Fixing device of prestressed reinforcement tensioning machine

Abstract

The fixing device comprises a main frame and a hydraulic cylinder, penetrating holes are formed in the front side and the rear side of the main frame, openings are formed in the left side wall and the right side wall of the main frame, clamping assemblies are arranged in the openings, the clamping assemblies are connected with the hydraulic cylinder through fixing assemblies, and the hydraulic cylinder is connected with the main frame. Grooves are formed in the rear portions of the left side and the right side of the main frame, the clamping assembly comprises a rotating shaft, a sleeve is fixedly connected to the outer wall of the rotating shaft, one end of a pulling rod and one end of a rotating frame are fixedly connected to the outer wall of the sleeve, and a clamping plate is fixedly connected to the other end of the rotating frame. According to the fixing device for the prestressed reinforcement tensioning machine, a pulling rod is pulled to drive a sleeve to rotate, the sleeve rotates under the action of a rotating shaft, the sleeve drives clamping plates to rotate, the clamping plates on the two sides are combined to clamp a reinforcement, and when the pulling rod is pulled to the end to be clamped into a groove, the effect of fastening and fixing the reinforcement during tensioning is achieved; and the influence caused by falling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar tensioning, in particular to a fixing device for a prestressed steel bar tensioning machine. Background Art

[0002] Stress tensioning of steel bars generally refers to the process of using steel bars for prestressing or post-tensioning in concrete structures. This technology can enhance the bearing capacity and flexural properties of concrete structures. In prestressed concrete structures, the steel bars are pre-tensioned and then kept in a tensioned state through the hardening process of the concrete. This can produce compressive stresses, putting the concrete in a state of compression and increasing its bending strength. Post-tensioning is a process that occurs after the concrete has hardened, in which the steel bars are stretched through tensioning equipment and anchoring forces are applied at both ends of the steel bars, transferring the tensioning force of the steel bars directly into the concrete structure. This helps to reduce the crack width of the concrete when it is stressed and improves the resistance and durability of the structure. In the existing steel tensioning process, the steel bars are not fixed tightly and there is a risk of falling off. Utility Model Content

[0003] The purpose of the utility model is to provide a fixing device for a prestressed steel bar tensioning machine to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixing device for a prestressed steel bar tensioning machine, comprising a main frame and a hydraulic cylinder, the front and rear sides of the main frame are both provided with through holes, the left and right side walls of the main frame are both provided with openings, a clamping assembly is provided inside the opening, the clamping assembly is connected to the hydraulic cylinder through a fixing assembly, and the left and right rear parts of the main frame are both provided with grooves.

[0005] Preferably, the clamping assembly comprises a rotating shaft, a sleeve is fixedly connected to the outer wall of the rotating shaft, one end of the pull rod and one end of the rotating frame are fixedly connected to the outer wall of the sleeve, and a clamp is fixedly connected to the other end of the rotating frame.

[0006] Preferably, the fixing assembly includes a card plate and a seat plate, the card plate is fixedly connected to the other end of the pull rod, and a first through-hole is formed on the card plate, the seat plate is fixedly connected to the output end of the hydraulic cylinder, one end of a support plate is fixedly connected to both sides of the outer wall of the seat plate, a card slot is formed on the side of the support plate, a second through-hole is formed on the support plate, the card plate is inserted into the inside of the card slot, and an insertion rod is inserted into the inside of the first through-hole and the second through-hole.

[0007] Preferably, the splint is engraved with convex patterns.

[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: the fixing device of the prestressed steel bar tensioning machine drives the sleeve to rotate by pulling the lever, and rotates under the action of the rotating shaft, and the sleeve drives the clamping plate to rotate, and the clamping plates on both sides are combined to clamp the steel bars, and when the lever is pulled to the end and stuck into the inside of the groove, the clamping plate is stuck into the inside of the slot, and then the insertion rod is inserted into the inside of the first through-hole and the second through-hole to fix the clamping plate, thereby realizing the connection between the lever and the hydraulic cylinder. At this time, the hydraulic cylinder retracts and pulls the lever to drive the main frame to move, thereby stretching and tensioning the steel bars, achieving the effect of tightening and fixing the steel bars when tensioning, and avoiding the impact of falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an axonometric drawing of the main structure of the utility model;

[0010] Figure 2 It is a schematic diagram of the clamping assembly of the utility model;

[0011] Figure 3 It is a schematic diagram of the fixing assembly of the utility model.

[0012] In the figure: 1-main frame, 2-perforation, 3-rotating shaft, 4-opening, 5-sleeve, 6-pull rod, 7-clip plate, 8-first perforation, 9-support plate, 10-clip groove, 11-insertion rod, 12-seat plate, 13-hydraulic cylinder, 14-rotating frame, 15-plywood, 16-convex pattern. DETAILED DESCRIPTION

[0013] 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.

[0014] See also Figure 1-3 The utility model provides a fixing device for a prestressed steel bar tensioning machine, comprising a main frame 1 and a hydraulic cylinder 13. The main frame 1 is the main body of the device. The contraction of the hydraulic cylinder 13 is responsible for the tensioning of the steel bars. The front and rear sides of the main frame 1 are provided with perforations 2, and the perforations 2 allow the steel bars to pass through and then be tensioned by the hydraulic cylinder 13. The left and right side walls of the main frame 1 are provided with openings 4, and the openings 4 are equipped with clamping components, etc. The clamping components are responsible for clamping and fixing the steel bars. A clamping component is arranged inside the opening 4, and the clamping component is connected to the hydraulic cylinder 13 through a fixing component, and the fixing component connects the clamping component to the hydraulic cylinder 13. The left and right rear parts of the main frame 1 are provided with grooves 18, and the grooves 18 allow sufficient space for the movement of the clamping components.

[0015] Specifically, the clamping assembly includes a rotating shaft 3, which is equipped with a sleeve 5 and can drive the movement of the sleeve 5. The rotation of the sleeve 5 drives the movement of the rotating frame 14. After the rotating frame 14 rotates, it drives the clamp 15 to clamp the steel bar. The outer wall of the rotating shaft 3 is fixedly connected to the sleeve 5. The outer wall of the sleeve 5 is fixedly connected to one end of the lever 6 and one end of the rotating frame 14. Pulling the lever 6 can control the rotation of the sleeve 5. The other end of the rotating frame 14 is fixedly connected to the clamp 15.

[0016] Specifically, the fixing assembly includes a card plate 7 and a seat plate 12, the card plate 7 is fixedly connected to the other end of the pull rod 6, and a first through hole 8 is opened on the card plate 7, the seat plate 12 is fixedly connected to the output end of the hydraulic cylinder 13, and one end of the support plate 9 is fixedly connected to both sides of the outer wall of the seat plate 12, a card slot 10 is opened on the side of the support plate 9, and a second through hole 17 is opened on the support plate 9, the card plate 7 is inserted into the inside of the card slot 10, and the inside of the first through hole 8 and the second through hole 17 is plugged with a plug rod 11, and the plug rod 11 clamps the first through hole 8 and the second through hole 17, and the card plate 7 is fixed inside the card slot 10, reference Figure 3 The state of the fixed component mating.

[0017] Specifically, the clamping plate 15 is engraved with convex patterns 16, which increase the friction force of the clamping plate 15 clamping the steel bars and reduce the risk of the clamped steel bars falling off.

[0018] Working principle: first, pass the steel bar through the inside of the through hole 2, then pull the lever 6 to drive the sleeve 5 to rotate, and rotate under the action of the rotating shaft 3. The sleeve 5 drives the clamping plate 15 to rotate, and the clamping plates 15 on both sides are combined to clamp the steel bar. When the lever 6 is pulled to the end and stuck into the inside of the groove 18, the clamping plate 7 is stuck into the inside of the clamping groove 10, and then the insertion rod 11 is inserted into the first through hole 8 and the second through hole 17, and the clamping plate 7 is fixed, thereby realizing the connection between the lever 6 and the hydraulic cylinder 13. At this time, the hydraulic cylinder 3 retracts and pulls the lever 6 to drive the main frame 1 to move, thereby stretching and tensioning the steel bar.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prestressed steel bar tensioning machine fixing device, characterized in that: The invention comprises a main frame (1) and a hydraulic cylinder (13), wherein the front and rear sides of the main frame (1) are provided with through holes (2), the left and right side walls of the main frame (1) are provided with openings (4), a clamping assembly is provided inside the opening (4), the clamping assembly is connected to the hydraulic cylinder (13) via a fixing assembly, and the left and right rear sides of the main frame (1) are provided with grooves (18).

2. A prestressed steel bar tensioning machine fixing device according to claim 1, characterized in that: The clamping assembly comprises a rotating shaft (3), the outer wall of the rotating shaft (3) is fixedly connected to a sleeve (5), the outer wall of the sleeve (5) is fixedly connected to one end of a lever (6) and one end of a rotating frame (14), and the other end of the rotating frame (14) is fixedly connected to a clamping plate (15).

3. A prestressed steel bar tensioning machine fixing device according to claim 1, characterized in that: The fixing assembly comprises a clamping plate (7) and a seat plate (12), wherein the clamping plate (7) is fixedly connected to the other end of the lever (6), and a first through hole (8) is formed on the clamping plate (7), and the seat plate (12) is fixedly connected to the output end of the hydraulic cylinder (13), and one end of a support plate (9) is fixedly connected to both sides of the outer wall of the seat plate (12), a clamping groove (10) is formed on the side of the support plate (9), and a second through hole (17) is formed on the support plate (9), and the clamping plate (7) is inserted into the inside of the clamping groove (10), and the inside of the first through hole (8) and the second through hole (17) are plugged with an insertion rod (11).

4. A prestressed steel bar tensioning machine fixing device according to claim 2, characterized in that: The clamping plate (15) is engraved with convex patterns (16).

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