Prefabricated T-beam tensioning end steel formwork

Abstract

The utility model discloses a prefabricated T-beam tensioning end steel formwork, which relates to the technical field of prefabricated T-beam tensioning end steel formworks and comprises a steel formwork body, a pipe fixing unit, a vibration unit and a power unit. A cover plate is installed at the front end of the steel formwork body, and a plurality of rotating cylinders are rotationally connected to the rear end of the interior of the steel formwork body. The pipe fixing unit comprises a hand-screwing bolt in threaded connection with the front end of the rotary drum, and a pipe extruding ball is mounted at the near-center end of the hand-screwing bolt; according to the utility model, when the rotary drum rotates, the rotary drum drives the penetrating lining pipe to rotate, and concrete poured on the lining pipe is buffered and redirected, so that the situation that the lining pipe and the rotary drum are pressed to rotate during continuous pouring of the concrete can be prevented, meanwhile, the buffering base plate continuously impacts the steel template main body to vibrate the steel template main body, and the vibrating steel template main body can improve the pouring uniformity; and meanwhile, after pouring is completed and the T-beam is formed, vibration is conducted when the steel formwork is dismantled, the steel formwork body attached to concrete can be separated more conveniently, and follow-up use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated T-beam tensioning end steel templates, in particular to a prefabricated T-beam tensioning end steel template. Background Art

[0002] As a commonly used structural form in bridge construction, prefabricated T-beams are widely used in modern bridge engineering due to their high construction efficiency and easy quality control. In actual engineering, the use of prefabricated T-beams also needs to be determined in combination with specific design requirements and construction conditions. The tensioning end of the prefabricated T-beam is a key part of prestressed construction, involving the tensioning and anchoring of prestressed tendons. The prefabricated T-beam tensioning end steel formwork is a steel formwork specially used for the tensioning end of the prefabricated T-beam. It is mainly used in the construction of bridges, tunnels, highways and other projects to make the tensioning end of prefabricated T-beams. In the T-beam, the main function of the liner pipe (also called prestressed pipe or corrugated pipe) is to provide protection for the prestressed steel bars or strands and reserve tensioning space.

[0003] In the prior art, a prefabricated T-beam end template disclosed in a patent with announcement number CN205474843U is mainly formed by processing a new mold into a groove-shaped structure, and arranging circular holes on both sides of the new mold with the groove-shaped structure, and pre-embedding six 30cm long Ф12 embedded steel bars at the position of the circular holes; so that the concrete at the lower part and both sides of the T-beam end can be cast and formed with the beam body at one time.

[0004] It is known from the technology in related fields that for the prefabricated T-beam tensioning end steel formwork, the position of the steel bars is difficult to determine when prefabrication is performed by directly fixing the embedded steel bars, and the tensioning effect is not stable enough. When prefabricating the T-beam, the inner lining pipe usually needs to be embedded, but when pouring concrete, the inner lining pipe needs to be rotated or pulled at intervals to prevent the inner lining pipe from being squeezed and deformed by the concrete, so as not to affect the passing effect of subsequent steel bars, etc. This is time-consuming, labor-intensive, and inconvenient to use. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated T-beam tensioning end steel template in order to solve the above problems.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A prefabricated T-beam tension end steel formwork, comprising a steel formwork body, a fixed pipe unit, a vibration unit and a power unit;

[0008] Steel formwork body: A cover plate is installed at the front end, and a plurality of rotating drums are rotatably connected to the rear end of the steel formwork body; the number of rotating drums corresponds to the number of groups of steel bars to be tensioned, and the cover plate at the front end of the steel formwork body can seal its front end.

[0009] The fixed pipe unit includes a hand-tightened bolt threadedly connected to the front end of the rotating drum, and a tube-squeezing ball is installed at the proximal end of the hand-tightened bolt, and the tube-squeezing ball is provided with an anti-slip protrusion. When prefabricating the T-beam, the liner pipe inserted into the T-beam first passes through the rotating drum located at the tensioning end, and by rotating the distal end of the hand-tightened bolt, the tube-squeezing ball at the proximal end of the hand-tightened bolt can press the inserted liner pipe, and the anti-slip protrusion on the tube-squeezing ball can improve the fixing effect of the liner pipe. When the rotating drum rotates, it can stably rotate with the inserted liner pipe, buffer and redirect the concrete poured on the liner pipe, etc.

[0010] The vibration unit includes an arc bar installed at the rear end of the rotating drum, an elastic box is installed at the inner rear end of the steel formwork body, a U-shaped block is slidably connected inside the elastic box, a buffer pad is installed at the long end of the U-shaped block, and a push block column is installed at the short end of the U-shaped block; during the rotation of the rotating drum, the front ends of several arc bars continuously contact the rear end of the push block column, and the rear end of the push block column slides on the arc surface of the arc bar, and when the push block column does not contact the arc bar after the U-shaped block moves forward, the elastic force of the elastic member can make the U-shaped block part move backward quickly, so that the buffer pad impacts the inner rear end of the steel formwork body, and the steel formwork body vibrates.

[0011] The power unit is installed on the drum and can provide a basis for the power of the rotation of the drum.

[0012] Furthermore, the vibration unit further comprises an elastic member with one end connected to the front end of the U-shaped block, and the other end of the elastic member is connected to the inner front end of the elastic box. When the U-shaped block moves forward, the elastic member is compressed to store force, and when the push block column does not contact the arc bar, the force stored by the elastic member can quickly push the U-shaped block backward to impact the inner rear end of the steel formwork body, thereby achieving continuous vibration.

[0013] Furthermore, the power unit includes a slave sprocket, a reduction motor is installed on one side of the inner part of the steel formwork body, a main sprocket is installed on the output shaft of the reduction motor, and the main sprocket is connected to the slave sprocket through a chain. When the reduction motor is working, the main sprocket rotates, and the chain can be used to rotate a number of slave sprockets, thereby rotating the corresponding rotating drum, providing a basis for power for work.

[0014] Furthermore, the arc strips are located on the circumference of the drum, and the elastic boxes are also located on the circumference of the drum. The number of arc strips is equal to the number of elastic boxes. During the rotation of the drum, the arc strips and the push block columns work intermittently one by one, so that uninterrupted vibration operation can be achieved.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] After the embedded liner pipe of the utility model passes through the rotating drum and is fixed, when the rotating drum rotates, it can stably rotate with the inserted liner pipe, buffer and redirect the concrete poured on the liner pipe, prevent the liner pipe from being compressed during continuous concrete pouring, causing the liner pipe to be deformed due to stress, etc., affecting the insertion of subsequent steel bars, etc., ensuring the stability of the subsequent tensioning work, and making the operation more stable. When the rotating drum rotates, a number of arc bars continuously cooperate with the push block column, the elastic member first accumulates force, and then the push block column does not contact the arc bar. The elastic member pushes the U-shaped block to move backward quickly, so that the buffer plate impacts the steel formwork body to vibrate. When pouring concrete, the vibrating steel formwork body can improve the uniformity of pouring, and the pouring efficiency is higher; at the same time, after the pouring is completed and the T-beam is formed, the steel formwork is removed and vibrated, which makes it more convenient to separate the steel formwork body adhered to the concrete, and it is more convenient for subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a prefabricated T-beam tensioning end steel formwork described in the utility model;

[0018] Figure 2 It is a schematic diagram of the structure inside the main body of the prefabricated T-beam tensioning end steel formwork described in the utility model;

[0019] Figure 3 It is a schematic structural diagram of the interior of a prefabricated T-beam tensioning end steel formwork elastic box described in the utility model.

[0020] The following are the descriptions of the reference numerals:

[0021] Steel formwork body; 2. Cover plate; 3. Rotating drum; 4. Hand-tightened bolts; 5. Tube squeezing ball; 6. Anti-slip protrusion; 7. Arc strip; 8. Elastic box; 9. U-shaped block; 10. Push block column; 11. Elastic part; 12. Follower sprocket; 13. Reducer motor; 14. Main sprocket; 15. Chain; 16. Buffer plate. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Example:

[0024] like Figure 1-Figure 3 As shown, a prefabricated T-beam tensioning end steel formwork comprises a steel formwork body 1, a fixed pipe unit, a vibration unit and a power unit;

[0025] A cover plate 2 is installed at the front end of the steel template body 1, and a plurality of rotating drums 3 are rotatably connected to the rear end of the steel template body 1; Figure 1 As shown, the number of rotating drums 3 corresponds to the number of groups of steel bars to be tensioned, and the cover plate 2 at the front end of the steel formwork body 1 can seal the front end thereof.

[0026] The fixed tube unit comprises a hand-tightening bolt 4 threadedly connected to the front end of the rotating drum 3, and a tube squeezing ball 5 is installed at the proximal end of the hand-tightening bolt 4, and an anti-slip protrusion 6 is provided on the tube squeezing ball 5; Figure 1-Figure 3 As shown, when prefabricating the T-beam, the lining pipe inserted into the T-beam first passes through the rotating drum 3 located at the tensioning end, and the inserted lining pipe can be compressed by rotating the distal end of the hand-tightening bolt 4 and the squeezing ball 5 at the proximal end of the hand-tightening bolt 4. The anti-slip protrusion 6 on the squeezing ball 5 can improve the fixing effect of the lining pipe. When the rotating drum 3 rotates, it can stably rotate with the inserted lining pipe, buffer and redirect the concrete poured on the lining pipe, etc., to prevent the lining pipe from being compressed during continuous pouring of the concrete, resulting in the deformation of the lining pipe due to stress, etc., affecting the insertion of subsequent steel bars, etc., and ensuring the stability of the subsequent tensioning work.

[0027] The vibration unit comprises an arc bar 7 installed at the rear end of the rotating drum 3, an elastic box 8 is installed at the rear end of the steel template body 1, a U-shaped block 9 is slidably connected inside the elastic box 8, a buffer pad 16 is installed at the long end of the U-shaped block 9, and a push block column 10 is installed at the short end of the U-shaped block 9; Figure 1-Figure 3 As shown, during the rotation of the drum 3, the front ends of a number of arc strips 7 continuously contact the rear ends of the push block columns 10, and the rear ends of the push block columns 10 slide on the arc surfaces of the arc strips 7, and when the push block columns 10 are no longer in contact with the arc strips 7 after the U-shaped block 9 moves forward, the elastic force of the elastic member 11 can be used to rapidly move part of the U-shaped block 9 backward, so that the buffer pad 16 impacts the inner rear end of the steel formwork body 1, causing the steel formwork body 1 to vibrate. When pouring concrete, the vibrating steel formwork body 1 can improve the uniformity of pouring, and the pouring efficiency is higher.

[0028] The power unit is installed on the drum 3. Figure 1-Figure 3 As shown, the power unit can provide the basis for power for the rotation of the drum 3.

[0029] The vibration unit further includes an elastic member 11 having one end connected to the front end of the U-shaped block 9, and the other end of the elastic member 11 is connected to the inner front end of the elastic box 8. Figure 3 As shown, when the U-shaped block 9 moves forward, the elastic member 11 is compressed to store force. When the push block column 10 is not in contact with the arc bar 7, the force stored in the elastic member 11 can quickly push the U-shaped block 9 backward to impact the inner rear end of the steel formwork body 1, thereby achieving continuous vibration, and the number is large, the vibration is more uniform, and it is more conducive to the uniform pouring of concrete.

[0030] The power unit includes a secondary sprocket 12, a reduction motor 13 is installed on one side of the inner side of the steel template body 1, and a main sprocket 14 is installed on the output shaft of the reduction motor 13. The main sprocket 14 is connected to the secondary sprocket 12 through a chain 15. Figure 2As shown, the reduction motor 13 drives the main sprocket 14 to rotate when working, and the chain 15 can be used to rotate a plurality of slave sprockets 12, thereby rotating the corresponding drum 3, providing the basis for the work power.

[0031] The arc strip 7 is located on the circumference of the drum 3, and the elastic box 8 is also located on the circumference of the drum 3. Figure 1-Figure 3 As shown, the number of arc bars 7 is equal to the number of elastic boxes 8. During the rotation of the drum 3, the arc bars 7 intermittently contact and work with the push block columns 10 one by one, thereby achieving uninterrupted vibration operation and ensuring stability during pouring.

[0032] Working principle: When in use, Figure 1-Figure 3 As shown, the prefabricated T-beam tensioning end steel template is first installed in conjunction with the other part templates of the prefabricated T-beam, and then the inner lining pipes to be embedded are successively passed through the rotating drum 3 located at the tensioning end. By rotating the distal end of the hand-tightening bolt 4, the tube squeezing ball 5 at the proximal end of the hand-tightening bolt 4 can compress the inserted inner lining pipe, and the anti-slip protrusion 6 on the tube squeezing ball 5 can improve the fixing effect of the inner lining pipe. When the rotating drum 3 rotates, it can stably rotate with the inserted inner lining pipe, buffer and redirect the concrete poured on the inner lining pipe, etc., to prevent the inner lining pipe from being compressed during continuous concrete pouring, resulting in stress deformation of the inner lining pipe, etc., affecting the insertion of subsequent steel bars, etc., thereby ensuring the stability of the subsequent tensioning work and more stable effect during operation.

[0033] like Figure 1-Figure 3 As shown, during the rotation of the drum 3, the front ends of several arc strips 7 continuously contact the rear ends of the push block columns 10, and the rear ends of the push block columns 10 slide on the arc surfaces of the arc strips 7, and when the push block columns 10 are no longer in contact with the arc strips 7 after the U-shaped block 9 moves forward, the elastic force of the elastic member 11 can be used to rapidly move the U-shaped block 9 backward, so that the buffer pad 16 impacts the inner rear end of the steel formwork body 1, causing the steel formwork body 1 to vibrate. When pouring concrete, the vibrated steel formwork body 1 can improve the uniformity of pouring and make pouring more efficient. At the same time, after the pouring is completed and the T-beam is formed, the steel formwork is removed by vibrating, which makes it more convenient to separate the steel formwork body 1 adhered to the concrete, and is more convenient for subsequent use.

[0034] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A prefabricated T-beam tension end steel formwork, characterized in that: include: Steel formwork body, fixed pipe unit, vibration unit and power unit; A cover plate is installed at the front end of the steel template body, and a plurality of rotating drums are rotatably connected to the inner rear end of the steel template body; The fixed tube unit comprises a hand-tightening bolt threadedly connected to the front end of the rotating drum, a tube squeezing ball is installed at the proximal end of the hand-tightening bolt, and an anti-slip protrusion is provided on the tube squeezing ball; The vibration unit comprises an arc bar installed at the rear end of the rotating drum, an elastic box is installed at the rear end of the steel template body, a U-shaped block is slidably connected inside the elastic box, a buffer pad is installed at the long end of the U-shaped block, and a push block column is installed at the short end of the U-shaped block; The power unit is installed on the rotating drum.

2. The prefabricated T-beam tension end steel formwork according to claim 1, characterized in that: The vibration unit further comprises an elastic member with one end connected to the front end of the U-shaped block, and the other end of the elastic member is connected to the inner front end of the elastic box.

3. The prefabricated T-beam tension end steel formwork according to claim 1, characterized in that: The power unit comprises a slave sprocket, a reduction motor is installed on one side of the interior of the steel formwork body, a main sprocket is installed on the output shaft of the reduction motor, and the main sprocket is connected to the slave sprocket through a chain.

4. The prefabricated T-beam tension end steel formwork according to claim 1, characterized in that: The arc strip is located on the circumference of the rotating drum, and the elastic box is also located on the circumference of the rotating drum.

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