Tensioning support for bridge deck construction

Abstract

The utility model discloses a tensioning support for bridge floor construction, relates to the related field of bridge floor construction, and aims to solve the problems that the operation process of matched tensioning of an existing tensioning support is tedious, the gravity center of the whole tensioning support is prone to deviation when a winch is driven to move in the direction perpendicular to the moving direction, supporting is unstable, and the tensioning effect is poor. And the problem that the steel cable shakes greatly in the moving process is solved. Horizontal fixing plates are fixedly welded to the front ends and the rear ends of the two side C-shaped plates, sliding plates are slidably connected to the upper ends of the two side C-shaped plates, a mounting platform is arranged on one sides of the sliding plates and comprises a fixing frame, the fixing frame is fixed to the sliding plates, and a lower connecting support is arranged at the lower end of the fixing frame; the lower connecting support is composed of a limiting sliding block and an L-shaped connecting plate, the limiting sliding block and the fixing frame are welded and fixed, the limiting sliding block slides along an inner groove of the side C-shaped plate, and the L-shaped connecting plate is integrally connected to the lower end of the limiting sliding block.

Description

Technical Field

[0001] The utility model relates to the field related to bridge deck construction, in particular to a tensioning bracket for bridge deck construction. Background Art

[0002] Prestressing is to add tension to the components in advance, so that the prestressed components are subjected to compressive stress, which in turn causes them to undergo certain deformations to cope with the loads on the structure itself, including the load of the component's own weight, wind load, snow load, earthquake load, etc. According to the timing of prestressing, the application of prestressing can be divided into pre-tensioning and post-tensioning. Large bridges and roads all use post-tensioning. The quality of prestressing directly affects the service life of the main project. For the construction of post-tensioned prestressed concrete for bridges, prestressed tendons are used. Generally, prestressed tendons are heat-treated steel bars, steel wires, steel strands, etc.

[0003] The installation of anchors and tensioning equipment requires the use of tensioning brackets to ensure that the line of action of the tensioning force and the center line of the hole coincide with each other during the tensioning process. At present, the tensioning bracket mainly provides the functions of fixing and driving movement. The winch used to pull the steel cable of the fixed tensioning equipment is fixed on the tensioning bracket. When moving, another driving structure is required to drive the winch connected to the steel cable to move in the vertical direction of the moving direction, so that the tensioning equipment is away from the prestressed tendons that have been pre-tensioned, so that the tensioning equipment does not interfere with the position of other prestressed tendons during its movement, until it moves to the position of another prestressed tendon, and then pulls back the tensioning equipment to make it cooperate with the prestressed tendons for tensioning; this part of the operation process is relatively cumbersome, and when the winch is driven to move in the vertical direction of the moving direction, it is easy to deviate the center of gravity of the entire tensioning bracket, resulting in unstable support and large shaking of the steel cable during movement. Utility Model Content

[0004] The purpose of the utility model is to provide a tensioning bracket for bridge deck construction to solve the problem raised in the above-mentioned background technology that the operation process of the current tensioning bracket for tensioning is relatively cumbersome, and when the winch is driven to move in a direction perpendicular to the moving direction, the center of gravity of the entire tensioning bracket is easily offset, resulting in unstable support and large shaking of the steel cable during movement.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tensioning bracket for bridge deck construction, comprising a side C-shaped plate, the front and rear ends of the two side C-shaped plates are welded and fixed with horizontal fixing plates, the upper ends of the two side C-shaped plates are slidably connected with sliding plates, one side of the sliding plate is provided with a mounting platform, the mounting platform comprises a fixing frame, the fixing frame is fixed to the sliding plate, the lower end of the fixing frame is provided with a lower connecting bracket, the lower connecting bracket is composed of a limiting sliding block and an L-shaped connecting plate, the limiting sliding block is welded and fixed to the fixing frame, the limiting sliding block slides along the inner groove of the side C-shaped plate, the L-shaped connecting plate is integrally connected to the lower end of the limiting sliding block, a driving hydraulic cylinder is installed on the inner side of the L-shaped connecting plate, an end fixing plate is fixed on the outer side of the L-shaped connecting plate along the output rod end of the driving hydraulic cylinder, and a pushing fork is fixed in the middle of the outer side of the end fixing plate.

[0006] Preferably, inner fixing plates are fixed in the fixing frame at equal intervals from front to back, a through groove is formed between two adjacent inner fixing plates along the inner edge of the fixing frame, and mounting hole grooves are formed through the inner fixing plates at both ends and in the middle.

[0007] Preferably, a driving motor is installed in the middle of the rear end of the horizontal fixed plate at the rear end, a threaded rod is installed between the two horizontal fixed plates along the output shaft end of the driving motor, and a limiting sliding rod is fixed along both sides of the threaded rod between the two horizontal fixed plates.

[0008] Preferably, lower sliding blocks are fixed in the middle and on both sides of the lower end of the sliding plate, the lower sliding blocks on both sides slide along the limiting sliding rod, and the lower sliding block in the middle is threadedly connected to the threaded rod.

[0009] Preferably, both ends of the lower ends of the two side C-shaped plates are welded and fixed with I-shaped supporting upright plates, and the lower ends of the two I-shaped supporting upright plates are welded and fixed with a lower supporting plate.

[0010] Preferably, fixed feet are fixed at the four corners of the lower end of the lower support plate, and a support plate is fixed at the inner end of the lower end of the fixed feet.

[0011] Preferably, the fixing foot is provided with a fixing hole groove extending through the outer portion of the lower support plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The camming mechanism that is used for this purpose is very convenient for carrying out the work of the user. The camming mechanism, the control mechanism, the control mechanism of the lift, the control mechanism of the support frame, and the control mechanism of the support frame are very convenient for carrying out the work of the user.

[0014] In the utility model, the winch is installed on the inner fixed plate of the installation platform. The steel cable of the winch passes downward through the groove. The downward steel cable can be pushed outward by the pushing fork, and can also move inward due to the retraction of the pushing fork and the downward influence of its own gravity, thereby assisting in the movement of the steel cable to complete the tensioning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a tensioning bracket for bridge deck construction from a main perspective of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of a tensioning bracket for bridge deck construction according to the utility model from an upward angle;

[0017] Figure 3 It is a top view of a tensioning bracket for bridge deck construction of the utility model;

[0018] Figure 4 This is a structural cross-sectional view of the AA position of a tensioning bracket for bridge deck construction according to the utility model.

[0019] In the figure: 1. Lower support plate; 2. Fixed foot; 3. Support plate; 4. Fixed hole groove; 5. I-shaped support vertical plate; 6. Side C-shaped plate; 7. Horizontal fixed plate; 8. Drive motor; 9. Threaded rod; 10. Limit sliding rod; 11. Sliding plate; 12. Lower sliding block; 13. Installation platform; 14. Fixed frame; 15. Inner fixed plate; 16. Through slot; 17. Mounting hole groove; 18. Lower connecting bracket; 19. Limit sliding block; 20. L-shaped connecting plate; 21. Drive hydraulic cylinder; 22. End fixed plate; 23. Push fork. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] See also Figure 1-4 The utility model provides an embodiment: a tensioning bracket for bridge deck construction, including a side C-shaped plate 6, the front and rear ends of the two side C-shaped plates 6 are welded and fixed with horizontal fixing plates 7, both ends of the lower ends of the two side C-shaped plates 6 are welded and fixed with I-shaped supporting upright plates 5, the lower ends of the two I-shaped supporting upright plates 5 are welded and fixed with a lower supporting plate 1, the four corners of the lower end of the lower supporting plate 1 are fixed with fixing feet 2, the inner ends of the lower ends of the fixing feet 2 are fixed with supporting plates 3, the fixing feet 2 are penetrated along the outer part of the lower supporting plate 1 to open a fixing hole groove 4, and the fixing feet 2 are fixed by screws passing through the fixing hole groove 4 to complete the fixation of the tensioning bracket.

[0022] A driving motor 8 is installed in the middle of the rear end of the rear horizontal fixing plate 7, a threaded rod 9 is installed between the two horizontal fixing plates 7 along the output shaft end of the driving motor 8, and a limiting sliding rod 10 is fixed between the two horizontal fixing plates 7 along both sides of the threaded rod 9.

[0023] The upper ends of the two side C-shaped plates 6 are slidably connected with sliding plates 11, and lower sliding blocks 12 are fixed in the middle and on both sides of the lower ends of the sliding plates 11. The lower sliding blocks 12 on both sides slide along the limiting sliding rods 10 for limiting; the middle lower sliding block 12 is threadedly connected to the threaded rod 9, and a mounting platform 13 is provided on one side of the sliding plate 11. The mounting platform 13 includes a fixed frame 14, which is fixed to the sliding plate 11, and inner fixing plates 15 are fixed equidistantly from front to back in the fixed frame 14. The thickness of the inner fixing plates 15 is thinner than that of the fixed frame 14, and the installed equipment has peripheral protection; a through groove 16 is formed between two adjacent inner fixing plates 15 along the inner edge of the fixed frame 14, and mounting hole grooves 17 are opened through the inner fixing plates 15 at both ends and in the middle, and the winch is installed on the inner fixing plate 15 of the mounting platform 13, and the steel cable of the winch passes through the through groove 16 downward.

[0024] A lower connecting bracket 18 is provided at the lower end of the fixed frame 14, and the lower connecting bracket 18 is composed of a limit sliding block 19 and an L-shaped connecting plate 20. The limit sliding block 19 is welded and fixed to the fixed frame 14, and the limit sliding block 19 slides along the inner groove of the side C-shaped plate 6. The L-shaped connecting plate 20 is integrally connected to the lower end of the limit sliding block 19. A driving hydraulic cylinder 21 is installed on the inner side of the L-shaped connecting plate 20, and an end fixing plate 22 is fixed on the outer side of the L-shaped connecting plate 20 along the output rod end of the driving hydraulic cylinder 21, and a pushing fork 23 is fixed in the middle of the outer side of the end fixing plate 22.

[0025] The lower sliding block 12, the sliding plate 11, the mounting platform 13, the winch installed on the upper end of the mounting platform 13, the lower connecting bracket 18, the driving hydraulic cylinder 21 and the pushing fork 23 will move together to reach the upper end of the position where the prestressed tendons are located.

[0026] Working principle: Place the tensioning bracket at the end of the bridge deck, and the installation platform 13 is located at the upper end of the position where multiple groups of prestressed tendons are located. Use screws to fix the fixing feet 2 to complete the fixation of the tensioning bracket. Install the winch on the inner fixing plate 15 of the installation platform 13, the steel cable of the winch passes downward through the slot 16, and the fulcrum is determined by the push fork 23. The lower end of the steel cable is fixed to the connecting cable of the tensioning device through a hook.

[0027] The driving hydraulic cylinder 21 drives the pushing fork 23 to retract, so that the steel cable connected to the tensioning equipment retracts, and the operator operates to make the tensioning equipment correspond to the prestressed tendon and perform the tensioning work; after the prestressed tendon is tensioned, the driving hydraulic cylinder 21 drives the pushing fork 23 to extend, so that the tensioning equipment is away from one end of the prestressed tendon, and the driving motor 8 drives the threaded rod 9 to rotate, driving the lower sliding block 12, the sliding plate 11, the mounting platform 13, the winch installed on the upper end of the mounting platform 13, the lower connecting bracket 18 and the steel cable pushed by the pushing fork 23 to move horizontally until the tensioning equipment corresponds to the horizontal position of another un-tensioned prestressed tendon, and the driving hydraulic cylinder 21 drives the pushing fork 23 to retract, and the tensioning equipment corresponds to the prestressed tendon and performs the tensioning work; repeat the operation to complete the tensioning of the prestressed tendons at this bridge deck position.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A tensioning support for bridge deck construction, comprising a side C-shaped plate (6), characterized in that: The front and rear ends of the two side C-shaped plates (6) are both welded and fixed with a horizontal fixed plate (7); the upper ends of the two side C-shaped plates (6) are slidably connected with a sliding plate (11); a mounting platform (13) is provided on one side of the sliding plate (11); the mounting platform (13) comprises a fixing frame (14); the fixing frame (14) is fixed to the sliding plate (11); a lower connecting bracket (18) is provided at the lower end of the fixing frame (14); the lower connecting bracket (18) is composed of a limit sliding block (19) and an L-shaped connecting member. The limiting sliding block (19) is welded and fixed to the fixing frame (14), the limiting sliding block (19) slides along the inner groove of the side C-shaped plate (6), the L-shaped connecting plate (20) is integrally connected to the lower end of the limiting sliding block (19), a driving hydraulic cylinder (21) is installed on the inner side of the L-shaped connecting plate (20), an end fixing plate (22) is fixed on the outer side of the L-shaped connecting plate (20) along the output rod end of the driving hydraulic cylinder (21), and a pushing fork (23) is fixed in the middle of the outer side of the end fixing plate (22).

2. A tensioning bracket for bridge deck construction according to claim 1, characterized in that: Inner fixing plates (15) are fixed in the fixing frame (14) at equal intervals from front to back, a through slot (16) is formed between two adjacent inner fixing plates (15) along the inner edge of the fixing frame (14), and mounting hole slots (17) are formed through the inner fixing plates (15) at both ends and in the middle.

3. The tensioning bracket for bridge deck construction according to claim 1, characterized in that: A driving motor (8) is installed in the middle of the rear end of the horizontal fixing plate (7) at the rear end, a threaded rod (9) is installed between the two horizontal fixing plates (7) along the output shaft end of the driving motor (8), and a limiting sliding rod (10) is fixed along both sides of the threaded rod (9) between the two horizontal fixing plates (7).

4. A tensioning bracket for bridge deck construction according to claim 3, characterized in that: Lower sliding blocks (12) are fixed in the middle and on both sides of the lower end of the sliding plate (11). The lower sliding blocks (12) on both sides slide along the limit sliding rod (10), and the lower sliding block (12) in the middle is threadedly connected to the threaded rod (9).

5. The tensioning bracket for bridge deck construction according to claim 1, characterized in that: Both ends of the lower ends of the two side C-shaped plates (6) are welded and fixed with I-shaped support upright plates (5), and the lower ends of the two I-shaped support upright plates (5) are welded and fixed with a lower support plate (1).

6. A tensioning bracket for bridge deck construction according to claim 5, characterized in that: Fixed feet (2) are fixed at the four corners of the lower end of the lower support plate (1), and a support plate (3) is fixed at the inner end of the lower end of the fixed foot (2).

7. A tensioning bracket for bridge deck construction according to claim 6, characterized in that: The fixing foot (2) is provided with a fixing hole groove (4) extending through the outer portion of the lower support plate (1).

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