Zero position adjusting device
By designing a zero-position adjustment device and using sensors and electronic terminals to achieve precise measurement of the actuator piston rod, the problems of low accuracy and low efficiency in actuator length adjustment are solved, enabling efficient and high-precision actuator installation by a single person.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING GALAXY POWER EQUIP TECH CO LTD
- Filing Date
- 2026-02-03
- Publication Date
- 2026-05-12
AI Technical Summary
In existing technologies, the length adjustment of actuators is inaccurate and inefficient, requiring three people to work together, resulting in large errors and wasted manpower costs.
A zero-position adjustment device is designed, including a base assembly, a first support, a second support, and a measuring assembly. It achieves precise measurement and automated control of the actuator piston rod through sensors and electronic terminals, reducing manual intervention.
It improves the accuracy and efficiency of actuator zero-point adjustment, reduces labor costs, enables single-person operation and high-precision measurement, and avoids errors caused by manual reading.
Smart Images
Figure CN122016322A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of adjustment devices, and more specifically, to a zero-position adjustment device. Background Technology
[0002] As the actuator in the thrust vector control system of a launch vehicle engine during ground testing, its function is to generate lateral control torque according to the instructions of the control system, controlling the pitch and yaw of the nozzle. Considering the expansion and axial elongation of the launch vehicle engine under operating conditions, the actuator cannot usually be directly installed on the engine. Instead, the engine's deformation must be taken into account during actuator installation. Therefore, before installation, the actuator's length needs to be adjusted according to the engine's deformation and elongation distance during operation, i.e., zero-position adjustment of the actuator is required.
[0003] In related technologies, adjusting the length of an actuator typically requires the cooperation of three people: two to hold the two ends of the actuator, and a third to measure the length of the actuator using a center hole distance caliper. Once the length of the actuator is adjusted to the preset value, the extended position of the moving end of the actuator is fixed. The measurement method in these technologies has a large error, resulting in low adjustment accuracy of the actuator, wasted labor costs, and low work efficiency. Summary of the Invention
[0004] This application addresses the shortcomings of existing methods by proposing a zero-position adjustment device to solve the technical problems of low adjustment accuracy and low working efficiency of the actuator in related technologies.
[0005] This application provides a zero-position adjustment device, including: A base assembly, wherein the base assembly is provided with a sliding portion extending in a first direction; A first bracket, disposed at one end of the base assembly, is configured to be detachably connected to the fixed end of the actuator; The second bracket, disposed on the sliding part, is configured to be detachably connected to the moving end of the actuator; The measuring assembly includes a sensor body and a mating component, the mating component being connected to the second bracket, and the sensor body being disposed on the side or top surface of the base assembly and extending along a first direction; An electronic terminal is communicatively connected to the mating component, and the electronic terminal includes a data storage unit.
[0006] Optionally, the first bracket is fixedly mounted at one end of the base assembly.
[0007] Optionally, the base assembly includes a first base, a lead screw disposed on the first base, and at least one guide rod disposed on the first base, wherein the sliding part is threadedly connected to the lead screw and slidably connected to the guide rod; The lead screw is driven by a drive motor or manually.
[0008] Optionally, the first bracket is slidably mounted on the base assembly, and a zero-point limiting block is fixedly mounted on the side of the first bracket facing the second bracket. The zero-point limiting block is fixedly mounted on the base assembly. When the second bracket abuts against the zero-point limiting block, the reading displayed in the electronic terminal is zero.
[0009] Optionally, the base assembly includes a second base and a guide rail, the sliding part is slidably disposed on the main body of the guide rail, and a first slider is also slidably disposed on the main body of the guide rail, and the first bracket is fixedly connected to the first slider.
[0010] Optionally, two guide rails are arranged parallel to each other along the first direction.
[0011] Optionally, the sensor body includes a scale grating of a grating ruler, and the mating component includes a reading head of the grating ruler; the scale grating is detachably mounted on one side of the base assembly, and the reading head of the grating ruler is detachably mounted on the second bracket.
[0012] Optionally, the sensor body includes a waveguide for a magnetostrictive displacement sensor, and the mating component includes a magnetic ring for the magnetostrictive displacement sensor; the magnetic ring is disposed on a second bracket, and the waveguide is detachably disposed on one side of the base assembly.
[0013] Optionally, both the first bracket and the second bracket include a bracket body and a support. The support of the first bracket is configured to be fixed to the fixed end of the actuator by a pin. The support of the second bracket is configured to be fixed to the moving end of the actuator by a pin.
[0014] Optionally, the electronic terminal includes a digital display screen, which is mounted on the second bracket and located on the side away from the first bracket, and the mating component is connected to the digital display screen via a cable.
[0015] The beneficial technical effects of the technical solutions provided in this application include: In this embodiment, the zero-position adjustment length before actuator installation can be calculated in advance based on the mechanical length of the actuator and the deformation and elongation distance of the engine during operation. During the zero-position adjustment operation, it can be performed independently by one operator. The operator places the actuator on the base assembly, fixes the fixed end of the actuator to the first bracket, fixes the piston rod end of the actuator to the second bracket, and installs the actuator on the prefabricated zero-position adjustment device for actuators. Then, by driving the second bracket to slide, the piston rod of the actuator can be gradually extended. Under the drive of the second bracket, the mating parts of the measuring component can move with the piston rod of the actuator, thereby enabling precise measurement of the movement distance of the piston rod with the help of sensors such as the measuring component. The sensor readings can be directly transmitted to the electronic terminal and stored in the data storage unit of the electronic terminal, and the readings can be displayed intuitively, eliminating the error interference of manual reading, improving the zero-position adjustment accuracy of the actuator, saving labor costs, and improving work efficiency.
[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description
[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a zero-position adjustment device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a base assembly provided in an embodiment of this application, with the first base hidden. Figure 3 This is a schematic diagram of the structure of the second support provided in an embodiment of this application.
[0018] Explanation of reference numerals in the attached figures: 10-Base assembly; 11-First base; 12-Lead screw; 13-Guide rod; 14-Sliding part; 15-Baffle; 16-Handle; 20 - First stent; 30 - Second support; 31 - Support body; 32 - Support; 40 - Measuring components; 41 - Scale grating; 42 - Reading head; 50-Digital display screen; 60-Pin. Detailed Implementation
[0019] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.
[0020] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in the specification of this application means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by the art. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" can be implemented as "A," or as "B," or as "A and B."
[0021] The servo system is a crucial component of the rocket control system, serving as the actuator for attitude control during flight. Typically, in solid-fuel rockets with engines employing flexible nozzle oscillation, the servo system's actuators connect the nozzle and engine casing. Signals from the control system extend or retract the actuator's rod (piston rod), causing the nozzle to oscillate and thus controlling the rocket's flight attitude. The actuator's fixed end includes a fixed lug, and the piston rod's end includes a threaded rotating lug. The actuator is secured to the engine casing and the lugs on the nozzle via pins.
[0022] Considering the expansion and axial elongation of the launch vehicle engine under operating conditions, the actuator cannot usually be directly installed on the engine. Instead, the engine's deformation must be taken into account during actuator installation. Therefore, the actuator needs to be adjusted in length before installation, i.e., a zero-position adjustment operation needs to be performed.
[0023] The actuator's thermal zero point is the sum of its mechanical zero point and compensation value, denoted as L1. The actuator's mechanical zero point is the distance between the center holes of the two lugs at the time of manufacture, denoted as L0. The compensation value is the distance the engine stretches during operation, denoted as ΔL. That is, Expression 1 Before adjusting the actuator to zero position, the locking nut and bolt need to be removed. At this time, the piston rod is not locked. When the extension length of the piston rod is adjusted so that the actuator reaches the value of the thermal zero position, the adjustable lug on the actuator is fixed by the locking nut and bolt on the actuator.
[0024] In related technologies, adjusting the length of an actuator typically requires the cooperation of three people: two to hold the two ends of the actuator, and a third to use a center hole distance caliper to measure the distance between the two lug holes after the actuator is adjusted. The measured values are subject to significant measurement errors. Furthermore, the center hole distance caliper comes into contact with precision components inside the lugs during the measurement process, potentially causing some damage to these components.
[0025] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0026] Reference Figures 1-3 The zero-position adjustment device provided in this application embodiment includes a base assembly 10, a first bracket 20, a second bracket 30, a measuring component 40, and an electronic terminal 50.
[0027] The base assembly 10 has a sliding portion 14 extending along a first direction. A first bracket 20 is disposed at one end of the base assembly 10 and is configured to be detachably connected to the fixed end of the actuator. A second bracket 30 is disposed on the sliding portion 14 and is configured to be detachably connected to the moving end of the actuator. The measuring assembly 40 includes a sensor body and a mating component. The mating component is connected to the second bracket 30. The sensor body is disposed on the side or top surface of the base assembly 10 and extends along the first direction. An electronic terminal 50 is communicatively connected to the mating component and includes a data storage unit.
[0028] In this embodiment, the zero-position adjustment of the actuator can be performed independently by one operator. The operator places the actuator on the base assembly 10, fixes the fixed end of the actuator to the first bracket 20, and fixes the piston rod end of the actuator to the second bracket 30, thus installing the actuator on the pre-fabricated zero-position adjustment device for the actuator. Then, by driving the second bracket 30 to slide, the piston rod of the actuator gradually extends. Under the drive of the second bracket 30, the mating parts of the measuring component 40 can move along with the piston rod of the actuator. This allows for precise measurement of the piston rod's movement distance using sensors such as the measuring component 40, improving measurement accuracy and avoiding errors caused by manual reading. The sensor readings can be directly transmitted to the electronic terminal 50 and stored in the data storage unit of the electronic terminal 50. When the actuator length is adjusted, the electronic terminal 50 can display the sensor readings intuitively. When the reading displayed in the electronic terminal 50 reaches the actuator's thermal zero value, the second bracket 30 is immediately controlled to stop, and then the adjustable lugs of the actuator are fixed. The entire actuator is then removed from between the first bracket 20 and the second bracket 30. This can improve the zero-position adjustment accuracy of the actuator, save labor costs, and improve work efficiency.
[0029] Alternatively, in one embodiment, the first bracket 20 is fixedly disposed at one end of the base assembly 10.
[0030] In this embodiment, the first bracket 20 is fixed to one end of the base assembly 10, and only the second bracket 30 can slide along the base assembly 10. By controlling the movement of the second bracket 30, the piston rod of the actuator extends. During the movement, the sensor can detect the hole distance between the lugs at both ends of the actuator in real time, thereby enabling precise adjustment of the length of the actuator.
[0031] Optionally, the base assembly 10 includes a first base 11, a lead screw 12 disposed on the first base 11, and at least one guide rod 13 disposed on the first base 11. The sliding part 14 is threadedly connected to the lead screw 12 and slidably connected to the guide rod 13.
[0032] In this embodiment, two guide rods 13 are provided, which are arranged parallel to each other on both sides of the lead screw 12 to limit the sliding part 14 from sliding along the length of the lead screw 12. The lead screw 12 has high transmission precision; each rotation of the lead screw 12 can drive the sliding part 14 and the second bracket 30 to move a distance of one screw pitch, enabling the zero-position adjustment device of this application to achieve high adjustment and positioning accuracy.
[0033] Optionally, the first bracket 20 is fixed to the first end of the first base 11, and the first ends of the lead screw 12 and guide rod 13 are fixedly connected to the first bracket 20. A baffle 15 is also fixedly provided at the second end of the first base 11, the second end of the guide rod 13 is fixed to the baffle 15, and the second end of the lead screw 12 passes through the baffle 15, allowing connection to an external drive device. In this embodiment, the sliding part 14 can be a rectangular block, and the second bracket 30 is fixedly provided on the top surface of the sliding part 14.
[0034] Optionally, the lead screw 12 is driven by a drive motor or manually.
[0035] In this embodiment, a handle 16 is also fixedly provided at the second end of the lead screw 12, allowing the operator to drive the lead screw 12 to rotate by hand-cranking the handle 16. Alternatively, a drive motor can be installed at the second end of the lead screw 12 to drive its rotation using electrical energy.
[0036] Optionally, in another alternative embodiment of this application (not shown in the figure), the first bracket 20 is slidably mounted on the base assembly 10, and a zero-point limiting block is fixedly mounted on the side of the first bracket 20 facing the second bracket 30. The zero-point limiting block is fixedly mounted on the base assembly 10. When the second bracket 30 abuts against the zero-point limiting block, the reading displayed in the electronic terminal 50 is zero.
[0037] Optionally, the base assembly 10 includes a second base and a guide rail, a sliding part 14 is slidably disposed on the main body of the guide rail, a first slider is also slidably disposed on the main body of the guide rail, and a first bracket 20 is fixedly connected to the first slider.
[0038] Optionally, two guide rails are arranged parallel to each other along the first direction.
[0039] In the first embodiment described above, the first bracket 20 is fixed to one end of the first base 11, the second bracket 30 is slidably disposed on the first base 11, and the measuring component 40 is mounted on the second bracket 30 to measure the displacement of the second bracket 30. If the length of the actuator varies greatly, the measurement of the shorter actuator will occur at one end of the guide rail, while the measurement of the longer actuator will occur at the other end. Since the accuracy of the guide rail is not completely consistent throughout its entire stroke range (there may be slight nonlinear errors), this introduces systematic measurement errors.
[0040] Therefore, in this embodiment, the base assembly 10 includes a second base and a guide rail. Both the first bracket 20 and the second bracket 30 are slidably mounted on the guide rail. The zero-point limiting block is fixed to the main body of the guide rail by bolts or other fasteners, allowing the position of the zero-point limiting block to also move. The sliding of the first bracket 20 towards the second bracket 30 is limited by the zero-point limiting block. The zero-point limiting block defines the mechanical zero point of the actuator. When the second bracket 30 abuts against the zero-point limiting block, the electronic terminal 50 displays a reading of zero.
[0041] In this embodiment, both the first support 20 and the second support 30 are slidable. The first support 20 and the zero-point limit block can be adjusted to a suitable position according to the actuator specifications, accommodating the installation and adjustment of actuators of different lengths over a wide range. For actuators of different lengths, they can be installed at approximately the center of the worktable for testing. This ensures that all actuators are tested in the section of the guide rail with the highest accuracy and stability (usually the middle section), guaranteeing the consistency of the measurement reference and improving the reliability of the data.
[0042] Optionally, the guide rail in this embodiment can be a double slider linear guide rail pair, with the first bracket 20 and the second bracket 30 respectively fixed on a slider, and the movement of the first bracket 20 and the second bracket 30 can be freely controlled by an external controller.
[0043] Optionally, in one embodiment, the sensor body includes a scale grating 41 of a grating ruler, and the mating component includes a reading head 42 of the grating ruler. The scale grating 41 is detachably mounted on one side of the base assembly 10, and the reading head 42 of the grating ruler is detachably mounted on the second bracket 30.
[0044] In this embodiment, the measuring component 40 uses a grating ruler, with the scale grating 41 of the grating ruler arranged on one side of the base component 10. This scale is a glass or metal ruler with densely spaced, equally spaced lines (e.g., 20 or 50 lines per millimeter). The reading head 42 of the grating ruler is mounted on the second support 30 and has lines similar to the scale grating 41 but at a slightly angled angle. The grating ruler also includes a light-emitting diode (light source) and a photodetector.
[0045] When the reading head 42 overlaps with the scale grating 41 at a small angle, light emitted from the light source passes through them, producing a series of large, alternating bright and dark stripes much wider than the original grating lines—the "moiré fringes." As the second support 30 moves the reading head 42 relative to the scale grating 41, the moiré fringes move up and down. For every grating pitch (the width of one grating line) the indicator grating moves, the moiré fringes complete one cycle. The photodetector detects this periodic light signal of alternating brightness and converts it into a periodic electrical signal. By counting the cycles of the electrical signal, the distance the second support 30 has moved can be accurately measured, thus accurately measuring the extension distance of the actuator piston rod and improving the zeroing accuracy of the actuator.
[0046] Alternatively, in another alternative embodiment, the sensor body includes a waveguide (not shown) for a magnetostrictive displacement sensor, and the mating component includes a magnetic ring (not shown) for the magnetostrictive displacement sensor. The magnetic ring is disposed on the second support 30, and the waveguide is detachably disposed on one side of the base assembly 10.
[0047] In this embodiment, the measurement component 40 uses a magnetostrictive displacement sensor, whose main components include a waveguide and a magnetic ring. The waveguide of the magnetostrictive displacement sensor is a sensitive wire made of magnetostrictive material encapsulated in a protective outer tube, and the magnetic ring is fixed on the second support 30.
[0048] Magnetostrictive displacement sensors can determine the actual displacement value of an actuator by detecting the absolute position of a moving magnetic ring.
[0049] In this embodiment, both the waveguide and the magnetic ring are robust metal components, resistant to oil, dust, and impact vibration. Furthermore, the magnetic ring does not contact the waveguide, eliminating mechanical wear and extending the service life of the zero-position adjustment device.
[0050] Optionally, the scale grating 41 and the waveguide can be detachably mounted on the base assembly 10 using a combination of magnetic attraction and mechanical positioning.
[0051] Optionally, a scale (not shown) is also provided on the base assembly 10.
[0052] In this embodiment, a scale is also provided on the base assembly 10. The operator can use the scale to make coarse adjustments to the length of the actuator, achieving rapid positioning of the actuator length adjustment and improving work efficiency. For example, if the piston rod of the actuator needs to be moved to a stroke of 300mm, it can first be quickly moved to around 298mm according to the mechanical scale, and then precisely positioned using a grating ruler or a magnetostrictive displacement sensor.
[0053] Optionally, refer to Figure 1 and Figure 3 Both the first support 20 and the second support 30 include a support body and a support 32. The support 32 of the first support 20 is configured to be fixed to the fixed end of the actuator by a pin 60. The support 32 of the second support 30 is configured to be fixed to the moving end of the actuator by a pin 60.
[0054] In this embodiment, the fixed lug at the fixed end of the actuator is locked to the support 32 of the first bracket 20 by a pin 60, and the rotating lug at the end of the actuator piston rod is also locked to the support 32 of the second bracket 30 by a pin 60. When performing zeroing operations on actuators of different specifications and lengths, different models of actuators can be connected to the zero-position adjustment device of this application by replacing the pins 60 of different sizes, thereby increasing the applicability of the zero-position adjustment device of this application.
[0055] Optionally, refer to Figure 1 The electronic terminal 50 includes a digital display screen, which is mounted on the second bracket 30 and located on the side away from the first bracket 20. The mating parts are connected to the digital display screen via a cable.
[0056] In this embodiment, the zero-position adjustment device of this application is equipped with a digital display screen that can be displayed independently, and the digital display screen is directly arranged on the second bracket 30, so that the operator can more intuitively observe the sensor readings.
[0057] Of course, the electronic terminal 50 can also be a mobile phone, laptop computer or other terminal device that communicates with the measuring component 40. The measuring component 40 remotely transmits and stores the measured values of the actuator in the mobile phone or laptop computer or other terminal device.
[0058] The beneficial technical effects of the technical solutions provided in this application include: In this embodiment, the zero-position adjustment of the actuator can be performed independently by one operator. The operator places the actuator on the base assembly 10, fixes the fixed end of the actuator to the first bracket 20, and fixes the piston rod end of the actuator to the second bracket 30, thus installing the actuator on the pre-fabricated zero-position adjustment device for the actuator. Then, by driving the second bracket 30 to slide, the piston rod of the actuator gradually extends. Under the drive of the second bracket 30, the mating parts of the measuring component 40 can move along with the piston rod of the actuator. This allows for precise measurement of the piston rod's movement distance using sensors such as the measuring component 40, improving measurement accuracy and avoiding errors caused by manual reading. The sensor readings can be directly transmitted to the electronic terminal 50 and stored in the data storage unit of the electronic terminal 50. When the actuator length is adjusted, the electronic terminal 50 can display the sensor readings intuitively. When the reading displayed in the electronic terminal 50 reaches the actuator's thermal zero value, the second bracket 30 is controlled to stop. Finally, the adjustable lugs of the actuator are fixed, and the entire actuator is removed from between the first bracket 20 and the second bracket 30. This can improve the zero-position adjustment accuracy of the actuator, save labor costs, and improve work efficiency.
[0059] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0060] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0061] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0062] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0063] The above description is only a partial implementation of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application, without departing from the technical concept of this application, also fall within the protection scope of the embodiments of this application.
Claims
1. A zero-position adjustment device, characterized in that, include: A base assembly, wherein the base assembly is provided with a sliding portion extending in a first direction; A first bracket, disposed at one end of the base assembly, is configured to be detachably connected to the fixed end of the actuator; The second bracket, disposed on the sliding part, is configured to be detachably connected to the moving end of the actuator; The measuring assembly includes a sensor body and a mating component, the mating component being connected to the second bracket, and the sensor body being disposed on the side or top surface of the base assembly and extending along a first direction; An electronic terminal is communicatively connected to the mating component, and the electronic terminal includes a data storage unit.
2. The zero-position adjustment device according to claim 1, characterized in that, The first bracket is fixedly mounted at one end of the base assembly.
3. The zero-position adjustment device according to claim 2, characterized in that, The base assembly includes a first base, a lead screw disposed on the first base, and at least one guide rod disposed on the first base. The sliding part is threadedly connected to the lead screw and slidably connected to the guide rod. The lead screw is driven by a drive motor or manually.
4. The zero-position adjustment device according to claim 1, characterized in that, The first bracket is slidably mounted on the base assembly, and a zero-point limiting block is fixedly mounted on the side of the first bracket facing the second bracket. The zero-point limiting block is fixedly mounted on the base assembly. When the second bracket abuts against the zero-point limiting block, the reading displayed in the electronic terminal is zero.
5. The zero-position adjustment device according to claim 4, characterized in that, The base assembly includes a second base and a guide rail. The sliding part is slidably disposed on the main body of the guide rail. A first slider is also slidably disposed on the main body of the guide rail. The first bracket is fixedly connected to the first slider.
6. The zero-position adjustment device according to claim 5, characterized in that, Two guide rails are arranged parallel to each other along the first direction.
7. The zero-position adjustment device according to claim 2 or 4, characterized in that, The sensor body includes a scale grating of a grating ruler, and the mating component includes a reading head of the grating ruler; the scale grating is detachably mounted on one side of the base assembly, and the reading head of the grating ruler is detachably mounted on the second bracket.
8. The zero-position adjustment device according to claim 2 or 4, characterized in that, The sensor body includes a waveguide for a magnetostrictive displacement sensor, and the mating component includes a magnetic ring for the magnetostrictive displacement sensor; the magnetic ring is mounted on a second bracket, and the waveguide is detachably mounted on one side of the base assembly.
9. The zero-position adjustment device according to claim 1, characterized in that, Both the first bracket and the second bracket include a bracket body and a support. The support of the first bracket is configured to be fixed to the fixed end of the actuator by a pin. The support of the second bracket is configured to be fixed to the movable end of the actuator by a pin.
10. The zero-position adjustment device according to claim 1, characterized in that, The electronic terminal includes a digital display screen, which is mounted on the second bracket and located on the side away from the first bracket. The mating component is connected to the digital display screen via a cable.