A ductile and adjustable building beam reinforcement structure

Abstract

The present invention discloses a building beam reinforcement structure with extendable regulation, which includes a support base, a telescopic platform, a telescopic rod, a central support plate, a pressure-bearing extension mechanism and a regulation mechanism. The upper surface of the support base is coaxially fixedly connected with a support frame, and sliding grooves penetrating through the inner and outer sides are arranged on both the left and right sides of the support frame. Each sliding groove is slidably connected with a slider, and the two sliders are respectively fixedly connected to the left and right sides of the telescopic platform. The lower end of the telescopic platform extends into the upper end inner side of the support frame movably. An air cylinder assembly is installed at the inner bottom end of the support frame, and the telescopic end of the air cylinder assembly is coaxially fixedly connected to the lower end of the telescopic platform. This invention has an extended support structure, which can improve the scope of support and reinforcement. In addition, the support scope can be adaptively adjusted by the downward pressure of the beam, and at the same time, the support scope can also be pre-adjusted manually, so as to facilitate changing the scope of adaptive adjustment of support.

Description

Technical Field

[0001] The present invention relates to the technical field of building beam reinforcement, and specifically provides a building beam reinforcement structure that can be extended and regulated. Background Art

[0002] During the building construction process, in order to avoid the impact of construction on the beams, the beams are often reinforced. The traditional method is to support the beams with wooden stakes of appropriate length. With the development of machinery, people began to use equipment composed of cylinder components and rigid members. The cylinder components are used to make the rigid members stretch and contract, so as to jack up the beams. This method is more convenient and stable compared with the traditional method.

[0003] When the existing building beam reinforcement structure is in use, there are still the following technical problems, such as:

[0004] 1. When the existing building beam reinforcement structure is in use, it can only reinforce the support position and is not convenient for extended support, which limits the scope of support reinforcement and cannot improve the stability of reinforcement.

[0005] 2. When the existing building beam reinforcement structure is in use, it is not convenient to adaptively adjust the extended range, that is, it cannot adaptively adjust the extended range as the beam is pressed down, so it is not convenient to increase the support stability as the beam moves downward relatively.

[0006] Therefore, a building beam reinforcement structure that can be extended and regulated is needed to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a building beam reinforcement structure that can be extended and regulated, so as to solve the problems in the above background art that the existing building beam reinforcement structure cannot extend the support range and is not convenient to adaptively adjust the extended range.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A ductile and adjustable building beam reinforcement structure, comprising a support base, a telescopic platform, telescopic rods, a central support plate, a pressure-bearing extension mechanism and a control mechanism. The upper surface of the support base is coaxially and fixedly connected with a support frame, and sliding grooves penetrating through its inner and outer sides are arranged on both the left and right sides of the support frame. Each sliding groove is slidably connected with a slider. The two sliders are respectively fixedly connected to the left and right sides of the telescopic platform, and the lower end of the telescopic platform extends into the inner side of the upper end of the support frame movably. An air cylinder assembly is installed at the inner bottom end of the support frame, and the telescopic end of the air cylinder assembly is coaxially and fixedly connected to the lower end of the telescopic platform. The telescopic rod is a rod-and-tube movable nested structure, and the lower end of the tube on the telescopic rod is fixedly connected to the upper end of the telescopic platform. The upper end of the upper rod of the telescopic rod is fixedly connected to the lower surface of the central support plate, and a first spring nested outside the telescopic rod is arranged between the lower surface of the central support plate and the upper surface of the telescopic platform. There are 4 telescopic rods, and they are respectively arranged at the four corners of the upper end of the telescopic platform. The telescopic platform is connected to the side support plate through the pressure-bearing extension mechanism, and the telescopic platform is connected to the pressure-bearing extension mechanism through the control mechanism.

[0010] Further, the pressure-bearing extension mechanism includes a support arm, a bidirectional lead screw, a twist rod, a pressure-bearing platform, a threaded sleeve, a support top plate, a support inclined plate, a connecting inclined plate, a through groove, a limiting rod, a support block, a cross through groove, a bushing, an elastic triangular protrusion, a limiting filling block, a limiting ring and a second spring. The lower end of the bidirectional lead screw is connected to the inner bottom end of the telescopic platform by a bearing, and two sections of threads symmetrical about its vertical bisector are arranged on the outer side of the bidirectional lead screw. The lower end of the twist rod is threadedly connected to the inner side of the upper end of the bidirectional lead screw. The lower end of the pressure-bearing platform is coaxially connected to the upper end of the twist rod, and the upper end of the pressure-bearing platform penetrates through the upper end of the telescopic platform. The pressure-bearing platform is arranged below the central support plate, and they do not contact in the natural state. There are 2 threaded sleeves, and the 2 threaded sleeves are respectively connected to the two sections of threads on the bidirectional lead screw. There are 4 support top plates and 2 support inclined plates. The two ends of the support top plate are respectively connected to the support inclined plate and the threaded sleeve by shafts, and the support top plates on the same side of the threaded sleeve form a V-shaped structure. The inclined surface of the connecting inclined plate is in sliding contact connection with the inclined surface of the support inclined plate. Through grooves penetrating the inner and outer sides are arranged on both the left and right sides of the telescopic platform, and both side walls of each through groove are connected to both sides of the connecting inclined plate by a sliding structure, facilitating the vertical movement of the connecting inclined plate. The limiting rod is vertically and fixedly connected to the through groove, and the limiting rod is arranged parallel to the bidirectional lead screw. The elastic triangular protrusions are symmetrically distributed at equal intervals on the limiting rod, and the elastic triangular protrusions are right-angled triangular prisms, and their right-angled sides are fixedly connected to the limiting rod. The support block is provided with a cross through groove penetrating its upper, lower, left and right side surfaces, and the limiting rod passes through the support block through the cross through groove. Each limiting rod passes through 3 support blocks, and the 3 support blocks on the same limiting rod are all fixedly connected to the corresponding connecting inclined plate. The limiting filling block is slidably connected to the left and right ends of the cross through groove, and a limiting ring is arranged on the limiting filling block. Bushings are connected to the outer sides of the left and right ends of the cross through groove by bearings, and the outer ends of the 2 bushings are fixedly connected to the inner side of the lower end of the support arm. The upper end of the support arm is connected to the lower end of the lateral support plate by a shaft. The second spring is arranged between the inner end of the bushing and the corresponding limiting ring.

[0011] With the above technical solution, when the roof beam is pressed down, the central support plate presses down the pressure-bearing platform, causing the pressure-bearing platform to drive the twist rod to move downward synchronously. Further, the twist rod moves into the inner part of the upper end of the bidirectional lead screw, thereby causing the bidirectional lead screw to rotate. When the bidirectional lead screw rotates, the two threaded sleeves can move closer to each other, so that the support top plates drive the two support inclined plates to move away from each other, and then squeeze the connecting inclined plate. Under the extrusion, the connecting inclined plate moves upward, so that the support block moves on the limiting rod to which it is connected. After the support block moves, the support arm will move upward, thereby driving the lateral support plate to move upward. Since the lateral support plate supports the lower surface of the roof beam, the support plate will rotate on the support arm, and the support plates will move away from each other, thereby adaptively adjusting the support range and improving the stability of the supported roof beam.

[0012] Furthermore, mutually matching twist threads are provided on the inner side of the upper end of the bidirectional lead screw and the outer side of the twist rod, and the bidirectional lead screw and the twist rod are coaxially arranged.

[0013] Adopting the above technical solution, it is convenient for the twist rod to drive the bidirectional lead screw to rotate when moving at the upper end of the bidirectional lead screw.

[0014] Furthermore, the upper surface of the pressure-bearing platform is a rough plane, and the pressure-bearing platform, the central support plate and the twist rod are coaxially arranged.

[0015] Adopting the above technical solution, after the roof beam is supported on the central support plate, the central support plate moves downward. During the downward movement of the central support plate, the pressure-bearing platform is driven to move downward. Through the rough plane, the rotation of the pressure-bearing platform is avoided, and when the roof beam is not supported on the central support plate, the central support plate can rotate.

[0016] Furthermore, the sliding structure includes a movable block and a movable groove, and the movable block is slidably connected to the movable groove. The movable block and the movable groove are respectively arranged on the side surface of the connecting inclined plate and the side wall of the through groove.

[0017] Adopting the above technical solution, when the connecting inclined plate is extruded by the supporting inclined plate, it can only move in the vertical direction, so as to facilitate driving the supporting block to move in the vertical direction.

[0018] Furthermore, the upper end of the cross through groove is funnel-shaped, and its left and right ends are composed of two sections. Its inner end is an octagram structure, and its outer end is a circular structure. The limiting ring is arranged in the circular structure.

[0019] Adopting the above technical solution, when the supporting block moves on the limiting rod, the elastic triangular protrusions can gradually enter the upper end of the cross through groove, so as to facilitate the extrusion of the limiting filling block.

[0020] Furthermore, the inner side of the bushing is an octagram structure that fits the limiting filling block.

[0021] Adopting the above technical solution, it is convenient to limit the rotation of the bushing after the limiting filling block partially extends into the bushing, so as to fix the position of the lateral support plate and prevent the height of the lateral support plate from changing.

[0022] Furthermore, the regulation mechanism includes an adjustment shaft, a worm sleeve and a worm gear sleeve. The inner end bearing of the adjustment shaft penetrates into the interior of the telescopic platform, and the inner end bearing of the adjustment shaft is connected to the inner side of the telescopic platform. The worm sleeve is coaxially key-connected to the outer side of the middle part of the adjustment shaft, and the worm sleeve is connected to the worm gear sleeve. The worm gear sleeve is coaxially key-connected to the outer side of the upper end of the bidirectional lead screw.

[0023] With the above technical solution, the rotation of the adjustment shaft can drive the worm sleeve to rotate, and then drive the bidirectional lead screw to rotate through the worm gear sleeve, so that the position of the lateral support plate can be adjusted before the roof beam is pressed down, thereby manually adjusting the range of the extended support.

[0024] Further, the three support blocks on each limiting rod are equidistantly distributed, and the three support arms connected by the three support blocks on the same limiting rod are parallel to each other.

[0025] With the above technical solution, it is convenient for the three support plates on the same side to move away from or close to each other evenly, improving the stability of the support.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: The extendable and adjustable building roof beam reinforcement structure has an extended support structure, which can increase the range of support and reinforcement. In addition, the support range can be adaptively adjusted by the downward pressure of the roof beam, and the support range can also be adjusted manually in advance, so as to facilitate changing the adaptively adjusted support range:

[0027] 1. The center support plate supports on the roof beam, causing the roof beam to move downward relative to the center support plate, and then the pressure-bearing platform is squeezed and moves downward, causing the twist rod to move downward synchronously with it, driving the bidirectional lead screw to rotate. By the rotation of the bidirectional lead screw, the two thread sleeves move closer to each other, driving the two support inclined plates to move away from each other, causing the support inclined plates to squeeze the connecting inclined plates in contact with them, causing the connecting inclined plates to move in the vertical direction, driving the support blocks connected to them to move, causing the lateral support plates to move upward under the action of the support blocks and move downward under the downward pressure of the roof beam. Therefore, the lateral support plates will rotate at the upper ends of the support arms, causing the lateral support plates to move away from each other, thereby adaptively adjusting the support range and improving the support stability. When the elastic triangular protrusion squeezes the limiting filling block, causing the limiting filling block to partially extend into the inner side of the sleeve, the position of the lateral support plate will also be fixed. Thereafter, if the roof beam continues to apply pressure to the reinforcement structure, it will cause the lateral support plate to have a tendency to move upward, thus facilitating ensuring that the reinforcement structure can stably support the roof beam;

[0028] 2. Due to the distance between the pressure-bearing platform and the center support plate in the natural state, when the adjustment shaft is rotated to drive the worm sleeve to rotate, and then drive the bidirectional lead screw to rotate, the twist rod and the pressure-bearing platform can rotate synchronously. During this process, when the bidirectional lead screw rotates, the two thread sleeves move closer to each other, causing the support blocks to move downward. As a result, when the lateral support plates move away from each other to a greater position, the limiting filling block will be connected to the sleeve, thus being able to change the support range. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the main view structural schematic diagram of the present invention;

[0030] Figure 2Schematic cross-sectional structure diagram of the present invention;

[0031] Figure 3 of the present invention Figure 2 Schematic enlarged structure diagram of point A in it;

[0032] Figure 4 Schematic connection structure diagram of the lateral support plate and the limiting rod of the present invention;

[0033] Figure 5 of the present invention Figure 4 Schematic partial explosion structure diagram in it;

[0034] Figure 6 of the present invention Figure 5 Schematic enlarged structure diagram of point B in it;

[0035] Figure 7 Schematic cross-sectional structure diagram of the support block of the present invention;

[0036] Figure 8 of the present invention Figure 7 Schematic enlarged structure diagram of point C in it.

[0037] In the figure: 1, support base; 2, support frame; 3, telescopic table; 4, telescopic rod; 5, central support plate; 6, first spring; 7, adjustment shaft; 8, chute; 9, slider; 10, support arm; 11, lateral support plate; 12, cylinder assembly; 13, worm sleeve; 14, worm gear sleeve; 15, bidirectional lead screw; 16, twist rod; 17, bearing platform; 18, threaded sleeve; 19, support top plate; 20, support inclined plate; 21, connecting inclined plate; 22, through groove; 23, limiting rod; 24, support block; 25, cross through groove; 26, bushing; 27, elastic triangular protrusion; 28, limiting filling block; 29, limiting ring; 30, second spring. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0039] Please refer to Figure 1-8 , the present invention provides a technical solution:

[0040] Embodiment 1: To solve the problem that the conventional beam reinforcement structure cannot adaptively extend the support range, which is not conducive to improving the support stability, the following technical solution is provided. Specifically,

[0041] A ductile and adjustable building beam reinforcement structure, comprising a support base 1, a telescopic platform 3, a telescopic rod 4, a central support plate 5, a pressure-bearing extension mechanism and a control mechanism. The upper surface of the support base 1 is coaxially and fixedly connected with a support frame 2, and sliding grooves 8 penetrating through the inner and outer sides are arranged on both the left and right sides of the support frame 2. A slider 9 is slidably connected in each sliding groove 8, and the two sliders 9 are respectively fixedly connected to the left and right sides of the telescopic platform 3. The lower end of the telescopic platform 3 extends into the inner side of the upper end of the support frame 2 movably. An air cylinder assembly 12 is installed at the inner bottom end of the support frame 2, and the telescopic end of the air cylinder assembly 12 is coaxially and fixedly connected to the lower end of the telescopic platform 3. The telescopic rod 4 is a rod-tube movable nested structure, and the lower end of the tube on the telescopic rod 4 is fixedly connected to the upper end of the telescopic platform 3. The upper end of the rod on the telescopic rod 4 is fixedly connected to the lower surface of the central support plate 5. A first spring 6 nested outside the telescopic rod 4 is arranged between the lower surface of the central support plate 5 and the upper surface of the telescopic platform 3. There are 4 telescopic rods 4, and they are respectively arranged at the four corners of the upper end of the telescopic platform 3. The telescopic platform 3 is connected to the side support plate 11 through the pressure-bearing extension mechanism;

[0042] The pressure-bearing extension mechanism includes a support arm 10, a bidirectional lead screw 15, a twist rod 16, a pressure-bearing platform 17, a threaded sleeve 18, a support top plate 19, a support inclined plate 20, a connecting inclined plate 21, a through groove 22, a limit rod 23, a support block 24, a cross through groove 25, a bushing 26, an elastic triangular protrusion 27, a limiting filling block 28, a limit ring 29 and a second spring 30. The lower end of the bidirectional lead screw 15 is connected to the inner bottom end of the telescopic platform 3 by a bearing, and two sections of threads symmetrical about its vertical bisector are arranged on the outer side of the bidirectional lead screw 15. The lower end of the twist rod 16 is threadedly connected to the upper inner side of the bidirectional lead screw 15. The lower end of the pressure-bearing platform 17 is coaxially connected to the upper end of the twist rod 16, and the upper end of the pressure-bearing platform 17 penetrates through the upper end of the telescopic platform 3. The pressure-bearing platform 17 is arranged below the central support plate 5, and they do not contact in the natural state. There are 2 threaded sleeves 18, and the 2 threaded sleeves 18 are respectively connected to the two sections of threads on the bidirectional lead screw 15. There are 4 support top plates 19 and 2 support inclined plates 20. The two ends of the support top plate 19 are respectively connected to the support inclined plate 20 and the threaded sleeve 18 by shafts, and the support top plates 19 on the same side of the threaded sleeve 18 form an octagonal structure. The inclined surface of the connecting inclined plate 21 is in sliding contact connection with the inclined surface of the support inclined plate 20. Through grooves 22 penetrating the inner and outer sides are arranged on the left and right sides of the telescopic platform 3, and both side walls of each through groove 22 are connected to both sides of the connecting inclined plate 21 through a sliding structure, facilitating the vertical movement of the connecting inclined plate 21. The limit rod 23 is vertically and fixedly connected in the through groove 22, and the limit rod 23 is arranged parallel to the bidirectional lead screw 15. The elastic triangular protrusions 27 are symmetrically distributed at equal intervals on the limit rod 23, and the elastic triangular protrusion 27 is a right-angled triangular prism, and its right-angled side is fixedly connected to the limit rod 23. The support block 24 is provided with a cross through groove 25 penetrating its upper, lower, left and right side surfaces, and the limit rod 23 passes through the support block 24 through the cross through groove 25. Each limit rod 23 passes through 3 support blocks 24, and the 3 support blocks 24 on the same limit rod 23 are all fixedly connected to the corresponding connecting inclined plate 21. The limiting filling block 28 is slidably connected to the left and right ends of the cross through groove 25, and a limit ring 29 is arranged on the limiting filling block 28. The outer sides of the left and right ends of the cross through groove 25 are connected to the bushing 26 by bearings, and the outer ends of the 2 bushings 26 are fixedly connected to the inner side of the lower end of the support arm 10, and the upper end of the support arm 10 is connected to the lower end of the lateral support plate 11 by a shaft. The second spring 30 is arranged between the inner end of the bushing 26 and the corresponding limit ring 29. Matching twist threads are arranged on the upper inner side of the bidirectional lead screw 15 and the outer side of the twist rod 16, and the bidirectional lead screw 15 and the twist rod 16 are coaxially arranged. The upper surface of the pressure-bearing platform 17 is a rough plane, and the pressure-bearing platform 17, the central support plate 5 and the twist rod 16 are coaxially arranged. The sliding structure includes a movable block and a movable groove, and the movable block is slidably connected to the movable groove. The movable block and the movable groove are respectively arranged on the side surface of the connecting inclined plate 21 and the side wall of the through groove 22. The upper end of the cross through groove 25 is funnel-shaped, and its left and right ends are composed of two sections, and its inner end is an octagonal star structure.Its outer end is a circular structure. The limiting ring 29 is arranged inside the circular structure. The inner side of the shaft sleeve 26 is an octagonal star structure that fits with the limiting filling block 28. The three support blocks 24 on each limiting rod 23 are equidistantly distributed, and the three support arms 10 connected by the three support blocks 24 on the same limiting rod 23 are parallel to each other;

[0043] During use, the telescopic platform 3 is driven by the cylinder assembly 12 to move upward, so that the central support plate 5 contacts the roof beam and makes the two move relative to each other. During the relative movement of the two, the roof beam presses down the central support plate 5 relatively, so that the central support plate 5 contacts the pressure-bearing platform 17 and squeezes the pressure-bearing platform 17, causing the pressure-bearing platform 17 and the twist rod 16 to move downward synchronously. During the downward movement of the twist rod 16, it will drive the bidirectional lead screw 15 to rotate. When the bidirectional lead screw 15 rotates, the two thread sleeves 18 on it move closer to each other, causing the two support inclined plates 20 to move away from each other. During the process of the support inclined plates 20 moving away from each other, they squeeze the connecting inclined plate 21, causing the connecting inclined plate 21 to move upward, driving the connected support blocks 24 to move upward synchronously, and at the same time driving the connected support arms 10 and the lateral support plates 11 to move upward synchronously. Since the roof beam exerts a downward force on the lateral support plates 11, the lateral support plates 11 can only rotate on the support arms 10, causing the lateral support plates 11 to move away from each other. During this process, the limiting rod 23 and the elastic triangular protrusions 27 connected thereto gradually approach the limiting filling block 28, causing the limiting filling block 28 to be squeezed. When the inner side of the shaft sleeve 26 fits with the limiting filling block 28, due to the elasticity of the elastic triangular protrusions 27, the limiting filling block 28 extends into the shaft sleeve 26. At this time, the shaft sleeve 26 will be restricted from rotating, and at this time the position of the lateral support plate 11 is also restricted, so that the lateral support plate 11 and the central support plate 5 jointly support the roof beam.

[0044] Embodiment Two: To solve the problem that the support range of the conventional roof beam processing structure cannot be adjusted. Specifically,

[0045] The telescopic platform 3 is connected to the pressure-bearing extension mechanism through a regulation mechanism. The regulation mechanism includes an adjustment shaft 7, a worm sleeve 13, and a worm gear sleeve 14. The inner end bearing of the adjustment shaft 7 penetrates into the interior of the telescopic platform 3, and the inner end bearing of the adjustment shaft 7 is connected to the inner side of the telescopic platform 3. The worm sleeve 13 is coaxially key-connected to the outer side of the middle part of the adjustment shaft 7, and the worm sleeve 13 is connected to the worm gear sleeve 14. The worm gear sleeve 14 is coaxially key-connected to the outer side of the upper end of the bidirectional lead screw 15;

[0046] During use, when the central support plate 5 moves relative to the roof beam and before the central support plate 5 contacts the pressure-bearing platform 17, the rotatable adjusting shaft 7 can be rotated to drive the worm sleeve 13 to drive the worm gear sleeve 14 to rotate, and then drive the bidirectional lead screw 15 to rotate, so that the two threaded sleeves 18 move away from each other. Further, the connecting inclined plate 21 is driven to move downward, so that the lateral support plates 11 can move away from each other by a greater distance. Only then is the limiting filling block 28 inserted into the sleeve 26 to fix the position of the lateral support plates 11, thereby adjusting the support range.

[0047] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extendable and adjustable building beam reinforcement structure, comprising a support seat (1), a telescopic platform (3), a telescopic rod (4), a central support plate (5), a pressure-bearing extension mechanism and an adjustment mechanism, characterized in that: The upper surface of the support seat (1) is coaxially fixedly connected to the support frame (2), and the left and right sides of the support frame (2) are both provided with slide grooves (8) penetrating the inner and outer sides thereof, and each slide groove (8) is slidably connected to a slider (9), and the two sliders (9) are respectively fixedly connected to the left and right sides of the telescopic platform (3), and the lower end of the telescopic platform (3) movably extends into the inner side of the upper end of the support frame (2), and a cylinder assembly (12) is installed at the inner bottom end of the support frame (2), and the telescopic end of the cylinder assembly (12) is coaxially fixedly connected to the lower end of the telescopic platform (3), and the telescopic rod (4) is a rod-tube movable nesting structure, and the lower end of the tube on the telescopic rod (4) is fixedly connected to the upper end of the telescopic platform (3), and the upper end of the upper rod of the telescopic rod (4) is fixedly connected to the upper end of the telescopic platform (3). The telescopic platform (3) is connected to the lower surface of the central support plate (5), and a spring (6) is arranged between the lower surface of the central support plate (5) and the upper surface of the telescopic platform (3) and is nested in the outer side of the telescopic rod (4). The telescopic rod (4) is provided with four and is respectively arranged at the four corners of the upper end of the telescopic platform (3). The telescopic platform (3) is connected to the lateral support plate (11) through a pressure-bearing extension mechanism. The telescopic platform (3) is connected to the pressure-bearing extension mechanism through a regulating mechanism. The pressure-bearing extension mechanism includes a support arm (10), a bidirectional screw rod (15), a twisted rod (16), a pressure platform (17), a threaded sleeve (18), a top support plate (19), a support inclined plate (20), a connecting inclined plate (21), a through groove (22), a limit rod (23), and a support block. (24), a cross groove (25), a sleeve (26), an elastic triangular protrusion (27), a limiting filling block (28), a limiting ring (29) and a spring (30), the lower end bearing of the bidirectional screw rod (15) is connected to the inner bottom end of the telescopic platform (3), and the outer side of the bidirectional screw rod (15) is provided with two sections of threads symmetrical about the vertical line therein, the lower end of the twisted rod (16) is threadedly connected to the inner side of the upper end of the bidirectional screw rod (15), the lower end of the pressure platform (17) is coaxially connected to the upper end of the twisted rod (16), and the upper end of the pressure platform (17) passes through the upper end of the telescopic platform (3), the pressure platform (17) is arranged below the central support plate (5), and the two are naturally non-contacting, and the threaded sleeve (18) is arranged There are two threaded sleeves (18), and the two threaded sleeves (18) are respectively connected to the two sections of threads on the bidirectional screw rod (15), the top support plates (19) are provided with four, the support inclined plates (20) are provided with two, the two ends of the top support plates (19) are respectively axially connected to the support inclined plate (20) and the threaded sleeve (18), and the top support plates (19) on the same side of the threaded sleeve (18) form an eight-shaped structure, the inclined surface of the connecting inclined plate (21) is connected to the inclined surface of the supporting inclined plate (20) in sliding contact, the left and right sides of the telescopic platform (3) are provided with through grooves (22) penetrating the inner and outer sides thereof, and the two side walls of each through groove (22) are connected to the two sides of the connecting inclined plate (21) through a sliding structure, so that the connecting inclined plate (21) can be easily moved in the vertical direction.The limit rod (23) is vertically fixedly connected in the through groove (22), and the limit rod (23) is arranged in parallel with the bidirectional screw rod (15). The elastic triangular protrusions (27) are symmetrically distributed on the limit rod (23), and the elastic triangular protrusions (27) are right-angled triangular prisms, and their right-angled sides are fixedly connected to the limit rod (23). The support block (24) is provided with a cross groove (25) that passes through the upper and lower sides and the left and right sides thereof, and the limit rod (23) passes through the support block (24) through the cross groove (25). Each of the limit rods (23) passes through three support blocks (24), and the same limit rod The three support blocks (24) on (23) are all fixedly connected to the corresponding connecting inclined plates (21), the limiting filling block (28) is slidably connected to the left and right ends of the cross slot (25), and a limiting ring (29) is provided on the limiting filling block (28), the outer side bearings of the left and right ends of the cross slot (25) are connected to the shaft sleeves (26), and the outer ends of the two shaft sleeves (26) are fixedly connected to the inner side of the lower end of the support arm (10), and the upper end of the support arm (10) is axially connected to the lower end of the lateral support plate (11), and the spring 2 (30) is provided between the inner end of the shaft sleeve (26) and the corresponding limiting ring (29).

2. The expandable and controllable building beam reinforcement structure according to claim 1, characterized in that: The inner side of the upper end of the bidirectional screw rod (15) and the outer side of the twisted rod (16) are provided with mutually matching twisted threads, and the bidirectional screw rod (15) and the twisted rod (16) are coaxially arranged.

3. The expandable and controllable building beam reinforcement structure according to claim 2, characterized in that: The upper surface of the pressure platform (17) is a rough plane, and the pressure platform (17), the central support plate (5) and the twisted rod (16) are coaxially arranged.

4. The expandable and controllable building beam reinforcement structure according to claim 3, characterized in that: The sliding structure comprises a movable block and a movable groove, and the movable block is slidably connected to the movable groove. The movable block and the movable groove are respectively arranged on the side surface of the connecting inclined plate (21) and the side wall of the through groove (22).

5. The expandable and controllable building beam reinforcement structure according to claim 4, characterized in that: The upper end of the cross groove (25) is funnel-shaped, and its left and right ends are composed of two sections, its inner end is an octagonal star structure, and its outer end is a circular structure, and the limiting ring (29) is arranged in the circular structure.

6. The expandable and controllable building beam reinforcement structure according to claim 5, characterized in that: The inner side of the shaft sleeve (26) is an octagonal star structure that matches the limiting filling block (28).

7. The expandable and controllable building beam reinforcement structure according to claim 6, characterized in that: The regulating mechanism comprises an adjusting shaft (7), a worm sleeve (13) and a worm gear sleeve (14); the inner end bearing of the adjusting shaft (7) penetrates into the interior of the telescopic platform (3), and the inner end bearing of the adjusting shaft (7) is connected to the inner side of the telescopic platform (3); the worm sleeve (13) is coaxially keyed to the outer side of the middle part of the adjusting shaft (7), and the worm sleeve (13) is connected to the worm gear sleeve (14); and the worm gear sleeve (14) is coaxially keyed to the outer side of the upper end of the bidirectional lead screw (15).

8. The expandable and controllable building beam reinforcement structure according to claim 7, characterized in that: The three support blocks (24) on each of the limiting rods (23) are distributed at equal intervals, and the three support arms (10) connected to the three support blocks (24) on the same limiting rod (23) are parallel to each other.

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