Frame type gradienter adjusting device

Abstract

The invention relates to the technical field of horizontal measurement of a water-turbine generator set, aims to solve the problems that in the prior art, the labor intensity of field operation personnel is high, time and labor are wasted during measurement, the working efficiency is low, the maintenance progress of the water-turbine generator set is influenced by a long adjusting period, and efficient and high-precision horizontal measurement cannot be realized, and provides a frame type gradienter adjusting device. The device comprises a supporting platform; adjusting mechanisms are arranged at the two ends of the supporting platform, and a fixing accessory is arranged at the top end of the supporting platform. A detachable frame type gradienter is arranged in the supporting platform; the adjusting mechanisms are assembled at the two ends of the bottom of the frame type gradienter and abut against the inner bottom face of the supporting platform, and the posture of the frame type gradienter is adjusted by rotating the adjusting mechanisms. The supporting platform bears the frame type gradienter and is matched with the surface of the detected component. The method has the advantages that the labor intensity of field operators is low, time and labor are saved during measurement, the working efficiency is high, the overhaul progress of the water-turbine generator set is accelerated, and efficient and high-precision horizontal measurement is achieved.

Description

Technical Field

[0001] This invention relates to the field of level measurement technology for hydro-generator sets, and more specifically, to a frame-type level adjustment device. Background Technology

[0002] During the installation, overhaul, and operation of hydro-generator units, the dynamic level accuracy of key components such as the mirror plate and rotor roundness measuring frame directly determines the stability and safety of the unit's operation. Therefore, a frame level is required to perform high-precision level measurements on these components. The accuracy of the frame level depends on the levelness of its own reference posture. If the level itself has an initial posture deviation, or if the surface of the measured component is uneven due to machining errors, cumulative assembly errors, or long-term wear, the measurement results will deviate from the true value, thus affecting the accuracy of subsequent unit commissioning and fault diagnosis.

[0003] However, there is currently no specialized attitude adjustment equipment for frame-type levels in China. In field operations, the only way to deal with the above problems is to use the traditional method of "adjusting with shims": that is, according to the horizontal deviation of the frame-type level, shims of different thicknesses are selected and placed in the gap between the level and the part being measured. The attitude of the level is adjusted by increasing or decreasing the number of shims or replacing shims of different thicknesses. Moreover, during the shim laying process, the position of the shims needs to be moved repeatedly to adapt to the support requirements of the level until the bubble of the level is at the center zero mark, which meets the measurement benchmark requirements.

[0004] However, this traditional adjustment method has significant drawbacks: Firstly, the shim thickness relies on the operator's experience and multiple trial-and-error selections, lacking precise quantitative basis, and is prone to low adjustment efficiency due to insufficient shim thickness matching; secondly, the contact between the shim and the level and the measured component is a rigid point contact or line contact, which is difficult to form a stable support, and the shim is prone to displacement during the adjustment process, requiring multiple repositionings, further prolonging the adjustment time; in addition, shims used for a long time are prone to thickness deviations due to wear and deformation, which will introduce new adjustment errors when reused, making it impossible to guarantee the consistency and reliability of the measurement benchmark; the above problems not only increase the labor intensity of on-site operators, but also affect the maintenance progress of the hydro-generator unit due to the excessively long adjustment cycle, making it difficult to meet the needs of modern units for efficient and high-precision level measurement. Summary of the Invention

[0005] The present invention aims to provide a frame-type level adjustment device to solve the problems of high labor intensity for on-site workers, time-consuming and laborious measurement, low work efficiency, long adjustment cycle affecting the maintenance progress of hydro-generator units, and inability to achieve efficient and high-precision level measurement in the prior art.

[0006] The embodiments of the present invention are implemented as follows: This invention provides a frame-type level adjustment device, which includes a support platform; The support platform is equipped with adjustment mechanisms at both ends and with a fixing attachment at the top. The support platform is equipped with a detachable frame level; the adjustment mechanism is mounted on both ends of the bottom of the frame level and abuts against the inner bottom surface of the support platform, and the attitude of the frame level is adjusted by rotating the adjustment mechanism. The aforementioned support platform supports the aforementioned frame-type level and is adapted to the surface of the component being measured.

[0007] In use, first, the detachable frame level is installed inside the support platform. Then, the frame level is fixed to the top of the support platform using the fixing accessories to prevent the level from shifting during adjustment or testing. Next, the adjustment mechanisms at both ends of the support platform (the adjustment mechanisms are mounted at both ends of the bottom of the frame level and abut against the inner bottom surface of the support platform) are operated. By rotating the adjustment mechanisms, the attitude of the frame level is changed until the bubble of the frame level is at the center zero mark, thus completing the measurement benchmark calibration. Finally, the support platform carrying the frame level is fitted and placed on the surface of the component being measured. By rotating the adjustment device as a whole or changing its position on the component being measured, the levelness of different positions of the component can be detected.

[0008] The frame-type level adjustment device disclosed in this embodiment, with its dedicated support platform, adjustment mechanisms at both ends, and fixing attachment at the top, eliminates the need for traditional shims. By rotating the adjustment mechanisms, the frame-type level's posture can be precisely fine-tuned, quickly repositioning the bubble and solving the problems of trial-and-error with shim thickness and easy displacement, significantly improving adjustment efficiency. Furthermore, the support platform provides stable support for the frame-type level, and the fixing attachment prevents displacement. The device can also detect the level of components at different positions by rotating or changing its position, ensuring the reliability of the measurement benchmark and adapting to the dynamic level measurement needs of components such as the mirror plate and rotor circular measuring frame of a hydro-generator unit. This effectively reduces on-site work intensity and avoids delays in maintenance due to time-consuming adjustments. Therefore, this frame-type level adjustment device offers the advantages of reduced labor intensity for on-site workers, time-saving and labor-saving measurement, high work efficiency, accelerated maintenance of hydro-generator units, and efficient and high-precision level measurement.

[0009] Optionally: The support platform has a base plate, and the top surface of the base plate has a first clamping plate and a second clamping plate that are parallel to each other and spaced apart. The base plate, the first clamping plate and the second clamping plate are integrally formed. The frame level is clamped between the first clamping plate and the second clamping plate and abuts against the base plate.

[0010] This configuration allows the frame level to be horizontally limited by the first and second clamping plates, and combined with the vertical support of the base plate, it enables stable positioning of the frame level, preventing lateral displacement during adjustment or measurement. It also reduces the risk of component loosening and further ensures the stability and accuracy of level adjustment and measurement.

[0011] Optionally: the base plate has a mating surface on the side away from the fixing attachment that is adapted to the surface of the component being measured. The mating surface has a planar structure and the roughness of the mating surface is ≤Ra1.6μm.

[0012] This planar structure ensures full contact between the contact surface and the surface of the component being measured, reducing gaps caused by uneven contact surfaces and preventing the frame level from shifting its measurement reference due to the tilt of the support platform. In addition, the low roughness (≤Ra1.6μm) of the contact surface reduces frictional resistance, facilitating smooth movement or adjustment of the device position, while also reducing the impact of impurities on the contact surface on the contact accuracy, further ensuring the accuracy and ease of operation of the frame level.

[0013] Optionally: the above-mentioned fixing accessory has a pressure plate, and the side of the pressure plate near the support platform has a plurality of elastic buffer pads, which elastically abut against the top of the frame level.

[0014] This configuration allows for flexible fixation of the frame level by elastically abutting against several of the aforementioned elastic buffer pads, facilitating the adjustment mechanism's horizontal adjustment of the frame level. At the same time, it avoids damage or deformation to the frame level caused by rigid pressing, and the elastic buffering can offset slight vibrations during adjustment or measurement, reducing the impact on the frame level's posture stability and ensuring measurement accuracy.

[0015] Optionally: Both ends of the pressure plate are provided with a first through hole and a second through hole, both ends of the first clamping plate and the second clamping plate are provided with a first fastening groove and a second fastening groove, a first annular fastener is fastened between the first through hole and the first fastening groove, and a second annular fastener is fastened between the second through hole and the second fastening groove.

[0016] This design simplifies the fixing and disassembly of the frame level; at the same time, the first and second annular fasteners can stably limit the vertical displacement of the pressure plate, ensuring the reliability of fixing the frame level and further improving the ease of use and stability of the device.

[0017] Optionally: the above-mentioned adjustment mechanism has a first screw and a second screw located at both ends of the above-mentioned frame level; The bottom of the aforementioned frame level is equipped with an adjustment plate, which rests against the inner bottom surface of the aforementioned support platform. The length of the adjustment plate is greater than the length of the aforementioned frame level. The threads of the first screw and the second screw penetrate the adjusting plate and abut against the inner bottom surface of the support platform.

[0018] With this configuration, by turning the first screw and the second screw at both ends respectively, the corresponding ends of the adjustment plate are driven to rise and fall, thereby achieving precise fine-tuning of the attitude of the frame level and meeting the requirement of zeroing the bubble. In addition, the length of the adjustment plate is greater than the length of the frame level, which can provide stable installation support for the first screw and the second screw.

[0019] Optionally: the frame level has a window in the middle, a bubble tube at the bottom of the window, graduation lines on the outer surface of the bubble tube, and a bubble inside the bubble tube.

[0020] With this setup, the window directly exposes the bubble tube, allowing operators to clearly observe the bubble's position. In addition, the scale lines outside the bubble tube provide a precise reference for the bubble's position, helping to quickly determine whether the frame level is level, thus efficiently completing the leveling adjustment and ensuring the accuracy of subsequent measurements.

[0021] Optionally, the adjustment plate is provided with a first screw hole and a second screw hole at the positions corresponding to the first screw and the second screw, respectively, and the first screw and the second screw are threaded into the first screw hole and the second screw hole, respectively.

[0022] This configuration, through threaded engagement, enables precise lifting and lowering adjustment of the first and second screws along the axes of the first and second screw holes, respectively. This avoids adjustment errors caused by misalignment of the first and second screws, ensuring the accuracy of fine-tuning the frame level's posture. Furthermore, the threaded connection has self-locking properties, which can fix the adjusted positions of the first and second screws, preventing the screws from loosening after adjustment and ensuring the stability of the frame level's posture.

[0023] Optionally, some of the above-mentioned elastic cushioning pads are made of rubber.

[0024] With this design, the rubber material has good elasticity and cushioning, which can effectively absorb the rigid force when the pressure plate is fixed, avoiding indentations or damage to the surface of the frame level. At the same time, it facilitates the lifting and lowering adjustment of both ends of the frame level.

[0025] Optionally, the surface of the aforementioned support platform is provided with an anti-rust coating.

[0026] With this configuration, the anti-rust coating can form a protective barrier on the surface of the support platform, effectively isolating corrosive media such as air and moisture from contact with the platform substrate, and preventing problems such as surface unevenness and reduced structural strength caused by rust. In addition, it prevents rust impurities from affecting the placement stability or adjustment accuracy of the frame level.

[0027] Optionally, both the first screw and the second screw have a nut at the end away from the adjusting plate, and the outer surface of the nut has anti-slip texture.

[0028] With this setup, adjustment can be achieved by rotating the aforementioned nut, which can be operated manually without additional tools (a wrench can also be used to rotate the aforementioned nut). This simplifies the operation process of adjusting the level's posture. The anti-slip texture can prevent slippage when tightening, ensuring that the operator can apply stable force to accurately control the raising and lowering of the aforementioned first screw and the aforementioned second screw.

[0029] In summary, the frame-type level adjustment device disclosed in this invention has the beneficial effects of reducing the labor intensity of on-site operators, saving time and effort in measurement, increasing work efficiency, accelerating the maintenance progress of hydro-generator units, and achieving efficient and high-precision level measurement. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional view of a frame-type level adjustment device according to an embodiment of the present invention; Figure 2 This is a front view of a frame-type level adjustment device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the assembly of the adjustment device and the frame level in an embodiment of the present invention; Figure 4 This is an assembly diagram of the frame level, adjusting plate, and adjusting mechanism in an embodiment of the present invention.

[0032] Icons: 1-Support platform, 2-Adjustment mechanism, 3-Fixing accessory, 4-Frame level, 5-Base plate, 6-First clamping plate, 7-Second clamping plate, 8-Mating surface, 9-Pressure plate, 10-Elastic buffer pad, 11-First through hole, 12-Second through hole, 13-First fastening groove, 14-Second fastening groove, 15-First ring fastener, 16-Second ring fastener, 17-First screw, 18-Second screw, 19-Adjusting plate, 20-Window, 21-Bubble tube, 22-First screw hole, 23-Second screw hole, 24-Nut. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0035] Example See Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment proposes a frame-type level adjustment device, including a support platform 1; The support platform 1 is equipped with adjustment mechanisms 2 at both ends, and a fixing accessory 3 is provided at the top of the support platform 1; The support platform 1 is equipped with a detachable frame level 4; the adjustment mechanism 2 is mounted on both ends of the bottom of the frame level 4 and abuts against the inner bottom surface of the support platform 1. The attitude of the frame level 4 is adjusted by rotating the adjustment mechanism 2 so that the bubble of the frame level 4 is at the center zero mark. The support platform 1 carries the frame level 4 and is adapted to the surface of the part being measured. By rotating or changing the position of the adjustment device, the level of the part at different positions can be detected.

[0036] In use, first, install the detachable frame level 4 into the support platform 1, and then fix the frame level 4 to the top of the support platform 1 with the fixing accessory 3 to prevent the level from shifting during adjustment or testing; then operate the adjustment mechanism 2 at both ends of the support platform 1 (the adjustment mechanism 2 is assembled at both ends of the bottom of the frame level 4 and abuts against the inner bottom surface of the support platform 1), and change the posture of the frame level 4 by rotating the adjustment mechanism 2 until the bubble of the frame level 4 is at the center zero mark, thus completing the measurement benchmark calibration; finally, place the support platform 1 carrying the frame level 4 onto the surface of the part to be measured, and by rotating the adjustment device as a whole or changing its position on the part to be measured, the level status of the part at different positions can be detected.

[0037] The frame level adjustment device disclosed in this embodiment, with its dedicated support platform 1, adjustment mechanisms 2 at both ends, and fixing attachment 3 at the top, eliminates the need for traditional shims. By rotating the adjustment mechanism 2, the posture of the frame level 4 can be precisely fine-tuned, quickly returning the bubble to its original position. This solves the problems of trial and error with shim thickness and easy displacement, significantly improving adjustment efficiency. Furthermore, the support platform 1 provides stable support for the frame level 4, and the fixing attachment 3 prevents displacement. The device can also detect the level of different components by rotating or changing its position, ensuring the reliability of the measurement benchmark and adapting to the dynamic level measurement needs of components such as the mirror plate and rotor circular measuring frame of the hydro-generator unit. This effectively reduces on-site work intensity and avoids delays in maintenance due to time-consuming adjustments. Therefore, this frame level adjustment device offers the advantages of reduced labor intensity for on-site workers, time-saving and labor-saving measurement, high work efficiency, accelerated maintenance of hydro-generator units, and efficient and high-precision level measurement.

[0038] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The support platform 1 has a base plate 5, and the top surface of the base plate 5 has a first clamping plate 6 and a second clamping plate 7 that are parallel to each other and spaced apart. The base plate 5, the first clamping plate 6 and the second clamping plate 7 are integrally formed. The frame level 4 is clamped between the first clamping plate 6 and the second clamping plate 7 and abuts against the base plate 5. In this way, the first clamping plate 6 and the second clamping plate 7 can form a lateral limit for the frame level 4. Combined with the vertical support of the base plate 5, the frame level 4 can be stably positioned and placed, avoiding lateral displacement of the frame level 4 during adjustment or measurement. At the same time, it reduces the risk of component loosening and further ensures the stability and accuracy of level adjustment and measurement.

[0039] The base plate 5 has a mating surface 8 on the side away from the fixed attachment 3 that is adapted to the surface of the part being measured. The mating surface 8 has a planar structure and a roughness of ≤Ra1.6μm. This planar structure ensures that the mating surface 8 is in full contact with the surface of the part being measured, reduces gaps caused by uneven contact surfaces, and avoids the frame level 4 from shifting its measurement reference due to the tilt of the support platform 1. In addition, the low roughness (≤Ra1.6μm) of the mating surface 8 can reduce the frictional resistance of the contact surface, making it easier to move or adjust the position of the device smoothly. At the same time, it reduces the influence of impurities on the contact surface on the mating accuracy, further ensuring the accuracy and ease of operation of the frame level 4.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The fixing accessory 3 has a pressure plate 9. The side of the pressure plate 9 closest to the support platform 1 has several elastic buffer pads 10. The elastic buffer pads 10 elastically abut against the top of the frame level 4. This allows the frame level 4 to be flexibly fixed by the elastic abutment of the several elastic buffer pads 10, which facilitates the adjustment mechanism 2 to adjust the frame level 4 horizontally. At the same time, it avoids the rigid pressing that may cause damage or deformation to the frame level 4. It also uses elastic buffering to offset the slight vibrations during the adjustment or measurement process, reducing the impact on the posture stability of the frame level 4 and ensuring measurement accuracy.

[0041] Both ends of the pressure plate 9 are provided with a first through hole 11 and a second through hole 12. Both ends of the first clamping plate 6 and the second clamping plate 7 are provided with a first fastening groove 13 and a second fastening groove 14. A first annular fastener 15 is fastened between the first through hole 11 and the first fastening groove 13, and a second annular fastener 16 is fastened between the second through hole 12 and the second fastening groove 14. This arrangement simplifies the fixing and disassembly of the frame level 4. At the same time, the first annular fastener 15 and the second annular fastener 16 can stably limit the vertical displacement of the pressure plate 9, ensuring the reliability of fixing the frame level 4, and further improving the ease of use and stability of the device.

[0042] See Figure 1 , Figure 2 , Figure 3 and Figure 4The adjustment mechanism 2 has a first screw 17 and a second screw 18 located at both ends of the frame level 4; the bottom of the frame level 4 is provided with an adjustment plate 19, which abuts against the inner bottom surface of the support platform 1, and the length of the adjustment plate 19 is greater than the length of the frame level 4; the threads of the first screw 17 and the second screw 18 pass through the adjustment plate 19 and abut against the inner bottom surface of the support platform 1. By turning the first screw 17 and the second screw 18 at both ends respectively, the corresponding ends of the adjustment plate 19 are driven to rise and fall, so as to achieve precise fine adjustment of the attitude of the frame level 4 and meet the requirement of zeroing the bubble; in addition, the length of the adjustment plate 19 is greater than the length of the frame level 4, which can provide stable installation support for the first screw 17 and the second screw 18.

[0043] The frame level 4 has a window 20 in the middle, and a bubble tube 21 is provided at the bottom of the window 20. The outer surface of the bubble tube 21 has scale lines (not shown in the figure), and there is a bubble inside the bubble tube 21 (not shown in the figure). The window 20 can directly expose the bubble tube 21, making it easy for the operator to clearly observe the position of the bubble. In addition, the scale lines on the outside of the bubble tube 21 can provide a precise reference for the position of the bubble, helping to quickly determine whether the frame level 4 is in a horizontal state, thereby efficiently completing the leveling adjustment and ensuring the accuracy of subsequent measurements.

[0044] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The adjusting plate 19 has a first screw hole 22 and a second screw hole 23 respectively corresponding to the positions of the first screw 17 and the second screw 18. The first screw 17 and the second screw 18 are threaded into the first screw hole 22 and the second screw hole 23 respectively. Through the threaded engagement, the first screw 17 and the second screw 18 can be precisely raised and lowered along the axis of the first screw hole 22 and the second screw hole 23 respectively, avoiding adjustment errors caused by the offset of the first screw 17 and the second screw 18, and ensuring the accuracy of the frame level 4's attitude fine adjustment. In addition, the threaded connection has self-locking property, which can fix the adjusted positions of the first screw 17 and the second screw 18, preventing the screws of the frame level 4 from loosening after adjustment, and ensuring the stability of the frame level 4's attitude.

[0045] Several elastic buffer pads 10 are made of rubber. Rubber has good elasticity and cushioning properties, which can effectively absorb the rigid force when the pressure plate 9 is fixed, avoid causing indentations or damage to the surface of the frame level 4, and facilitate the lifting and lowering adjustment of both ends of the frame level 4.

[0046] See Figure 1 , Figure 2 , Figure 3 and Figure 4The surface of the support platform 1 is provided with an anti-rust coating (not shown in the figure). The anti-rust coating can form a protective barrier on the surface of the support platform 1, effectively isolating the contact between corrosive media such as air and moisture and the platform substrate, avoiding problems such as surface unevenness and reduced structural strength due to rust. In addition, it prevents rust impurities from affecting the placement stability or adjustment accuracy of the frame level 4.

[0047] Both the first screw 17 and the second screw 18 have nuts 24 at the ends away from the adjusting plate 19. The outer surface of the nuts 24 has anti-slip texture (not shown in the figure). Adjustment can be achieved by rotating the nuts 24. No additional tools are required for manual operation (a wrench can also be used to rotate the nuts 24). This simplifies the operation process of adjusting the level. The anti-slip texture can prevent slippage when tightening, ensuring that the operator can apply force stably to accurately control the raising and lowering of the first screw 17 and the second screw 18.

[0048] See Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the frame level adjustment device achieves stable assembly and precise attitude adjustment of the frame level 4 through the coordinated structure of "support platform 1 - adjustment mechanism 2 - fixing attachment 3": the support platform 1 provides a suitable installation space for the frame level 4, and the fixing attachment 3 at its top can firmly lock the level to prevent lateral displacement during adjustment or measurement. In addition, several elastic buffer pads 10 elastically press the frame level 4, making the frame level 4 less prone to shaking, and the adjustment mechanism 2 can adjust the height of both ends of the frame level 4; the adjustment mechanisms 2 at both ends are assembled to the frame level by means of threaded connection. The adjustment plate 19 at the bottom of the level 4 abuts against the inner bottom surface of the support platform 1. The operator only needs to rotate the adjustment mechanism 2 to drive the corresponding end of the level to rise and fall, quickly adjusting the bubble to the center zero mark, without relying on traditional trial and error operations with pads. At the same time, the bottom of the support platform 1 can fit and conform to the surface of the component being measured, stabilizing the calibrated level in the measurement position. Subsequently, by rotating the device as a whole or changing its placement position on the component being measured, the level detection of different components and positions of the hydro-generator set mirror plate, rotor measuring frame, etc. can be efficiently completed, fully adapting to the dynamic measurement needs on site, and taking into account both adjustment accuracy and ease of operation.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A frame-type level adjustment device, characterized in that: Including the support platform (1); The support platform (1) is provided with adjustment mechanisms (2) at both ends, and a fixing attachment (3) is provided at the top of the support platform (1); The support platform (1) is equipped with a detachable frame level (4); the adjustment mechanism (2) is mounted on both ends of the bottom of the frame level (4) and abuts against the inner bottom surface of the support platform (1). The posture of the frame level (4) can be adjusted by rotating the adjustment mechanism (2). The support platform (1) carries the frame level (4) and is adapted to the surface of the component being measured.

2. The frame-type level adjustment device according to claim 1, characterized in that: The support platform (1) has a base plate (5), and the top surface of the base plate (5) has a first clamping plate (6) and a second clamping plate (7) that are parallel to each other and spaced apart. The base plate (5), the first clamping plate (6) and the second clamping plate (7) are integrally formed. The frame level (4) is clamped between the first clamping plate (6) and the second clamping plate (7) and abuts against the base plate (5).

3. The frame-type level adjustment device according to claim 2, characterized in that: The base plate (5) has a mating surface (8) on the side away from the fixing attachment (3) that is adapted to the surface of the component being tested. The mating surface (8) is a planar structure and the roughness of the mating surface (8) is ≤Ra1.6μm.

4. The frame-type level adjustment device according to claim 2, characterized in that: The fixed attachment (3) has a pressure plate (9), and the side of the pressure plate (9) near the support platform (1) has a plurality of elastic buffer pads (10), which elastically abut against the top of the frame level (4).

5. The frame-type level adjustment device according to claim 4, characterized in that: The pressure plate (9) has a first through hole (11) and a second through hole (12) at both ends. The first clamping plate (6) and the second clamping plate (7) have a first fastening groove (13) and a second fastening groove (14) at both ends. A first ring fastener (15) is fastened between the first through hole (11) and the first fastening groove (13). A second ring fastener (16) is fastened between the second through hole (12) and the second fastening groove (14).

6. The frame-type level adjustment device according to claim 1, characterized in that: The adjustment mechanism (2) has a first screw (17) and a second screw (18) located at both ends of the frame level (4); The bottom of the frame level (4) is provided with an adjustment plate (19), which abuts against the inner bottom surface of the support platform (1). The length of the adjustment plate (19) is greater than the length of the frame level (4). The threads of the first screw (17) and the second screw (18) pass through the adjusting plate (19) and abut against the inner bottom surface of the support platform (1).

7. The frame-type level adjustment device according to claim 1, characterized in that: The frame level (4) has a window (20) in the middle, and a bubble tube (21) is provided at the bottom of the window (20). The outer surface of the bubble tube (21) has scale lines, and there is a bubble inside the bubble tube (21).

8. A frame-type level adjustment device according to claim 6, characterized in that: The adjusting plate (19) has a first screw hole (22) and a second screw hole (23) respectively corresponding to the positions of the first screw (17) and the second screw (18). The first screw (17) and the second screw (18) are threaded into the first screw hole (22) and the second screw hole (23) respectively.

9. The frame-type level adjustment device according to claim 1, characterized in that: Several of the elastic buffer pads (10) are made of rubber.

10. A frame-type level adjustment device according to claim 1, characterized in that: The surface of the support platform (1) is provided with an anti-rust coating.

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