Embedded floor expansion joint device

Abstract

The invention discloses a pre-buried floor expansion joint device, which relates to the technical field of building accessories and comprises a partition plate with an opening and a force transmission plate pin inserted into the opening, and one end of the force transmission plate pin is sleeved with a plate pin sleeve. A positioning expansion assembly is arranged between the force transmission plate pin and the plate pin sleeve. In the process of sleeving the plate pin sleeve, the plate pin sleeve pushes the positioning part through the limiting end to press the pushing and pressing head, so that the pushing and pressing head pushes the honeycomb elastic unit in the expansion part to outwards push the elastic film to be expanded, sealing is formed between the force transmission plate pin and the plate pin sleeve, and the sealing is used for blocking external impurities; in addition, the same allowance is reserved between the force transmission plate pin and the plate pin sleeve in the circumferential direction, the allowance can enable the force transmission plate pin to deviate smoothly, and the situation that the force transmission plate pin and the plate pin sleeve pulled by the partition plate are difficult to stretch out and draw back, and consequently tiny cracks are generated on concrete is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of building accessories, and in particular to a pre-buried floor expansion joint device. Background Art

[0002] Floor expansion joints need to be installed during floor pouring to reduce the risk of cracking during concrete setting and shrinkage and thermal expansion and contraction during future use. The floor expansion joint device includes angle steel and partition plates. The partition plates are arranged under the angle steels, and the force transmission plate pins are inserted into the rectangular openings of the partition plates in turn, and the plate pin sleeve is put on one end of the partition plates.

[0003] Before pouring the concrete floor, place the floor expansion joint device at the predetermined position, and then start pouring concrete to bury the force transfer plate pin and the plate pin sleeve. When the concrete on both sides of the floor expansion joint device has finally set and shrunk, the force generated by the shrinkage will pull the edge angle steel of the floor expansion joint device apart by a certain distance to form a crack. The crack will extend downward to the bottom of the concrete layer, completing the automatic opening of the floor expansion joint.

[0004] As concrete shrinks, there is room for movement between the force transmission plate pins and the plate pin sleeves buried in the concrete, which can be used for displacement due to thermal expansion and contraction of the concrete.

[0005] At present, the floor expansion joint device has the following defects:

[0006] The partition is usually more than three meters long, and there are usually four force transfer pins fixed vertically to the partition. In actual applications, the force transfer pin is inserted into the circumferential wall of the plate pin sleeve and fits the inner wall of the plate pin sleeve. However, the partition may be bent due to transportation or being pressed by people or objects on the construction site, which affects the verticality of the force transfer pin. As a result, when the force transfer pin and the plate pin sleeve perform telescopic movement, the force transfer pin will exert skew pressure on the plate pin sleeve, causing tiny cracks in the concrete. Summary of the invention

[0007] The purpose of the present invention is to solve the problem that when the bending of the partition plate of the floor expansion joint device in the prior art affects the verticality of the force transfer plate pin, during the expansion and contraction process of the force transfer plate pin and the plate pin sleeve, the force transfer plate pin exerts a deflection pressure on the plate pin sleeve, thereby causing tiny cracks in the concrete.

[0008] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pre-buried floor expansion joint device, comprising: a partition plate with an opening and a force transmission plate pin inserted into the opening, one end of the force transmission plate pin being sleeved with a plate pin sleeve.

[0009] The insertion groove of the force transmission plate pin is configured with a positioning expansion component, and the positioning expansion component is blocked by a limiting end configured on the inner side of the plate pin sleeve.

[0010] The positioning and expanding assembly includes a positioning part, an expanding part and a pressing head. The positioning part abuts against the pressing head, and the pressing head is telescopically connected to the expanding part. The expanding part is filled with honeycomb elastic units, and an elastic film is arranged on the expanding part to cover the parts of the honeycomb elastic units exposed outside the expanding part.

[0011] An air release screw is arranged on the expanding part, and the air release channel provided with the air release screw is used to discharge the air in the area of the honeycomb elastic units.

[0012] An inclined groove is arranged in the air release channel, and a sealing ball is slidably and sealingly installed in the inclined groove. The sealing ball is larger than the caliber of the air release channel and seals the air release channel. When the air release channel releases air, the air pressure pushes the sealing ball under the inclined groove to slide obliquely upward to open the air release channel.

[0013] Before concrete pouring, force transfer pin plates are sequentially inserted into the openings of the long strip-shaped partition plates, and a pin plate sleeve is sleeved on one end of each force transfer pin plate. During this process, the pin plate sleeve pushes the positioning part through the limiting end to press the pressing head, so that the pressing head pushes the honeycomb elastic units in the expanding part to push the elastic film outwards to expand, not only forming a margin between the circumferences of the force transfer pin plates and the pin plate sleeves, but also forming a seal between the force transfer pin plates and the pin plate sleeves. At the same time, the squeezed honeycomb elastic units are deflated through the air release screw.

[0014] The gas passes through the air release channel of the air release screw, pushing the sealing ball under the inclined groove to slide obliquely upward to open the air release channel for air release.

[0015] When starting to pour concrete, pour the concrete on both sides of the partition plate to bury the force transfer pin plates and the pin plate sleeves. After the concrete on both sides of the floor expansion joint device has finally set and shrunk, the force generated by the shrinkage will pull the floor expansion joint device apart, causing it to separate by a certain distance to form a crack, and this crack will extend downward until the bottom of the concrete layer, that is, the automatic opening of the floor expansion joint is completed.

[0016] The beneficial effects of the present invention are as follows:

[0017] First, a pin plate sleeve is sleeved on the force transfer pin plate. The pin plate sleeve pushes the positioning part through the limiting end to press the pressing head to move, so that the expanding part expands and contacts the pin plate sleeve, ensuring that the same margin is reserved between the circumferences of each set of force transfer pin plates and the pin plate sleeves. That is to say, when the bending of the partition plate affects the perpendicularity of the force transfer pin plates, this margin can enable the force transfer pin plates to deflect smoothly, preventing the force transfer pin plates and the pin plate sleeves pulled by the partition plate from being difficult to expand and contract, and thus preventing the concrete from generating tiny cracks.

[0018] Second, after the floor expansion joint is opened, the seal formed by the positioning and expanding assembly between the force transfer pin plates and the pin plate sleeves is used to block external impurities, preventing the force transfer pin plates and the pin plate sleeves from being difficult to expand and contract, and thus preventing the concrete from generating tiny cracks.

[0019] Thirdly, by expanding the expansion part through extrusion to form a seal, it can meet the requirements of different clearances between the force transmission plate pin and the plate pin sleeve.

[0020] Fourthly, when the force transmission plate pin is not sleeved with the plate pin sleeve, the positioning and expansion assembly does not expand under force, and the force transmission plate pin can be quickly and simply sleeved with the plate pin sleeve, improving the assembly efficiency.

[0021] There are a large number of expansion joints on the floor, and each expansion joint has at least three sets of force transmission plate pins and plate pin sleeves. Therefore, quickly completing the assembly of the force transmission plate pins and plate pin sleeves can complete the decoration of the floor faster.

[0022] Fifthly, gas passes through the air release channel of the air release screw, pushing the sealing ball under the inclined groove to slide obliquely upward to open the air release channel for air release. When the force transmission plate pin is separated from the plate pin sleeve, since the outside gas cannot enter the expansion part, the expanded honeycomb elastic unit is not easily reset and can maintain the sealed state.

[0023] Furthermore, in the embodiment of the present invention, a telescopic guide rod is arranged between the positioning part and the expansion part, and the telescopic guide rod penetrates through the pressing head.

[0024] Furthermore, in the embodiment of the present invention, the pre-buried floor expansion joint device further includes two angle steels. The angle steels are correspondingly provided with bolt holes, and their tops are tightly attached flush with each other and are connected by fasteners passing through the bolt holes. The upper end of the partition plate is fixed under one of the angle steels.

[0025] Even further, in the embodiment of the present invention, the fastener is composed of a plastic bolt and a metal nut.

[0026] Even further, in the embodiment of the present invention, the force transmission plate pin is made of Q345B steel and is welded and fixed at the opening of the partition plate, and the plate pin sleeve is made of ABS or HDPS.

[0027] Even further, in the embodiment of the present invention, shear-resistant bars are welded at intervals on both sides of the angle steel, and the shear-resistant bars are made of Q235 steel.

[0028] Even further, in the embodiment of the present invention, the angle steel and the partition plate are of a wavy structure. The contact area of the wavy shape with the tire is very small, which can reduce the bumps when the vehicle passes. The steel angle steel can protect the concrete below from being crushed, and there is room for movement between the force transmission plate pin and the plate pin sleeve, which can be used for the displacement during the thermal expansion and contraction of the concrete.

[0029] Even further, in the embodiment of the present invention, the shear-resistant bars are welded at intervals at the wave crests of the angle steel.

[0030] Further, in the embodiment of the present invention, the long hole opened at the lower end of the partition plate and the fixing hole opened on the extension plate arranged below the partition plate are connected through a fixing member passing through them.

[0031] Whenever the thickness of the concrete placement is changed, partition plates of different lengths need to be replaced, so a lot of non-standard sized partition plates will be produced. To adapt to the thickness of the concrete placement and reduce the production of non-standard sized partition plates. By providing an extension plate below the partition plate, when adjusting the height of the extension plate, the fixing hole of the extension plate moves up and down and coincides with the long hole opened at the lower end of the partition plate, so that after the height of the extension plate is adjusted, it can be connected through a fixing member.

[0032] Furthermore, in the embodiment of the present invention, the fixing member is composed of a metal bolt and a wing nut. Description of the Drawings

[0033] Figure 1 Front schematic view of the floor expansion joint device embedded in the embodiment of the present invention.

[0034] Figure 2 Top schematic view of the floor expansion joint device embedded in the embodiment of the present invention.

[0035] Figure 3 Side structural schematic view of the floor expansion joint device embedded in the embodiment of the present invention.

[0036] Figure 4 Partial structural schematic view of the floor expansion joint device embedded in the embodiment of the present invention.

[0037] Figure 5 Schematic view of the air release screw in the embodiment of the present invention.

[0038] 10. Partition plate, 11. Force transfer pin, 11.1 Insertion slot, 12. Pin sleeve, 12.1 Limiting end, 13. Angle steel at corner, 14. Fastening member, 15. Shear-resistant bar, 16. Extension plate, 17. Fixing member;

[0039] 20. Positioning expansion assembly, 21. Positioning part, 22. Expansion part, 23. Pushing head, 24. Honeycomb elastic unit, 25. Elastic membrane, 26. Telescopic guide rod;

[0040] 30. Air release screw, 31. Air release channel, 32. Inclined slot, 33. Sealing ball. Detailed Embodiments

[0041] In order to clearly and completely describe the objectives and technical solutions of the present invention, and make its advantages more clearly understood, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, and are merely used to explain the embodiments of the present invention, rather than limiting the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0044] For the purposes of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known structures are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0045] Embodiment 1:

[0046] It should be noted first that, as part of the specification, the structural shapes, connection relationships, mating relationships, and positional relationships that can be undoubtedly obtained from the specification drawings should be understood as the content of the specification.

[0047] An embedded floor expansion joint device, as Figures 1 - 3As shown in the figure, it includes a partition plate 10 with an opening and a force transmission plate pin 11 inserted into the opening. One end of the force transmission plate pin 11 is sleeved with a plate pin sleeve 12.

[0048] As Figure 4 shown in the figure, a positioning and expansion assembly 20 is arranged in the insertion slot 11.1 of the force transmission plate pin 11, and the positioning and expansion assembly 20 is blocked by a limiting end 12.1 arranged inside the plate pin sleeve 12.

[0049] The positioning and expansion assembly 20 includes a positioning part 21, an expansion part 22 and a push head 23. The positioning part 21 abuts against the push head 23. The push head 23 is telescopically connected to the expansion part 22. The expansion part 22 is filled with a honeycomb elastic unit 24. An elastic membrane 255 is arranged on the expansion part 22 to cover the part of the honeycomb elastic unit 24 exposed outside the expansion part 22.

[0050] As Figure 4 、 Figure 5 shown in the figure, an air release screw 30 is arranged on the expansion part 22. The air release channel 31 arranged on the air release screw 30 is used to discharge the air in the area of the honeycomb elastic unit 24.

[0051] An inclined slot 32 is arranged in the air release channel 31. A sealing ball 33 is slidably and sealingly installed in the inclined slot 32. The sealing ball 33 is larger than the caliber of the air release channel 31 and seals the air release channel 31. When the air release channel 31 releases air, the air pressure pushes the sealing ball 33 under the inclined slot 32 to slide obliquely upward to open the air release channel 31.

[0052] Specific implementation: Before concrete pouring, the force transmission plate pins 11 are sequentially inserted into the openings of the long strip-shaped partition plate 10, and a plate pin sleeve 12 is sleeved on one end thereof. During this process, the plate pin sleeve 12 pushes the positioning part 21 through the limiting end 12.1 to press the push head 23, so that the push head 23 pushes the honeycomb elastic unit 24 in the expansion part 22 to push the elastic membrane 255 to expand outward. This not only forms a margin between the circumferences of the force transmission plate pin 11 and the plate pin sleeve 12, but also forms a seal between the force transmission plate pin 11 and the plate pin sleeve 12. At the same time, the squeezed honeycomb elastic unit 24 is subjected to air release treatment through the air release screw 30.

[0053] The gas passes through the air release channel 31 of the air release screw 30, and pushes the sealing ball 33 under the inclined slot 32 to slide obliquely upward to open the air release channel 31 for air release.

[0054] When starting to pour concrete, pour the concrete on both sides of the partition plate 10 to bury the force transmission plate pin 11 and the plate pin sleeve 12. After the concrete on both sides of the floor expansion joint device has finally set and shrunk, the force generated by the shrinkage will pull the floor expansion joint device to separate it by a certain distance to form a crack, and the crack will extend downward until the bottom of the concrete layer, that is, the automatic opening of the floor expansion joint is completed.

[0055] One of the advantages of the present invention is that the force transmission plate pin 11 is sleeved with the plate pin sleeve 12. The plate pin sleeve 12 pushes the positioning portion 21 through the limiting end 12.1 to press the pressing head 23 to move, so that the expansion portion 22 expands to contact the plate pin sleeve 12, ensuring that the same margin is reserved circumferentially between each set of the force transmission plate pin 11 and the plate pin sleeve 12. That is to say, when the bending of the partition plate 10 affects the perpendicularity of the force transmission plate pin 11, this margin enables the force transmission plate pin 11 to be displaced smoothly, preventing the force transmission plate pin 11 and the plate pin sleeve 12 pulled by the partition plate 10 from being difficult to expand and contract, and thus preventing the concrete from generating micro-cracks.

[0056] Another advantage of the present invention is that after the floor expansion joint is slit, the seal formed by the positioning and expansion assembly 20 between the force transmission plate pin 11 and the plate pin sleeve 12 blocks external impurities, preventing the force transmission plate pin 11 and the plate pin sleeve 12 from being difficult to expand and contract, and thus preventing the concrete from generating micro-cracks.

[0057] A third advantage of the present invention is that by squeezing the expansion of the expansion portion 22 to form a seal, it can meet the requirements of different margins between the force transmission plate pin 11 and the plate pin sleeve 12.

[0058] A fourth advantage of the present invention is that when the force transmission plate pin 11 is not sleeved with the plate pin sleeve 12, the positioning and expansion assembly 20 expands without being stressed, enabling the force transmission plate pin 11 to be quickly and simply sleeved with the plate pin sleeve 12, improving the assembly efficiency.

[0059] There are a large number of expansion joints on the floor, and each expansion joint has at least three sets of force transmission plate pins 11 and plate pin sleeves 12. Therefore, quickly completing the assembly of the force transmission plate pins 11 and the plate pin sleeves 12 can complete the floor decoration faster.

[0060] A fifth advantage of the present invention is that the gas passes through the air release channel 31 of the air release screw 30, pushing the sealing ball 33 under the inclined groove 32 to slide obliquely upward to open the air release channel 31 for air release. When the force transmission plate pin 11 is separated from the plate pin sleeve 12, since the external gas cannot enter the expansion portion 22, the expanded honeycomb elastic unit 24 is not easily reset and can maintain the sealed state.

[0061] Specifically, a telescopic guide rod 26 is provided between the positioning portion 21 and the expansion portion 22, and the telescopic guide rod 26 penetrates through the pressing head 23.

[0062] Specifically, the pre-embedded floor expansion joint device further includes two angle steels 13. The angle steels 13 are correspondingly provided with bolt holes. Their tops are closely attached and level with each other and are connected by fasteners 14 passing through the bolt holes. The upper end of the partition plate 10 is fixed under one of the angle steels 13.

[0063] More specifically, the fastener 14 is composed of a plastic bolt and a metal nut. When the concrete slit pulls the two angle steels 13, the plastic fastener 14 can be easily pulled apart.

[0064] More specifically, the material of the force - transmitting plate pin 11 is Q345B steel, which is welded and fixed at the opening of the partition plate 10, and the material of the plate pin sleeve 12 is ABS or HDPS.

[0065] More specifically, shear - resisting ribs 15 are welded to the two side surfaces of the angle steel 13 at intervals, and the material of the shear - resisting rib 15 is Q235 steel.

[0066] More specifically, the angle steel 13 and the partition plate 10 are of a wavy structure. The contact area of the wavy shape with the tire is very small, which can reduce the bump when the vehicle passes. The steel angle steel 13 can protect the concrete below from being crushed, and there is room for movement between the force - transmitting plate pin 11 and the plate pin sleeve 12, which can be used for the displacement during the thermal expansion and contraction of the concrete.

[0067] More specifically, the shear - resisting ribs 15 are welded to the wave crests of the angle steel 13 at intervals.

[0068] Specifically, the long - strip hole opened at the lower end of the partition plate 10 and the fixing hole opened on the extension plate 16 arranged below the partition plate 10 are connected by passing through a fixing member 17.

[0069] The sixth advantage of the present invention is that whenever the thickness of the concrete pouring is changed, partition plates 10 of different lengths need to be replaced, so a lot of non - standard - sized partition plates 10 will be produced. To adapt to the thickness of the concrete pouring and reduce the production of non - standard - sized partition plates 10. By providing an extension plate 16 under the partition plate 10, when adjusting the height of the extension plate 16, the fixing hole of the extension plate 16 moves up and down and coincides with the long - strip hole opened at the lower end of the partition plate 10, so that after the height of the extension plate 16 is adjusted, it can be connected by the fixing member 17.

[0070] More specifically, the fixing member 17 is composed of a metal bolt and a wing nut.

[0071] Although the above - described illustrative specific embodiments of the present invention have been described to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, all inventions created using the concept of the present invention are within the scope of protection.

Claims

1. A pre-buried floor expansion joint device, comprising: a partition plate with an opening and a force transmission plate pin plugged into the opening, one end of the force transmission plate pin being sleeved with a plate pin sleeve; It is characterized in that The insertion groove of the force transmission plate pin is provided with a positioning expansion component, and the positioning expansion component is blocked by a limiting end provided on the inner side of the plate pin sleeve; The positioning expansion assembly comprises a positioning portion, an expansion portion and a pushing head, wherein the positioning portion abuts against the pushing head, the pushing head is telescopically connected to the expansion portion, the expansion portion is filled with a honeycomb elastic unit, and the expansion portion is provided with an elastic film covering a portion of the honeycomb elastic unit exposed outside the expansion portion; The expansion part is provided with an air release screw, and the air release channel provided with the air release screw is used to discharge the air in the honeycomb elastic unit area; An inclined groove is provided in the degassing channel, in which a sealing ball is installed for sliding sealing. The sealing ball is larger than the diameter of the degassing channel and seals the degassing channel. When the degassing channel is deflated, the air pressure pushes the sealing ball under the inclined groove to slide obliquely upward to open the degassing channel.

2. The embedded floor expansion joint device according to claim 1 is characterized in that: A telescopic guide rod is arranged between the positioning portion and the expansion portion, and the telescopic guide rod penetrates the pushing head.

3. The embedded floor expansion joint device according to claim 1 is characterized in that: The embedded floor expansion joint device also has two edge angle steels, which have corresponding bolt holes. The top ends of the two steels are kept flush and tightly attached and connected by fasteners passing through the bolt holes. The upper end of the partition plate is fixed under one of the edge angle steels.

4. The embedded floor expansion joint device according to claim 3 is characterized in that: The fastener consists of a plastic bolt and a metal nut.

5. The embedded floor expansion joint device according to claim 3 is characterized in that: The material of the force transmission plate pin is Q345B steel, and it is welded and fixed to the opening of the partition plate. The material of the plate pin sleeve is ABS or HDPS.

6. The embedded floor expansion joint device according to claim 3 is characterized in that: Shear reinforcements are welded at intervals on both sides of the angle steel, and the material of the shear reinforcements is Q235 steel.

7. The embedded floor expansion joint device according to claim 6 is characterized in that: The edge angle steel and the partition plate are of a wave-shaped structure.

8. The embedded floor expansion joint device according to claim 7 is characterized in that: The shear reinforcements are welded at intervals at the wave crests of the edge angle steels.

9. The embedded floor expansion joint device according to claim 1, characterized in that: The long strip hole opened at the lower end of the partition plate and the fixing hole opened in the extension plate arranged under the partition plate are connected through the fixing piece.

10. The embedded floor expansion joint device according to claim 9, characterized in that: The fixing piece is composed of a metal bolt and a butterfly nut.

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