Repairing and reinforcing device for concrete structure

Abstract

The invention discloses a repairing and reinforcing device for a concrete structure. The repairing and reinforcing device comprises a base, a pair of supporting columns are arranged on the base, a liftable supporting rod is connected to the upper portions of the supporting columns, a first supporting plate is connected to the upper portion of the supporting rod, and a sliding block is arranged on the first supporting plate; a second supporting plate is arranged above the first supporting plate, a connecting rod is arranged on the sliding block, and the second supporting plate is connected with the sliding block through the connecting rod; the second supporting plate is connected with a movable supporting piece; a ground supporting and fixing assembly synchronously linked with the supporting rod is further arranged in the base. The device can be suitable for supporting beams of different sizes, rotating adjustment of the supporting face is conducted in a self-adaptive mode, and the applicability of the device is improved. And meanwhile, when the supporting piece ascends to the target height, stable supporting of the device can be completed, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a repairing and reinforcing device for a concrete structure. Background Art

[0002] Concrete is a general term for engineering composite materials that are made of aggregates bonded together by cementitious materials. The term concrete usually refers to cement as the cementitious material, sand and stone as aggregates, and water (which may contain admixtures and additives) in a certain proportion and mixed together to obtain cement concrete, also known as ordinary concrete, which is widely used in civil engineering.

[0003] When cracks appear in the roof beams of concrete structures, they are usually repaired and reinforced by using the method of concrete beam bonding steel reinforcement. After the concrete beam bonding steel is attached to the concrete beam, the workers need to reinforce the concrete beam bonding steel and the concrete beam through the already set anchor bolts. During the reinforcement, due to the lack of effective support tools, the fit between the concrete beam and the concrete beam bonding steel may be affected, thus affecting the reinforcement effect.

[0004] The existing device for supporting the bonding of steel to concrete beams has poor flexibility. When moving to the target position, the device must be fixed first and then raised and lowered, which has low work efficiency. At the same time, the supporting parts for supporting the concrete beams and the bonding of steel to concrete beams cannot be flexibly adjusted, and cannot meet the reinforcement requirements of concrete beams of different sizes. Summary of the invention

[0005] The purpose of the present invention is to address the problems existing in the prior art and to provide a repair and reinforcement device for a concrete structure. The present invention can provide stable support for the device while raising the support member to a target height, thereby improving work efficiency. At the same time, the present invention can be applied to the support of beams of different sizes and can adaptively adjust the support surface, thereby improving the applicability of the device.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A repair and reinforcement device for a concrete structure comprises a base, a pair of support columns are arranged on the base, a liftable support rod is connected above the support columns, a first support plate is connected above the support rod, a slider is arranged on the first support plate; a second support plate is arranged above the first support plate, a connecting rod is arranged on the slider, and the second support plate is connected to the slider via the connecting rod; a movable support member is connected to the second support plate; a ground support fixing assembly which is synchronously linked with the support rod is also arranged in the base.

[0008] In the above technical scheme, the support member can be adjusted according to the height of beams of different heights by means of the liftable support rod, thereby improving the applicability of the device. The slider is connected by sliding on the first support plate, and the slider is connected to the support plate by means of the connecting rod, thereby adjusting the plane of the second support plate, and then the support plane of the support member is rotated and adjusted, so that it can better fit the supported part, thereby improving the support effect. The width adjustment of the support surface is achieved by means of the movable support member, which can be suitable for supporting beams of different widths, thereby improving the applicability of the device. The fixing assembly can fix the device when it reaches the target position, thereby avoiding movement during the working process and affecting the reinforcement work.

[0009] Furthermore, the first support plate is provided with a first slide groove, the slider is located in the first slide groove, an elastic element is further provided in the first slide groove, and the slider is connected to the first support plate via the elastic element. The first slide groove and the elastic element realize a sliding connection between the slider and the first support plate.

[0010] Furthermore, the support rod is provided with an oblique brace, one end of which is connected to the support rod, and the other end of which is connected to the first support plate. The oblique brace can disperse the force transmitted to the first support plate, thereby improving the stability and bearing capacity of the present invention.

[0011] Furthermore, the second support is provided with a second slide groove, the second slide groove is sleeved with a second bidirectional screw rod, and the support member is threadedly connected to the second bidirectional screw rod. The movement of the support member is achieved by rotating the second slide groove and the second bidirectional screw rod, thereby facilitating the adjustment of the support surface range of the support member.

[0012] Furthermore, one end of the second bidirectional screw rod is connected to a hand wheel, which facilitates the control of the rotation of the second bidirectional screw rod.

[0013] Furthermore, the support rod is provided with threads, and the support rod is connected to the support column through the threads. The threaded connection enables the support rod to move upward on the support column when rotating, thereby causing the support member connected to the upper portion to move upward.

[0014] Furthermore, universal wheels are provided below the base, which facilitate the movement of the device.

[0015] Furthermore, the side of the support column is connected to a support frame, and a rotating rod is connected to the support frame, and the rotating rod is connected to the support rod through a worm gear structure; a motor is also provided on the support frame, and the motor is connected to the rotating rod through a gear set structure. The rotating rod is driven to rotate by the motor, and the support rod is rotated by the transmission structure of the worm gear. Since the support rod can gradually rise when rotating, the work efficiency is improved by the drive of the motor.

[0016] Furthermore, the ground support fixing assembly includes a first bidirectional screw rod, which is sleeved on the base, and transmission members are provided at both ends of the rotating rod, and the first bidirectional screw rod is connected to the rotating rod through the transmission members; a pair of transmission cylinders are also sleeved on the first bidirectional screw rod, and push-pull rods are connected to the two sides of the transmission cylinder, and a plurality of fixed supports are connected to the push-pull rods. The rotation of the second bidirectional screw rod is driven by the rotating rod to move the transmission cylinder, thereby realizing the movement of the fixed support, so that the fixed support extends out of the base and supports the ground, realizing that the device can be firmly supported by the ground at the same time during the rising process, avoiding the work steps of fixing and then rising in the existing device, and improving work efficiency.

[0017] Furthermore, one end of the fixed support away from the push-pull rod is connected with a fixed plate, and the fixed plate increases the support area with the ground and improves the stability of the support.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The slider is connected by sliding on the first support plate, and the slider is connected to the support plate by using the connecting rod, so that the plane of the second support plate can be adjusted, and then the support plane of the support member can be rotated and adjusted, which can better fit the supported part and improve the support effect.

[0020] 2. The rotating rod drives the second bidirectional screw to rotate, thereby moving the transmission cylinder, and then realizing the movement of the fixed support, so that the fixed support extends out of the base and supports the ground, thereby realizing that the device can be firmly supported by the ground during the rising process, avoiding the working steps of the existing device that needs to be fixed before rising, and improving work efficiency.

[0021] 3. The second slide groove enables the support member to move in the slide groove when the second bidirectional screw rod rotates, thereby facilitating adjustment of the support range of the support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A structural schematic diagram of a repair and reinforcement device for a concrete structure according to the present invention;

[0023] Figure 2 An exploded view of the installation of support rods and support columns of a repair and reinforcement device for a concrete structure according to the present invention;

[0024] Figure 3 It is a structural schematic diagram of a ground support fixing assembly of a repair and reinforcement device for a concrete structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the installation of a first support plate and a second support plate of a repair and reinforcement device for a concrete structure of the present invention;

[0026] Figure 5 This is a schematic structural diagram of a first support plate of a repair and reinforcement device for a concrete structure according to the present invention;

[0027] Figure 6 This is a schematic structural diagram of a second support plate of a repair and reinforcement device for a concrete structure according to the present invention.

[0028] In the figure: 1. base; 2. support column; 3. support rod; 301. lower part of support rod; 302. worm gear; 303. upper part of support rod; 4. support frame; 5. rotating rod; 501. second gear; 6. transmission member; 7. first support plate; 8. second support plate; 9. support member; 10. diagonal support; 11. slider; 12. connecting rod; 13. motor; 1301. first gear; 14. first bidirectional screw rod; 15. second bidirectional screw rod; 16. transmission cylinder; 17. push-pull rod; 18. fixed support; 19. fixed sleeve; 20. fixed plate; 21. first slide groove; 22. second slide groove; 23. hand wheel; 24. elastic element; 25. connecting block; 26. universal wheel; 27. connecting plate; 28. movable seat; 29. ​​fixing rod. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Combine the following Figures 1 to 6 , through specific embodiments and application scenarios, a repair and reinforcement device for a concrete structure provided by an embodiment of the present invention is described in detail.

[0033] A repair and reinforcement device for a concrete structure comprises a base 1, on which a pair of support columns 2 are arranged, above which a liftable support rod 3 is connected, above which a first support plate 7 is also connected, on which a slider 11 is arranged, the first support plate 7 is slidably connected to the slider 11, above which a second support plate 8 is arranged, on which a connecting rod 12 is arranged, the second support plate 8 is connected to the slider through the connecting rod 12, and a movable support member 9 is connected to the second support plate 8; a ground support fixing assembly which is synchronously linked with the support rod 3 is also arranged in the base 1.

[0034] Specifically, Figure 1 As shown, a pair of support columns 2 are fixedly connected above the base 1, and a lifting support rod 3 is connected to the support column 2. The lifting support rod 3 is suitable for reinforcing beams of different heights, thereby improving the applicability of the device. The ground support fixing assembly can be supported on the ground to prevent the device from moving during operation and affecting the reinforcement work.

[0035] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, a first support plate 7 is fixedly connected above the support rod 3, two sliders 11 are slidably connected to the first support plate 7, a connecting rod 12 is rotatably connected to the slider 11, and a connecting block 25 is rotatably connected to one end of the connecting rod 12 away from the slider 11. The connecting block 25 is fixedly connected to the lower surface of the second support plate 8, so that when the second support plate 8 needs to be adjusted in plane, the connecting block 25 deflects and drives one end of the connecting rod 12 to move, and the other end follows the movement to make the slider 11 slide, thereby realizing the plane deflection adjustment of the second support plate 8. A pair of movable support members 9 are arranged on the first support plate 7, preferably, the support member 9 is L-shaped, and the horizontal section of the support member 9 serves as the support surface. The support surface of the support member 9 can support the concrete beam to bond steel, and by adjusting the spacing between the pair of support members 9, it can adapt to the width of different beams, thereby improving the applicability of the present invention.

[0036] Because the concrete beam has a certain inclination on the supported surface due to construction errors or the adhesion of the concrete beam to the steel, and the existing support device cannot adjust the deflection of the support surface, the support surface of the support component cannot fit well with the supported surface, thereby affecting the fit between the concrete steel and the concrete beam and affecting the reinforcement effect. The present invention realizes the deflection adjustment of the support surface of the support member 9 through the cooperation of the connecting block 25, the connecting rod 12, and the slider 11, which can better fit the supported part and improve the support effect.

[0037] Furthermore, if Figure 4 and Figure 5 As shown, a first slide groove 21 is provided on the first support plate 7, and the slider 11 is located in the first slide groove 21. Two sliders 11 are provided in the first slide groove 21, and two elastic elements 24 are correspondingly provided in the first slide groove 21. Preferably, the elastic element 24 is a spring. One end of the elastic element 24 is connected to the slider 11, and the other end is connected to the inner wall of the first slide groove 21. The sliding connection between the slider 11 and the first support plate 7 is realized through the first slide groove 21 and the elastic element 24.

[0038] Furthermore, if Figure 4 and Figure 6 As shown, a second slide groove 22 is provided on the second support plate 8, and a second bidirectional screw 15 is sleeved in the second slide groove 22, and the second bidirectional screw 15 is connected to the second support plate 8 by a bearing. The end of the support member 9 is located in the second slide groove 22 and is threadedly connected to the second bidirectional screw 15. Through the limiting effect of the second slide groove 22, the support member 9 can be moved when the second bidirectional screw 15 rotates. A pair of support members 9 are connected to the second bidirectional screw 15. The two support members 9 can be moved closer and farther away by the forward and reverse rotation of the second bidirectional screw 15, so as to facilitate the adjustment of the support range of the support surface of the support member 9 according to the width of the beam, thereby improving the applicability of the device.

[0039] Furthermore, if Figure 6 As shown, one end of the second bidirectional screw rod 15 extends out of the second slide slot 22 and is connected to a hand wheel 23 , and the hand wheel 23 is used to conveniently control the rotation of the second bidirectional screw rod 15 , thereby realizing the movement of the support member 9 .

[0040] In this embodiment, if Figure 2 As shown, the support rod 3 includes a support rod lower portion 301, a worm gear 302 and a support rod upper portion 303, the upper end of the support rod lower portion 301 is fixedly connected to the lower end of the worm gear 302, and the upper end of the worm gear 302 is rotatably connected to the lower end of the support rod upper portion 303.

[0041] Furthermore, if Figure 2As shown, the lower part 301 of the support rod is provided with a thread, the support column 2 is provided with an internal thread, and the support rod 3 is connected to the support column 2 through a thread. The threaded connection enables the support rod 3 to move upward on the support column 2 when it rotates, thereby allowing the upper connected support member 9 to move up to reach the target height.

[0042] Furthermore, if Figure 1 As shown, moving seats 28 are fixedly connected to both sides of the base 1, and universal wheels 26 are connected below the moving seats 28, so that the device can be easily moved through the universal wheels 26.

[0043] In this embodiment, a second gear 501 is fixedly connected to the rotating rod 5, and worms are connected to both sides of the second gear 501. When the rotating rod 5 rotates, the worm engages with the worm wheel 302 to rotate the support rod 3, thereby realizing the lifting of the support rod 3.

[0044] Furthermore, if Figure 1 and Figure 2 As shown, an L-shaped support frame 4 is fixedly connected to one side of the support column 2, and a motor placement box is fixedly connected to the support frame 4, and the motor 13 is located in the motor placement box. The output end of the motor 13 extends out of the horizontal section of the support frame 4 and is connected to the first gear 1301. Through the gear set structure of the first gear 1301 and the second gear 501, the motor can drive the rotating rod 5 to rotate. A rotating rod connecting block 25 is fixedly connected to the support frame 4, and the rotating rod 5 is sleeved on the rotating rod connecting block 25, and the rotating rod connecting block 25 is connected to the bearing of the rotating rod 5. The rotating rod 5 is driven to rotate by the motor 13, and then the support rod 3 is rotated by the worm gear transmission, thereby improving the working efficiency.

[0045] Furthermore, if Figure 1 , Figure 3 As shown, the ground support fixing assembly includes a first bidirectional screw rod 14, which is sleeved on the base 1, and the base 1 is connected to the first bidirectional screw rod 14 through a bearing. Transmission members 6 are wound around the two ends of the rotating rod 5 and the two ends of the first bidirectional screw rod 14. Preferably, the transmission member 6 is a crawler, and the rotating rod 5 can drive the first bidirectional screw rod 14 to rotate through the transmission member 6. A pair of transmission cylinders 16 are threadedly connected to the first bidirectional screw rod 14, and the two transmission cylinders 16 are symmetrically arranged on the first bidirectional screw rod 14. Push-pull rods 17 are fixedly connected to both sides of the transmission cylinder 16, and each push-pull rod 17 is rotatably connected to a fixed support 18. The two fixed supports 18 on the same side are staggered and rotatably connected at the staggered intersection position. When the first bidirectional screw rod 14 rotates, the two transmission cylinders 16 approach each other, and the transmission cylinder 16 drives the push-pull rod 17 to move, thereby driving one end of the fixed support 18 to move and gradually extend out of the lower part of the base 1, and when the fixed support 18 contacts the ground, it can stably support the device of the present invention.

[0046] Furthermore, if Figure 3As shown, one end of the fixed support 18 away from the push-pull rod 17 is connected to a fixed plate 20, a sliding groove is provided on the fixed plate 20, and one end of the fixed support 18 is slidably connected to the fixed plate 20 through the sliding groove. As the fixed support 18 moves, the fixed plate 20 gradually extends out of the lower part of the base 1 and contacts the ground, which can stably support the device of the present invention. The fixed plate 20 increases the support area with the ground, thereby improving the stability of the support.

[0047] In this embodiment, a fixing sleeve 19 is connected to the first bidirectional screw rod 14, and the fixing sleeve 19 is connected to the first bidirectional screw rod 14 through a bearing. Both sides of the fixing sleeve 19 are fixedly connected to fixing rods 29, and the fixing rods 29 are connected to the inner arm of the base 1, and the stability of the connection between the first bidirectional screw rod 14 and the base 1 is improved by the fixing rods 29.

[0048] The present invention is divided into two actions during use: one is the lifting and lowering of the support member linked with the ground support fixing assembly, and the other is the adjustment of the support surface of the support member.

[0049] In the process of the support member rising to the target height, the present invention controls the rotation of the rotating rod 5 through a motor 13, and the rotating rod 5 drives the support rod 3 to rotate and rise through the worm gear structure, thereby realizing the rise of the support member 9; while the rotating rod 5 rotates, the rotating rod 5 drives the first bidirectional screw 14 to rotate using the transmission member 6, so that a pair of transmission cylinders 16 approach each other and the fixed support 18 moves, thereby realizing the fixed plate 20 extending out of the base 1 and supporting the ground. In the existing lifting assembly or ground support fixing assembly, a separate motor needs to be set to drive the assembly respectively. The present invention uses a motor 13 to simultaneously realize the lifting of the support member 9 and the support of the ground by the ground support fixing assembly, saving the number of motors 13.

[0050] After the support member 9 rises to the point where the support surface of the support member 9 contacts the concrete beam steel, the fixing plate 20 is already in contact with the ground. At this time, the support member 9 can effectively support the concrete beam steel, and with the cooperation of the slider 11, the connecting rod 12 and the connecting block 25, the reaction force of the concrete beam causes the support member 9 to adaptively deflect and adjust, thereby solving the problem that the support surface deflection cannot be adjusted in the existing reinforcement device.

[0051] It should be noted that the working principle of the present invention is:

[0052] In the initial state, the fixing plate 20 is located inside the base 1 and does not contact the ground.

[0053] When it is necessary to support the concrete beam bonded with steel and the concrete beam, the device of the present invention is moved as a whole to a suitable position through the universal wheel 26, and the motor 13 is started. The first gear 1301 connected to the output end of the motor 13 drives the second gear 501 provided on the rotating rod 5 to rotate, thereby rotating the rotating rod 5. The worm gear provided on the rotating rod 5 drives the worm wheel 302 provided on the support rod 3 to rotate. Since the worm wheel 302 is fixedly connected to the lower part 301 of the support rod and is rotationally connected to the upper part 303 of the support rod, and at the same time, the lower part 301 of the support rod is threadedly connected to the support column 2, when the lower part 301 of the support rod rotates, the support rod 3 moves upward as a whole while the upper part 303 of the support rod does not rotate. At the same time, since the rotating rod 5 is connected to the first bidirectional screw rod 14 through the transmission member 6, the rotation of the rotating rod 5 can drive the first bidirectional screw rod 14 to rotate. When the first bidirectional screw rod 14 rotates forward, the two transmission cylinders 16 connected to the first bidirectional screw rod 14 approach each other, and the transmission cylinder 16 drives the push-pull rod 17 to move, and the push-pull rod 17 moves the fixed support 18, thereby driving the fixed plate 20 to move out of the lower part of the base 1 and support the ground. After the fixed plate 20 contacts the ground, as the fixed support 18 continues to move, the device is lifted, and when the support member 9 rises to the target height, the device also stably supports the ground, thereby improving work efficiency. After the support member 9 supports the concrete beam to bond the steel, subsequent reinforcement work can be carried out.

[0054] In addition, when the size of the support plate needs to be adjusted according to the width of the concrete beam, the staff can rotate the second bidirectional screw 15 by turning the hand wheel 23 before supporting. Since one end of the support member 9 is located in the second slide groove 22 of the second support plate 8, when the second bidirectional screw 15 rotates, the two support members 9 are moved away from or close to each other in the second slide groove 22, thereby forming a wider or narrower support surface to adapt to beam planes of different widths.

[0055] At the same time, when the support member 9 is supporting, the second support plate 8 can be deflected through the cooperation of the connecting block 25, the connecting rod 12, the slider 11 and the elastic element 24, so that the supporting surface of the support member 9 can be adaptively adjusted, so as to better fit the supported part and improve the supporting effect.

[0056] When the reinforcement work is completed or it is necessary to move to the next reinforcement location, the motor 13 is controlled to reverse, and the first gear 1301 drives the second gear 501 to rotate in the opposite direction, so that the support rod 3 descends. At the same time, the first bidirectional screw rod 14 rotates in the opposite direction. At this time, the two transmission cylinders 16 move away from each other, so that the fixing plate 20 is retracted into the base 1, and the device returns to its initial state, which is convenient for movement or next use.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A repair and reinforcement device for a concrete structure, characterized in that: The invention comprises a base (1), wherein a pair of support columns (2) are arranged on the base (1), a support rod (3) which can be raised and lowered synchronously is connected to the upper part of the support column (2), a first support plate (7) is connected to the upper part of the support rod (3), a slider (11) is arranged on the first support plate (7); a second support plate (8) is arranged above the first support plate (7), a connecting rod (12) is arranged on the slider (11), and the second support plate (8) is connected to the slider (11) via the connecting rod (12); a movable support member (9) is connected to the second support plate (8); and a ground support fixing component which is synchronously linked with the support rod (3) is also arranged in the base (1).

2. A repair and reinforcement device for a concrete structure according to claim 1, characterized in that: A first slide groove (21) is provided on the first support plate (7), the sliding block (11) is located in the first slide groove (21), an elastic element (24) is also provided in the first slide groove (21), and the sliding block (11) is connected to the first support plate (7) via the elastic element (24).

3. A repair and reinforcement device for a concrete structure according to claim 1, characterized in that: The support rod (3) is provided with an oblique brace (10), one end of the oblique brace (10) is connected to the support rod (3), and the other end of the oblique brace (10) is connected to the first support plate (7).

4. A repair and reinforcement device for a concrete structure according to claim 1, characterized in that: The second support plate (8) is provided with a second slide groove (22), a second bidirectional screw rod (15) is sleeved in the second slide groove (22), and the support member (9) is threadedly connected to the second bidirectional screw rod (15).

5. A repair and reinforcement device for a concrete structure according to claim 4, characterized in that: One end of the second bidirectional screw rod (15) is connected to a hand wheel (23).

6. A repair and reinforcement device for a concrete structure according to claim 1, characterized in that: The support rod (3) is provided with a thread, and the support rod (3) is connected to the support column (2) via the thread.

7. A repair and reinforcement device for a concrete structure according to claim 1, characterized in that: Universal wheels (26) are provided below the base (1).

8. The repair and reinforcement device for concrete structure according to claim 1, characterized in that: A support frame (4) is connected to the side surfaces of the pair of support columns (2), a rotating rod (5) is connected to the support frame (4), and the rotating rod (5) is connected to the support rod (3) via a worm gear structure; a motor (13) is also provided on the support frame (4), and the motor (13) is connected to the rotating rod (5) via a gear set structure.

9. A repair and reinforcement device for a concrete structure according to claim 8, characterized in that: The ground support fixing assembly comprises a first bidirectional screw rod (14), the first bidirectional screw rod (14) being sleeved on the base (1), transmission members (6) being provided at both ends of the rotating rod (5), the first bidirectional screw rod (14) and the rotating rod (5) being connected via the transmission members (6); a pair of transmission cylinders (16) being sleeved on the first bidirectional screw rod (14), push-pull rods (17) being connected on both sides of the transmission cylinder (16), and a plurality of fixing supports (18) being connected to the push-pull rods (17).

10. A repair and reinforcement device for a concrete structure according to claim 9, characterized in that: One end of the fixing support (18) away from the push-pull rod (17) is connected to a fixing plate (20).

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