Prefabricated prestressed beam tensioning auxiliary device

Abstract

The utility model discloses a prefabricated prestressed beam tension auxiliary device, which comprises a support unit, a plurality of support columns, a top frame and moving wheels, the support columns are erected on two sides of the top frame, and the moving wheels are mounted at the bottoms of the frame columns. Guide rail sliding grooves are formed in the opposite faces of the two sides, corresponding to the frame columns, of the top frame. The hoisting unit comprises an adjustable cross beam, an adjustable longitudinal beam and a pulley block, the two ends of the adjustable cross beam are installed in the guide rail sliding grooves in a sliding mode, the two ends of the adjustable longitudinal beam are installed on the adjustable cross beam in a sliding mode, and the pulley block is installed on the adjustable longitudinal beam and used for hoisting a tensioning jack. The device can assist the tensioning jack in installation, so that the prestressed tensioning of the precast beam is safe and efficient, the device can be repeatedly used and is easy to install, and the construction cost is saved.

Description

Technical Field

[0001] The utility model relates to a prefabricated prestressed beam tensioning auxiliary device, belonging to the technical field of prefabricated prestressed beam tensioning tools. Background Art

[0002] In municipal engineering, bridges often use prefabricated prestressed box beams or T beams. In the production process, prestressing is an indispensable step in the construction process. Hydraulic jacks are often used for prestressing. The existing construction generally adopts manual installation or beam field cranes to cooperate with hoisting, and then prestressing is carried out. This method has low safety and low installation efficiency. It is necessary to study and improve this. Utility Model Content

[0003] Based on the above, the utility model provides a safe and efficient prefabricated prestressed beam tensioning auxiliary device to overcome the deficiencies of the prior art.

[0004] The technical solution of the utility model is: a prefabricated prestressed beam tensioning auxiliary device, comprising:

[0005] The support unit comprises a frame column, a top frame and moving wheels, wherein the frame column is mounted on both sides of the top frame, the moving wheels are installed on the bottom of the frame column, and guide rail grooves are provided on opposite surfaces of the top frame corresponding to the two sides of the frame column;

[0006] The hoisting unit comprises an adjustable crossbeam, an adjustable longitudinal beam and a pulley block. Both ends of the adjustable crossbeam can be slidably installed in the guide rail slide groove, and both ends of the adjustable longitudinal beam can be slidably installed on the adjustable crossbeam. The pulley block is installed on the adjustable longitudinal beam and is used for hoisting the tensioning jack.

[0007] In one example, a diagonal brace is provided between the frame columns located on the same side of the top frame, and a reinforcing member is connected between the frame columns and the top frame at positions corresponding to the front and rear ends of the top frame.

[0008] In one example, baffles are provided at the front and rear ends of the guide rail slide slot.

[0009] In one example, there are two adjustable cross beams, and sliding bearings are installed at the ends of the adjustable cross beams. There are two adjustable longitudinal beams, and slots are provided at the front and rear of the adjustable longitudinal beams. The slots are connected to the adjustable cross beams, and sliding wheels are provided on the inner top surfaces of the slots.

[0010] In one example, the pulley group includes a first bracket, a first large pulley, a first small pulley, a second bracket, a second large pulley, a second small pulley and a lifting rope, the first bracket is installed at the bottom of the middle section of the adjustable longitudinal beam, the first large pulley and the first small pulley are respectively installed at the upper and lower parts of the first bracket, the second bracket is arranged below the first bracket, the second large pulley and the second small pulley are respectively installed at the upper and lower parts of the second bracket, one end of the lifting rope is fixed to the bottom of the adjustable longitudinal beam, and the other end passes through the second large pulley, the first small pulley, the second small pulley and the first large pulley in sequence.

[0011] Beneficial effects of the utility model: Compared with the prior art, the utility model combines the frame column, the top frame, the moving wheel, the adjustable cross beam, the adjustable longitudinal beam and the pulley block into a tensioning auxiliary device, which can assist the tensioning jack in installation, so that the prefabricated beam prestressing is safe and efficient, and can be used repeatedly, easy to install, and save construction costs. In addition, the pulley block in the utility model is composed of a first bracket, a first large pulley, a first small pulley, a second bracket, a second large pulley, a second small pulley and a hoisting rope, which has the advantages of labor saving and convenient hoisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the overall schematic diagram of the prefabricated prestressed beam tensioning auxiliary device;

[0013] Figure 2 is a schematic diagram of a bracket unit;

[0014] Figure 3 is a schematic diagram of the hoisting unit;

[0015] Figure 4 It is a schematic diagram of the adjustable longitudinal beam and pulley assembly;

[0016] Figure 5 It is a bottom view of the adjustable longitudinal beam;

[0017] Description of reference numerals:

[0018] 10 bracket units

[0019] 11 frame column, 12 top frame, 13 moving wheel, 14 guide rail slide, 15 diagonal brace, 16 reinforcement member;

[0020] 20 Lifting Units

[0021] 21 adjustable cross beam, 22 adjustable longitudinal beam, 23 pulley block, 24 sliding bearing, 25 slot, 26 sliding wheel;

[0022] 231 first bracket, 232 first large pulley, 233 first small pulley, 234 second bracket, 235 second large pulley, 236 second small pulley, 237 lifting rope. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0024] See also Figures 1 to 5 In this embodiment, a prefabricated prestressed beam tensioning auxiliary device includes a bracket unit 10 and a hoisting unit 20.

[0025] The bracket unit 10 includes a frame column 11, a top frame 12 and a moving wheel 13. The frame columns 11 are erected on both sides of the top frame 12, and there are at least two frame columns 11 on each side, and a diagonal brace 15 is connected between the front and rear frame columns 11. A moving wheel 13 with a braking function is installed at the bottom of the frame column 11, and a reinforcing member 16 is connected at the position of the frame column 11 and the top frame 12 corresponding to the front and rear ends of the top frame 12, so that the frame column 11 can stably support the top frame 12. The top frame 12 is a square frame, and guide rail grooves 14 are opened on the opposite surfaces of the two sides of the top frame 12 corresponding to the frame columns 11, and baffles are installed at the front and rear ends of the guide rail grooves 14.

[0026] The hoisting unit 20 includes an adjustable crossbeam 21, an adjustable longitudinal beam 22 and a pulley block 23. Both ends of the adjustable crossbeam 21 extend into the guide rail slot 14 and are equipped with sliding bearings 24. The adjustable crossbeam 21 can move in the guide rail slot 14 through the sliding bearings 24 and is limited by baffles at the front and rear end points. There are two adjustable crossbeams 21 and adjustable longitudinal beams 22, and they are in the shape of square columns. The adjustable longitudinal beam 22 is provided with slots 25 at the front and rear, and the slots 25 are connected to the adjustable crossbeam 21, and a sliding wheel 26 is provided on the inner top surface of the slots 25, so that the adjustable longitudinal beam 22 can move relative to the adjustable crossbeam 21. The pulley block 23 includes a first bracket 231, a first large pulley 232, a first small pulley 233, a second bracket 234, a second large pulley 235, a second small pulley 236 and a lifting rope 237. The first bracket 231 is installed at the bottom of the middle section of the adjustable longitudinal beam 22, the first large pulley 232 and the first small pulley 233 are respectively installed at the upper and lower parts of the first bracket 231, the second bracket 234 is movably located below the first bracket 231, the second large pulley 235 and the second small pulley 236 are respectively installed at the upper and lower parts of the second bracket 234, one end of the lifting rope 237 is fixed to the bottom of the adjustable longitudinal beam 22, and the other end passes through the second large pulley 235, the first small pulley 233, the second small pulley 236 and the first large pulley 232 in sequence, and its free end is used for operation, and the second bracket 234 is used to suspend the tensioning jack.

[0027] The working principle of the above-mentioned prefabricated prestressed beam tensioning auxiliary device is as follows:

[0028] During prestressing, the support unit 10 is moved to the prefabricated prestressed box beam or T beam, so that the hoisting unit 20 is located above it, and then the hoisting rope 237 is held to adjust the position of the adjustable cross beam 21 and the adjustable longitudinal beam 22, so that the second support 234 is located directly above the tensioning jack to be installed, and then the tensioning jack is fixed on the second support 234, and then the hoisting rope 237 is pulled down, so that the tensioning jack can be gradually moved up, and finally the tensioning jack can be controlled to be installed. Compared with the prior art, the utility model combines the frame column 11, the top frame 12, the moving wheel 13, the adjustable cross beam 21, the adjustable longitudinal beam 22 and the pulley block 23 into a tensioning auxiliary device, which can assist the tensioning jack in installation, so that the prefabricated beam prestressing is safe and efficient, and can be repeatedly used, easy to install, and save construction costs. In addition, the pulley block 23 in the utility model is composed of a first bracket 231, a first large pulley 232, a first small pulley 233, a second bracket 234, a second large pulley 235, a second small pulley 236 and a lifting rope 237, which has the advantages of saving labor and convenient lifting. At the same time, multiple pulley blocks 23 can realize simultaneous installation of multiple points.

[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A prefabricated prestressed beam tensioning auxiliary device, characterized in that: include: The support unit (10) comprises a frame column (11), a top frame (12) and a moving wheel (13), wherein the frame column (11) is mounted on both sides of the top frame (12), the moving wheel (13) is installed on the bottom of the frame column (11), and guide rail grooves (14) are provided on opposite surfaces of the top frame (12) corresponding to the two sides of the frame column (11); The hoisting unit (20) comprises an adjustable crossbeam (21), an adjustable longitudinal beam (22) and a pulley block (23), wherein both ends of the adjustable crossbeam (21) are slidably mounted in the guide rail slide groove (14), both ends of the adjustable longitudinal beam (22) are slidably mounted on the adjustable crossbeam (21), and the pulley block (23) is mounted on the adjustable longitudinal beam (22), and is used for hoisting a tensioning jack.

2. The prefabricated prestressed beam tensioning auxiliary device according to claim 1, characterized in that: A diagonal brace (15) is provided between the frame columns (11) located on the same side of the top frame (12), and a reinforcing member (16) is connected between the frame columns (11) and the top frame (12) at positions corresponding to the front and rear ends of the top frame (12).

3. The prefabricated prestressed beam tensioning auxiliary device according to claim 1, characterized in that: Baffles are provided at the front and rear ends of the guide rail slide groove (14).

4. The prefabricated prestressed beam tensioning auxiliary device according to claim 1, characterized in that: There are two adjustable crossbeams (21), and sliding bearings (24) are installed at the ends of the adjustable crossbeams (21). There are two adjustable longitudinal beams (22), and the adjustable longitudinal beams (22) are provided with slots (25) at the front and rear. The slots (25) are connected to the adjustable crossbeams (21), and the inner top surfaces of the slots (25) are provided with sliding wheels (26).

5. The prefabricated prestressed beam tensioning auxiliary device according to claim 1, characterized in that: The pulley block (23) comprises a first bracket (231), a first large pulley (232), a first small pulley (233), a second bracket (234), a second large pulley (235), a second small pulley (236) and a hoisting rope (237). The first bracket (231) is mounted on the bottom of the middle section of the adjustable longitudinal beam (22). The first large pulley (232) and the first small pulley (233) are mounted on the upper and lower parts of the first bracket (231) respectively. The second bracket (234) is arranged below the first bracket (231). The second large pulley (235) and the second small pulley (236) are mounted on the upper and lower parts of the second bracket (234) respectively. One end of the hoisting rope (237) is fixed to the bottom of the adjustable longitudinal beam (22), and the other end passes through the second large pulley (235), the first small pulley (233), the second small pulley (236) and the first large pulley (232) in sequence.

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