Anchor reinforcement device for fixed end of prestressed steel strand

Abstract

The present invention discloses a device for reinforcing anchors at the fixed ends of prestressed steel strands, and belongs to the technical field of box girder construction. A device for reinforcing anchors at the fixed ends of prestressed steel strands comprises an anchor plate, an anchor is connected to the top of the anchor plate, a clamping assembly is provided on the outside of the anchor, the clamping assembly is mounted above the anchor plate, a limiting assembly is connected to the top of the anchor plate, the limiting assembly is respectively connected to the anchor and the clamping assembly, and an adjustment assembly is provided below the anchor plate. The device for reinforcing anchors at the fixed ends of prestressed steel strands is capable of rotating by controlling a rotating rod by providing a clamping assembly, so that the two clamping rings approach each other. When the clamping rings approach each other, the anchor is limited and fixed, thereby preventing the anchor from slipping and failing, thereby avoiding misalignment between the anchor plate and the anchor, and improving the construction quality of the fixed ends of the prestressed steel strands.

Description

Technical Field

[0001] The present invention relates to the technical field of box girder construction, and more particularly to a device for reinforcing a fixed-end anchor of a prestressed steel strand. Background Art

[0002] A large number of fixed-end P-type anchors are present in the prestressed box girder design. During construction, the P-type anchor squeezes the steel strands and then passes them through the rear pad. After the concrete is poured, the steel strands are tensioned. The tensioning force of the steel strands needs to be transferred to the rear pad through the P-type anchor, and then to the concrete through the rear pad to complete the prestressed construction. The usual practice is to tighten the P-type anchor against the rear pad before pouring concrete. However, in existing construction operations, the fixing structure between the anchor and the anchor plate is relatively simple and prone to slip failure, which causes misalignment between the anchor and the anchor plate, thereby reducing the construction quality of the fixed end of the prestressed steel strand and having certain defects.

[0003] Based on this, the present invention designs a prestressed steel strand fixed end anchor reinforcement device to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for reinforcing the anchor of the fixed end of the prestressed steel strand, so as to solve the problem raised in the above background technology that the fixing structure between the anchor and the anchor plate in the existing construction operation is relatively simple and prone to slip failure, thereby causing misalignment between the anchor and the anchor plate, thereby reducing the construction quality of the fixed end of the prestressed steel strand.

[0005] A device for reinforcing the fixed end anchor of a prestressed steel strand comprises an anchor plate, an anchor connected to the top of the anchor plate, a clamping assembly provided on the outside of the anchor, the clamping assembly mounted above the anchor plate, a limiting assembly connected to the top of the anchor plate, the limiting assembly being connected to the anchor and the clamping assembly respectively, and an adjustment assembly provided below the anchor plate.

[0006] Preferably, the clamping assembly includes two mounting brackets mounted above the anchor plate, a rotating rod is rotatably connected between the two mounting brackets, thread line one and thread line two are symmetrically arranged on the outer side of the rotating rod along the middle part, the thread directions of thread line one and thread line two are opposite, and two thread blocks are connected to the outer side of the rotating rod, the two thread blocks are symmetrically arranged along the middle part, and a clamping ring is connected to the outer side of the thread block, the clamping ring is connected to the anchor, one end of the rotating rod passes through the mounting bracket and is connected to a connecting shaft, and the end of the connecting shaft away from the rotating rod is connected to a turntable.

[0007] Preferably, the two clamping rings are connected to a movable block on one side away from the threaded block, and a connecting rod is slidably connected between the two movable blocks. Both ends of the connecting rod pass through the movable block and are connected to a connecting seat, and the connecting seat is connected to the anchor plate.

[0008] Preferably, the limiting assembly includes an L-shaped frame arranged on the outside of the anchor plate, the outside of the L-shaped frame is connected to a threaded rod 1, the two ends of the threaded rod 1 are respectively connected to the anchor plate and the L-shaped frame, and the outside of the threaded rod 1 is connected to a movable gear, the inner cavity of the movable gear is slidably connected to a guide rod, the two ends of the guide rod are respectively connected to the anchor plate and the L-shaped frame, and the outside of the movable gear is engaged with a limiting gear, the limiting gear is fixed to the anchor, and the outside of the threaded rod 1 is connected to a transmission assembly.

[0009] Preferably, the transmission assembly includes a mounting seat arranged above the anchor plate, the inner cavity of the mounting seat is penetrated by a driving rod, one end of the driving rod is connected to bevel gear 1, the outer side of the bevel gear 1 is meshed with bevel gear 2, the bevel gear 2 is connected to threaded rod 1, the end of the driving rod away from bevel gear 1 is connected to a driven wheel, the outer side of the driven wheel is provided with a belt, and the driven wheel is connected to a driving wheel through the belt, and the driving wheel is connected to the connecting shaft.

[0010] Preferably, the adjustment assembly includes a fixing seat arranged on both sides below the anchor plate, the outer side of the fixing seat is rotatably connected to a hinged seat, the lower side of the hinged seat is connected to a mounting plate, the outer side of the mounting plate is provided with a mounting hole, and the upper side of the mounting plate is hinged with a threaded sleeve, the inner cavity of the threaded sleeve is connected to a threaded rod 2, the end of the threaded rod 2 away from the threaded sleeve passes through the anchor plate and is connected to a fixed shaft, and the end of the fixed shaft away from the anchor plate is connected to a handle.

[0011] Preferably, a connecting sleeve is hinged above the mounting plate, the connecting sleeve and the threaded sleeve are symmetrical along the middle of the mounting plate, and the inner cavity of the connecting sleeve is movably connected to a fixing rod, one end of the fixing rod is located in the inner cavity of the connecting sleeve and is connected to the limiting block, and the end of the fixing rod away from the limiting block passes through the connecting sleeve and is connected to the anchor plate.

[0012] Preferably, a plurality of through holes are provided on the top of the anchor.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] 1) In the present invention, by setting a clamping assembly, the device can be rotated by controlling the rotating rod, so that the two clamping rings are close to each other. When the clamping rings are close to each other, the anchor is limited and fixed, thereby preventing the anchor from slipping and failing, and further avoiding misalignment between the anchor plate and the anchor, thereby improving the construction quality of the fixed end of the prestressed steel strand.

[0015] 2) In the present invention, by setting a limit component, the device can automatically drive the threaded rod to rotate when controlling the clamping ring to limit and fix the anchor, thereby causing the movable gear to move upward, so that the teeth of the movable gear cooperate with the tooth grooves of the limit gear, thereby preventing the anchor from rotating, and further improving the construction quality of the fixed end of the prestressed steel strand.

[0016] 3) In the present invention, by providing an adjustment component, the device can control the mounting plate to rotate around the connection point between the hinge seat and the fixed seat, thereby facilitating the adjustment of the mounting angle of the mounting plate and avoiding the difficulty in installing the device due to the non-parallelism between the contact surface and the lower surface of the mounting plate, thereby improving the practical performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 A magnified view of the structure at center A;

[0019] Figure 3 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at B in the middle;

[0021] Figure 5 It is a schematic structural diagram of the limit assembly of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the clamping assembly of the present invention;

[0023] Figure 7 It is a cross-sectional view of the connecting sleeve structure of the present invention.

[0024] Explanation of the reference numerals in the figure: 1. Anchor plate; 2. Anchor; 3. Perforation; 4. Clamping assembly; 41. Mounting frame; 42. Rotating rod; 43. Thread line 1; 44. Thread line 2; 45. Thread block; 46. Clamping ring; 47. Connecting shaft; 48. Turntable; 49. Connecting seat; 410. Connecting rod; 411. Movable block; 5. Limiting assembly; 51. L-shaped frame; 52. Threaded rod 1; 53. Movable gear; 54. Guide rod; 55 , limit gear; 56, mounting seat; 57, driving rod; 58, bevel gear one; 59, bevel gear two; 510, driven pulley; 511, belt; 512, driving pulley; 6, adjustment assembly; 61, mounting plate; 62, mounting hole; 63, hinged seat; 64, fixed seat; 65, threaded sleeve; 66, threaded rod two; 67, fixed shaft; 68, handle; 69, connecting sleeve; 610, fixing rod; 611, limit block. DETAILED DESCRIPTION

[0025] Example: See Figure 1-7 A device for reinforcing the fixed end anchor of a prestressed steel strand comprises an anchor plate 1, an anchor 2 is connected to the top of the anchor plate 1, a clamping assembly 4 is provided on the outside of the anchor 2, the clamping assembly 4 is mounted above the anchor plate 1, a limiting assembly 5 is connected to the top of the anchor plate 1, the limiting assembly 5 is respectively connected to the anchor 2 and the clamping assembly 4, and an adjusting assembly 6 is provided below the anchor plate 1, and a plurality of through holes 3 are opened above the anchor 2.

[0026] The clamping assembly 4 includes two mounting frames 41 mounted above the anchor plate 1, and a rotating rod 42 is rotatably connected between the two mounting frames 41. The outer side of the rotating rod 42 is symmetrically provided with thread line 1 43 and thread line 2 44 along the middle thereof. The thread directions of thread line 1 43 and thread line 2 44 are opposite, and two thread blocks 45 are connected to the outer side of the rotating rod 42. The two thread blocks 45 are symmetrically provided along the middle thereof, and a clamping ring 46 is connected to the outer side of the thread block 45. The clamping ring 46 is connected to the anchor 2. One end of the rotating rod 42 passes through the mounting frame 41 and is connected to a connecting shaft 47. The end of the connecting shaft 47 away from the rotating rod 42 is connected to a turntable 48. The two clamping rings 46 are connected to a movable block 411 on the side away from the thread block 45. A connecting rod 410 is slidably connected between the two movable blocks 411. Both ends of the connecting rod 410 pass through the movable block 411 and are connected to a connecting seat 49. The connecting seat 49 is connected to the anchor plate 1.

[0027] Specifically, when the anchor 2 needs to be reinforced, the turntable 48 is first rotated so that the turntable 48 drives the connecting shaft 47 fixedly connected to it to rotate. When the connecting shaft 47 rotates, it drives the rotating rod 42 fixedly connected to it to rotate, so that the rotating rod 42 drives the thread line 1 43 and the thread line 2 44 to rotate respectively. When the thread line 1 43 and the thread line 2 44 rotate, they respectively drive the thread blocks 45 threadedly connected to them to approach each other, so that the thread block 45 drives the clamping ring 46 fixedly connected to it to move. When the clamping ring 46 moves, it will move along the axial direction of the rotating rod 42 under the limiting action of the connecting rod 410 and the movable block 411, so that the two clamping rings 46 limit and fix the anchor 2 to prevent the anchor 2 from slipping and failing.

[0028] By setting up the clamping assembly 4, the device can be rotated by controlling the rotating rod 42, so that the two clamping rings 46 are close to each other. When the clamping rings 46 are close to each other, the anchor 2 will be limited and fixed, thereby preventing the anchor 2 from slipping and failing, and further avoiding misalignment between the anchor plate 1 and the anchor 2, thereby improving the construction quality of the fixed end of the prestressed steel strand.

[0029] The limiting assembly 5 includes an L-shaped frame 51 arranged on the outside of the anchor plate 1, and a threaded rod 52 is connected to the outside of the L-shaped frame 51. The two ends of the threaded rod 52 are respectively connected to the anchor plate 1 and the L-shaped frame 51, and the outside of the threaded rod 52 is connected to a movable gear 53. The inner cavity of the movable gear 53 is slidably connected to a guide rod 54. The two ends of the guide rod 54 are respectively connected to the anchor plate 1 and the L-shaped frame 51, and the outer side of the movable gear 53 is engaged with a limiting gear 55. The limiting gear 55 is fixed to the anchor 2. The outer side of the threaded rod 52 is connected to a transmission assembly. The dynamic component includes a mounting base 56 arranged above the anchor plate 1, and a driving rod 57 is connected to the inner cavity of the mounting base 56, one end of the driving rod 57 is connected to a bevel gear 1 58, and a bevel gear 2 59 is engaged with the outer side of the bevel gear 1 58. The bevel gear 2 59 is connected to the threaded rod 1 52, and the end of the driving rod 57 away from the bevel gear 1 58 is connected to a driven wheel 510, and a belt 511 is provided on the outer side of the driven wheel 510, and the driven wheel 510 is connected to the driving wheel 512 through the belt 511, and the driving wheel 512 is connected to the connecting shaft 47.

[0030] Specifically, when the connecting shaft 47 rotates, it will drive the driving wheel 512 fixedly connected to it to rotate, so that the driving wheel 512 drives the driven wheel 510 to rotate through the belt 511, and when the driven wheel 510 rotates, it will drive the driving rod 57 fixedly connected to it to rotate, so that the driving rod 57 drives the bevel gear 1 58 fixedly connected to it to rotate, and when the bevel gear 1 58 rotates, it will drive the bevel gear 2 59 meshing with it to rotate, so that the bevel gear 2 59 drives the threaded rod 1 52 fixedly connected to it to rotate, and when the threaded rod 1 52 rotates, it will drive the movable gear 53 threadedly connected to it to move, and the movable gear 53 will move upward along the axis of the threaded rod 1 52 under the limiting action of the guide rod 54, so that the gear teeth of the movable gear 53 cooperate with the tooth grooves of the limiting gear 55, thereby preventing the anchor 2 from rotating.

[0031] By setting up the limiting component 5, the device can automatically drive the threaded rod 52 to rotate when controlling the clamping ring 46 to limit and fix the anchor 2, thereby causing the movable gear 53 to move upward, so that the teeth of the movable gear 53 cooperate with the tooth grooves of the limiting gear 55, thereby preventing the anchor 2 from rotating, further improving the construction quality of the fixed end of the prestressed steel strand.

[0032] The adjusting assembly 6 includes a fixing seat 64 arranged on both sides below the anchor plate 1, and the outer side of the fixing seat 64 is rotatably connected to the hinged seat 63, and the lower side of the hinged seat 63 is connected to the mounting plate 61. The outer side of the mounting plate 61 is provided with a mounting hole 62, and the upper side of the mounting plate 61 is hingedly connected to a threaded sleeve 65, and the inner cavity of the threaded sleeve 65 is connected to a threaded rod 2 66. The end of the threaded rod 2 66 away from the threaded sleeve 65 passes through the anchor plate 1 and is connected to a fixed shaft 67. The end of the fixed shaft 67 away from the anchor plate 1 is connected to a handle 68. A connecting sleeve 69 is also hinged above the mounting plate 61. The connecting sleeve 69 and the threaded sleeve 65 are symmetrical along the middle of the mounting plate 61, and the inner cavity of the connecting sleeve 69 is movably connected to a fixing rod 610. One end of the fixing rod 610 located in the inner cavity of the connecting sleeve 69 is connected to a limiting block 611, and the end of the fixing rod 610 away from the limiting block 611 passes through the connecting sleeve 69 and is connected to the anchor plate 1.

[0033] Specifically, when the contact surface is not parallel to the lower surface of the mounting plate 61, the control handle 68 is rotated so that the handle 68 drives the fixed shaft 67 fixedly connected thereto to rotate. When the fixed shaft 67 rotates, it drives the threaded rod 2 66 fixedly connected thereto to rotate, thereby causing the threaded rod 2 66 to drive the threaded sleeve 65 threadedly connected thereto to move. When the threaded sleeve 65 moves, it drives the mounting plate 61 hinged thereto to move upward, thereby lifting the side of the mounting plate 61 close to the threaded sleeve 65 upward, and the mounting plate 61 rotates around the middle, thereby making the lower surface of the mounting plate 61 parallel to the contact surface.

[0034] By setting up the adjustment component 6, the device can control the mounting plate 61 to rotate around the connection point between the hinge seat 63 and the fixed seat 64, thereby making it easy to adjust the installation angle of the mounting plate 61, avoiding the difficulty in installing the device due to the contact surface being non-parallel to the lower surface of the mounting plate 61, thereby improving the practical performance of the device.

[0035] Working principle of the present invention:

[0036] When the contact surface is not parallel to the lower surface of the mounting plate 61, the control handle 68 is rotated, so that the handle 68 drives the fixed shaft 67 fixed thereto to rotate. When the fixed shaft 67 rotates, it drives the second threaded rod 66 fixed thereto to rotate, so that the second threaded rod 66 drives the threaded sleeve 65 threadedly connected thereto to move. When the threaded sleeve 65 moves, it drives the mounting plate 61 hinged thereto to move upward, so that the side of the mounting plate 61 close to the threaded sleeve 65 is lifted upward, and the mounting plate 61 rotates around the middle, so that the lower surface of the mounting plate 61 is parallel to the contact surface.

[0037] When the anchor 2 needs to be reinforced, the turntable 48 is first rotated so that the turntable 48 drives the connecting shaft 47 fixedly connected thereto to rotate. When the connecting shaft 47 rotates, it drives the rotating rod 42 fixedly connected thereto to rotate, so that the rotating rod 42 drives the thread line 1 43 and the thread line 2 44 to rotate respectively. When the thread line 1 43 and the thread line 2 44 rotate, they respectively drive the thread blocks 45 threadedly connected thereto to approach each other, so that the thread block 45 drives the clamping ring 46 fixedly connected thereto to move. When the clamping ring 46 moves, it moves along the axial direction of the rotating rod 42 under the limiting action of the connecting rod 410 and the movable block 411, so that the two clamping rings 46 limit and fix the anchor 2 to prevent the anchor 2 from slipping and failing. When the connecting shaft 47 rotates, it drives The driving wheel 512 fixedly connected to it rotates, so that the driving wheel 512 drives the driven wheel 510 to rotate through the belt 511. When the driven wheel 510 rotates, it will drive the driving rod 57 fixedly connected to it to rotate, so that the driving rod 57 drives the bevel gear 1 58 fixedly connected to it to rotate. When the bevel gear 1 58 rotates, it will drive the bevel gear 2 59 meshing with it to rotate, so that the bevel gear 2 59 drives the threaded rod 1 52 fixedly connected to it to rotate. When the threaded rod 1 52 rotates, it will drive the movable gear 53 threadedly connected to it to move. The movable gear 53 will move upward along the axis of the threaded rod 1 52 under the limiting action of the guide rod 54, so that the gear teeth of the movable gear 53 cooperate with the tooth grooves of the limiting gear 55, thereby preventing the anchor 2 from rotating.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for reinforcing a fixed end anchor of a prestressed steel strand, comprising an anchor plate (1), characterized in that: An anchor (2) is connected above the anchor plate (1), a clamping assembly (4) is provided on the outside of the anchor (2), the clamping assembly (4) is mounted above the anchor plate (1), a limiting assembly (5) is connected above the anchor plate (1), the limiting assembly (5) is connected to the anchor (2) and the clamping assembly (4) respectively, and an adjusting assembly (6) is provided below the anchor plate (1); The clamping assembly (4) includes two mounting frames (41) mounted above the anchor plate (1), a rotating rod (42) is rotatably connected between the two mounting frames (41), a thread line 1 (43) and a thread line 2 (44) are symmetrically arranged on the outer side of the rotating rod (42) along the middle thereof, the thread directions of the thread line 1 (43) and the thread line 2 (44) are opposite, and two thread blocks (45) are connected to the outer side of the rotating rod (42), the two thread blocks (45) are symmetrically arranged along the middle thereof, and a clamping ring (46) is connected to the outer side of the thread block (45), and the clamping ring (46) is connected to the anchor (2), one end of the rotating rod (42) passes through the mounting frame (41) and is connected to a connecting shaft (47), and the end of the connecting shaft (47) away from the rotating rod (42) is connected to a turntable (48); The limiting assembly (5) includes an L-shaped frame (51) arranged on the outside of the anchor plate (1), the outside of the L-shaped frame (51) is connected to a threaded rod (52), the two ends of the threaded rod (52) are respectively connected to the anchor plate (1) and the L-shaped frame (51), and the outside of the threaded rod (52) is connected to a movable gear (53), the inner cavity of the movable gear (53) is slidably connected to a guide rod (54), the two ends of the guide rod (54) are respectively connected to the anchor plate (1) and the L-shaped frame (51), and the outside of the movable gear (53) is engaged with a limiting gear (55), the limiting gear (55) is fixed to the anchor (2), and the outside of the threaded rod (52) is connected to a transmission assembly; The transmission assembly includes a mounting seat (56) arranged above the anchor plate (1), an inner cavity of the mounting seat (56) is connected to a driving rod (57), one end of the driving rod (57) is connected to a bevel gear 1 (58), the outer side of the bevel gear 1 (58) is meshed with a bevel gear 2 (59), the bevel gear 2 (59) is connected to the threaded rod 1 (52), the end of the driving rod (57) away from the bevel gear 1 (58) is connected to a driven wheel (510), the outer side of the driven wheel (510) is provided with a belt (511), and the driven wheel (510) is connected to a driving wheel (512) through the belt (511), and the driving wheel (512) is connected to the connecting shaft (47); The adjustment assembly (6) includes a fixing seat (64) arranged on both sides below the anchor plate (1), the outer side of the fixing seat (64) is rotatably connected to a hinge seat (63), the lower side of the hinge seat (63) is connected to a mounting plate (61), the outer side of the mounting plate (61) is provided with a mounting hole (62), and the upper side of the mounting plate (61) is hinged with a threaded sleeve (65), the inner cavity of the threaded sleeve (65) is connected to a second threaded rod (66), the end of the second threaded rod (66) away from the threaded sleeve (65) passes through the anchor plate (1) and is connected to a fixed shaft (67), and the end of the fixed shaft (67) away from the anchor plate (1) is connected to a handle (68).

2. The anchor reinforcement device for the fixed end of a prestressed steel strand according to claim 1, characterized in that: The two clamping rings (46) are connected to a movable block (411) on one side away from the threaded block (45); a connecting rod (410) is slidably connected between the two movable blocks (411); both ends of the connecting rod (410) pass through the movable block (411) and are connected to a connecting seat (49); and the connecting seat (49) is connected to the anchor plate (1).

3. The anchor reinforcement device for the fixed end of a prestressed steel strand according to claim 1, characterized in that: A connecting sleeve (69) is hingedly connected above the mounting plate (61). The connecting sleeve (69) and the threaded sleeve (65) are symmetrical along the middle of the mounting plate (61). The inner cavity of the connecting sleeve (69) is movably connected to a fixing rod (610). One end of the fixing rod (610) located in the inner cavity of the connecting sleeve (69) is connected to a limiting block (611), and the end of the fixing rod (610) away from the limiting block (611) passes through the connecting sleeve (69) and is connected to the anchor plate (1).

4. The anchor reinforcement device for the fixed end of a prestressed steel strand according to claim 1, characterized in that: A plurality of through holes (3) are provided above the anchor (2).

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