A stable support for a caliper

Abstract

The application relates to a stable support for a caliper, which comprises a first supporting rod, a second supporting rod, a third supporting rod, a mounting disc, a lifting assembly, a rotating assembly and a mounting piece, the first supporting rod is vertically arranged and is used for being placed on the ground, the second supporting rod is vertically arranged and is slidably connected to the first supporting rod in the vertical direction, the lifting assembly is used for adjusting the distance between the second supporting rod and the ground, one end of the third supporting rod is rotationally connected to the upper end of the second supporting rod in the horizontal direction, the rotating assembly is used for changing the angle between the second supporting rod and the third supporting rod, the mounting disc is arranged on the second supporting rod, the mounting piece is arranged on the mounting disc, and the mounting piece is used for mounting the caliper on the mounting disc. The application has the effects of adapting to the mounting positions and angles of different optical fibers and facilitating stable measurement of the caliper.

Description

Technical Field

[0001] This application relates to the field of diameter gauges, and more particularly to a stabilizing bracket for diameter gauges. Background Technology

[0002] In the production of optical fibers, diameter gauges are needed to measure the diameter of the optical fibers. However, in actual use, the exit height of the optical fiber is generally higher than the height of the diameter gauge. Therefore, the diameter gauge needs to be placed on a diameter gauge bracket to achieve a suitable height for the optical fiber exit in order to facilitate the measurement of the optical fiber diameter.

[0003] The diameter measuring instrument bracket currently in use includes a base, a support rod, a connecting plate, and a placement plate fixedly connected to the connecting plate. During diameter measurement, the diameter measuring instrument is placed on the placement plate. However, when it is necessary to place the measuring instrument at different angles on the placement plate according to the test conditions, the existing diameter measuring instrument bracket cannot meet the usage requirements, causing inconvenience to the user. Utility Model Content

[0004] To accommodate different installation positions and angles of optical fibers, thereby facilitating stable measurement by the diameter measuring instrument, this application provides a stabilizing bracket for the diameter measuring instrument.

[0005] This application provides a stabilizing bracket for a diameter measuring instrument, which adopts the following technical solution: A stabilizing bracket for a diameter gauge includes a first support rod, a second support rod, a third support rod, a mounting plate, a lifting assembly, a rotating assembly, and a mounting component. The first support rod is vertically positioned and placed on the ground. The second support rod is also vertically positioned and slidably connected to the first support rod in a vertical direction. The lifting assembly is used to adjust the distance between the second support rod and the ground. One end of the third support rod is rotatably connected to the upper end of the second support rod in a horizontal direction. The rotating assembly is used to change the angle between the second and third support rods. The mounting plate is mounted on the second support rod, and the mounting component is mounted on the mounting plate for mounting the diameter gauge onto the mounting plate.

[0006] By adopting the above technical solution, the first support rod is placed vertically on the ground to provide basic support. The second support rod slides vertically to the first support rod and adjusts its distance from the ground with the lifting component, which can flexibly adapt to the fiber optic outlet height. At the same time, one end of the third support rod rotates horizontally to the upper end of the second support rod and changes its angle with the second support rod through the rotation component, which can meet the measurement needs of the diameter measuring instrument at different angles. Combined with the mounting plate and mounting parts, the diameter measuring instrument is stably installed, avoiding displacement of the diameter measuring instrument during use and ensuring the stability and accuracy of fiber optic diameter measurement.

[0007] Optionally, the lifting assembly includes a lifting screw, an anti-slip sleeve, and a limiting rod. The lifting screw is vertically arranged, with its upper end rotatably connected to a second support rod and its lower end threadedly connected to the upper end face of a first support rod. The anti-slip sleeve is disposed on the outer side wall of the lifting screw. The limiting rod is vertically arranged, parallel to the length direction of the first support rod, with its lower end disposed on the first support rod. The second support rod is slidably connected to the limiting rod.

[0008] By adopting the above technical solution, the lifting screw in the lifting assembly is set vertically, with the upper end rotatably connected to the second support rod and the lower end threadedly connected to the first support rod. Rotating the lifting screw can precisely adjust the height of the second support rod, ensuring that the diameter gauge can accurately match the fiber optic outlet height. The anti-slip sleeve on the outer wall can increase the friction between the hand and the lifting screw, preventing slippage during adjustment. The limiting rod, which is set vertically and parallel to the length direction of the first support rod, is connected to the first support rod at its lower end and the second support rod slides onto it. This can limit the sliding direction of the second support rod and prevent the second support rod from horizontally deviating or swaying during the lifting process, further improving the stability of the diameter gauge height adjustment.

[0009] Optionally, a support plate is provided at the bottom of the first support rod, the support plate is used to abut against the ground, and a plurality of triangular pieces are provided on the upper surface of the support plate. The plurality of triangular pieces are distributed circumferentially along the axis of the first support rod, and the sidewalls of the triangular pieces are provided on the sidewalls of the first support rod.

[0010] By adopting the above technical solution, the support plate at the bottom of the first support rod significantly increases the contact area between the support and the ground, reducing the risk of the support tipping over due to instability of the center of gravity and improving the overall placement stability of the support. At the same time, several triangular pieces distributed circumferentially along the axis of the first support rod on the upper surface of the support plate connect the sidewalls of the first support rod. The stability of the triangular structure enhances the connection strength between the first support rod and the support plate, preventing the connection between the first support rod and the support plate from loosening due to the weight of the support or the diameter measuring instrument after long-term use, thus extending the service life of the support.

[0011] Optionally, the rotating assembly includes a rotating gear, an incomplete gear ring, a rotating rod, a rotating disk, and a limiting member. The incomplete gear ring is coaxially arranged with the rotation axis of the third support rod. One end of the incomplete gear ring is disposed on the third support rod, and the other end of the incomplete gear ring passes through the second support rod. The second support rod is provided with a through groove extending along the axial direction of the incomplete gear ring. The rotating rod is parallel to the extension direction of the through groove and is located within the through groove. The rotating gear is disposed on the rotating rod and meshes with the incomplete gear ring. The rotating disk is disposed on the rotating rod, and the limiting member is used to restrict the rotation of the rotating gear.

[0012] By adopting the above technical solution, the incomplete gear ring in the rotating assembly is coaxial with the rotation axis of the third support rod, with one end connected to the third support rod and the other end passing through the second support rod. The through groove on the second support rod allows the rotating rod parallel to its extension direction to be placed. The rotating gear meshes with the incomplete gear ring. Rotating the rotating disk can drive the rotating rod and the rotating gear to rotate, thereby driving the incomplete gear ring and the third support rod to rotate. This enables convenient adjustment of the angle between the third support rod and the second support rod, meeting the different angle measurement needs of the diameter measuring instrument. At the same time, the limiting component can limit the rotation of the rotating gear, ensuring that the third support rod remains fixed after being adjusted to a suitable angle, and preventing the third support rod from rotating on its own during the measurement process, which would affect the measurement accuracy.

[0013] Optionally, the limiting component includes a limiting disc, a limiting spring, and a thrust ball bearing. The limiting disc is coaxially arranged with the rotating gear and is mounted on the rotating gear. The limiting disc has anti-slip grooves. The thrust ball bearing is mounted on the rotating gear. The limiting spring is coaxially arranged with the rotating rod. One end of the limiting spring is mounted on the thrust ball bearing, and the other end is mounted on the second support rod. When the limiting spring abuts against the anti-slip grooves of the limiting disc against the second support rod, the rotating gear still meshes with the incomplete gear ring.

[0014] By adopting the above technical solution, the limiting disc, which is coaxial with and connected to the rotating gear in the limiting component, has anti-slip grooves that abut against the second support rod under the action of the limiting spring. One end of the limiting spring is connected to the thrust ball bearing, and the other end is connected to the second support rod. The thrust ball bearing is connected to the rotating gear. This not only does not affect the normal rotation of the rotating gear, but also keeps the limiting disc and the second support rod stably abutted by the elastic force of the limiting spring. The friction of the anti-slip grooves restricts the rotation of the rotating gear, thereby fixing the angle of the third support rod. Moreover, this structure can still maintain the meshing state of the rotating gear and the incomplete gear ring when restricting the rotation of the rotating gear, ensuring the smoothness of subsequent angle adjustment and avoiding the situation where the rotating gear and the incomplete gear ring disengage during the angle adjustment process.

[0015] Optionally, the mounting plate includes a first mounting plate, a second mounting plate, a limiting bolt, and a handle. The first mounting plate is coaxially arranged with the third support rod and is mounted on the third support rod. The second mounting plate is coaxially arranged with the first mounting plate and is rotatably connected to the first mounting plate. The tail of the limiting bolt is threaded to the second mounting plate and abuts against the side wall of the first mounting plate. The handle is located at the head of the limiting bolt.

[0016] By adopting the above technical solution, the first mounting plate in the mounting plate is coaxial with and connected to the third support rod, and the second mounting plate is coaxial with and rotatably connected to the first mounting plate. Rotating the second mounting plate can drive the diameter measuring instrument to rotate, realizing the fine adjustment of the horizontal angle of the diameter measuring instrument and meeting the requirements of more accurate measurement angle. The tail of the limit bolt is threaded to the second mounting plate and abuts against the side wall of the first mounting plate. By tightening the limit bolt, the second mounting plate can be fixed at the required angle to prevent it from rotating on its own. The handle at the head makes it convenient for the user to rotate the limit bolt, improving the ease of operation for angle adjustment and fixing.

[0017] Optionally, the mounting component includes two mounting plates and two springs. The two mounting plates correspond to the two side walls of the diameter gauge. The mounting plates are slidably connected to the second mounting plate along the distribution direction of the two mounting plates. The two springs correspond to the two mounting plates and are used to abut against the side wall of the diameter gauge. The side wall of the diameter gauge is provided with a snap-fit ​​groove. The mounting plate is provided with a snap-fit ​​block, which is used to snap into the snap-fit ​​groove of the side wall of the diameter gauge.

[0018] By adopting the above technical solution, the two mounting plates in the mounting component correspond to the two side walls of the diameter gauge and slide along their own distribution direction to be connected to the second mounting plate. The two springs correspond to the mounting plates respectively and can push the mounting plates against the side wall of the diameter gauge to achieve clamping and fixing of diameter gauges of different widths, adapting to diameter gauges of various specifications. At the same time, the snap-fit ​​blocks on the mounting plates can snap into the snap-fit ​​grooves on the side wall of the diameter gauge, further enhancing the connection stability between the mounting plates and the diameter gauge, preventing the diameter gauge from falling off along the sliding direction of the mounting plates during use, and ensuring the stability of the diameter gauge after installation.

[0019] Optionally, the mounting plate is provided with an anti-detachment plate, which is located on the end face of the mounting plate away from the second mounting plate, and is used to abut against the bottom of the diameter measuring instrument's detection groove.

[0020] By adopting the above technical solution, the anti-detachment plate set on the end face of the mounting plate away from the second mounting plate can abut against the bottom of the diameter gauge's detection groove after the diameter gauge is installed. It limits the diameter gauge from one side of the detection groove, preventing the diameter gauge from moving or falling off in the direction away from the second mounting plate during use. In conjunction with the clamping action of the mounting plate, it forms a multi-directional fixation of the diameter gauge, further improving the stability of the diameter gauge installation and ensuring that the position of the diameter gauge does not change during the measurement process.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The height of the diameter measuring instrument can be flexibly adjusted by the first support rod, the second support rod that can slide vertically, and the lifting assembly. Combined with the horizontal rotation structure of the third support rod around the second support rod and the rotation assembly, the angle of the diameter measuring instrument can be freely changed. At the same time, the rotation design of the mounting plate can realize the fine adjustment of the horizontal angle of the diameter measuring instrument to meet the needs of different measurement angles. 2. The support plate at the bottom of the first support rod increases the grounding area, and the triangular pieces distributed around the perimeter strengthen the structure to prevent the support from tilting or loosening; the limit rod of the lifting component prevents the second support rod from shifting during lifting, and the limiting component fixes the angle of the third support rod through anti-slip texture and spring force; the spring clamp of the mounting component engages with the snap-fit ​​block, and the anti-detachment plate abuts against the diameter measuring instrument's detection slot. From the overall placement of the support and the adjustment of the components to the installation of the diameter measuring instrument, a stable structure is formed throughout the entire link to prevent the diameter measuring instrument from shifting or shaking and to ensure the accuracy of fiber diameter measurement. 3. The anti-slip sleeve of the lifting screw facilitates hand adjustment, and the handle of the limit bolt makes it easy to fix the angle of the mounting plate; the sliding mounting plate and spring design of the mounting parts can be adapted to diameter gauges of different widths, without the need to change the bracket for a specific diameter gauge; each adjustment component has a simple structure and is easy to operate, and height and angle adjustment and diameter gauge installation can be completed without complicated tools, greatly improving the ease of use. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the stabilizing support used in the diameter measuring instrument.

[0023] Figure 2 yes Figure 1 A schematic diagram of the lifting assembly.

[0024] Figure 3 yes Figure 1 A schematic diagram of the rotating assembly.

[0025] Figure 4 yes Figure 1 A schematic diagram of the installation disk.

[0026] Figure 5 yes Figure 4 A schematic diagram of the structure of the mounting component.

[0027] Reference numerals: 1. First support rod; 2. Second support rod; 21. Cavity; 22. Through groove; 3. Third support rod; 4. Mounting plate; 41. First mounting plate; 42. Second mounting plate; 43. Limiting bolt; 44. Handle; 5. Lifting assembly; 51. Lifting screw; 52. Anti-slip sleeve; 53. Limiting rod; 6. Rotating assembly; 61. Rotating gear; 62. Incomplete gear ring; 63. Rotating rod; 64. Rotating disc; 65. Limiting component; 651. Limiting disc; 652. Limiting spring; 653. Thrust ball bearing; 7. Mounting component; 71. Mounting plate; 711. Snap-fit ​​block; 72. Spring; 73. Anti-detachment plate; 8. Support plate; 81. Triangular piece; 9. Diameter gauge; 91. Snap-fit ​​groove. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail.

[0029] This application discloses a stabilizing bracket for a diameter measuring instrument. (Refer to...) Figure 1 and Figure 2 A stabilizing bracket for a diameter measuring instrument includes a first support rod 1, a second support rod 2, a third support rod 3, a mounting plate 4, a lifting assembly 5, a rotating assembly 6, and a mounting component 7. The first support rod 1 is vertically arranged, and a support plate 8 is fixedly arranged on the lower end face of the first support rod 1. The support plate 8 is horizontally arranged, and the orthographic projection area of ​​the support plate 8 is larger than the orthographic projection area of ​​the first support rod 1. The support plate 8 is used to place on the ground, and four triangular pieces 81 are arranged on the support plate 8. The four triangular pieces 81 are evenly distributed circumferentially along the axis of the first support rod 1, and the triangular pieces 81 are fixedly arranged on the side wall of the first support rod 1.

[0030] Reference Figure 1 and Figure 2 The lifting assembly 5 includes a lifting screw 51, an anti-slip sleeve 52, and a limiting rod 53. The lower end of the lifting screw 51 is threaded to the upper end face of the first support rod 1. The second support rod 2 is coaxially arranged with the lifting screw 51, and the lower end of the second support rod 2 is rotatably connected to the upper end of the lifting screw 51. The anti-slip sleeve 52 is coaxially arranged with the lifting screw 51 and is fixedly arranged on the outer side wall of the lifting screw 51. The limiting rod 53 is vertically arranged and located on one side of the first support rod 1. The lower end face of the limiting rod 53 is fixedly arranged on the first support rod 1. The second support rod 2 slides vertically and is connected to the limiting rod 53.

[0031] Reference Figure 1 and Figure 3The lower end of the third support rod 3 is rotatably connected to the upper end face of the second support rod 2 in the horizontal direction. The rotating assembly 6 includes a rotating gear 61, an incomplete gear ring 62, a rotating rod 63, a rotating disk 64, and a limiting member 65. The incomplete gear ring 62 is coaxially arranged with the rotation axis of the third support rod 3. One end of the incomplete gear ring 62 is fixedly mounted on the third support rod 3. A cavity 21 is opened on the second support rod 2. The other end of the incomplete gear ring 62 passes through the cavity 21 and exits through the side wall of the second support rod 2. The two support rods 2 have through grooves 22 extending along the axis of the incomplete gear ring 62 and communicating with the cavity 21. A rotating rod 63 is parallel to the extension direction of the through grooves 22 and is located within the through grooves 22. A rotating gear 61 is located within the cavity 21 and is coaxially arranged with the rotating rod 63. The rotating gear 61 is fixedly mounted on one end of the rotating rod 63 and meshes with the incomplete gear ring 62. A rotating disk 64 is coaxially arranged with the rotating rod 63. A rotating disk 64 is fixedly mounted on the other end of a rotating rod 63. A limiting component 65 includes a limiting disk 651, a limiting spring 652, and a thrust ball bearing 653. The limiting disk 651 is coaxially mounted with the rotating gear 61 and is fixedly mounted on the end face of the rotating gear 61 facing away from the rotating rod 63. Anti-slip textures are provided on the limiting disk 651. The thrust ball bearing 653 is coaxially mounted with the rotating gear 61, and one end of the thrust ball bearing 653 is fixedly mounted on the rotating gear 61. The limiting spring 652 is coaxially arranged with the thrust ball bearing 653. One end of the limiting spring 652 is fixedly arranged on the thrust ball bearing 653, and the other end of the limiting spring 652 is fixedly arranged on the inner wall of the cavity 21. The limiting spring 652 is used to drive the rotating gear 61 to move and make the anti-slip texture of the limiting disc 651 abut against the inner wall of the cavity 21. When the anti-slip texture of the limiting disc 651 abuts against the inner wall of the cavity 21, the rotating gear 61 and the incomplete gear ring 62 still remain in a meshing state.

[0032] Reference Figure 1 and Figure 4 The mounting plate 4 includes a first mounting plate 41, a second mounting plate 42, a limiting bolt 43, and a handle 44. The first mounting plate 41 is fixedly mounted on the upper end face of the third support rod 3. The second mounting plate 42 is coaxially mounted with the first mounting plate 41 and is rotatably connected to the first mounting plate 41. The limiting bolt 43 is parallel to the radial direction of the first mounting plate 41. The tail of the limiting bolt 43 is threaded to the second mounting plate 42 and abuts against the side wall of the first mounting plate 41. The handle 44 is fixedly mounted on the head of the limiting bolt 43.

[0033] Reference Figure 4 and Figure 5Mounting component 7 is mounted on the second mounting plate 42. Mounting component 7 includes two mounting plates 71 and two springs 72. The two mounting plates 71 are distributed along the thickness direction of the diameter gauge 9. The mounting plates 71 are slidably connected to the second mounting plate 42 along the distribution direction of the two mounting plates 71. Two snap-fit ​​grooves 91 are respectively opened on the side wall of the diameter gauge 9 along the thickness direction. A snap-fit ​​block 711 is provided on the side of the mounting plate 71 facing the diameter gauge 9. The two springs 72 correspond to the two mounting plates 71. The length direction of the springs 72 is parallel to the sliding direction of the mounting plates 71. One end of the spring 72 is fixedly mounted on the mounting plate 71, and the other end of the spring 72 is fixedly mounted on the second mounting plate 42. The springs 72 are used to keep the snap-fit ​​block 711 snapped into the snap-fit ​​groove 91 of the diameter gauge 9. An anti-detachment plate 73 is provided on the upper end surface of the mounting plate 71. The anti-detachment plate 73 and the mounting plate 71 are inverted L-shaped. The lower end surface of the anti-detachment plate 73 abuts against the bottom of the detection groove of the diameter gauge 9.

[0034] The implementation principle of a stabilizing bracket for a diameter measuring instrument according to an embodiment of this application is as follows: The first support rod 1 serves as the basic support structure of the bracket, which is placed vertically on the ground to provide initial support for the entire bracket. When it is necessary to adapt to the height of the fiber optic outlet, the distance between the second support rod 2 and the ground is adjusted by the lifting assembly 5. The lifting screw 51 in the lifting assembly 5 is set vertically, with its upper end rotatably connected to the second support rod 2 and its lower end threadedly connected to the upper end face of the first support rod 1. Rotating the lifting screw 51 can drive the second support rod 2 to slide in the vertical direction. At the same time, the limiting rod 53 is parallel to the length direction of the first support rod 1 and its lower end is set on the first support rod 1, which can limit the sliding direction of the second support rod 2 and prevent the second support rod 2 from deviating when it is raised or lowered. The anti-slip sleeve 52 increases the friction of the hand when rotating the lifting screw 51 to prevent slippage and ensure accurate and stable height adjustment.

[0035] When it is necessary to change the measuring angle of the diameter gauge 9, the angle between the second support rod 2 and the third support rod 3 is adjusted by using the rotating assembly 6. One end of the third support rod 3 is rotatably connected to the upper end of the second support rod 2 in the horizontal direction. The incomplete gear ring 62 in the rotating assembly 6 is coaxial with the rotation axis of the third support rod 3, with one end located on the third support rod 3 and the other end passing through the second support rod 2. The through groove 22 on the second support rod 2 is for placing the rotating rod 63 parallel to its extension direction. The gear on the rotating rod 63 meshes with the incomplete gear ring 62. Rotating the rotating disk 64 can drive the rotating rod 63 and the gear to rotate, thereby driving the incomplete gear ring 62 and the third support rod 3 to rotate. After adjusting to a suitable angle, the rotation of the gear is restricted by the limiting member 65 to keep the third support rod 3 at a fixed angle and avoid angle deviation during the measurement process.

[0036] The diameter measuring instrument 9 is installed using the mounting plate 4 and the mounting component 7. The mounting plate 4 is located on the second support rod 2, and the mounting component 7 is located on the mounting plate 4. The mounting component 7 can stably install the diameter measuring instrument 9 on the mounting plate 4, ensuring that the diameter measuring instrument 9 remains stable during height and angle adjustment and measurement, thus ensuring the accuracy of fiber diameter measurement.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stabilizing bracket for a diameter measuring instrument, characterized in that: The device includes a first support rod (1), a second support rod (2), a third support rod (3), a mounting plate (4), a lifting assembly (5), a rotating assembly (6), and a mounting component (7). The first support rod (1) is vertically positioned and placed on the ground. The second support rod (2) is vertically positioned and slides vertically connected to the first support rod (1). The lifting assembly (5) is used to adjust the distance between the second support rod (2) and the ground. One end of the third support rod (3) is rotatably connected to the upper end of the second support rod (2) in the horizontal direction. The rotating assembly (6) is used to change the angle between the second support rod (2) and the third support rod (3). The mounting plate (4) is positioned on the second support rod (2). The mounting component (7) is positioned on the mounting plate (4) and is used to install the diameter gauge (9) onto the mounting plate (4). The rotating assembly (6) includes a rotating... The assembly includes a gear (61), an incomplete gear ring (62), a rotating rod (63), a rotating disk (64), and a limiting member (65). The incomplete gear ring (62) is coaxially arranged with the rotation axis of the third support rod (3). One end of the incomplete gear ring (62) is located on the third support rod (3), and the other end of the incomplete gear ring (62) passes through the second support rod (2). The second support rod (2) is provided with a through groove (22), which extends along the axial direction of the incomplete gear ring (62). The rotating rod (63) is parallel to the extension direction of the through groove (22) and is located in the through groove (22). The rotating gear (61) is located on the rotating rod (63) and meshes with the incomplete gear ring (62). The rotating disk (64) is located on the rotating rod (63), and the limiting member (65) is used to limit the rotation of the rotating gear (61).

2. A stabilizing bracket for a diameter measuring instrument according to claim 1, characterized in that: The lifting assembly (5) includes a lifting screw (51), an anti-slip sleeve (52), and a limiting rod (53). The lifting screw (51) is vertically arranged, and the upper end of the lifting screw (51) is rotatably connected to the second support rod (2). The lower end of the lifting screw (51) is threadedly connected to the upper end face of the first support rod (1). The anti-slip sleeve (52) is arranged on the outer side wall of the lifting screw (51). The limiting rod (53) is vertically arranged, and the limiting rod (53) is parallel to the length direction of the first support rod (1). The lower end of the limiting rod (53) is arranged on the first support rod (1). The second support rod (2) is slidably connected to the limiting rod (53).

3. A stabilizing bracket for a diameter measuring instrument according to claim 1, characterized in that: The first support rod (1) is provided with a support plate (8) at its bottom. The support plate (8) is used to abut against the ground. The upper surface of the support plate (8) is provided with a number of triangular pieces (81). The number of triangular pieces (81) are distributed circumferentially along the axis of the first support rod (1). The sidewalls of the triangular pieces (81) are provided on the sidewalls of the first support rod (1).

4. A stabilizing bracket for a diameter measuring instrument according to claim 1, characterized in that: The limiting component (65) includes a limiting disc (651), a limiting spring (652), and a thrust ball bearing (653). The limiting disc (651) is coaxially arranged with the rotating gear (61) and is located on the rotating gear (61). The limiting disc (651) has anti-slip textures. The thrust ball bearing (653) is located on the rotating gear (61). The limiting spring (652) is coaxially arranged with the rotating rod (63). One end of the limiting spring (652) is located on the thrust ball bearing (653), and the other end of the limiting spring (652) is located on the second support rod (2). When the limiting spring (652) is used to limit the anti-slip texture of the limiting disc (651) to abut against the second support rod (2), the rotating gear (61) still meshes with the incomplete gear ring (62).

5. A stabilizing bracket for a diameter measuring instrument according to claim 1, characterized in that: The mounting plate (4) includes a first mounting plate (41), a second mounting plate (42), a limiting bolt (43), and a handle (44). The first mounting plate (41) is coaxially arranged with the third support rod (3) and is mounted on the third support rod (3). The second mounting plate (42) is coaxially arranged with the first mounting plate (41) and is rotatably connected to the first mounting plate (41). The tail of the limiting bolt (43) is threaded to the second mounting plate (42) and abuts against the side wall of the first mounting plate (41). The handle (44) is located at the head of the limiting bolt (43).

6. A stabilizing bracket for a diameter measuring instrument according to claim 5, characterized in that: The mounting component (7) includes two mounting plates (71) and two springs (72). The two mounting plates (71) correspond to the two side walls of the diameter gauge (9). The mounting plates (71) are slidably connected to the second mounting plate (42) along the distribution direction of the two mounting plates (71). The two springs (72) correspond to the two mounting plates (71). The springs (72) are used to abut against the side wall of the diameter gauge (9) corresponding to the mounting plates (71). The side wall of the diameter gauge (9) is provided with a snap-fit ​​groove (91). The mounting plate (71) is provided with a snap-fit ​​block (711). The snap-fit ​​block (711) is used to snap into the snap-fit ​​groove (91) of the side wall of the diameter gauge (9).

7. A stabilizing bracket for a diameter measuring instrument according to claim 6, characterized in that: An anti-detachment plate (73) is provided on the mounting plate (71). The anti-detachment plate (73) is located on the end face of the mounting plate (71) away from the second mounting plate (42). The anti-detachment plate (73) is used to abut against the bottom of the detection groove of the diameter measuring instrument (9).

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