Roof expansion joint waterproof structure
By designing the waterproof structure of the roof expansion joint and using the combination of insert rods and waterproof components, the problem of water seepage after weathering of the expansion joint waterproof structure is solved, and effective water separation isolation and waterproofing effect of the expansion joint is achieved.
Patent Information
- Application Number
- CN202421766435.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The waterproof structure of the existing roof expansion joint is prone to cracks after a long period of weathering, causing external water to penetrate into the expansion joint, causing external wall seepage and economic losses.
A roof expansion joint waterproof structure is designed, including insert rods and waterproof components. There are sponge blocks and water storage tanks inside the insert rod. The sponge block absorbs moisture and guides it into the water storage tank. When the moisture in the water storage tank reaches a certain amount, the piston shrinks and causes the water to flow into the cavity to react with the cement powder, causing expansion to push the sealing block to extend out of the closed expansion joint.
The expansion joints are covered and supported, absorbed and stored after moisture permeation, and when the specified amount is reached, the sealing block extends out of the closed expansion joint to ensure waterproofing effect and avoid damage caused by external moisture permeation.
Smart Images
Figure CN222796753U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of house building structures, in particular to a roof expansion joint waterproof structure. Background Art
[0002] Roof expansion joints are a special type of gap that is mainly used to relieve the stress generated when a building is affected by external factors to ensure the safety and stability of the building. The main function of a roof expansion joint is to disperse and absorb the stress through its own contraction and expansion when the building is subjected to external forces or temperature changes, thereby maintaining the overall stability and balance of the building. An expansion joint is a structural joint set at an appropriate position along the construction joint direction of a building or structure to prevent cracks or damage to the structure of a building component due to climate and temperature changes.
[0003] However, in the current existing technology, since expansion joints and waterproof covers are used outdoors, cracks will appear in the waterproof structure after long-term weathering, so that external falling water will penetrate into the expansion joints through the cracks, causing water seepage and damage to the exterior wall. In addition, it is difficult to repair leakage in the expansion joints, which often leads to huge economic losses. Utility Model Content
[0004] The utility model aims to provide a roof expansion joint waterproof structure to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A waterproof structure for a roof expansion joint comprises an insertion rod, a waterproof component for waterproofing the expansion joint is arranged inside the insertion rod, the waterproof component comprises a cover plate arranged at one end of the insertion rod, a sponge block is arranged on the outer wall of the insertion rod, a water storage tank is arranged inside the insertion rod, a piston and a spring are arranged inside the water storage tank, a cavity is arranged below the water storage tank, a top rod is arranged inside the cavity, a positioning groove and a hole groove are arranged at the bottom of the cavity, a connecting rod is arranged inside the positioning groove, and a sealing block is arranged on one end of the connecting rod close to the hole groove.
[0007] As a preferred solution of the utility model, the cover plate is connected to one end of the insertion rod by bolts, a rubber strip is provided at the bottom of the cover plate and abuts against the top of the expansion joint, and the insertion rod extends away from one end of the cover plate into the expansion joint.
[0008] As a preferred solution of the utility model, the sponge block is embedded and connected with the inner wall of the insertion rod, and the other end extends to the outside of the insertion rod and abuts against the inner wall of the expansion joint. The sponge block is connected to the water storage tank.
[0009] As a preferred solution of the utility model, the piston is located in the through hole at the bottom of the water tank and is slidably connected to the inner wall of the through hole. The spring is located in the through hole and both ends are connected to the inner wall of the through hole and the piston respectively by welding.
[0010] As a preferred solution of the utility model, the cavity is loaded with cement powder, the push rod is located in the cavity and is slidably connected to the bottom of the cavity through a slide rail, and the other end of the push rod extends into the positioning groove and abuts against the connecting rod.
[0011] As a preferred solution of the utility model, the positioning groove is communicated with the hole groove, and a protruding rod is provided on the inner wall of the positioning groove, which abuts against the outer wall of the connecting rod. The connecting rod is located in the positioning groove and is slidably connected to the inner wall of the positioning groove through a slide rail. The other end of the connecting rod extends into the hole groove and is connected to the sealing block through a bolt, and the sealing block is folded and contracted in the hole groove.
[0012] Compared with the prior art, the utility model has the following beneficial effects: in response to the problems raised in the background technology, the present application adopts a waterproof component, the plug rod can be inserted into the expansion slot to cover the expansion slot, and the top cover plate is used to prevent water from approaching the expansion slot, and the water is guided to drain to both sides of the expansion slot, while isolating the water, and the plug rod in the expansion joint can support the expansion joint when it is deformed due to temperature changes;
[0013] When moisture enters the expansion joint after the cover plate is weathered, it is absorbed by the sponge outside the plug rod and guided into the water storage tank; the water in the water storage tank squeezes and contracts the piston, and when the piston moves to an oblique angle, it flows into the cavity and reacts with the cement powder in the cavity to expand, causing the top rod to abut against the connecting rod, pushing the connecting rod to expand and contract, so that the sealing block extends from the hole groove and is distributed at the bottom of the plug rod, thereby sealing the inner wall of the expansion groove and improving the waterproof effect.
[0014] The utility model covers and supports the expansion joint, absorbs and stores moisture after the moisture penetrates into the expansion slot, and when the storage reaches a specified amount, the sealing block extends and closes the expansion slot, thereby ensuring the waterproof effect of the expansion slot. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;
[0016] Figure 2 This is a cross-sectional view of the interior of the plug rod of the utility model;
[0017] Figure 3 It is an enlarged view of part A of the utility model.
[0018] In the figure: 1, plug rod; 2, cover plate; 3, sponge block; 4, water storage tank; 401, piston; 402, spring; 5, cavity; 501, push rod; 6, positioning groove; 601, hole groove; 7, connecting rod; 701, sealing block. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.
[0020] Example
[0021] See also Figure 1-3 The utility model provides a technical solution: a roof expansion joint waterproof structure, including a plug rod 1, a waterproof component for waterproofing the expansion joint is arranged inside the plug rod 1, and the waterproof component includes a cover plate 2 arranged at one end of the plug rod 1, and the cover plate 2 can cover the expansion joint after the plug rod 1 is embedded in the expansion joint. The inclined surface on the top of the cover plate 2 can guide moisture away from the expansion joint. When the plug rod 1 is embedded in the expansion joint, the expansion joint can be auxiliary supported to reduce the deformation amplitude of the expansion joint caused by temperature changes. The outer wall of the plug rod 1 is provided with a sponge block. 3, the sponge block 3 can absorb water after entering the expansion joint, and the absorbed water is guided to flow into the water storage tank 4 through the inclination angle of the sponge block 3. The water storage tank 4 is provided inside the plug rod 1, and the water storage tank 4 is used to store the water absorbed by the sponge block 3. The water storage tank 4 is provided inside the water storage tank 4. The piston 401 can seal the bottom of the water storage tank 4 to prevent the water from directly flowing into the cavity 5. The spring 402 is used to support the piston 401 (when the water in the water storage tank 4 continues to increase, the water weight makes the water storage tank 4 The piston 401 contracts downward in the water storage tank 4, and when it contracts to an oblique angle close to the cavity 5, the stored water can flow into the cavity 5 at one time. A cavity 5 is arranged below the water storage tank 4, and cement powder is loaded in the cavity 5. When the water enters the cavity 5, it reacts with the cement powder and generates expansion pressure. At the same time, the cement expands and is transmitted to the push rod 501, so that the push rod 501 extends into the positioning groove 6, thereby pushing the connecting rod 7 to move in the positioning groove 6. The push rod 501 is arranged inside the cavity 5, and a positioning Slot 6 and hole slot 601, the convex rod in the positioning slot 6 can support the connecting rod 7 to prevent the sealing block 701 from extending out in the normal state, the positioning slot 6 is provided with a connecting rod 7, the connecting rod 7 is used to connect the sealing block 701, the connecting rod 7 is provided with a sealing block 701 at one end close to the hole slot 601, the sealing block 701 is folded and contracted in the hole slot 601 in the normal state, when the connecting rod 7 is extended, it pushes the sealing block 701 to extend out of the hole slot 601, and at the same time, the sealing block 701 is expanded by its own resilience and abuts against the inner wall of the expansion joint to close the expansion joint.
[0022] For example, please refer to Figure 1-3The cover plate 2 is connected to one end of the plug rod 1 by bolts, a rubber strip is provided at the bottom of the cover plate 2 and abuts against the top of the expansion joint, the plug rod 1 extends into the expansion joint away from one end of the cover plate 2, the sponge block 3 is embedded and connected to the inner wall of the plug rod 1, and the other end extends to the outside of the plug rod 1 and abuts against the inner wall of the expansion joint, the sponge block 3 is connected to the water storage tank 4, the piston 401 is located in the through hole at the bottom of the water storage tank 4, and is slidably connected to the inner wall of the through hole, the spring 402 is located in the through hole, and both ends are respectively connected to the inner wall of the through hole and the piston 401 by welding, the cavity 5 The interior is loaded with cement powder, and the push rod 501 is located in the cavity 5 and is slidably connected to the bottom of the cavity 5 through a slide rail. The other end of the push rod 501 extends into the positioning groove 6 and abuts against the connecting rod 7. The positioning groove 6 is communicated with the hole groove 601. The inner wall of the positioning groove 6 is provided with a convex rod, which abuts against the outer wall of the connecting rod 7. The connecting rod 7 is located in the positioning groove 6 and is slidably connected to the inner wall of the positioning groove 6 through a slide rail. The other end of the connecting rod 7 extends into the hole groove 601 and is connected to the sealing block 701 through bolts. The sealing block 701 is folded and contracted in the hole groove 601. When in use, first insert the insertion rod 1 into the expansion joint, and at the same time, the rear cover plate 2 covers the top of the expansion joint. When moisture approaches the expansion joint, it will first fall onto the cover plate 2 to avoid entering the expansion joint; when moisture enters the expansion joint due to the weathering gap of the cover plate 2, it will be absorbed by the sponge block 3 on the outer wall of the insertion rod 1 and guided to flow into the water storage tank 4. When moisture accumulates in the water storage tank 4, it generates downward pressure on the piston 401, causing it to shrink to a position close to the cavity 5. Through the oblique angle close to the cavity 5, the moisture flows into the cavity 5, and reacts with the cement powder in the cavity 5 to produce expanding gas and expanding cement, pushing the top rod 501 to extend into the positioning groove 6, and pushing the connecting rod 7 to knock the convex rod open and move synchronously in the positioning groove 6, driving the sealing block 701 to extend from the hole groove 601 and expand to close the expansion joint.
[0023] The working process of the utility model is as follows: when in use, the plug rod 1 is first inserted into the expansion joint, and the rear cover plate 2 covers the top of the expansion joint. When moisture approaches the expansion joint, it will first fall on the cover plate 2 to avoid entering the expansion joint; when moisture enters the expansion joint due to the weathering gap of the cover plate 2, it will be absorbed by the sponge block 3 on the outer wall of the plug rod 1 and guided to flow into the water storage tank 4. When the moisture gathers in the water storage tank 4, it will exert downward pressure on the piston 401, causing it to shrink to a position close to the cavity 5. Through the oblique angle close to the cavity 5, the moisture flows into the cavity 5, and reacts with the cement powder in the cavity 5 to produce expansion gas and expansion cement, pushing the top rod 501 to extend into the positioning groove 6, and pushing the connecting rod 7 to knock open the convex rod and move synchronously in the positioning groove 6, driving the sealing block 701 to extend from the hole groove 601 and expand to close the expansion joint. The utility model realizes covering and supporting the expansion joint, and absorbs and stores the moisture after the moisture penetrates into the expansion groove. When the storage reaches a specified amount, the sealing block extends and closes the expansion groove, ensuring the waterproof effect of the expansion groove.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A roof expansion joint waterproof structure, comprising an insertion rod (1), wherein a waterproof component for waterproofing the expansion joint is arranged inside the insertion rod (1), characterized in that: The waterproof component comprises a cover plate (2) arranged at one end of an insertion rod (1); a sponge block (3) is arranged on the outer wall of the insertion rod (1); a water storage tank (4) is arranged inside the insertion rod (1); a piston (401) and a spring (402) are arranged inside the water storage tank (4); a cavity (5) is arranged below the water storage tank (4); a push rod (501) is arranged inside the cavity (5); a positioning groove (6) and a hole groove (601) are arranged at the bottom of the cavity (5); a connecting rod (7) is arranged inside the positioning groove (6); and a sealing block (701) is arranged at one end of the connecting rod (7) close to the hole groove (601).
2. A roof expansion joint waterproof structure according to claim 1, characterized in that: The cover plate (2) is connected to one end of the insertion rod (1) via bolts; a rubber strip is provided at the bottom of the cover plate (2) and abuts against the top of the expansion joint; and the insertion rod (1) extends away from one end of the cover plate (2) into the expansion joint.
3. A roof expansion joint waterproof structure according to claim 1, characterized in that: The sponge block (3) is embedded and connected to the inner wall of the insertion rod (1), and the other end extends to the outside of the insertion rod (1) and abuts against the inner wall of the expansion joint. The sponge block (3) is in communication with the water storage tank (4).
4. A roof expansion joint waterproof structure according to claim 1, characterized in that: The piston (401) is located in the through hole at the bottom of the water storage tank (4) and is slidably connected to the inner wall of the through hole. The spring (402) is located in the through hole, and both ends are connected to the inner wall of the through hole and the piston (401) respectively by welding.
5. A roof expansion joint waterproof structure according to claim 1, characterized in that: The cavity (5) is loaded with cement powder. The push rod (501) is located in the cavity (5) and is slidably connected to the bottom of the cavity (5) via a slide rail. The other end of the push rod (501) extends into the positioning groove (6) and abuts against the connecting rod (7).
6. A roof expansion joint waterproof structure according to claim 1, characterized in that: The positioning groove (6) is communicated with the hole groove (601), and the inner wall of the positioning groove (6) is provided with a protruding rod, which abuts against the outer wall of the connecting rod (7). The connecting rod (7) is located in the positioning groove (6) and is slidably connected to the inner wall of the positioning groove (6) through a slide rail. The other end of the connecting rod (7) extends into the hole groove (601) and is connected to the sealing block (701) through a bolt. The sealing block (701) is folded and contracted in the hole groove (601).