Precise positioning device for beam body steel bar binding of prefabricated box beam

Abstract

The invention relates to the technical field of steel bar binding and positioning, and discloses a prefabricated box girder body steel bar binding accurate positioning device which comprises two pieces of bottom plate angle steel, two pieces of web angle steel and a plurality of sets of supports, and the bottom plate angle steel and the web angle steel are symmetrically and fixedly installed on the multiple sets of supports; and clamping grooves corresponding to each other are formed in the bottom plate angle steel and the web angle steel. The device is pulled to move from one end of the bottom plate angle steel to the other end of the bottom plate angle steel, when the locking blocks installed at the bottom of the device move to the clamping grooves formed in the bottom plate angle steel, the locking blocks are inserted into the corresponding clamping grooves under the elastic force action of the compression springs, the position of the device is locked through the locking blocks, and at the moment, the locking blocks are locked. The steel bars to be bound can be put down from the positioning grooves, the steel bars fall into the corresponding clamping grooves formed in the bottom plate angle steel and the web angle steel, sequential placement operation of the steel bars is achieved, the positions of the steel bars placed in the positioning grooves are accurate, and the situation that the subsequent binding operation is affected due to steel bar placement deviation is avoided.

Description

Technical Field

[0001] This invention relates to the field of rebar tying and positioning technology, and in particular to a precise positioning device for rebar tying in precast box girder beams. Background Technology

[0002] Since the binding of the steel reinforcement cage is the most labor-intensive, complicated, and time-consuming part of the precast box girder production process, it is an important step in the precast box girder production. Installing the bottom plate and web reinforcement of the precast box girder on a fixed jig can ensure the installation spacing of the semi-finished reinforcement and improve construction efficiency.

[0003] The existing integrated binding jig for bottom and web reinforcement (publication number: CN205766794U) has at least the following drawbacks: The above-mentioned patent can quickly and accurately position the web stirrups, bottom stirrups, and web horizontal reinforcement by using the integrated binding jig for bottom and web reinforcement, thereby improving the binding accuracy of precast box girder reinforcement and accelerating the binding speed of precast box girder reinforcement; However, due to the relatively dense number of slots on the bottom plate angle steel and web plate angle steel, it is easy for workers to place the reinforcement in the wrong position, which will affect the subsequent binding operation. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a precise positioning device for tying the reinforcing bars of precast box girders.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A precise positioning device for tying reinforcing bars in a precast box girder includes two bottom plate angle steels, two web plate angle steels, and multiple sets of supports. The bottom plate angle steels and web plate angle steels are symmetrically fixedly installed on the multiple sets of supports, and each bottom plate angle steel and web plate angle steel has a corresponding slot. The device also includes: The positioning base plate and two positioning side plates are respectively inclined and fixedly installed at both ends of the positioning base plate. The positioning base plate and the positioning side plates form a V-shaped structure. The outer surfaces of the positioning base plate and the positioning side plates are all provided with positioning grooves for the reinforcing bars to pass through. The movable component is installed on the outside of the positioning base plate and the positioning side plate to support the positioning base plate and the positioning side plate as they move on the base plate angle steel and the web plate angle steel.

[0006] As a further embodiment of the present invention, the movable component includes two mounting plates fixedly installed on the outside of the positioning side plate, two second rollers rotatably installed between the two mounting plates, and two sets of fixing blocks symmetrically fixedly installed on the lower surface of the positioning base plate in pairs, with a rotating shaft rotatably installed through the outer surface of each set of fixing blocks, and first rollers fixedly installed at both ends of the rotating shaft.

[0007] As a further embodiment of the present invention, a locking mechanism is installed at the bottom of the positioning base plate. The locking mechanism includes a support tube fixedly installed on the lower surface of the positioning base plate. Guide rods are inserted at both ends of the support tube. A locking block is fixedly installed at the end of the guide rod away from the support tube. The locking block can be inserted into a slot opened on the angle steel of the base plate. An unlocking component for unlocking the locking block is installed at the bottom of the positioning base plate.

[0008] As a further embodiment of the present invention, the unlocking component includes a mounting block fixedly installed on the lower surface of the positioning base plate. A pull rod is inserted through the outer surface of the mounting block. A crossbar is fixedly installed at one end of the pull rod near the locking block. Rotating rods are rotatably installed at both ends of the crossbar. The end of the rotating rod away from the crossbar is rotatably installed with the outer surface of the locking block.

[0009] As a further embodiment of the present invention, a compression spring is sleeved on the outer surface of the pull rod, and the compression spring is disposed between the mounting block and the crossbar.

[0010] As a further embodiment of the present invention, a detection mechanism for detecting whether reinforcing bars are missing is installed between the positioning base plate and the positioning side plate. The detection mechanism includes a T-shaped plate fixedly installed between the inner sides of the positioning base plate and the positioning side plate. A positioning block is fixedly installed on the outer surface of the T-shaped plate. A movable rod is inserted through the outer surface of the positioning block. A detection block is fixedly installed at one end of the movable rod away from the positioning block. The end of the detection block has a tapered structure. A limit ring is fixedly installed at the other end of the movable rod.

[0011] As a further embodiment of the present invention, an alarm is fixedly installed on the outer surface of the T-shaped plate, and a touch switch corresponding to the end of the movable rod is fixedly installed on the outer surface of the alarm.

[0012] As a further embodiment of the present invention, a reset spring is sleeved on the outer surface of the movable rod, and the reset spring is disposed between the detection block and the positioning block.

[0013] The beneficial effects of this invention are as follows: 1. By pulling this device from one end of the base plate angle steel to the other end, when the locking block installed at the bottom of the device moves to the slot opened on the base plate angle steel, the locking block will be inserted into the corresponding slot under the elastic force of the compression spring, so that the locking block locks the position of the device. At this time, the reinforcing bars to be tied can be lowered from the positioning slot, so that the reinforcing bars fall into the corresponding slots opened on the base plate angle steel and the web plate angle steel, realizing the sequential placement of reinforcing bars. The reinforcing bars placed from the positioning slot are accurately positioned, avoiding the placement of reinforcing bars offset, which would affect the subsequent tying operation. 2. When the device is pulled, the detection blocks installed on the positioning base plate and positioning side plate will pass over the newly placed rebar. Since the end of the detection block is a conical structure, when the end of the detection block is squeezed, it can drive the movable rod to move in the direction of the alarm, so that the ends of the three movable rods can touch the trigger switch at the same time. At this time, it means that the rebar is placed in the correct position. If the ends of the three movable rods do not touch the trigger switch at the same time, the alarm will remind the staff that the rebar is placed in the wrong position, and the staff will check and resolve the issue again. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation state structure of a precise positioning device for tying reinforcing bars in a precast box girder, as proposed in this invention. Figure 2 This is a schematic diagram of the bottom plate angle steel and web plate angle steel structure of a precast box girder reinforcement binding precision positioning device proposed in this invention; Figure 3 This is a schematic diagram of the positioning base plate structure of a precise positioning device for tying reinforcing bars in a precast box girder, as proposed in this invention. Figure 4 This is a schematic diagram of the bottom structure of the positioning base plate of a precision positioning device for tying reinforcing bars in a precast box girder, as proposed in this invention. Figure 5 This is a schematic diagram of the positioning groove structure of a precision positioning device for tying reinforcing bars in a precast box girder, as proposed in this invention. Figure 6 This is a schematic diagram of the detection block structure of a precision positioning device for tying reinforcing bars in a precast box girder, as proposed in this invention. Figure 7 for Figure 4 Enlarged view of the structure at point A in the middle; Figure 8 for Figure 5 Enlarged view of the structure at point B in the middle.

[0015] In the diagram: 1. Base plate angle steel; 2. Bracket; 3. Web plate angle steel; 4. Slot; 5. Positioning base plate; 6. Positioning side plate; 7. Fixing block; 8. Rotating shaft; 9. First roller; 10. Support tube; 11. Guide rod; 12. Locking block; 13. Positioning groove; 14. Mounting plate; 15. Second roller; 16. Mounting block; 17. Pull rod; 18. Compression spring; 19. Crossbar; 20. Rotating rod; 21. Pull ring; 22. T-shaped plate; 23. Positioning block; 24. Alarm; 25. Touch switch; 26. Movable rod; 27. Detection block; 28. Return spring; 29. ​​Limit ring. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] See attached document Figure 1 -Appendix Figure 8 A precise positioning device for tying reinforcing bars in a precast box girder includes two bottom plate angle steels 1, two web plate angle steels 3, and multiple sets of supports 2. The bottom plate angle steels 1 and web plate angle steels 3 are symmetrically fixed on the multiple sets of supports 2, and each bottom plate angle steel 1 and web plate angle steel 3 has a corresponding slot 4. The device also includes: The positioning base plate 5 and two positioning side plates 6 are respectively inclined and fixedly installed at both ends of the positioning base plate 5. The positioning base plate 5 and the positioning side plates 6 form a V-shaped structure. The outer surfaces of the positioning base plate 5 and the positioning side plates 6 are all provided with positioning grooves 13 for the reinforcing bars to pass through. The movable component is installed on the outside of the positioning base plate 5 and the positioning side plate 6 to support the positioning base plate 5 and the positioning side plate 6 as they move on the base plate angle steel 1 and the web plate angle steel 3. The movable component includes two mounting plates 14 fixedly installed on the outside of the positioning side plate 6. Two second rollers 15 are rotatably installed between the two mounting plates 14. Two sets of fixing blocks 7 are symmetrically fixedly installed in pairs on the lower surface of the positioning base plate 5. A rotating shaft 8 is rotatably installed through the outer surface of each set of fixing blocks 7. First rollers 9 are fixedly installed at both ends of the rotating shaft 8. A locking mechanism is installed at the bottom of the positioning base plate 5. The locking mechanism includes a support tube 10 fixedly installed on the lower surface of the positioning base plate 5. Guide rods 11 are inserted into both ends of the support tube 10. A locking block 12 is fixedly installed at the end of the guide rod 11 away from the support tube 10. The locking block 12 can be inserted into a slot 4 opened on the base plate angle steel 1. An unlocking component for unlocking the locking block 12 is installed at the bottom of the positioning base plate 5.

[0019] In use, place the reinforcing bars to be tied inside the positioning base plate 5 and positioning side plate 6, and pull the device from one end of the base plate angle steel 1 to the other end. When the locking block 12 installed at the bottom of the device moves to the slot 4 opened on the base plate angle steel 1, the locking block 12 will be inserted into the corresponding slot 4 under the elastic force of the compression spring 18, so that the locking block 12 locks the position of the device (the slot 4 at the initial end of the base plate angle steel 1 needs to be skipped). At this time, the reinforcing bars to be tied can be put down from the positioning groove 13, so that the reinforcing bars fall into the corresponding slots 4 opened on the base plate angle steel 1 and web plate angle steel 3, realizing the sequential placement of reinforcing bars. The reinforcing bars placed at the positioning groove 13 are accurately positioned, avoiding the placement of reinforcing bars offset and affecting the subsequent binding operation.

[0020] In this embodiment, the unlocking component includes a mounting block 16 fixedly installed on the lower surface of the positioning base plate 5. A pull rod 17 is inserted through the outer surface of the mounting block 16. A crossbar 19 is fixedly installed at one end of the pull rod 17 near the locking block 12. A pull ring 21 is fixedly installed at the other end of the pull rod 17. Rotating rods 20 are rotatably installed at both ends of the crossbar 19. The end of the rotating rod 20 away from the crossbar 19 is rotatably installed with the outer surface of the locking block 12. A compression spring 18 is sleeved on the outer surface of the pull rod 17. The compression spring 18 is disposed between the mounting block 16 and the crossbar 19.

[0021] After the reinforcing bars are placed, pull the pull ring 21 outwards, so that the pull ring 21 pulls the locking block 12 towards the middle through the pull rod 17, the crossbar 19 and the rotating rod 20, so that the locking block 12 is pulled out of the slot 4. At this time, the device can be pulled to continue moving. After the device has moved a certain distance, release the pull ring 21, and then the locking operation can be performed again through the locking block 12.

[0022] In this embodiment, a detection mechanism for detecting whether reinforcing bars are missing is installed between the positioning base plate 5 and the positioning side plate 6. The detection mechanism includes a T-shaped plate 22 fixedly installed between the inner sides of the positioning base plate 5 and the positioning side plate 6. A positioning block 23 is fixedly installed on the outer surface of the T-shaped plate 22. A movable rod 26 is inserted through the outer surface of the positioning block 23. A detection block 27 is fixedly installed at one end of the movable rod 26 away from the positioning block 23. The end of the detection block 27 has a tapered structure. A limit ring 29 is fixedly installed at the other end of the movable rod 26. An alarm 24 is fixedly installed on the outer surface of the T-shaped plate 22. A touch switch 25 corresponding to the end of the movable rod 26 is fixedly installed on the outer surface of the alarm 24. A return spring 28 is sleeved on the outer surface of the movable rod 26. The return spring 28 is located between the detection block 27 and the positioning block 23.

[0023] When the device is pulled, the detection block 27 installed on the positioning base plate 5 and the positioning side plate 6 will pass over the newly placed steel bar. Since the end of the detection block 27 is a conical structure, when the end of the detection block 27 is squeezed, it can drive the movable rod 26 to move towards the alarm 24, so that the ends of the three movable rods 26 can touch the trigger switch 25 at the same time. This means that the steel bar is placed in the correct position. If the ends of the three movable rods 26 do not touch the trigger switch 25 at the same time, the alarm 24 will remind the staff that the steel bar is placed in the wrong position, and the staff will check and resolve the issue again.

[0024] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: When in use, the reinforcing bars to be tied are placed inside the positioning base plate 5 and the positioning side plate 6, and the device is pulled from one end of the base plate angle steel 1 to the other end. When the locking block 12 installed at the bottom of the device moves to the slot 4 opened on the base plate angle steel 1, the locking block 12 will be inserted into the corresponding slot 4 under the elastic force of the compression spring 18, so that the locking block 12 locks the position of the device (the slot 4 at the initial end of the base plate angle steel 1 needs to be skipped). At this time, the reinforcing bars to be tied can be put down from the positioning groove 13, so that the reinforcing bars fall into the corresponding slots 4 opened on the base plate angle steel 1 and the web plate angle steel 3, so as to realize the sequential placement of the reinforcing bars. The position of the reinforcing bars placed by the positioning groove 13 is accurate, avoiding the placement of the reinforcing bars from being offset and affecting the subsequent binding operation. After the reinforcing bars are placed, pull the pull ring 21 outwards, so that the pull ring 21 pulls the locking block 12 towards the middle through the pull rod 17, the crossbar 19 and the rotating rod 20, so that the locking block 12 is pulled out of the slot 4. At this time, the device can be pulled to continue moving. After the device has moved a certain distance, release the pull ring 21, and then the locking operation can be performed again through the locking block 12. When the device is pulled, the detection block 27 installed on the positioning base plate 5 and the positioning side plate 6 will pass over the newly placed steel bar. Since the end of the detection block 27 is a conical structure, when the end of the detection block 27 is squeezed, it can drive the movable rod 26 to move towards the alarm 24, so that the ends of the three movable rods 26 can touch the trigger switch 25 at the same time. This means that the steel bar is placed in the correct position. If the ends of the three movable rods 26 do not touch the trigger switch 25 at the same time, the alarm 24 will remind the staff that the steel bar is placed in the wrong position, and the staff will check and resolve the issue again.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precise positioning device for tying reinforcing bars of a precast box girder, comprising two bottom plate angle steels (1), two web plate angle steels (3), and multiple sets of supports (2), wherein the bottom plate angle steels (1) and web plate angle steels (3) are symmetrically fixedly installed on the multiple sets of supports (2), and the bottom plate angle steels (1) and web plate angle steels (3) are provided with corresponding slots (4), characterized in that, Also includes: The positioning base plate (5) and two positioning side plates (6) are respectively inclined and fixedly installed at both ends of the positioning base plate (5). The positioning base plate (5) and the positioning side plates (6) form a V-shaped structure. The outer surfaces of the positioning base plate (5) and the positioning side plates (6) are provided with positioning grooves (13) for the reinforcing bars to pass through. The movable component is installed on the outside of the positioning base plate (5) and the positioning side plate (6) to support the positioning base plate (5) and the positioning side plate (6) as they move on the base plate angle steel (1) and the web plate angle steel (3).

2. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 1, characterized in that, The active component includes two mounting plates (14) fixedly installed on the outside of the positioning side plate (6). Two second rollers (15) are rotatably installed between the two mounting plates (14). Two sets of fixing blocks (7) are symmetrically fixedly installed on the lower surface of the positioning base plate (5). A rotating shaft (8) is rotatably installed through the outer surface of each set of fixing blocks (7). A first roller (9) is fixedly installed at both ends of the rotating shaft (8).

3. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 2, characterized in that, The bottom of the positioning base plate (5) is equipped with a locking mechanism. The locking mechanism includes a support tube (10) fixedly installed on the lower surface of the positioning base plate (5). Guide rods (11) are inserted at both ends of the support tube (10). A locking block (12) is fixedly installed at the end of the guide rod (11) away from the support tube (10). The locking block (12) can be inserted into the slot (4) opened on the angle steel (1) of the base plate. The bottom of the positioning base plate (5) is equipped with an unlocking component for unlocking the locking block (12).

4. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 3, characterized in that, The unlocking assembly includes a mounting block (16) fixedly installed on the lower surface of the positioning base plate (5). A pull rod (17) is inserted through the outer surface of the mounting block (16). A crossbar (19) is fixedly installed at one end of the pull rod (17) near the locking block (12). A rotating rod (20) is rotatably installed at both ends of the crossbar (19). The end of the rotating rod (20) away from the crossbar (19) is rotatably installed on the outer surface of the locking block (12).

5. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 4, characterized in that, A compression spring (18) is fitted on the outer surface of the pull rod (17), and the compression spring (18) is located between the mounting block (16) and the crossbar (19).

6. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 5, characterized in that, A detection mechanism for detecting whether reinforcing bars are missing is installed between the positioning base plate (5) and the positioning side plate (6). The detection mechanism includes a T-shaped plate (22) fixedly installed between the inner sides of the positioning base plate (5) and the positioning side plate (6). A positioning block (23) is fixedly installed on the outer surface of the T-shaped plate (22). A movable rod (26) is inserted through the outer surface of the positioning block (23). A detection block (27) is fixedly installed at one end of the movable rod (26) away from the positioning block (23). The end of the detection block (27) is a tapered structure. A limit ring (29) is fixedly installed at the other end of the movable rod (26).

7. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 6, characterized in that, An alarm (24) is fixedly installed on the outer surface of the T-shaped plate (22), and a touch switch (25) corresponding to the end of the movable rod (26) is fixedly installed on the outer surface of the alarm (24).

8. The precise positioning device for tying reinforcing bars of a precast box girder according to claim 7, characterized in that, A reset spring (28) is sleeved on the outer surface of the movable rod (26), and the reset spring (28) is located between the detection block (27) and the positioning block (23).

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