Extensible and adjustable building beam reinforcing structure

Abstract

The building beam reinforcing structure comprises a supporting seat, a telescopic table, a telescopic rod, a central supporting plate, a pressure-bearing extension mechanism and a regulating mechanism, a supporting frame is coaxially and fixedly connected to the upper surface of the supporting seat, and sliding grooves penetrating through the inner side and the outer side of the supporting frame are formed in the left side and the right side of the supporting frame correspondingly; two sliding grooves are formed in the upper end of the supporting frame, a sliding block is slidably connected into each sliding groove, the two sliding blocks are fixedly connected to the left side and the right side of a telescopic table correspondingly, the lower end of the telescopic table movably stretches into the inner side of the upper end of the supporting frame, an air cylinder assembly is installed at the inner bottom end of the supporting frame, and the telescopic end of the air cylinder assembly is coaxially and fixedly connected to the lower end of the telescopic table. According to the self-adaptive supporting device, the supporting structure is extended, the supporting and reinforcing range can be widened, in addition, the supporting range can be adjusted in a self-adaptive mode through downward pressing of the beam, meanwhile, the supporting range can be adjusted in advance in a manual mode, and therefore the self-adaptive adjusting supporting range can be conveniently changed.

Description

Technical Field

[0001] The invention relates to the technical field of building beam reinforcement, and in particular to an extendable and controllable building beam reinforcement structure. Background Art

[0002] In the process of building construction, in order to avoid the impact of construction on the beams, the beams are often reinforced. The traditional way is to support the beams with wooden piles of appropriate length. With the development of machinery, people began to use equipment composed of cylinder assemblies and rigid components. The cylinder assemblies are used to expand and contract the rigid components to support the beams. This method is more convenient and stable than the traditional method. The existing building beam reinforcement structure still has the following technical problems when in use, such as: 1. When the existing building beam reinforcement structure is used, it can only reinforce the support position, which is not convenient for extending the support, which limits the scope of support reinforcement and cannot improve the stability of reinforcement; 2. The existing building beam reinforcement structure is not convenient for adaptively adjusting the extension range when in use, that is, it is not possible to adaptively adjust the extension range as the beam is pressed downward, so it is not convenient to increase the support stability as the beam moves downward relatively; Therefore, a stretchable and adjustable building beam reinforcement structure is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide an expandable and adjustable building beam reinforcement structure to solve the problem in the above background technology that the existing building beam reinforcement structure cannot extend the support range and is not convenient for adaptively adjusting the extension range.

[0004] To achieve the above object, the present invention provides the following technical solutions: A building beam reinforcement structure that can be extended and regulated includes a support seat, a telescopic platform, a telescopic rod, a central support plate, a pressure-bearing extension mechanism and an regulating mechanism, wherein the upper surface of the support seat is coaxially fixedly connected with a support frame, and the left and right sides of the support frame are provided with slide grooves that penetrate the inner and outer sides thereof, and each slide 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, and the lower end of the telescopic platform is movably extended to the inner side of the upper end of the support frame, and a cylinder assembly is installed at the inner bottom end of the support frame, and the telescopic end of the cylinder assembly is coaxially fixedly connected to the inner and outer sides thereof. The telescopic rod is fixedly connected to the lower end of the telescopic platform, the telescopic rod is a rod-tube movable nesting 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 telescopic rod upper rod is fixedly connected to the lower surface of the central support plate, and a spring nested on the outside of the telescopic rod is provided between the lower surface of the central support plate and the upper surface of the telescopic platform, the telescopic rod is provided with 4, and they are respectively arranged at the four corners of the upper end of the telescopic platform, the telescopic platform is connected to the lateral support plate through a pressure-bearing extension mechanism, and the telescopic platform is connected to the pressure-bearing extension mechanism through a regulating mechanism.

[0005] Furthermore, the pressure-bearing extension mechanism includes a support arm, a bidirectional screw rod, a twisted rod, a pressure platform, a threaded sleeve, a top support plate, a supporting inclined plate, a connecting inclined plate, a through groove, a limit rod, a support block, a cross groove, a sleeve, an elastic triangular protrusion, a limiting filling block, a limit ring and a spring. The lower end bearing of the bidirectional screw rod is connected to the inner bottom end of the telescopic platform, and the outer side of the bidirectional screw rod is provided with two sections of threads symmetrical about the vertical line therein. The lower end of the twisted rod is threadedly connected to the inner side of the upper end of the bidirectional screw rod, and the lower end of the pressure platform is coaxially connected to the twisted rod The upper end of the pressure platform is set through the upper end of the telescopic platform, the pressure platform is set below the central support plate, and the two are not in contact in a natural state, the threaded sleeves are provided with 2, and the 2 threaded sleeves are respectively connected with the two sections of threads on the bidirectional screw rod, the top support plate is provided with 4, the support inclined plates are provided with 2, the two ends of the top support plate are respectively axially connected to the support inclined plate and the threaded sleeve, and the top support plates on the same side of the threaded sleeve form an eight-shaped structure, the inclined surface of the connecting inclined plate is connected in sliding contact with the inclined surface of the supporting inclined plate, and the telescopic The left and right sides of the platform are provided with through grooves that penetrate the inner and outer sides thereof, and the two side walls of each through groove are connected to the two sides of the connecting inclined plate through a sliding structure, so as to facilitate the vertical movement of the connecting inclined plate. The limit rod is vertically fixedly connected in the through groove, and the limit rod is arranged in parallel with the bidirectional screw rod. The elastic triangular protrusions are equidistantly and symmetrically distributed on the limit rod, and the elastic triangular protrusions are right-angled triangular prisms, and their right-angled sides are fixedly connected to the limit rod. The support block is provided with a cross groove that penetrates the upper and lower sides and the left and right sides thereof, and the limit rod is arranged through A cross slot passes through the support block, each of the limit rods passes through three support blocks, and the three support blocks on the same limit rod are fixedly connected to the corresponding support inclined plates, the limit filling block is slidably connected to the left and right ends of the cross slot, and a limit ring is provided on the limit filling block, the outer bearings at the left and right ends of the cross slot are connected to bushings, and the outer ends of the two bushings are fixedly connected to the inner side of the lower end of the support arm, and the upper end shaft of the support arm is connected to the lower end of the lateral support plate, and the spring 2 is provided between the inner end of the bushing and the corresponding limit ring.

[0006] By adopting the above technical scheme, when the beam is pressed down, the central support plate presses down the pressure platform, so that the pressure platform drives the twisted rod to move downward synchronously, and then the twisted rod moves toward the inside of the upper end of the two-way screw rod, so that the two-way screw rod rotates. When the two-way screw rod rotates, the two threaded sleeves can be brought close to each other, so that the top support plate drives the two supporting inclined plates away from each other, and then squeezes the connecting inclined plate. Under the squeezing, the connecting inclined plate moves upward, so that the support block moves on the limit rod connected to it. After the support block moves, the support arm will move upward, thereby driving the lateral support plate to move up. Since the lateral support plate is supported on the lower surface of the 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 beam.

[0007] Furthermore, the inner side of the upper end of the bidirectional screw and the outer side of the twisted rod are provided with mutually matching twisted threads, and the bidirectional screw and the twisted rod are coaxially arranged.

[0008] By adopting the above technical solution, the twisted rod can drive the bidirectional screw rod to rotate when it moves on the upper end of the bidirectional screw rod.

[0009] Furthermore, the upper surface of the pressure platform is a rough plane, and the pressure platform, the central support plate and the twisted rod are coaxially arranged.

[0010] By adopting the above technical solution, after the room beam is supported on the center support plate, the center support plate can be moved downward. In the process of the center support plate moving downward, the pressure platform is driven to move downward. The rough surface can be used to prevent the pressure platform from rotating, and the center support plate can rotate when the room beam is not supported on the center support plate.

[0011] Furthermore, the sliding structure includes a movable block and a movable groove, and the movable block is slidably connected to the movable groove, and 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.

[0012] By adopting the above technical solution, the connecting inclined plate can only move in the vertical direction under the pressure of the supporting inclined plate, thereby facilitating the support block to move in the vertical direction.

[0013] Furthermore, the upper end of the cross groove is funnel-shaped, and its left and right ends are composed of two sections, the inner end of which is an octagonal star structure, and the outer end of which is a circular structure, and the limiting ring is arranged in the circular ring structure.

[0014] By adopting the above technical solution, when the support block moves on the limiting rod, the elastic triangular protrusion can gradually enter the upper end of the cross groove, thereby facilitating the compression of the limiting filling block.

[0015] Furthermore, the inner side of the shaft sleeve is an octagonal star structure that matches the limiting filling block.

[0016] By adopting the above technical solution, the rotation of the shaft sleeve can be limited by limiting the filling block to partially extend into the shaft sleeve, thereby fixing the position of the lateral support plate and avoiding the height change of the lateral support plate.

[0017] Furthermore, the regulating mechanism includes an adjusting shaft, a worm sleeve and a worm gear sleeve, the inner end bearing of the adjusting shaft passes through the interior of the telescopic table, and the inner end bearing of the adjusting shaft is connected to the inner side of the telescopic table, the worm sleeve is coaxially keyed to the outer side of the middle part of the adjusting shaft, and the worm sleeve is connected to the worm gear sleeve, and the worm gear sleeve is coaxially keyed to the outer side of the upper end of the bidirectional screw.

[0018] By adopting the above technical solution, the worm sleeve can be driven to rotate by rotating the adjustment shaft, and then the bidirectional screw can be driven to rotate by the worm gear sleeve, so that the position of the lateral support plate can be adjusted before the beam is pressed down, thereby manually adjusting the range of the extended support.

[0019] Furthermore, the three support blocks on each of the limit rods are equidistantly distributed, and the three arms connected to the three support blocks on the same limit rod are parallel to each other.

[0020] By adopting the above technical solution, the three support plates on the same side can be evenly moved away from or close to each other, thereby improving the stability of the support.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the extendable and adjustable building beam reinforcement structure has an extendable support structure, which can increase the range of support reinforcement, and can also adaptively adjust the support range by pressing down the beam, and can also manually pre-adjust the support range, so as to facilitate changing the adaptive adjustment support range: 1. The central support plate is supported on the beam, so that the beam moves downward relative to the central support plate, and then the pressure platform is squeezed and moved downward, so that the twist rod moves downward synchronously with it, driving the two-way screw rod to rotate. Through the rotation of the two-way screw rod, the two threaded sleeves are close to each other, driving the two supporting inclined plates to move away from each other, so that the supporting inclined plates squeeze the connecting inclined plates in contact with them, so that the connecting inclined plates move in the vertical direction, and drive the connected supporting blocks to move, so that the lateral supporting plates move upward under the action of the supporting blocks, and move downward under the downward pressure of the beam, so the lateral supporting plates will rotate at the upper end of the support arm, so that the lateral supporting plates are 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 so that the limiting filling block partially extends into the inner side of the shaft sleeve, the position of the lateral supporting plate will also be fixed. Thereafter, if the beam continues to apply pressure to the reinforcement structure, the lateral supporting plate will have a tendency to move upward, thereby facilitating the guarantee that the reinforcement structure can stably support the beam; 2. There is a natural distance between the pressure platform and the center support plate, so that when the adjusting shaft is rotated, the worm sleeve drives the worm gear sleeve to rotate, and then the bidirectional screw is rotated, the twist rod and the pressure platform can rotate synchronously. In this process, when the bidirectional screw rotates, the two threaded sleeves approach each other, causing the support block to move downward, so that when the lateral support plates are further away from each other, the limiting filling block will be connected to the shaft sleeve, thereby changing the support range. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of point A; Figure 4 It is a schematic diagram of the connection structure between the lateral support plate and the limit rod of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the local explosion structure; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of point B in the middle; Figure 7 This is a schematic diagram of the cross-sectional structure of the support block of the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point C in the middle.

[0023] In the figure: 1. support seat; 2. support frame; 3. telescopic table; 4. telescopic rod; 5. central support plate; 6. spring one; 7. adjustment shaft; 8. slide groove; 9. slider; 10. support arm; 11. lateral support plate; 12. cylinder assembly; 13. worm sleeve; 14. worm gear sleeve; 15. bidirectional screw; 16. twist rod; 17. pressure platform; 18. threaded sleeve; 19. top support plate; 20. supporting inclined plate; 21. connecting inclined plate; 22. through groove; 23. limit rod; 24. support block; 25. cross groove; 26. shaft sleeve; 27. elastic triangular protrusion; 28. limiting filling block; 29. ​​limiting ring; 30. spring two. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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. See also Figure 1-8 , the present invention provides a technical solution: Embodiment 1: In order to solve the problem that the previous beam reinforcement structure cannot adaptively extend the support range, which is not conducive to improving the support stability, the following technical solution is now provided. Specifically, A building beam reinforcement structure that can be extended and regulated includes a support seat 1, a telescopic platform 3, a telescopic rod 4, a central support plate 5, a pressure-bearing extension mechanism and an regulating mechanism. The upper surface of the support seat 1 is coaxially fixedly connected with a support frame 2, and the left and right sides of the support frame 2 are provided with slide grooves 8 that pass through the inner and outer sides thereof, and each slide groove 8 is slidably connected with a slider 9, and 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 is movably extended to 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. The telescopic end of the cylinder assembly 12 is coaxially fixedly connected to the lower end of the telescopic platform 3, 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, the upper end of the upper rod of the telescopic rod 4 is fixedly connected to the lower surface of the central support plate 5, and a spring 6 nested on the outer side of the telescopic rod 4 is provided between the lower surface of the central support plate 5 and the upper surface of the telescopic platform 3, and the telescopic rod 4 is provided with 4, and they are respectively arranged at the four corners of the upper end of the telescopic platform 3, and the telescopic platform 3 is connected to the lateral support plate 11 through a pressure-bearing extension 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 supporting inclined plate 20, a connecting inclined plate 21, a through groove 22, a limit rod 23, a support block 24, a cross groove 25, a sleeve 26, an elastic triangular protrusion 27, a limiting filling block 28, a limit 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 is arranged through the upper end of the telescopic platform 3, and the pressure platform 17 is arranged on the central support plate 5. , and the two are not in contact in a natural state. Two threaded sleeves 18 are provided, and the two threaded sleeves 18 are respectively connected to the two sections of threads on the bidirectional screw rod 15. Four support top plates 19 are provided, and two support inclined plates 20 are provided. The two ends of the support top plate 19 are respectively axially connected to the support inclined plate 20 and the threaded sleeve 18, and the support top 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 that penetrate 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 move in the vertical direction. The limit rod 23 is vertically fixedly connected in the through groove 22, and The limit rod 23 is arranged parallel to the bidirectional screw rod 15, and the elastic triangular protrusions 27 are equidistantly and 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 and left and right sides thereof, and the limit rod 23 passes through the support block 24 through the cross groove 25. Each limit rod 23 passes through three support blocks 24, and the three support blocks 24 on the same limit rod 23 are fixedly connected to the corresponding support inclined plate 20, and the limiting filling block 28 is slidably connected to the left and right ends of the cross groove 25, and a limiting ring 29 is provided on the limiting filling block 28, and the outer side bearings of the left and right ends of the cross groove 25 are connected to the shaft sleeves 26, and the outer ends of the two shaft sleeves 26 It is fixedly connected to the inner side of the lower end of the support arm 10, and the upper end axis of the support arm 10 is connected to the lower end of the lateral support plate 11. The spring 2 30 is arranged between the inner end of the sleeve 26 and the corresponding limit ring 29. The inner side of the upper end of the bidirectional screw 15 and the outer side of the twisted rod 16 are provided with mutually matching twisted threads, and the bidirectional screw 15 and the twisted rod 16 are coaxially arranged. 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. 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 of the connecting inclined plate 21 and the side wall of the through groove 22. The upper end of the cross 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 in the circular ring structure, the inner side of the sleeve 26 is an octagonal star structure that matches the limiting filling block 28, the three supporting blocks 24 on each limiting rod 23 are equidistantly distributed, and the three supporting arms 10 connected to the three supporting blocks 24 on the same limiting rod 23 are parallel to each other; When in use, the telescopic platform 3 is driven upward by the cylinder assembly 12, so that the central support plate 5 contacts with the beam and the two move relative to each other. During the relative movement of the two, the beam presses down the central support plate 5 relatively, so that the central support plate 5 contacts with the pressure platform 17 and squeezes the pressure platform 17, so that the pressure platform 17 and the twisted rod 16 move downward synchronously. During the downward movement of the twisted rod 16, the bidirectional screw rod 15 is driven to rotate. When the bidirectional screw rod 15 rotates, the two threaded sleeves 18 thereon approach each other, so that the two supporting inclined plates 20 move away from each other. During the process of the supporting inclined plates 20 moving away from each other, the connecting inclined plate 21 is squeezed to move the connecting inclined plate 21 upward, driving the supporting block 24 connected thereto to move synchronously. The lateral support plates 11 are moved upwards, and at the same time, the connected support arms 10 and lateral support plates 11 are synchronously moved upwards. Since the room beam applies a downward force to the lateral support plates 11, the lateral support plates 11 can only rotate on the support arms 10, so that the lateral support plates 11 are moved away from each other. During this process, the limit rod 23 and the elastic triangular protrusion 27 connected thereto gradually approach the limiting filling block 28, so that the limiting filling block 28 is squeezed. When the inner side of the shaft sleeve 26 matches the limiting filling block 28, the elasticity of the elastic triangular protrusion 27 causes the limiting filling block 28 to extend into the shaft sleeve 26. At this time, the shaft sleeve 26 will be restricted from rotating. At this time, the position of the lateral support plates 11 is also restricted, so that the lateral support plates 11 and the center support plate 5 jointly support the room beam.

[0025] Embodiment 2: To solve the problem that the previous beam processing structure cannot adjust the support range, specifically, The telescopic platform 3 is connected to the pressure-bearing extension mechanism through a regulating mechanism, which includes 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. The worm gear sleeve 14 is coaxially keyed to the outer side of the upper end of the bidirectional screw 15. When in use, during the process of the center support plate 5 and the beam moving relative to each other, and before the center support plate 5 contacts the pressure platform 17, the adjusting shaft 7 can be rotated to make the worm sleeve 13 drive the worm gear sleeve 14 to rotate, thereby driving the bidirectional screw 15 to rotate, so that the two threaded sleeves 18 move away from each other, and then the connecting inclined plate 21 is driven to move downward, so that the lateral support plates 11 can move away from each other to a greater distance, and then the limiting filling block 28 is extended into the shaft sleeve 26 to fix the position of the lateral support plate 11, so that the support range can be adjusted.

[0026] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] 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. An extendable 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 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 support inclined plates (20), 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 bearings at 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 ring 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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