing and assembly.

[0019] In a specific embodiment, it also includes a rail gauge measuring device installed on the crossbeam. In the existing railway clearance measurement process, the railway clearance laser measuring instrument is often set in the middle of the center line of the track line. When the rail gauge changes, it will cause the measurement result to deviate from the actual result. In this context, this solution is set to have a rail gauge measuring device on the crossbeam. In practice, the accuracy of the measurement result can be verified by the data obtained by the rail gauge measuring device.

[0020] In a specific embodiment, the rail rollers at either end of the cross beam include: a first support wheel for supporting on the top surface of the rail, and a second support wheel for supporting on the inner side surface of the rail;

[0021] The second support wheel is equipped with a wheel frame, a crossbar, a sleeve, a mounting frame, a coil spring and a pressure sensor. The upper end of the mounting frame is fixedly connected to the crossbeam, the sleeve is connected to the lower end of the mounting frame, the second support wheel is mounted on the wheel frame, one end of the crossbar is fixedly connected to the wheel frame, and the other end is slidably fitted in the inner hole of the sleeve, the coil spring is sleeved on the crossbar, and the coil spring is clamped between the wheel frame and the sleeve, the pressure sensor is arranged between the coil spring and the sleeve or between the coil spring and the wheel frame, and the pressure sensor is used to measure the elastic force of the coil spring after being compressed. In the specific implementation, although there is a second support wheel and it is squeezed on the inner side of the rail, in order to ensure the anti-dumping performance of the device, the first support wheels on both sides of the crossbeam include front wheels and rear wheels.

[0022] The above scheme provides a rail roller with a track gauge measuring function. Specifically, the first support wheel is used to support the device on the top surface of the rail, the second support wheel is used to resist the inner side surface of the rail, and the coil spring is in a compressed state. In this way, the device is supported by the first support wheel in the vertical direction, and the force of the inner side surface of the rail facing the second support wheel in the horizontal direction can prevent the device from sliding off the rail. Moreover, when the device moves along the track, if the track gauge remains unchanged, the measurement results of the pressure sensors on both sides of the beam are that neither side changes significantly, or one side becomes larger and the other side becomes smaller to match the increase. If the track gauge changes, the measurement results of the pressure sensors on both sides of the beam change mismatchedly, for example, both sides increase, both become smaller, or the change on one side is significantly greater than the change on the other side. The rail gauge can be judged by this change. Since the device is supported on the rail by the first support wheel during use, the coil springs configured for the second support wheels on both sides of the beam only need to generate elastic force to push the second support wheel out of the sleeve to keep it in contact with the inner side of the rail. It is not necessary to push the device by the coil spring so that the device as a whole moves sideways relative to the track to avoid the second support wheel being suspended in the air. Therefore, this solution can select a coil spring with smaller stiffness to reduce the weight of the device and optimize its portability. In the above solution, the working principle of the components configured for the second support wheel is as follows: one end of the coil spring is pushed by the sleeve, and the other end pushes the wheel frame. When the position of the rail in the length direction of the beam changes relative to the sleeve, the coil spring is further compressed or stretched. In this process, the crossbar slides in the corresponding direction relative to the sleeve, and the measured value of the pressure sensor corresponds to the length of the coil spring.

[0023] In a specific embodiment, the crossbar penetrates the sleeve, and a nut is threadedly connected to the crossbar on the side of the sleeve away from the wheel frame, and a flat key is also arranged between the sleeve and the crossbar to prevent the crossbar from rotating relative to the sleeve. In the rail roller scheme equipped with a spiral spring, when the second support wheel is not clamped between the inner side surfaces of the rail, the distance between the second support wheels on both sides in the track gauge direction will be greater than the track gauge. In order to facilitate the installation of the device on the track, a scheme is set in which the crossbar passes through the sleeve and a nut is arranged on the sleeve. In specific use, when the crossbeam is unfolded, the crossbar is pulled along the sleeve to move toward the side where the second frame is located by rotating the nut. At this time, the distance between the second support wheels on both sides becomes smaller, so that the second support wheel can be conveniently embedded between the inner side surfaces of the rails on both sides, and then the nut is rotated in the opposite direction to release the crossbar. The crossbar moves to the side away from the second frame under the thrust of the spiral spring, so that the second support wheel is supported on the inner side surface of the rail. The flat key is used to fix the axis orientation of the second support wheel and prevent the crossbar from rotating when the nut is turned.

[0024] In a specific embodiment, the crossbar is provided with a spline shaft section, the sleeve is provided with a spline hole section, and the spline shaft section is matched in the spline hole section. In this solution, the flat key is formed on the spline shaft section and the spline hole section, which is a technical solution with a simple assembly structure.

[0025] In a specific embodiment, the railway clearance laser measuring instrument is detachably connected to the top of the second frame, and the position of the railway clearance laser measuring instrument in the length direction of the second frame is adjustable. In this solution, the railway clearance laser measuring instrument is detachable relative to the second frame to achieve: conveniently provide protection for the railway clearance laser measuring instrument during transfer and storage; the railway clearance laser measuring instrument is adjustable in position to achieve: solve the problem that the railway clearance laser measuring instrument is not located in the middle of the center line of the railway line due to processing, assembly, wear errors, etc.

[0026] In a specific embodiment, the second frame is provided with a strip bolt hole, the strip bolt hole is parallel to the length direction of the second frame, and the railway clearance laser measuring instrument is detachably connected to the second frame by connecting bolts passing through the strip bolt holes. This scheme is a technical scheme with a simple structure, and within the coverage range of the strip bolt hole, the railway clearance laser measuring instrument can be adjusted to any position within the coverage range.

[0027] In a specific embodiment, it also includes two handles arranged on the top surface of the second frame, and the railway clearance laser measuring instrument is located in the space between the two handles in the length direction of the second frame. This scheme is a technical scheme that uses the handles to provide an upward pulling force for the second frame to lift the crossbeam or the device, which is used to drive the crossbeam to deform or transfer the device, and uses the railway clearance laser measuring instrument to be located in the middle of the force application position to avoid the railway clearance laser measuring instrument from deflecting during the force application process, thereby achieving the protection of the railway clearance laser measuring instrument.

[0028] In a specific embodiment, when the free end of the first frame body is flipped upward to the end position relative to the second frame body, and the free end of the second frame body is flipped upward to the end position relative to the second frame body, the crossbeam is in a straight state. This scheme is a technical scheme in which, after the crossbeam is unfolded, its shape is consistent with the shape of the conventional railway clearance laser measuring instrument transfer trolley frame, which conforms to conventional adjustment and usage habits.

[0029] The utility model has the following beneficial effects:

[0030] In this solution, the structural design of the beam makes the device have the following characteristics:

[0031] 1. The crossbeam can be adjusted to a smaller length for occupying a smaller space and a smaller length for the crossbeam, so as to facilitate the carrying, storage and vehicle transportation of the device, thereby improving the portability of the device;

[0032] 2. The state change of the horizontal frame can be completed automatically when it is folded, so this solution is easy to operate;

[0033] 3. The maximum length of the beam after unfolding can be limited, so that the beam can easily obtain a unique unfolded length when unfolding, which is convenient for completing the configuration of the rail roller and the rail on the device;

[0034] 4. When operating the cross frame, it is easy for the railway limit laser measuring instrument to be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a specific cooperation mode between a portable railway clearance laser measuring device and a rail;

[0036] Figure 2 for Figure 1 A schematic diagram of one of the states of the portable railway clearance laser measuring device after being folded;

[0037] Figure 3 for Figure 1 Magnified view of the area marked A.

[0038] The accompanying drawings are marked as follows: 1. first frame, 2. second frame, 3. railway limit laser measuring instrument, 4. handle, 51. first hinge axis, 52. second hinge axis, 6. boss, 7. third frame, 8. rail, 9. first support wheel, 10. second support wheel, 11. mounting frame, 12. sleeve, 13. nut, 14. cross bar, 15. pressure sensor, 16. coil spring, 17. wheel frame. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the embodiments, but the present invention is not limited to the following embodiments:

[0040] Embodiment 1:

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, the portable railway clearance laser measuring device comprises a crossbeam, on which a railway clearance laser measuring instrument 3 is installed, rail rollers are arranged at both ends of the crossbeam, and the crossbeam is composed of a first frame 1, a second frame 2, and a third frame 7 which are sequentially arranged and connected in series along the length direction of the crossbeam, wherein one end of the first frame 1 is hingedly connected to one end of the second frame 2 through a first hinge shaft 51, and the other end of the second frame 2 is hingedly connected to one end of the third frame 7 through a second hinge shaft 52;

[0042] The first hinge shaft 51 and the second hinge shaft 52 are both disposed on the lower side of the second frame 2, and the axis directions of the first hinge shaft 51 and the second hinge shaft 52 are both parallel to the width direction of the second frame 2;

[0043] A first flip limit device is provided at a position where the first frame 1 and the second frame 2 are connected to each other, and a second flip limit device is provided at a position where the second frame 2 and the third frame 7 are connected to each other, wherein the first flip limit device is used to limit the terminal position of the upward flipping of the free end of the first frame 1 relative to the second frame 2, and the second flip limit device is used to limit the terminal position of the upward flipping of the free end of the third frame 7 relative to the second frame 2;

[0044] The railway clearance laser measuring instrument 3 is installed on the second frame 2, and the rail rollers at the ends of the crossbeams are installed on the free ends of the first frame 1 and the third frame 7 respectively.

[0045] In this solution, the railway clearance laser measuring instrument 3 is a laser measuring instrument with laser ranging function and laser beam angle measurement function. The specific usage method is that the railway clearance laser measuring instrument 3 is mounted on the crossbeam, and the crossbeam is supported on the rail 8 through the rail roller. The railway clearance laser measuring instrument 3 moves along the rail 8 under the power configured by the device itself or under the traction of manpower or locomotive, so as to realize the railway clearance measurement at different positions along the rail 8.

[0046] This solution provides a portable railway clearance laser measuring device to solve the problems that the existing crossbeam is set longer to adapt to the track gauge, and is inconvenient to install and remove on the rail 8 and to transfer in areas outside the rail 8 line.

[0047] Different from the prior art, in this solution, the crossbeam is configured to be composed of a first frame body 1, a second frame body 2 and a third frame body 7, and the frames are hingedly connected, and the corresponding first hinge axis 51 and second hinge axis 52 are hinged at the lower side of the second frame body 2, and the axial directions of the first hinge axis 51 and the second hinge axis 52 are parallel to the width direction of the second frame body 2. In this way, when only the second frame body 2 is lifted, the free ends of the first frame body 1 and the third frame body 7 can be turned downward relative to the second frame body 2. That is, the first frame 1 is turned down around the first hinge shaft 51, and the third frame 7 is turned down around the second hinge shaft 52, so that the length of the space occupied by the beam is reduced and the length of the beam is reduced, which is convenient for carrying, storing and transporting the device by vehicle, thereby improving the portability of the device. Moreover, when the second frame 2 is lifted up, the state change can be completed automatically under the action of gravity and the first hinge shaft 51 and the second hinge shaft 52 as rotating joints respectively, so the present solution also has the characteristic of convenient operation. At the same time, it is configured to also include the first flip limit device, The second flip limit device, in the process of unfolding the crossbeam, when the free end of the first frame 1 and the free end of the third frame 7 flip upward relative to the second frame 2, when the first flip limit device and the second flip limit device both trigger the end position limit function, the crossbeam is unfolded to the maximum length, and the length is used to adapt to the distance between the rail rollers at both ends of the crossbeam, so that the rail rollers at the ends of the crossbeam under this distance can be supported on the rails 8 on different sides respectively, so by adopting the first flip limit device and the second flip limit device, the first frame 1 and the third frame 7 are respectively limited. Relative to the flipping angle of the second frame 2 when it is unfolded, the crossbeam can easily obtain a unique unfolded length when unfolded, so that the installation of the device on the rail 8 is convenient; at the same time, it is arranged that the railway clearance laser measuring instrument 3 is located on the second frame 2. When the device is stored in the manner of lifting the second frame 2 to realize the portable function, the position of the railway clearance laser measuring instrument 3 in space can be stably maintained to prevent the railway clearance laser measuring instrument 3 from being damaged due to shaking, collision, etc., so as to protect the precision optical and electronic instruments on the railway clearance laser measuring instrument 3.

[0048] As a person skilled in the art, the first flip limit device and the second flip limit device are respectively used to limit the first frame 1 and the third frame 7 from further rotating relative to the second frame 2 in a specific rotation direction, so the structural form commonly used in the prior art can be adopted, for example: the first frame 1 and the second frame 2 are both provided with pin holes, and when the first frame 1 is rotated until the pin hole thereon is aligned with the pin hole on the second frame 2, the end position restriction purpose is achieved by inserting the pin; the third frame 7 and the second frame 2 are both provided with pin holes, and when the third frame 7 is rotated until the pin hole thereon is aligned with the pin hole on the second frame 2, the end position restriction purpose is achieved by inserting the pin, such a first flip limit device and a second flip limit device can be understood to include pin holes and pins set on the corresponding frames. However, the above scheme requires manual operation to achieve the end position limit when implemented, so the better way is: during the process of the first frame 1 and the third frame 7 flipping relative to the second frame 2 around the corresponding hinge axes, after flipping to a certain extent, the first frame 1 and the third frame 7 contact the second frame 2 to achieve the end position limit. In this way, the corresponding flip limit device is the structural feature on the corresponding frame. Of course, for example, when the first hinge axis 51 rotates with the first frame 1 and the second hinge axis 52 rotates with the third frame 7, such a structural feature can also be located on the first hinge axis 51, the second hinge axis 52 and the second frame 2. The first flip limit device and the second flip limit device have multiple implementation forms.

[0049] On the basis of the above scheme, a more detailed scheme is as follows: bosses 6 are provided on the upper sides of both ends of the second frame 2, a groove is provided on the upper side of one end of the first frame 1 for connecting with the second frame 2, and a groove is provided on the upper side of one end of the third frame 7 for connecting with the second frame 2;

[0050] The boss 6 at the end of the second frame 2 and the groove on the first frame 1 form the first flip limit device. When the free end of the first frame 1 flips upward relative to the second frame 2 to the bottom surface or side surface of the groove and is pressed against the bottom surface or end surface of the boss 6, the free end of the first frame 1 flips upward relative to the second frame 2 to the end position;

[0051] The boss 6 at the end of the second frame 2 and the groove on the third frame 7 form the second flip limit device. When the free end of the third frame 7 flips upward relative to the second frame 2 to the bottom or side of the groove and is pressed against the bottom or end surface of the boss 6, the free end of the third frame 7 flips upward relative to the second frame 2 to the end position.

[0052] The present invention provides a technical solution that allows the beam to limit its final unfolded state by means of a first flip limit device and a second flip limit device when unfolding, and has the characteristic of making the present device easy to use. The specific principle is that the boss 6 on the second frame 2 does not affect the downward flipping of the free ends of the first frame 1 and the third frame 7 relative to the second frame 2, but when the free ends of the first frame 1 and the third frame 7 are flipped upward relative to the second frame 2, for example, the extrusion relationship between the boss 6 at the corresponding end of the second frame 2 and the groove on the first frame 1 is that the bottom surface of the boss 6 and the bottom surface of the groove are in conflict with each other, and the side surface of the front end of the boss 6 and the side surface of the groove are in conflict with each other, that is, the first frame 1 is flipped to the said terminal position; the extrusion relationship between the boss 6 at the corresponding end of the second frame 2 and the groove on the third frame 7 is that the bottom surface of the boss 6 and the bottom surface of the groove are in conflict with each other, and the side surface of the front end of the boss 6 and the side surface of the groove are in conflict with each other, that is, the third frame 7 is flipped to the said terminal position. Similarly, a first flip limit device and a second flip limit device can also be configured on the first hinge shaft 51 and the second hinge shaft 52, but the scheme of matching the boss 6 with the groove only requires the end of the corresponding frame to be processed into the corresponding shape, which is more convenient for processing and assembly.

[0053] On the basis of the above scheme, a more detailed scheme is: it also includes a rail gauge measuring device 8 installed on the crossbeam. In the existing railway clearance measurement process, the railway clearance laser measuring instrument 3 is often set in the middle of the center line of the track line. When the rail gauge 8 changes, it will cause the measurement result to deviate from the actual result. In this context, this scheme is set to have a rail gauge measuring device 8 on the crossbeam. In practice, the accuracy of the measurement result can be verified by the data obtained by the rail gauge measuring device 8.

[0054] On the basis of the above scheme, a more detailed scheme is as follows: the rail rollers at either end of the cross beam include: a first support wheel 9 for supporting on the top surface of the rail 8, and a second support wheel 10 for supporting on the inner side of the rail 8;

[0055] The second support wheel 10 is equipped with a wheel frame 17, a cross bar 14, a sleeve 12, a mounting frame 11, a coil spring 16 and a pressure sensor 15. The upper end of the mounting frame 11 is fixedly connected to the cross beam, the sleeve 12 is connected to the lower end of the mounting frame 11, the second support wheel 10 is installed on the wheel frame 17, one end of the cross bar 14 is fixedly connected to the wheel frame 17, and the other end is slidably fitted in the inner hole of the sleeve 12, the coil spring 16 is sleeved on the cross bar 14, and the coil spring 16 is clamped between the wheel frame 17 and the sleeve 12, the pressure sensor 15 is arranged between the coil spring 16 and the sleeve 12 or between the coil spring 16 and the wheel frame 17, and the pressure sensor 15 is used to measure the elastic force of the coil spring 16 after being compressed. In the specific implementation, although the second support wheel 10 is provided and squeezed on the inner side of the rail 8, in order to ensure the anti-dumping performance of the device, the first support wheels 9 on both sides of the cross beam include front wheels and rear wheels.

[0056] The above scheme provides a rail roller with a track gauge measuring function. Specifically, the first support wheel 9 is used to support the device on the top surface of the rail 8, the second support wheel 10 is used to abut against the inner side of the rail 8, and the coil spring 16 is in a compressed state. In this way, the device is supported by the first support wheel 9 in the vertical direction, and the force of the inner side of the rail 8 facing the second support wheel 10 in the horizontal direction can prevent the device from sliding off the rail 8. In addition, when the device moves along the track, if the track gauge remains unchanged, the measurement results of the pressure sensors 15 on both sides of the beam are that neither side changes significantly, or one side becomes larger and the other side becomes smaller to match the increase. If the track gauge changes, the measurement results of the pressure sensors 15 on both sides of the beam change mismatchedly, for example, both sides increase, both become smaller, or the change on one side is significantly greater than the change on the other side. The track gauge of the rail 8 can be judged by this change. Since the device is supported on the rail 8 by the first support wheel 9 during use, the coil springs 16 configured on the second support wheels 10 on both sides of the beam only need to meet the elastic force generated to push the second support wheel 10 out of the sleeve 12 to keep in contact with the inner side of the rail 8. It is not necessary to push the device by the coil spring 16 so that the device as a whole moves sideways relative to the track to avoid the second support wheel 10 hanging in the air. Therefore, the present scheme can select a coil spring 16 with smaller stiffness to achieve the purpose of reducing the weight of the device and optimizing its portability. In the above scheme, the working principle of the components configured for the second support wheel 10 is: one end of the coil spring 16 is pushed by the sleeve, and the other end pushes the wheel frame 17. When the position of the rail 8 in the length direction of the beam changes relative to the sleeve, the coil spring 16 is further compressed or stretched. In this process, the cross bar 14 slides in the corresponding direction relative to the sleeve 12, and the measured value of the pressure sensor 15 corresponds to the length of the coil spring 16.

[0057] Based on the above scheme, a more detailed scheme is: the cross bar 14 penetrates the sleeve 12, and a nut 13 is threadedly connected to the cross bar 14 on the side of the sleeve 12 away from the wheel frame 17, and a flat key is also provided between the sleeve 12 and the cross bar 14 to prevent the cross bar 14 from rotating relative to the sleeve 12. In the rail roller scheme equipped with coil springs 16, when the second support wheel 10 is not clamped between the inner sides of the rails 8, the distance between the second support wheels 10 on both sides in the gauge direction will be greater than the gauge. In order to facilitate the installation of the device on the track, a scheme is provided in which the cross bar 14 passes through the sleeve 12 and a nut 13 is configured on the sleeve 12. In specific use, when the cross beam is unfolded, the cross bar 14 is pulled along the sleeve 12 to move toward the side where the second frame 2 is located by rotating the nut 13. At this time, the distance between the second support wheels 10 on both sides becomes smaller, and the second support wheel 10 can be conveniently embedded between the inner sides of the rails 8 on both sides, and then the nut 13 is rotated in the opposite direction to release the cross bar 14. The cross bar 14 moves to the side away from the second frame 2 under the thrust of the coil spring 16, so that the second support wheel 10 is supported on the inner side of the rail 8. The flat key is used to fix the axial direction of the second support wheel 10 and prevent the cross bar 14 from rotating when the nut 13 is rotated.

[0058] Based on the above solution, a more detailed solution is: a spline shaft section is provided on the crossbar 14, a spline hole section is provided on the sleeve 12, and the spline shaft section is matched in the spline hole section. In this solution, the flat key is formed on the spline shaft section and the spline hole section, which is a technical solution with a simple assembly structure.

[0059] On the basis of the above scheme, a more detailed scheme is: the railway clearance laser measuring instrument 3 is detachably connected to the top of the second frame 2, and the position of the railway clearance laser measuring instrument 3 in the length direction of the second frame 2 is adjustable. In this scheme, the railway clearance laser measuring instrument 3 is detachable relative to the second frame 2 to achieve: conveniently provide protection for the railway clearance laser measuring instrument 3 during transfer and storage; the railway clearance laser measuring instrument 3 is adjustable in position to achieve: solve the problem that the railway clearance laser measuring instrument 3 is not located in the middle of the center line of the railway line due to processing, assembly, wear errors, etc.

[0060] On the basis of the above scheme, a more detailed scheme is as follows: a strip bolt hole is provided on the second frame 2, the strip bolt hole is parallel to the length direction of the second frame 2, and the railway clearance laser measuring instrument 3 is detachably connected to the second frame 2 by connecting bolts passing through the strip bolt hole. This scheme is a technical scheme with a simple structure, and within the coverage range of the strip bolt hole, the railway clearance laser measuring instrument 3 can be adjusted to any position within the coverage range.

[0061] On the basis of the above scheme, a more detailed scheme is: it also includes two handles 4 arranged on the top surface of the second frame 2, and the rail clearance laser measuring instrument 3 is located in the space between the two handles 4 in the length direction of the second frame 2. This scheme is a technical scheme that uses the handles 4 to provide an upward pulling force for the second frame 2 to lift the crossbeam or the device, which is used to drive the crossbeam to deform or transfer the device, and uses the rail clearance laser measuring instrument 3 to be located in the middle of the force application position to avoid the rail clearance laser measuring instrument 3 from deflecting during the force application process, thereby protecting the rail clearance laser measuring instrument 3.

[0062] On the basis of the above scheme, a more detailed scheme is: when the free end of the first frame 1 is flipped upward to the end position relative to the second frame 2, and the free end of the second frame 2 is flipped upward to the end position relative to the second frame 2, the crossbeam is in a straight state. This scheme is a technical scheme in which, after the crossbeam is unfolded, its shape is consistent with the shape of the conventional railway clearance laser measuring instrument 3 transfer trolley frame, which conforms to conventional adjustment and usage habits.

[0063] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and the specific embodiments of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments derived without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable railway clearance laser measuring device, comprising a crossbeam, on which a railway clearance laser measuring instrument (3) is mounted, and rail rollers are arranged at both ends of the crossbeam, characterized in that: The crossbeam is composed of a first frame (1), a second frame (2), and a third frame (7) which are sequentially arranged and connected in series along the length direction of the crossbeam, wherein one end of the first frame (1) is hingedly connected to one end of the second frame (2) via a first hinge shaft (51), and the other end of the second frame (2) is hingedly connected to one end of the third frame (7) via a second hinge shaft (52); The first hinge shaft (51) and the second hinge shaft (52) are both arranged on the lower side of the second frame (2), and the axis directions of the first hinge shaft (51) and the second hinge shaft (52) are both parallel to the width direction of the second frame (2); A first flip limit device is provided at a position where the first frame (1) and the second frame (2) are connected to each other, and a second flip limit device is provided at a position where the second frame (2) and the third frame (7) are connected to each other, the first flip limit device is used to limit the terminal position of the free end of the first frame (1) flipping upward relative to the second frame (2), and the second flip limit device is used to limit the terminal position of the free end of the third frame (7) flipping upward relative to the second frame (2); The railway clearance laser measuring instrument (3) is mounted on the second frame (2), and the rail rollers at the ends of the crossbeam are respectively mounted on the free ends of the first frame (1) and the third frame (7).

2. The portable railway clearance laser measuring device according to claim 1, characterized in that: The upper sides of both ends of the second frame (2) are provided with bosses (6), the upper side of one end of the first frame (1) used for connecting to the second frame (2) is provided with a groove, and the upper side of one end of the third frame (7) used for connecting to the second frame (2) is provided with a groove; The boss (6) at the end of the second frame (2) and the groove on the first frame (1) form the first flip limit device, when the free end of the first frame (1) flips upward relative to the second frame (2) to the bottom surface or side surface of the groove and is pressed against the bottom surface or end surface of the boss (6), the free end of the first frame (1) flips upward relative to the second frame (2) to the end position; The boss (6) at the end of the second frame (2) and the groove on the third frame (7) form the second flip limit device. When the free end of the third frame (7) flips upward relative to the second frame (2) until the bottom surface or side surface of the groove is pressed against the bottom surface or end surface of the boss (6), the free end of the third frame (7) flips upward relative to the second frame (2) to an end position.

3. The portable railway clearance laser measuring device according to claim 1, characterized in that: Also included is a rail gauge measuring device mounted on the crossbeam.

4. The portable railway clearance laser measuring device according to claim 1, characterized in that: The rail rollers at either end of the crossbeam include: a first support wheel (9) for supporting on the top surface of the rail (8), and a second support wheel (10) for supporting on the inner side surface of the rail (8); The second support wheel (10) is provided with a wheel frame (17), a cross bar (14), a sleeve (12), a mounting frame (11), a coil spring (16) and a pressure sensor (15); the upper end of the mounting frame (11) is fixedly connected to the cross beam; the sleeve (12) is connected to the lower end of the mounting frame (11); the second support wheel (10) is mounted on the wheel frame (17); one end of the cross bar (14) is fixedly connected to the wheel frame (17); the other end is slidably fitted in the inner hole of the sleeve (12); the coil spring (16) is sleeved on the cross bar (14); and the coil spring (16) is clamped between the wheel frame (17) and the sleeve (12); the pressure sensor (15) is arranged between the coil spring (16) and the sleeve (12) or between the coil spring (16) and the wheel frame (17); and the pressure sensor (15) is used to measure the elastic force of the coil spring (16) after being compressed.

5. The portable railway clearance laser measuring device according to claim 4, characterized in that: The cross bar (14) penetrates the sleeve (12), a nut (13) is threadedly connected to the cross bar (14) on the side of the sleeve (12) away from the wheel frame (17), and a flat key is provided between the sleeve (12) and the cross bar (14) to prevent the cross bar (14) from rotating relative to the sleeve (12).

6. The portable railway clearance laser measuring device according to claim 5, characterized in that: The crossbar (14) is provided with a spline shaft section, the sleeve (12) is provided with a spline hole section, and the spline shaft section is matched in the spline hole section.

7. The portable railway clearance laser measuring device according to claim 1, characterized in that: The railway clearance laser measuring instrument (3) is detachably connected to the top of the second frame (2), and the position of the railway clearance laser measuring instrument (3) in the length direction of the second frame (2) is adjustable.

8. The portable railway clearance laser measuring device according to claim 7, characterized in that: The second frame (2) is provided with a strip bolt hole, the strip bolt hole is parallel to the length direction of the second frame (2), and the railway clearance laser measuring instrument (3) is detachably connected to the second frame (2) via a connecting bolt passing through the strip bolt hole.

9. The portable railway clearance laser measuring device according to any one of claims 1 to 8, characterized in that: It also includes two handles (4) arranged on the top surface of the second frame (2), and in the length direction of the second frame (2), the railway clearance laser measuring instrument (3) is located in the space between the two handles (4).

10. The portable railway clearance laser measuring device according to any one of claims 1 to 8, characterized in that: When the free end of the first frame (1) is flipped upward to an end position relative to the second frame (2), and the free end of the second frame (2) is flipped upward to an end position relative to the second frame (2), the crossbeam is in a straight state.

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