Detection tool for detecting radian of segment bolt

Abstract

The utility model discloses a testing fixture for detecting the radian of a segment bolt, which comprises a base, one end of the top surface of the base is fixedly connected with a fixed plate, the other end of the top surface of the base is slidably connected with a movable plate, one end of the fixed plate close to the movable plate is provided with a first arc-shaped surface, and one end of the movable plate close to the fixed plate is provided with a second arc-shaped surface. The first arc-shaped surface and the second arc-shaped surface have the same radian, and an arc-shaped detection groove is formed among the first arc-shaped surface, the second arc-shaped surface and the top surface of the base; the end, away from the fixed plate, of the movable plate is connected with a driving assembly, and the driving assembly is used for driving the movable plate to be close to or away from the fixed plate. The distance between the movable plate and the fixed plate is adjusted through the driving assembly, so that the arc-shaped detection groove can be suitable for detecting radians of segment bolts with different diameters, the structure is simple, the use is convenient, and the detection efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of segment bolt detection, in particular to a fixture for detecting the radian of segment bolts. Background Technique

[0002] In tunnel construction, a shield machine assembles several segments to form a tunnel lining. Segment bolts, as connecting fasteners, combine the segments together to form a pipeline. This design not only effectively controls ground settlement and reduces the impact on ground buildings but also ensures that water surface traffic is not affected during underwater excavation. Segment bolts play an irreplaceable role in tunnel construction. During the production and use of segment bolts, the radian of the bolt rod needs to meet the requirements of shield segment assembly. If the radian of the bolt rod is unqualified, it is a defective product and cannot be put into use. Therefore, after the segment bolts are processed, a fixture is needed to detect the radian of the segment bolts and screen out unqualified defective products.

[0003] The existing fixtures for detecting the radian of segment bolts usually place the segment bolts to be detected into a radian inspection groove that matches the designed radian of the segment bolts, and observe whether they can be easily inserted and removed. If the segment bolts can be easily inserted and removed, it indicates that their radian is qualified; otherwise, it indicates that their radian does not meet the design requirements and is an unqualified defective product. However, due to the fixed size of the radian inspection groove, it cannot be applied to the detection of segment bolts with different diameters. The utility model patent with the application number 202122691461.6 discloses a segment bolt detection tooling, which includes a bracket, a clamping mechanism, and a detection mechanism. The bracket includes a base and a vertical plate fixed on the base. The detection mechanism includes a movable frame, a scale plate, a fitting block, and a pointer. The movable frame is connected to the upper part of the vertical plate, the scale plate is connected to the movable frame, the fitting block is connected to the lower end of the movable frame through a connecting component, and the pointer is used to indicate the scale on the scale plate. The connecting component includes a hinge block, a first slider, a connecting rod, and a return spring. The hinge block is fixed on the fitting block, the lower end of the movable frame is hinged to the hinge block, the first slider is horizontally slidably connected to the top of the fitting block, one end of the connecting rod is hinged to the movable frame, and the other end is hinged to the first slider. The return spring is connected to the hinge block at one end and the first slider at the other end. If the deflection angle of the pointer is too large, it indicates that the radian of the bolt rod does not meet the requirements.

[0004] Although the above patent can detect the radian of segment bolts with different rod diameters, when using the detection tooling of this patent, it is necessary to first use the clamping mechanism to clamp and fix the head of the segment bolt, and then use the detection mechanism to detect the rod of the segment bolt. In the actual use process, the detection cycle of a single bolt is relatively long, reducing the detection efficiency of segment bolts, and the detection tooling has a complex structure, with high production and maintenance costs.

[0005] Therefore, it is necessary to develop a jig for detecting the arc of segment bolts to address the above-mentioned deficiencies. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a jig for detecting the arc of segment bolts, which can be applicable to the detection of the arcs of segment bolts with different diameters, and at the same time has a simple structure, is easy to use, and can improve the detection efficiency.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions:

[0008] A jig for detecting the arc of segment bolts of the present utility model includes a base. One end of the top surface of the base is fixedly connected with a fixed plate, and the other end is slidably connected with a movable plate. One end of the fixed plate close to the movable plate is provided with a first arc surface, and one end of the movable plate close to the fixed plate is provided with a second arc surface. The first arc surface and the second arc surface have the same arc. The first arc surface, the second arc surface and the top surface of the base form an arc detection groove, and the arc detection groove (13) is used to detect the arc of the segment bolt to be detected; one end of the movable plate far from the fixed plate is connected with a driving component, and the driving component is used to drive the movable plate to approach or move away from the fixed plate.

[0009] Further, the driving component includes a lead screw. A first chute is opened at one end of the top surface of the base far from the fixed plate. Both ends of the lead screw are rotatably connected to the inner wall of the first chute. A slider is threadedly sleeved on the lead screw, and the top surface of the slider is fixedly connected to the bottom surface of the movable plate; one end of the lead screw penetrates through the inner wall of the first chute.

[0010] Further, a hand wheel is fixedly connected to the end of the lead screw penetrating through the inner wall of the first chute.

[0011] Further, second chutes parallel to the first chute are opened on the top surface of the base on both sides of the first chute, and both sides of the bottom surface of the movable plate are slidably connected to the second chutes.

[0012] Further, a baffle is fixedly connected to one side wall of the base. There is a gap between the side surface of the baffle and the side surface of the movable plate. A scale line is provided at the top of the side wall of the baffle close to the movable plate, and the starting position of the scale line is aligned with the end of the first arc surface.

[0013] Further, the fixed plate and the base are integrally formed, and the fixed plate and the movable plate have the same thickness.

[0014] Compared with the prior art, the beneficial technical effects of the present utility model:

[0015] The utility model forms an arc-shaped detection groove by splicing the first arc surface on the fixed plate and the second arc surface on the moving plate. The segment bolt to be detected can be placed in the arc-shaped detection groove to detect whether its radian is qualified. Through the drive of the drive assembly, the moving plate moves towards or away from the fixed plate, changing the distance between the moving plate and the fixed plate, so as to adjust the width of the arc-shaped detection groove according to the diameter size of the segment bolt, improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below in conjunction with the drawings.

[0017] Figure 1 FIG. is a three-dimensional structural schematic diagram of the jig for detecting the radian of the segment bolt and the segment bolt of the present utility model;

[0018] Figure 2 FIG. is a three-dimensional structural schematic diagram of the jig for detecting the radian of the segment bolt of the present utility model;

[0019] Figure 3 FIG. is a three-dimensional structural schematic diagram of the base and the fixed plate of the present utility model.

[0020] Description of the reference numerals: 1. Base; 2. Fixed plate; 3. Moving plate; 4. First arc surface; 5. Second arc surface; 6. Lead screw; 7. First chute; 8. Slide block; 9. Hand wheel; 10. Second chute; 11. Baffle; 12. Scale line; 13. Arc-shaped detection groove; 14. Segment bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The core of the present utility model is to provide a jig for detecting the radian of the segment bolt, which can be applicable to the detection of the radian of segment bolts with different diameters, and at the same time has a simple structure, is easy to use, and can improve the detection efficiency.

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] In a specific embodiment, as Figures 1 to 3 shown, it includes a base 1. One end of the top surface of the base 1 is fixedly connected to a fixing plate 2, and the other end is slidably connected to a moving plate 3. One end of the fixing plate 2 close to the moving plate 3 is provided with a first arc surface 4, and one end of the moving plate 3 close to the fixing plate 2 is provided with a second arc surface 5. The first arc surface 4, the first arc surface 4 and the second arc surface 5 have the same radian. The first arc surface 4, the second arc surface 5 and the top surface of the base 1 form an arc detection groove 13, and the arc detection groove 13 is used to detect the radian of the segment bolt 14 to be detected; the end of the moving plate 3 away from the fixing plate 2 is connected with a driving component, and the driving component is used to drive the moving plate 3 to approach or move away from the fixing plate 2.

[0025] It should be noted that the first arc surface 4 is recessed towards the other end of the fixing plate 2, and the second arc surface 5 protrudes outwards. In other embodiments, the first arc surface 4 can protrude outwards, and the second arc surface 5 can be recessed towards the other end of the moving plate 3, as long as it can ensure that an arc detection groove 13 for detecting the radian of the segment bolt 14 can be formed between the first arc surface 4, the second arc surface 5 and the top surface of the base 1. The first arc surface 4 and the second arc surface 5 have the same radian as the segment bolt 14 to be detected.

[0026] An arc detection groove 13 is formed between the splicing of the first arc surface 4 on the fixing plate 2 and the second arc surface 5 on the moving plate 3 and the bottom surface of the base 1. The segment bolt 14 to be detected is placed in the arc detection groove 13 to detect whether its radian is qualified. Through the driving of the driving component, the moving plate 3 is driven to move towards or away from the fixing plate 2, changing the distance between the moving plate 3 and the fixing plate 2, so as to adjust the width of the arc detection groove 13 according to the diameter size of the segment bolt 14, improving the applicability of the device.

[0027] In a specific embodiment, the driving component includes a lead screw 6. A first chute 7 is opened at one end of the top surface of the base 1 away from the fixing plate 2. Both ends of the lead screw 6 are rotatably connected to the inner wall of the first chute 7. A slider 8 is threadedly sleeved on the lead screw 6, and the top surface of the slider 8 is fixedly connected to the bottom surface of the moving plate 3; one end of the lead screw 6 penetrates through the inner wall of the first chute 7.

[0028] By rotating the lead screw 6 forward and backward, the slider 8 can be driven to slide linearly in the first chute 7, further driving the moving plate 3 fixedly connected to the slider 8 to slide on the top surface of the base 1, so that the moving plate 3 approaches or moves away from the fixing plate 2, thereby achieving the purpose of adjusting the width of the arc detection groove 13.

[0029] Specifically, one end of the lead screw 6 penetrating through the inner wall of the first chute 7 is fixedly connected with a hand wheel 9, which is convenient for the staff to rotate the lead screw 6 through the hand wheel 9.

[0030] Specifically, on the top surface of the base 1 on both sides of the first chute 7, second chutes 10 parallel to it are provided, and both sides of the bottom surface of the moving plate 3 are slidably connected to the second chutes 10.

[0031] In a specific embodiment, a baffle 11 is fixedly connected to the side wall of one end of the base 1. There is a gap between the side surface of the baffle 11 and the side surface of the moving plate 3. At the top of the side wall of the baffle 11 near the moving plate 3, scale lines 12 are engraved. The starting position of the scale lines 12 is aligned with the end of the first arc surface 4.

[0032] Through the scale lines 12, the width of the arc detection groove 13 between the first arc surface 4 and the second arc surface 5 can be seen more intuitively, so as to facilitate accurately adjusting the width of the arc detection groove 13 according to the segment bolts 14 with different diameters, and improving the detection accuracy of the inspection tool.

[0033] In a specific embodiment, the fixing plate 2 and the base 1 are integrally formed, and the fixing plate 2 and the moving plate 3 have the same thickness.

[0034] The working principle of the present utility model: First, measure the diameter size of the rod part of the arc-shaped segment bolt 14 to be detected. Manually rotate the handwheel 9 to drive the lead screw 6 to rotate, drive the slider 8 to linearly move along the first chute 7, so as to drive the moving plate 3 to slide on the base 1 closer to or away from the fixing plate 2. According to observing the scale lines 12, move the moving plate 3 to a suitable position so that the width of the arc detection groove 13 is slightly larger than the diameter size of the rod part of the segment bolt 14. Then put the segment bolt 14 to be detected into the arc detection groove 13 and observe whether it can be easily put in and taken out. If the segment bolt 14 can be easily put in and taken out, it means that its radian is qualified; otherwise, it means that its radian does not meet the design requirements and it is a substandard inferior product.

[0035] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0036] The above-described embodiments are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. A checking fixture for detecting the curvature of segment bolts, characterized in that: The invention comprises a base (1), wherein one end of the top surface of the base (1) is fixedly connected to a fixed plate (2), and the other end is slidably connected to a movable plate (3), wherein the end of the fixed plate (2) close to the movable plate (3) is provided with a first curved surface (4), and the end of the movable plate (3) close to the fixed plate (2) is provided with a second curved surface (5), the first curved surface (4) and the second curved surface (5) have the same curvature, and an arc-shaped detection groove (13) is formed between the first curved surface (4), the second curved surface (5) and the top surface of the base (1), and the arc-shaped detection groove (13) is used to detect the curvature of a segment bolt (14) to be inspected; and the end of the movable plate (3) away from the fixed plate (2) is connected to a driving assembly, and the driving assembly is used to drive the movable plate (3) to approach or move away from the fixed plate (2).

2. The inspection tool for detecting the curvature of segment bolts according to claim 1 is characterized in that: The driving assembly comprises a lead screw (6), a first slide groove (7) is provided on the top surface of the base (1) at one end away from the fixed plate (2), both ends of the lead screw (6) are rotatably connected to the inner wall of the first slide groove (7), a slider (8) is threadedly sleeved on the lead screw (6), and the top surface of the slider (8) is fixedly connected to the bottom surface of the movable plate (3); one end of the lead screw (6) passes through the inner wall of the first slide groove (7).

3. The inspection tool for detecting the curvature of segment bolts according to claim 2 is characterized in that: One end of the lead screw (6) passing through the inner wall of the first sliding groove (7) is fixedly connected to a hand wheel (9).

4. The inspection tool for detecting the curvature of segment bolts according to claim 2 is characterized in that: Second sliding grooves (10) parallel to the first sliding groove (7) are provided on the top surface of the base (1) on both sides, and the bottom surface of the movable plate (3) is slidably connected to the second sliding grooves (10) on both sides.

5. The inspection tool for inspecting the curvature of segment bolts according to claim 1 is characterized in that: A baffle (11) is fixedly connected to a side wall at one end of the base (1), a gap is provided between the side of the baffle (11) and the side of the movable plate (3), a scale line (12) is provided at the top of the side wall at one end of the baffle (11) close to the movable plate (3), and a starting position of the scale line (12) is aligned with the end of the first arc-shaped surface (4).

6. The inspection tool for detecting the curvature of segment bolts according to claim 1 is characterized in that: The fixed plate (2) and the base (1) are integrally formed, and the fixed plate (2) and the movable plate (3) have the same thickness.

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