Housing building expansion joint device

Abstract

The utility model relates to the technical field of expansion joints, in particular to a housing construction expansion joint device which comprises elastic expansion pieces, mounting plates are hinged to the outer sides of the elastic expansion pieces through connecting rods, the mounting plates are mounted on a building, a spring is arranged between the two elastic expansion pieces, and a water stop belt is further arranged between the two mounting plates. The protection mechanism is arranged at an opening in the outer side of the expansion joint; when the expansion joint is enlarged, the protective baffle pushes the telescopic sealing tape back, and the telescopic sealing tape is thickened due to compression, so that the sealing effect on gaps formed among the positioning strip, the sliding groove and the mounting plate can be improved, and the blocking effect on impurities is improved; when the expansion joint shrinks, the protective baffle pulls the telescopic sealing belt, the telescopic sealing belt deforms and narrows accordingly, and the probability that the telescopic sealing belt makes contact with impurities can be reduced, so that the probability that the telescopic sealing belt is abraded due to friction with the impurities is reduced; the problems of environmental permeation effect, particulate matter deposition and freeze-thaw damage existing in a traditional expansion joint protection system are solved.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, and in particular to a building expansion joint device. Background Technology

[0002] In the field of building construction, expansion joints are a key structural measure, mainly used to alleviate structural stresses caused by temperature gradient changes, concrete shrinkage and creep, and uneven foundation settlement. Their core function is to create free-deformable independent structural units by pre-setting through-joints in continuous components such as walls, floors, and roofs above the building foundation, thereby effectively avoiding the risk of crack propagation or component failure caused by constrained deformation.

[0003] Current typical expansion joint protection systems mostly employ a double-movable baffle linkage structure. Specifically, a U-shaped limiting groove is machined on the lower surface of the protective baffle, and a matching limiting slider is fixed to the top of the movable baffle by high-strength bolts, forming a sliding pair with a smooth transition fit. Theoretically, this structure allows the movable baffle to maintain a stable sliding trajectory of +15mm along the building's expansion and contraction direction, ensuring the integrity of the joint coverage during building thermal expansion. However, due to the common 2-3mm manufacturing gap between the upper edge of the protective baffle and the floor slab structure, and the lack of an elastic sealing component, this structural defect in the above-mentioned expansion joint protection system can easily lead to the following chain of problems during use:

[0004] 1. Environmental infiltration effect: Water film formed by precipitation and condensation penetrates into the gaps under capillary action, causing the inside of the limiting slide groove to remain moist for a long time, which accelerates the electrolytic corrosion of the slider guide rail.

[0005] 2. Particulate matter accumulation, PM10 dust forms an abrasive paste effect in the sliding pair gap, causing the friction coefficient to surge and easily leading to the sliding resistance of the long joint body exceeding the design value;

[0006] 3. Freeze-thaw damage: Repeated freezing and swelling due to water seepage deteriorates the geometric accuracy of the groove, affecting the safety and sealing of the expansion joint protection system.

[0007] In view of this, the present invention proposes a building expansion joint device to solve the problems existing in the above-mentioned existing expansion joint protection system. Utility Model Content

[0008] In view of this, the main purpose of this utility model is to provide a building expansion joint device to solve the problems of environmental infiltration effect, particulate matter accumulation and freeze-thaw damage in traditional expansion joint protection systems.

[0009] To achieve the above objectives, the basic concept of the technical solution adopted by this utility model is as follows:

[0010] A building expansion joint device, installed at the opening of an expansion joint between two structures, comprising:

[0011] The elastic expansion joint has mounting plates hinged to its outer side by connecting rods. The mounting plates are installed on the outer surface of the structure. A spring is also provided between two elastic expansion joints, and a waterstop is also provided between two mounting plates.

[0012] The protective mechanism is installed at the outer opening of the expansion joint and is movably connected to the mounting plate. It includes a protective baffle, the bottom of which is provided with a sliding groove and a locking groove.

[0013] In a preferred embodiment, the slide is located on one side of the protective baffle, and a horizontal guide groove communicating with the slide is provided in the slide. A positioning strip is slidably arranged in the horizontal guide groove, and the positioning strip is fixedly arranged in the positioning groove on the upper end of the mounting plate.

[0014] In a preferred embodiment, the positioning strip is further provided with a telescopic sealing strip, which contacts the inner wall of the groove and slides along the inner wall of the groove.

[0015] In a preferred embodiment, the positioning strip extends through the interior of the horizontal guide groove and is slidably connected to the horizontal guide groove.

[0016] In a preferred embodiment, the vertical cross-sectional shape of the positioning strip is a side T-shape, and the horizontal guide groove is disposed above the telescopic sealing strip.

[0017] In a preferred embodiment, the slot is located on the side of the protective baffle away from the slide groove, and an anti-detachment component that is fixedly connected to another mounting plate is engaged in the slot.

[0018] In a preferred embodiment, the protective baffle is further provided with an anti-detachment groove communicating with the slot; the anti-detachment component includes a sealing strip inserted into the slot, and the side end of the sealing strip is provided with an installation cavity communicating with the anti-detachment groove. A locking block that engages with the anti-detachment groove is slidably connected in the installation cavity, and a rubber spring is provided between the locking block and the installation cavity.

[0019] In a preferred embodiment, the vertical cross-sectional shape of the anti-dislodgement groove and the locking block and the anti-dislodgement locking part are both right-angled triangular structures that match each other.

[0020] In a preferred embodiment, the inclined surfaces of the anti-detachment groove and the locking block both face away from the elastic telescopic member.

[0021] In a preferred embodiment, one end of the locking block has a locking groove, and one end of the rubber spring passes through the locking groove and is engaged with the locking groove.

[0022] Compared with the prior art, this utility model provides a building expansion joint device, which has the following beneficial effects:

[0023] 1. Through the setting of the protective mechanism, when the expansion joint increases, the protective baffle pushes back the telescopic sealing strip. At this time, the telescopic sealing strip thickens due to compression, which can improve the sealing effect of the gap formed between the positioning strip, the slide groove and the mounting plate, thereby improving the blocking effect of impurities. When the expansion joint decreases, the protective baffle pulls the telescopic sealing strip, and the telescopic sealing strip deforms and narrows accordingly. This can reduce the probability of the telescopic sealing strip coming into contact with impurities, thereby reducing the probability of the telescopic sealing strip being worn due to friction with impurities.

[0024] 2. Through the design of the protective mechanism, when the user inserts the sealing strip into the slot, the slot contacts the inclined surface of the locking block in advance and squeezes it back into the installation cavity, ensuring that the sealing strip can penetrate the slot normally. When the sealing strip and the slot are connected in place, the installation cavity is just aligned with the anti-disengagement slot. At the same time, the locking block is no longer obstructed, and the rubber spring quickly pushes the locking block out of the installation cavity and engages with the slot, firmly locking the protective baffle above the installation plate. This can reduce the installation burden on the installer, thereby improving the installation efficiency of the expansion joint device at this location; and solves the problems of environmental infiltration effect, particulate matter accumulation, and freeze-thaw damage that exist in traditional expansion joint protection systems. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is an installation effect diagram of the building expansion joint device of this utility model;

[0027] Figure 2 This is a structural schematic diagram of the building expansion joint device of this utility model;

[0028] Figure 3 This is an installation effect diagram of the mounting plate of this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the protective baffle of this utility model;

[0030] Figure 5 This is a schematic diagram of the positioning strip of this utility model;

[0031] Figure 6 This utility model Figure 2A magnified view of a section at point A in the middle;

[0032] Figure 7 This utility model Figure 2 A magnified view of a section at point B.

[0033] [Explanation of Key Component Symbols]

[0034] 1. Elastic expansion joint; 11. Clearance hole; 2. Mounting plate; 21. Expansion bolt; 22. Positioning groove; 3. Waterstop strip; 4. Protective mechanism; 41. Protective baffle; 411. Slide groove; 412. Locking groove; 413. Horizontal guide groove; 414. Anti-detachment groove; 42. Positioning strip; 43. Telescopic sealing strip; 44. Anti-detachment component; 441. Sealing strip; 4411. Mounting cavity; 442. Locking block; 4421. Locking groove; 443. Rubber spring; 5. Structure; 6. Connecting rod; 7. Spring. Detailed Implementation

[0035] The structure of this building expansion joint device will be further described in detail below with reference to the accompanying drawings and embodiments of this utility model.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 9 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0040] The following is combined Figures 1 to 7 This invention describes the structure of the building expansion joint device.

[0041] An expansion joint device for building construction is installed at the opening of an expansion joint between two structures 5. It includes an elastic expansion member 1 and a protective mechanism 4. The outer sides of the elastic expansion member 1 are hinged to mounting plates 2 via connecting rods 6. The mounting plates 2 are fixedly installed on the outer surfaces of the structures 5 on both sides. A spring 7 for buffering is also provided between the two elastic expansion members 1, and a waterstop strip 3 for water-stopping is fixedly connected between the two mounting plates 2. The protective mechanism 4 is located at the outer opening of the expansion joint and is movably connected to the mounting plates 2.

[0042] In the above description, the elastic expansion member 1 includes two steel plates respectively hinged to opposite ends of two mounting plates 2. The spring 7 is installed between the two steel plates and is made of stainless steel. The mounting plates 2 are fixedly connected to the vertical surfaces of two structures 5 on both sides of the building expansion joint by expansion bolts 21. The connecting rod 6 is symmetrically hinged to the inner side of the mounting plate 2 and hinged to the elastic expansion member 1. The elastic expansion member 1 is also provided with clearance holes 11 for use with the expansion bolts 21.

[0043] In this expansion joint device, the waterstop 3 and the protective mechanism 4 are set up to form an internal environment that is independent of the external environment between the waterstop 3 and the protective mechanism 4, which avoids the erosion of rainwater and prevents the accumulation of particles inside, thus ensuring the safe use of the expansion joint device. At the same time, the buffer mechanism formed by the elastic expansion member 1, the connecting rod 6 and the spring 7 can effectively protect the expansion joint.

[0044] In a preferred embodiment, such as Figure 1 , Figure 2 ,Figure 4 and Figure 5 As shown, the protective mechanism 4 includes a protective baffle 41, with a sliding groove 411 and a locking groove 412 respectively opened on both sides of the bottom of the protective baffle 41; wherein: the sliding groove 411 is located on one side of the protective baffle 41, and a horizontal guide groove 413 communicating with the sliding groove 411 is opened in the sliding groove 411, a positioning strip 42 is slidably arranged in the horizontal guide groove 413, the tail end of the positioning strip 42 is fixedly inserted into the positioning groove 22 on the upper end of the mounting plate 2, and a telescopic sealing strip 43 is integrally formed on the positioning strip 42, the telescopic sealing strip 43 is in close contact with the inner sidewall of the sliding groove 411, and slides along the inner sidewall of the sliding groove 411; the locking groove 412 is located on the side of the protective baffle 41 away from the sliding groove 411, and an anti-detachment component 44 fixedly connected to another mounting plate 2 is locked in the locking groove 412.

[0045] In the above description, the positioning strip 42 extends through the interior of the horizontal guide groove 413 and is slidably connected to the horizontal guide groove 413. This limits the movement trajectory of the protective baffle 41 and prevents the protective baffle 41 from tilting up. Furthermore, the vertical cross-sectional shape of the positioning strip 42 is a side-T shape, and the horizontal guide groove 413 is positioned above the telescopic sealing strip 43, which reduces the sliding resistance of the positioning strip 42 within the horizontal guide groove 413. The telescopic sealing strip 43 is a neoprene rubber component, and its vertical cross-sectional shape is rectangular, which enhances the wear resistance and elasticity of the telescopic sealing strip 43 during use.

[0046] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, an anti-detachment groove 414 communicating with the slot 412 is also provided inside the protective baffle 41; the anti-detachment component 44 includes a sealing strip 441 inserted into the slot 412, and an installation cavity 4411 communicating with the anti-detachment groove 414 is provided on the side end of the sealing strip 441. A locking block 442 that is engaged with the anti-detachment groove 414 is slidably connected inside the installation cavity 4411, and a rubber spring 443 is provided between the locking block 442 and the installation cavity 4411.

[0047] In the above description, the vertical cross-sectional shape of the anti-detachment groove 414 and the locking block 442 at the locking part of the anti-detachment groove 414 is a matching right-angled triangle structure. The inclined surfaces of the anti-detachment groove 414 and the locking block 442 are both facing away from the elastic telescopic member 1. This can save the installer the step of adjusting the locking block 442. Only a pressing operation is needed to firmly lock the protective baffle 41 above the mounting plate 2. One end of the locking block 442 is provided with a locking groove 4421. One end of the rubber spring 443 passes through the locking groove 4421 and is locked and connected with the locking groove 4421. This can improve the tightness of the connection between the locking block 442 and the rubber spring 443, so as to reduce the probability of the rubber spring 443 loosening.

[0048] During use, as the user inserts the sealing strip 441 into the slot 412, the slot 412 contacts the inclined surface of the block 442 in advance and pushes it back into the mounting cavity 4411 to ensure that the sealing strip 441 can properly penetrate the slot 412. When the sealing strip 441 and the slot 412 are connected in place, the mounting cavity 4411 is aligned with the anti-disengagement groove 414. At the same time, the block 442 is no longer obstructed, and the rubber spring 443 quickly pushes the block 442 out of the mounting cavity 4411 and engages it with the slot 412, firmly locking the protective baffle 41 above the mounting plate 2. This can reduce the installation burden on the installer and thus improve the installation efficiency of the expansion joint device.

[0049] The construction process of the building expansion joint device described in this utility model includes:

[0050] After the mounting plate 2 is installed on the vertical surfaces of the two structures 5 on both sides of the building expansion joint by the expansion bolts 21, the installer only needs to insert the bottom of the positioning strip 42 into the positioning groove 22, and then align the anti-detachment component 44 with the slot 412 and snap them together. When the anti-detachment component 44 is installed, the locking block 442 drives the expansion sealing strip 43 to seal the gap formed between the positioning strip 42, the sliding groove 411 and the mounting plate 2. At this time, the entire building expansion joint device is installed.

[0051] When the expansion joint narrows, the protective baffle 41 pulls the expansion sealing strip 43, causing the expansion sealing strip 43 to deform and narrow. This reduces the probability of the expansion sealing strip 43 coming into contact with impurities, thus reducing the probability of friction and wear between the expansion sealing strip 43 and impurities. When the expansion joint widens, the protective baffle 41 pushes the expansion sealing strip 43 back. At this time, the expansion sealing strip 43 increases in thickness under compression, effectively filling the horizontal guide groove 413, and then filling the process gap between the positioning strip 42, the sliding groove 411, and the mounting plate 2. This improves the resistance to particulate matter penetration and rainwater sealing performance, solving the problems of environmental penetration effect, particulate matter accumulation, and freeze-thaw damage in traditional expansion joint protection systems.

[0052] It should be noted that the waterstop 3 mentioned above is a device with relatively mature existing technology. The specific model can be selected according to actual needs, and will not be elaborated here.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A housing expansion joint device installed at an opening of an expansion joint between two structures (5), characterized in that, Include: Elastic expansion piece (1), the outer side of the elastic expansion piece (1) is hingedly connected with mounting plate (2) through connecting rod (6), the mounting plate (2) is installed on the outer surface of structure (5), spring (7) is also arranged between the two elastic expansion pieces (1), and water stop belt (3) is also arranged between the two mounting plates (2); The protection mechanism (4) is arranged at the outer opening of the expansion joint, and is movably connected with the mounting plate (2), and includes a protection baffle (41), and the bottom of the protection baffle (41) is provided with a sliding groove (411) and a clamping groove (412).

2. The building expansion joint device of claim 1, wherein: The sliding groove (411) is located on one side of the protection baffle (41), and a horizontal guide groove (413) is formed in the sliding groove (411) and is in communication with the sliding groove (411), the horizontal guide groove (413) is slidably arranged with a positioning strip (42), and the positioning strip (42) is fixedly arranged in the positioning groove (22) on the upper end of the mounting plate (2).

3. The building expansion joint device of claim 2, wherein: The positioning strip (42) is also provided with an elastic sealing strip (43), which is in contact with the inner side wall of the sliding groove (411) and slides along the inner side wall of the sliding groove (411).

4. The building expansion joint device of claim 2, wherein: The positioning strip (42) penetrates into the horizontal guide groove (413) and is slidably connected with the horizontal guide groove (413).

5. The building expansion joint device of claim 2, wherein: The vertical sectional shape of the positioning strip (42) is T-shaped, and the horizontal guide groove (413) is arranged above the elastic sealing strip (43).

6. The building expansion joint device of claim 1, wherein: The clamping groove (412) is located on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411).

7. The building expansion joint device of claim 6, wherein: The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411).

8. The building expansion joint device of claim 7, wherein: The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411).

9. The building expansion joint device of claim 7, wherein: The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411).

10. The building expansion joint device of claim 7, wherein: The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411). The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411). The clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411), and the clamping groove (412) is arranged on the side of the protection baffle (41) away from the sliding groove (411). 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