Portable five-point laser gauge for track gauge

Abstract

The utility model relates to track measurement technical field, it is a portable five point formula laser detection track gauge, including fixed base, rotating seat, main laser range finder and the steel rail clamp seat of being able to be clamped in the outside of steel rail, steel rail clamp seat left side fixed mounting has fixed base, and the upper side of fixed base and rotating seat right department undersides articulate installation are together. The utility model is reasonable and compact, installs steel rail clamp seat on the measured steel rail, adjusts rotating seat to the horizontal position through adjusting screw, so main laser range finder can measure the distance of rotating seat left side and opposite steel rail top surface 16mm of steel rail clamp seat, then with the width of rotating seat does and, can calculate the track gauge of two steel rails, through adjusting screw and steel rail clamp seat, can quickly install main laser range finder and steel rail together, has reduced the operation intensity of operator, has promoted the stability in portable five point formula laser detection track gauge measurement operation, and main laser range finder can improve measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of track measurement technology and is a portable five-point laser gauge measuring ruler. Background Technology

[0002] In the field of railway operation and maintenance, the track gauge is a key tool for detecting the track gauge and level between two rails on the line. Its performance is directly related to the quality of line maintenance and construction operations, and thus affects railway traffic safety. Traditional track gauges are spiral rotary gauges and electronic gauges.

[0003] Spiral rotary track gauges rely on manual reading and mechanical adjustment, which not only result in large measurement errors but are also limited by usage conditions and personnel skill levels, and involve a significant workload during measurement. In complex and changing field environments, they are prone to bumps and knocks during transportation, which can drastically reduce their measurement accuracy and make it difficult to meet the high-precision operation and maintenance requirements of modern railways. At the same time, manual reading and recording are prone to errors, leading to inaccurate data and affecting the accuracy of track maintenance data.

[0004] While electronic track gauges improve automation by enabling automatic data measurement and display through built-in sensors (such as displacement and tilt sensors) and displays, reducing manual operation and recording errors, they still rely on contact measurement. The downward pressure varies from person to person, and long-term use leads to severe wear, affecting measurement accuracy and equipment lifespan. Furthermore, electronic track gauges are heavy, bulky, easily damaged, and expensive. They also lack adaptability to harsh environments (such as rain, snow, sandstorms, high temperatures, and low temperatures), are easily damaged, and exhibit unstable measurements.

[0005] During on-site operations, workers need to frequently bend over to adjust, count, or mark, which is physically demanding and prone to occupational injuries. This is especially true in the frigid winter environment, where hand operations are extremely inconvenient.

[0006] In addition, when measuring railway tracks under load, large railway maintenance machinery needs to be parked on the track to be measured and use its own weight to simulate loading (increasing load) on the railway track. This allows for the measurement of the geometric parameters of the railway track under load, which can reflect the changes in the geometric parameters of the railway track under unloaded conditions (such as roadbed subsidence, ballast softening, ice and snow damage, and flood erosion).

[0007] When large railway maintenance machinery is parked on the railway track to be measured, the calibration of the testing system of the large railway maintenance machinery and the measurement of the rails under the large railway maintenance machinery require the operators to enter under the frame of the large railway maintenance machinery, which can easily cause injury to the operators. When some large railway maintenance machinery cannot be used for measurement, the large railway maintenance machinery needs to be moved away, resulting in low calibration efficiency. Summary of the Invention

[0008] This utility model provides a portable five-point laser gauge for track measurement, which overcomes the shortcomings of the existing technology and can effectively solve the problems of high labor intensity and low measurement efficiency of existing gauges.

[0009] The technical solution of this utility model is achieved through the following measures: a portable five-point laser gauge includes a fixed base, a rotating base, a main laser rangefinder, and a rail clamp that can be mounted on the outside of the rail. The fixed base is fixedly installed on the left side of the rail clamp. The upper side of the fixed base is hinged to the lower right side of the rotating base. The rotating base has a main chamber with an opening to the left in the center of the left side. The main laser rangefinder is installed in the main chamber. The lower left side of the fixed base has an adjustment screw hole that runs vertically through it. An adjustment screw with its upper end in contact with the lower side of the rotating base is screwed into the adjustment screw hole.

[0010] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution: The left side of the aforementioned rotating base has four auxiliary chambers with openings facing left, spaced circumferentially, and each auxiliary chamber is equipped with an auxiliary laser rangefinder.

[0011] The aforementioned rotating base may have a front mounting groove with an opening facing forward on the left front side, and a rear mounting groove with an opening facing backward on the left rear side. Inclination measuring instruments are installed in both the front mounting groove and the rear mounting groove.

[0012] The aforementioned fixed base can be in the shape of an inverted L. Support plates are fixedly installed on the upper right side of the fixed base corresponding to the front and rear positions of the rotating base. The front side of the support plate is provided with a hinge hole that runs through the front and rear. The front side of the lower part of the rotating base corresponding to the hinge hole is provided with a rotating hole that runs through the front and rear. A hinge shaft is installed in the rotating hole. The front end and rear end of the hinge shaft are rotatably installed in the hinge hole at the corresponding position.

[0013] The front end of the aforementioned hinge shaft may be provided with a front locking screw hole that opens forward, and a front locking bolt is screwed into the front locking screw hole. The rear end of the head of the front locking bolt contacts the front side of the front support plate. The rear end of the hinge shaft is provided with a rear locking screw hole that opens backward, and a rear locking bolt is screwed into the rear locking screw hole. The front end of the head of the rear locking bolt contacts the rear side of the rear support plate.

[0014] The above may also include a first control module, a first wireless transceiver module, a second control module, and a second wireless transceiver module. A mounting groove is provided on the upper right side of the rotating seat. The lower part of the mounting groove is interconnected with the right side of the main chamber and the right side of the auxiliary chamber. The first control module and the first wireless transceiver module are provided on the inner side of the upper part of the mounting groove. The main laser rangefinder, the auxiliary laser rangefinder, and the tilt measuring instrument are all connected to the first control module. The first control module is connected to the first wireless transceiver module. The first wireless transceiver module is connected to the second wireless transceiver module. The second wireless transceiver module is connected to the second control module.

[0015] A handle can be fixedly installed on the outer side of the lower end of the aforementioned adjusting screw.

[0016] This utility model has a reasonable and compact structure. When measuring the track gauge between rails, the rail holder is installed on the rail being measured. The rotating seat is adjusted to a horizontal position by adjusting the screw. In this way, the main laser rangefinder can measure the distance 16mm below the top surface of the rail opposite the rail holder on the left side of the rotating seat. Then, the distance is added to the width of the rotating seat to calculate the track gauge between the two rails. The width of the rotating seat can be designed as needed. The non-contact laser measurement technology avoids the measuring instrument from contacting both rails at the same time, thus avoiding measurement errors caused by wear, vibration, and inconsistent downward pressure. By adjusting the screw and the rail holder, the main laser rangefinder can be quickly installed on the rail, reducing the workload of the operator and improving the stability of the portable five-point laser track gauge measurement operation. The main laser rangefinder can improve the measurement accuracy. Attached Figure Description

[0017] Appendix Figure 1 These are schematic diagrams of the main structure of embodiments one through seven of this utility model when in use.

[0018] Appendix Figure 2 This is a schematic diagram of the left-side structure when the present invention is in use according to embodiments one to seven.

[0019] Appendix Figure 3 This is a top view of the structure of Embodiments 1 to 7 of this utility model during use.

[0020] Appendix Figure 4 This is a schematic diagram of the left-side cross-sectional structure when the present invention is in use according to embodiments one to seven.

[0021] Appendix Figure 5 This is a schematic diagram of the circuit structure of Embodiment Six of this utility model.

[0022] The codes in the attached diagram are as follows: 1 is the fixed base, 2 is the rotating base, 3 is the main laser rangefinder, 4 is the rail bracket, 5 is the adjusting screw, 6 is the auxiliary laser rangefinder, 7 is the tilt measuring instrument, 8 is the support plate, 9 is the hinge shaft, 10 is the front locking bolt, 11 is the rear locking bolt, and 12 is the handle. Detailed Implementation

[0023] This utility model is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of this utility model and the actual situation.

[0024] In this utility model, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as the positional relationships of front, back, top, bottom, left, and right, which are based on the instructions attached. Figure 1 The orientation of the layout is determined by the direction of the map.

[0025] The present invention will be further described below with reference to the embodiments and accompanying drawings: Example 1: As shown in the attached document Figures 1 to 4 As shown, the portable five-point laser gauge includes a fixed base 1, a rotating base 2, a main laser rangefinder 3, and a rail clamp 4 that can be mounted on the outside of the rail. The fixed base 1 is fixedly installed on the left side of the rail clamp 4. The upper side of the fixed base 1 is hinged to the lower right side of the rotating base 2. The rotating base 2 has a main chamber with an opening to the left in the center of the left side. The main laser rangefinder 3 is installed in the main chamber. The lower left side of the fixed base 1 has an adjustment screw hole that runs vertically through it. An adjustment screw 5 with its upper end in contact with the lower side of the rotating base 2 is screwed into the adjustment screw hole.

[0026] According to the requirements, a spherical wear-resistant shell is fixedly installed on the upper end of the adjusting screw 5. The wear-resistant shell can be a nylon spherical shell, which can reduce the friction between the upper end of the adjusting screw 5 and the lower side of the rotating seat 2 and extend the service life. The main laser rangefinder 3 is a known technology, such as the W-80X laser rangefinder. The rail bracket 4 is a known technology, such as the rail bracket described in Chinese patent document CN221645445U.

[0027] When measuring the track gauge between rails, the rail clamp 4 is installed on the rail being measured. The rotating seat 2 is adjusted to a horizontal position by adjusting screw 5. In this way, the main laser rangefinder 3 can measure the distance 16mm below the top surface of the rail opposite the rail clamp 4 on the left side of the rotating seat 2. Then, the distance is added to the width of the rotating seat 2 to calculate the track gauge between the two rails. The width of the rotating seat 2 can be designed as needed (e.g., 20mm, 30mm, 40mm). The use of non-contact laser measurement technology avoids the measuring instrument from contacting both rails simultaneously, thus avoiding measurement errors caused by wear, vibration, and inconsistent downward pressure. By adjusting screw 5 and rail clamp 4, the main laser rangefinder 3 can be quickly installed with the rail, reducing the workload of the operator and improving the stability of the portable five-point laser gauge measurement operation. The main laser rangefinder 3 can improve the measurement accuracy.

[0028] This portable five-point laser gauge can avoid the need to move large railway maintenance machinery to prevent the chassis from interfering with the calibration work, thus improving calibration efficiency. It can also prevent operators from entering under the chassis of large railway maintenance machinery, thereby reducing the safety risks for operators.

[0029] This portable five-point laser gauge can perform measurement operations on a single rail, thus avoiding the malfunction of electronic equipment in the track system caused by connecting two rails. The portable five-point laser gauge does not require insulation treatment for the measuring equipment, improving the safety of the measurement operation and reducing manufacturing costs.

[0030] The portable five-point laser gauge can be further optimized and / or improved according to actual needs: Example 2: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown, four auxiliary chambers with openings facing left are distributed circumferentially on the left side of the rotating base 2, and an auxiliary laser rangefinder 6 is installed in each auxiliary chamber.

[0031] According to the requirements, the auxiliary laser rangefinder 6 is a known technology. The two upper auxiliary laser rangefinders 6 are arranged at intervals, and the two lower auxiliary laser rangefinders 6 are arranged at intervals. The four auxiliary laser rangefinders 6 are located at the four corners of the rectangle of the rotating base 2.

[0032] During measurement, the rail clamp 4 is installed on one of the rails. The two auxiliary laser rangefinders 6 above are aimed at the upper edge of the gauge angle on the top surface of the rail opposite the rail clamp 4. If the wear on the rail top is too great, the measurement value of the auxiliary laser rangefinders 6 will be too large. In this case, the angle of the rotating seat 2 is adjusted by adjusting the screw 5, so that the position of the two auxiliary laser rangefinders 6 below is also moved up. Finally, the main laser rangefinder 3 is aimed at the inner side of the working edge 16mm below the top surface of the rail opposite the rail clamp 4.

[0033] When the beams emitted by the four auxiliary laser rangefinders 6 form a stable spot at the measurement point corresponding to the rail clamp 4, it indicates that the angle of the rotating seat 2 meets the measurement requirements (the orientation of the rotating seat 2 is correct, the left side of the rotating seat 2 is parallel to the center line of the track and there is no deflection). At this time, the value obtained by the main laser rangefinder 3 is the distance L between the left side of the main laser rangefinder 3 and the inner side (right side) of the working edge of the rail opposite the rail clamp 4. The distance between the left side of the rotating seat 2 and the inner side of the working edge of the rail inside the rail clamp 4 (the width of the rotating seat 2) is W. In this way, the rail gauge G can be calculated according to the formula G=W+L. The width W of the rotating seat 2 can be designed as needed (such as 20mm, 30mm, 40mm).

[0034] This application adopts a non-contact laser measurement method, using four auxiliary laser rangefinders 6 to form a measurement reference surface, and the main laser rangefinder 3 to take readings, ensuring the correctness of the rotating seat 2's posture and the stability of the measurement accuracy, avoiding errors caused by track wear, vibration, inconsistent downward pressure, and frequent bumps during daily carrying and use that could lead to probe inaccuracy.

[0035] Example 3: As an optimization of the above examples, as shown in the appendix. Figure 1 As shown, the left front side of the rotating base 2 is provided with a front mounting groove with an opening facing forward, and the left rear side of the rotating base 2 is provided with a rear mounting groove with an opening facing backward. Inclination measuring instruments 7 are installed in both the front mounting groove and the rear mounting groove.

[0036] Depending on the requirements, the tilt measuring instrument 7 utilizes existing known technology, such as a digital display magnetic tilt meter or a high-precision dual-axis tilt meter. During use, this setup allows for real-time measurement of the levelness of the rotating base 2, and the angle θ between the main laser rangefinder 3 and the horizontal plane. The height difference H (level difference) between the reference points 16mm below the top surfaces of the two rails is then calculated using the following formula. ; Where L is the measurement value of the main laser rangefinder 3, such as 1435mm, and the angle θ between the main laser rangefinder 3 and the horizontal plane is a small angle (θ is less than 5°). In the formula, θ is in radians.

[0037] By setting up two inclination measuring instruments 7, the portable five-point laser gauge can easily read the values ​​when measuring the rail on the left or right side. At the same time, the two inclination measuring instruments 7 can serve as a reference for each other to calibrate the angle θ between the main laser rangefinder 3 and the horizontal plane.

[0038] Example 4: As an optimization of the above examples, as shown in the appendix. Figures 1 to 4 As shown, the fixed base 1 is in the shape of an inverted L. Support plates 8 are fixedly installed on the upper right side of the fixed base 1 corresponding to the front and rear positions of the rotating base 2. The front side of the support plate 8 is provided with a hinge hole that runs through the front and rear. The front side of the lower part of the rotating base 2 corresponding to the hinge hole is provided with a rotating hole that runs through the front and rear. A hinge shaft 9 is installed in the rotating hole. The front end and rear end of the hinge shaft 9 are rotatably installed in the hinge hole at the corresponding position.

[0039] As required, a nylon sleeve is fitted between the outer side of the hinge shaft 9 and the inner side of the rotating hole to reduce wear between the hinge shaft 9 and the rotating seat 2. During use, the support plate 8 limits the back-and-forth swing of the rotating seat 2, thereby improving the measurement accuracy of the main laser rangefinder 3 inside the rotating seat 2. At the same time, the support plate 8 ensures a certain gap between the lower right side of the rotating seat 2 and the upper side of the fixed seat 1, so that the lower right side of the rotating seat 2 and the upper side of the fixed seat 1 can be prevented from rubbing against each other when the rotating seat 2 rotates. This allows the rotating seat 2 to rotate flexibly while ensuring measurement accuracy.

[0040] The fixed seat 1, rotating seat 2 and rail clamp 4 are installed together. The fixed seat 1 is in the shape of an inverted L, which ensures that the position of the main laser rangefinder 3 corresponds to the position 16mm below the top surface of the rail opposite the rail clamp 4.

[0041] Example 5: As an optimization of the above examples, as shown in the appendix. Figure 1 , 4 As shown, the front end of the hinge shaft 9 is provided with a front locking screw hole that opens forward, and a front locking bolt 10 is screwed into the front locking screw hole. The rear end of the head of the front locking bolt 10 is in contact with the front side of the front support plate 8. The rear end of the hinge shaft 9 is provided with a rear locking screw hole that opens backward, and a rear locking bolt 11 is screwed into the rear locking screw hole. The front end of the head of the rear locking bolt 11 is in contact with the rear side of the rear support plate 8.

[0042] As required, the hinge hole is a stepped hole. During use, this design allows for a tighter connection between the hinge shaft 9 and the support plate 8, preventing the rotating seat 2 from separating from the support plate 8 due to the hinge shaft 9 moving back and forth during rotation.

[0043] Example 6: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figure 5, it also includes a first control module, a first wireless transceiver module, a second control module, and a second wireless transceiver module. The upper right side of the rotating seat 2 is provided with a mounting groove. The lower part of the mounting groove is interconnected with the right side of the main chamber and the right side of the auxiliary chamber. The upper inner side of the mounting groove is provided with the first control module and the first wireless transceiver module. The main laser rangefinder 3, the auxiliary laser rangefinder 6, and the tilt measuring instrument 7 are all connected to the first control module. The first control module is connected to the first wireless transceiver module, the first wireless transceiver module is connected to the second wireless transceiver module, and the second wireless transceiver module is connected to the second control module.

[0044] Based on the requirements, the first control module is a well-known microcontroller, such as the STM32 series controller, and the first wireless transceiver module is a well-known wireless communication module, such as the HC-05 Bluetooth module, 4G / 5G, or WiFi communication module. The second wireless transceiver module and the second control module together form a well-known terminal device, such as a mobile phone or computer. This allows the data collected by the main laser rangefinder 3 and the tilt meter 7 to be uploaded to the engineering management system or cloud platform in real time. Operators can view the measurement data in real time on their mobile phones or computers, making it convenient to analyze the results. This realizes the instant uploading and remote sharing of measurement data, facilitating collaborative work and remote monitoring by multiple people.

[0045] The data collected by the main laser rangefinder 3 and the tilt meter 7 can also be transmitted to the operator's mobile phone in real time, so that the operator can view the measurement data and analyze the results in real time.

[0046] This portable five-point laser gauge can be made of aluminum alloy, making it lightweight. The fixed base 1, rotating base 2, main laser rangefinder 3, rail clamp 4, auxiliary laser rangefinder 6, and tilt measuring instrument 7 can be disassembled, making it easy to carry.

[0047] This portable five-point laser gauge can simplify the operation steps for operators during track gauge measurement, reduce labor intensity and improve work efficiency. It is also easy to carry. At the same time, the handheld terminal design facilitates one-handed operation, further improving operation efficiency.

[0048] Example 7: As an optimization of the above examples, as shown in the appendix. Figure 1 , 2 As shown in Figure 3, a handle 12 is fixedly installed on the outer side of the lower end of the adjusting screw 5.

[0049] Depending on the requirements, the handle 12 can be made of existing known technology, such as a tortoise shell handle or a knurled handwheel. During use, this design facilitates gripping the adjusting screw 5 when adjusting the tilt angle of the rotating seat 2, reducing hand fatigue. It also allows for convenient and quick adjustment of the angle between the beam emitted by the main laser rangefinder 3 and the horizontal plane by rotating the handle 12. The secondary laser rangefinder 6 serves a calibration function, ensuring that the measuring point of the main laser rangefinder 3 is always located 16mm below the top surface of the rail opposite the rail bracket 4.

[0050] The above technical features constitute various embodiments of this utility model, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A portable five-point laser gauge for measuring track distance, characterized in that... It includes a fixed base, a rotating base, a main laser rangefinder, and a rail clamp that can be mounted on the outside of the rail. The fixed base is fixedly installed on the left side of the rail clamp. The upper side of the fixed base is hinged to the lower right side of the rotating base. The rotating base has a main chamber with an opening to the left in the center of the left side. The main laser rangefinder is installed in the main chamber. The lower left side of the fixed base has an adjustment screw hole that runs vertically through it. An adjustment screw with its upper end in contact with the lower side of the rotating base is screwed into the adjustment screw hole.

2. The portable five-point laser gauge ruler according to claim 1, characterized in that... There are four auxiliary chambers with openings facing left on the left side of the rotating base, and each auxiliary chamber is equipped with an auxiliary laser rangefinder.

3. The portable five-point laser gauge ruler according to claim 2, characterized in that... The left front of the rotating base has a front mounting groove with an opening facing forward, and the left rear side of the rotating base has a rear mounting groove with an opening facing backward. Inclination measuring instruments are installed in both the front and rear mounting grooves.

4. The portable five-point laser gauge ruler according to claim 1, 2, or 3, characterized in that... The fixed base is in the shape of an inverted L. Support plates are fixedly installed on the upper right side of the fixed base corresponding to the front and rear positions of the rotating base. The front side of the support plate is provided with a hinge hole that runs through the front and rear. The front side of the lower part of the rotating base corresponding to the hinge hole is provided with a rotating hole that runs through the front and rear. A hinge shaft is installed in the rotating hole. The front end and rear end of the hinge shaft are rotatably installed in the hinge hole at the corresponding position.

5. The portable five-point laser gauge ruler according to claim 4, characterized in that... The hinge shaft has a front locking screw hole with an opening facing forward. A front locking bolt is screwed into the front locking screw hole. The rear end of the head of the front locking bolt contacts the front side of the front support plate. The hinge shaft has a rear locking screw hole with an opening facing backward. A rear locking bolt is screwed into the rear locking screw hole. The front end of the head of the rear locking bolt contacts the rear side of the rear support plate.

6. The portable five-point laser gauge ruler according to claim 3 or 5, characterized in that... It also includes a first control module, a first wireless transceiver module, a second control module, and a second wireless transceiver module. The upper right side of the rotating seat is provided with a mounting groove. The lower part of the mounting groove is interconnected with the right side of the main chamber and the right side of the auxiliary chamber. The upper inner side of the mounting groove is provided with the first control module and the first wireless transceiver module. The main laser rangefinder, the auxiliary laser rangefinder, and the tilt measuring instrument are all connected to the first control module. The first control module is connected to the first wireless transceiver module. The first wireless transceiver module is connected to the second wireless transceiver module. The second wireless transceiver module is connected to the second control module.

7. The portable five-point laser gauge ruler according to claim 4, characterized in that... It also includes a first control module, a first wireless transceiver module, a second control module, and a second wireless transceiver module. The upper right side of the rotating seat is provided with a mounting groove. The lower part of the mounting groove is interconnected with the right side of the main chamber and the right side of the auxiliary chamber. The upper inner side of the mounting groove is provided with the first control module and the first wireless transceiver module. The main laser rangefinder, the auxiliary laser rangefinder, and the tilt measuring instrument are all connected to the first control module. The first control module is connected to the first wireless transceiver module. The first wireless transceiver module is connected to the second wireless transceiver module. The second wireless transceiver module is connected to the second control module.

8. The portable five-point laser gauge ruler according to claim 1, 2, 3, or 5, characterized in that... A handle is fixedly installed on the outer side of the lower end of the adjusting screw.

9. The portable five-point laser gauge ruler according to claim 4, characterized in that... A handle is fixedly installed on the outer side of the lower end of the adjusting screw.

10. The portable five-point laser gauge ruler according to claim 6, characterized in that... A handle is fixedly installed on the outer side of the lower end of the adjusting screw.

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