A reinforcing device for building beams

Abstract

The application relates to a reinforcing device for a building beam, belonging to the technical field of house building, which comprises a lifting block, the top wall of the lifting block can abut against the building beam, two oppositely arranged baffle plates are fixedly connected to the top of the lifting block, the two baffle plates are arranged at intervals, the opposite sides of the two baffle plates are each provided with a clamping plate capable of clamping the building beam, the lifting block is further connected with a driving assembly capable of driving the two clamping plates to relatively move and clamp the building beam, the bottom wall of the lifting block is provided with a lifting hydraulic cylinder capable of driving the lifting block to move, the lifting hydraulic cylinder can be connected with the driving assembly and can drive the two clamping plates to clamp the building beam through the driving assembly. The application has the effect of being capable of supporting and reinforcing building beams of different sizes.

Description

Technical Field

[0001] This application relates to the technical field of building construction, and in particular to a reinforcement device for building beams. Background Technology

[0002] Currently, during the construction of houses, beams are generally used as the main support for the house. The beams, made of concrete and reinforced steel, make the house more sturdy during subsequent use.

[0003] However, for houses that have been used for a long time, it is necessary to reinforce them. During the reinforcement process, the support and reinforcement of the roof beams, which are the main supporting components of the house, are particularly important.

[0004] Currently, there are generally two ways to reinforce roof beams. One is to wrap the exterior of the beam with multiple connecting plates to reduce the deformation of the beam itself. However, this method cannot be used to reinforce the beam when the end of the beam falls off at the connection with other walls.

[0005] To reduce the occurrence of the above phenomena, a method of using pillars and support plates is adopted. The support plates semi-enclose the beams, and the pillars connect the bottom of the support plates to the ground to support the beams. This ensures that the beams are supported even when they separate from adjacent walls, making them less likely to collapse. However, currently, the support plates used to connect to the beams are mostly of fixed size. This means that in actual use, they need to be manufactured according to the specific dimensions of the beams, which can delay the optimal time for supporting the beams. Summary of the Invention

[0006] In order to support and reinforce beams of different sizes, this application provides a reinforcement device for building beams.

[0007] The technical solution for a building beam reinforcement device provided in this application is as follows:

[0008] A reinforcement device for building beams includes a lifting block, the top wall of which can abut against the beam. Two opposing baffles are fixedly connected to the top of the lifting block, the two baffles are spaced apart, and clamping plates capable of clamping the beam are provided on opposite sides of the two baffles. The lifting block is also connected to a drive assembly capable of driving the two clamping plates to move relative to each other to clamp the beam. The bottom wall of the lifting block is provided with a lifting hydraulic cylinder capable of driving the lifting block to move. The lifting hydraulic cylinder can be connected to the drive assembly and can drive the two clamping plates to clamp the beam through the drive assembly.

[0009] By adopting the above technical solution, when it is necessary to reinforce the roof beam, the lifting block is placed on the lower side of the roof beam. Then, the lifting hydraulic cylinder is activated to drive the lifting block to move upward. After the lifting block moves upward, it abuts against the lower side of the roof beam. Then, the drive component drives the two clamping plates to move, thereby clamping the roof beam with the two clamping plates and thus realizing the reinforcement process of the roof beam. This reduces the occurrence of roof beam shape damage or breakage at the connection between the roof beam and the adjacent wall, which would lead to roof beam instability and difficulty in supporting the house.

[0010] Optionally, the drive assembly includes a drive screw connected to the opposite sides of the two clamping plates. Each drive screw is rotatably fitted with a drive gear on the side of the adjacent baffle away from the other baffle. Each drive gear is engaged with a median wheel on its lower side. Each median wheel is engaged with a drive rack on one side. An abutment block is slidably inserted into the top wall of the lifting block in the vertical direction. The abutment block is positioned so that the side of each clamping plate is inclined from bottom to top towards the middle of the two clamping plates. Each drive rack is connected to the abutment block and can move in the vertical direction under the drive of the abutment block.

[0011] By adopting the above technical solution, during the upward movement of the lifting block, the lifting block drives the abutting block to move. When the abutting block abuts against the bottom wall of the roof beam, as the lifting block continues to move upward, the abutting block moves downward. During the downward movement, the abutting block drives the drive rack to move. During the movement, the drive rack drives the intermediate wheel to rotate. During the rotation of the intermediate wheel, the drive gear rotates. During the rotation of the drive gear, the drive screw moves, thereby enabling the two drive screws to drive the two clamping plates to move towards the roof beam, realizing the clamping process of the roof beam through the two clamping plates.

[0012] Optionally, a support block is provided on the lower side of the lifting block, the lifting hydraulic cylinder is embedded in the support block from top to bottom and the piston rod extends upward to connect with the lifting block, and a support component is also provided between the lifting block and the support block to further support the lifting block.

[0013] By adopting the above technical solution, the presence of the support component allows the lifting block to be further supported when the lifting hydraulic cylinder moves it to the appropriate position. This reduces the burden on the lifting hydraulic cylinder in supporting the lifting block and also reduces the problem of the lifting block falling off when the lifting hydraulic cylinder is damaged, thus making it difficult to provide stable support for the roof beam.

[0014] Optionally, the support assembly includes a lifting screw fixedly connected to the lower end of the abutment block. A drive gear is threaded onto one end of the lifting screw away from the abutment block. The drive gear meshes with multiple support gears. Each support gear is penetrated in the middle and threadedly connected to a support screw. Each support screw can penetrate the bottom wall of the lifting block and abut against the upper surface of the support block under the drive of the support gear.

[0015] By adopting the above technical solution, after the abutting block abuts against the roof beam, as the lifting hydraulic cylinder drives the lifting block to continue moving upward, the abutting block moves downward relative to the lifting block. During the downward movement of the abutting block, the lifting screw moves downward, and during the downward movement of the lifting screw, the drive gear rotates. The drive gear drives multiple support gears to rotate, and during the rotation of the multiple support gears, the support screw moves downward, so that the lower end of the support screw can abut against the support block, thereby realizing the process of supporting the lifting block through the support screw.

[0016] Optionally, a limiting sleeve is provided on the outer side of the support block and the lifting block, which can simultaneously abut against the side wall of the lifting block and the support block.

[0017] By adopting the above technical solution, the presence of the limiting sleeve reduces the phenomenon that the lifting block tilts during the process of the lifting hydraulic cylinder driving the lifting block to move, thus preventing the piston rod of the lifting hydraulic cylinder from being damaged by radial force.

[0018] Optionally, the upper end of the limiting sleeve is provided with a groove around the inner wall of the limiting sleeve, and a secondary limiting cylinder that can abut against the side wall of the support block is slidably connected inside the groove. The secondary limiting cylinder is connected to a transmission component, which is connected to the lifting block and can drive the secondary limiting cylinder to move synchronously while the lifting block moves.

[0019] By adopting the above technical solution, due to the presence of the secondary limiting cylinder, and the fact that the secondary limiting cylinder can move with the lifting block while abutting against it, the range of limiting the lifting block can be larger, and the materials required to manufacture a larger limiting sleeve are also saved.

[0020] Optionally, the transmission assembly includes a drive bevel gear threaded onto the outside of each of the support screws, a driven bevel gear meshing on one side of each drive bevel gear, a transmission gear coaxially drivingly connected to one side of each driven bevel gear, and each transmission gear having its side near the adjacent lifting block sidewall capable of passing through the lifting block sidewall. The secondary limiting cylinder has a movable rack meshing with the transmission gear fixedly connected to its side near each transmission gear.

[0021] By adopting the above technical solution, during the downward movement of the abutting block relative to the lifting block, multiple support screws move under the drive of the abutting block. During the movement of the support screws, the driving bevel gear rotates, the driving bevel gear rotates, the driven bevel gear rotates, the connected transmission gear rotates, the transmission gear rotates, the moving rack moves, and the moving rack moves, thus realizing the process of the secondary limit cylinder moving with the lifting block while the lifting block moves.

[0022] Optionally, a snap-fit ​​assembly capable of limiting the relative position between the limiting sleeve and the secondary limiting cylinder is further connected between the limiting sleeve and the secondary limiting cylinder.

[0023] By adopting the above technical solution, the presence of the snap-fit ​​component reduces the phenomenon that the upper side of the lifting block tilts during movement due to the lack of a limit due to the downward movement of the secondary limit cylinder under the action of gravity as the secondary limit cylinder moves upward with the lifting block.

[0024] Optionally, the snap-fit ​​assembly includes multiple snap-fit ​​ratchet blocks arranged vertically on the side of the secondary limiting cylinder near the limiting sleeve, and multiple receiving ratchet blocks that can snap with the multiple snap-fit ​​ratchet blocks are fixedly connected to the inner wall of the limiting sleeve near the secondary limiting cylinder.

[0025] By adopting the above technical solution, during the process of the lifting block driving the secondary limiting cylinder to move upward, the locking ratchet block connected to the secondary limiting cylinder does not abut against the receiving ratchet block. Then, when the secondary limiting cylinder moves to the appropriate position, under the action of gravity, when the secondary limiting cylinder moves downward, the locking ratchet block abuts against the receiving ratchet block, thereby realizing the locking of the secondary limiting cylinder and limiting the vertical position of the secondary limiting cylinder.

[0026] Optionally, each of the two clamping plates is fixedly connected to a clamping pad on one side that can abut against the roof beam.

[0027] By adopting the above technical solution, the presence of the clamping pad allows the clamping plate to contact the beam during the clamping process, thereby reducing the wear on the paint and other substances on the beam sidewall surface when the clamping plate contacts the beam sidewall.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] The lifting block is moved by the lifting hydraulic cylinder, so that the abutment block abuts against the roof beam. As the abutment block moves downward relative to the lifting block, the abutment block drives the two clamping plates to clamp the roof beam, thereby achieving a full reinforcement process for the roof beam, making the roof beam more stable.

[0030] The presence of the support components allows multiple support screws to move downwards to support the lifting block as it moves upwards and the abutment block moves downwards relative to the lifting block, thus making the lifting block more stable when supporting the roof beam.

[0031] By setting limiting sleeves and secondary limiting sleeves on the outside of the lifting block and the support block, the relative position between the driving hydraulic cylinder and the lifting block can be restricted, thereby reducing the trouble caused by the lifting block tilting during the upward movement of the lifting block, which makes it difficult for the lifting hydraulic cylinder to provide stable support for the roof beam. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0033] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this application.

[0034] Figure 3 yes Figure 2 A partially enlarged schematic diagram of structure A in the middle.

[0035] Figure 4 It is a cross-sectional view that highlights the connection between the transmission components and the support screw.

[0036] Explanation of reference numerals in the attached drawings: 1. Lifting block; 11. Baffle; 12. Abutting block; 13. Abutting groove; 2. Clamping plate; 21. Clamping pad; 3. Drive assembly; 31. Drive screw; 32. Drive gear; 33. Intermediate wheel; 34. Drive rack; 35. Connecting plate; 4. Lifting hydraulic cylinder; 5. Support block; 6. Support assembly; 61. Lifting screw; 62. Drive gear; 63. Support screw; 631. Limiting block; 64. Support gear; 7. Limiting sleeve; 71. Secondary limiting sleeve; 8. Transmission assembly; 81. Driven bevel gear; 82. Driven bevel gear; 83. Transmission shaft; 84. Transmission gear; 85. Moving rack; 9. Snap-fit ​​assembly; 91. Snap-fit ​​ratchet block; 92. Receiving ratchet block. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail.

[0038] This application discloses a reinforcement device for building beams, referring to... Figure 1The device includes a vertically arranged lifting block 1 with a rectangular cross-section. Both sides of the top wall of the lifting block 1 are fixedly connected to baffles 11, and both baffles 11 are perpendicular to the top wall of the lifting block 1.

[0039] Reference Figure 2 and Figure 3 Each of the two baffles 11 has a clamping plate 2 on its opposite sides, and each clamping plate 2 is arranged parallel to the long L-shaped side of the adjacent baffle 11. A clamping pad 21, made of a flexible material, is fixedly connected to the side of each clamping plate 2 closest to the other clamping plate 2. A driving assembly 3 is connected to the opposite sides of the two clamping plates 2, allowing the two clamping plates 2 to move closer to or further away from each other under the drive of the driving assembly 3.

[0040] The lower side of the lifting block 1 is also provided with a lifting hydraulic cylinder 4. The lifting hydraulic cylinder 4 is vertically arranged with the piston rod pointing upward. The piston rod of the lifting hydraulic cylinder 4 is fixedly connected to the middle position of the bottom wall of the lifting block 1.

[0041] When it is necessary to reinforce the roof beam, firstly, the lifting hydraulic cylinder 4 is activated, which drives the lifting block 1 to move upward, so that the top wall of the lifting block 1 abuts against the lower side of the roof beam. Then, the drive assembly 3 is activated, and under the drive of the drive assembly 3, the two clamping plates 2 move towards each other, thereby supporting the sides and bottom of the roof beam, and thus realizing the reinforcement process of the roof beam.

[0042] The beam is clamped and supported by the two clamping plates 2 and the bottom of the lifting block 1, and the lifting block 1 is supported by the lifting hydraulic cylinder 4. This makes the beam more stable and reinforced during the reinforcement process. When the end of the beam breaks and separates from the adjacent wall, the lifting block 1 and the clamping plates 2 can still maintain the beam in its original position, thus achieving the supporting function of the beam for the house.

[0043] The drive assembly 3 includes a drive screw 31 fixedly connected to the side of each clamping plate 2 near the adjacent baffle 11. The end of each drive screw 31 away from the connected clamping plate 2 passes through the adjacent baffle 11 and is slidably connected to it. Each drive screw 31 has a drive gear 32 threadedly sleeved on the side of the connected baffle 11 away from the adjacent clamping plate 2. One side of each drive gear 32 is rotatably connected to the adjacent baffle 11. A retainer 33 meshes with the lower side of each drive gear 32, and each retainer 33 is rotatably connected to the adjacent baffle 11.

[0044] Each gear 33 has a drive rack 34 meshing on one side, and a connecting plate 35 is fixedly connected to the bottom of each drive rack 34. Each connecting plate 35 has a lifting block 1 through it on the side away from the drive rack 34. The lifting block 1 has a groove on the side close to each connecting plate 35 for the connecting plate 35 to be inserted and moved up and down in the vertical direction.

[0045] The top of the lifting block 1 has a downward-facing abutment groove 13, and an abutment block 12 is slidably connected inside the abutment groove 13. The abutment block 12 is set in the shape of a quadrangular frustum, with the apex of the quadrangular frustum facing upward and able to abut against the bottom wall of the roof beam. Each groove is connected to the interior of the abutment groove 13, and one end of each connecting plate 35 is fixedly connected to the bottom wall of the abutment block 12.

[0046] During the upward movement of the lifting block 1 driven by the lifting hydraulic cylinder 4, the abutment block 12 first abuts against the roof beam, and then the abutment block 12 moves downward. During the downward movement of the abutment block 12, the connecting plate 35 moves downward. During the downward movement of the connecting plate 35, the connecting plate 35 drives the drive rack 34 to move downward. During the downward movement of the drive rack 34, the drive rack 34 drives the intermediate wheel 33 to rotate. During the rotation of the intermediate wheel 33, the drive gear 32 meshes with it and rotates. During the rotation of the drive gear 32, the clamping plate 2 moves away from the connected baffle 11, so that the two clamping plates 2 can clamp the roof beam.

[0047] A support block 5 is also provided on the lower side of the lifting block 1. The support block 5 is vertically arranged and its cross-section is a rectangle with the same shape as the lifting block 1. A groove is formed downward in the middle of the support block 5, and the lifting hydraulic cylinder 4 is disposed inside the groove. A support assembly 6 is provided between the support block 5 and the lifting block 1. The support assembly 6 is connected to the lifting block 1 and can support the relative position between the support block 5 and the lifting block 1.

[0048] Because of the presence of the support component 6, after the lifting hydraulic cylinder 4 moves the lifting block 1 to the designated position, the lifting block 1 can be supported by the support component 6, thereby making the lifting block 1 more stable in the process of supporting the roof beam.

[0049] The support assembly 6 includes a lifting screw 61 fixedly connected to the middle position of the lower side of the abutment block 12. The lifting screw 61 is vertically downward and slides against the inner wall of the lifting block 1. The end of the lifting screw 61 away from the abutment block 12 is threaded with a drive gear 62. The drive gear 62 is rotatably connected to the inside of the lifting block 1 and meshes with four support gears 64. The four support gears 64 are evenly distributed around the center line of the drive gear 62, and the four support gears 64 are arranged one-to-one with the four side walls of the lifting block 1.

[0050] Each support gear 64 is threaded through and connected to a support screw 63. Each support screw 63 is vertically positioned and slidably inserted into the lifting block 1, with its lower end extending out of the lifting block 1 to abut against the upper surface of the lower support block 5. A cubic limiting block 631 is fixedly connected to the upper end of each support screw 63. The lifting block 1 has a groove inside for each limiting block 631 to move vertically, thereby restricting the rotation of the support screw 63 through the limiting block 631.

[0051] After the lifting hydraulic cylinder 4 drives the abutment block 12 to abut against the roof beam, the lifting hydraulic cylinder 4 continues to operate, causing the abutment block 12 to move downward. During the downward movement of the abutment block 12, the lifting screw 61 moves downward. During the downward movement of the lifting screw 61, the connected drive gear 62 rotates. During the rotation of the drive gear 62, the four meshed support gears 64 rotate. During the rotation of each support gear 64, the connected support screw 63 moves downward. During the downward movement of the support screw 63, it abuts against the upper surface of the support block 5, thereby realizing the support process for the lifting block 1.

[0052] A limiting sleeve 7 is fitted around the outer side of the support block 5 and the lifting block 1. The limiting sleeve 7 is vertically arranged and its inner wall can simultaneously abut against the side walls of the support block 5 and the lifting block 1. A groove is formed around the inner wall of the limiting sleeve 7 at the upper end of the inner wall. A secondary limiting cylinder 71 slides and abuts against the inside of the groove, and the inner wall of the secondary limiting cylinder 71 can abut against the adjacent lifting block 1.

[0053] Reference Figure 4 A transmission component 8 is also connected between the secondary limiting cylinder 71 and the lifting block 1. The transmission component 8 can drive the secondary limiting cylinder 71 to move with the lifting block 1 during the movement of the lifting block 1. During the movement, the outer wall of the secondary limiting cylinder 71 slides against the inner wall of the groove of the limiting sleeve 7.

[0054] The presence of the limiting sleeve 7 and the secondary limiting sleeve 71 restricts the relative position between the lifting block 1 and the support block 5, thereby making the movement of the lifting block 1 more stable when the lifting hydraulic cylinder 4 drives it. Furthermore, during the movement of the lifting block 1, the secondary limiting sleeve 71 can also move with the lifting block 1 via the transmission assembly 8, thus achieving the restriction of the horizontal relative position between the lifting block 1 and the support block 5 through the cooperation of the secondary limiting sleeve 7 and the limiting sleeve 7.

[0055] The transmission assembly 8 includes a drive bevel gear 81 sleeved on the outside of each support screw 63, and each drive bevel gear 81 is threadedly connected to the support screw 63. A driven bevel gear 82 meshes with one side of each drive bevel gear 81, and a drive shaft 83 is passed through and fixedly connected to the middle of each driven bevel gear 82. A drive gear 84 is fixedly connected to the end of each drive shaft 83 away from the connected driven bevel gear 82. An opening is provided on the side of the lifting block 1 near each drive gear 84 for the drive gear 84 to pass through.

[0056] The secondary limiting cylinder 71 has a groove in the vertical direction on one side near each transmission gear 84. A movable rack 85 is fixedly connected inside each groove, and one side of each movable rack 85 can mesh with the adjacent transmission gear 84.

[0057] When the lifting block 1 moves upward, the support screw 63 moves downward. During the movement, the support screw 63 drives the driving bevel gear 81 to rotate. During the rotation, the driving bevel gear 81 drives the meshing driven bevel gear 82 to rotate. During the rotation, the driven bevel gear 82 drives the transmission shaft 83 to rotate. During the rotation, the transmission shaft 83 drives the transmission gear 84 to rotate. During the rotation, the transmission gear 84 drives the moving rack 85 to move, thereby realizing the process of driving the secondary limit cylinder 71 to move during the movement of the lifting block 1.

[0058] A locking component 9 is also provided between the secondary limiting cylinder 71 and the limiting sleeve 7. The locking component 9 can limit the relative position between the limiting sleeve 7 and the secondary limiting cylinder 71.

[0059] By providing the snap-fit ​​component 9, the position of the secondary limit cylinder 71 can be restricted by the snap-fit ​​component 9 when it moves to the appropriate position with the lifting block 1, thereby making the position of the secondary limit cylinder 71 more stable.

[0060] The snap-fit ​​assembly 9 includes multiple snap-fit ​​ratchet blocks 91 fixedly connected to each side wall of the secondary limiting cylinder 71. The multiple snap-fit ​​ratchet blocks 91 on the side wall of each secondary limiting cylinder 71 are evenly arranged in the vertical direction. Each side wall of the groove opened in the inner wall of the limiting sleeve 7 is provided with multiple receiving ratchet blocks 92 evenly arranged in the vertical direction. The four rows of snap-fit ​​ratchet blocks 91 are arranged one-to-one with the four rows of receiving ratchet blocks 92, and multiple snap-fit ​​ratchet blocks 91 in each row can snap with the corresponding multiple receiving ratchet blocks 92.

[0061] By engaging the ratchet block 91 and receiving the ratchet block 92, the relative position between the limiting sleeve 7 and the secondary limiting cylinder 71 can be restricted, thereby making the position of the secondary limiting cylinder 71 more stable.

[0062] The implementation principle of a reinforcement device for building beams in this application embodiment is as follows: when it is necessary to support the beam, the lifting hydraulic cylinder 4 is activated, the lifting hydraulic cylinder 4 drives the abutment block 12 to abut against the lower side of the beam, and then the drive assembly 3 drives the clamping plate to clamp the two sides of the beam.

[0063] At the same time, the abutment block 12 drives the lifting screw 61 to move downward. During the downward movement, the lifting screw 61 drives the four support screws 63 to move downward, so that each support screw 63 abuts against the upper surface of the support block 5.

[0064] During the movement of each support screw 63, the connected transmission gear 84 is driven to rotate. During the rotation of the four transmission gears 84, the four moving racks 85 and the secondary limiting cylinder 71 are driven to move, so that the secondary limiting cylinder 71 can move with the lifting block 1. The position of the secondary limiting cylinder 71 is restricted by the snap-fit ​​component 9, so as to restrict the relative position between the lifting block 1 and the support block 5 through the secondary limiting cylinder 71 and the limiting sleeve 7.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reinforcement device for building beams, characterized in that: The device includes a lifting block (1), the top wall of which can abut against the roof beam. The top of the lifting block (1) is fixedly connected to two opposing baffles (11), which are spaced apart. Each of the opposing sides of the two baffles (11) is provided with a clamping plate (2) that can clamp the roof beam. The lifting block (1) is also connected to a drive assembly (3) that can drive the two clamping plates (2) to move relative to each other to clamp the roof beam. The bottom wall of the lifting block (1) is provided with a lifting hydraulic cylinder (4) that can drive the lifting block (1) to move. The lifting hydraulic cylinder (4) can be connected to the drive assembly (3) and can drive the two clamping plates (2) to clamp the roof beam through the drive assembly (3). The drive assembly (3) includes a drive screw (31) connected to the opposite side of the two clamping plates (2). Each drive screw (31) is rotatably sleeved with a drive gear (32) on the side of the adjacent baffle (11) away from the other baffle (11). Each drive gear (32) is meshed with a gear (33) on its lower side. Each gear (33) is meshed with a drive rack (34) on one side. The top wall of the lifting block (1) is slidably inserted with an abutment block (12) in the vertical direction. Each drive rack (34) is connected to the abutment block (12) and can move in the vertical direction under the drive of the abutment block (12). The lifting block (1) is provided with a support block (5) on its lower side. The lifting hydraulic cylinder (4) is embedded in the support block (5) from top to bottom and the piston rod extends upward to connect with the lifting block (1). A support component (6) is also provided between the lifting block (1) and the support block (5) to further support the lifting block (1). The support assembly (6) includes a lifting screw (61) fixedly connected to the lower end of the abutment block (12). The lifting screw (61) is threaded with a drive gear (62) at one end away from the abutment block (12). The drive gear (62) meshes with a plurality of support gears (64). Each support gear (64) is penetrated in the middle and threaded with a support screw (63). Each support screw (63) can penetrate the bottom wall of the lifting block (1) and abut against the upper surface of the support block (5) under the drive of the support gear (64). The support block (5) and the lifting block (1) are fitted with a limiting sleeve (7) that can simultaneously abut against the side walls of the lifting block (1) and the support block (5). The upper end of the limiting sleeve (7) is provided with a groove around the inner wall of the limiting sleeve (7), and a secondary limiting cylinder (71) that can abut against the side wall of the support block (5) is slidably connected inside the groove. The secondary limiting cylinder (71) is connected to a transmission component (8). The transmission component (8) is connected to the lifting block (1) and can drive the secondary limiting cylinder (71) to move synchronously while the lifting block (1) moves. The transmission assembly (8) includes a drive bevel gear (81) threaded onto the outside of each support screw (63), a driven bevel gear (82) meshing on one side of each drive bevel gear (81), a transmission gear (84) coaxially drivingly connected on one side of each driven bevel gear (82), and each transmission gear (84) being able to pass through the side wall of the adjacent lifting block (1) on the side near the adjacent lifting block (1). The secondary limiting cylinder (71) is fixedly connected to a movable rack (85) meshing with the transmission gear (84) on the side near each transmission gear (84).

2. The reinforcement device for building beams according to claim 1, characterized in that: The abutment block (12) is arranged such that the side of each clamping plate (2) is inclined from bottom to top toward the middle of the two clamping plates (2).

3. The reinforcement device for building beams according to claim 1, characterized in that: A snap-fit ​​assembly (9) is also connected between the limiting sleeve (7) and the secondary limiting sleeve (71) to limit the relative position between the limiting sleeve (7) and the secondary limiting sleeve (71).

4. The reinforcement device for building beams according to claim 3, characterized in that: The snap-fit ​​assembly (9) includes a plurality of snap-fit ​​ratchet blocks (91) arranged vertically on the side of the secondary limiting cylinder (71) near the limiting sleeve (7). A plurality of receiving ratchet blocks (92) that can snap with the plurality of snap-fit ​​ratchet blocks (91) are fixedly connected to the inner wall of the limiting sleeve (7) near the secondary limiting cylinder (71).

5. The reinforcement device for building beams according to claim 1, characterized in that: Each of the two clamping plates (2) has a clamping pad (21) fixedly connected to its opposite side, one side of which can abut against the roof beam.

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