Gap detection device

Abstract

The utility model discloses a kind of gap detection devices, it includes: the first feeler gauge sheet that can be moved along a straight line direction;Second feeler gauge sheet, second feeler gauge sheet is set side by side with first feeler gauge sheet, and second feeler gauge sheet can be moved in the direction away from or close to first feeler gauge sheet;First displacement sensor, first displacement sensor is set in the side of first feeler gauge sheet, in the state of determining the relative position of first feeler gauge sheet and second feeler gauge sheet, first displacement sensor is used to obtain the moving distance of first feeler gauge sheet;Second displacement sensor, second displacement sensor is set in the side of second feeler gauge sheet, in the state of determining the relative position of first feeler gauge sheet and second feeler gauge sheet, second displacement sensor is used to obtain the moving distance of second feeler gauge sheet.The utility model solves the technical problem that existing feeler gauge can only carry out single measuring point detection, and there is tedious operation, low precision.

Description

Technical Field

[0001] This utility model relates to the field of gap measurement technology, and more particularly to a gap detection device, especially a device capable of detecting gaps at the micrometer level. Background Technology

[0002] A feeler gauge, also known as a thickness gauge or gap gauge, is composed of many layers of thin steel sheets of varying thicknesses. Each sheet in a feeler gauge has two parallel measuring planes and thickness markings for combined use. During measurement, depending on the gap size, one or more thin steel sheets are overlapped and inserted into the gap. For example, if a 0.03mm thin steel sheet can be inserted into the gap, while a 0.04mm thin steel sheet cannot, this indicates the gap is between 0.03 and 0.04mm. Therefore, a feeler gauge is also a type of limit gauge.

[0003] In practical applications, feeler gauges can be used to measure the clearance between two mating surfaces, such as the piston and cylinder, piston ring groove and piston ring, crosshead slide and guide plate, top of intake and exhaust valve and rocker arm, and gear meshing clearance. However, existing feeler gauges can only measure a single point at a time during the testing process. If a ring-shaped clearance is to be measured, repeated measurements are required, which is not only cumbersome but also requires readjustment of the feeler gauge position after each measurement, resulting in low accuracy and large errors.

[0004] Therefore, this utility model proposes a gap detection device to overcome the defects of the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a gap detection device that can continuously detect gaps without repeated adjustments to the device, offering high detection accuracy and ease of operation.

[0006] Another objective of this invention is to provide a gap detection device that can detect gaps while displaying data and generating gap diagrams for different positions, making the process more intuitive and enabling workers to directly obtain gap data at different positions.

[0007] The objective of this utility model can be achieved by the following solutions:

[0008] This utility model provides a gap detection device, the gap detection device comprising:

[0009] A first feeler gauge piece that can move along a straight line;

[0010] The second feeler gauge piece is arranged side by side with the first feeler gauge piece, and the second feeler gauge piece can move away from or towards the first feeler gauge piece;

[0011] A first displacement sensor is disposed on one side of the first feeler gauge piece. When the relative positions of the first feeler gauge piece and the second feeler gauge piece are determined, the first displacement sensor is used to obtain the moving distance of the first feeler gauge piece.

[0012] The second displacement sensor is disposed on one side of the second feeler gauge piece. When the relative positions of the first feeler gauge piece and the second feeler gauge piece are determined, the second displacement sensor is used to obtain the moving distance of the second feeler gauge piece.

[0013] In a preferred embodiment of the present invention, the gap detection device further includes a first limiting guide component, the first limiting guide component having a first moving block that can move along a first straight line direction, the first feeler gauge being vertically arranged, and the bottom of the first feeler gauge being connected to the first moving block.

[0014] In a preferred embodiment of the present invention, the gap detection device further includes a second limiting guide component, the second limiting guide component having a second moving block that can move along a second straight line direction, the second feeler gauge being vertically arranged, and the bottom of the second feeler gauge being connected to the second moving block;

[0015] The second straight line direction is parallel to the first straight line direction and is at the same height.

[0016] In a preferred embodiment of the present invention, the first limiting guide assembly includes a first guide rod extending along the first straight line direction, with a first mounting block and a first limiting block respectively connected to both ends of the first guide rod, the first moving block being slidably sleeved on the first guide rod, and a first spring being sleeved on the first guide rod at a position between the first moving block and the first limiting block, with both ends of the first spring being connected to the first moving block and the first limiting block respectively.

[0017] In a preferred embodiment of the present invention, the second limiting guide assembly includes a second guide rod extending along the second straight direction, with a second mounting block and a second limiting block respectively connected to both ends of the second guide rod, the second moving block being slidably sleeved on the second guide rod, and a second spring being sleeved on the second guide rod at a position between the second moving block and the second limiting block, with both ends of the second spring being connected to the second moving block and the second limiting block respectively.

[0018] In a preferred embodiment of the present invention, the first displacement sensor is disposed on the first guide rod, and / or the second displacement sensor is disposed on the second guide rod.

[0019] In a preferred embodiment of the present invention, the gap detection device further includes an outer shell with a cavity formed inside, the first limiting guide component and the second limiting guide component are both located inside the cavity, the first mounting block and the second mounting block are respectively fixed on the bottom wall of the cavity, and the first limiting block and the second limiting block are respectively fixed on two opposite inner walls of the cavity.

[0020] In a preferred embodiment of the present invention, the outer shell has an opening through which at least a portion of the first feeler gauge and at least a portion of the second feeler gauge extend to the outside of the chamber.

[0021] In a preferred embodiment of the present invention, the gap detection device further includes a length measuring element disposed on the housing, the length measuring element being used to detect the distance the gap detection device moves as a whole during the gap detection process.

[0022] In a preferred embodiment of this utility model, a display screen is provided on the outer shell, and the display screen is used to display the gap size corresponding to the gap detection device moving to different positions.

[0023] As described above, the features and advantages of the gap detection device of this utility model are:

[0024] A first and second feeler gauge, arranged side-by-side and movable relative to each other, are used in conjunction. After determining the initial distance between the first and second feeler gauges, they are inserted into the gap to be tested. The positions of the first and / or second feeler gauges are adaptively adjusted according to the gap width, causing them to move relative to their initial positions. During this movement, a first displacement sensor acquires the real-time movement distance of the first feeler gauge, and a second displacement sensor acquires the real-time movement distance of the second feeler gauge. By combining the initial distance between the first and second feeler gauges with the movement distances detected by the first and / or second displacement sensors, the gap width at the corresponding detection position can be determined. This allows for direct and accurate acquisition of gap width data, resulting in high detection precision.

[0025] In actual testing, after completing the measurement at one position, the first and second feeler gauge pieces can be moved directly along the length of the gap. After moving to the next gap position, the gap width at that gap position can be obtained again by changing the moving position of the first and / or second feeler gauge pieces. Therefore, continuous detection of the gap in the extension direction can be achieved without repeatedly adjusting the detection device. Compared with the repeated operation of feeler gauges, it is simpler and easier to operate.

[0026] In addition, during the inspection process, the gap detection data at different locations can be directly displayed graphically (i.e., forming a gap diagram), which is more intuitive and allows staff to directly obtain gap data at different locations. Attached Figure Description

[0027] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0028] Figure 1 This is a perspective view of the gap detection device of this utility model;

[0029] Figure 2 This is a schematic diagram of the internal structure of the gap detection device of this utility model;

[0030] Figure 3 This is the first limiting guide component in the gap detection device of this utility model;

[0031] Figure 4 This is the second limiting guide component in the gap detection device of this utility model;

[0032] Figure 5 The gap diagrams generated by the gap detection device of this utility model correspond to different positions.

[0033] The reference numerals in the accompanying drawings of this utility model are:

[0034] 1. First feeler gauge piece; 2. Second feeler gauge piece;

[0035] 3. Outer shell; 301. Opening;

[0036] 302. Display screen; 303. Chamber;

[0037] 4. Length measuring element; 5. First limit guide assembly;

[0038] 501. First guide rod; 502. First spring;

[0039] 503. First movable block; 504. First mounting block;

[0040] 505. First limiting block; 6. Second limiting guide assembly;

[0041] 601. Second guide rod; 602. Second spring;

[0042] 603. Second movable block; 604. Second mounting block;

[0043] 605. Second limit block; 7. First displacement sensor;

[0044] 8. Second displacement sensor. Detailed Implementation

[0045] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0046] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] like Figures 1 to 5 As shown, this utility model provides a gap detection device, which includes a first feeler gauge 1, a second feeler gauge 2, a first displacement sensor 7, and a second displacement sensor. The second feeler gauge 2 is arranged side by side with the first feeler gauge 1 and they are close to each other. The first feeler gauge 1 can move along a horizontal straight line, and the second feeler gauge 2 can also move along a horizontal straight line. The second feeler gauge 2 can move relative to the first feeler gauge 1 in a direction away from or towards the first feeler gauge 1 (i.e., the first feeler gauge 1 can move relative to the second feeler gauge 2 in a direction away from or towards the second feeler gauge 2). The first displacement sensor 7 is located on one side of the first feeler gauge 1, and the second displacement sensor 8 is located on one side of the second feeler gauge 2. During use, when the relative positions of the first feeler gauge 1 and the second feeler gauge 2 are determined, if the first feeler gauge 1 moves again, the first displacement sensor 7 can obtain the moving distance of the first feeler gauge 1; and if the second feeler gauge 2 moves again, the second displacement sensor 8 can obtain the moving distance of the second feeler gauge 2.

[0049] In this invention, a first feeler gauge 1 and a second feeler gauge 2, arranged side-by-side and movable relative to each other, are used in conjunction. After determining the initial distance between the first feeler gauge 1 and the second feeler gauge 2, they are inserted into the gap to be tested. The positions of the first feeler gauge 1 and / or the second feeler gauge 2 are adaptively adjusted according to the width of the gap, causing them to move relative to their initial positions. During this movement, the first displacement sensor 7 acquires the real-time movement distance of the first feeler gauge 1, and the second displacement sensor 8 acquires the real-time movement distance of the second feeler gauge 2. By combining the initial distance between the first feeler gauge 1 and the second feeler gauge 2 with the movement distance detected by the first displacement sensor 7 and / or the second displacement sensor 8, the gap width at the corresponding testing position can be determined. This allows for the direct acquisition of accurate gap width data. Compared to measurement methods using feeler gauges, which can only determine the gap width within a certain range, the detection device of this application can accurately acquire gap width data, resulting in higher detection accuracy.

[0050] In actual testing, after completing a measurement at one position, the testing device simply moves the first feeler gauge 1 and the second feeler gauge 2 along the length of the gap. Upon moving to the next gap position, the gap width at that position is obtained again by changing the position of the first feeler gauge 1 and / or the second feeler gauge 2. Therefore, continuous gap detection in the length direction can be achieved without repeated adjustments to the testing device. Compared to the repetitive operation of existing feeler gauges, this method is simpler and easier to operate. Furthermore, during the testing process, gap detection data at different positions can be directly displayed graphically (i.e., forming a gap diagram), providing a more intuitive view and allowing operators to directly obtain gap data at different positions.

[0051] In one optional embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the gap detection device also includes a first limiting guide assembly 5, which has a first moving block 503 that can move along a first straight line. The first feeler gauge 1 is a thin steel sheet arranged vertically, and the bottom of the first feeler gauge 1 is connected to the first moving block 503. Thus, during the detection process, the moving position of the first feeler gauge 1 can be adjusted by moving the first moving block 503 to adjust the moving position of the first feeler gauge 1 according to the width of the gap.

[0052] The same, such as Figure 2 and Figure 4As shown, the gap detection device also includes a second limiting guide assembly 6, which has a second moving block 603 that can move along a second straight line. The second feeler gauge 2 is a vertically arranged thin steel sheet, and the bottom of the second feeler gauge 2 is connected to the second moving block 603. Therefore, during the detection process, the moving position of the second feeler gauge 2 can be adjusted by moving the second moving block 603 to adjust the moving position of the second feeler gauge 2 according to the gap width. The second straight line direction is parallel to the first straight line direction and at the same height to ensure that the first feeler gauge 1 and the second feeler gauge 2 can move relative to each other. This ensures that the distance between the first feeler gauge 1 and the second feeler gauge 2 is the width of the gap at the detected position, guaranteeing the accuracy of the detection.

[0053] In one optional embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the first limiting guide assembly 5 includes a first guide rod 501 extending along a first straight line. The first guide rod 501 has a cylindrical structure, and the first moving block 503 has a cylindrical structure. One end of the first guide rod 501 is connected to the first mounting block 504, and the other end of the first guide rod 501 is connected to the first limiting block 505. The first moving block 503 is slidably sleeved on the first guide rod 501. A first spring 502 is sleeved on the first guide rod 501 at a position between the first moving block 503 and the first limiting block 505. One end of the first spring 502 is connected to the first moving block 503, and the other end of the first spring 502 is provided with the first limiting block 505. When the width of the gap is less than the initial distance between the first feeler gauge 1 and the second feeler gauge 2, after the first feeler gauge 1 and the second feeler gauge 2 are inserted into the gap, the first feeler gauge 1 and the second feeler gauge 2 will move towards each other. The movement of the first feeler gauge 1 will stretch the first spring 502, so that the first feeler gauge 1 can abut against the inner wall of one side of the gap, which has the function of fixing the position of the first feeler gauge 1 in the gap.

[0054] The same, such as Figure 2 and Figure 4As shown, the second limiting guide assembly 6 includes a second guide rod 601 extending along the second straight line direction. The second guide rod 601 has a cylindrical structure, and the second moving block 603 has a cylindrical structure. One end of the second guide rod 601 is connected to the second mounting block 604, and the other end of the second guide rod 601 is connected to the second limiting block 605. The second moving block 603 is slidably sleeved on the second guide rod 601. A second spring 602 is sleeved on the second guide rod 601 at a position between the second moving block 603 and the second limiting block 605. One end of the second spring 602 is connected to the first moving block 503, and the other end of the second spring 602 is provided with the second limiting block 605. When the width of the gap is less than the initial distance between the first feeler gauge 1 and the second feeler gauge 2, after the first feeler gauge 1 and the second feeler gauge 2 are inserted into the gap, the first feeler gauge 1 and the second feeler gauge 2 will move towards each other. The movement of the second feeler gauge 2 will stretch the second spring 602, so that the second feeler gauge 2 can abut against the inner wall of the opposite side of the gap, which has the function of fixing the position of the second feeler gauge 2 in the gap.

[0055] Furthermore, such as Figure 2 and Figure 3 As shown, the first displacement sensor 7 can be mounted on the first guide rod 501, and the detection end of the first displacement sensor 7 can be directly facing the first feeler gauge 1. Therefore, during the movement of the first feeler gauge 1, the first displacement sensor 7 can accurately detect the movement distance of the first feeler gauge 1.

[0056] Furthermore, such as Figure 2 and Figure 4 As shown, the second displacement sensor 8 can be mounted on the second guide rod 601, and the detection end of the second displacement sensor 8 can be directly facing the second feeler gauge 2. Therefore, during the movement of the second feeler gauge 2, the second displacement sensor 8 can accurately detect the movement distance of the second feeler gauge 2.

[0057] In one optional embodiment of this utility model, such as Figures 1 to 4 As shown, the gap detection device also includes a housing 3 with an internal cavity 303. The housing 3 can be a cuboid shell structure. The first limiting guide component 5 and the second limiting guide component 6 are both located inside the cavity 303. The first mounting block 504 and the second mounting block 604 are respectively fixed to the bottom wall of the cavity 303, while the first limiting block 505 and the second limiting block 605 are respectively fixed to the two opposite inner walls of the cavity 303, so as to realize the installation and configuration of the first limiting guide component 5 and the second limiting guide component 6 inside the housing 3. Furthermore, the housing 3 can effectively protect the first limiting guide component 5, the second limiting guide component 6, the first feeler gauge 1, the second feeler gauge 2, the first displacement sensor 7, and the second displacement sensor 8, and extend the service life of each component.

[0058] Furthermore, such as Figure 1 As shown, the top of the outer casing 3 has an opening 301, which serves as a detection port. At least a portion of the top of the first feeler gauge 1 and at least a portion of the top of the second feeler gauge 2 extend out of the opening 301 to the outside of the chamber 303, so that the gap can be detected through the top of the first feeler gauge 1 and the top of the second feeler gauge 2.

[0059] In one optional embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the gap detection device also includes a length measuring element 4, which is mounted on the housing 3. The length measuring element 4 is used to detect the overall distance the gap detection device moves during gap detection. Therefore, in actual detection, the actual width of the gap at different detection positions can be obtained in real time based on the change in the detection position of the gap detection device within the gap. Figure 5 As shown, this can achieve the purpose of generating gap maps at different positions during the movement of the gap detection device.

[0060] The length measuring element 4 can be, but is not limited to, an encoder. The signal output terminals of the encoder, the first displacement sensor 7, and the second displacement sensor 8 are electrically connected to the signal receiving terminal of the controller. This allows the encoder to collect displacement signals, and the first and second displacement sensors 7 and 8 to be sent to the controller. The controller can then generate a distance based on the overall movement of the gap detection device and the gap width at different movement distances. Figure 5 The gap diagram shown allows staff to intuitively and accurately understand the distribution of gap width at the inspection location.

[0061] Furthermore, such as Figure 1 As shown, a display screen 302 is provided on the outer casing 3. The signal receiving end of the display screen 302 is electrically connected to the signal output end of the controller. The controller can transmit the received data and gap diagram to the display screen 302. The display screen 302 displays the gap data and the gap diagram formed by the gap size corresponding to the gap detection device moving to different positions.

[0062] In the use of the gap detection device of this utility model, the distance between the first feeler gauge 1 and the second feeler gauge 2 is first determined in advance, and this distance is used as the 0 point position for detection. At this time, the first spring 502 and the second spring 602 are both in normal state (neither stretched nor compressed). Then, the first feeler gauge 1 and the second feeler gauge 2 are inserted into the gap to be detected. In order to ensure that the first feeler gauge 1 and the second feeler gauge 2 can respectively abut against the two opposite inner walls of the gap and fix the first feeler gauge 1 and the second feeler gauge 2, the position of the first feeler gauge 1 and / or the second feeler gauge 2 needs to be adjusted, which is divided into the following three cases:

[0063] 1) If the gap width S1 at the gap is exactly the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2, then after inserting the first feeler gauge 1 and the second feeler gauge 2 into the gap position to be detected, the positions of the first feeler gauge 1 and the second feeler gauge 2 will not change. The gap width S1 is equal to the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2, that is, S1 = S2.

[0064] 2) If the gap width S1 at the gap is greater than the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2 (S1 > S2), the operator can manually push the first feeler gauge 1 and / or the second feeler gauge 2 towards the inner wall of the gap. At least one of the first spring 502 and the second spring 602 is in a compressed state. The first displacement sensor 7 and / or the second displacement sensor 8 can detect that the first feeler gauge 1 and / or the second feeler gauge 2 have moved by a first adjustment distance S3 based on the initial distance S2. Then the gap width S1 at this position is equal to the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2 plus the first adjustment distance S3, that is, S1 = S2 + S3.

[0065] 2) If the gap width S1 at the gap is less than the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2 (S1 < S2), then the first feeler gauge 1 and / or the second feeler gauge 2 move toward each other and abut against the two opposite inner walls of the gap respectively. The first displacement sensor 7 and / or the second displacement sensor 8 can detect that the first feeler gauge 1 and / or the second feeler gauge 2 have moved a second adjustment distance S4 based on the initial distance S2. Then the gap width S1 at this position is equal to the initial distance S2 between the first feeler gauge 1 and the second feeler gauge 2 minus the second adjustment distance S4, that is, S1 = S2 - S4.

[0066] As can be seen from the above process, during the actual use of the gap detection device, as the gap detection device moves along its length within the gap, the gap width S1 will change. At this time, the first feeler gauge 1 and / or the second feeler gauge 2 will adapt to move and change their positions, which will cause the detection values ​​of the first displacement sensor 7 and / or the second displacement sensor 8 to change. Based on the original initial distance S2, the change in the values ​​of the first displacement sensor 7 and / or the second displacement sensor 8 can be adaptively added to or subtracted to obtain the gap width at different positions.

[0067] The gap width S1 obtained by the above method, combined with the movement of the gap detection device detected by the length measuring element, can yield the following result: Figure 5 The gap diagram is shown.

[0068] The features and advantages of this gap detection device are:

[0069] I. This gap detection device can continuously detect gaps without repeated adjustments, has high detection accuracy (capable of precise detection of gaps at the micron level), and is easy to operate.

[0070] First, this gap detection device can not only detect gaps, but also display data and generate gap diagrams corresponding to different positions, making it more intuitive and enabling staff to directly obtain gap data at different positions.

[0071] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0072] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0073] The above are merely several embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model.

Claims

1. A gap detection device, characterized in that, The gap detection device includes: A first feeler gauge piece that can move along a straight line; The second feeler gauge piece is arranged side by side with the first feeler gauge piece, and the second feeler gauge piece can move away from or towards the first feeler gauge piece; A first displacement sensor is disposed on one side of the first feeler gauge piece. When the relative positions of the first feeler gauge piece and the second feeler gauge piece are determined, the first displacement sensor is used to obtain the moving distance of the first feeler gauge piece. The second displacement sensor is disposed on one side of the second feeler gauge piece. When the relative positions of the first feeler gauge piece and the second feeler gauge piece are determined, the second displacement sensor is used to obtain the moving distance of the second feeler gauge piece.

2. The gap detection device as described in claim 1, characterized in that, The gap detection device further includes a first limiting guide assembly, which has a first moving block that can move along a first straight line direction. The first feeler gauge is vertically arranged, and the bottom of the first feeler gauge is connected to the first moving block.

3. The gap detection device as described in claim 2, characterized in that, The gap detection device further includes a second limiting guide assembly, which has a second moving block that can move along a second straight line direction. The second feeler gauge is vertically arranged, and the bottom of the second feeler gauge is connected to the second moving block. The second straight line direction is parallel to the first straight line direction and is at the same height.

4. The gap detection device as described in claim 3, characterized in that, The first limiting guide assembly includes a first guide rod extending along the first straight line direction. The two ends of the first guide rod are respectively connected to a first mounting block and a first limiting block. The first moving block is slidably sleeved on the first guide rod. A first spring is sleeved on the first guide rod at a position between the first moving block and the first limiting block. The two ends of the first spring are respectively connected to the first moving block and the first limiting block.

5. The gap detection device as described in claim 4, characterized in that, The second limiting guide assembly includes a second guide rod extending along the second straight line direction. The two ends of the second guide rod are respectively connected to a second mounting block and a second limiting block. The second moving block is slidably sleeved on the second guide rod. The second guide rod is sleeved at a position between the second moving block and the second limiting block. The two ends of the second spring are respectively connected to the second moving block and the second limiting block.

6. The gap detection device as described in claim 5, characterized in that, The first displacement sensor is disposed on the first guide rod, and / or the second displacement sensor is disposed on the second guide rod.

7. The gap detection device as described in claim 5, characterized in that, The gap detection device further includes an outer shell with a cavity inside, the first limiting guide component and the second limiting guide component are both located inside the cavity, the first mounting block and the second mounting block are respectively fixed on the bottom wall of the cavity, and the first limiting block and the second limiting block are respectively fixed on two opposite inner walls of the cavity.

8. The gap detection device as described in claim 7, characterized in that, The outer casing has an opening through which at least a portion of the first feeler gauge and at least a portion of the second feeler gauge extend to the outside of the chamber.

9. The gap detection device as described in claim 7, characterized in that, The gap detection device further includes a length measuring element, which is disposed on the housing and is used to detect the distance the gap detection device moves as a whole during the gap detection process.

10. The gap detection device as described in claim 9, characterized in that, The housing is equipped with a display screen, which is used to display the gap size corresponding to the different positions to which the gap detection device moves.

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