Device and method for measuring zero error of inclinometer and rail inspection equipment

Abstract

The invention relates to the technical field of track surveying and mapping, and discloses an inclinometer zero error measuring device, a measuring method thereof and track inspection equipment, and the inclinometer zero error measuring device comprises a machine shell with a containing cavity, a locking and releasing assembly fixedly arranged in the containing cavity, a measuring assembly movably arranged in the containing cavity and a lifting assembly. The locking and releasing assembly comprises at least one locking and releasing piece; the measuring assembly comprises a driving mechanism with a rotating shaft and a measuring mechanism, the measuring mechanism is in transmission connection with the rotating shaft, and at least two connecting pieces are arranged on the peripheral side of the rotating shaft at intervals and can rotate around the rotating shaft, so that the at least two connecting pieces are alternately aligned with the at least one locking and releasing piece; the lifting assembly can drive the measuring assembly to move in the vertical direction so that the connecting piece can move towards the locking and releasing piece and be matched with the locking and releasing piece for limiting, and the connecting piece can move away from the locking and releasing assembly after being unmatched with the locking and releasing assembly. According to the invention, the horizontal zero calibration convenience and measurement precision of the inclinometer can be improved.

Description

Technical Field

[0001] This invention relates to the field of track surveying technology, and in particular to an inclinometer zero-position error measuring device and its measuring method, as well as track inspection equipment. Background Technology

[0002] Currently, track inspection equipment is usually equipped with an inclinometer for measuring tilt angle. During the horizontal zero-position calibration of the inclinometer, it is often necessary to place it in two different postures with a difference of 180° and take two measurements. The zero-position error of the inclinometer is then calculated based on the two measurement readings to complete the horizontal zero-position calibration.

[0003] Chinese patent application CN216052745U discloses a portable automatic cruise track inspection trolley control system. The trolley is equipped with an inclinometer for measuring track surface levelness. Since the inclinometer is fixedly connected to the track inspection equipment, calibrating its level requires first placing the equipment upside down on the track and measuring the X and Y axis angles of the inclinometer. Then, the equipment is turned around to its normal position, and the X and Y axis angles are measured again. Finally, the zero-point error is calculated using the two measurements. This method requires manual repositioning of the track inspection equipment for each calibration, which is cumbersome and makes it difficult to ensure that the inclinometer's position is completely consistent between normal and upside-down orientations, potentially introducing additional measurement errors. Summary of the Invention

[0004] To address the shortcomings of the existing technology, the present invention aims to provide an inclinometer zero-position error measuring device and its measuring method, as well as a track inspection device, to improve the convenience and measurement accuracy of inclinometer horizontal zero-position calibration.

[0005] To achieve the above objectives, the present invention provides an inclinometer zero-position error measuring device, comprising: A housing having an accommodating cavity inside, the housing being used to be fixedly mounted on the body of the track inspection equipment; A lock-release assembly, which is fixedly disposed within the receiving cavity, includes at least one lock-release element; A measuring assembly, movably disposed within the accommodating cavity, includes a drive mechanism and a measuring mechanism with a rotating shaft extending vertically and connected to the measuring mechanism. At least a portion of the measuring mechanism is vertically opposed to the locking / releasing element and includes at least two connecting members spaced apart on the circumference of the rotating shaft and radially opposed to it. The measuring mechanism is rotatable about the rotating shaft to alternately align at least two connecting members with at least one locking / releasing element in the vertical direction. A lifting assembly is provided, which can drive the measuring assembly to move vertically so that the connecting member can move toward the locking / releasing member and engage with the locking / releasing member for limiting, and can move away from the locking / releasing assembly after disengaging from the locking / releasing assembly.

[0006] In one embodiment, the lifting assembly includes an elastic reset structure disposed between the measuring assembly and the bottom wall of the accommodating cavity; The locking / releasing element is an electromagnet, and the connecting element is a magnetic element. When the locking / releasing element is energized, it can form a magnetic attraction with the connecting element and squeeze the elastic reset structure. The elastic reset structure can drive the connecting element away from the locking / releasing element when it is de-energized.

[0007] In one embodiment, the bottom end of the drive mechanism is connected to the elastic reset structure, the top end of the drive mechanism is provided with the rotating shaft, and the measuring mechanism includes: A rotating platform, located on the top side of the drive mechanism and connected to the rotating shaft, the rotating shaft being situated on the central axis of the rotating platform, the rotating platform capable of rotating vertically under the drive of the rotating shaft, and at least two connecting members spaced apart circumferentially on the rotating platform; and An inclinometer is located on the top side of the rotating platform so as to rotate with the rotating platform, and the center of the inclinometer is located on the central axis of the rotating platform.

[0008] In one embodiment, the lifting assembly further includes a guide structure disposed within the accommodating cavity and connected to the bottom wall of the accommodating cavity. A guide channel extending vertically is formed within the guide structure, the guide channel penetrating the top wall of the guide member. An elastic reset structure is disposed within the guide channel, and the bottom of the drive mechanism movably passes through the guide channel and abuts against the elastic reset structure.

[0009] In one embodiment, the bottom side of the rotating platform is provided with a mounting groove, the connector is disposed in the mounting groove, and the bottom surface of the connector is flush with the top surface of the bottom side of the rotating platform in the vertical direction. At least one of the connectors is located on the bottom side of the rotating platform, and the top surface area of ​​the connector is larger than the slot area of ​​the mounting groove.

[0010] In one embodiment, at least two of the connecting members are evenly distributed along the circumference of the rotating platform and are arranged opposite each other in pairs along the radial direction of the axis of rotation. The locking and releasing components are provided in multiple ways. The multiple locking and releasing components are disposed on one side of the rotating platform and are arranged at intervals in the circumferential direction of the rotating platform. They are arranged in pairs opposite each other in the radial direction along the axis of rotation. The surfaces of the multiple locking and releasing components facing the rotating platform are flush with each other in the vertical direction.

[0011] In one embodiment, the inclinometer zero-position error measuring device further includes a positioning detection mechanism, the positioning detection mechanism comprising: At least one sensor, wherein the at least one sensor is located on one side of the rotating platform and is vertically opposed to the rotating platform; and At least two sensor heads are disposed together on one side of the rotating platform and arranged opposite each other in the radial direction of the rotating axis. The at least two sensor heads are capable of rotating with the rotating platform around the rotating axis to alternately align with at least one of the locking and releasing elements in the vertical direction.

[0012] This application also provides a method for measuring the zero-point error of an inclinometer, applicable to the inclinometer zero-point error measuring device described above, the measurement method comprising: The measuring mechanism is driven to rotate so that any connecting member is vertically aligned with a locking / releasing member, and the reverse measurement value X of the measuring mechanism at the first measuring position is obtained. f Y f ; The measuring mechanism is driven to move so that another connecting member is vertically aligned with the locking / releasing member, and the positive measurement value X of the measuring mechanism at the second measuring position is obtained. z Y z ; Based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0 = / 2, Y0 = (Y z +Y f ) / 2, calculate the zero-position error.

[0013] In one embodiment, a plurality of locking and releasing elements are provided, and the plurality of locking and releasing elements are spaced apart in the circumferential direction of the measuring mechanism. The measuring method includes the following steps: The measuring mechanism is driven to rotate so that one connector is vertically aligned with one of the locking / releasing members, and the other connector is vertically aligned with the other locking / releasing member. The reverse measurement value X of the measuring mechanism at the first measuring position is then acquired. f Y f ; The measuring mechanism is driven to move so that the two connecting parts alternate positions and are realigned with the two locking / releasing parts in the vertical direction, and the positive measurement value X of the measuring mechanism at the second measuring position is obtained. z Y z ; Based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0 = / 2, Y0 = (Y z +Y f ) / 2, calculate the zero-position error.

[0014] The present invention also proposes a track inspection device, including the inclinometer zero-position error measuring device described in any one of the preceding claims, wherein the inclinometer zero-position error measuring device comprises: A housing having an accommodating cavity inside, the housing being used to be fixedly mounted on the body of the track inspection equipment; A lock-release assembly, which is fixedly disposed within the receiving cavity, includes at least one lock-release element; A measuring assembly, movably disposed within the accommodating cavity, includes a drive mechanism and a measuring mechanism with a rotating shaft extending vertically and connected to the measuring mechanism. At least a portion of the measuring mechanism is vertically opposed to the locking / releasing element and includes at least two connecting members spaced apart on the circumference of the rotating shaft and radially opposed to it. The measuring mechanism is rotatable about the rotating shaft to alternately align at least two connecting members with at least one locking / releasing element in the vertical direction. A lifting assembly is provided, which can drive the measuring assembly to move vertically so that the connecting member can move toward the locking / releasing member and engage with the locking / releasing member for limiting, and can move away from the locking / releasing assembly after disengaging from the locking / releasing assembly.

[0015] This invention provides an inclinometer zero-position error measuring device and method, as well as track inspection equipment. Compared with the prior art, its advantages are as follows: The inclinometer zero-position error measuring device of this invention is used for a housing fixedly mounted on the body of a track inspection equipment. The housing cavity contains a measuring component, a locking / releasing component for locking and releasing with the measuring component, and a lifting component for driving the measuring component to move vertically. The measuring component includes a driving mechanism and a measuring mechanism. The measuring mechanism is rotatable around the axis of the driving mechanism, and at least two connecting members are spaced apart circumferentially on the measuring mechanism's axis. During horizontal zero-position calibration, the locking / releasing component of the locking / releasing component can be disengaged from the connecting members, and the lifting component can separate the measuring component from the locking / releasing component, allowing the measuring component to rotate around the axis to switch between forward and reverse measurement positions. Furthermore, when the measuring component rotates to the corresponding measurement position, the locking / releasing component can align vertically with the corresponding connecting member and engage in a limiting action to ensure the measuring component remains at the current measurement position. With this configuration, the measuring mechanism can be rotated via a drive mechanism, allowing it to switch and stop at the forward and reverse measuring positions respectively, thus acquiring forward and reverse measurement values. The zero-point error can then be calculated based on these values. Since this process does not require the overall repositioning of the track inspection equipment and housing, it avoids misalignment of the measuring components during position adjustments, improving the convenience and accuracy of the inclinometer's horizontal zero-point calibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the tiltmeter zero-position error measuring device according to an embodiment of the present invention; Figure 2 This is a top view of the tiltmeter zero-position error measuring device according to an embodiment of the present invention; Figure 3 This is the present invention. Figure 2 Sectional view of section AA; Figure 4 This is a side view of a portion of the structure of the tiltmeter zero-position error measuring device described in an embodiment of the present invention; Figure 5 This is an exploded view of the tiltmeter zero-position error measuring device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the track inspection equipment described in an embodiment of the present invention; Figure 7 This is a flowchart illustrating the inclinometer zero-position error measurement method according to an embodiment of the present invention.

[0017] Figure 8 This is a flowchart illustrating another embodiment of the tiltmeter zero-position error measurement method of the present invention.

[0018] In the diagram, 1000 is the track inspection equipment; 100 is the inclinometer zero-position error measuring device; 10 is the housing; 11 is the accommodating cavity; 20 is the locking and releasing assembly; 21 is the locking and releasing component; 30 is the measuring assembly; 31 is the drive mechanism; 311 is the rotating shaft; 32 is the measuring mechanism; 321 is the rotating platform; 321a is the mounting slot; 322 is the connecting component; 323 is the inclinometer; 40 is the lifting assembly; 41 is the elastic reset structure; 42 is the guide structure; 421 is the guide channel; 50 is the positioning detection mechanism; 51 is the sensor; 52 is the sensing head; and 200 is the machine body. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] It should be understood that the terms "before," "after," etc., are used in this invention to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, "before" information can also be called "after" information, and "after" information can also be called "before" information, without departing from the scope of this invention.

[0021] like Figures 1 to 3 As shown, an inclinometer zero-position error measuring device 100 according to an embodiment of the present invention includes a housing 10, a latching / releasing assembly 20, a measuring assembly 30, and a lifting assembly 40. The housing 10 has a receiving cavity 11 formed within it and is used to be fixedly mounted on the body 200 of the track inspection equipment 1000. The latching / releasing assembly 20 is fixedly mounted within the receiving cavity 11 and includes at least one latching / releasing element 21. The measuring assembly 30 is movably mounted within the receiving cavity 11 and includes a driving mechanism 31 with a rotating shaft 311 and a measuring mechanism 32. The rotating shaft 311 extends vertically and is connected to the measuring mechanism 32 via a transmission connection. At least a portion of the measuring mechanism 32 is vertically opposite to the locking / releasing member 21 and is provided with at least two connecting members 322. The at least two connecting members 322 are spaced apart on the periphery of the rotating shaft 311 and are radially opposite to each other along the rotating shaft 311. The measuring mechanism 32 can rotate around the rotating shaft 311 so that the at least two connecting members 322 are alternately aligned with at least one locking / releasing member 21 in the vertical direction. The lifting assembly 40 can drive the measuring assembly 30 to move in the vertical direction so that the connecting members 322 can move toward the locking / releasing member 21 and engage with the locking / releasing member 21 for limiting, and can move away from the locking / releasing assembly 20 after disengaging from the locking / releasing assembly 20.

[0022] The housing 10 serves as the mounting base for the inclinometer zero-point error measuring device 100, and has a accommodating cavity 11 with a top opening. The latching and releasing assembly 20 can be fixedly mounted on the side wall of the accommodating cavity 11 and is vertically opposite to the periphery of the measuring assembly 30. The lifting assembly 40 can be, but is not limited to, a linear motor or linear cylinder, which provides power for the measuring assembly 30 to move vertically, thereby adjusting the height of the measuring assembly 30. This allows it to move towards the latching and releasing assembly 20, where the latching and releasing member 21 abuts against the connecting member 322, or move away from the latching and releasing assembly 20, so that it can move around the rotating shaft 311 without rubbing or interfering with the latching and releasing assembly 20.

[0023] Understandably, during horizontal zero-point calibration, the locking / releasing element 21 of the locking / releasing assembly 20 can be disengaged from the connecting element 322, and the measuring assembly 30 can be separated from the locking / releasing assembly 20 via the lifting assembly 40. This allows the measuring assembly 30 to rotate around the rotating shaft 311 to switch between the forward and reverse measurement positions. Furthermore, when the measuring assembly 30 rotates to the corresponding measurement position, the locking / releasing element 21 can align vertically with the corresponding connecting element 322 and engage in a limiting action to ensure that the measuring assembly 30 remains in the current measurement position. With this configuration, the measuring mechanism 32 can be rotated by the driving mechanism 31, allowing it to switch and remain in the forward and reverse measurement positions respectively, thereby acquiring the forward and reverse measurement values. The zero-point error of the inclinometer 323 can then be calculated based on the forward and reverse measurement values ​​obtained by the measuring mechanism 32. Since the above process does not require the overall repositioning of the track inspection equipment 1000 body 200 and housing 10, it can avoid the measurement component 30 from being misaligned during the repositioning process, which is beneficial to improving the convenience and measurement accuracy of the inclinometer 323 of the measurement component 30 for horizontal zero-position calibration.

[0024] For example Figure 3 and Figure 4 As shown, the lifting assembly 40 of this embodiment includes an elastic reset structure 41, which is disposed between the measuring assembly 30 and the bottom wall of the accommodating cavity 11. The locking and releasing member 21 is an electromagnet, and the connecting member 322 is a magnetic member. When the locking and releasing member 21 is energized, it can form a magnetic attraction with the connecting member 322 and squeeze the elastic reset structure 41. The elastic reset structure 41 can drive the connecting member 322 away from the locking and releasing member 21 when it is de-energized.

[0025] Optionally, the elastic reset structure 41 can be configured as a reset spring, and the connector 322 can be configured as a magnetic component or as a ferromagnetic material such as galvanized round iron; no limitation is made here. The electromagnet can switch between an energized and de-energized state, enabling it to attract the connector 322 or release it after demagnetization.

[0026] When the locking / releasing element 21 attracts the connecting element 322, the connecting element 322 can overcome the elastic force of the elastic reset structure 41 under the action of magnetic force and move towards the locking / releasing assembly 20 until the locking / releasing element 21 and the connecting element 322 are magnetically connected. Thus, the measuring assembly 30 can be fixed at the current measuring position by the cooperation of the locking / releasing element 21 and the connecting element 322. At this time, the elastic reset structure 41 can undergo elastic deformation and accumulate elastic potential energy under the action of the measuring assembly 30. When the locking / releasing element 21 is demagnetized and releases the connecting element 322, the elastic reset structure 41 can release the elastic potential energy, so that the measuring assembly 30 can move away from the locking / releasing assembly 20 and back to the initial position under the action of the elastic force of the elastic reset structure 41. With this setting, the lifting and lowering movement of the measuring assembly 30 can be achieved by the cooperation of the locking / releasing assembly 20 and the elastic reset structure 41, so that there is no need to set up a linear drive mechanism 31 such as a linear motor or linear cylinder.

[0027] like Figures 3 to 5 As shown, in this embodiment of the invention, the bottom end of the driving mechanism 31 is connected to the elastic reset structure 41, and the top end of the driving mechanism 31 is provided with the rotating shaft 311. The measuring mechanism 32 includes a rotating platform 321 and an inclinometer 323. The bottom end of the driving mechanism 31 is connected to the elastic reset structure 41, and the top end of the driving mechanism 31 is provided with the rotating shaft 311. The rotating platform 321 is located on the top side of the driving mechanism 31 and connected to the rotating shaft 311. The rotating shaft 311 is located on the central axis of the rotating platform 321. The rotating platform 321 can rotate around the vertical direction under the drive of the rotating shaft 311. At least two connecting members 322 are spaced apart in the circumferential direction of the rotating platform 321. The inclinometer 323 is located on the top side of the rotating platform 321 to rotate with the rotating platform 321. The center of the inclinometer 323 is located on the central axis of the rotating platform 321. This arrangement helps to ensure that the position of the inclinometer 323 is completely consistent when placed in the forward and reverse directions, thereby reducing the measurement error introduced during the calibration process. Optionally, the drive mechanism 31 can be configured as a stepper motor, the output end of which can be connected to the rotating shaft 311 of the rotating platform 321 through a coupling, so as to drive the rotating shaft 311 to drive the rotating platform 321 to rotate around its central axis.

[0028] like Figure 3As shown, the lifting assembly 40 of this embodiment further includes a guide structure 42. The guide structure 42 is disposed within the receiving cavity 11 and connected to the bottom wall of the receiving cavity 11. A guide channel 421 extending vertically is formed within the guide structure 42, penetrating the top wall of the guide member. An elastic reset structure 41 is disposed within the guide channel 421. The bottom of the drive mechanism 31 movably passes through the guide channel 421 and abuts against the elastic reset structure 41. This arrangement can reduce the risk of the drive mechanism 31 deviating and improve the motion stability of the drive mechanism 31 by guiding the drive mechanism 31 through the guide channel 421.

[0029] like Figure 3 As shown, the rotating platform 321 of this embodiment of the invention has a mounting groove 321a on its bottom side, and a connector 322 is disposed in the mounting groove 321a. The bottom surface of the connector 322 is flush with the bottom surface of the rotating platform 321 in the vertical direction. At least one connector 322 is located on the bottom side of the rotating platform 321, and the top surface area of ​​the connector 322 is larger than the groove area of ​​the mounting groove 321a. This arrangement allows the connector 322 to be completely housed in the mounting groove 321a, thereby reducing the volume occupied by the measuring component 30 in the accommodating cavity 11. Furthermore, when the locking / releasing component 21 and the connector 322 are engaged and positioned, the top surface of the locking / releasing component 21 can simultaneously abut against the bottom surface of the connector 322 and the bottom surface of the rotating platform 321, thereby enabling the locking / releasing component 20 to fully contact the measuring component 30 and ensuring the stability of their connection.

[0030] like Figure 3 and Figure 4 As shown, this embodiment of the invention provides multiple connectors 322, which are evenly distributed around the circumference of the rotating platform 321 and arranged opposite each other in pairs along the radial direction of the rotation axis 311. Multiple locking / releasing members 21 are also provided, collectively disposed on one side of the rotating platform 321 and spaced apart around the circumference of the rotating platform 321, and arranged opposite each other in pairs along the radial direction of the rotation axis 311. The surfaces of the multiple locking / releasing members 21 facing the rotating platform 321 are flush in the vertical direction. It can be understood that by evenly distributing the multiple connectors 322 around the circumference of the rotating platform 321, uneven mass distribution in the circumference of the rotating platform 321 can be avoided, thereby improving the rotational stability of the rotating platform 321. Furthermore, by coordinating the locking / releasing members 21 with the multiple connectors 322 in a limiting manner, the connection stability between the test component and the locking / releasing member 20 is ensured, guaranteeing that the test component can stably remain at the corresponding measurement position without easily deviating.

[0031] like Figures 3 to 5As shown, the tiltmeter zero-position error measuring device 100 of this embodiment further includes a positioning detection mechanism 50. The positioning detection mechanism 50 includes at least one sensor 51 and at least two sensing heads 52. The at least one sensor 51 is located on one side of the rotating platform 321 and is vertically opposite to the rotating platform 321. The at least two sensing heads 52 are jointly disposed on one side of the rotating platform 321 and are arranged opposite each other in pairs along the radial direction of the rotating shaft 311. The at least two sensing heads 52 can rotate with the rotating platform 321 around the rotating shaft 311 to alternately align with at least one locking / releasing member 21 in the vertical direction. Optionally, the positioning detection mechanism 50 can be specifically configured as a proximity switch. The sensor 51 of the proximity switch can detect the position of the sensing head 52, thereby ensuring that the rotating platform 321 stops moving when it rotates to the corresponding position, so that the locking / releasing member 21 is stably connected to the corresponding connecting member 322.

[0032] like Figure 6 As shown, the present invention also proposes a track inspection device 1000, which includes an inclinometer zero-position error measuring device 100. The specific structure of the inclinometer zero-position error measuring device 100 is as described in the above embodiments. Since the track inspection device 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0033] like Figure 6 As shown, the present invention also provides a method for measuring the zero-point error of an inclinometer, using the inclinometer zero-point error measuring device 100 described above, including the following steps: S1. Drive the measuring mechanism 32 to rotate so that any one of the connecting parts 322 is aligned with a locking / releasing part 21 in the vertical direction, and obtain the reverse measurement value X of the measuring mechanism 32 at the first measuring position. f Y f ; S2. Drive the measuring mechanism 32 to move so that the other connecting member 322 is aligned with the locking / releasing member 21 in the vertical direction, and obtain the positive measurement value X of the measuring mechanism 32 at the second measuring position. z Y z ; S3, based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0 = (X z +X f ) / 2,Y0=(Y z +Y f ) / 2, calculate the zero-position error.

[0034] Specifically, in this embodiment, the direction of increasing railway mileage is taken as the positive direction of the railway, the reference rail is the left track, and the direction to the right track is taken as the positive direction of the track inspection equipment 1000. The first measurement position is defined as the reverse measurement position, and the second measurement position is the positive measurement position. Furthermore, the inclinometer 323 is a dual-axis inclinometer with the horizontal position as the zero point.

[0035] The working process of this invention is as follows: During horizontal zero-position calibration, the track inspection equipment 1000 is first placed upright on the track, and the track inspection equipment 1000 is stationary and locked on the track. Then, the locking / releasing member 21 of the inclinometer zero-position error measuring device 100 is disengaged from the connecting member 322 of the measuring component 30, and the locking / releasing member 21 and the connecting member 322 are separated vertically by the lifting component 40, allowing the measuring component 30 to rotate around its axis 311. When the positioning detection mechanism 50 detects that the measuring component 30 has rotated to the reverse position, the connecting member 322 of the measuring component 30 is moved toward the locking / releasing member 21 and engages with the locking / releasing member 21 to limit the measuring component 30 to stop at the reverse measurement position, and the reverse measurement value X of the inclinometer 321 is read again. f Y f Afterwards, the locking / releasing element 21 of the inclinometer zero-point error measuring device 100 is disengaged from the connecting element 322 of the measuring component 30. The lifting component 40 separates the locking / releasing element 21 and the connecting element 322 vertically. The measuring component 30 is then rotated around its axis 311 to a positive position, allowing the locking / releasing element 21 to align with the other connecting element 322. The other connecting element 322 is then moved towards the locking / releasing element 21 and engages with it, ensuring the measuring component 30 remains in the positive measuring position. The positive measurement value X of the inclinometer 323 is then read again. z Y z Finally, the zero-position error of the inclinometer 323 is calculated using the formula X0 = (X... z +X f ) / 2,Y0=(Y z +Y f ) / 2, thus completing a horizontal zero-position calibration measurement of the inclinometer 323.

[0036] Alternatively, in another embodiment, a plurality of locking / releasing elements 21 are provided, and the plurality of locking / releasing elements 21 are spaced apart in the circumferential direction of the measuring mechanism 32, and the measuring method includes the following steps: S1. Drive the measuring mechanism 32 to rotate so that one of the connecting members 322 is vertically aligned with one of the locking / releasing members 21, and the other connecting member 322 is vertically aligned with the other locking / releasing member 21, and obtain the reverse measurement value X of the measuring mechanism 32 at the first measuring position. f Y f ; S2. Drive the measuring mechanism 32 to move so that the two connecting pieces 322 alternate positions and realign with the two locking / releasing pieces 21 in the vertical direction, and obtain the positive measurement value X of the measuring mechanism 32 at the second measuring position. z Y z ; S3, based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0=(X z +X f ) / 2,Y0=(Y z +Y f ) / 2, calculate the zero-position error.

[0037] In this embodiment, the measuring mechanism can enable at least two sets of locking / releasing members 21 and connecting members 322 to cooperate and limit each other in both the first and second measuring positions, thereby improving the connection stability between the measuring mechanism 32 and the locking / releasing assembly 20.

[0038] Furthermore, in the above embodiment, when the reverse measurement value X is used... f Y f and positive measurement value X z Y z According to the formula X0=(X z +X f ) / 2,Y0=(Y z +Y f After calculating the zero-position error, steps S1 to S3 can be repeated multiple times to obtain zero-position error data X0 of multiple inclinometers 323, and the average value of the obtained zero-position error data X0 of multiple inclinometers 323 can be calculated, thereby improving the measurement accuracy of the inclinometer zero-position error measuring device 100 of the present invention.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A device for measuring the zero-position error of an inclinometer, characterized in that, include: A housing having an accommodating cavity inside, the housing being used to be fixedly mounted on the body of the track inspection equipment; A lock-release assembly, which is fixedly disposed within the receiving cavity, includes at least one lock-release element; A measuring assembly is movably disposed within the accommodating cavity. The measuring assembly includes a drive mechanism with a rotating shaft and a measuring mechanism. The rotating shaft extends vertically and is drively connected to the measuring mechanism. The measuring mechanism is at least partially disposed opposite to the locking / releasing member in the vertical direction and is provided with at least two connecting members. The at least two connecting members are spaced apart on the circumference of the rotating shaft and are disposed opposite to each other radially along the rotating shaft. The measuring mechanism is capable of rotating around the rotating shaft so that at least two of the connecting members are alternately aligned with at least one of the locking / releasing members in the vertical direction. as well as A lifting assembly is provided, which can drive the measuring assembly to move vertically so that the connecting member can move toward the locking / releasing member and engage with the locking / releasing member for limiting, and can move away from the locking / releasing assembly after disengaging from the locking / releasing assembly.

2. The tiltmeter zero-position error measuring device according to claim 1, characterized in that, The lifting assembly includes an elastic reset structure, which is disposed between the measuring assembly and the bottom wall of the accommodating cavity; The locking / releasing element is an electromagnet, and the connecting element is a magnetic element. When the locking / releasing element is energized, it can form a magnetic attraction with the connecting element and squeeze the elastic reset structure. The elastic reset structure can drive the connecting element away from the locking / releasing element when it is de-energized.

3. The tiltmeter zero-position error measuring device according to claim 2, characterized in that, The bottom end of the drive mechanism is connected to the elastic reset structure, and the top end of the drive mechanism is provided with the rotating shaft. The measuring mechanism includes: A rotating platform, located on the top side of the drive mechanism and connected to the rotating shaft, the rotating shaft being situated on the central axis of the rotating platform, the rotating platform capable of rotating vertically under the drive of the rotating shaft, and at least two connecting members spaced apart circumferentially on the rotating platform; and An inclinometer is located on the top side of the rotating platform so as to rotate with the rotating platform, and the center of the inclinometer is located on the central axis of the rotating platform.

4. The tiltmeter zero-position error measuring device according to claim 3, characterized in that, The lifting assembly also includes a guide structure, which is disposed within the accommodating cavity and connected to the bottom wall of the accommodating cavity. A guide channel extending vertically is formed within the guide structure, and the guide channel penetrates the top wall of the guide member. The elastic reset structure is disposed within the guide channel, and the bottom of the drive mechanism movably passes through the guide channel and abuts against the elastic reset structure.

5. The tiltmeter zero-position error measuring device according to claim 3, characterized in that, The rotating platform has a mounting groove on its bottom side, the connector is located in the mounting groove, and the bottom surface of the connector is flush with the bottom surface of the rotating platform in the vertical direction. At least one of the connectors is located on the bottom side of the rotating platform, and the top surface area of ​​the connector is larger than the slot area of ​​the mounting groove.

6. The tiltmeter zero-position error measuring device according to claim 3, characterized in that, At least two of the connecting members are evenly distributed along the circumference of the rotating platform and are arranged opposite each other in pairs along the radial direction of the axis of rotation; The locking and releasing components are provided in multiple ways. The multiple locking and releasing components are disposed on one side of the rotating platform and are arranged at intervals in the circumferential direction of the rotating platform. They are arranged in pairs opposite each other in the radial direction along the axis of rotation. The surfaces of the multiple locking and releasing components facing the rotating platform are flush with each other in the vertical direction.

7. The tiltmeter zero-position error measuring device according to claim 3, characterized in that, The inclinometer zero-position error measuring device further includes a positioning detection mechanism, which comprises: At least one sensor, wherein the at least one sensor is located on one side of the rotating platform and is vertically opposed to the rotating platform; and At least two sensor heads are disposed together on one side of the rotating platform and arranged opposite each other in the radial direction of the rotating axis. The at least two sensor heads are capable of rotating with the rotating platform around the rotating axis to alternately align with at least one of the locking and releasing elements in the vertical direction.

8. A method for measuring the zero-point error of an inclinometer, applicable to the inclinometer zero-point error measuring device described in any one of 1 to 7, characterized in that, Includes the following steps: The measuring mechanism is driven to rotate so that any connecting member is vertically aligned with a locking / releasing member, and the reverse measurement value X of the measuring mechanism at the first measuring position is obtained. f Y f ; The measuring mechanism is driven to move so that another connecting member is vertically aligned with the locking / releasing member, and the positive measurement value X of the measuring mechanism at the second measuring position is obtained. z Y z ; Based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0 = / 2, Y0 = (Y z +Y f ) / 2, calculate the zero-position error.

9. A method for measuring the zero-position error of an inclinometer according to claim 8, characterized in that, The locking and releasing components are provided in multiple ways, and the multiple locking and releasing components are spaced apart in the circumferential direction of the measuring mechanism. The measuring method includes the following steps: The measuring mechanism is driven to rotate so that one connector is vertically aligned with one of the locking / releasing members, and the other connector is vertically aligned with the other locking / releasing member. The reverse measurement value X of the measuring mechanism at the first measuring position is then acquired. f Y f ; The measuring mechanism is driven to move so that the two connecting parts alternate positions and are realigned with the two locking / releasing parts in the vertical direction, and the positive measurement value X of the measuring mechanism at the second measuring position is obtained. z Y z ; Based on the reverse measurement value X f Y f and positive measurement value X z Y z According to the formula X0 = / 2, Y0 = (Y z +Y f ) / 2, calculate the zero-position error.

10. A track inspection device, characterized in that, The device includes an inclinometer zero-position error measuring device according to any one of claims 1 to 7.

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