Measuring device

Abstract

The application provides a measuring device for measuring the size of a part, which comprises a detecting assembly, a measuring instrument and a pre-pressing assembly. The detecting assembly comprises a first base and a detecting piece connected to the first base, and the detecting piece is used for abutting against the part to be detected. The trigger end of the measuring instrument is movably abutted against the detecting assembly, and when the detecting piece abuts against the part and moves along a first direction with the part, the detecting piece drives the first base to move along the first direction, so that the measuring instrument displays the moving distance of the first base along the first direction. The pre-pressing assembly is arranged in the first direction and spaced from the first base, and the pre-pressing assembly can exert a pre-pressing force on the first base.

Description

Technical Field

[0001] This application relates to the field of measurement technology, and more particularly to a measuring device. Background Technology

[0002] Currently, height gauges are commonly used for rapid inspection of part dimensions. However, height gauges cannot perform rapid inspection when parts have curved surfaces and require the capture of limit dimensions, resulting in low inspection efficiency. Utility Model Content

[0003] To address the issue of low efficiency in measuring the dimensions of parts using height gauges, this application provides a measuring device with higher detection efficiency.

[0004] This application provides a measuring device for measuring the dimensions of a part. The measuring device includes a detection component, a measuring instrument, and a pre-pressure component. The detection component includes a first base and a detection element. The detection element is connected to the first base and is used to hold the part for detection. The trigger end of the measuring instrument is movably held against the detection component. When the detection element holds the part and moves with the part along a first direction, the detection element drives the first base to move along the first direction, causing the measuring instrument to display the distance the first base has moved along the first direction. The pre-pressure component is spaced apart from the first base along the first direction and can apply a pre-pressure to the first base.

[0005] Understandably, by having the detection element abut against the part, the part's dimensions can be quickly measured, and the part's dimensions can be represented by the distance the detection element moves along a first direction. The trigger end of the measuring instrument actively abuts against the detection element so that the distance the detection element moves along the first direction can be represented by the measuring instrument. The measurement process is relatively simple and can improve the measurement efficiency of the part. Furthermore, a pre-pressure component is provided to apply pre-pressure to the first base, allowing the detection element and the part to fit better together and improving the detection accuracy.

[0006] In one embodiment, the pre-compression component includes a first magnet, and the detection component includes a second magnet, the second magnet being connected to the first base, the first magnet and the second magnet being attracted or repelled.

[0007] In one embodiment, the pre-compression assembly further includes a turntable and a third magnet, the turntable being rotatable relative to the first base, the first magnet and the third magnet being connected to the turntable, the first magnet and the third magnet having opposite magnetic properties.

[0008] In one embodiment, the measuring device further includes a second base, which is spaced apart from the detection component along the first direction, and the turntable is rotatably connected to the second base.

[0009] In one embodiment, the measuring device further includes a connection component, through which the detection component is connected to the measuring instrument, and the connection component is movably connected to the second base.

[0010] In one embodiment, the measuring device further includes a moving component, which includes a first slider and a second slider. The first slider has a sliding hole, and the second slider can pass through the sliding hole and move in the sliding hole along the first direction and the second direction. The second slider is connected to the second base, and the second direction intersects the first direction.

[0011] In one embodiment, the measuring device further includes a locking assembly, which includes a first locking member, a second locking member, and a locking block. The locking block has a first connecting hole and a second connecting hole. The first slider can pass through the first connecting hole, and the second slider can pass through the second connecting hole. Along the first direction, the first locking member can extend into the second connecting hole and abut against the second slider; along the third direction, the second locking member can extend into the first connecting hole and abut against the first slider; the third direction intersects the first direction and the second direction.

[0012] In one embodiment, the connecting assembly includes a guide rod and a top pin. The guide rod is connected to the first base and can move along the first direction with the first base. One end of the top pin abuts against the guide rod and can move along the first direction with the guide rod. The other end of the top pin abuts against the trigger end of the measuring instrument.

[0013] In one embodiment, the measuring device further includes a locking assembly, which includes a movable member and a fourth magnet. The fourth magnet is connected to the movable member and can be attracted to the connecting assembly. The second base has an adjustment hole, through which the movable member can pass and move along a third direction within the adjustment hole. The third direction intersects with the first direction.

[0014] In one embodiment, the locking assembly further includes a limiting member connected to the moving member, and the second base is further provided with a limiting hole. Along the third direction, the limiting member can move in the limiting hole, and the displacement of the limiting member in the third direction is restricted by the hole walls on both sides of the limiting hole on the third direction. Attached Figure Description

[0015] Figure 1 This is a perspective view of a measuring device provided in an embodiment of this application.

[0016] Figure 2 This is a perspective view of the components of a measuring device provided in an embodiment of this application.

[0017] Figure 3 This is a three-dimensional schematic diagram of the detection component and the pre-compression component of a measuring device provided in an embodiment of this application.

[0018] Figure 4 This is a partial schematic diagram of the connection assembly of a measuring device provided in an embodiment of this application.

[0019] Figure 5 This is a rear view schematic diagram of a measuring device provided in an embodiment of this application.

[0020] Figure 6 This is a perspective view of the locking component of a measuring device provided in an embodiment of this application.

[0021] Figure 7 This is a partial schematic diagram of the locking assembly of a measuring device provided in an embodiment of this application.

[0022] Explanation of key component symbols: 100. Measuring device; 1. Detection assembly; 11. First base; 12. Detection piece; 13. Second magnet; 2. Measuring instrument; 3. Preload assembly; 31. First magnet; 32. Turntable; 33. Third magnet; 34. Spacing bolt; 35. Spring plunger; 4. Second base; 41. Adjustment hole; 42. Limiting hole; 5. Connecting assembly; 51. Guide rod; 52. Top pin; 6. Moving assembly; 61. First slider; 611. Sliding hole; 62. Second slider; 7. Locking assembly; 71. First locking element; 72. Second locking element; 73. Locking block; 731. First connecting hole; 732. Second connecting hole; 8. Locking assembly; 81. Moving part; 82. Fourth magnet; 83. Limiting element; 9. Base; 200. Part; 201. Through hole; Z, First direction; Y, Second direction; X, Third direction.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0024] The following description will be given with reference to the accompanying drawings for a more complete description of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the present application. As used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context clearly indicates otherwise. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but without excluding the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless explicitly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant technology and in the content of this application, and should not be interpreted as having an idealized or overly formal meaning.

[0025] like Figure 1 and Figure 2 As shown, this application embodiment provides a measuring device 100 for measuring the dimensions of a part 200. The measuring device 100 includes a detection component 1, a measuring instrument 2, and a pre-pressure component 3. The detection component 1 includes a first base 11 and a detection element 12. The detection element 12 is connected to the first base 11 and is used to hold the part 200 against it for detection.

[0026] For ease of reading, this application introduces a first direction Z, a second direction Y, and a third direction X to describe the embodiments of this application. The first direction Z, the second direction Y, and the third direction X can be three non-parallel straight lines in space; further, the first direction Z, the second direction Y, and the third direction X can be three mutually perpendicular directions in a three-dimensional coordinate system (a three-dimensional Cartesian coordinate system). In subsequent embodiments, the first direction Z is described as the Z-axis direction of the three-dimensional coordinate system, the second direction Y is the Y-axis direction of the three-dimensional coordinate system, and the third direction X is the X-axis direction of the three-dimensional coordinate system.

[0027] The trigger end of the measuring instrument 2 is movably abutted against the detection component 1. When the detection element 12 abuts against the part 200 and moves with the part 200 along the first direction Z, the detection element 12 drives the first base 11 to move along the first direction Z, so that the measuring instrument 2 displays the moving distance of the first base 11 along the first direction Z. The pre-pressure component 3 is spaced apart from the first base 11 along the first direction Z, and the pre-pressure component 3 can apply pre-pressure to the first base 11.

[0028] In this embodiment, the detection element 12 can be a dial indicator, which can be connected to one side of the first base 11 in the first direction Z or one side of the first base 11 in the second direction Y. Alternatively, two detection elements 12 can be provided, respectively connected to one side of the first base 11 in the first direction Z and one side of the first base 11 in the second direction Y. Detection elements 12 located at different positions on the first base 11 can abut against the part 200 to detect the dimensions of different positions of the part 200, depending on the actual situation. The shape of the part 200 can be specifically as follows: Figure 2 As shown, its upper surface may have an arc-shaped undulating surface and a through hole 201 is provided. The detection element 12, located on one side of the first base 11 in the first direction Z, can abut against the surface of the part 200 to detect the surface of the part 200. If it is necessary to detect the part 200's dimensional tolerances, the detection element 12, connected to the first base 11 on the second direction Y, can be inserted into the through hole 201 and abut against the wall of the through hole 201 to detect the part 200's dimensional tolerances. This makes the detection of various dimensions of the part 200 simpler and faster.

[0029] The measuring instrument 2 can be a dial indicator. The trigger end can move relative to the dial indicator body, thereby causing the dial indicator body to generate different distance measurement signals based on the movement distance of the trigger end. When the measuring instrument 2 is in its natural state, the trigger end of the measuring instrument 2 abuts against the detection element 12. At this time, the measuring instrument 2 displays the initial value. When the part 200 needs to be dimensionally measured, the part 200 will abut against the detection element 12 and cause the detection element 12 to move along the first direction Z, which in turn drives the first base 11 to move along the first direction Z. This causes the trigger end to move relative to the dial indicator body along the first direction Z. The distance that the first base 11 moves along the first direction Z is displayed on the dial of the measuring instrument 2 through the rotation of the gear and rack structure inside the measuring instrument 2. The measuring personnel can observe the size of the part 200 through the displayed value of the measuring instrument 2.

[0030] In this embodiment, the pre-compression component 3 can be a magnet, and the first base 11 can also be provided with a magnet. The magnet provided on the pre-compression component 3 and the magnet provided on the first base 11 have the same or opposite magnetic properties. This makes the magnet on the pre-compression component 3 repel or attract the magnet provided on the first base 11. The pre-compression component 3 can apply a magnetic force to the first base 11, and this magnetic force is the pre-compression force.

[0031] In other embodiments, the pre-compression assembly 3 may be spaced apart above the first base 11 along the first direction Z. The pre-compression assembly 3 may include a spring or other elastic element, with one end of the spring abutting against the top of the first base 11. When the part 200 needs to be dimensionally inspected, the part 200 abuts against the inspection element 12. The inspection element 12 moves upward along the first direction Z, requiring the spring to be compressed. The elastic force generated by the compressed spring is applied to the first base 11, and this elastic force is the pre-compression force. The downward force applied to the first base 11 makes the part 200 and the inspection element 12 fit more tightly, ensuring more accurate dimensional inspection of the part 200. The pre-compression assembly 3 can also be spaced along the first direction Z below the first base 11. In this case, the spring in the pre-compression assembly 3 can abut against the bottom of the first base 11, and the part 200 can drive the detection element 12 to move downward along the first direction Z to measure other dimensions of the part 200. At the same time, the spring applies an upward force to the first base 11, which can also ensure that the part 200 fits the detection element 12 better when it moves downward.

[0032] It is understandable that by having the detection element 12 abut against the part 200, the dimensions of the part 200 can be quickly detected, and the dimensions of the part 200 can be reflected by the distance the detection element 12 moves along the first direction Z. The trigger end of the measuring instrument 2 moves against the detection element 12 so that the distance the detection element 12 moves along the first direction Z can be reflected by the measuring instrument 2. The measurement process is relatively simple and can improve the measurement efficiency of the part 200. Furthermore, a pre-pressure component 3 is provided to apply pre-pressure to the first base 11, so that the detection element 12 and the part 200 can fit better together, improving the detection accuracy.

[0033] Further integration Figure 3 As shown, in one embodiment, the pre-compression component 3 includes a first magnet 31, and the detection component 1 includes a second magnet 13. The second magnet 13 is connected to the first base 11, and the first magnet 31 and the second magnet 13 attract or repel each other.

[0034] In this embodiment, the first magnet 31 and the second magnet 13 can have the same magnetism, and the first magnet 31 is disposed above the first base 11. Since magnets with the same magnetism repel each other, the pre-pressure component 3 will apply a downward pre-pressure to the first base 11. After the part 200 abuts against the detection element 12, it will drive the detection element 12 to move upward along the first direction Z. Since the pre-pressure component 3 applies a downward pre-pressure to the first base 11, the part 200 needs to overcome this pre-pressure to drive the detection element 12 to move upward along the first direction Z, so that the detection element 12 and the part 200 fit more tightly and the measurement result is more accurate.

[0035] In other embodiments, the first magnet 31 and the second magnet 13 may have opposite magnetic properties. The first magnet 31 is disposed above the first base 11. Since magnets with opposite magnetic properties attract each other, the pre-pressure component 3 will apply an upward pre-pressure to the first base 11. After the part 200 abuts against the detection element 12, it can drive the detection element 12 to move downward along the first direction Z. Since the pre-pressure component 3 applies an upward pre-pressure to the first base 11, the part 200 needs to overcome this pre-pressure to drive the detection element 12 to move downward along the first direction Z, so that the detection element 12 fits more tightly with the part 200 during the movement along the first direction Z, and the measurement result is more accurate.

[0036] Understandably, the attraction or repulsion between the first magnet 31 and the second magnet 13 can be selected according to the actual situation. If it is necessary for the part 200 to move the first base 11 upward along the first direction Z, then the first magnet 31 and the second magnet 13 are set to repel each other to apply a downward pre-force to the first base 11. If it is necessary for the part 200 to move the first base 11 downward along the first direction Z, then the first magnet 31 and the second magnet 13 are set to attract each other to apply an upward pre-force to the first base 11. The arrangement of the first magnet 31 and the second magnet 13 enables the application of a suitable pre-force to the first base 11, making the part 200 and the detection element 12 fit more closely during the movement of the part 200 along the first direction Z, thereby improving measurement accuracy.

[0037] In one embodiment, the pre-compression component 3 further includes a turntable 32 and a third magnet 33. The turntable 32 is rotatable relative to the first base 11. The first magnet 31 and the third magnet 33 are connected to the turntable 32. The first magnet 31 and the third magnet 33 have opposite magnetic properties.

[0038] In this embodiment, the turntable 32 may be provided with multiple grooves to place the first magnet 31 and the third magnet 33. There may be two first magnets 31 and two third magnets 33. Each first magnet 31 and each third magnet 33 are arranged adjacent to each other, so that the distance between two adjacent magnets is small. When switching, only a small angle needs to be rotated, making it more convenient to use.

[0039] It is understandable that the turntable 32 is equipped with a first magnet 31 and a third magnet 33 with different magnetic properties. By rotating the turntable 32, the appropriate magnet can be adjusted to correspond with the second magnet 13, so as to adapt to the measurement of the dimensions of the part 200 under different conditions and ensure that the measurement is relatively simple and reliable.

[0040] Further integration Figure 4As shown, in one embodiment, the measuring device 100 further includes a second base 4 and a connecting component 5. The second base 4 is spaced apart from the detection component 1 along a first direction Z, and the turntable 32 is rotatably connected to the second base 4. The detection component 1 is connected to the measuring instrument 2 via the connecting component 5, which is movably connected to the second base 4.

[0041] In this embodiment, the first base 11 is connected to the measuring instrument 2 via the connecting component 5. When the first base 11 is moved along the first direction Z, it drives the connecting component 5 to move along the first direction Z and transmits the data to the measuring instrument 2, enabling the measuring instrument 2 to display the dimensions of the part 200. The connecting component 5 is movably connected to the second base 4. The second base 4 may have a movable hole through which the connecting component 5 can pass and move along the first direction Z, allowing it to move relative to the second base 4 when moved along the first direction Z. The second base 4 may also be connected to a dust cover to protect the connecting component 5. The second base 4 has a receiving groove to receive the turntable 32. The turntable 32 can be rotatably connected to the second base 4 by a spacer bolt 34. A spring plunger 35 can also be provided between the turntable 32 and the second base 4 so that the turntable 32 and the second base 4 are relatively fixed after the turntable 32 is adjusted. When the turntable 32 needs to be rotated, the spring plunger 35 can be removed, which is more convenient.

[0042] It is understandable that the second base 4 provides some protection for the connecting component 5, and allows the turntable 32 to be connected to the second base 4 for easy adjustment, and it can correspond to the first base 11 for easy use.

[0043] In one embodiment, the connecting component 5 includes a guide rod 51 and a top pin 52. The guide rod 51 is connected to the first base 11 and can move along the first direction Z with the first base 11. One end of the top pin 52 abuts against the guide rod 51 and can move along the first direction Z with the guide rod 51. The other end of the top pin 52 movably abuts against the trigger end of the measuring instrument 2.

[0044] In this embodiment, one end of the guide rod 51 is connected to the first base 11 in the first direction Z, and the other end abuts against the top pin 52. When the detection element 12 abuts against the part 200 and is driven by the part 200 to move along the first direction Z, it will drive the guide rod 51 to move along the first direction Z, and at the same time drive the top pin 52 to move along the first direction Z, so that the distance that the top pin 52 moves along the first direction Z is converted into a digital display of the measuring instrument 2.

[0045] It is understandable that the guide rod 51 and the top pin 52 are configured so that the size of part 200 can be transmitted to measuring instrument 2 through the detection element 12 and then through the guide rod 51 and the top pin 52, so that measuring instrument 2 can display the distance that the first base 11 moves along the first direction Z, thereby displaying the size of part 200.

[0046] Further integration Figure 5 As shown, in one embodiment, the measuring device 100 further includes a moving component 6, which includes a first slider 61 and a second slider 62. The first slider 61 has a sliding hole 611, and the second slider 62 can pass through the sliding hole 611 and move in the sliding hole 611 along the first direction Z and the second direction Y. The second slider 62 is connected to the second base 4.

[0047] In this embodiment, the measuring device 100 further includes a base 9, a first slider 61 connected to the base 9, and a second slider 62 movably connected to the first slider 61 through a sliding hole 611, and is able to move in the sliding hole 611 along the first direction Z and the second direction Y. Since the second slider 62 is connected to the second base 4, the movement of the second slider 62 can adjust the position of the second base 4, thereby adjusting the position of the detection component 1 connected to the second base 4.

[0048] It is understandable that by setting the movable component 6, the position of the detection component 1 can be adjusted. The position of the detection component 1 can be adjusted according to the actual situation to make subsequent detection more convenient and accurate.

[0049] In one embodiment, the measuring device 100 further includes a locking assembly 7, which includes a first locking member 71, a second locking member 72, and a locking block 73. The locking block 73 has a first connecting hole 731 and a second connecting hole 732. A first slider 61 can pass through the first connecting hole 731, and a second slider 62 can pass through the second connecting hole 732. Along a first direction Z, the first locking member 71 can extend into the second connecting hole 732 and abut against the second slider 62. Along a third direction X, the second locking member 72 can extend into the first connecting hole 731 and abut against the first slider 61.

[0050] In this embodiment, the locking assembly 7 can be located at the intersection of the first slider 61 and the second slider 62, so that both the first slider 61 and the second slider 62 can pass through the locking block 73, and the first slider 61 and the second slider 62 can be fixed relative to the locking block 73 by the first locking member 71 and the second locking member 72, so that the first slider 61 and the second slider 62 will no longer move after adjustment. Both the first locking member 71 and the second locking member 72 can be lock nuts. After the second slider 62 has moved relative to the first slider 61, the first locking member 71 extends into the second connecting hole 732 and abuts against the second slider 62 to limit the displacement of the second slider 62 in the first direction Z. Two second locking members 72 can be provided and located on both sides of the first slider 61 in the third direction X, and the second locking members 72 can abut against both sides of the first slider 61 in the third direction X.

[0051] Understandably, the locking component 7 allows the second slider 62 to be fixed relative to the first slider 61 after its position has been adjusted, thus facilitating subsequent use.

[0052] Further integration Figure 6 and Figure 7 As shown, in one embodiment, the measuring device 100 further includes a locking component 8, which includes a movable member 81 and a fourth magnet 82. The fourth magnet 82 is connected to the movable member 81 and can be attracted to the connecting component 5. The second base 4 has an adjustment hole 41, through which the movable member 81 can pass and move in the third direction X within the adjustment hole 41.

[0053] In this embodiment, the movable member 81 can be a slider, which may have a slot to accommodate the fourth magnet 82. Specifically, the fourth magnet 82 can be attracted to the top pin 52, so that when the fourth magnet 82 faces the top pin 52, the fourth magnet 82 is attracted to the top pin 52, so that the operator needs to apply a magnetic force greater than that of the fourth magnet 82 attracted to the top pin 52 to push the top pin 52 or the movable member 81. When the movable member 81 is located in the adjustment hole 41, the two sides of the movable member 81 in the first direction Z and the second direction Y abut against the hole wall of the adjustment hole 41 and are restricted in displacement in the first direction Z and the second direction Y.

[0054] Understandably, when real-time measurement values ​​need to be read, the movable part 81 can be moved to a state where the fourth magnet 82 is not attached to the top pin 52. At this time, the top pin 52 can move freely along the first direction Z and can move up and down. When only the maximum value needs to be read, the movable part 81 is moved to a state where the fourth magnet 82 is attached to the top pin 52. If the magnetic force is overcome and the top pin 52 is moved upward a certain distance, the top pin 52 will not move downward along the first direction Z because the magnetic force is greater than the weight of the top pin 52. It will stop moving at the highest point, and the measuring instrument 2 will display the maximum value.

[0055] In one embodiment, the locking assembly 8 further includes a limiting member 83 connected to the moving member 81. The second base 4 also has a limiting hole 42. Along the third direction X, the limiting member 83 can move in the limiting hole 42. The limiting member 83 is restricted in its displacement in the third direction X by the hole walls on both sides of the limiting hole 42.

[0056] In this embodiment, the limiting member 83 may be a limiting pin, which can move in the limiting hole 42 along the third direction X, and after moving a certain distance, it will abut against the hole wall of the limiting hole 42 in the third direction X to be restricted to displacement in the third direction X.

[0057] It is understandable that by setting the limiting member 83, the movement of the movable member 81 connected to the limiting member 83 in the third direction X can be restricted, so as to prevent the movable member 81 from moving out of the adjustment hole 41 and causing the movable member 81 to detach from the second base 4, thereby improving the reliability of the movable member 81.

[0058] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A measuring device for measuring the dimensions of a part, characterized in that, The measuring device includes: A detection assembly includes a first base and a detection element, the detection element being connected to the first base and used to abut against the part for detection; A measuring instrument, the trigger end of which is movably abutted against the detection component. When the detection component abuts against the part and moves along the first direction with the part, the detection component drives the first base to move along the first direction, so that the measuring instrument displays the moving distance of the first base along the first direction. A pre-compression component is provided at a distance from the first base along the first direction, and the pre-compression component can apply pre-compression to the first base.

2. The measuring device as described in claim 1, characterized in that, The pre-compression component includes a first magnet, and the detection component includes a second magnet. The second magnet is connected to the first base, and the first magnet and the second magnet attract or repel each other.

3. The measuring device as described in claim 2, characterized in that, The pre-compression assembly also includes a turntable and a third magnet. The turntable is rotatable relative to the first base. The first magnet and the third magnet are connected to the turntable, and the first magnet and the third magnet have opposite magnetic properties.

4. The measuring device as described in claim 3, characterized in that, The measuring device further includes a second base, which is spaced apart from the detection component along the first direction, and the turntable is rotatably connected to the second base.

5. The measuring device as described in claim 4, characterized in that, The measuring device further includes a connecting component, through which the detection component is connected to the measuring instrument, and the connecting component is movably connected to the second base.

6. The measuring device as described in claim 5, characterized in that, The measuring device further includes a moving component, which includes a first slider and a second slider. The first slider has a sliding hole, and the second slider can pass through the sliding hole and move in the sliding hole along the first direction and the second direction. The second slider is connected to the second base, and the second direction intersects the first direction.

7. The measuring device as described in claim 6, characterized in that, The measuring device further includes a locking assembly, which includes a first locking member, a second locking member, and a locking block. The locking block has a first connecting hole and a second connecting hole. The first slider can pass through the first connecting hole, and the second slider can pass through the second connecting hole. Along the first direction, the first locking member can extend into the second connecting hole and abut against the second slider; along the third direction, the second locking member can extend into the first connecting hole and abut against the first slider; the third direction intersects the first direction and the second direction.

8. The measuring device as described in claim 5, characterized in that, The connecting assembly includes a guide rod and a top pin. The guide rod is connected to the first base and can move along the first direction with the first base. One end of the top pin abuts against the guide rod and can move along the first direction with the guide rod. The other end of the top pin abuts against the trigger end of the measuring instrument.

9. The measuring device as described in claim 5, characterized in that, The measuring device further includes a locking assembly, which includes a movable member and a fourth magnet. The fourth magnet is connected to the movable member and can be attracted to the connecting assembly. The second base has an adjustment hole, through which the movable member can pass and move along a third direction within the adjustment hole. The third direction intersects with the first direction.

10. The measuring device as described in claim 9, characterized in that, The locking assembly further includes a limiting member connected to the moving member. The second base also has a limiting hole. Along the third direction, the limiting member can move in the limiting hole. The limiting member's displacement in the third direction is restricted by the hole walls on both sides of the limiting hole on the third direction.

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