Box girder prestressing tendon positioning device

Abstract

The utility model discloses a box girder prestressing tendon positioning device, and particularly relates to the technical field of box girders, the box girder prestressing tendon positioning device comprises a supporting plate used for supporting, a limiting assembly is arranged on the supporting plate, the limiting assembly comprises a connecting seat which is arranged at the bottom of the supporting plate and used for supporting, and a lead screw is arranged in the middle of the connecting seat. The limiting assembly is arranged, the overall design is simple, the structure is reasonable, through corresponding cooperative use of all the structures, the lead screw rotates to drive the connecting seat to move, when the connecting seat moves, the traction rod is driven to move, the supporting rod is driven to slide in the sliding groove, and when the supporting rod moves, the ejector block and the clamping plate are driven to move; the ejector blocks and the clamping plates get close to the center point of the supporting plate to clamp the materials, and meanwhile the clamping device can be suitable for workpieces of different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of box beams, and more specifically to a box beam prestressed beam positioning device. Background Art

[0002] The box girder prestressed tendon positioning device is a device used to fix and adjust the position of the box girder prestressed tendons. Prestressed tendons are steel tendons used to apply prestress to the box girder during construction. They play a role in enhancing the bearing capacity and bending stiffness of the box girder.

[0003] The box girder prestressed tendon positioning device usually consists of a prestressed tendon positioner and an anchor. The prestressed tendon positioner is a device used to fix the prestressed tendon on the box girder, which can adjust and control the position and tension of the prestressed tendon. The anchor is a device used to anchor the prestressed tendon inside the box girder, which can provide sufficient support and fixing force to ensure that the prestressed tendon can effectively transfer the prestress to the box girder.

[0004] Among them, it was found through searching that the utility model patent with patent application number CN202221928071.4 discloses a box girder external beam reinforcement device, which belongs to the technical field of box girders. The box girder external beam reinforcement device is used to position the external prestressed steel beams in the box girder. The box girder has a box chamber. The box girder external beam reinforcement device includes a steering bracket. The steering bracket is used to position the external prestressed steel beams and transfer the prestress of the external prestressed steel beams to the box girder through the steering bracket. The steering bracket is connected to the top plate and the bottom plate of the box girder on both sides in the height direction; wherein the number of steering brackets is set to two, and the two steering brackets are respectively distributed on both sides in the width direction of the box chamber and are arranged close to the web of the box girder. A cross brace is provided between the two steering brackets, and the two ends of the cross brace are respectively connected to the two steering brackets;

[0005] When the structure is in use, by providing a first stiffening plate between the two first vertical plates and a second stiffening plate between the two second vertical plates, the first stiffening plate can improve the bearing capacity of the first vertical plate and prevent the first vertical plate from buckling at the additional support. The vertical force of the first vertical plate is mainly transmitted through the weld of the anchor plate on the first bottom plate. Similarly, the second stiffening plate can improve the bearing capacity of the second vertical plate and prevent the second vertical plate from buckling at the additional support. However, when the structure is used to limit the workpiece, it is not easy to adjust the position appropriately according to the needs, resulting in poor stabilization of the workpiece and low adaptability. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a box girder prestressed bundle positioning device, aiming to solve the problems raised in the above-mentioned background technology.

[0007] The utility model is implemented in this way. The utility model provides the following technical solutions: a box girder prestressed beam positioning device, comprising a support plate for supporting, and a limit position assembly is arranged on the support plate;

[0008] The limiting assembly comprises a connecting seat arranged at the bottom of the supporting plate for support, a screw rod is arranged in the middle of the connecting seat, and a limiting shaft installed on the supporting plate and detachably connected to the supporting plate is arranged on the top of the screw rod;

[0009] A plurality of traction rods with adjustable angles are distributed on the outer side of the connecting seat and along the circumference of the axis point of the connecting seat, a plurality of extension plates are distributed on the outer side of the supporting plate and along the circumference of the axis point of the supporting plate and are respectively located on one side of the corresponding traction rods, a guide groove is provided on the extension plate, a support rod is slidably connected in the guide groove, one end of the traction rod extends to the support rod and is movably connected to the support rod through an axle pin, a top block for support is provided at one end of the support rod, and a clamping plate for limiting is provided on the top block;

[0010] It can be seen that in the above technical solution, when the screw rotates, it will drive the connecting seat to move, and when the connecting seat moves, it will drive the traction rod to move and drive the support rod to slide in the slide groove. When the support rod moves, it will drive the top block and the clamping plate to move, so that each top block and clamping plate are close to the center point of the support plate to clamp the material.

[0011] Optionally, in a possible implementation manner, a thread sleeve detachably connected to the connecting seat is provided at the middle portion of the connecting seat, the thread sleeve is sleeved on the outside of the connecting seat and is threadedly connected to the connecting seat, a reinforcing rod is provided at the bottom of the threaded rod, a handle is provided at one end of the reinforcing rod, and a support leg for support is provided at one end of each of the plurality of extension plates, and the support leg is detachably connected to the extension plate;

[0012] It can be seen that in the above technical solution, the reinforcing rod and the screw are driven to rotate by rotating the handle, and the threaded self-locking of the thread sleeve and the screw can limit the angle of the traction rod after adjustment to ensure the stability of the workpiece when clamped.

[0013] Technical effects and advantages of the utility model:

[0014] By setting the limit assembly, compared with the prior art, the overall design is simple and the structure is reasonable. Through the corresponding coordinated use of various structures, the connecting seat is driven to move when the screw rod rotates, and the traction rod is driven to move and drive the support rod to slide in the slide groove when the connecting seat moves. When the support rod moves, the top block and the clamping plate are driven to move, so that each top block and the clamping plate are close to the center point of the support plate to clamp the material, and it can also adapt to workpieces of different sizes.

[0015] At the same time, the thread self-locking of the thread sleeve and the screw rod can limit the angle of the traction rod after adjustment to ensure the stability of the workpiece when it is clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0017] Figure 1 It is the front view of the overall structure of the utility model.

[0018] Figure 2 It is a top view of the overall structure of the utility model.

[0019] Figure 3 This is a front view of the support plate, extension plate, support rod and top block of the utility model.

[0020] Figure 4 It is the front view of the limit assembly of the utility model.

[0021] The accompanying drawings are marked as follows: 1. support plate; 2. connecting seat; 3. screw rod; 4. limiting shaft; 5. traction rod; 6. extension plate; 7. support rod; 8. slide groove; 9. top block; 10. splint; 11. thread sleeve; 12. reinforcement rod; 13. handle; 14. support leg. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] As attached Figure 1-4The box beam prestressed beam positioning device shown in the figure, through the limit assembly set on the support plate 1, the screw rod 3 will drive the connection seat 2 to move when it rotates, and when the connection seat 2 moves, it will drive the traction rod 5 to move and drive the support rod 7 to slide in the slide groove 8. When the support rod 7 moves, it will drive the top block 9 and the clamping plate 10 to move, so that each top block 9 and the clamping plate 10 are close to the center point of the support plate 1 to clamp the material. At the same time, through the thread self-locking of the thread sleeve 11 and the screw rod 3, the angle of the traction rod 5 after adjustment can be limited to ensure the stability of the workpiece when it is clamped, and the specific structure of the assembly is set as follows;

[0024] The limiting assembly includes a connecting seat 2 arranged at the bottom of the supporting plate 1 for support, a screw rod 3 is arranged in the middle of the connecting seat 2, and a limiting shaft 4 installed on the supporting plate 1 and detachably connected to the supporting plate 1 is arranged on the top of the screw rod 3;

[0025] A plurality of angle-adjustable traction rods 5 are distributed on the outside of the connecting seat 2 and along the circumference of the axis point of the connecting seat 2. A plurality of extension plates 6 are distributed on the outside of the supporting plate 1 and along the circumference of the axis point of the supporting plate 1 and are respectively located on one side of the corresponding traction rod 5. A guide groove 8 is provided on the extension plate 6. A support rod 7 is slidably connected in the guide groove 8. One end of the traction rod 5 extends to the support rod 7 and is movably connected to the support rod 7 through an axle pin. A top block 9 for support is provided at one end of the support rod 7, and a clamping plate 10 for limiting is provided on the top block 9.

[0026] A thread sleeve 11 detachably connected to the connecting seat 2 is provided in the middle part of the connecting seat 2. The thread sleeve 11 is sleeved on the outer side of the connecting seat 2 and is threadedly connected to the connecting seat 2. A reinforcing rod 12 is provided at the bottom of the screw rod 3. A handle 13 is provided at one end of the reinforcing rod 12. Support legs 14 for support are provided at one end of each of the extension plates 6. The support legs 14 are detachably connected to the extension plates 6.

[0027] According to the above structure, when in use, the staff installs the device at the designated position, and when clamping the workpiece, the workpiece is placed on the top of the support plate 1, and the reinforcing rod 12 and the screw rod 3 are driven to rotate by rotating the handle 13. When the screw rod 3 rotates, the connecting seat 2 is driven to move. When the connecting seat 2 moves, the traction rod 5 is driven to move and the support rod 7 is driven to slide in the slide groove 8.

[0028] When the support rod 7 moves, the top block 9 and the clamping plate 10 are driven to move, so that each top block 9 and the clamping plate 10 are close to the center point of the support plate 1 to clamp the material. At the same time, through the self-locking of the threaded sleeve 11 and the screw rod 3, the angle of the traction rod 5 after adjustment can be limited to ensure the stability of the workpiece when clamped.

[0029] Different from the prior art, the present application discloses a box girder prestressed bundle positioning device, which drives the connecting seat 2 to move when the screw rod 3 rotates, and when the connecting seat 2 is displaced, it drives the traction rod 5 to move and drives the support rod 7 to slide in the slide groove 8. When the support rod 7 is displaced, it drives the top block 9 and the clamping plate 10 to move, so that each top block 9 and the clamping plate 10 are close to the center point of the support plate 1 to clamp the material. At the same time, through the self-locking of the threaded sleeve 11 and the screw rod 3, the angle of the traction rod 5 after adjustment can be limited to ensure the stability of the workpiece when it is clamped.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A box girder prestressed tendon positioning device, comprising a support plate (1) for supporting, characterized in that: A limiting component is provided on the support plate (1); The limiting assembly comprises a connecting seat (2) arranged at the bottom of the support plate (1) for supporting, a screw rod (3) is arranged in the middle of the connecting seat (2), and a limiting shaft (4) is arranged at the top of the screw rod (3) and is mounted on the support plate (1) and detachably connected to the support plate (1); A plurality of traction rods (5) with adjustable angles are distributed on the outer side of the connection seat (2) and along the circumference of the axis point of the connection seat (2); a plurality of extension plates (6) are distributed on the outer side of the support plate (1) and along the circumference of the axis point of the support plate (1), each of which is located on one side of the corresponding traction rod (5).

2. A box girder prestressed tendon positioning device according to claim 1, characterized in that: The extension plate (6) is provided with a guide slot (8), a support rod (7) is slidably connected in the slot (8), and one end of the traction rod (5) extends to the support rod (7) and is movably connected to the support rod (7) via an axle pin.

3. A box girder prestressed tendon positioning device according to claim 2, characterized in that: A top block (9) for supporting is arranged at one end of the support rod (7), and a clamping plate (10) for limiting is arranged on the top block (9).

4. A box girder prestressed tendon positioning device according to claim 1, characterized in that: A thread sleeve (11) detachably connected to the connection seat (2) is provided in the middle of the connection seat (2); the thread sleeve (11) is sleeved on the outside of the connection seat (2) and is threadably connected to the connection seat (2).

5. The box girder prestressed tendon positioning device according to claim 1, characterized in that: A reinforcing rod (12) is provided at the bottom of the screw rod (3), and a handle (13) is provided at one end of the reinforcing rod (12).

6. A box girder prestressed tendon positioning device according to claim 1, characterized in that: One end of each of the plurality of extension plates (6) is provided with a support leg (14) for supporting, and the support leg (14) is detachably connected to the extension plate (6).

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