Movable prefabricated beam vertical steel bar positioning device

Abstract

This utility model belongs to the technical field of construction equipment and discloses a movable precast beam vertical reinforcement positioning device, including a base, a detachable enclosure connected to the base, a support connected to the enclosure, a rotating shaft connected to the support, a motor connected to the support, the motor output end connected to the rotating shaft, a connecting rope connected to the rotating shaft, a fixed pulley assembly connected to the enclosure, the connecting rope passing through the fixed pulley assembly and connecting to a positioning plate, the positioning plate being slidably connected to the enclosure, the positioning plate having positioning holes and a pouring opening, and the base having positioning grooves that mate with the positioning holes. This utility model can comprehensively prevent the reinforcement from lateral bending due to its own weight or the force of concrete vibration, ensuring the verticality and positional accuracy of the reinforcement, and also prevent it from being poured into the concrete, thus affecting the strength of the precast beam.

Description

Technical Field

[0001] This utility model relates to the field of building construction equipment technology, and in particular to a movable precast beam vertical reinforcement positioning device. Background Technology

[0002] In the production of precast beams, the positioning accuracy of vertical reinforcing bars directly affects the structural performance of the precast beams and the quality of subsequent construction. Currently, it is usually necessary to position the bottom, middle, and top of the reinforcing bars to prevent lateral bending of the middle section due to its own weight or the force of concrete vibration.

[0003] However, most existing central positioning devices employ a fixed structure rigidly connected to the reinforcing bars. While the connection strength between these devices and the vertical reinforcing bars is high, after concrete pouring, the positioning device becomes encased within the concrete, forming a rigid contact with it. If the central positioning device remains permanently embedded in the concrete, it will hinder direct contact between the concrete and the surface of the vertical reinforcing bars, weakening the bond between them. Insufficient bond strength can cause the reinforcing bars to slip under stress, reducing the overall load-bearing capacity of the precast beam. Utility Model Content

[0004] The present invention aims to provide a movable precast beam vertical reinforcement positioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A movable precast beam vertical reinforcement positioning device includes a base, a barrier detachably connected to the base, a support connected to the barrier, a winding shaft rotatably connected to the support, a motor connected to the support, the motor output end connected to the winding shaft, a connecting rope connected to the winding shaft, a fixed pulley assembly connected to the barrier, the connecting rope passing through the fixed pulley assembly and connecting to a positioning plate, the positioning plate being slidably connected to the barrier, the positioning plate having a positioning hole and a pouring opening, and a positioning groove on the base that mates with the positioning hole.

[0007] Preferably, the positioning plate has a movable groove, and a ball bearing is movably connected to the inner wall of the movable groove, the ball bearing abutting against the enclosure.

[0008] Preferably, the base is connected to a mounting frame, the enclosure is slidably connected to the mounting frame, the mounting frame is slidably connected to a pin, the pin is connected to a handle, the enclosure has a slot, the slot cooperates with the pin, and a spring is sleeved on the outside of the pin, with both ends of the spring connected to the handle and the mounting frame respectively.

[0009] Preferably, the positioning groove is connected to an anti-slip pad.

[0010] Preferably, the base is connected to a release agent layer.

[0011] Preferably, the enclosure is connected to a second layer of release agent.

[0012] The beneficial effects of this technical solution compared to existing technologies are as follows:

[0013] (1) This technical solution, by setting up a motor, a winding shaft, a connecting rope, and a positioning plate, can adjust the height of the positioning plate in real time according to the pouring height of the precast beam, so that the positioning plate always effectively constrains the height of the reinforcing bars at all heights; the positioning groove limits the reinforcing bars from the bottom, in conjunction with the real-time height adjustment of the positioning plate. This can prevent the reinforcing bars from bending laterally due to their own weight or the force of concrete vibration, ensuring the verticality and positional accuracy of the reinforcing bars, and also prevent the positioning device from being poured into the concrete, affecting the strength of the precast beam. By setting up a fixed pulley, the direction of force on the connecting rope can be changed, making the installation position of the motor and winding shaft on the support more flexible, without needing to keep them on the same vertical line as the positioning plate, saving space in the device layout; at the same time, the fixed pulley can reduce the friction between the connecting rope and the enclosure, reduce the energy loss when the motor is driven, and make the lifting and lowering of the positioning plate more stable and smooth, avoiding the impact on the height adjustment accuracy of the positioning plate due to rope jamming.

[0014] (2) By setting up movable grooves and ball bearings, the frictional resistance when the positioning plate slides along the fence can be reduced, making it easier for the motor to drive the positioning plate to rise and fall, reducing energy consumption, and making the height adjustment of the positioning plate smoother and more precise, avoiding adjustment lag or positioning deviation caused by friction jamming. In addition, rolling contact can reduce wear between the positioning plate and the fence, extend the service life of both, ensure that the positioning plate's restraint effect on the reinforcing bars is stable and reliable during long-term use, and further improve the practicality and durability of the device.

[0015] (3) By setting up an installation frame, pins, handles, springs and slots, when it is necessary to install the fence, slide the fence into the installation frame, and the pins will automatically snap into the slots under the action of the spring force to complete the fixation, without the need for complicated tools; when disassembling, pull the handle to drive the pins out of the slots and easily slide the fence out of the installation frame. The whole process is convenient and greatly improves the efficiency of disassembly and assembly.

[0016] (4) By setting anti-slip pads, the gripping force on the bottom of the steel bar can be enhanced by increasing friction, preventing the steel bar from slipping or rotating in the positioning groove, ensuring that the bottom of the steel bar and the positioning groove are always precisely matched, and providing a reliable guarantee for the accuracy of the overall position of the steel bar during the precast beam pouring process.

[0017] (5) By setting release agent layer one and release agent layer two, an isolation film can be formed on the contact surface between the base, the enclosure and the concrete during the precast beam casting process, which greatly reduces the adhesion between the concrete and the base and the enclosure, reduces the resistance during demolding, and allows the precast beam to separate from the base and the enclosure more smoothly, avoiding defects such as chipped edges and pitted surfaces on the beam surface caused by adhesion. This not only ensures the appearance quality of the precast beam, but also reduces the difficulty of demolding operation and improves the overall construction efficiency. Attached Figure Description

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is a front view of the present invention;

[0020] Figure 3 for Figure 1 Enlarged view of point A;

[0021] Reference numerals in the attached drawings: 1. Base; 2. Enclosure; 3. Bracket; 4. Rewinding shaft; 5. Connecting rope; 6. Fixed pulley assembly; 7. Positioning plate; 8. Pouring port; 9. Positioning hole; 10. Second layer of release agent; 11. Mounting frame; 12. Handle; 13. Spring; 14. Pin; 15. Slot; 16. Positioning groove; 17. Anti-slip pad; 18. First layer of release agent; 19. Motor; 20. Movable groove; 21. Ball bearing. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0023] like Figure 1-3 The movable precast beam vertical reinforcement positioning device shown includes a base 1 and a enclosure 2. A mounting frame 11 is connected to the top wall of the base 1, and the outer wall of the enclosure 2 is slidably connected to the inner wall of the mounting frame 11. Pins 14 are slidably connected to the left and right side walls of the mounting frame 11, with a handle 12 connected to one end of the pin 14 on the outer side. Slots 15 are provided at corresponding positions on the left and right side walls of the enclosure 2. A spring 13 is fitted onto the outer side of the pin 14, with both ends of the spring 13 connected to the handle 12 and the mounting frame 11, respectively. When the bottom wall of the enclosure 2 abuts against the base 1, the slots 15 align with the pins 14. When the spring 13 is in a balanced state, the pins 14 are inserted into the slots 15.

[0024] like Figure 1-3As shown, brackets 3 are connected to the left and right side walls of the enclosure 2. A winding shaft 4 is rotatably connected to the brackets 3, and a motor 19 is connected to the brackets 3. The output end of the motor 19 is connected to the winding shaft 4. A connecting rope 5 is connected to the winding shaft 4 and wound around it. A fixed pulley assembly 6 is connected to the top of the enclosure 2. The other end of the connecting rope 5 passes through the fixed pulley assembly 6 and is connected to a positioning plate 7. A movable groove 20 is formed on the side wall of the positioning plate 7. A ball bearing 21 is movably connected to the inner wall of the movable groove 20, and the ball bearing 21 abuts against the inner wall of the enclosure 2. The motor 19 drives the winding shaft 4 to rotate, causing the connecting rope 5 to change the direction of force through the fixed pulley assembly 6, thus driving the positioning plate 7 to slide along the inner wall of the enclosure 2. The ball bearing 21 in the movable groove 20 abuts against the inner wall of the enclosure 2, converting sliding friction into rolling friction, ensuring smooth lifting and lowering of the positioning plate 7. The positioning plate 7 has positioning holes 9 and a pouring opening 8. The top of the base 1 has a positioning groove 16, which mates with the positioning holes 9 to limit the vertical reinforcing bars from the top and bottom. The inner wall of the positioning groove 16 is connected to an anti-slip pad 17 to increase friction and prevent the bottom of the reinforcing bars from slipping. The top wall of the base 1 is connected to a first layer of release agent 18, and the inner side wall of the enclosure 2 is connected to a second layer of release agent 10 to reduce the adhesion between the concrete and the device, facilitating subsequent demolding.

[0025] The specific implementation process is as follows:

[0026] In use, pull handle 12 outward to completely remove pin 14 from mounting frame 11, slide enclosure 2 into mounting frame 11 until bottom wall of enclosure 2 abuts against base 1. At this point, slot 15 aligns with pin 14. Release handle 12, and pin 14 automatically inserts into slot 15 under the action of spring 13, completing the fixed installation of enclosure 2 and base 1. Place the bottom of vertical reinforcing bar into positioning groove 16 of base 1, ensuring it is in close contact with anti-slip pad 17, and pass the top through positioning hole 9 on positioning plate 7, ensuring the reinforcing bar is vertical. Pour concrete into the device through pouring port 8 on positioning plate 7. During pouring, start motor 19 according to changes in concrete height. Motor 19 drives winding shaft 4 to rotate, and adjust the height of positioning plate 7 in real time through connecting rope 5 and fixed pulley assembly 6, so that positioning plate 7 is in a suitable position in the middle of reinforcing bar. After the concrete is poured and reaches a certain strength, pull the handle 12 to disengage the pin 14 from the slot 15, slide the enclosure 2 out of the installation frame 11, remove the precast beam, and complete the dismantling of the device.

[0027] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A movable precast beam vertical reinforcement positioning device, characterized in that: The system includes a base (1), which is detachably connected to a barrier (2). The barrier (2) is connected to a bracket (3). The bracket (3) is rotatably connected to a winding shaft (4). The bracket (3) is connected to a motor (19). The output end of the motor (19) is connected to the winding shaft (4). The winding shaft (4) is connected to a connecting rope (5). The barrier (2) is connected to a fixed pulley assembly (6). The connecting rope (5) passes through the fixed pulley assembly (6) and is connected to a positioning plate (7). The positioning plate (7) is slidably connected to the barrier (2). The positioning plate (7) has a positioning hole (9) and a pouring port (8). The base (1) has a positioning groove (16). The positioning groove (16) cooperates with the positioning hole (9).

2. The movable precast beam vertical reinforcement positioning device as described in claim 1, characterized in that: The positioning plate (7) has a movable groove (20), and a ball bearing (21) is movably connected to the inner wall of the movable groove (20). The ball bearing (21) abuts against the enclosure (2).

3. The movable precast beam vertical reinforcement positioning device as described in claim 1, characterized in that: The base (1) is connected to the mounting frame (11), the enclosure (2) is slidably connected to the mounting frame (11), the mounting frame (11) is slidably connected to the pin (14), the pin (14) is connected to the handle (12), the enclosure (2) has a slot (15), the slot (15) cooperates with the pin (14), the pin (14) is sleeved with a spring (13), and the two ends of the spring (13) are respectively connected to the handle (12) and the mounting frame (11).

4. The movable precast beam vertical reinforcement positioning device as described in claim 1, characterized in that: The positioning groove (16) is connected to an anti-slip pad (17).

5. The movable precast beam vertical reinforcement positioning device as described in claim 1, characterized in that: The base (1) is connected to a release agent layer (18).

6. The movable precast beam vertical reinforcement positioning device as described in claim 1, characterized in that: The enclosure (2) is connected to a second layer of release agent (10).

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