A wire tube threading limiting device
By designing a threading limiting device for conduits, the threading length can be precisely adjusted using a limiting mechanism and a stop structure, thus solving the problems of low threading accuracy and low efficiency in existing technologies and achieving high-precision and high-efficiency threading operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HAIDA COMMUNICATION CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-29
Smart Images

Figure CN224294886U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building pipeline construction technology, specifically a conduit threading limiting device. Background Technology
[0002] Threading (i.e. thread cutting) is a common process in construction and machinery manufacturing. It is mainly used to cut threads on metal pipes or cylindrical workpieces so that pipes and fittings can be fastened together through threaded connections.
[0003] In existing threading operations, workers typically control the threading length by visual inspection or manual positioning. However, manual threading has low precision, which can easily lead to mismatched threads when connecting pipes. Manual operation is inefficient, batch processing has poor consistency, and it mainly relies on the operator's experience, making it easy for novices to make mistakes. To address these issues, we propose a conduit threading limit device. Utility Model Content
[0004] In view of the shortcomings of the prior art, this utility model provides a wire threading limiting device, which solves the problems mentioned in the background.
[0005] This utility model provides the following technical solution: a wire conduit threading limiting device, comprising: a limiting mechanism, the limiting mechanism including a base and a clamping plate, a guide post fixedly installed on the upper surface of the base, the clamping plate slidably connected to the guide post, and a bolt threadedly connected to the clamping plate, the bolt also being threadedly connected to the base, a length gauge plate slidably connected to the base, and a receiving groove for accommodating the end of the length gauge plate being provided on the base; a stop structure is also provided on the base, the stop structure including an auxiliary rack fixedly installed on the side of the length gauge plate, an auxiliary gear rotatably disposed inside the base, and a stop structure disposed on the side of the length gauge plate. The base has a V-shaped seat on its side, where the auxiliary gear meshes with the auxiliary rack. A T-shaped protrusion for sliding connection with the base is fixedly installed on the side of the V-shaped seat. A screw is also threaded onto the V-shaped seat, which can also be threaded onto the base. An arc-shaped guide rail is fixedly installed on the side of the V-shaped seat away from the base. A main rod and a secondary rod are slidably arranged inside the arc-shaped guide rail. A magnetic stop block is magnetically connected to the upper end of the main rod, and the magnetic stop block is also magnetically connected to the arc-shaped guide rail. A meshing block is fixedly installed at the lower end of the main rod, and the meshing block can mesh with the portion of the auxiliary gear that protrudes from the base.
[0006] Preferably, the sidewall of the inner cavity of the base is provided with a square protrusion, the length plate is provided with a groove for cooperating with the square protrusion, and the outer surface of the length plate is provided with a scale.
[0007] Preferably, a gear shaft is fixedly mounted on the central part of the auxiliary gear, and the auxiliary gear is rotatably connected to the base through the gear shaft.
[0008] Preferably, the arc-shaped guide rail is composed of four arc-shaped plates, and the axis of the arc-shaped plates coincides with the axis of the auxiliary gear.
[0009] Preferably, the arc-shaped guide rail forms a central arc-shaped groove and a boundary arc-shaped groove through the four arc-shaped plates, the main rod is located inside the central arc-shaped groove, and the secondary rod is located inside the boundary arc-shaped groove.
[0010] Preferably, an anti-detachment block is fixedly installed at the upper end of the main rod passing through the arc-shaped guide rail, and the width of the anti-detachment block is greater than the width of the central arc-shaped groove.
[0011] Preferably, the bottom surface of the magnetic stop block adjacent to the main rod has an opening for accommodating the anti-detachment block.
[0012] Preferably, there are two auxiliary rods, which are symmetrically arranged on both sides of the axis of the main rod.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. This conduit threading limiting device, by setting a limiting mechanism, uses a base and clamping plate in conjunction with bolts to clamp it on the outer surface of the conduit, thereby limiting the range of motion of the die wrench to control the threading length. Furthermore, the scale plate is slidably connected to the base, so the distance between the base and the conduit port can be precisely adjusted using the scale plate, thus ensuring the accuracy of the threading length.
[0015] 2. The threading limiting device of this conduit has a stop structure on the base to lock the state of the guide plate. In conjunction with the receiving groove on the base to accommodate the end of the guide plate, it ensures the flatness of the side of the base and prevents the guide plate from protruding and affecting the use of the die wrench, thus further ensuring the performance of the overall structure. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the base and clamping plate structure of this utility model;
[0018] Figure 3 This is a cross-sectional view of the base of this utility model;
[0019] Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle;
[0020] Figure 5 This is an exploded view of the V-shaped seat structure of this utility model;
[0021] Figure 6This is an exploded view of the stop block structure of this utility model.
[0022] In the diagram: 1. Limiting mechanism; 11. Base; 12. Clamping plate; 13. Guide post; 14. Bolt; 15. Length plate; 16. Receiving groove; 2. Stopping structure; 21. Auxiliary rack; 22. Auxiliary gear; 221. Gear shaft; 23. Meshing block; 24. Main rod; 25. Magnetic stop; 26. Arc-shaped guide rail; 27. V-shaped seat; 28. Screw; 29. T-shaped protrusion; 210. Secondary rod. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-6 A wire threading limiting device includes: a limiting mechanism 1, which includes a base 11 and a clamping plate 12. A guide post 13 is fixedly installed on the upper surface of the base 11. The clamping plate 12 is slidably connected to the guide post 13, and a bolt 14 is threadedly connected to the clamping plate 12. The bolt 14 is also threadedly connected to the base 11. A length gauge plate 15 is slidably connected to the base 11, and a receiving groove 16 for accommodating the end of the length gauge plate 15 is also provided on the base 11. A square protrusion is provided on the side wall of the inner cavity of the base 11, and a groove for cooperating with the square protrusion is provided on the length gauge plate 15. The outer surface of the length gauge plate 15 is provided with a scale to facilitate the user to adjust the threading length.
[0025] The base 11 is also provided with a stop structure 2, which includes an auxiliary rack 21 fixedly installed on the side of the length plate 15, an auxiliary gear 22 rotatably installed inside the base 11, a gear shaft 221 fixedly installed on the center part of the auxiliary gear 22, and the auxiliary gear 22 being rotatably connected to the base 11 through the gear shaft 221, and a V-shaped seat 27 provided on the side of the base 11, the auxiliary gear 22 being meshed with the auxiliary rack 21, and a side of the V-shaped seat 27 being fixedly installed for sliding connection with the base 11. The T-shaped protrusion 29 and the V-shaped seat 27 are threadedly connected to a screw 28, which can also be threadedly connected to the base 11. An arc-shaped guide rail 26 is fixedly installed on the side of the V-shaped seat 27 away from the base 11. A main rod 24 and a secondary rod 210 are slidably arranged inside the arc-shaped guide rail 26. The arc-shaped guide rail 26 is composed of four arc-shaped plates, and the axis of the arc-shaped plates coincides with the axis of the auxiliary gear 22. The arc-shaped guide rail 26 forms a central arc-shaped groove and a boundary arc-shaped groove through the four arc-shaped plates. The main rod 24 is located in the central arc-shaped groove. Inside the central arc-shaped groove, the auxiliary rod 210 is located inside the boundary arc-shaped groove. Therefore, after the main rod 24 slides with the arc-shaped guide rail 26, the orientation of the meshing teeth on the meshing block 23 can be adjusted to ensure that it can mesh with the auxiliary gear 22, so as to conform to the change in the orientation of the meshing teeth after the auxiliary gear 22 rotates. The upper end of the main rod 24 is magnetically connected to a magnetic stop 25, which is also magnetically connected to the arc-shaped guide rail 26. An anti-detachment block is fixedly installed on the upper end of the main rod 24 through the arc-shaped guide rail 26, and the width of the anti-detachment block is greater than that of the central arc-shaped groove. The width of the arc-shaped groove, the bottom surface of the magnetic stop 25 adjacent to the main rod 24 is provided with an opening for accommodating the anti-detachment block, so that the bottom surface of the magnetic stop 25 can be in close contact with the main rod 24 and the arc-shaped guide rail 26, thereby using the magnetic of the magnetic stop 25 itself to lock the overall structure. The lower end of the main rod 24 is fixedly installed with a meshing block 23, which can mesh with the part of the auxiliary gear 22 protruding from the base 11. There are two auxiliary rods 210, which are symmetrically arranged on both sides of the axis of the main rod 24.
[0026] Working principle: The conduit is placed between the base 11 and the clamping plate 12. A length plate 15, slidably connected to the base 11 and marked with graduations, is used to adjust the distance between the base 11 and the conduit port. Then, the clamping plate 12 is tightened using bolts 14 to firmly clamp and fix the conduit onto the base 11. The length plate 15 is pushed so that its end slides into the receiving groove 16 of the base 11. Then, the V-shaped seat 27, slidably connected to the base 11 via a T-shaped protrusion 29, is pushed downwards. At this time, the main rod 24 and magnetic stop 25 are slidably positioned on the arc-shaped guide rail 26 fixed on the V-shaped seat 27. Simultaneously, the meshing block 23 at the lower end of the main rod 24 slides downwards. By tightening the screw 28, the V-shaped seat 27 is fixed to the base 11. At this time, the meshing block 23 engages with the part of the auxiliary gear 22 protruding from the base 11, while the magnetic stop 25 engages with the main rod 24 and the arc-shaped guide rail 26. The guide rail 26 is magnetically connected, and the main rod 24 is also fixed with the auxiliary rod 210. The auxiliary rod 210 is also located inside the arc-shaped guide rail 26. Therefore, the meshing block 23, the main rod 24, the magnetic stop block 25 and the auxiliary rod 210 can only slide along the arc-shaped guide rail 26 and are in a non-rotating state. When the meshing block 23 meshes with the auxiliary gear 22, the magnetic stop block 25 is also connected to the ends of the main rod 24 and the auxiliary rod 210 by its magnetism. The magnetic stop block 25 is also magnetically connected to the arc-shaped guide rail 26, thereby restricting the sliding of the main rod 24 and the meshing block 23 on the arc-shaped guide rail 26, which can restrict the rotation of the auxiliary gear 22. Similarly, when the auxiliary gear 22 cannot rotate, the auxiliary rack 21 fixed on the side of the length plate 15 will be in a non-sliding state, thereby restricting the sliding of the length plate 15 and preventing the length plate 15 from protruding and affecting the normal operation of the die when the die wrench is threaded.
[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A wire conduit threading limiting device, characterized in that, include: The limiting mechanism (1) includes a base (11) and a clamping plate (12). A guide post (13) is fixedly installed on the upper surface of the base (11). The clamping plate (12) is slidably connected to the guide post (13), and a bolt (14) is threadedly connected to the clamping plate (12). The bolt (14) is also threadedly connected to the base (11). A length plate (15) is slidably connected to the base (11), and a receiving groove (16) for accommodating the end of the length plate (15) is also provided on the base (11). The base (11) is also provided with a stop structure (2), which includes an auxiliary rack (21) fixedly installed on the side of the length plate (15), an auxiliary gear (22) rotatably installed inside the base (11), and a V-shaped seat (27) provided on the side of the base (11). The auxiliary gear (22) meshes with the auxiliary rack (21). The side of the V-shaped seat (27) is fixedly installed with a T-shaped protrusion (29) for sliding connection with the base (11). A screw (28) is also threadedly connected to the V-shaped seat (27). (28) It can also be threadedly connected to the base (11). The side of the V-shaped seat (27) away from the base (11) is fixedly installed with an arc-shaped guide rail (26). The arc-shaped guide rail (26) has a main rod (24) and a secondary rod (210) slidably arranged inside. The upper end of the main rod (24) is magnetically connected to a magnetic stop block (25). The magnetic stop block (25) is also magnetically connected to the arc-shaped guide rail (26). The lower end of the main rod (24) is fixedly installed with a meshing block (23). The meshing block (23) can mesh with the part of the auxiliary gear (22) that protrudes from the base (11).
2. The conduit threading limiting device according to claim 1, characterized in that, The inner wall of the base (11) is provided with a square protrusion, the length plate (15) is provided with a groove for cooperating with the square protrusion, and the outer surface of the length plate (15) is provided with a scale.
3. The conduit threading limiting device according to claim 1, characterized in that, The auxiliary gear (22) has a gear shaft (221) fixedly installed in the center part, and the auxiliary gear (22) is rotatably connected to the base (11) through the gear shaft (221).
4. The conduit threading limiting device according to claim 1, characterized in that, The arc-shaped guide rail (26) is composed of four arc-shaped plates, and the axis of the arc-shaped plate coincides with the axis of the auxiliary gear (22).
5. The conduit threading limiting device according to claim 4, characterized in that, The arc-shaped guide rail (26) forms a central arc-shaped groove and a boundary arc-shaped groove through the four arc-shaped plates. The main rod (24) is located inside the central arc-shaped groove, and the secondary rod (210) is located inside the boundary arc-shaped groove.
6. The conduit threading limiting device according to claim 5, characterized in that, The main rod (24) has an anti-detachment block fixedly installed at the upper end of the arc-shaped guide rail (26), and the width of the anti-detachment block is greater than the width of the central arc-shaped groove.
7. The conduit threading limiting device according to claim 6, characterized in that, The bottom surface of the magnetic stop (25) adjacent to the main rod (24) is provided with an opening for accommodating the anti-detachment block.
8. The conduit threading limiting device according to claim 1, characterized in that, There are two auxiliary rods (210), which are symmetrically arranged on both sides of the axis of the main rod (24).