A cast-in-place prestressed tensioning trestle

Abstract

The present invention discloses a cast-in-place prestressed tensioning bracket, which includes a housing. A perforation is provided inside the housing, and hydraulic rods located inside the housing are arranged on both sides of the perforation. A protrusion is provided on one side of the housing, and a power motor is arranged inside the protrusion. A swing die is power-connected to one side of the output shaft of the power motor. A protrusion block is power-connected inside the hydraulic rod. A mating block is arranged on one side of the protrusion block. The mating block and the swing die are slidably arranged in contact with each other through an inclined surface. A sliding device is arranged between the protrusion block and the mating block to enable the mating block to slide relative to the protrusion block after the mating block is squeezed by the swing die. An elastic device is arranged on one side of the mating block.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering construction equipment, and specifically to a cast-in-situ prestressed tensioning rack. Background Art

[0002] During the engineering construction process, for projects with prestressed design, it is often necessary to use a prestressed tensioning rack to pull the steel ropes for tensioning to change the existing prestress, thus realizing the process of changing the cast-in-situ prestress. However, there are many disadvantages in this process. Firstly, the structure for clamping the steel rope during tensioning and the mechanism for pulling the steel rope are two independent mechanisms operating separately, and it is impossible to achieve a more energy-saving and simple structure to realize the function of a single mechanism clamping the steel rope and then pulling and tensioning it. This has resulted in a relatively high manufacturing cost of the equipment, and it is also more troublesome for personnel to use the equipment. Due to the existence of the above disadvantages, the existing equipment cannot meet the normal production work requirements, and moreover, the use of two separate mechanisms for individual driving has increased the maintenance burden on personnel. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cast-in-situ prestressed tensioning rack, which can solve the problems in the above-mentioned prior art.

[0004] The present invention is realized through the following technical solutions: A cast-in-situ prestressed tensioning rack of the present invention includes a housing. A perforation is provided inside the housing, and hydraulic rods are provided on both sides of the perforation inside the housing. A protrusion is provided on one side of the housing, and a power motor is provided inside the protrusion. A swing die is power-connected to one side of the output shaft of the power motor. A protruding block is power-connected inside the hydraulic rod. A mating block is provided on one side of the protruding block. The mating block and the swing die are slidably arranged in contact with each other through an inclined surface. A sliding device is provided between the protruding block and the mating block to enable the mating block to slide relative to the protruding block after the mating block is squeezed by the swing die. An elastic device is provided on one side of the mating block.

[0005] Beneficially, the sliding device includes an inner hole provided inside the protruding block. A number of balls are provided inside the inner hole. A connecting plate is provided on one side of the mating block, and an intermediate cylinder is fixedly provided between the connecting plates. The intermediate cylinder slidably passes through the inner hole, and the intermediate cylinder is in contact with the balls.

[0006] Beneficially, the elastic device includes a spring inner hole provided inside the mating block. A pressing rod is slidably arranged inside the spring inner hole. A pushing spring is elastically arranged between the pressing rod and the spring inner hole. A resisting block is provided on one side of the pressing rod.

[0007] Beneficially, it further includes a mating box body. Two sliding rods are arranged in the mating box body. The sliding rods are slidably connected to the shell in a matching manner. A driving shaft is rotatably arranged in the mating box body. A top motor is arranged at the top of the mating box body. The top motor is power-connected to the driving shaft. The driving shaft is in threaded engagement with the shell.

[0008] Beneficially, it further includes a box body. A moving block is slidably arranged in the box body. A threaded shaft is rotatably arranged above the box body. The threaded shaft is in threaded engagement with the moving block. The threaded shaft is driven to rotate by a motor arranged at the rear side of the box body. A connecting rod is arranged on one side of the moving block. The connecting rod is fixedly connected to the mating box body in a matching manner.

[0009] Beneficially, it further includes a side bracket. The side bracket is fixedly connected to the mating box body in a matching manner. A bottom rod is arranged at the lower side of the side bracket. A platform bracket is arranged at the lower side of the bottom rod. At least four pulleys are arranged at the bottom of the platform bracket. A lifting plate is slidably arranged on the outer surface of the bottom rod. A buffer spring is elastically arranged between the lifting plate and the platform bracket. The buffer spring is wound around the outer surface of the bottom rod. A top groove is arranged at the top of the lifting plate. A connecting convex block is hinged on one side of the bottom rod. A clamping block is arranged on one side of the connecting convex block. A swinging rod is arranged on one side of the clamping block. At least four guide rods are arranged at the bottom of the lifting plate. The guide rods slidably pass through the platform bracket. A roller is rotatably arranged in the guide rods.

[0010] The beneficial effects of the present invention are as follows:

[0011] When adjusting the position between the abutting block and the steel wire rope, the driving shaft can be driven to rotate by the top motor, so that the shell slides up and down on the outer surface of the sliding rod. It is also possible to drive the moving block to slide back and forth after the threaded shaft works, so as to realize that the abutting block is located directly above and directly below the steel wire rope, which is convenient for the abutting block to abut and clamp the steel wire rope. When the roller does not protrude from the pulley, the device as a whole can be driven to approach or move away from the steel wire rope by personnel. It is also possible to rotate the swinging rod, so that the clamping block is stuck in the top groove. After the buffer spring is compressed, the guide rod and the roller are extended downward, so that the roller protrudes from the pulley and the device is supported. At this time, the support and movement of the device are realized by the roller. At this time, the front and rear positions of the device can be adjusted along the rolling direction of the roller.

[0012] This device utilizes the hydraulic rod to push the raised block. After the raised block abuts against the middle cylinder through the ball, the mating block abuts against the inclined surface on one side of the swing die, causing the mating block to move towards the steel rope. The pressing rod and the abutting block are arranged to abut against the steel rope. When the friction force between the abutting blocks for clamping the steel rope increases to a level that allows it to move with the abutting blocks, at this time, the mating block further squeezes the push spring inside the inner hole of the spring, causing the pressing rod to further clamp the steel rope while pulling the steel rope to move to the right, achieving the tensioning effect on the steel rope. And when the mating block resets, the swing die can swing under the drive of the power motor. After the mating block is disengaged from the swing die, the push spring can reset from the compressed state. And since there is no longer the swing die squeezing the mating block, the mating block cannot drive the steel rope to reset to the left after resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] For ease of explanation, the present invention will be described in detail by the following specific embodiments and accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall internal structure of a cast-in-place prestressed tensioning jig of the present invention;

[0015] Figure 2 It is Figure 1 a schematic diagram at position A in

[0016] Figure 3 It is Figure 1 a schematic diagram in the B direction in

[0017] Figure 4 It is Figure 1 a schematic diagram of another embodiment in

[0018] In the figure, housing 11, hydraulic rod 13, moving block 14, threaded shaft 15, box body 16, connecting rod 17, sliding rod 18, top motor 19, drive shaft 21, mating box body 22, protrusion 23, swing die 24, power motor 25, abutting block 26, inner hole 31, connecting plate 32, spring inner hole 33, push spring 34, mating block 35, pressing rod 36, ball 37, middle cylinder 38, raised block 39, side bracket 41, bottom rod 42, swing rod 43, connecting lug 44, clamping block 45, top groove 46, buffer spring 47, guide rod 48, roller 49, pulley 51, platform bracket 52. EMBODIMENTS

[0019] As Figures 1-4 shown, the present invention will be described in detail. For the convenience of narration, the following directions are defined as follows: The up-down, left-right, front-back directions mentioned below are the same as Figure 1The up-down, left-right, front-back directions of the projection relationship are consistent. A cast-in-place prestressed tensioning tire frame of the present invention includes a shell 11, a perforation is arranged in the shell 11, and hydraulic rods 13 located in the shell 11 are arranged on both sides of the perforation. A protrusion 23 is arranged on one side of the shell 11, and a power motor 25 is arranged in the protrusion 23. A swing mold 24 is arranged on one side of the output shaft of the power motor 25. A protrusion block 39 is arranged in the hydraulic rod 13 for power connection. An inner hole 31 is arranged in the protrusion block 39, and a plurality of balls 37 are arranged in the inner hole 31. The protrusion block 39 is provided with a plurality of balls 37. A matching block 35 is provided on one side of 9, and the matching block 35 and the swing mold 24 are slidably arranged against each other through an inclined surface. A connecting plate 32 is provided on one side of the matching block 35, and an intermediate column 38 is fixedly arranged between the connecting plates 32. The intermediate column 38 slides through the inner hole 31, and the intermediate column 38 is arranged against the ball 37. A spring inner hole 33 is provided in the matching block 35, and a pressing rod 36 is slidably arranged in the spring inner hole 33. A push spring 34 is elastically arranged between the pressing rod 36 and the spring inner hole 33. A spring 34 is elastically arranged between the pressing rod 36 and the spring inner hole 33. A counter-block 26 is arranged, so that after the protruding block 39 is pushed out by the hydraulic rod 13, the matching block 35 is counteracted with the swinging mold 24, so that the matching block 35 slides along the inclined surface of the swinging mold 24, and at this time, the intermediate column 38 slides in the inner hole 31, and the ball 37 counteracts the inner hole 31 to play a counteracting role. After the counter-block 26 squeezes the steel rope, the matching block 35 continues to move along the swinging mold 24. At this time, the elastic force of the push spring 34 is used to make the matching block 35 further squeeze the steel rope. The pressing rod 36, after the counter block 26 and the steel rope are squeezed to the point where they can drive the steel rope to move, the counter block 26 drives the steel rope to move to the right to achieve the tensioning function of the steel rope. In the process of the counter block 26 clamping the steel rope and moving it, the intermediate column 38 slides toward the steel rope relative to the protruding block 39, and after the power motor 25 works, it can make the swing mold 24 swing and release the counter sliding setting with the matching block 35, so that the push spring 34 can drive the matching block 35 to bounce back and reset, so that the counter block 26 can get rid of the counter-jamming setting with the steel rope.

[0020] Beneficially, it further includes a mating box body 22. Two sliding rods 18 are arranged in the mating box body 22. The sliding rods 18 are slidably and cooperatively connected with the housing 11. A driving shaft 21 is rotatably arranged in the mating box body 22. A top motor 19 is arranged at the top of the mating box body 22. The top motor 19 is power-connected to the driving shaft 21. The driving shaft 21 is in threaded cooperation with the housing 11. By driving the driving shaft 21 to rotate by the top motor 19, the housing 11 can slide on the sliding rods 18 to adjust the up-and-down position of the housing 11 in the mating box body 22, so that the abutting block 26 can be centered and clamped with the steel wire rope after clamping. Embodiment

[0021] Beneficially, it further includes a box body 16. A moving block 14 is slidably arranged in the box body 16. A threaded shaft 15 is rotatably arranged in the upper side of the box body 16. The threaded shaft 15 is in threaded cooperation with the moving block 14. The threaded shaft 15 is driven to rotate by a motor arranged at the rear side of the box body 16. A connecting rod 17 is arranged on one side of the moving block 14. The connecting rod 17 is fixedly and cooperatively connected with the mating box body 22. By indirectly driving the mating box body 22 and the housing 11 to move back and forth by the back-and-forth sliding of the moving block 14, the abutting block 26 can clamp the steel wire rope after adjusting the front-and-back position. Embodiment

[0022] Beneficially, it further includes a side bracket 41. The side bracket 41 is fixedly and cooperatively connected with the mating box body 22. A bottom rod 42 is arranged at the lower side of the side bracket 41. A platform bracket 52 is arranged at the lower side of the bottom rod 42. At least four pulleys 51 are arranged at the bottom of the platform bracket 52. A lifting plate 53 is slidably arranged on the outer surface of the bottom rod 42. A buffer spring 47 is elastically arranged between the lifting plate 53 and the platform bracket 52. The buffer spring 47 is wound around the outer surface of the bottom rod 42. A top groove 46 is arranged at the top of the lifting plate 53. A connecting convex block 44 is hingedly arranged on one side of the bottom rod 42. A clamping block 45 is arranged on one side of the connecting convex block 44. A swing rod 43 is arranged on one side of the clamping block 45. At least four guide rods 48 are arranged at the bottom of the lifting plate 53. The guide rods 48 slidably pass through the platform bracket 52. A roller 49 is rotatably arranged in the guide rods 48. After the connecting convex block 44 rotates, the clamping block 45 is clamped into the top groove 46, so that the lifting plate 53 drives the roller 49 to move downward, and then the roller 49 protrudes out of the pulley 51, so that personnel can use the pulley 51 or the roller 49 respectively to move the equipment in two vertical directions.

[0023] In the initial state, the above-mentioned devices, components and structures are in a stopped working state. This device can, on the basis of meeting the up and down position adjustment, use the hydraulic cylinder to push the counterweight block 26 to continue to clamp the steel rope after clamping the steel rope to realize the prestress tensioning process.

[0024] When adjusting the position between the counterweight block 26 and the steel rope, the driving shaft 21 can be rotated by the top motor 19 to make the housing 11 slide up and down on the outer surface of the sliding rod 18, or the moving block 14 can be driven to slide back and forth by the threaded shaft 15 after working, so as to make the counterweight block 26 be located directly above and directly below the steel rope to facilitate the counterweight block 26 to counteract and clamp the steel rope. At this time, the box body 16 is placed on the cast-in-place concrete square, and then the existing adjustment is carried out.

[0025] When the roller 49 does not protrude from the pulley 51, the personnel can also drive the whole device to approach or move away from the steel rope. After rotating the swing rod 43, the block 45 can be stuck in the top groove 46. After the buffer spring 47 is compressed, the guide rod 48 and the roller 49 are extended downward, so that the roller 49 protrudes from the pulley 51 to support the device. At this time, the support and movement of the device are realized by the roller 49, and the front and rear positions of the device can be adjusted along the rolling direction of the roller 49.

[0026] This device uses the hydraulic rod 13 to push the raised block 39. After the raised block 39 abuts against the middle column 38 through the ball 37, the mating block 35 abuts against the inclined surface on one side of the swing die 24, so that the mating block 35 moves towards the steel rope, and the pressing rod 36 and the counterweight block 26 are set to abut against the steel rope. When the friction force between the counterweight blocks 26 clamping the steel rope increases to the point where it can move with the counterweight block 26, at this time, the mating block 35 further compresses the push spring 34 in the spring inner hole 33, so that the pressing rod 36 further clamps the steel rope and pulls the steel rope to move to the right, realizing the tensioning effect on the steel rope. And when the mating block 35 resets, the swing die 24 can be swung under the drive of the power motor 25. After the mating block 35 is disengaged from the swing die 24, the push spring 34 can be reset from the compressed state. And because there is no longer the swing die 24 pressing the mating block 35, the mating block 35 cannot drive the steel rope to reset to the left after resetting.

[0027] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be conceived without creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A cast-in-place prestressed tensioning jig, comprising a housing. A perforation is provided inside the housing. Hydraulic rods are provided on both sides of the perforation and are located inside the housing. A protrusion is provided on one side of the housing. A power motor is provided inside the protrusion. A swing die is power-connected to one side of the output shaft of the power motor. A raised block is power-connected inside the hydraulic rod. A mating block is provided on one side of the raised block. The mating block and the swing die are slidably arranged in contact with each other through an inclined surface. A sliding device is provided between the raised block and the mating block to enable the mating block to slide relative to the raised block after the mating block is squeezed by the swing die. An elastic device is provided on one side of the mating block.

2. The cast-in-place prestressed tensioning trestle according to claim 1, characterized in that: The sliding device includes an inner hole provided inside the raised block. A number of balls are provided inside the inner hole. A connecting plate is provided on one side of the mating block. An intermediate cylinder is fixedly provided between the connecting plates. The intermediate cylinder slidably passes through the inner hole. The intermediate cylinder is in contact with the balls.

3. The cast-in-place prestressed tensioning bracket according to claim 1, characterized in that: The elastic device is a spring inner hole provided inside the mating block. A pressing rod is slidably provided inside the spring inner hole. A pushing spring is elastically provided between the pressing rod and the spring inner hole. A abutting block is provided on one side of the pressing rod.

4. A cast-in-place prestressed tensioning falsework according to any one of claims 1-3, characterized in that: It further includes a mating box body. Two sliding rods are provided inside the mating box body. The sliding rods are slidably and cooperatively connected with the housing. A driving shaft is rotatably provided inside the mating box body. A top motor is provided on the top of the mating box body. The top motor is power-connected to the driving shaft. The driving shaft is in threaded cooperation with the housing.

5. The cast-in-place prestressed tensioning falsework according to claim 4, characterized in that: It further includes a box body. A moving block is slidably provided inside the box body. A threaded shaft is rotatably provided on the upper side inside the box body. The threaded shaft is in threaded cooperation with the moving block. The threaded shaft is driven to rotate by a motor provided at the rear side of the box body. A connecting rod is provided on one side of the moving block. The connecting rod is fixedly and cooperatively connected with the mating box body.

6. The cast-in-place prestressed tensioning falsework according to claim 4, characterized in that: It further includes a side bracket. The side bracket is fixedly and cooperatively connected with the mating box body. A bottom rod is provided on the lower side of the side bracket. A platform bracket is provided on the lower side of the bottom rod. At least four pulleys are provided at the bottom of the platform bracket. A lifting plate is slidably provided on the outer surface of the bottom rod. A buffer spring is elastically provided between the lifting plate and the platform bracket. The buffer spring is wound around the outer surface of the bottom rod. A top groove is provided at the top of the lifting plate. A connecting convex block is hinged on one side of the bottom rod. A clamping block is provided on one side of the connecting convex block. A swing rod is provided on one side of the clamping block. At least four guide rods are provided at the bottom of the lifting plate. The guide rods slidably pass through the platform bracket. Rollers are rotatably provided inside the guide rods.

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