A prestressed tendon directional tensioning device for bridge construction

Abstract

The utility model discloses a directional tensioning device for prestressed tendons for bridge construction, including a box frame, two slide rails are installed on the outer wall of one side of the box frame by bolts, and a shell is slidably connected between the two slide rails, a cylinder sleeve is arranged inside the shell, and cylinder barrel assemblies are arranged at both ends of the cylinder sleeve, a groove is opened on the outer wall of one side of the box frame, and a screw rod is installed inside the groove by a bearing, and a connecting seat is threadedly connected to the outer thread of the screw rod, and the connecting seat is fixedly connected to the shell by bolts. When the utility model tensions the steel bar, the driving motor can be operated to start, so that the screw rod slides with the connecting seat inside the groove, and the connecting seat slides with the shell on the slide rail, so that the height of the structure formed by the cylinder sleeve and the cylinder barrel assembly changes, so that the height of the cylinder barrel is the same as the height of the tensioned steel bar, so as to meet the subsequent tensioning of the steel bar, and the process is simple to operate, convenient for single-person operation, and suitable for tensioning steel bars in narrow spaces.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a prestressed tendon directional tensioning device for bridge construction. Background Art

[0002] Bridge construction is the process of building a bridge according to the design content, which mainly refers to bridge construction technology and construction organization, construction management, construction quality and other contents. In the process of bridge construction, prestressed tendon tensioning devices are needed to tension the prestressed tendons.

[0003] For example, a prestressed tendon tensioning device with application number CN202011559913.9 and authorization announcement date 20220517 relates to the field of prestressed tendon tensioning, which includes a tensioning device and an anchor assembly, the anchor assembly includes an outer card seat, two inner card seats and an abutment seat, the outer card seat is penetrated with a mounting hole, the side wall of the inner card seat is penetrated with a half hole, when the side walls of the two inner card seats with half holes are in contact, the two half holes are combined to form an abutment hole, the outer wall of the inner card seat is in contact with the inner wall of the mounting hole, the outer wall of the abutment seat is in abutment with the inner wall of the abutment hole, the inner wall of the half hole is penetrated with a plurality of threading grooves, the threading grooves are used for steel strands to pass through, and the steel strands are clamped between the inner card seat and the abutment seat. This application has the effect of facilitating the installation of the anchor assembly and the steel strand.

[0004] When using a prestressed tendon tensioning device to tension the prestressed tendons, it is necessary to use a crane to lift the prestressed tendon tensioning device and then fix it together with the steel bars. However, this method is not suitable for narrow spaces, and the tensioning device needs to be manually supported when the crane is hoisting, which makes the operation difficult. Therefore, it is urgent to design a prestressed tendon directional tensioning device for bridge construction to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a prestressed tendon directional tensioning device for bridge construction to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prestressed tendon directional tensioning device for bridge construction, comprising a box frame, two slide rails are installed on the outer wall of one side of the box frame by bolts, and a shell is slidably connected between the two slide rails, a cylinder sleeve is provided inside the shell, and cylinder barrel assemblies are provided at both ends of the cylinder sleeve, a groove is opened on the outer wall of one side of the box frame, and a screw rod is installed inside the groove by a bearing, a connecting seat is connected to the outer thread of the screw rod, and the connecting seat is fixedly connected to the shell by bolts, a driving motor is installed on the outer wall of one side of the top of the box frame by bolts, and the output end of the driving motor is fixedly connected to the top end of the screw rod by a flat key.

[0008] Furthermore, two universal wheels are installed on the outer walls on both sides of the bottom of the box frame by bolts, and a storage area is opened on the outer wall of one side of the box frame, and a plurality of support plates are installed inside the storage area by bolts.

[0009] Furthermore, a box door is installed on one side of the inner wall of the storage area through a hinge, and a power module is provided on one side of the bottom of the inner wall of the storage area, and the power module is electrically connected to the driving motor through a wire.

[0010] Furthermore, the cylinder assembly comprises a cylinder, and four placement grooves are arranged on the inner wall of the side of the cylinder, and the inside of the placement groove is slidably connected with an extrusion block.

[0011] Furthermore, a spring is installed on the outer wall of one side of the extrusion block through bolts, and the other end of the spring is fixed to one side of the inner wall of the placement groove.

[0012] Furthermore, four storage areas are provided inside the cylinder barrel, and the storage areas and the placement grooves are staggered, the storage areas and the placement grooves are interconnected, and the storage areas and the placement grooves are filled with hydraulic oil.

[0013] Furthermore, four adjusting bolts are installed at one end of the cylinder through a bearing, and the outer threads of the adjusting bolts are connected to an extrusion plate, and the extrusion plate is slidably connected inside the storage area.

[0014] In the above technical scheme, the utility model provides a prestressed tendon directional tensioning device for bridge construction, which has the following beneficial effects:

[0015] (1) By setting up a driving motor, a screw rod, a connecting seat and a slide rail, when it is necessary to lift the shell to tension the steel bar, the driving motor can be operated to start, so that the screw rod and the connecting seat slide inside the groove, and the connecting seat and the shell slide on the slide rail, so that the structural height of the cylinder sleeve and the cylinder barrel assembly changes, so that the height of the cylinder barrel is the same as the height of the tensioned steel bar to meet the subsequent tensioning of the steel bar. The process is simple to operate, convenient for single-person operation, and suitable for tensioning steel bars in narrow spaces.

[0016] (2) By setting the adjusting bolt, extrusion plate and extrusion block, when the device is used to tension the steel bar, the adjusting bolt can be rotated by a tool, so that the extrusion plate squeezes the hydraulic oil inside the storage area, so that the hydraulic oil pushes the extrusion block to slide inside the placement groove, so that the extrusion block clamps the auxiliary tool placed on one end of the cylinder, so that the space size at one end of the cylinder assembly can be adjusted to meet the clamping and fixation of different auxiliary tools.

[0017] (3) By setting up universal wheels and box frames, the box frames and universal wheels can form a mobile trolley structure, so that the tensioning device can walk on the ground, which greatly reduces the difficulty of carrying the device and makes it convenient for workers to carry the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The utility model provides an overall structural schematic diagram of a prestressed tendon directional tensioning device for bridge construction according to an embodiment of the present invention.

[0020] Figure 2 The present invention is a schematic diagram of a box frame structure provided in an embodiment of a prestressed tendon directional tensioning device for bridge construction according to the present invention.

[0021] Figure 3 The present invention is a schematic structural diagram of a cylinder assembly provided in an embodiment of a prestressed tendon directional tensioning device for bridge construction according to the utility model.

[0022] Figure 4 The present invention is a schematic diagram of the side structure of a cylinder assembly provided in an embodiment of a prestressed tendon directional tensioning device for bridge construction according to the utility model.

[0023] Description of reference numerals:

[0024] 1. Box frame; 2. Universal wheel; 3. Shell; 4. Cylinder sleeve; 5. Cylinder assembly; 6. Slide rail; 7. Groove; 8. Drive motor; 9. Storage area; 10. Box door; 11. Support plate; 12. Power module; 13. Screw rod; 14. Connecting seat; 15. Cylinder; 16. Mounting groove; 17. Extrusion block; 18. Spring; 19. Adjusting bolt; 20. Extrusion plate; 21. Hydraulic oil; 22. Storage area. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] like Figure 1-4As shown, a prestressed tendon directional tensioning device for bridge construction provided by an embodiment of the utility model includes a box frame 1, two slide rails 6 are installed on the outer wall of one side of the box frame 1 by bolts, and a shell 3 is slidably connected between the two slide rails 6, a cylinder sleeve 4 is provided inside the shell 3, and cylinder barrel assemblies 5 are provided at both ends of the cylinder sleeve 4, a groove 7 is opened on the outer wall of one side of the box frame 1, and a screw rod 13 is installed inside the groove 7 through a bearing, and a connecting seat 14 is connected to the outer thread of the screw rod 13, and the connecting seat 14 is fixedly connected to the shell 3 by bolts, and a driving motor 8 is installed on the outer wall of one side of the top of the box frame 1 by bolts, and the output end of the driving motor 8 is fixedly connected to the top of the screw rod 13 by a flat key.

[0027] Specifically, in this embodiment, it includes a box frame 1, and two slide rails 6 are installed on the outer wall of one side of the box frame 1 by bolts. The slide rails 6 can guide the movement of the shell 3, and the shell 3 is slidably connected between the two slide rails 6. A cylinder sleeve 4 is provided inside the shell 3, and cylinder barrel assemblies 5 are provided at both ends of the cylinder sleeve 4. A groove 7 is opened on the outer wall of one side of the box frame 1, and a screw rod 13 is installed inside the groove 7 through a bearing. The outer thread of the screw rod 13 is connected to a connecting seat 14, and the connecting seat 14 is fixedly connected to the shell 3 by bolts. A driving motor 8 is installed on the outer wall of one side of the top of the box frame 1 by bolts. The model of the driving motor 8 is preferably 42BLF02. When the driving motor 8 is started, the screw rod 13 slides with the connecting seat 14 in the groove 7, and the connecting seat 14 slides with the shell 3 on the slide rail 6, so that the height of the structure formed by the cylinder sleeve 4 and the cylinder barrel assembly 5 changes, so that the height of the cylinder barrel 15 is the same as the height of the tensioned steel bar to meet the subsequent tensioning of the steel bar, and the output end of the driving motor 8 is fixedly connected to the top of the screw rod 13 through a flat key.

[0028] The utility model provides a prestressed tendon directional tensioning device for bridge construction. When it is necessary to lift the shell 3 to tension the steel bars, the drive motor 8 can be operated to start, so that the screw rod 13 slides with the connecting seat 14 in the groove 7, and the connecting seat 14 slides with the shell 3 on the slide rail 6, so that the structural height formed by the cylinder sleeve 4 and the cylinder barrel assembly 5 is changed, so that the height of the cylinder barrel 15 is the same as the height of the tensioned steel bars to meet the subsequent tensioning of the steel bars. The process is simple to operate, convenient for single-person operation, and suitable for tensioning steel bars in narrow spaces.

[0029] In one embodiment provided by the present utility model, Figure 1-2As shown, two universal wheels 2 are installed on the outer walls on both sides of the bottom of the box frame 1 by bolts. The box frame 1 and the universal wheels 2 can form a mobile trolley structure, so that the tensioning device can walk on the ground, which greatly reduces the difficulty of carrying the device and is convenient for workers to carry the device. A storage area 9 is opened on the outer wall of one side of the box frame 1, and a plurality of support plates 11 are installed inside the storage area 9 by bolts. A box door 10 is installed on one side of the inner wall of the storage area 9 by hinges. A power module 12 is provided on one side of the bottom of the inner wall of the storage area 9. The power module 12 is composed of a battery with a switch, which can supply power to the drive motor 8, and the power module 12 is electrically connected to the drive motor 8 through a wire.

[0030] In another embodiment provided by the present utility model, Figure 4 As shown, the cylinder assembly 5 includes a cylinder 15, and four placement grooves 16 are provided on the inner wall of the side of the cylinder 15, and an extrusion block 17 is slidably connected inside the placement groove 16, and a spring 18 is installed on the outer wall of one side of the extrusion block 17 through a bolt. When the extrusion plate 20 returns to the original position, under the elastic force of the spring 18, the extrusion block 17 can be retracted into the placement groove 16, and the other end of the spring 18 is fixed to one side of the inner wall of the placement groove 16. Four storage areas 22 are provided inside the cylinder 15, and the storage areas 22 are staggered with the placement grooves 16, and the storage areas 22 and the placement grooves 16 are mutually The storage area 22 and the placement groove 16 are filled with hydraulic oil 21. Four adjusting bolts 19 are installed at one end of the cylinder 15 through bearings, and the external thread of the adjusting bolts 19 is connected to the extrusion plate 20. The adjusting bolts 19 are rotated by tools to make the extrusion plate 20 squeeze the hydraulic oil 21 in the storage area 22, so that the hydraulic oil 21 pushes the extrusion block 17 to slide in the placement groove 16, so that the extrusion block 17 clamps the auxiliary tool placed on one end of the cylinder 15, so as to meet the clamping and fixation of different auxiliary tools. The extrusion plate 20 is slidably connected inside the storage area 22.

[0031] Example 1

[0032] A prestressed tendon directional tensioning device for bridge construction, comprising a box frame 1, wherein two slide rails 6 are installed on the outer wall of one side of the box frame 1 by bolts, the slide rails 6 can guide the movement of the shell 3, and the shell 3 is slidably connected between the two slide rails 6, a cylinder sleeve 4 is arranged inside the shell 3, and cylinder barrel assemblies 5 are arranged at both ends of the cylinder sleeve 4, a groove 7 is opened on the outer wall of one side of the box frame 1, and a screw rod 13 is installed inside the groove 7 through a bearing, and a connecting seat 14 is connected to the outer thread of the screw rod 13, and the connecting seat 14 is fixedly connected to the shell 3 by bolts, and a driving motor 8 is installed on the outer wall of one side of the top of the box frame 1 by bolts, and the driving motor 8 is preferably 42BLF02. When the driving motor 8 is started, the screw rod 13 slides with the connecting seat 14 in the groove 7, and the connecting seat 14 slides with the shell 3 on the slide rail 6, so that the height of the structure formed by the cylinder sleeve 4 and the cylinder barrel assembly 5 changes, so that the height of the cylinder barrel 15 is the same as the height of the tensioned steel bar, so as to meet the subsequent tensioning of the steel bar, and the output end of the driving motor 8 is fixedly connected to the top of the screw rod 13 by a flat key.

[0033] Example 2

[0034] This embodiment is further limited on the basis of embodiment 1, wherein two universal wheels 2 are installed on the outer walls on both sides of the bottom of the box frame 1 by bolts. The box frame 1 and the universal wheels 2 can form a mobile trolley structure, so that the tensioning device can walk on the ground, which greatly reduces the difficulty of carrying the device and is convenient for workers to carry the device. A storage area 9 is opened on the outer wall of one side of the box frame 1, and a plurality of support plates 11 are installed inside the storage area 9 by bolts. A box door 10 is installed on one side of the inner wall of the storage area 9 by hinges. A power module 12 is provided on one side of the bottom of the inner wall of the storage area 9. The power module 12 is composed of a battery with a switch, which can supply power to the drive motor 8, and the power module 12 is electrically connected to the drive motor 8 through a wire; the cylinder assembly 5 includes a cylinder 15, and four mounting grooves 16 are provided on the inner wall of the side of the cylinder 15, and an extrusion block 17 is slidably connected inside the mounting groove 16, and the outer wall of one side of the extrusion block 17 is installed by bolts There is a spring 18. When the extrusion plate 20 returns to its original position, under the elastic force of the spring 18, the extrusion block 17 can retract into the placement groove 16, and the other end of the spring 18 is fixed to one side of the inner wall of the placement groove 16. Four storage areas 22 are arranged inside the cylinder 15, and the storage areas 22 are staggered with the placement groove 16. The storage areas 22 and the placement groove 16 are interconnected. The storage areas 22 and the placement groove 16 are filled with hydraulic oil 21. Four adjusting bolts 19 are installed at one end of the cylinder 15 through bearings, and the external thread of the adjusting bolts 19 is connected to the extrusion plate 20. The adjusting bolts 19 are rotated by a tool, so that the extrusion plate 20 squeezes the hydraulic oil 21 inside the storage area 22, so that the hydraulic oil 21 pushes the extrusion block 17 to slide inside the placement groove 16, so that the extrusion block 17 clamps the auxiliary tool placed on one end of the cylinder 15, so as to meet the clamping and fixation of different auxiliary tools, and the extrusion plate 20 is slidably connected inside the storage area 22.

[0035] Working principle: When tensioning the steel bars, an auxiliary component can be put on a plurality of steel bars first, and then the box frame 1 can be pushed to move so that the box frame 1 is close to the steel bars. Then the worker can pass the steel bars through the cylinder assembly 5 so that the steel bars are exposed from another cylinder assembly 5. At the same time, during this process, the drive motor 8 can be operated to start, so that the screw rod 13 slides with the connecting seat 14 inside the groove 7, and the connecting seat 14 slides with the housing 3 on the slide rail 6, so that the height of the structure formed by the cylinder sleeve 4 and the cylinder assembly 5 is changed to meet the tensioning of the steel bars. The process is simple to operate and is convenient for single-person operation. It is also suitable for tensioning steel bars in narrow spaces, and subsequent work People can use tools to rotate the adjusting bolt 19 so that the extrusion plate 20 squeezes the hydraulic oil 21 inside the storage area 22, so that the hydraulic oil 21 pushes the extrusion block 17 to slide inside the placement groove 16, so that the extrusion block 17 clamps the auxiliary tool placed on one end of the cylinder 15, so as to meet the clamping and fixation of different auxiliary tools. Subsequently, the above operation is repeated to put another auxiliary tool on the other cylinder 15, and the adjusting bolt 19 is rotated to align the centers of the two auxiliary tools installed on the cylinder assembly 5. After that, the external hydraulic pump station can be operated to start the hydraulic cylinder structure composed of the cylinder sleeve 4 and the cylinder assembly 5 to realize the tensioning of the steel bars.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A prestressed tendon directional tensioning device for bridge construction, comprising a box frame (1), characterized in that: Two slide rails (6) are installed on the outer wall of one side of the box frame (1) by bolts, and a shell (3) is slidably connected between the two slide rails (6), a cylinder sleeve (4) is provided inside the shell (3), and cylinder barrel assemblies (5) are provided at both ends of the cylinder sleeve (4), a groove (7) is opened on the outer wall of one side of the box frame (1), and a screw rod (13) is installed inside the groove (7) through a bearing, the screw rod (13) is externally threadedly connected to a connecting seat (14), and the connecting seat (14) is fixedly connected to the shell (3) by bolts, and a driving motor (8) is installed on the outer wall of one side of the top of the box frame (1) by bolts, and the output end of the driving motor (8) is fixedly connected to the top of the screw rod (13) by a flat key.

2. A prestressed tendon directional tensioning device for bridge construction according to claim 1, characterized in that: Two universal wheels (2) are installed on both sides of the outer wall at the bottom of the box frame (1) by means of bolts. A storage area (9) is provided on one side of the outer wall of the box frame (1), and a plurality of support plates (11) are installed inside the storage area (9) by means of bolts.

3. A prestressed tendon directional tensioning device for bridge construction according to claim 2, characterized in that: A box door (10) is installed on one side of the inner wall of the storage area (9) via a hinge, and a power module (12) is provided on one side of the bottom of the inner wall of the storage area (9), and the power module (12) is electrically connected to the drive motor (8) via a wire.

4. The prestressed tendon directional tensioning device for bridge construction according to claim 1, characterized in that: The cylinder assembly (5) comprises a cylinder (15), and four placement grooves (16) are provided on the inner wall of the side of the cylinder (15), and an extrusion block (17) is slidably connected inside the placement groove (16).

5. A prestressed tendon directional tensioning device for bridge construction according to claim 4, characterized in that: A spring (18) is installed on the outer wall of one side of the extrusion block (17) via bolts, and the other end of the spring (18) is fixed to one side of the inner wall of the placement groove (16).

6. A prestressed tendon directional tensioning device for bridge construction according to claim 4, characterized in that: Four storage areas (22) are arranged inside the cylinder barrel (15), and the storage areas (22) and the placement grooves (16) are arranged in a staggered manner. The storage areas (22) and the placement grooves (16) are interconnected, and the storage areas (22) and the placement grooves (16) are filled with hydraulic oil (21).

7. A prestressed tendon directional tensioning device for bridge construction according to claim 6, characterized in that: Four adjusting bolts (19) are installed at one end of the cylinder (15) through a bearing, and the outer surface of the adjusting bolts (19) is threadedly connected to an extrusion plate (20), and the extrusion plate (20) is slidably connected inside the storage area (22).

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