A tension bolt device

Abstract

The present invention is applicable to the field of building construction and provides a tension bolt device, comprising: a first pair of tie rods; a second pair of tie rods; a water-stop assembly connecting the first pair of tie rods and the second pair of tie rods, the water-stop assembly comprising water-stop plates integrally formed at the ends of the first pair of tie rods and the first pair of tie rods, a connecting assembly located between the water-stop plates at the ends of the first pair of tie rods and the second pair of tie rods and connected in cooperation with the water-stop plates, a waterproof arrangement between the connecting assembly and the water-stop plates; a plugging member respectively arranged on the first pair of tie rods and the second pair of tie rods, for abutting against the wall formwork when pouring the wall; a locking assembly respectively arranged on the first pair of tie rods and the second pair of tie rods, for tensioning and fixing to the outside of the wall formwork. The present invention can avoid the occurrence of cracks in the water-stop plates due to welding, which affects the water-stop effect or even loses the water-stop performance.

Description

Technical Field

[0001] The invention belongs to the field of building construction, and in particular relates to a tension bolt device. Background Art

[0002] Tension bolts (or tension screws) are used to tie the inner and outer wall formwork together, bearing the lateral pressure of concrete and other loads, ensuring the spacing between the inner and outer formwork meets design requirements. They also serve as fulcrums for the formwork and its supporting structure. Furthermore, when pouring the exterior walls of some basements or swimming pools, waterstops are often installed in the middle of the tension bolts to prevent water from seeping into the wall.

[0003] The existing waterstop steel plates are installed on the bolt rods through welding technology. However, if the weld of the waterstop steel plate is solidifying during the full welding process, the parts are dislocated from each other, or the welding part is not cleaned properly and slag is included, or the stress in the welding part is not eliminated well, and the two sides of the weld are heated unevenly during the welding process, it will easily cause cracks in the welding position between the waterstop steel plate and the steel pipe. Once the cracks are generated, it will affect the waterstop performance of the waterstop steel plate, and even after the cracks are generated, the welding point of the steel pipe and the waterstop steel plate will easily fall off, which will cause the tension bolts at both ends to separate, thereby changing the water penetration path and failing to achieve the waterstop effect. Summary of the Invention

[0004] The tension bolt device provided by the present invention aims to solve the problem in the prior art that water-stop steel sheets are easily cracked by welding, thereby affecting the water-stop effect.

[0005] The present invention is achieved by a tension bolt device comprising:

[0006] First pair of tie rods;

[0007] the second pair of tie rods;

[0008] a water-stop assembly connecting the first pair of tie rods and the second pair of tie rods, the water-stop assembly comprising water-stop plates integrally formed at the ends of the first pair of tie rods and the first pair of tie rods, a connecting assembly positioned between the water-stop plates at the ends of the first pair of tie rods and the second pair of tie rods and connected to the water-stop plates, and a waterproof arrangement being provided between the connecting assembly and the water-stop plates;

[0009] plugging members, respectively disposed on the first pair of tie rods and the second pair of tie rods, for abutting against the wall formwork during wall casting;

[0010] The locking components are respectively arranged on the first pair of tie rods and the second pair of tie rods, and are used for tensioning and fixing them on the outer side of the wall formwork.

[0011] Furthermore, the connection component includes:

[0012] a connecting member, provided between the water stop plates at the ends of the first pair of tie rods and the ends of the second pair of tie rods;

[0013] A limit piece is a separate splicing sleeve arranged on the outside of the connecting piece and the water stop plate. The limit piece is movably connected to the connecting piece and can move in a direction away from the connecting piece. Each part of the limit piece is provided with a limit column on the side facing the water stop plate. The water stop plate is provided with a limit groove that cooperates with the limit column. The inner surface of the limit piece and the splicing part are provided with a waterproof layer.

[0014] A pre-tightening member is provided in the connecting member and provides the limiting member with a pre-tightening force for the limiting column to cooperate with the limiting groove.

[0015] Furthermore, a connecting column is provided on the side of the limiting member facing the connecting member, a limiting portion is provided on the end of the connecting column away from the limiting member, an accommodating cavity is provided in the connecting member, and an opening for the connecting column to pass through is opened on the cavity wall on the side facing the limiting member, and the connecting column can move in the accommodating cavity through the opening to drive the limiting column to disengage from the limiting groove or cooperate with the limiting groove, and the pre-tightening member is placed in the accommodating cavity and its two ends are respectively in contact with the limiting portion and the cavity wall of the accommodating cavity.

[0016] Furthermore, a water-stop gasket is provided between the water-stop plate and the connecting piece.

[0017] Furthermore, a groove is provided on a side of the water stop plate facing the connecting piece, and the water stop gasket is placed in the groove and protrudes from the surface of the water stop plate.

[0018] Furthermore, the first pair of pull rods includes a main rod and a telescopic rod, one end of the telescopic rod is telescopically connected to the main rod, the water stop plate is integrally formed at one end of the main rod that is not connected to the telescopic rod, and the plug component and the locking assembly are both arranged on the telescopic rod.

[0019] Furthermore, the telescopic rod includes a sleeve and an extension rod, one end of the sleeve is inserted into the main rod and can be telescopic relative to the main rod, the inner wall of the sleeve is provided with a waterproof layer, the plugging component is fixedly connected to the end of the sleeve away from the water stop plate, the extension rod is threadedly connected to the plugging component, and the locking assembly is provided on the extension rod.

[0020] Furthermore, the plug component includes a sealing plug, a threaded sleeve and a terminal end portion which are integrally formed in sequence, the terminal end portion is connected to the sleeve, the end of the sleeve connected to the terminal end portion is provided with a connecting block, the terminal end portion is provided with a receiving groove which can accommodate the connecting block, the connecting block is placed in the receiving groove, the fastener passes through the sealing plug, the threaded sleeve and the receiving groove in sequence and is threadedly connected to the connecting block, and the end portion of the extension rod which cooperates with the threaded sleeve is provided with an avoidance groove which can accommodate the head of the fastener.

[0021] Furthermore, the locking assembly includes a nut and a washer, the nut and the washer are both sleeved on the first pair of tie rods, the nut is located on the side of the washer away from the second pair of tie rods, and the nut is threadedly engaged with the first pair of tie rods.

[0022] The beneficial effects achieved by the present invention are as follows: the one-piece connecting rod structure located inside the wall space in the prior art is changed into a structure divided into two, and the solution of directly welding the water stop plate to this part in the prior art is changed into a technical solution of using a water stop assembly to tightly connect the first pair of tie rods and the second pair of tie rods that are divided into two to form a whole and perform a waterproofing arrangement. In this way, it is avoided that the water stop plate and the tie rod are welded in a manner that causes the welding joints to be easily cracked due to the fact that when the weld is solidifying during the full welding process, the parts are dislocated with each other, or the welding parts are not cleaned properly to cause slag inclusions, or the stress in the welding parts is not eliminated well, and the two sides of the weld are heated unevenly during the welding process, etc., thereby affecting the water-stopping performance of the water stop plate and even causing the water stop plate and the connecting rod to fall off and lose the water-stopping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a scene structure diagram of a tension bolt device provided by the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of a tension bolt device provided by the present invention;

[0025] Figure 3 This is a cross-sectional view of a tension bolt device provided by the present invention;

[0026] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a cross-sectional view of the matching structure of a limiter and a water stop plate of a tension bolt device provided by the present invention;

[0028] Figure 6 This is an assembly structure diagram of a water stop plate and a water stop gasket of a tension bolt device provided by the present invention;

[0029] Figure 7 This is a structural diagram of a plug component of a tension bolt device provided by the present invention;

[0030] Figure 8 yes Figure 3 Enlarged view of point B in the middle.

[0031] Description of Figure Numbers:

[0032] 1. First pair of tie rods; 11. Main rod; 12. Telescopic rod; 121. Sleeve; 1211. Connecting block; 122. Extension rod; 1221. Avoidance groove; 2. Second pair of tie rods; 3. Water-stop assembly; 31. Water-stop plate; 311. Limiting groove; 312. Groove; 32. Connecting assembly; 321. Connecting piece; 3211. Opening; 3212. Accommodating cavity; 322. Limiting piece; 322a. Split part; 3221. Limiting column; 3222. Connecting column; 3223. Limiting part; 3224. Waterproof layer; 33. Pre-tightening piece; 34. Water-stop gasket; 4. Plug component; 41. Sealing plug; 42. Threaded sleeve; 43. End part; 431. Accommodating groove; 5. Locking assembly; 51. Nut; 52. Washer; 6. Fastener; 10. Concrete component; 20. Wall formwork. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] See also Figure 1-Figure 4The embodiment of the present invention provides a tension bolt device, including a first pair of tension rods 1, a second pair of tension rods 2, a water-stop assembly 3, a plug component 4 and a locking assembly 5. The water-stop assembly 3 connects the first pair of tension rods 1 and the second pair of tension rods 2, and the water-stop assembly 3 includes water-stop plates 31 integrally formed at the ends of the first pair of tension rods 1 and the first pair of tension rods 1, respectively, and a connecting assembly 32 located between the water-stop plates 31 at the ends of the first pair of tension rods 1 and the second pair of tension rods 2 and connected to the water-stop plates 31. The water-stop plates 31 are integrally formed with the first pair of tension rods 1, the water-stop plates 31 and the second pair of tension rods 2, which can improve the connection strength between the water-stop plates 31 and the first pair of tension rods 1, the water-stop plates 31 and the second pair of tension rods 2, and prevent the water-stop plates 31 and the first pair of tension rods 1, the water-stop plates 31 and the second pair of tension rods 2 from falling off under the action of external force, and at the same time prevent the water-stop plates 31 and Gaps are generated between the first pair of tie rods 1, the water stop plate 31, and the second pair of tie rods 2, resulting in water seepage. A waterproof arrangement is provided between the connecting component 32 and the water stop plate 31. In this way, after the connecting component 32 connects the first pair of tie rods 1 and the second pair of tie rods 2 into one, it can ensure that the entire interior of the entire water stop component 3 forms a closed structure relative to its own exterior, preventing water from penetrating from the water stop component 3 and affecting the water-stopping effect of the water stop component 3. The plugging components 4 are respectively arranged on the first pair of tie rods 1 and the second pair of tie rods 2, and are used to abut against the wall formwork 20 when pouring the wall. The locking components 5 are respectively arranged on the first pair of tie rods 1 and the second pair of tie rods 2, and are used to tension and fix them to the outside of the wall formwork 20.

[0035] During installation, the first pair of tie rods 1 and the second pair of tie rods 2 are connected into an integrated structure using a water-stop assembly 3. The parts of the first pair of tie rods 1 and the second pair of tie rods 2 and the water-stop assembly 3 close to the water-stop assembly 3 are all placed in the wall space surrounded by the wall formwork 20. The ends of the first pair of tie rods 1 and the second pair of tie rods 2 facing away from the water-stop assembly 3 respectively penetrate the wall formwork 20 and extend out of the wall formwork 20. The plugging components 4 in the first pair of tie rods 1 and the second pair of tie rods 2 are also placed in the wall space and abut against the inner side of the wall formwork 20, which are used to waterproof the positions where the first pair of tie rods 1 and the second pair of tie rods 2 penetrate the wall formwork 20, to prevent water from flowing out of the wall formwork 20 from this position after concrete is poured. The locking components 5 are respectively fixed to the first pair of tie rods 1 and the second pair of tie rods 2 outside the wall formwork 20 and abut against the outer side of the wall formwork 20, thereby strengthening the wall formwork 20.

[0036] The embodiment provided by the present invention changes the integrated connecting rod structure located inside the wall space in the prior art into a structure divided into two, and changes the solution of directly welding the water stop plate 31 to this part in the prior art to a technical solution of using a water stop component 3 to tightly connect the first pair of tie rods 1 and the second pair of tie rods 2 that are divided into two to form a whole and perform a waterproof setting. In this way, it can be avoided that the water stop plate 31 and the tie rods are welded in a manner that causes the welding joints to be easily cracked due to the fact that when the weld is solidifying during the full welding process, the parts are dislocated from each other, or the welding parts are not cleaned cleanly to cause slag inclusions, or the stress in the welding parts is not eliminated well, and the two sides of the weld are heated unevenly during the welding process, etc., thereby affecting the water-stopping performance of the water stop plate 31 and even causing the water stop plate 31 and the connecting rod to fall off, thereby losing the water-stopping effect.

[0037] See also Figure 4-Figure 5Specifically, the connecting assembly 32 includes a connecting piece 321 and a limiting piece 322. The connecting piece 321 is arranged between the water stop plate 31 at the end of the first pair of tie rods 1 and the end of the second pair of tie rods 2. The limiting piece 322 is spliced ​​and sleeved on the outside of the connecting piece 321 and the water stop plate 31, that is, the limiting piece 322 is completely wrapped around the outside of the connecting piece 321 and the water stop plate 31. The so-called split splicing means that the limiting piece 322 includes at least two spliced ​​split parts 322a, and at least two split parts 322a are spliced ​​around to form the limiting piece 322. The positioning member 322 is movably connected to the connecting member 321 and can move in a direction away from the connecting member 321. That is, since the positioning member 322 adopts a split splicing structure, each split portion 322a can move independently in a direction away from the connecting member 321, so that the following limiting column 3221 can be separated from the following limiting groove 311, thereby realizing the disassembly and assembly of the positioning member 322. Each part of the positioning member 322 (that is, each split portion 322a) is provided with a limiting column 3221 on the side facing the water stop plate 31, and the water stop plate 31 is provided with a The limiting groove 311 cooperates with the limiting column 3221, and the limiting column 3221 and the limiting groove 311 cooperate to make the connecting piece 321 and the water stop piece 31 provided on the first pair of tie rods 1 and the water stop piece 31 provided on the second pair of tie rods 2 connected as a whole through the limiting piece 322. At the same time, after the limiting column 3221 and the limiting groove 311 cooperate, the limiting piece 322 after the split is spliced ​​can be limited to ensure that each split part 322a is tightly spliced ​​together, making the overall water stop assembly 3 more compact and the limiting piece 322 The inner surface and joints are provided with a waterproof layer 3224 to ensure that water cannot enter between the limiting part 322 and the water stop plate 31 and between the limiting part 322 and the connecting part 321, ensuring that the entire water stop assembly 3 forms a closed structure relative to the outside. The pre-tightening part 33 is arranged in the connecting part 321 and provides a pre-tightening force for the limiting column 3221 to cooperate with the limiting groove 311 to ensure the cooperation between the limiting column 3221 and the limiting groove 311, thereby avoiding falling off between the connecting assembly 32 and the water stop plate 31, thereby affecting the stability of the structure.

[0038] In this embodiment, the number of the split parts 322a of the limiting member 322 is two, and the two split parts 322a are spliced ​​together to form the limiting member 322, so that the limiting member 322 can retain better integrity, improve the wrapping performance of the limiting member 322 on the water stop plate 31 and the connecting member 321, and thus improve the structural compactness of the water stop assembly 3, and at the same time can reduce the number of limiting columns 3221 and limiting grooves 311, reduce processing costs and improve installation efficiency.

[0039] See also Figure 4When the locking cam 321 is unlocked, the locking cam 3222 is unlocked and the winch 3202 is unlocked, so the winch 3202 is unlocked. When the winch 3202 is unlocked, the winch 3202 is unlocked and the winch 3202 is unlocked. In this way, under the action of the preload member 33, the cooperation between the limiting portion 3223 and the preload member 33 ensures that the connecting column 3222 is always placed in the accommodating cavity 3212, thereby ensuring the cooperation between the limiting column 3221 and the limiting groove 311. In the initial state, the preload member 33 can keep the connecting column in the accommodating cavity 3212. At this time, the limiting component 322 is closely attached to the water stop plate 31 and the outside of the connecting component 321, and the limiting column 3221 is also kept in the limiting groove 311. When the limiting component 322 is moved away from the connecting component 321, the preload member 33 is squeezed, and the limiting column 3221 is separated from the limiting groove 311. After the limiting component 322 is released, the restoring force of the preload member 33 can drive the limiting component 322 to return to its original position, and the limiting column 3221 cooperates with the limiting groove 311.

[0040] Specifically, the preload member 33 may be, but is not limited to, a coil spring. When a coil spring is used, the coil spring may be sleeved on the outside of the connecting column 3222 and have its two ends respectively abut against the limiting portion 3223 and the wall of the accommodating cavity 3212 for easy installation.

[0041] Furthermore, the length of the connecting column 3222 is greater than that of the limiting column 3221 , so that when the limiting member 322 moves away from the connecting member 321 , the connecting column 3222 has sufficient movement to ensure that the limiting column 3221 can leave the limiting groove 311 .

[0042] Specifically, the connecting piece 321 can also be set up separately, that is, it can be set up separately at the position of the accommodating cavity 3212, so as to facilitate the installation of the preloaded piece 33 and the connecting column 3222 in the accommodating cavity 3212. The split structure is also waterproofed during assembly, that is, a waterproof layer is set at the joint, which will not be described in detail here.

[0043] See also Figure 4-Figure 6Furthermore, a water-stop gasket 34 is provided between the water-stop plate 31 and the connector 321, that is, between the water-stop plate 31 and the connector 321 on the first pair of tie rods 1, and between the water-stop plate 31 and the connector 321 on the second pair of tie rods 2. This further waterproofs the space between the water-stop plate 31 and the connector 321, further improving the waterproof performance of the internal structure of the water-stop assembly 3.

[0044] Specifically, the water-stop gasket 34 is made of expansion material and rubber. The property of the expansion material to expand when it comes into contact with water allows it to expand after absorbing water, which can prevent water from penetrating. At the same time, it occupies a large space after expansion, and can better fill the gap between the water-stop plate 31 and the connector 321, with better waterproof performance. At the same time, it can absorb excess water vapor, ensure the internal dryness of the water-stop component 3, and improve the performance of the water-stop component 3.

[0045] See also Figure 4 and Figure 6 Furthermore, a groove 312 is provided on one side of the water stop plate 31 facing the connector 321, and the water stop gasket 34 is placed in the groove 312 and protrudes from the surface of the water stop plate 31. The groove 312 can position the water stop gasket 34 to prevent the water stop gasket 34 from being misplaced.

[0046] Specifically, the water stop 31 and the connecting member 321 can be of any shape, such as square, circular, prismatic, etc. Regardless of the shape of the water stop 31 and the connecting member 321, the limiting member 322 is adapted to be mounted on the outside of the water stop 31 and the connecting member 321. In this embodiment, the water stop 31 and the connecting member 321 can be circular, and the limiting member 322 can be annular.

[0047] See also Figure 3 Furthermore, the first pair of tie rods 1 includes a main rod 11 and a telescopic rod 12. One end of the telescopic rod 12 is telescopically connected to the main rod 11. A water stop 31 is integrally formed at the end of the main rod 11 not connected to the telescopic rod 12. The plug member 4 and the locking assembly 5 are both provided on the telescopic rod 12. In this way, the length between the first and second pair of tie rods 1, 2 on both sides of the water stop assembly 3 can be adjusted according to the thickness of the concrete member 10 and the wall formwork 20, thereby adapting to different wall castings.

[0048] It should be noted that the structures of the first pair of tie rods 1 and the second pair of tie rods 2 are exactly the same. The first and second in this embodiment are not distinctions of structure, but only distinctions between the same components (including the same structure, function, effect, etc.) set in different positions, including the following description of the first railing structure, which is also possessed by the second pair of tie rods 2. Here, only the first pair of tie rods 1 are described, and the second pair of tie rods 2 with the same structure as the first pair of tie rods 1 will not be repeated.

[0049] In this embodiment, the telescopic rod 12 and the main rod 11 can directly adopt the existing automatic telescopic rod structure, which can automatically extend to a required stroke according to actual needs.

[0050] See also Figure 3 、 Figure 7-Figure 8 Furthermore, the telescopic rod 12 includes a sleeve 121 and an extension rod 122. One end of the sleeve 121 is inserted into the main rod 11 and can be extended relative to the main rod 11. That is, when an existing automatic telescopic rod is used, an extension rod 122 can be added to the automatic telescopic rod. The inner wall of the sleeve 121 is provided with a waterproof layer 3224. The waterproof layer 3224 can be provided on the entire inner wall of the sleeve 121 or on the front end of the sleeve 121. In this embodiment, an automatic telescopic rod with waterproof performance can also be directly used. The plugging member 4 is fixedly connected to the end of the sleeve 121 away from the water stop 31. The extension rod 122 is threadedly connected to the plugging member 4, and the locking assembly 5 is provided on the extension rod 122. In this way, after the wall casting is completed and the formwork is removed, the extension rod 122 can be removed for reuse, saving costs. At the same time, the extension rod 122 and the plugging member 4 are threadedly connected, making disassembly and assembly simple.

[0051] See also Figure 7 Furthermore, the plug component 4 includes a sealing plug 41, a threaded sleeve 42 and a terminal portion 43 which are integrally formed in sequence. The terminal portion 43 is connected to the sleeve 121. The end at which the sleeve 121 is connected to the terminal portion 43 is provided with a connecting block 1211. The terminal portion 43 is provided with a receiving groove 431 which can accommodate the connecting block 1211. The connecting block 1211 is placed in the receiving groove 431. The fastener 6 passes through the sealing plug 41 and the threaded sleeve 42 in sequence and penetrates the receiving groove 431 and is threadedly connected to the connecting block 1211. The end of the extension rod 122 which cooperates with the threaded sleeve 42 is provided with an avoidance groove 1221 which can accommodate the head of the fastener 6. In this way, the connection between the extension rod 122 and the plug member 4, and the connection between the plug member 4 and the sleeve 121 can be independently operated. That is, when the extension rod 122 is rotated, the presence of the avoidance groove 1221 will not cause the fastener 6 to rotate, and thus will not cause the plug member 4 and the sleeve 121 to loosen, thereby preventing the sleeve 121 from leaking to the outside. For example, when the wall is poured after the extension rod 122 is installed, the loosening of the plug member 4 will cause the moisture in the concrete to leak out from the outer wall of the sleeve 121. In the prior art, the plug member 4 and the sleeve 121 are also connected by threads. When the extension rod 122 is rotated, the rotation between the plug member 4 and the sleeve 121 will be driven at the same time, thereby causing the plug member 4 to loosen, resulting in leakage.

[0052] See also Figure 2Specifically, the locking assembly 5 includes a nut 51 and a washer 52. The nut 51 and the washer 52 are both sleeved on the first pair of tie rods 1. Specifically, the nut 51 and the washer 52 are both sleeved on the extension rod 122. The nut 51 is located on the side of the washer 52 away from the second pair of tie rods 2. The nut 51 is threadedly engaged with the first pair of tie rods 1, that is, threadedly engaged with the extension rod 122.

[0053] In this embodiment, the extension rod 122 may be a screw rod, and an external thread may be partially provided on the exterior of the extension rod 122 .

[0054] In this embodiment, the first pair of tie rods 1, the second pair of tie rods 2, the locking assembly 5, and the water-stop assembly 3 are all made of steel components to ensure that the required performance can be achieved in actual use.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tension bolt device, characterized in that: include: First pair of tie rods; the second pair of tie rods; a water-stop assembly connecting the first pair of tie rods and the second pair of tie rods, the water-stop assembly comprising water-stop plates integrally formed at the ends of the first pair of tie rods and the first pair of tie rods, a connecting assembly positioned between the water-stop plates at the ends of the first pair of tie rods and the second pair of tie rods and connected to the water-stop plates, and a waterproof arrangement being provided between the connecting assembly and the water-stop plates; plugging members, respectively disposed on the first pair of tie rods and the second pair of tie rods, for abutting against the wall formwork during wall casting; Locking assemblies, respectively configured on the first pair of tie rods and the second pair of tie rods, for tensioning and fixing them on the outer side of the wall formwork; The connection component includes: a connecting member, provided between the water stop plates at the ends of the first pair of tie rods and the ends of the second pair of tie rods; A limit piece is a separate splicing sleeve arranged on the outside of the connecting piece and the water stop plate. The limit piece is movably connected to the connecting piece and can move in a direction away from the connecting piece. Each part of the limit piece is provided with a limit column on the side facing the water stop plate. The water stop plate is provided with a limit groove that cooperates with the limit column. The inner surface of the limit piece and the splicing part are provided with a waterproof layer. A pre-tightening member is provided in the connecting member and provides the limiting member with a pre-tightening force for the limiting column to cooperate with the limiting groove.

2. The tension bolt device according to claim 1, characterized in that: A connecting column is provided on the side of the limiting member facing the connecting member, and a limiting portion is provided on the end of the connecting column away from the limiting member. A accommodating cavity is provided in the connecting member, and an opening for the connecting column to pass through is opened on the cavity wall on the side facing the limiting member. The connecting column can move in the accommodating cavity through the opening to drive the limiting column to disengage from the limiting groove or cooperate with the limiting groove. The preloaded member is placed in the accommodating cavity and its two ends respectively abut against the limiting portion and the cavity wall of the accommodating cavity.

3. The tension bolt device according to claim 1, characterized in that: A water-stop gasket is provided between the water-stop plate and the connecting piece.

4. The tension bolt device according to claim 3, characterized in that: A groove is provided on one side of the water stop plate facing the connecting piece, and the water stop gasket is placed in the groove and protrudes from the surface of the water stop plate.

5. The tension bolt device according to claim 1, wherein: The first pair of pull rods includes a main rod and a telescopic rod, one end of the telescopic rod is telescopically connected to the main rod, the water stop plate is integrally formed at the end of the main rod that is not connected to the telescopic rod, and the plug component and the locking assembly are both arranged on the telescopic rod.

6. The tension bolt device according to claim 5, characterized in that: The telescopic rod includes a sleeve and an extension rod. One end of the sleeve is inserted into the main rod and can be extended and retracted relative to the main rod. The inner wall of the sleeve is provided with a waterproof layer. The plugging component is fixedly connected to the end of the sleeve away from the water stop plate. The extension rod is threadedly connected to the plugging component, and the locking assembly is provided on the extension rod.

7. The tension bolt device according to claim 6, characterized in that: The plug component includes a sealing plug, a threaded sleeve and a terminal portion which are integrally formed in sequence. The terminal portion is connected to the sleeve. The end of the sleeve connected to the terminal portion is provided with a connecting block. The terminal portion is provided with a receiving groove which can accommodate the connecting block. The connecting block is placed in the receiving groove. The fastener passes through the sealing plug and the threaded sleeve in sequence and penetrates the receiving groove and is threadedly connected to the connecting block. The end of the extension rod which cooperates with the threaded sleeve is provided with an avoidance groove which can accommodate the head of the fastener.

8. The tension bolt device according to claim 1, wherein: The locking assembly includes a nut and a washer. The nut and the washer are both sleeved on the first pair of tie rods. The nut is located on the side of the washer away from the second pair of tie rods. The nut is threadably matched with the first pair of tie rods.

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