A building support device

Abstract

The present application relates to a kind of building support devices, two groups of chain clamping components are respectively clamped and fixed in the bending position both ends of bending member;Pull rope both ends are respectively connected with two groups of chain clamping components, telescopic support rod both ends are respectively connected with two groups of chain clamping components, shorten pull rope or lengthen telescopic support rod length to realize the bending position of correction bending member;Realize the clamping and fixing of chain clamping component in the bending position both ends of bending member of different outer diameter;And set up several pull ropes and telescopic support rods between two groups of chain clamping components, the shortening of pull rope and the lengthening of telescopic support rod can all correct bending member;Telescopic support rod uses one-way lengthening structure, can avoid being taken down at will by outsider in the process that telescopic support rod plays the role of support after bending member correction;Pull rope can be filled with concrete to form rigid structure after bending member correction, so that pull rope can also play the role of support.

Description

Technical Field

[0001] This invention relates to a building support device, belonging to the field of building repair technology. Background Technology

[0002] Building structure refers to the spatial force-bearing system in a building, made of building materials, that serves as a framework to withstand various loads or actions.

[0003] In some old buildings, due to the long passage of time, the columns and beams may be bent and deformed. In order to strengthen the building, it is necessary to correct and support the bent and deformed columns and beams. Summary of the Invention

[0004] The purpose of this invention is to provide a building support device to solve the problems mentioned in the background art.

[0005] The technical solution of the present invention is as follows:

[0006] A building support device, comprising:

[0007] Chain clamping assembly: Two sets of chain clamping assemblies are respectively clamped and fixed at both ends of the bent part of the bent component;

[0008] A pull rope, the two ends of which are respectively connected to two sets of chain clamping assemblies, and the pull rope is located on the outside of the bent part of the bent component;

[0009] A telescopic support rod, the two ends of which are respectively connected to two sets of chain clamping assemblies, and the telescopic support rod is located inside the bent part of the bent component;

[0010] The bending of a bent component can be corrected by shortening the pull rope or lengthening the telescopic support rod.

[0011] Preferably, the chain clamping assembly includes any number of chain links, with adjacent sets of chain links hinged together by an upper chain plate and / or a lower chain plate, and the first and last sets of chain links connected by an adjusting assembly; the upper chain plate and the lower chain plate are respectively provided with an upper through hole and a lower through hole with the same structure; the chain links are provided with a first pin hole at both ends, the upper chain plate is provided with two sets of pins adapted to the first pin holes, and the lower chain plate is provided with a second pin hole at both ends, and the pins pass through the first pin hole and the second pin hole in sequence to be threadedly connected to a one-way nut.

[0012] Preferably, the adjusting assembly includes a fixed base and two sets of movable bases disposed at the upper and lower ends of the fixed base. The two sets of movable bases move on the fixed base, approaching or moving away from each other. A first left- or right-handed screw nut pair transmission structure and two sets of pins are installed on the movable base. The first left- or right-handed screw nut pair transmission structure is used to drive the two sets of pins to approach or move away from each other. The pins are adapted to the first pin holes of the chain links. A groove is formed on the inner side wall of the first pin hole, and a snap-fit ​​assembly is installed on the outer side of the pin. The snap-fit ​​assembly engages with the groove in a one-way snap-fit ​​manner.

[0013] Preferably, the snap-fit ​​assembly includes a movable groove formed in the pin, an inclined block that slides at the horizontal end of the movable groove, and a vertical slider that slides at the vertical end of the movable groove. The inclined block and the vertical slider are connected by a connecting rod. It also includes a first spring. The elastic force of the first spring pushes the inclined end of the inclined block to move towards the outside of the vertical end of the movable groove. The movable seat is provided with snap teeth that extend along the moving direction of the pin. The vertical slider is provided with snap hooks that engage with the snap teeth in a one-way manner. The vertical slider moves within the vertical end of the movable groove to achieve engagement or disengagement of the snap hooks with the snap teeth.

[0014] Preferably, the pull rope includes a cylinder, two sets of plugs, and a steel wire rope. The cylinder is equipped with a second left- or right-handed screw nut pair transmission structure and two sets of guide wheels. The second left- or right-handed screw nut pair transmission structure is used to drive the two sets of guide wheels to move closer or further apart. The ends of the plugs are adapted to the upper through hole / lower through hole. The two ends of the steel wire rope pass through the cylinder and are rotated by the two sets of guide wheels before being installed at the ends of the two sets of plugs respectively.

[0015] Preferably, a folding cover is provided between the end of the plug and the cylinder body, and the input end of the second left-right turn screw nut pair transmission structure is located inside the folding cover; after the bending part of the bent part is corrected, concrete is filled into the folding cover.

[0016] Preferably, the telescopic support rod includes a one-way telescopic rod, and both ends of the one-way telescopic rod are connected to pins via universal hinges, the pins being adapted to the upper through hole / lower through hole.

[0017] Preferably, the one-way telescopic rod includes a piston rod, a piston cylinder, and a piston, wherein the piston slides in a liquid seal within the piston cylinder, and the piston rod extends from the piston to the outside of the piston cylinder;

[0018] The piston cylinder is filled with liquid, and the piston divides the piston cylinder into a first chamber and a second chamber. The piston cylinder is also provided with a first channel connecting the first chamber and the second chamber, and a one-way valve is installed on the first channel.

[0019] Preferably, a first collar and a second collar are rotatably connected inside the piston cylinder, and a second channel connecting the first chamber and the second chamber is also provided inside the piston cylinder. The first channel and the second channel are symmetrically arranged. The first collar is located at the upper end of the first channel and the second channel, and the second collar is located at the lower end of the first channel and the second channel. Two sets of symmetrically arranged upper movable channels are opened on the first collar. The one-way valve includes a first one-way valve and a second one-way valve. The first one-way valve and the second one-way valve are respectively installed in the two sets of upper movable channels and have opposite conveying directions. A lower movable channel is opened inside the second collar.

[0020] Preferably, friction textures are provided on both the upper and lower sides of the piston.

[0021] The present invention has the following beneficial effects:

[0022] The corresponding number of chain links and upper and lower chain plates can be selected according to the outer diameter of the bent part to be corrected, so as to clamp and fix the chain clamping assembly at both ends of the bent part of the bent part with different outer diameters.

[0023] Several pull ropes and telescopic support rods are set between the two sets of chain clamping components. The shortening of the pull ropes and the extension of the telescopic support rods can correct the bent parts.

[0024] The telescopic support rod adopts a one-way extension structure, which can prevent it from being arbitrarily disassembled by outsiders while it is providing support after the bending parts have been corrected.

[0025] After the bending parts are corrected, the ropes can be filled with concrete to form a rigid structure, so that the ropes can also play a supporting role. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the chain clamping assembly structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the mating structure of the chain link, upper chain plate, lower chain plate and one-way nut of the present invention;

[0029] Figure 4 This is a schematic diagram of the adjustment component structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the first state structure of the components on the pin of the present invention.

[0031] Figure 6 This is a schematic diagram of the second state structure of the components on the pin of the present invention.

[0032] Figure 7 This is a schematic diagram of the telescopic support rod structure of the present invention;

[0033] Figure 8 This is a cross-sectional view of the unidirectional telescopic rod of the present invention;

[0034] Figure 9 This is the first set of circumferential sectional views of the present invention;

[0035] Figure 10 This is the second set of circumferential sectional views of the present invention;

[0036] Figure 11 This is a schematic diagram of the rope structure of the present invention.

[0037] The reference numerals in the figure are as follows:

[0038] 100. Bending parts;

[0039] 1. Chain clamping assembly; 11. Chain link; 111. First pin hole; 12. Upper chain plate; 121. Pin; 122. Upper through hole; 13. Lower chain plate; 131. Second pin hole; 132. Lower through hole; 14. One-way nut; 15. Adjustment assembly; 151. Fixed seat; 152. Moving seat; 1521. Clamping tooth; 153. First left-right turning screw nut pair transmission structure; 154. Pin; 1541. Moving groove; 155. Wedge block; 156. First spring; 157. Connecting rod; 158. Vertical slider; 159. Hook; 1510. Second spring;

[0040] 2. Pull rope; 21. Cylinder body; 22. Plug; 23. Second left and right turn screw nut pair transmission structure; 24. Guide wheel; 25. Wire rope; 26. Folding cover;

[0041] 3. Telescopic support rod; 31. One-way telescopic rod; 311. Piston rod; 312. Piston cylinder; 313. Piston; 314. First channel; 315. Second channel; 316. First collar; 3161. First one-way valve; 3162. Second one-way valve; 317. Second collar; 3171. Lower movable channel; 32. Universal hinge; 33. Pin rod. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0043] Example: Figure 1-11 As shown:

[0044] The bent component 100 is a column or beam with a circular structure; such as Figure 1 As shown, the bent part 100 is completely deformed;

[0045] like Figure 2-3As shown, the chain clamping assembly 1 includes chain links 11, an upper chain plate 12, a lower chain plate 13, a one-way nut 14, and an adjusting assembly 15. The chain links 11 have through-holes 111 at both ends. The upper chain plate 12 has protruding pins 121 on both sides of one side, and an upper through-hole 122 in the middle. The lower chain plate 13 has second pin holes 131 at both ends, and a lower through-hole 132 in the middle. The axial distance between the two pins 121 is the same as the distance between the two second pin holes 131. The one-way nut 14 is threadedly connected to the pins 121. The upper through-hole 122 and the lower through-hole 132 have identical structures.

[0046] One-way nut 14 is an existing structure, such as CN109083922B, a type of anti-disassembly one-way nut.

[0047] In use, the pins 121 at both ends of the upper chain plate 12 are passed through the two sets of first pin holes 111 at the two sets of chain links 11 that are close to each other. Then, the pins 121 at both ends continue to pass through the second pin holes 131 at both ends of the lower chain plate 13 and are threaded to the one-way nut 14. This makes the upper chain plate 12 and the lower chain plate 13 located on the upper and lower sides of the two sets of chain links 11.

[0048] The pin 121 cannot be removed after being threaded into the one-way nut 14, and can be welded again afterwards; the pin 121 can rotate relative to the first pin hole 111.

[0049] Then, according to the outer diameter of the bent part 100, a corresponding number of chain links 11 are selected and connected end to end in sequence through components such as the upper chain plate 12 and the lower chain plate 13. At this time, in order to connect the chain links 11 at both ends into a closed loop structure and to adjust its length within a certain range, the adjusting component 15 is used to form a closed loop structure of the chain links 11 at both ends. The adjusting component 15 has a length adjustment function.

[0050] like Figure 3-6 As shown, the adjustment assembly 15 includes a fixed base 151, two sets of movable bases 152, a first left-right turning screw and nut pair transmission structure 153, and a pin 154.

[0051] Two sets of movable seats 152 are arranged in parallel and located at the upper and lower ends of the fixed seat 151. The movable seats 152 slide vertically on the fixed seat 151 and cannot be disengaged. The minimum distance between the two sets of movable seats 152 is the same as the height of the chain link 11.

[0052] Each set of movable seats 152 is provided with a first left-right turning screw and nut pair transmission structure 153. Two sets of pins 154 are provided on the side of each set of movable seats 152 that are close to each other. The first left-right turning screw and nut pair transmission structure 153 in the movable seat 152 drives the two sets of pins 154 to move horizontally and linearly on the movable seat 152. The outer diameter of the pin 154 is the same as the inner diameter of the first pin hole 111, and the length of the pin 154 is less than 1 / 2 the length of the first pin hole 111.

[0053] The movable seat 152 has a row of teeth 1521 symmetrically arranged on the left and right sides, extending along the moving direction of the pin 154. The pin 154 has a moving groove 1541 extending to the side wall from its upper end face. The moving groove 1541 has an L-shaped structure. The vertical slider 158 slides vertically in a straight line relative to the vertical end of the moving groove 1541, and the inclined block 156 slides horizontally in a straight line relative to the horizontal end of the moving groove 1541. The upper end of the connecting rod 157 is hinged to the lower end of the vertical slider 158, and the lower end of the connecting rod 157 is hinged to the left end of the inclined block 156 away from the inclined surface. Next, the two ends of the first spring 156 are connected to the left side of the inclined block 156 and the inner wall of the moving groove 1541, respectively; the top of the vertical slider 158 is slidably connected to a hook 159 along a vertical straight line, and a second spring 1510 is connected between the bottom of the hook 159 and the top of the vertical slider 158. The elastic force of the second spring 1510 pushes the hook 159 to move upward and disengage from the vertical slider 158. The hook 159 is engaged with a corresponding row of teeth 1521 in a one-way engagement; a groove is opened on the inner wall of the first pin hole 111 (not shown in the attached figure);

[0054] like Figure 5 The diagram shown is in the normal state. At this time, the hook 159 is completely placed in the moving slot 1541, so that the hook 159 cannot engage with the corresponding row of teeth 1521. Thus, at this time, the first left-right turning screw nut pair transmission structure 153 can drive the two sets of pins 154 to move horizontally to the left or right on the moving seat 152, avoiding irreversible damage caused by operation by outsiders who are not familiar with the device when it is not in formal use.

[0055] like Figure 6As shown, when the pin 154 needs to be inserted into the first pin hole 111 of the link 11, the movable seat 152 moves vertically relative to the fixed seat 151 to adapt. First, the inclined surface of the wedge block 155 cooperates with the first pin hole 111 to push the wedge block 155 into the horizontal end of the movable groove 1541, and compresses the first spring 156 to generate a reverse elastic force, so that the pin 154 can be smoothly inserted into the first pin hole 111 of the link 11. Until the wedge block 155 moves to the slot position, it is pushed by the reverse elastic force of the first spring 156 to insert the inclined end of the wedge block 155 into the slot. The inclined end of the wedge block 155 cannot disengage from the slot in the reverse direction, so that the pin 154 cannot disengage from the first pin hole 111. At this time, the hook 159 moves to the outside of the vertical end of the movable groove 1541 and engages with the corresponding row of teeth 1521.

[0056] Following the steps above, insert the two sets of pins 154 on the left into the upper and lower ends of the first pin hole 111 of the first link 11, and insert the two sets of pins 154 on the right into the upper and lower ends of the first pin hole 111 of the tail link 11.

[0057] The pin 154 is inserted into the first pin hole 111, which not only realizes the composition as shown in the figure Figure 2 The closed-loop structure shown also means that, due to the engagement of the hook 159 and the tooth 1521, the two sets of pins 154 on the same movable seat 152 can only move closer to each other in one direction and cannot move away from each other.

[0058] like Figure 1 As shown, a set of chain clamping assemblies 1 is installed above the bent part of the bent part 100, and another set of chain clamping assemblies 1 is installed below the bent part of the bent part 100. Then, the screw in the first left and right turn screw nut pair transmission structure 153 is rotated by external control, so as to drive the two sets of pins 154 to move closer to each other, thereby reducing the length of the adjustment assembly 15. This allows the chain clamping assemblies 1 of the reduced closed-loop structure to be tightly fitted, clamped, and fixed to the outside of the bent part 100.

[0059] Furthermore, a conical sharp part can be provided on the inner side of the chain link 11, which can be inserted into the inside of the bending member 100, greatly improving the clamping force between the chain clamping assembly 1 and the bending member 100.

[0060] like Figure 7-10 As shown, the telescopic support rod 3 includes a one-way telescopic rod 31, a universal hinge seat 32, and a pin 33; the outer diameter of the pin 33 is the same as the inner diameter of the upper through hole 122 / lower through hole 132; the pin 33 is installed at the end of the corresponding one-way telescopic rod 31 through the corresponding universal hinge seat 32.

[0061] In use, the pin 33 at the lower end of the one-way telescopic rod 31 is inserted into the upper through hole 122 / lower through hole 132 of the lower chain clamping assembly 1, and the pin 33 at the upper end of the one-way telescopic rod 31 is inserted into the upper through hole 122 / lower through hole 132 of the upper chain clamping assembly 1. At this time, the telescopic support rod 3 is located inside the bent part of the bent part 100, and the one-way extension of the telescopic support rod 3 is controlled to push and correct the bent part of the bent part 100. Since the one-way telescopic rod 31 can only extend in one direction, it cannot be disassembled during the correction process to prevent it from being disassembled by others.

[0062] Furthermore, the one-way telescopic rod 31 includes a piston rod 311, a piston cylinder 312, and a piston 313. The piston 313 slides linearly in a liquid-sealed manner inside the piston cylinder 312. A sealing element is provided on the outside of the piston 313 to improve the sealing between it and the inner wall of the piston cylinder 312. The lower end of the piston rod 311 is fixed to the top of the piston 313, and the upper end of the piston rod 311 extends to the outside of the piston cylinder 312 along the moving direction of the piston 313. A sealing ring is provided in the piston cylinder 312 to improve the sealing between it and the piston rod 311.

[0063] The piston cylinder 312 is filled with hydraulic oil. The piston 313 divides the piston cylinder 312 into two independent chambers, a first chamber and a second chamber. The piston cylinder 312 also has a first channel 314, which is connected to the first chamber and the second chamber at both ends. A one-way valve is installed on the first channel 314. The hydraulic oil in the first chamber is transported to the second chamber in one direction through the first channel 314 via the one-way valve, so that the one-way telescopic rod 31 can only extend in one direction and cannot be shortened.

[0064] Furthermore, since the one-way telescopic rod 31 may be manipulated / tested before it is installed between the two sets of chain clamping assemblies 1, a second channel 315 is also provided inside the piston cylinder 312. The first channel 314 and the second channel 315 are symmetrically arranged. A first collar 316 is rotatably connected to the top wall inside the piston cylinder 312, and a second collar 317 is rotatably connected to the bottom wall inside the piston cylinder 312. Sealing rings are provided on the outer walls of both the first collar 316 and the second collar 317 to improve the sealing and friction between them and the inner wall of the piston cylinder 312. The upper ends of the first channel 314 and the second channel 315 are aligned with the side wall of the first collar 316, and the lower ends of the first channel 314 and the second channel 315 are aligned with the side wall of the second collar 317. The first collar 316 has two sets of symmetrically arranged upper movable channels extending from its side wall to its bottom wall. The one-way valves include a first one-way valve 3161 and a second one-way valve 3162, which are respectively installed in the two sets of upper movable channels and have opposite conveying directions. The second collar 317 has a lower movable channel 3171 extending from its side wall to its top wall.

[0065] Under normal circumstances, such as Figure 8 As shown, the lower end of the first channel 314 is aligned with the lower movable channel 3171 of the second sleeve ring 317, and the upper end of the first channel 314 is aligned with the upper movable channel of the first sleeve ring 317. At this time, the first chamber and the second chamber are connected through the first channel 314, and the hydraulic oil in the first chamber is unidirectionally transported to the second chamber through the first check valve 3161, so as to realize the unidirectional extension of the unidirectional telescopic rod 31.

[0066] The piston 313 and piston rod 311 have a circular structure. When the piston 313 moves to the upper limit and abuts against the bottom of the first collar 316, the piston rod 311 drives the piston 313 to rotate 180°. The piston 313 drives the first collar 316 to rotate along with it through friction, so that the two sets of upper moving channels alternate positions. At this time, the first chamber and the second chamber are connected through the first channel 314. The hydraulic oil in the second chamber is unidirectionally transported to the first chamber through the second one-way valve 3162, realizing the unidirectional shortening of the one-way telescopic rod 31.

[0067] Until the piston 313 moves to the lower limit and abuts against the top of the second collar 317, the piston rod 311 drives the piston 313 to rotate 180°. The piston 313 drives the second collar 317 to rotate 180° along with it through friction, so that the lower movable channel of the second collar 317 is aligned with the lower end of the second channel 315. At this time, the first chamber and the second chamber are connected through the second channel 315. The hydraulic oil in the first chamber is unidirectionally transported to the second chamber through the first one-way valve 3161, realizing the unidirectional extension of the one-way telescopic rod 31.

[0068] Until the piston 313 moves to the upper limit and abuts against the bottom of the first collar 316, the piston rod 311 drives the piston 313 to rotate 180°. The piston 313 drives the first collar 316 to rotate 180° through friction, so that the two sets of upper movable channels of the first collar 316 alternate positions. At this time, the first chamber and the second chamber are connected through the second channel 315. The hydraulic oil in the second chamber is unidirectionally transported to the first chamber through the second one-way valve 3162, realizing the unidirectional shortening of the one-way telescopic rod 31.

[0069] Repeat the above actions in a regular pattern. When the one-way telescopic rod 31 is not installed between the two sets of chain clamping assemblies 1, the one-way telescopic rod 31 can be extended or shortened. When the one-way telescopic rod 31 is installed between the two sets of chain clamping assemblies 1, the distance between the two sets of chain clamping assemblies 1 is less than the maximum length of the one-way telescopic rod 31, so that the piston 313 can never abut against the bottom wall of the first collar 316, so that the one-way telescopic rod 31 can only extend in one direction at this time.

[0070] The pull rope 2 is located on the outside of the bend of the bent part 100; as shown Figure 11As shown, the pull rope 2 includes a cylinder 21, two sets of plugs 22, and a steel wire rope 25. Inside the cylinder 21 is a second left-right turning screw-nut pair transmission structure 23 and two sets of guide wheels 24. The second left-right turning screw-nut pair transmission structure 23 drives the two sets of guide wheels 24 to move vertically and linearly within the cylinder 21, moving closer or further apart. The steel wire rope 25 passes through the cylinder 21 and... Figure 11 The diagram shows two sets of guide wheels 24 surrounding the perimeter.

[0071] The steel wire rope 25 has a closed loop structure at both the upper and lower ends;

[0072] In use, the upper end of the wire rope 25 is passed through the upper through hole 122 and lower through hole 132 at the same position on the upper chain clamping assembly 1 and inserted into the inner cavity of the end of the upper set of plugs 22. Then, the screw at the end of the plug 22 passes through the upper end of the wire rope 25 to fix the upper end of the wire rope 25 to the inner cavity of the end of the plug 22. Similarly, the lower end of the wire rope 25 is passed through the upper through hole 122 and lower through hole 132 at the same position on the lower chain clamping assembly 1 and inserted into the end of the lower set of plugs 22. The screw at the end of the plug 22 passes through the lower end of the steel wire rope 25 to fix the lower end of the steel wire rope 25 to the inner cavity of the end of the plug 22. Then, the upper end of the plug 22 is inserted into the upper through hole 122 / lower through hole 132 of the upper chain clamping assembly 1, and the lower end of the plug 22 is inserted into the upper through hole 122 / lower through hole 132 of the lower chain clamping assembly 1 to isolate the screw from the outside, so that the end of the steel wire rope 25 cannot be removed from the inner cavity of the end of the plug 22.

[0073] Then, using an external tool, the lead screw in the second left-right turn lead screw nut pair transmission structure 23 is rotated, causing the two sets of guide wheels 24 to move away from each other, thereby shortening the distance between the upper and lower sets of plugs 22 and shortening the distance between the two ends of the wire rope 25. This achieves the correction of the bent part of the bent component 100.

[0074] Furthermore, a folding cover 26 is provided at the end of the plug 22. After calibration, the free end of the folding cover 26 is glued to the top / bottom wall of the cylinder 21. At this time, the end of the screw in the second left-right turning screw nut pair transmission structure 23 is located inside the folding cover 26. Then, concrete is filled into the folding cover 26. After the concrete solidifies, the plug 22 and the cylinder 21 are fixed together by the concrete. At this time, the pull rope has a certain compressive and supporting capacity, avoiding the original pull rope 2 having only tensile strength but no compressive strength. At the same time, the end of the screw in the second left-right turning screw nut pair transmission structure 23 is isolated from the outside and cannot continue to operate.

[0075] It should be noted that there are multiple sets of pull ropes 2 and telescopic support rods 3.

[0076] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A building support apparatus, characterized by, The application relates to a chain clamping assembly (1), two groups of chain clamping assemblies (1) are respectively clamped and fixed at two ends of a bending part of a bending piece (100); a pull rope (2) is connected with the two groups of chain clamping assemblies (1) at two ends respectively, and the pull rope (2) is located at the outer side of the bending part of the bending piece (100); a telescopic supporting rod (3) is connected with the two groups of chain clamping assemblies (1) at two ends respectively, and the telescopic supporting rod (3) is located at the inner side of the bending part of the bending piece (100); the length of the pull rope (2) is shortened and the length of the telescopic supporting rod (3) is lengthened to correct the bending part of the bending piece (100); the chain clamping assembly (1) comprises any number of chain links (11), two adjacent groups of chain links (11) are hingedly connected through upper chain plates (12) and / or lower chain plates (13), and two groups of chain links (11) at the head and tail are connected through an adjusting assembly (15); upper through holes (122) and lower through holes (132) with the same structure are respectively formed in the upper chain plates (12) and the lower chain plates (13); first pin holes (111) are formed at two ends of the chain links (11), the upper chain plates (12) are provided with two groups of pin shafts (121) matched with the first pin holes (111), second pin holes (131) are formed at two ends of the lower chain plates (13), and the pin shafts (121) are sequentially threaded through the first pin holes (111), the second pin holes (131) and threadedly connected with one-way nuts (14); the pull rope (2) comprises a cylinder body (21), two groups of plugs (22) and a steel wire rope (25), the cylinder body (21) is internally provided with a second left-right rotating screw rod and nut pair transmission structure (23) and two groups of guide wheels (24), the second left-right rotating screw rod and nut pair transmission structure (23) is used for driving the two groups of guide wheels (24) to move close to or away from each other, the end of the plug (22) is matched with the upper through hole (122) / lower through hole (132), and the two ends of the steel wire rope (25) penetrate through the cylinder body (21) and are installed at the ends of the two groups of plugs (22) after being turned by the two groups of guide wheels (24); the telescopic supporting rod (3) comprises a one-way telescopic rod (31), the two ends of the one-way telescopic rod (31) are connected with pin rods (33) through universal hinge bases (32), and the pin rods (33) are matched with the upper through holes (122) / lower through holes (132); the one-way telescopic rod (31) comprises a piston rod (311), a piston cylinder (312) and a piston (313), the piston (313) is liquid-tightly and slidably arranged in the piston cylinder (312), and the piston rod (311) extends from the piston (313) to the outside of the piston cylinder (312); the inner cavity of the piston cylinder (312) is filled with liquid, the piston (313) divides the inner cavity of the piston cylinder (312) into a first cavity and a second cavity, a first channel (314) communicating the first cavity and the second cavity is further arranged in the piston cylinder (312), and a one-way valve is arranged on the first channel (314). ​ ​ ​ ​ ​ ​ 2. A building support apparatus as claimed in claim 1, wherein: The adjusting assembly (15) comprises a fixed seat (151) and two groups of moving seats (152) arranged at the upper and lower ends of the fixed seat (151), the two groups of moving seats (152) are moved on the fixed seat (151) to approach or move away from each other, a first left-right rotating screw nut pair transmission structure (153) and two groups of pin columns (154) are installed on the moving seat (152), the first left-right rotating screw nut pair transmission structure (153) is used for driving the two groups of pin columns (154) to approach or move away from each other, the pin column (154) is matched with the first pin hole (111) of the chain link (11), and the inner side wall of the first pin hole (111) is provided with a clamping groove, and the outer side of the pin column (154) is provided with a clamping assembly, and the clamping assembly is unidirectionally clamped and matched with the clamping groove.

3. A building support apparatus as claimed in claim 2, wherein: The clamping assembly comprises a moving groove (1541) arranged in the pin column (154), an inclined block (155) sliding in the transverse end of the moving groove (1541), and a vertical sliding block (158) sliding in the vertical end of the moving groove (1541), the inclined block (155) and the vertical sliding block (158) are connected through a connecting rod (157), and the first spring (156) is further arranged, the elastic force of the first spring (156) pushes the inclined surface end of the inclined block (155) to move to the outside of the vertical end of the moving groove (1541), the moving seat (152) is provided with a clamping tooth (1521) extending along the moving direction of the pin column (154), the vertical sliding block (158) is provided with a clamping hook (159) unidirectionally clamped and matched with the clamping tooth (1521), and the vertical sliding block (158) moves in the vertical end of the moving groove (1541) to realize engagement or disengagement of the clamping hook (159) and the clamping tooth (1521).

4. A building support apparatus as claimed in claim 1, wherein: The end of the plug (22) and the cylinder body (21) are provided with a folding cover (26), and the input end of the second left-right rotating screw nut pair transmission structure (23) is located in the folding cover (26); after the bending part of the bending piece (100) is corrected, the folding cover (26) is filled with concrete.

5. A building support apparatus as claimed in claim 1, wherein: The piston cylinder (312) is rotationally connected with a first ring (316) and a second ring (317), the piston cylinder (312) is further provided with a second channel (315) communicating the first cavity and the second cavity, and the first channel (314) and the second channel (315) are symmetrically arranged; the first ring (316) is located at the upper ends of the first channel (314) and the second channel (315), and the second ring (317) is located at the lower ends of the first channel (314) and the second channel (315); the first ring (316) is provided with two groups of upper movable channels arranged symmetrically, the one-way valve comprises a first one-way valve (3161) and a second one-way valve (6162), the first one-way valve (3161) and the second one-way valve (6162) are respectively installed in the two groups of upper movable channels and have opposite conveying directions, and the second ring (317) is provided with a lower movable channel (3171).

6. A building support apparatus as claimed in claim 5, wherein: The piston (313) is provided with friction lines on the upper and lower sides.

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