Connecting and positioning tool for cold extrusion of reinforcing steel bars

Abstract

The utility model discloses a steel bar cold extrusion connecting and positioning tool which comprises a bottom plate, a limiting assembly used for limiting a cold extrusion steel bar is installed at the upper end of the bottom plate, and the limiting assembly comprises a limiting baffle, a linkage rod, a screw rod, a hand wheel, a sliding rail and a limiting clamping plate. The steel bar cold extrusion device has the beneficial effects that the limiting assembly composed of the limiting baffle, the linkage rod, the screw rod, the hand wheel, the sliding rail and the limiting clamping plate is installed on the upper side of the bottom plate; the reinforcing steel bars on the two sides of the connecting sleeve in the cold extrusion process are clamped and limited through cooperation of the limiting clamping plates and the limiting baffles, shaking of the reinforcing steel bars on the two sides of the connecting sleeve in the cold extrusion process is avoided, the connecting strength between the reinforcing steel bars and the connecting sleeve after cold extrusion is ensured, and the connecting quality of the reinforcing steel bars after cold extrusion is better; and use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of cold extrusion connection and positioning technology of reinforcing bars, and specifically to a cold extrusion connection and positioning tool for reinforcing bars. Background Technology

[0002] During tunnel construction, in order to ensure that the length of the reinforcing bars meets the usage requirements, it is often necessary to press the connecting sleeve onto the joint of two reinforcing bars by cold extrusion to achieve cold extrusion connection between the two reinforcing bars.

[0003] Currently, when cold-extrude two steel bars to connect during tunnel construction, the two steel bars are inserted into a connecting sleeve, and then the connecting sleeve is placed in the extrusion head of the cold extrusion equipment. The connecting sleeve is pressed onto the steel bars through cold extrusion. Although the above cold extrusion method can connect two steel bars, the steel bars on both sides of the connecting sleeve are not effectively restrained during the cold extrusion process. This can easily cause the steel bars to skew relative to the connecting sleeve due to the shaking of the steel bars on both sides of the connecting sleeve during the cold extrusion process. As a result, the connection strength between the steel bars after cold extrusion is poor and does not meet the usage requirements. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide a cold extrusion connection positioning tool that can quickly limit and fix the steel bars on both sides of the connecting sleeve during the cold extrusion process, avoid the shaking of the steel bars on both sides of the connecting sleeve during the cold extrusion process, and ensure the connection strength of the steel bars after cold extrusion.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes a cold extrusion connection positioning tool for reinforcing bars, including a base plate. A limiting component for limiting the position of cold extruded reinforcing bars is installed on the upper end of the base plate. The limiting component includes a limiting baffle, a linkage rod, a screw, a handwheel, a slide rail, and a limiting clamp. The slide rail is installed in the middle of the upper end of the base plate, the screw is installed in the middle of the slide rail, the linkage rod is installed on the screw, and the limiting clamp is located at both ends of the linkage rod. There are two limiting baffles, and the two limiting baffles are respectively facing the limiting clamp.

[0008] Furthermore, the screw passes through the linkage rod and is threadedly connected to the linkage rod.

[0009] By adopting the above technical solution, after the screw rotates, the linkage rod can move conveniently along the slide rail under the action of threaded transmission, so as to realize that the two limiting clamps simultaneously approach and clamp the steel bars on the corresponding limiting baffles.

[0010] Furthermore, the screw is rotatably connected to the slide rail, and one end of the screw extending out of the slide rail is bolted to the handwheel.

[0011] By adopting the above technical solution, the handwheel is mainly used to realize convenient rotation adjustment of the screw.

[0012] Furthermore, the limiting clamp has an L-shaped structure, and each limiting clamp has a support plate installed between its bottom two sides and the base plate.

[0013] By adopting the above technical solution, the support plate is mainly used to realize the reliable installation and fixation of the limiting baffle on the base plate.

[0014] Furthermore, a placement groove is reserved in the middle of the upper end of the linkage rod, and a support is installed on the slide rail on the side opposite to the linkage rod.

[0015] By adopting the above technical solution, the support and the placement groove can provide a supporting foundation for the extrusion head on the extrusion equipment during cold extrusion of steel bars, avoiding the need for manual lifting of the extrusion head during cold extrusion of steel bars.

[0016] Furthermore, the support has a T-shaped structure, and the upper surface of the support is flush with the bottom of the placement groove.

[0017] By adopting the above technical solution, it can be ensured that the extrusion head on the cold extrusion equipment is placed more stably on the placement groove and the support.

[0018] Furthermore, an adjustable support leg is installed at each of the four corners of the bottom of the base plate, and the adjustable support leg includes a mounting sleeve and a support foot.

[0019] By adopting the above technical solution, the adjustable support leg can ensure the stable placement of the base plate in the cold extrusion site for steel reinforcement in tunnel construction.

[0020] Furthermore, the mounting sleeve is welded to the base plate, and the support leg is threadedly connected to the mounting sleeve.

[0021] By adopting the above technical solution, the base plate can be leveled by unscrewing the support leg out of the mounting sleeve, thus ensuring the stable placement of the base plate in the tunnel reinforcement cold extrusion site.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] To address the current issue in cold extrusion connection of two steel bars during tunnel construction, the method involves inserting each steel bar into a connecting sleeve, then placing the sleeve in the extrusion head of a cold extrusion machine. The sleeve is then pressed onto the steel bars through cold extrusion. While this method achieves connection, the lack of effective restraint on either side of the connecting sleeve during the cold extrusion process makes the steel bars prone to skewing relative to the sleeve, leading to misalignment and potential damage during cold extrusion. The problem of poor connection strength between compressed steel bars, failing to meet usage requirements, is addressed by installing a limiting assembly consisting of a limiting baffle, linkage rod, screw, handwheel, slide rail, and limiting clamp on the upper side of the base plate. During cold extrusion of steel bars for tunnel construction, the limiting clamp and limiting baffle work together to clamp and limit the steel bars on both sides of the connecting sleeve, preventing them from shaking during the cold extrusion process. This ensures the connection strength between the steel bars and the connecting sleeve after cold extrusion, resulting in better connection quality and meeting usage requirements. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a cold extrusion connection positioning tool for reinforcing bars according to the present invention;

[0026] Figure 2 This is a schematic diagram of the linkage rod and the limiting clamp in the cold extrusion connection positioning tool for reinforcing bars described in this utility model;

[0027] Figure 3 This is a left sectional view of a cold extrusion connection positioning tool for reinforcing bars as described in this utility model.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Support plate; 2. Base plate; 3. Adjustable support leg; 301. Mounting screw sleeve; 302. Support foot; 4. Support; 5. Limiting assembly; 501. Limiting baffle; 502. Linkage rod; 503. Screw; 504. Handwheel; 505. Slide rail; 506. Limiting clamp; 6. Placement slot. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] like Figures 1-3As shown, a rebar cold extrusion connection positioning tool in this embodiment includes a base plate 2. A limiting component 5 for limiting the cold extruded rebar is installed on the upper end of the base plate 2. The limiting component 5 includes a limiting baffle 501, a linkage rod 502, a screw 503, a handwheel 504, a slide rail 505, and a limiting clamping plate 506. The slide rail 505 is installed in the middle of the upper end of the base plate 2, the screw 503 is installed in the middle of the slide rail 505, the linkage rod 502 is installed on the screw 503, and the limiting clamping plate 506 is located at both ends of the linkage rod 502. There are two limiting baffles 501, and the two limiting baffles 501 are respectively facing the limiting clamping plate 506. The handwheel 504 is mainly used to realize the convenient rotation adjustment of the screw 503. After the screw 503 is rotated, the linkage rod 502 can be moved conveniently along the slide rail 505 under the action of thread transmission, so that the two limiting clamping plates 506 can simultaneously move closer to the rebar on the corresponding limiting baffle 501 and clamp it.

[0032] like Figures 1-3 As shown, in this embodiment, the screw 503 passes through the linkage rod 502 and is threadedly connected to the linkage rod 502. The screw 503 is rotatably connected to the slide rail 505. One end of the screw 503 extending out of the slide rail 505 is bolted to the handwheel 504. The limiting clamp 506 has an L-shaped structure. Each limiting clamp 506 has a support plate 1 installed between its bottom two sides and the base plate 2. The support plate 1 is mainly used to realize the reliable installation and fixation of the limiting baffle 501 on the base plate 2.

[0033] like Figures 1-3 As shown in this embodiment, a placement groove 6 is reserved in the middle of the upper end of the linkage rod 502. A support 4 is installed on the slide rail 505 on the side opposite to the linkage rod 502. The support 4 and the placement groove 6 can provide a supporting foundation for the extrusion head on the extrusion equipment during cold extrusion of steel bars, avoiding manual lifting of the extrusion head during cold extrusion of steel bars. The support 4 has a T-shaped structure, and the upper end of the support 4 is flush with the bottom end of the placement groove 6, which can ensure that the extrusion head on the cold extrusion equipment is placed more stably on the placement groove 6 and the support 4.

[0034] like Figures 1-3 As shown in this embodiment, an adjusting support leg 3 is also installed at each of the four corners of the bottom end of the base plate 2. The adjusting support leg 3 includes a mounting sleeve 301 and a support foot 302. The adjusting support leg 3 can ensure that the base plate 2 is placed stably in the cold extrusion site for steel bars in tunnel construction. The mounting sleeve 301 is welded to the base plate 2, and the support foot 302 is threadedly connected to the mounting sleeve 301. By unscrewing the support foot 302 out of the mounting sleeve 301, the base plate 2 can be leveled, thus ensuring the stable placement of the base plate 2 in the cold extrusion site for steel bars in tunnel construction.

[0035] The specific implementation process of this embodiment is as follows: When cold extruding and connecting tunnel steel bars, the base plate 2 is first placed in the corresponding position inside the tunnel. Then, the extrusion head on the cold extrusion equipment is placed on the support 4 and the placement groove 6, and the connecting sleeves on the two steel bars to be connected are placed in the extrusion head. Then, the steel bars are simply inserted from both ends of the connecting sleeve. At the same time, the screw 503 is rotated by the handwheel 504 so that the limiting clamp 506 can move under the action of the linkage rod 502. The limiting clamp 506 and the limiting baffle 501 cooperate to achieve clamping and limiting of the steel parts during the cold extrusion and connection process, so as to avoid the steel bars on both sides of the connecting sleeve from shaking during the cold extrusion process, and ensure the connection strength between the steel bars and the connecting sleeve after cold extrusion, so that the connection quality of the steel bars after cold extrusion is better and meets the use requirements.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning tool for cold extrusion connection of reinforcing bars, characterized in that: The system includes a base plate (2), on which a limiting assembly (5) for limiting the position of cold-extruded steel bars is installed. The limiting assembly (5) includes a limiting baffle (501), a linkage rod (502), a screw (503), a handwheel (504), a slide rail (505), and a limiting clamp (506). The slide rail (505) is installed in the middle of the upper part of the base plate (2), the screw (503) is installed in the middle of the slide rail (505), the linkage rod (502) is installed on the screw (503), and the limiting clamp (506) is located at both ends of the linkage rod (502). There are two limiting baffles (501), and the two limiting baffles (501) are respectively facing the limiting clamp (506).

2. The rebar cold extrusion connection positioning tool according to claim 1, characterized in that: The screw (503) passes through the linkage rod (502) and is threadedly connected to the linkage rod (502).

3. The rebar cold extrusion connection positioning tool according to claim 1, characterized in that: The screw (503) is rotatably connected to the slide rail (505), and one end of the screw (503) extending out of the slide rail (505) is bolted to the handwheel (504).

4. The rebar cold extrusion connection positioning tool according to claim 1, characterized in that: The limiting clamp (506) has an L-shaped structure, and each limiting clamp (506) has a support plate (1) installed between its bottom end and the base plate (2).

5. A rebar cold extrusion connection positioning tool according to claim 1, characterized in that: A placement groove (6) is reserved in the middle of the upper end of the linkage rod (502), and a support (4) is installed on the slide rail (505) on the side opposite to the linkage rod (502).

6. A rebar cold extrusion connection positioning tool according to claim 5, characterized in that: The support (4) has a T-shaped structure, and the upper end face of the support (4) is flush with the bottom end of the placement groove (6).

7. A rebar cold extrusion connection positioning tool according to claim 1, characterized in that: An adjustable support leg (3) is also installed at each of the four corners of the bottom end of the base plate (2). The adjustable support leg (3) includes a mounting sleeve (301) and a support foot (302).

8. A rebar cold extrusion connection positioning tool according to claim 7, characterized in that: The mounting sleeve (301) is welded to the base plate (2), and the support leg (302) is threadedly connected to the mounting sleeve (301).

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