Bridge prestress intelligent tensioning equipment

Abstract

The utility model relates to the technical field of stress testing equipment, in particular to bridge prestress intelligent tensioning equipment which comprises a base, first sliding grooves are formed in the two sides of the top face of the base respectively, and movable seats capable of moving in a reciprocating mode are installed in the two first sliding grooves respectively. Pressure testing devices are installed on the outer sides of the inner walls of the two first sliding grooves correspondingly, and two pressing plates are installed on the sides, away from each other, of the two moving seats correspondingly. Compared with the prior art, the device has the advantages that a test block is placed between the two moving seats, the four clamping rods in a circumferential array are rotatably mounted on one side of the outer part of each moving seat, the moving frames are slidably mounted on the outer parts of the two groups of clamping rods, and one group of clamping rods can clamp inwards by adjusting the positions of the moving frames, so that the test block is prevented from loosening, the test effect is not influenced, and the test efficiency is improved. A plurality of elastic plates which are arrayed circumferentially are installed on one side of the outer portion of the movable seat, are in an arch shape and are located below the clamping rods respectively, and elastic force is provided for movement of the clamping rods, so that the clamping rods can be reset.

Description

Technical Field

[0001] The utility model relates to the technical field of stress testing equipment, in particular to a bridge prestressed intelligent tensioning equipment. Background Art

[0002] Since concrete has the characteristics of low tensile strength and high compressive strength, steel bars are usually used instead of concrete to bear tensile forces in reinforced concrete components. In order to give full play to the role of high-strength steel bars in reinforced concrete structures, it is necessary to pre-stress the steel bars in the components or structures. Prestressed concrete is to artificially introduce internal stress into concrete or reinforced concrete before the structure bears the load to offset the stress generated under the use load, so that the concrete components will not crack under the use load, or the cracking will be delayed or the width of the cracks will be reduced.

[0003] The Chinese patent with application number CN201820455527.7 discloses a prestressed intelligent tensioning device, wherein the first oil pump and the second oil pump are respectively embedded on both sides of the box body, and a control cabinet is embedded between the first oil pump and the second oil pump, and the control cabinet is electrically connected to the first oil pump and the second oil pump; a plurality of slide rail groups are arranged along the length direction of the upper end surface of the box body, and the first jack and the second jack are symmetrically arranged on the plurality of slide rail groups, the first jack is connected to the first oil pump through an oil pipe, and the output end of the first jack is fixedly provided with a first clamp; the second jack is connected to the second oil pump through an oil pipe, and the output end of the second jack is fixedly provided with a second clamp. The prestressed intelligent tensioning device has a simple structure, can realize different tensile stresses on the same device, improve the use range and service life of the tensioning device, facilitate people's construction, and improve construction efficiency.

[0004] In the above patent, only the first clamp and the second clamp are generally described without a specific structural shape. After the existing clamp is clamped and fixed to the steel bar, as the tension applied by the jack on the clamp becomes greater and greater, the clamp is easy to slip off the steel bar, causing tensioning failure. Based on this, the present application proposes a bridge prestressed intelligent tensioning device to solve the above problem. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a bridge prestressed intelligent tensioning device, which effectively solves the deficiencies of the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a bridge prestressed intelligent tensioning device, including a base, first sliding grooves are opened on both sides of the top surface of the base, and movable seats that can move back and forth are installed inside the two first sliding grooves, and pressure testing equipment is installed on the outer sides of the inner walls of the two first sliding grooves, and two pressure plates are installed on the opposite sides of the two movable seats, and their positions correspond to the positions of the pressure testing equipment, and four circular arrays of clamping rods are installed above the sides where the two movable seats are close to each other, and movable frames that can move back and forth are installed on the sides where the two movable seats are close to each other, and the two movable frames are respectively sleeved on the outside of two groups of clamping rods, and the two are overlapped, and cylinders are installed on the outer ends of the two groups of clamping rods, and the outsides of the two groups of cylinders are convex to form convex strips, and balls are rotatably installed around the inner walls of the two movable frames, which roll along the outer surfaces of the two groups of clamping rods respectively.

[0007] Preferably, in any of the above schemes, the two first sliding grooves are internally installed with a first threaded rod driven by the first motor to rotate, which passes through the two moving seats respectively and the two are threadedly matched, and guide rods are installed on both sides of the two first sliding grooves, which pass through the moving seats respectively and the two are slidably matched, and the guide rods can limit the moving seat to prevent it from shaking so that it can only move back and forth.

[0008] Preferably, any of the above schemes is that springs are sleeved on the outside of the two groups of guide rods, and the four pressure plates are respectively installed on the outer ends of the four springs.

[0009] Preferably, any of the above schemes has four circular array mounting grooves on the upper side of the outer sides of the two movable seats, and the two groups of clamping rods are rotatably mounted in the two groups of mounting grooves respectively.

[0010] Preferably, any of the above schemes has a card slot on one side of the inner wall of the two groups of mounting grooves, and a spring plate is installed inside the two groups of card slots. The multiple spring plates are bow-shaped, and their outer surfaces overlap with the outer surfaces of multiple clamping rods respectively. By using this scheme, the rotation and resetting of the clamping rod can be realized.

[0011] Preferably, any of the above schemes is that a guide frame is installed on the upper side of the two movable seats close to the outer surface, and a second threaded rod driven to rotate by a second motor is installed inside the two guide frames. An assembly rod is installed on the upper side of the outer surface of the two movable frames, which is respectively installed in the two guide rods and threadedly cooperates with the second threaded rod. By using this scheme, the reciprocating movement of the movable frame can be realized.

[0012] Preferably, any of the above schemes has a second sliding groove on one side of the outer surface of the eight clamping rods, and ball grooves are provided around the inner walls of the two movable frames, and the multiple balls are rotatably installed in the ball grooves, and the multiple balls are respectively rollingly matched with the second sliding grooves.

[0013] The utility model has the following advantages:

[0014] 1. The bridge prestressed intelligent tensioning equipment places the test block between two moving seats. Four circular array clamping rods are rotatably installed on one side of the outside of the two moving seats. A moving frame is slidably installed on the outside of the two groups of clamping rods. By adjusting the position of the moving frame, one group of clamping rods can be clamped inward, thereby preventing the test block from loosening and affecting the test effect.

[0015] Among them, sliding grooves are opened on the outside of the four clamping rods, and balls are rotatably installed around the inner wall of the moving frame. The balls roll along the sliding grooves, which can reduce the wear between the two and limit the position of the clamping rod to prevent it from jumping.

[0016] Among them, cylinders are installed at the outer ends of multiple clamping rods, and the exteriors of multiple cylinders are convex to form multiple convex strips in a circumferential array, thereby increasing the friction between the test block and the test block to prevent the test block from sliding.

[0017] Among them, a plurality of spring plates in a circular array are installed on one side of the outer side of the moving seat. The spring plates are in a bow shape and are respectively located under a plurality of clamping rods to provide elastic force for the movement of the clamping rods so that the clamping rods can be reset.

[0018] 2. The bridge prestressed intelligent tensioning equipment has two moving seats installed in the first sliding grooves on both sides of the top surface of the base. A pressure testing device is installed on one side of the inner wall of the first sliding groove. A spring is installed on the rear side of the moving seat, and a pressure plate is installed on the outer end. When the moving seat moves backward, the pressure plate can squeeze the pressure testing device, which can facilitate the collection of pressure test values. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 For the utility model Figure 1 Schematic diagram of the internal structure;

[0021] Figure 3 It is a structural schematic diagram of the base in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the mobile seat in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the mobile frame in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the clamping rod in the utility model.

[0025] In the figure: 1-base, 2-moving seat, 3-second motor, 4-clamping rod, 5-moving frame, 6-pressure testing equipment, 7-guide rod, 8-first motor, 9-pressure plate, 10-spring, 11-spring plate, 12-ball, 13-first sliding groove, 14-guide frame, 15-installing groove, 16-card slot, 17-ball slot, 18-assembly rod, 19-second sliding groove, 20-cylinder, 21-convex strip. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0027] like Figures 1 to 6 As shown, a bridge prestressed intelligent tensioning equipment includes a base 1, first sliding grooves 13 are opened on both sides of the top surface of the base 1, and reciprocating movable seats 2 are installed inside the two first sliding grooves 13, and pressure testing equipment 6 is installed on the outer sides of the inner walls of the two first sliding grooves 13. Two pressure plates 9 are installed on the opposite sides of the two movable seats 2, and their positions correspond to the positions of the pressure testing equipment 6. Four circular arrays of clamping rods 4 are installed above the side where the two movable seats 2 are close to each other, and reciprocating movable frames 5 are installed on the side where the two movable seats 2 are close to each other. The two movable frames 5 are respectively sleeved on the outside of the two groups of clamping rods 4, and the two are overlapped. Cylinders 20 are installed on the outer ends of the two groups of clamping rods 4, and the outsides of the two groups of cylinders 20 are convex to form convex strips 21. Balls 12 are rotatably installed around the inner walls of the two movable frames 5, and they roll along the outer surfaces of the two groups of clamping rods 4 respectively.

[0028] The two first sliding grooves 13 are each installed with a first threaded rod driven by the first motor 8 to rotate, which passes through the two moving seats 2 respectively, and the two are threadedly matched. Guide rods 7 are installed on both sides of the two first sliding grooves 13, which pass through the moving seats 2 respectively, and the two are slidably matched. As an optional technical solution of the utility model, in order to ensure the smooth movement of the moving seat 2, lubricating material can be applied to the outside of the guide rod 7 to reduce the friction resistance between the components, and the guide rod 7 can be assembled in a plug-in manner to facilitate its installation and disassembly.

[0029] The outside of the two sets of guide rods 7 are both covered with springs 10, and four pressure plates 9 are respectively installed on the outer ends of the four springs 10. As an optional technical solution of the utility model, the pressure plate 9 can press the pressure testing equipment 6 to measure the applied pressure. In actual applications, the spring 10 can be replaced with a rod to ensure the accuracy of the measurement.

[0030] Four mounting grooves 15 in a circumferential array are provided on the upper side of the outer sides of the two movable seats 2 , and the two groups of clamping rods 4 are rotatably mounted in the two groups of mounting grooves 15 .

[0031] A card slot 16 is provided on one side of the inner wall of the two groups of mounting grooves 15, and a spring plate 11 is installed inside. The multiple spring plates 11 are all bow-shaped, and their outer surfaces are overlapped with the outer surfaces of the multiple clamping rods 4 respectively. As an optional technical solution of the utility model, the size of the spring plate 11 can be slightly larger than the size of the card slot 16, so as to facilitate the installation and disassembly of the spring plate 11, and ensure that the spring plate 11 is firmly installed.

[0032] A guide frame 14 is installed on the upper side of the two moving seats 2 close to the outer surface, and a second threaded rod driven by the second motor 3 is installed inside the two guide frames 14. An assembly rod 18 is installed on the upper side of the outer surface of the two moving frames 5, which is respectively installed in the two guide rods 14 and threadedly matched with the second threaded rod. As an optional technical solution of the utility model, the size of the assembly rod 18 is adapted to the size of the guide frame 14 to achieve the purpose of limiting the assembly rod 18 so that it can only move back and forth.

[0033] A second sliding groove 19 is provided on one side of the outer surface of the eight clamping rods 4, and ball grooves 17 are provided around the inner walls of the two moving frames 5. A plurality of balls 12 are rotatably installed in the ball grooves 17, and the plurality of balls 12 respectively roll with the second sliding grooves 19. As an optional technical solution of the present invention, after the balls 12 roll along the ball grooves 17, the movement of the moving frame 5 can be limited, and the wear between the two components can be reduced.

[0034] The features, assembly methods, use processes and functions realized by each component of the utility model are as follows: the test block is placed between two moving seats 2, and four clamping rods 4 in a circular array are rotatably installed on one side of the outside of the two moving seats 2. A moving frame 5 is slidably installed on the outside of the two groups of clamping rods 4. By adjusting the position of the moving frame 5, a group of clamping rods 4 can be clamped inward, thereby preventing the test block from loosening and affecting the test effect. Sliding grooves 19 are opened on the outside of the four clamping rods 4, and balls 12 are rotatably installed around the inner wall of the moving frame 5. The balls 12 roll along the sliding grooves 19 to reduce the wear between the two and limit the position of the clamping rod 4 to prevent it from jumping. Cylinder 20, the outside of multiple cylinders 20 are all convex to form multiple convex strips 21 in a circular array, which increase the friction between the test block and the test block to prevent the test block from sliding. Multiple spring plates 11 in a circular array are installed on one side of the outside of the moving seat 2. They are bow-shaped and are respectively located under multiple clamping rods 4 to provide elastic force for the movement of the clamping rods 4 so that they can be reset. The two moving seats 2 are installed in the first sliding grooves 13 on both sides of the top surface of the base 1. A pressure testing device 6 is installed on one side of the inner wall of the first sliding groove 13. A spring 10 is installed on the rear side of the moving seat 2, and a pressure plate 9 is installed on its outer end. When the moving seat 2 moves backward, the pressure plate 9 can squeeze the pressure testing device 6, which can facilitate the collection of pressure test values.

[0035] 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 bridge prestressed intelligent tensioning device, characterized in that: The invention comprises a base (1), wherein first sliding grooves (13) are provided on both sides of the top surface of the base (1), and movable seats (2) capable of reciprocating movement are installed inside the two first sliding grooves (13), and pressure testing equipment (6) is installed on the outer sides of the inner walls of the two first sliding grooves (13), and two pressing plates (9) are installed on the opposite sides of the two movable seats (2), and the positions of the pressing plates correspond to the positions of the pressure testing equipment (6), and four pressing plates (9) are installed above the adjacent sides of the two movable seats (2). The clamping rods (4) are arranged in a circular array. A reciprocating movable frame (5) is installed on the adjacent side of the two movable seats (2). The two movable frames (5) are respectively sleeved on the outside of the two groups of clamping rods (4) and the two are overlapped. Cylinders (20) are installed on the outer ends of the two groups of clamping rods (4). The outer sides of the two groups of cylinders (20) are convex to form convex strips (21). Balls (12) are rotatably installed around the inner walls of the two movable frames (5) and roll along the outer surfaces of the two groups of clamping rods (4).

2. The intelligent prestressing tensioning device for bridges according to claim 1 is characterized in that: The two first sliding grooves (13) are each internally provided with a first threaded rod driven to rotate by a first motor (8), which respectively penetrates through the two moving seats (2), and the two are threadedly matched. The two first sliding grooves (13) are each internally provided with a guide rod (7), which respectively penetrates through the moving seats (2), and the two are slidably matched.

3. The intelligent prestressed tensioning device for bridges according to claim 2 is characterized in that: The outsides of the two groups of guide rods (7) are both covered with springs (10), and the four pressing plates (9) are respectively installed on the outer ends of the four springs (10).

4. The intelligent prestressing tensioning device for bridges according to claim 3 is characterized in that: Four circular array mounting grooves (15) are provided on the upper side of the outer side of the two movable seats (2), and the two groups of clamping rods (4) are rotatably mounted in the two groups of mounting grooves (15) respectively.

5. The intelligent prestressed tensioning device for bridges according to claim 4 is characterized in that: A clamping groove (16) is provided on one side of the inner wall of the two groups of installation grooves (15), and a spring plate (11) is installed inside the spring plates (11). The spring plates (11) are all in a bow shape, and their outer surfaces overlap with the outer surfaces of the clamping rods (4) respectively.

6. The intelligent prestressed tensioning device for bridges according to claim 5, characterized in that: A guide frame (14) is installed above one side of the two movable seats (2) close to the outer surface, and a second threaded rod driven to rotate by a second motor (3) is installed inside the two guide frames (14). An assembly rod (18) is installed above one side of the outer surface of the two movable frames (5), which is respectively installed in the two guide rods (14) and threadedly matched with the second threaded rod.

7. The intelligent prestressing tensioning device for bridges according to claim 6 is characterized in that: A second sliding groove (19) is provided on one side of the outer surface of the eight clamping rods (4), and a ball groove (17) is provided around the inner wall of the two movable frames (5). The plurality of balls (12) are rotatably installed in the ball grooves (17), and the plurality of balls (12) are respectively rollingly matched with the second sliding grooves (19).

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