A water stop connection device

Abstract

The utility model provides a kind of water stop connecting device, it is related to tunnel engineering construction field, including two connecting plates and fixing device;Two connecting plates are oppositely arranged, at least two water stop belt ends are provided between two connecting plates, connecting plate includes first rubber layer, metal layer and second rubber layer, metal layer is set between first rubber layer and second rubber layer, two connecting plates are all provided bolt through-hole;Fixing device includes threaded fastener and is used for bonding two water stop belt ends sealing adhesive tape, two connecting plates are fixed by threaded fastener and form sealing structure with two water stop belt ends. By using the water stop connecting device, the overall strength of the rubber water stop belt connection is effectively improved, the water stop effect is excellent, the installation time is short and the construction is convenient.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering construction technology, and more specifically, to a water-stopping connection device. Background Technology

[0002] Due to the long tunnel length during construction, the secondary lining can only be constructed in sections. Waterstops are needed between the sections of concrete that cannot be poured continuously for waterproofing. Because of the construction sequence, the invert arch must be poured first, followed by the upper secondary lining. The connection points between the waterstops in these different stages become weak points in the waterproofing process, thus requiring waterstop joint devices to eliminate the risk of leakage. Common connection methods include cold joining and hot joining.

[0003] Cold bonding method: When using the cold bonding method, the rubber stems at the two joints of the rubber waterstop need to be flattened, roughened, and then adhesive applied. This method results in poor plasticity and low strength at the joint, and the bonded joint is prone to breakage and failure. The cold bonding method requires neat cutting and overall grinding of the protruding ridges at the "cross joint", which is cumbersome to operate, and the connection quality is not easy to control, leaving more potential water leakage risks at the joint.

[0004] Hot welding method: Hot melt welding is not suitable for construction in low-temperature environments and has high requirements for construction conditions; it requires the use of hot vulcanization molds that match the waterstop and raw rubber sheets for on-site vulcanization and hot welding, and the use of special molds is costly; it requires professional operators, the construction is difficult, and the technical level of workers is required; the hot welding equipment is large in size and heavy in weight, and the on-site construction equipment is difficult to transport and operate.

[0005] Due to the shortcomings of the existing technology, there is an urgent need for a water-stopping connection device. Utility Model Content

[0006] The purpose of this utility model is to provide a water-stopping connection device to improve the above-mentioned problems. To achieve the above objective, the technical solution adopted by this utility model is as follows:

[0007] This application provides a water-stop connection device, characterized in that it includes: two connecting plates and a fixing device; the two connecting plates are arranged opposite to each other, and at least two water-stop strip ends are provided between the two connecting plates; the two connecting plates include a first rubber layer, a metal layer, and a second rubber layer, the metal layer being disposed between the first rubber layer and the second rubber layer; both connecting plates are provided with bolt through holes; the fixing device includes threaded fasteners and sealing tape for bonding the two water-stop strip ends, and the two connecting plates fix the two water-stop strip ends and form a sealing structure by means of the threaded fasteners.

[0008] Furthermore, the first rubber layer is disposed on the upper surface of the two connecting plates, and the first rubber layer is provided with rubber water-blocking ribs, which are strip-shaped protrusions.

[0009] Furthermore, the height of the rubber water-blocking ribs on the two connecting plates is greater than or equal to the height of the rubber water-blocking ribs on the waterstop.

[0010] Furthermore, the rubber material of the two connecting plates is the same as the rubber material of the waterstop.

[0011] Furthermore, the second rubber layer is disposed on the lower surface of the two connecting plates, and the second rubber layer is provided with rubber waterproof texture, which is barbed.

[0012] Furthermore, the metal layer is provided with a metal plate, which is vulcanized and bonded between the first rubber layer and the second rubber layer.

[0013] Furthermore, the bolt through holes are symmetrically distributed in two groups, each group including two bolt through holes. The lateral spacing between the bolt through holes is not less than 150 mm, the longitudinal spacing between the bolt through holes is not less than 100 mm, the lateral distance of the bolt through holes from the edge of the connecting plate is not less than 10 mm, and the longitudinal distance of the bolt through holes from the edge of the connecting plate is not less than 10 mm.

[0014] Furthermore, the connection form of the ends of the waterstop is an overlapping joint.

[0015] Furthermore, the connecting plate has a rectangular plate structure.

[0016] Furthermore, the sealing tape is a waterproof double-sided adhesive.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model utilizes a water-stopping connection device. In terms of water stoppage, it employs the overall rigidity of the connecting plate, the tightening force of the bolts, and the waterproof rubber texture on one side of the connecting plate to minimize the gap at the connection point. This gap is then filled tightly with waterproof sealing tape, preventing leakage. Regarding connection strength, holes are drilled in the waterstop strip, and bolts and nuts are used to securely connect the waterstop strip and the connecting plate, preventing the waterstop strip from breaking during installation. In terms of installation, it does not require highly skilled operators; installation can be performed simply by following the steps, improving installation efficiency and accelerating the construction progress.

[0019] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of this invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view of the water-stop connection device;

[0022] Figure 2 Main view of the fixed connection of the water-stop connection device;

[0023] Figure 3 This is a schematic diagram of the straight connection of the water-stopping connection device;

[0024] Figure 4 The front view shows the water-stopping connection device connected in a single line.

[0025] Figure 5 This is a schematic diagram of the cross connection of the water-stopping connection device;

[0026] Figure 6 This is a front view of the cross-shaped connection of the water-stopping connection device.

[0027] The markings in the diagram are: 10, connecting plate; 11, first rubber layer; 12, metal layer; 13, second rubber layer; 20, threaded fastener; 30, bolt through hole; 40, waterstop end; 50, sealing tape. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0029] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a water-stop connection device. The water-stop connection device includes two connecting plates 10 and a fixing device. The two connecting plates 10 are arranged opposite to each other, and at least two water-stop strip ends 40 are provided between the two connecting plates 10. The connection form between the water-stop strip ends 40 is an overlapping joint. Each connecting plate 10 includes a first rubber layer 11, a metal layer 12, and a second rubber layer 13. The metal layer 12 is disposed between the first rubber layer 11 and the second rubber layer 13. Both connecting plates 10 are provided with bolt through holes 30. The fixing device includes threaded fasteners 20 and sealing tape 50 for bonding the two water-stop strip ends 40. The two connecting plates 10 fix the two water-stop strip ends 40 with the threaded fasteners 20 to form a sealing structure.

[0031] Preferably, the first rubber layer 11 is disposed on the upper surface of the two connecting plates 10. The first rubber layer 11 is provided with rubber water-blocking ribs, which are strip-shaped protrusions with a height greater than or equal to the height of the rubber water-blocking ribs on the waterstop, ensuring that the seepage line at the connection of the waterstop end 40 is consistent with the seepage line on the waterstop at other locations. The second rubber layer 13 is disposed on the lower surface of the two connecting plates 10, and the second rubber layer 13 is provided with barbed rubber waterproof texture. During installation, the rubber waterproof texture will fit tightly against the surface of the waterstop end 40. When the threaded fastener 20 applies pressure to the connecting plate 10, the barbed rubber waterproof texture will deform, enhancing the contact density between the lower surface of the connecting plate 10 and the waterstop end 40. When installing the water-stop connection device, it is necessary to cut the rubber water-blocking ribs on the surface of the waterstop end 40 at the connection point. On-site construction operations can easily result in uneven cutting of the ribs. The barbed rubber waterproof texture can better adapt to irregular surfaces, preventing large gaps at the connection between the connecting plate 10 and the waterstop end 40. At the same time, the rubber material of the connecting plate 10 is the same as that of the waterstop, mainly natural rubber, EPDM rubber, or other rubber materials. It can also be made of thermoplastic elastomers or other polymer materials. The consistency of materials makes the fixation of the two more integrated.

[0032] Preferably, the metal layer 12 is provided with a metal plate, which can be square, rectangular, triangular, rhomboid, or other shapes. The metal plate is vulcanized between the first rubber layer 11 and the second rubber layer 13. The metal plate can be made of high-strength metal materials such as carbon steel, cast iron, aluminum alloy, stainless steel, or special metals, which enhances the overall rigidity of the water-stop connection.

[0033] Preferably, the sealing tape 50 material can be selected from: butyl rubber waterproof tape, polyethylene waterproof tape, PVC waterproof tape, hot melt waterproof tape, polyimide waterproof tape, polyurethane waterproof tape, silicone waterproof tape, etc., which are double-sided adhesive tapes with sealing function.

[0034] like Figure 3 and Figure 4 As shown, the connecting plate 10 has a rectangular plate structure. The bolt through holes 30 are symmetrically distributed in two groups on the connecting plate 10. Each group includes two bolt through holes 30. The lateral spacing between the bolt through holes 30 is not less than 150mm, the longitudinal spacing between the bolt through holes 30 is not less than 100mm, the lateral distance of the bolt through holes 30 from the edge of the connecting plate 10 is not less than 10mm, and the distance of the bolt through holes 30 from the edge of the connecting plate 10 is not less than 10mm.

[0035] Preferably, the water-stop connection device utilizes threaded fasteners 20 for mechanical connection. The threaded fasteners 20 include bolts, nuts, and washers. Washers are placed between the nut and the connecting plate 10. The washers can be flat washers, spring washers, sealing washers, anti-slip washers, etc., and can be made of materials such as steel, stainless steel, brass, nylon, and rubber. The washers mainly increase the contact area between the nut and the plate, reduce pressure concentration, prevent the nut from loosening, and seal the connection. The mechanical connection is simple to operate and can adapt to the connection between waterstops under various adverse working conditions. It also solves the problem that thermal bonding methods cannot be implemented in tunnels.

[0036] Preferably, this water-stop connection device is suitable for longitudinal and circumferential single-line connections between embedded rubber waterstops, embedded self-adhesive rubber waterstops, back-adhesive rubber waterstops, and back-adhesive self-adhesive rubber waterstops, as well as for longitudinal and circumferential cross connections with these types of waterstops.

[0037] Furthermore, this application discloses the connection operation method of the above-mentioned water-stop connection device:

[0038] One-word connection operation method: such as Figure 3As shown, when connecting longitudinal waterstops, a straight connection is required. First, mark the ends of the two longitudinal waterstops to be connected according to the dimensions of the connecting plate 10. Use the matching cutting tool to cut off the protruding ribs of the ends 40 of the two longitudinal waterstops along the lines. Then, use a hand drill to drill holes in the bolt through holes 30, aligning the ends 40 of the waterstops with the holes. Drilling can be done sequentially or together (Note: When drilling together, a fixing clamp is needed to secure the waterstops). After drilling, wipe the surface of the waterstops with a cloth, and then connect a connecting plate. The plate 10 is placed at the bottom of one of the waterstop ends 40, with the rubber waterproof texture on the lower surface of the connecting plate 10 facing the waterstop end 40, so that the four bolt through holes 30 are aligned with the holes drilled at the end 40 of the waterstop. The sealing tape 50 is then bonded to the contact surface between the ends of the two longitudinal waterstops. Then, on the placed waterstop, another waterstop and another connecting plate 10 are placed from bottom to top, so that the holes are aligned vertically. Bolts, washers and nuts are placed in sequence, and finally the nuts are tightened with a wrench.

[0039] Cross-connection operation method: such as Figure 5 As shown, a cross-connection method is required when connecting longitudinal and circumferential waterstops. First, draw lines according to the dimensions of the connecting plate 10 for the longitudinal waterstop and the two circumferential waterstops to be connected. Then, use the matching cutting tool to cut off the protruding ribs of the waterstops along the lines. Then, use a power drill to drill holes in the waterstop end 40, aligning it with the bolt through-hole 30. Drilling can be done sequentially or with all three waterstops drilled together (Note: Drilling all three waterstops together requires a fixing clamp). After drilling, wipe the surface of the waterstop with a cloth. Then, place a connecting plate 10 at the bottom of the longitudinal waterstop, aligning the four bolt through-holes 30 with the holes drilled at the end 40 of the waterstop. Apply sealing tape 50 to the contact surface between the longitudinal waterstop and the two circumferential waterstops. Next, place two circumferential waterstops and another connecting plate 10 on the longitudinal waterstop from bottom to top, aligning the holes vertically. Place the bolts, washers, and nuts in sequence, and finally tighten the nuts with a wrench.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A water-stopping connection device, characterized in that, include: Two connecting plates (10) are arranged opposite each other, and at least two waterstop ends (40) are provided between the two connecting plates (10). The two connecting plates (10) include a first rubber layer (11), a metal layer (12) and a second rubber layer (13). The metal layer (12) is disposed between the first rubber layer (11) and the second rubber layer (13). Both connecting plates (10) are provided with bolt through holes (30). The fixing device includes a threaded fastener (20) and a sealing tape (50) for bonding the two ends (40) of the waterstop. The two connecting plates (10) fix the two ends (40) of the waterstop by the threaded fastener (20) and form a sealing structure.

2. The water-stopping connection device according to claim 1, characterized in that: The first rubber layer (11) is disposed on the upper surface of the two connecting plates (10), and the first rubber layer (11) is provided with rubber water-blocking ribs, which are strip-shaped protrusions.

3. The water-stopping connection device according to claim 2, characterized in that: The height of the rubber water-blocking ribs on the two connecting plates (10) is greater than or equal to the height of the rubber water-blocking ribs on the waterstop.

4. The water-stopping connection device according to claim 3, characterized in that: The rubber material of the two connecting plates (10) is the same as that of the waterstop.

5. The water-stopping connection device according to claim 1, characterized in that: The second rubber layer (13) is disposed on the lower surface of the two connecting plates (10), and the second rubber layer (13) is provided with rubber waterproof texture, which is barbed.

6. The water-stopping connection device according to claim 1, characterized in that: The metal layer (12) is provided with a metal plate, which is vulcanized between the first rubber layer (11) and the second rubber layer (13).

7. The water-stopping connection device according to claim 1, characterized in that: The bolt through holes (30) are symmetrically distributed in two groups, each group including two bolt through holes (30). The lateral spacing between the bolt through holes (30) is not less than 150mm, the longitudinal spacing between the bolt through holes (30) is not less than 100mm, the lateral distance of the bolt through holes (30) from the edge of the connecting plate (10) is not less than 10mm, and the longitudinal distance of the bolt through holes (30) from the edge of the connecting plate (10) is not less than 10mm.

8. The water-stopping connection device according to claim 1, characterized in that: The connection form of the waterstop end (40) is an overlapping joint.

9. The water-stopping connection device according to claim 1, characterized in that: The connecting plate (10) is a rectangular plate structure.

10. The water-stopping connection device according to claim 1, characterized in that: The sealing tape (50) is a waterproof double-sided adhesive.

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