Novel hinged door structure for hydraulic reinforcement bar straightening machine
By eliminating the central gatepost of the traditional rebar straightening machine and adopting a design with separate upper and lower gate stops and a rotatable handle, the problem of inconvenient installation and maintenance in the traditional rebar straightening machine is solved, realizing convenient installation and maintenance, reducing the risk of door lock damage, and improving the safety of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGGE XUNFENG MACHINERY CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-17
AI Technical Summary
Traditional small rebar straightening machines have a double-door structure with a door post in the middle that obstructs installation and debugging, making maintenance inconvenient and causing the door lock to be easily damaged, leading to safety hazards that cannot be closed.
By eliminating the central doorpost and replacing it with a separate upper and lower door stop, and equipped with a rotatable handle and a vertically movable stop bar, it achieves unobstructed installation and adjustment, has a simple structure, is easy to maintain, and reduces the risk of door lock damage.
It enables unimpeded installation and debugging, and its structural design facilitates maintenance, reducing the probability of door lock damage and improving safety and reliability.
Smart Images

Figure CN224128479U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rebar straightening machine technology, specifically a novel double-door structure for hydraulic rebar straightening machines. Background Technology
[0002] The traditional small rebar straightening machine with its double-door operating safety features has the following disadvantages:
[0003] The double doors have a central pillar that blocks the door's position when closed. However, its central location obstructs the installation of the straightening frame and also hinders adjustment; maintenance is inconvenient; and the door locks are prone to failure, preventing the double doors from closing and causing dangerous malfunctions.
[0004] Therefore, a new double-door structure for hydraulic rebar straightening machines is proposed here. Utility Model Content
[0005] Technical problems to be solved
[0006] The purpose of this utility model is to make up for the shortcomings of the existing technology and to provide a new type of double-door structure for hydraulic rebar straightening machines.
[0007] Technical solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a novel double-door structure for a hydraulic rebar straightening machine, applied to the main body of the straightening machine, including a left door and a right door that are hinged and movably connected to the main body of the straightening machine. An upper door stop and a lower door stop are fixedly connected to the upper and lower ends of one side of the left door, respectively. A rotatable handle is installed on the upper part of the right door, and a pin is fixedly connected to one side of the handle. A fixed frame is fixedly connected inside the right door. The fixed frame has a stop bar inside that cooperates with the upper and lower door stops and can slide up and down. A pin hole is opened inside the stop bar, and the pin is inserted into the pin hole. A tension spring is connected to one end of the pin, and the end of the tension spring away from the pin is fixed to the fixed frame.
[0009] Preferably, the right door has a handle mounting groove inside, and the handle is rotatably mounted inside the handle mounting groove.
[0010] Preferably, the handle includes a handle body, a baffle is sleeved on one side of the handle body, and a limit screw is threadedly connected to another side of the handle body.
[0011] Preferably, an arc-shaped groove is provided on one side of the handle mounting slot, and the pin is movably installed inside the arc-shaped groove.
[0012] Preferably, a flange strip is also fixedly connected to the side of the left door closest to the right door.
[0013] Beneficial effects:
[0014] Compared with existing technologies, this hydraulic rebar straightening machine with its novel double-door structure has the following advantages:
[0015] This invention eliminates the central doorpost in the traditional frame and replaces it with two separate door stops, one above the other. Combined with a rotatable handle and a stop bar that moves up and down with the handle, this design allows for unobstructed installation of the straightening frame and internal adjustments. Furthermore, the design facilitates maintenance and eliminates blind spots for observation. The durable handle and simple mechanism significantly reduce the likelihood of door lock failure that could prevent the double doors from closing, resulting in excellent performance. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the external structure of the double-leaf door of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the double-leaf door of this utility model;
[0020] Figure 4 This is a schematic diagram showing the disassembled structure of the left and right doors of this utility model;
[0021] Figure 5 This is a schematic diagram of the installation structure of the handle of this utility model;
[0022] Figure 6 This is a schematic diagram of the structure of the baffle bar of this utility model;
[0023] Figure 7 This is a schematic diagram of the structure of the present invention in the locked state;
[0024] Figure 8 This is a schematic diagram of the handle of this utility model.
[0025] In the picture:
[0026] 1. Straightening machine body; 2. Left door; 3. Right door; 4. Upper door stop; 5. Lower door stop; 6. Handle; 7. Pin; 8. Fixing frame; 9. Stop bar; 10. Tension spring; 11. Flanged edge; 301. Handle mounting groove; 302. Arc-shaped slide groove; 601. Handle body; 602. Baffle plate; 603. Limit screw. Detailed Implementation
[0027] 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.
[0028] Please see Figures 1 to 8 As shown, this utility model provides a technical solution: a novel double-door structure for a hydraulic rebar straightening machine, applied to the main body 1 of the straightening machine, including a left door 2 and a right door 3 that are hinged and movably connected to the main body 1. An upper door stop 4 and a lower door stop 5 are fixedly connected to the upper and lower ends of one side of the left door 2, respectively. The upper and lower door stops are used in conjunction with a stop bar 9. A rotatable handle 6 is installed on the upper part of the right door 3, and a pin 7 is fixedly connected to one side of the handle 6. A fixed frame 8 is fixedly connected inside the right door 3. A stop bar 9, which works with the upper door stop 4 and the lower door stop 5 and can slide up and down, is provided inside the fixed frame 8. A pin hole 901 is opened inside the stop bar 9, and the pin 7 is inserted into the pin hole 901, allowing the stop bar 9 to move up and down with the rotation of the handle 6, cooperating with the upper and lower door stops to achieve locking. A tension spring 10 is connected to one end of the pin 7, and the end of the tension spring 10 away from the pin 7 is fixed to the fixed frame 8.
[0029] Please refer to the following carefully. Figure 2 , Figure 3 and Figure 5 The right door 3 has a handle mounting groove 301 inside. The handle 6 is rotatably installed inside the handle mounting groove 301. An arc-shaped slide groove 302 is opened on one side of the handle mounting groove 301. The pin 7 is movably installed inside the arc-shaped slide groove 302.
[0030] Please refer to the following carefully. Figure 8 The handle 6 includes a handle body 601, a baffle 602 is sleeved on one side of the handle body 601, and a limit screw 603 is also threaded to one side of the handle body 601. The baffle 602 is provided to limit the axial movement of the handle body 601.
[0031] Please refer to the following carefully. Figure 2 and Figure 4A flange strip 11 is fixedly connected to the side of the left door 2 near the right door 3. The folded edge of the left door 2 and the right door 3 is folded in opposite directions at the seam, and the right door 3 presses down on this flange strip 11.
[0032] Working principle: Rotating handle 6 counterclockwise unlocks the door (pulls the stop bar 9 down, causing the upper door stop 4 and lower door stop 5 to release their restriction on the stop bar 9), and locking it after releasing it (after releasing it, the stop bar 9 moves up under the action of the tension spring 10, at which time the upper door stop 4 and lower door stop 5 restrict the stop bar 9).
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] 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 novel double-door structure for a hydraulic rebar straightening machine, applied to the main body (1) of the straightening machine, comprising a left door (2) and a right door (3) that are configured to open in opposite directions and are movably connected to the main body (1) of the straightening machine via hinges, characterized in that: The upper and lower ends of the left door (2) are fixedly connected to the upper and lower ends respectively. The right door (3) is equipped with a rotatable handle (6). A pin (7) is fixedly connected to one side of the handle (6). A fixed frame (8) is fixedly connected inside the right door (3). The fixed frame (8) is provided with a stop bar (9) that works with the upper door (4) and the lower door (5) and can slide up and down. A pin hole (901) is opened inside the stop bar (9). The pin (7) is inserted into the pin hole (901). One end of the pin (7) is connected to a tension spring (10). The end of the tension spring (10) away from the pin (7) is fixed to the fixed frame (8).
2. The new type of split door structure for hydraulic steel bar straightening machine as claimed in claim 1, wherein: The right door (3) is provided with a handle mounting groove (301) inside, and the handle (6) is rotatably mounted inside the handle mounting groove (301).
3. The new type of split door structure for hydraulic steel bar straightening machine as claimed in claim 1, wherein: The handle (6) includes a handle body (601), a baffle (602) is sleeved on one side of the handle body (601), and a limit screw (603) is threadedly connected to one side of the handle body (601).
4. The new type of split door structure for hydraulic steel bar straightening machine as claimed in claim 2, wherein: An arc-shaped groove (302) is provided on one side of the handle mounting groove (301), and the pin (7) can be movably installed inside the arc-shaped groove (302).
5. The new type of split door structure for hydraulic steel bar straightening machine as claimed in claim 1, wherein: The left door (2) is also fixedly connected to the side of the right door (3) with a flange strip (11).