Protective device of reinforcement bar straightening machine
By setting multiple coaxially arranged protective rings with progressively decreasing diameters at the feed inlet of the rebar straightening machine, combined with rollers and support frames, the problem of large-amplitude swaying during the rebar straightening process was solved, thus improving both safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ELEVENTH CHEM CONSTR
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-15
AI Technical Summary
During the straightening process of steel bars, the rotation of the steel bars causes large swings, which poses a safety hazard and may cause personal injury to the operators.
Multiple protective rings arranged coaxially with progressively decreasing diameters are connected by connecting rods, and rollers and support frames are installed on the outside. The support plates are adjustable, and the auxiliary support enhances stability and limits the swing of the reinforcing bars.
It effectively reduces large-scale swaying during the straightening process of steel bars, reduces injury to operators, ensures construction safety, and improves work efficiency and the practicality of the device.
Smart Images

Figure CN224238125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel bar processing equipment technology, and in particular to a protective device for a steel bar straightening machine. Background Technology
[0002] In engineering construction, it is necessary to straighten coiled steel bars before processing. During the straightening process, the rotation of the steel bars can cause them to swing significantly, which can easily cause personal injury to operators and pose a safety hazard. Therefore, there is an urgent need for a protective device for steel bar straightening machines that can limit the movement of the steel bars during the straightening process, prevent them from swinging significantly, and ensure construction safety. Utility Model Content
[0003] The purpose of this invention is to provide a protective device for a rebar straightening machine. It has a simple structure and is easy to operate. It can effectively reduce the large-scale swaying of coiled rebar during the straightening process, thereby reducing personal injury to operators and ensuring construction safety.
[0004] The present invention adopts the following technical solution:
[0005] A protective device for a rebar straightening machine includes multiple protective rings arranged coaxially with decreasing diameters. The multiple protective rings are connected by connecting rods disposed on their exteriors. Multiple connecting rods are arranged at intervals along the circumference of the protective rings. The protective rings located at both ends are disposed on a support frame.
[0006] Preferably, the inner wall of the protective ring is provided with multiple rollers spaced apart along the circumferential direction.
[0007] Preferably, the protective ring consists of two ring plates connected by a spaced-apart connecting plate; the roller is rotatably disposed between the two ring plates.
[0008] Preferably, the support frame includes legs disposed on the protective rings at both ends, and a strut is provided between the two legs at each end and between the two legs at both ends.
[0009] Preferably, a support plate is movably provided on each of the protective rings at both ends, and the support plate is adjustablely mounted on the support leg.
[0010] Preferably, the support leg has an adjustment groove along the vertical direction, the support plate has a bolt, and the bolt passes through the adjustment groove and is fitted with a nut.
[0011] Preferably, the outrigger is provided with an auxiliary support at an angle.
[0012] Preferably, the auxiliary support is hinged to the outrigger.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By placing a protective ring with a smaller diameter at the feed inlet of the rebar straightening machine, the coiled rebar is fed into the rebar straightening machine after passing through the protective ring. This can limit the rebar to be straightened, effectively reduce the large swing of the coiled rebar during the straightening process, thereby reducing the personal injury of the rebar to the operator and ensuring the safety of construction. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;
[0015] Figure 2 for Figure 1 A magnified view of A in the middle. Detailed Implementation
[0016] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments:
[0017] like Figures 1 to 2 As shown, the protective device for a rebar straightening machine of this utility model includes multiple protective rings 1 arranged coaxially with progressively decreasing diameters. The multiple protective rings 1 are connected by connecting rods 2 disposed on their exteriors. The connecting rods 2 are preferably connected to the protective rings 1 by welding. Multiple connecting rods 2 are spaced apart along the circumference of the protective rings 1. The protective rings 1 at both ends are mounted on a support frame. During operation, the smaller diameter protective ring 1 is placed at the feed inlet of the rebar straightening machine. The rebar to be straightened is then passed through the larger diameter protective ring 1 and exits through the smaller diameter protective ring 1, and fed into the feed inlet of the rebar straightening machine. Due to the restriction of the protective rings 1, the swaying amplitude during rebar straightening is reduced. The progressively decreasing diameter of the protective rings 1 facilitates the conveying of the rebar into the feed inlet of the straightening machine, ensuring both safety and efficiency. The structure is simple, easy to operate, and highly practical.
[0018] Furthermore, in this embodiment, multiple rollers 3 are spaced apart along the circumferential direction on the inner wall of the protective ring 1. The rollers 3 can be made of steel to improve their wear resistance. The rollers 3 reduce the wear on the inner wall of the protective ring 1 when the reinforcing bar rotates, extending the service life of the device. Preferably, the protective ring 1 consists of two ring plates 1-1, which are connected by a connecting plate 1-2 spaced apart; the rollers 3 are rotatably disposed between the two ring plates 1-1. This arrangement allows the side wall of the protective ring 1 to form a hollow structure, preventing dirt on the reinforcing bar to be straightened from falling onto the inner wall of the protective ring 1 and accumulating over time, which could cause the rollers 3 to become stuck.
[0019] Furthermore, the support frame includes legs 4 mounted on the protective rings 1 at both ends, and struts 5 are provided between the two legs 4 at each end and between the two legs 4 at both ends. Preferably, support plates 6 are movably mounted on the protective rings 1 at both ends via pivots, and the support plates 6 are adjustablely mounted on the legs 4; the movable arrangement of the support plates 6 facilitates the adjustment of the angle of the protective rings 1 relative to the support frame to meet different usage requirements. In addition, the legs 4 have vertically oriented adjustment grooves 7, and bolts are provided on the support plates 6. After the bolts pass through the adjustment grooves 7, nuts are provided. The vertical opening of the adjustment grooves 7 facilitates the adjustment of the fixing points of the support plates 6, thereby adjusting the height of the protective rings 1 to expand the applicability of this utility model.
[0020] Furthermore, in this embodiment, an auxiliary support 8 is also inclinedly provided on the support leg 4. The auxiliary support 8 contacts the ground during operation, which can enhance the stability of the device and reduce the probability of the device tipping over. Preferably, the auxiliary support 8 is hinged to the support leg 4 via a hinge shaft so that it can be folded up after use, reducing the occupation of horizontal space and facilitating storage and transportation.
[0021] In use, the smaller diameter protective ring 1 is placed at the feed inlet of the rebar straightening machine. The elevation of the protective ring 1 is adjusted to the same level as the feed inlet. Then, the rebar to be straightened is inserted through the larger diameter protective ring 1 and exited through the smaller diameter protective ring 1, and fed into the feed inlet of the rebar straightening machine. Due to the restriction of the protective ring 1, the swaying amplitude of the rebar during straightening is reduced. The gradual reduction in the diameter of the protective ring 1 facilitates the conveying of the rebar into the feed inlet of the straightening machine, ensuring both safety and efficiency. The structure is simple, easy to operate, and highly practical.
Claims
1. A protective device for a rebar straightening machine, characterized in that: It includes multiple protective rings arranged coaxially with decreasing diameters, and the multiple protective rings are connected by connecting rods disposed on their exterior. Multiple connecting rods are arranged at intervals along the circumference of the protective rings; the protective rings located at both ends are disposed on a support frame.
2. The protective device for the rebar straightening machine according to claim 1, characterized in that: The inner wall of the protective ring is provided with multiple rollers spaced apart along the circumferential direction.
3. The protective device for the rebar straightening machine according to claim 2, characterized in that: The protective ring consists of two ring plates connected by a spaced-apart connecting plate; the roller is rotatably disposed between the two ring plates.
4. The protective device for the rebar straightening machine according to claim 1, characterized in that: The support frame includes legs mounted on the protective rings at both ends, and a strut is provided between the two legs at each end and between the two legs at both ends.
5. The protective device for the rebar straightening machine according to claim 4, characterized in that: Both ends of the protective ring are movably provided with support plates, which are adjustablely mounted on the support legs.
6. The protective device for the rebar straightening machine according to claim 5, characterized in that: The support leg has an adjustment groove along the vertical direction, and the support plate has a bolt. The bolt passes through the adjustment groove and a nut is provided thereon.
7. The protective device for the rebar straightening machine according to claim 4, characterized in that: The outriggers are provided with auxiliary supports at an angle.
8. The protective device for the rebar straightening machine according to claim 7, characterized in that: The auxiliary support is hinged to the outrigger.