High-low temperature automatic test device for high-precision digital display gauging rule

Abstract

A high-precision digital display gauging rule high and low temperature automatic test device comprises a control system, a test temperature box and a test device, the control system is arranged outside the test temperature box, the test device is installed in the test temperature box, the test device comprises a base, a reference platform, a swing rod and a gauge measuring seat, and the base is installed on the ground of the inner side of the test temperature box. The upper side of the left end of the reference platform is connected with the swing rod support, the swing rod is hinged to the swing rod support, the right section of the swing rod is located above the reference platform, the left section of the swing rod protrudes out of the left end of the reference platform, the upper side of the right end of the reference platform is connected with the superelevation gauge capable of supporting the bottom of the right end of the swing rod, and the bottom of the reference platform is provided with a superelevation gauge driving assembly. The track gauge measuring seat comprises a track gauge fixed measuring seat and a track gauge adjustable measuring seat which are arranged on a swing rod, and an adjustable measuring seat driving assembly is arranged on the lower side of the left end of the swing rod. Measurement and data transmission of the digital display gauging rule can be automatically completed, an operator does not need to enter an incubator, and efficiency and precision are effectively improved.

Description

Technical Field

[0001] The invention relates to an experimental device of a measuring instrument, in particular to a high-precision digital display track gauge high and low temperature automatic testing device. Background Art

[0002] Railway track gauges are a common measuring tool used in railway track inspection and maintenance. Their primary function is to ensure that track conforms to design standards and safe operating requirements by measuring key track geometry, thereby ensuring smooth and safe train travel. High-precision digital track gauges, with their digital display and automated functions, offer advantages in efficiency, accuracy, and data processing, making them widely used. To safely, accurately, and efficiently perform mandatory indication error testing of digital track gauges in extreme high and low temperature environments (-30°C to +55°C), the extreme cold of -30°C and the unbearable heat of +55°C. Prolonged exposure to these extremes is not only extremely uncomfortable but also poses health risks such as frostbite and heatstroke. To overcome the significant difficulties, risks, inefficiencies, and errors associated with manual operation in environmental test chambers, it is necessary to develop a high-precision, automated high and low temperature testing device for digital track gauges. Summary of the Invention

[0003] The purpose of the present invention is to address the defects of the above-mentioned prior art and provide a high-precision digital display track gauge high and low temperature automatic testing device, which can automatically complete the measurement and data transmission of the digital display track gauge without the operator entering the temperature box, effectively improving efficiency and accuracy.

[0004] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a high-precision digital display gauge high and low temperature automatic testing device, including a control system, a test temperature chamber and a test device, the control system is arranged outside the test temperature chamber, the test device is installed in the test temperature chamber, the test device includes a base, a reference platform, a pendulum and a gauge measuring seat, the base is fixedly mounted on the ground inside the test temperature chamber, the reference platform is connected to the upper side of the base through a height pick, the levelness of the reference platform can be adjusted by adjusting the height pick, the upper side of the left end of the reference platform is connected to the pendulum support, the pendulum is hinged to the pendulum support at the middle position, and the right section of the pendulum is located at the reference The upper side of the right end of the reference platform is connected to an ultra-high gauge that can support the bottom of the right end of the pendulum arm. The bottom of the reference platform is provided with an ultra-high gauge driving assembly that can drive the ultra-high gauge to slide left and right relative to the reference platform. The gauge measuring seat includes a fixed gauge measuring seat and an adjustable gauge measuring seat. The fixed gauge measuring seat is fixedly connected to the upper side of the right end of the pendulum arm, and the adjustable gauge measuring seat is connected to the upper side of the left end of the pendulum arm. The lower side of the left end of the pendulum arm is provided with an adjustable measuring seat driving assembly that can drive the adjustable gauge measuring seat to move left and right relative to the fixed gauge measuring seat.

[0005] A further technical solution of the present invention is: the super-high gauge is provided with multiple horizontal step surfaces that can support the bottom of the right end of the rocker arm, and the horizontal step surfaces gradually rise from left to right. The bottom end of the super-high gauge is connected with a guide rail, and the upper surface of the reference platform is provided with a guide rail limit block that cooperates with the guide rail at the bottom end of the super-high gauge. The super-high gauge drive assembly is connected to the guide rail and can drive the guide rail of the super-high gauge to slide left and right relative to the guide rail limit block.

[0006] A further technical solution of the present invention is: the ultra-high gauge drive assembly includes a servo motor, an elastic coupling, a screw, a screw nut and a screw mounting seat, the screw mounting seat is installed on the bottom surface of the reference platform, the screw is installed in the screw mounting seat, the servo motor is installed on the bottom surface of the reference platform through a mounting bracket, the output end of the servo motor is connected to the elastic coupling, the elastic coupling is then connected to one end of the screw, the screw nut is connected in the screw, and the screw nut is connected to the bottom guide rail of the ultra-high gauge through a connecting device.

[0007] A further technical solution of the present invention is: the gauge-adjustable measuring seat includes a guide rail mounting seat, a dovetail groove guide rail and a gauge sliding block, the guide rail mounting seat is fixedly mounted on the upper side of the left end of the rocker arm, the adjustable measuring seat driving assembly includes a worm gear stepper motor, a motor worm and a worm connecting plate, the worm gear stepper motor is mounted on the lower side of the left end of the rocker arm, the output end of the worm gear stepper motor is connected to the motor worm, the motor worm passes upward through the rocker arm and is connected to the worm connecting plate, the dovetail groove guide rail is arranged on the upper surface of the guide rail mounting seat, the gauge sliding block is mounted on the dovetail groove guide rail on the upper side of the guide rail mounting seat, the left side of the worm connecting plate is connected to the gauge sliding block, the worm gear stepper motor works, the motor worm rotates, and the worm connecting plate can drive the gauge sliding block to slide left and right relative to the dovetail groove guide rail.

[0008] A further technical solution of the present invention is: an upwardly concave groove is provided at the bottom of the right end of the rocker arm, the superelevation measuring wheel is installed in the groove through the superelevation measuring wheel axis, and the bottom end of the superelevation measuring wheel protrudes out of the groove and can directly contact the superelevation gauge.

[0009] A further technical solution of the present invention is that a tension spring is connected between the bottom surface of the rocker arm on the right side of the rocker arm support and the upper surface of the reference platform.

[0010] A further technical solution of the present invention is that a V-shaped bracket for supporting a digital track gauge is further provided on the upper surface of the rocker arm.

[0011] A further technical solution of the present invention is that a level bubble for observing the horizontality of the pendulum rod is provided in the middle of the upper surface of the pendulum rod.

[0012] The high-precision digital track gauge automatic high and low temperature testing device of the present invention has the following beneficial effects: 1. The present invention arranges the testing device in a test temperature chamber, and the control system is arranged outside the test temperature chamber. The testing device can automatically complete the detection in the test temperature chamber and transmit the data to the control system. The testing device automatically performs the measurement action of the digital track gauge in the test temperature chamber, deeply integrating multiple fields of technology such as precision mechanical design, automatic control, wireless communication, extreme environment engineering, and software integration, and completely replacing manual operation in extreme environments; 2. After each measurement is completed, the measurement result (indication) of the digital track gauge is displayed. The data can be transmitted wirelessly to the receiving device (control system) outside the test chamber via Bluetooth. The operator can obtain the measurement data in real time without entering the test chamber, completely eliminating the need for personnel to enter the extreme temperature and humidity environment, and ensuring the personal safety of the test personnel; 3. There is no need to frequently open and close the test chamber door, which maintains temperature stability and shortens the waiting time for temperature stabilization. Automated operation is faster and more consistent than manual operation, avoiding the risk of frostbite / heatstroke and clumsy operation, and significantly improving test efficiency; 4. Programmed automatic operation is more in line with the requirements of standard test procedures. The ultra-high gauge drive assembly adopts a screw nut pair and a guide rail limit block, and the adjustable measuring head drive assembly adopts a worm gear, a dovetail groove guide rail (to ensure the straightness of the gauge sliding), etc. to ensure the rigidity and positioning accuracy of the system, ensure high precision and repeatability of displacement / angle, and greatly improve test accuracy.

[0013] The following is a further description of a high-precision digital display track gauge high and low temperature automatic testing device of the present invention in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a high-precision digital display track gauge high and low temperature automatic testing device of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 This is a stereoscopic diagram of a high-precision digital display track gauge high and low temperature automatic testing device of the present invention; Explanation of the accompanying numbers: 1-worm gear stepper motor, 2-rocker, 3-guide rail mounting seat, 4-track gauge sliding block, 5-dovetail guide rail, 6-worm connecting plate, 7-motor worm, 8-V-shaped bracket, 9-rocker support, 10-rotation axis, 11-reference platform, 12-tension spring, 13-track gauge fixing seat, 14-superelevation measuring wheel spindle, 15-superelevation measuring wheel, 16-superelevation gauge, 17-guide rail limit block, 18-screw mounting seat, 19-screw, 20-screw nut, 21-height pick, 22-elastic coupling, 23-servo motor, 24-base, 25-level bubble. DETAILED DESCRIPTION

[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of examples with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "horizontal", "bottom", "inside", "outside", etc. are orientations or positional relationships facing the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0016] like Figures 1 to 3 As shown, the present invention is a high-precision digital track gauge automatic high and low temperature testing device, which is used to test the track gauge and superelevation indication errors of the track gauge during high and low temperature tests of the digital track gauge. The present invention includes a control system, a test incubator, and a test device. The control system is arranged outside the test incubator. The control system is a computer. The control system can receive the measurement data of the digital track gauge and control the temperature of the test incubator. The test incubator is a large insulation box that can be maintained at a specific temperature. The control system and the test incubator are existing devices, not shown in the figure, and are not described in detail here. The test device is installed in the test incubator. The control system can adjust the temperature in the test incubator according to the test requirements. The digital track gauge is a digital track gauge with Bluetooth transmission function. The detection data can be transmitted to the control system via Bluetooth. The digital track gauge is an existing device, and its structure is not described in detail here.

[0017] like Figures 1 to 3 As shown, the test apparatus includes a base 24, a reference platform 11, a pendulum arm 2, and a gauge measuring stand. The base 24 is fixedly mounted on the inner floor of the test chamber, with the bottom of the base 24 pre-buried beneath the floor. The reference platform 11 is connected to the upper side of the base 24 via a height pick 21. A height pick 21 is connected between the base 24 and either side of the base 24 and the bottom of the reference platform 11. Adjusting the height pick 21 allows the levelness of the reference platform 11 to be adjusted. During adjustment, a bubble level (not shown) can be placed in the middle of the upper surface of the reference platform 11 to determine whether the reference platform 11 is level. The upper left end of the reference platform 11 is connected to the pendulum arm support 9. The pendulum arm 2 is hinged to the support 9 near its center via a rotation axis 10. The right section of the pendulum arm 2 is located above the reference platform 11 and can swing left and right relative to the support 9. The left section of the pendulum arm 2 protrudes from the left end of the reference platform 11 and continues to the left. The left section of the pendulum arm 2 protrudes from the left end of the reference platform 11 and is located above the left side of the base 24. A tension spring 12 is connected between the bottom surface of the pendulum rod 2 on the right side of the pendulum rod support 9 and the upper surface of the reference platform 11. The tension spring 12 can increase the stability of the pendulum rod 2 and prevent the pendulum rod 2 from swinging left and right significantly to affect the stability of the test device.

[0018] like Figures 1 to 3 As shown, the upper right end of the reference platform 11 is connected to an over-elevation gauge 16 capable of supporting the bottom right end of the pendulum 2. A over-elevation gauge drive assembly is provided at the bottom of the reference platform 11, capable of driving the over-elevation gauge 16 to slide left and right relative to the reference platform 11. The over-elevation gauge 16 is a metal block with an overall outer profile resembling a right triangle. It is provided with multiple horizontal stepped surfaces capable of supporting the bottom right end of the pendulum 2, with the horizontal stepped surfaces gradually increasing from left to right. A guide rail is connected to the bottom end of the over-elevation gauge 16. A guide rail stopper 17 is provided on the upper surface of the reference platform 11, which interacts with the guide rail at the bottom end of the over-elevation gauge 16. The over-elevation gauge drive assembly is connected to the guide rail and is capable of driving the guide rail of the over-elevation gauge 16 to slide left and right relative to the guide rail stopper 17. In this embodiment, the ultrahigh gauge drive assembly includes a servo motor 23, an elastic coupling 22, a screw 19, a screw nut 20, and a screw mounting base 18. The screw mounting base 18 is mounted on the bottom surface of the reference platform 11, and the screw 19 is mounted within the screw mounting base 18. The servo motor 23 is mounted on the bottom surface of the reference platform 11 via a mounting bracket. The servo motor 23 is connected to a control system via an electrical circuit, which controls the operation of the servo motor 23. The output end of the servo motor 23 is connected to the elastic coupling 22, which in turn is connected to one end of the screw 19. The screw nut 20 is connected to the screw 19 and is connected to the guide rail at the bottom of the ultrahigh gauge 16 via a connecting device. When the servo motor 23 drives the screw 19 to move, the screw nut 20 can drive the ultrahigh gauge 16 to move left and right relative to the reference platform 11.

[0019] like Figures 1 to 3 As shown, the gauge measuring stand comprises a fixed gauge measuring stand 13 and an adjustable gauge measuring stand. The fixed gauge measuring stand 13 is fixedly connected to the upper right end of the pendulum 2, while the adjustable gauge measuring stand is connected to the upper left end of the pendulum 2. An adjustable gauge measuring stand drive assembly is provided on the lower left end of the pendulum 2, capable of driving the adjustable gauge measuring stand left and right relative to the fixed gauge measuring stand 13. The adjustable gauge measuring stand comprises a guide rail mounting stand 3, a dovetail guide rail 5, and a gauge slider 4. The guide rail mounting stand 3 is fixedly mounted to the upper left end of the pendulum 2. The dovetail guide rail 5 is provided on the upper surface of the guide rail mounting stand 3, and the gauge slider 4 is mounted on the dovetail guide rail 5 on the upper side of the guide rail mounting stand 3. The adjustable measuring head drive assembly includes a worm gear stepper motor 1, a motor worm 7, and a worm coupling plate 6. The worm gear stepper motor 1 is mounted below the left end of the pendulum 2 and is connected to a control system via circuitry. The control system controls the operation of the worm gear stepper motor 1. The output of the worm gear stepper motor 1 is connected to the motor worm 7, which then passes upward through the pendulum 2 and connects to the worm coupling plate 6. The left side of the worm coupling plate 6 is connected to the gauge slider 4. When the worm gear stepper motor 1 is operating, the motor worm 7 rotates, causing the worm coupling plate 6 to drive the gauge slider 4 to slide left and right relative to the dovetail guide rail 5, which in turn moves left and right relative to the pendulum 2.

[0020] like Figure 1 、 Figure 3 As shown, an upwardly recessed groove is provided at the bottom right end of the pendulum 2. The superelevation measuring wheel 15 is mounted in the groove via the superelevation measuring wheel spindle 14. The bottom end of the superelevation measuring wheel 15 protrudes out of the groove, enabling direct contact with the superelevation gauge 16. The installation of the superelevation measuring wheel 15 improves the precision of contact between the bottom right end of the pendulum 2 and the horizontal stepped surface of the superelevation gauge 16. When the superelevation gauge 16 is moved horizontally, the superelevation measuring wheel 15 can smoothly slide across the different horizontal stepped surfaces of the superelevation gauge 16. Also provided on the upper surface of the pendulum 2 are two V-shaped brackets 8 for supporting the digital gauge ruler. A vial 25 is located in the middle of the upper surface of the pendulum 2 for observing the horizontality of the pendulum 2.

[0021] When the present invention is used for testing, the horizontal zero position adjustment is performed first. First, the superelevation gauge 16 is moved to the corresponding position when the pendulum 2 is in a horizontal state. The superelevation measuring wheel 15 will contact the corresponding horizontal step surface of the superelevation gauge 16 under the action of the weight of the pendulum 2. By adjusting the height pick 21, the height difference between the two ends is read with a coincidence level. When the height difference meets the requirements of the relevant standards, the water bubble is adjusted to the center and the pendulum 2 is adjusted to a horizontal state; secondly, the servo motor 23 is turned on the computer (control system) outside the test temperature chamber to move the horizontal step surface of the superelevation gauge 16 to the corresponding horizontal position and make the superelevation measuring wheel 15 contact the horizontal step surface to complete the horizontal zero position adjustment. Next, place the digital gauge ruler to be tested on the gauge slider 4 and the gauge fixed measuring base 13 above the pendulum 2. Close the test chamber door and turn on the test temperature (press the temperature control switch). When the constant temperature time meets the standard requirements, read the gauge and superelevation readings on the gauge ruler from the computer. The difference between the reading at that point and the actual value of the test device is the indication error of the digital gauge ruler at that temperature. The actual value of the test device is the actual distance and superelevation value from the measuring point of the gauge slider 4 to the measuring point of the gauge fixed measuring base 13. Once the gauge slider 4 is fixed in position, the actual value is displayed on the computer. Use the computer control software to move the gauge slider 4 and superelevation gauge 16 to change the gauge and superelevation test points. The difference between the reading at each point and the actual value of the test device is the indication error of the digital gauge ruler at that point. By changing the test chamber temperature, the indication error of the digital gauge ruler at different temperatures can be detected using the aforementioned method.

[0022] The above embodiments are only preferred embodiments of the present invention. The structure of the present invention is not limited to the forms listed in the above embodiments. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision digital display track gauge high and low temperature automatic testing device, characterized in that: The invention comprises a control system, a test temperature chamber and a test device. The control system is arranged outside the test temperature chamber, and the test device is arranged inside the test temperature chamber. The test device comprises a base (24), a reference platform (11), a pendulum (2) and a gauge measuring seat. The base (24) is fixedly mounted on the ground inside the test temperature chamber. The reference platform (11) is connected to the upper side of the base (24) through a height top pick (21). The horizontality of the reference platform (11) can be adjusted by adjusting the height top pick (21). The upper left end of the reference platform (11) is connected to the pendulum support (9). The pendulum (2) is hinged to the pendulum support (9) at the middle position. The right section of the pendulum (2) is located above the reference platform (11) and the pendulum (2) can be moved to the left relative to the pendulum support (9). Swinging right, the left section of the pendulum (2) protrudes from the left end of the reference platform (11) and continues to extend to the left, the upper side of the right end of the reference platform (11) is connected to an ultra-high gauge (16) capable of supporting the bottom of the right end of the pendulum (2), and the bottom of the reference platform (11) is provided with an ultra-high gauge drive component capable of driving the ultra-high gauge (16) to slide left and right relative to the reference platform (11), and the gauge measuring seat includes a gauge fixed measuring seat (13) and a gauge adjustable measuring seat, the gauge fixed measuring seat (13) is fixedly connected to the upper side of the right end of the pendulum (2), the gauge adjustable measuring seat is connected to the upper side of the left end of the pendulum (2), and the lower side of the left end of the pendulum (2) is provided with an adjustable measuring seat drive component capable of driving the gauge adjustable measuring seat to move left and right relative to the gauge fixed measuring seat (13).

2. A high-precision digital display track gauge high and low temperature automatic testing device as claimed in claim 1, characterized in that: The superelevation gauge (16) is provided with a plurality of horizontal step surfaces capable of supporting the bottom right end of the swing rod (2), and the horizontal step surfaces gradually rise from left to right. The bottom end of the superelevation gauge (16) is connected to a guide rail, and the upper surface of the reference platform (11) is provided with a guide rail limit block (17) that cooperates with the guide rail at the bottom end of the superelevation gauge (16). The superelevation gauge drive assembly is connected to the guide rail and can drive the guide rail of the superelevation gauge (16) to slide left and right relative to the guide rail limit block (17).

3. A high-precision digital display track gauge high and low temperature automatic testing device as claimed in claim 2, characterized in that: The ultra-high gauge drive assembly includes a servo motor (23), an elastic coupling (22), a screw (19), a screw nut (20) and a screw mounting seat (18), wherein the screw mounting seat (18) is mounted on the bottom surface of the reference platform (11), the screw (19) is mounted in the screw mounting seat (18), the servo motor (23) is mounted on the bottom surface of the reference platform (11) through a mounting bracket, the output end of the servo motor (23) is connected to the elastic coupling (22), the elastic coupling (22) is further connected to one end of the screw (19), the screw nut (20) is connected to the screw (19), and the screw nut (20) is connected to the bottom guide rail of the ultra-high gauge (16) through a connecting device.

4. A high-precision digital display track gauge high and low temperature automatic testing device as claimed in claim 1, characterized in that: The gauge adjustable measuring seat comprises a guide rail mounting seat (3), a dovetail groove guide rail (5) and a gauge sliding block (4), wherein the guide rail mounting seat (3) is fixedly mounted on the upper left end of the swing rod (2), and the adjustable measuring seat driving assembly comprises a worm gear stepping motor (1), a motor worm (7) and a worm connecting plate (6), wherein the worm gear stepping motor (1) is mounted on the lower left end of the swing rod (2), and the output end of the worm gear stepping motor (1) is connected to the motor worm (7), and the motor worm (7) is connected to the motor worm (7). The dovetail groove guide rail (5) is upwardly passed through the rocker arm (2) and connected to the worm connecting plate (6). The dovetail groove guide rail (5) is arranged on the upper surface of the guide rail mounting seat (3). The gauge sliding block (4) is mounted on the dovetail groove guide rail (5) on the upper side of the guide rail mounting seat (3). The left side of the worm connecting plate (6) is connected to the gauge sliding block (4). When the worm gear stepping motor (1) works and the motor worm (7) rotates, the worm connecting plate (6) can drive the gauge sliding block (4) to slide left and right relative to the dovetail groove guide rail (5).

5. The high-precision digital display track gauge high and low temperature automatic testing device according to claim 1, characterized in that: The bottom of the right end of the swing rod (2) is provided with an upwardly concave groove, and the superelevation measuring wheel (15) is installed in the groove through the superelevation measuring wheel spindle (14), and the bottom end of the superelevation measuring wheel (15) protrudes out of the groove and can directly contact the superelevation gauge (16).

6. A high-precision digital display track gauge high and low temperature automatic testing device as claimed in claim 1, characterized in that: A tension spring (12) is connected between the bottom surface of the rocker arm (2) on the right side of the rocker arm support (9) and the upper surface of the reference platform (11).

7. The high-precision digital display track gauge high and low temperature automatic testing device according to claim 1, characterized in that: The upper surface of the rocker arm (2) is also provided with a V-shaped bracket (8) for supporting a digital track gauge.

8. The high-precision digital display track gauge high and low temperature automatic testing device according to claim 1, characterized in that: A level bubble (25) for observing the horizontality of the pendulum rod is provided in the middle of the upper surface of the pendulum rod (2).

Images