Anti-seismic prefabricated stair combined connecting device

Abstract

The invention relates to the technical field of stair connecting devices, in particular to an anti-seismic prefabricated stair combined connecting device which comprises a base and a stair, a connecting component is arranged between the base and the stair and comprises a first connecting plate and a second connecting plate, the first connecting plate is located at the bottom of the stair and fixedly connected with the stair, and the second connecting plate is located at the bottom of the stair. A groove is formed in the base, the second connecting plate is fixed to the bottom of the groove, a buffering assembly is arranged between the first connecting plate and the second connecting plate and comprises a first rubber support and a second rubber support which are fixed between the first connecting plate and the second connecting plate, and a protruding part is arranged at the top of the first rubber support. A sunken part is arranged at the bottom of the staircase, and the protruding part is inserted into the sunken part and fixed to the staircase. The stair has the technical effect of reducing shaking of the stair during an earthquake.

Description

Technical Field

[0001] The present invention relates to the technical field of staircase connecting devices, and in particular to an earthquake-resistant prefabricated staircase assembly connecting device. Background Art

[0002] The stair connection device is a key component used to firmly connect the stair section to the building structure (such as floor slabs, beams, walls, etc.), ensuring the stability, safety and integrity of the stairs. The stair connection device is a key component to ensure the safety and stability of the stairs. The design needs to comprehensively consider the load-bearing capacity, seismic performance, durability and construction convenience. By optimizing the design and selecting the appropriate mechanical structure, the stability and safety of the stair connection device can be effectively improved.

[0003] Prefabricated staircase assembly connection devices are generally installed by connecting the building structure to the stairs through cement pouring or bolts, but when an earthquake occurs, the stairs shake too violently. Summary of the Invention

[0004] In order to solve the problems existing in the above-mentioned prior art, the present invention provides a seismic-resistant prefabricated stair combination connection device that reduces the shaking of stairs during earthquakes. The present invention provides a seismic-resistant prefabricated staircase assembly connection device, which adopts the following technical solutions: A seismic-resistant prefabricated stair combination connection device includes a base and a stair, a connecting member is provided between the base and the stair, the connecting member includes a first connecting plate and a second connecting plate, the first connecting plate is located at the bottom of the stair and is fixedly connected to the stair, a groove is provided on the base, the second connecting plate is fixed to the bottom of the groove, a buffer assembly is provided between the first connecting plate and the second connecting plate, the buffer assembly includes a first rubber support and a second rubber support fixed between the first connecting plate and the second connecting plate, a protrusion is provided on the top of the first rubber support, a recess is provided at the bottom of the stair, the protrusion is inserted into the recess, and the protrusion is fixed to the stair.

[0005] Optionally, a rubber frame plate is provided between the first rubber bearing and the second rubber bearing, a plurality of lead rubber bearings are fixed inside the rubber frame plate, the plurality of lead rubber bearings are evenly distributed inside the rubber frame plate, the lead rubber bearings are fixed between the first connecting plate and the second connecting plate, and a hydraulic shock-absorbing assembly is provided between two adjacent lead rubber bearings to reduce the intensity of stair shaking during an earthquake.

[0006] Optionally, the hydraulic shock absorber assembly includes a support seat and a bladder. The support seat is fixed between two adjacent lead rubber supports. The bladder is provided on both sides of the support seat and is fixed between the support seat and the rubber frame plate. A baffle is integrally formed at the bottom of the stairs. The baffle is located on the side of the second rubber support away from the first rubber support. A liquid storage tank is fixed to the outside of the baffle. A liquid conduit is connected to the outside of the liquid storage tank. A first liquid conduit hole is provided on the first rubber support, and the first liquid conduit hole is connected to the bladder. A second liquid conduit hole is provided on the support seat, and the two bladders are connected through the second liquid conduit hole. A third liquid conduit hole is provided on the second rubber support, and the third liquid conduit hole passes through the rubber frame plate and the baffle and is connected to the liquid storage tank. The first liquid conduit hole is connected to the liquid conduit 54 on the side away from the bladder.

[0007] Optionally, a restoration component for restoring the sac is provided inside the liquid storage tank. The restoration component includes a piston plate, a movable rod and a spring. The piston plate is slidably connected inside the liquid storage tank. The movable rod is fixed on one side of the piston plate. The movable rod passes through the side wall of the liquid storage tank. The spring is sleeved on the movable rod and fixed between the piston plate and the inner wall of the liquid storage tank.

[0008] Optionally, a gas replenishing component for inflating the bladder is provided on each support seat.

[0009] Optionally, the gas replenishment assembly includes a storage box, which is fixedly connected to the top of the support base. A discharge device for discharging and generating high temperature is fixedly connected to the outer wall of the storage box. A wire is electrically connected to one side of the discharge device. Sodium azide solid is provided inside the storage box. The sodium azide solid is sleeved on the wire. An air inlet is opened on the inner wall of the support base. The air inlet is connected to the capsule. A one-way valve is installed on the inner wall of the air inlet. An extrusion block for squeezing the discharge device switch after moving is fixedly connected to the inner wall of the rubber frame plate.

[0010] Optionally, the end area of ​​the extrusion block is larger than the end area of ​​the discharge device switch.

[0011] Compared with the prior art, the present invention has the following technical effects: 1. During an earthquake, the stairs will push the first and second rubber supports to deform and provide cushioning. Furthermore, the first and second rubber supports will squeeze the rubber frame plate and the bladder, causing the bladder to deform. The liquid inside the bladder will flow into the liquid storage tank through the liquid guide tube. The recovery component in the liquid storage tank can reduce the flow rate of the liquid in the liquid guide tube, thereby reducing the deformation speed of the bladder and the shaking intensity between the stairs and the building structure. The recovery component can restore the bladder to its original shape. 2. When the earthquake intensity is too large, the deformation and shaking amplitude of the first rubber bearing and the second rubber bearing will increase, the extrusion block will squeeze the switch on the discharge device, and the discharge device will discharge through the wire. The high temperature generated by the discharge will cause the sodium azide solid to react and produce a large amount of nitrogen. The nitrogen will be discharged into the bag through the air inlet. When the shaking amplitude is too large, it will accelerate the restoration of the bag after being squeezed and reduce the deformation speed of the bag, thereby improving the support strength between the stairs and the building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the buffer assembly of the present invention; Figure 3 Schematic diagram of the rubber frame plate of the present invention; Figure 4 is a schematic diagram of the lead rubber bearing and the hydraulic shock absorbing assembly of the present invention; Figure 5 is a schematic diagram of the discharge assembly of the present invention; Figure 6 Schematic diagram of the recovery component of the present invention.

[0013] Explanation of the accompanying drawings: 1. base; 11. second connecting plate; 12. groove; 2. stairs; 21. first connecting plate; 22. recessed portion; 23. baffle; 3. buffer assembly; 31. first rubber support; 311. protrusion; 32. second rubber support; 4. rubber frame plate; 41. lead rubber support; 5. hydraulic shock absorber assembly; 51. support seat; 52. sac; 53. liquid storage tank; 54. liquid guide tube; 55. first liquid guide hole; 56. second liquid guide hole; 57. third liquid guide hole; 6. recovery assembly; 61. piston plate; 62. movable rod; 63. spring; 7. gas replenishing assembly; 71. storage box; 72. discharge device; 73. wire; 74. sodium azide solid; 75. air inlet; 76. one-way valve; 77. extrusion block. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1 -Attached Figure 6 The present invention is described in further detail.

[0015] Reference Figures 1-6 The present invention discloses a seismic-resistant prefabricated staircase assembly connection device, comprising a base 1, a staircase 2, and a connecting member. The staircase 2 is mounted on the base 1 via the connecting member. The connecting member includes a first connecting plate 21 and a second connecting plate 11. The first connecting plate 21 is located at the bottom of the staircase 2 and is fixedly connected to the staircase 2. The base 1 is provided with a groove 12, and the second connecting plate 11 is fixed to the bottom of the groove 12.

[0016] The bottom of staircase 2 is located above recess 12. A buffer assembly 3 is installed between the first connecting plate 21 and the second connecting plate 11. This assembly is used to increase damping, thereby reducing the intensity of staircase 2's shaking during earthquakes. The buffer assembly 3 includes a first rubber support 31 and a second rubber support 32. The top of the first rubber support 31 is provided with a protrusion 311. The bottom of staircase 2 is provided with a recess 22, into which the protrusion 311 is inserted. The protrusion 311 is secured to the staircase 2 with bolts.

[0017] The first rubber support 31 and the second rubber support 32 are both bolted between the first connecting plate 21 and the second connecting plate 11. A rubber frame plate 4 is fixed between the first rubber support 31 and the second rubber support 32. A plurality of lead rubber supports 41 are fixed inside the rubber frame plate 4. The plurality of lead rubber supports 41 are evenly distributed inside the rubber frame plate 4 and are fixed to the inner wall of the rubber frame plate 4.

[0018] The top of the lead rubber bearing 41 is fixedly connected to the first connecting plate 21 via bolts, and the bottom of the lead rubber bearing 41 is fixedly connected to the second connecting plate 11 via bolts. A hydraulic shock-absorbing assembly 5 is disposed between two adjacent lead rubber bearings 41 to reduce the shaking intensity of the staircase 2 during an earthquake. The hydraulic shock-absorbing assembly 5 includes a support seat 51, which is fixed between the two lead rubber bearings 41. A capsule 52 is fixed to each side of the support seat 51. The side of the capsule 52 away from the support seat 51 is fixed to the rubber frame plate 4.

[0019] The bottom of the staircase 2 is integrally formed with a baffle 23, located on the side of the second rubber support 32 away from the first rubber support 31. A liquid reservoir 53 is fixed to the outside of the baffle 23, and a liquid conduit 54 is connected to the outside of the liquid reservoir 53. A first liquid conduit hole 55 is defined in the first rubber support 31, communicating with the bladder 52. A second liquid conduit hole 56 is defined in the support base 51, connecting the two bladders 52. A third liquid conduit hole 57 is defined in the second rubber support 32, passing through the rubber frame plate 4 and the baffle 23 and communicating with the liquid reservoir 53. The side of the first liquid conduit hole 55 away from the bladder 52 is connected to the liquid conduit 54.

[0020] The liquid in the liquid storage tank 53 passes through the liquid guide tube 54, the first liquid guide hole 55, the first bladder 52, the second liquid guide hole 56, the second bladder 52, the third liquid guide hole 57, and finally reaches the liquid storage tank 53, thus forming a closed loop. The liquid storage tank 53 is provided with a recovery assembly 6 for recovering the bladder 52. The recovery assembly 6 includes a piston plate 61, a movable rod 62, and a spring 63. The piston plate 61 is slidably connected to the inside of the liquid storage tank 53, and the movable rod 62 is fixed to one side of the piston plate 61. The movable rod 62 passes through the side wall of the liquid storage tank 53. The spring 63 is sleeved on the movable rod 62 and fixed between the piston plate 61 and the inner wall of the liquid storage tank 53.

[0021] The bladder 52 is made of rubber and is used to store liquid. It can automatically reset itself after deformation. During a minor earthquake, the bladder 52 is squeezed, and the liquid inside it flows into the liquid storage tank 53 through the liquid guide tube 54 or the third liquid guide hole 57. The piston plate 61 moves to the right, thereby compressing the spring 63 and pushing the movable rod 62 outward. When the earthquake stops, the spring 63 acts to force some of the liquid in the liquid storage tank 53 into the bladder 52, returning the bladder 52 to its original shape. Staff can gauge the approximate intensity of the earthquake by the distance the movable rod 62 is moved out of the liquid storage tank 53. The further the movable rod 62 is moved out, the greater the earthquake's intensity.

[0022] A gas replenishment assembly 7 is provided on each support base 51. The gas replenishment assembly 7 includes a storage box 71, which is fixedly connected to the top of the support base 51. A discharge device 72 for discharging and generating high temperature is fixedly connected to the outer wall of the storage box 71. One side of the discharge device 72 is electrically connected to a wire 73. A sodium azide solid 74 is provided inside the storage box 71. The sodium azide solid 74 is sleeved on the wire 73. An air inlet 75 is opened on the inner wall of the support base 51. The air inlet 75 is connected to the capsule 52. A one-way valve 76 is installed on the inner wall of the air inlet 75. The one-way valve 76 prevents the liquid in the capsule 52 from flowing into the storage box 71 through the air inlet 75, but allows the gas in the storage box 71 to flow into the capsule 52 through the air inlet 75. An extrusion block 77 for squeezing the switch of the discharge device 72 after moving is fixedly connected to the inner wall of the rubber frame plate 4. The extrusion block 77 is arranged on one side of the switch of the discharge device 72, and the end area of ​​the extrusion block 77 is larger than the end area of ​​the switch of the discharge device 72. When the earthquake intensity is too large, the first rubber support 31 and the second rubber support 32 will shake too much. The first rubber support 31 and the second rubber support 32 will squeeze the rubber frame plate 4 to a greater extent. The squeezing block 77 on the rubber frame plate 4 will squeeze the switch of the discharge device 72. The discharge device 72 will generate high temperature through the guide. The high temperature on the wire 73 will cause the sodium azide solid 74 to react, and the sodium azide solid 74 will generate a large amount of nitrogen. Since the storage box 71 is sealed, the nitrogen will enter the interior of the bag 52 through the air inlet 75. This prevents the staircase 2 from shaking back and forth when the earthquake intensity is too large, causing the bag 52 to be unable to return to its original position in time after deformation. After the nitrogen enters the bag 52, it can restore the bag 52 in time. The nitrogen can also reduce the deformation speed of the bag 52, thereby improving the support strength between the staircase 2 and the building structure.

[0023] The implementation principle of the earthquake-resistant prefabricated stair combination connection device of the present invention is: when installing the prefabricated stair 2, first install the base 1 inside the stair 2, then install the connecting member on the top of the base 1, and finally install the stair 2 on the connecting member.

[0024] When an earthquake occurs, the first rubber support 31, the second rubber support 32, the rubber frame plate 4 and the lead rubber support 41 will all be deformed. When the first rubber support 31 and the second rubber support 32 rock back and forth, they will squeeze the capsule 52 in the rubber frame plate 4. The liquid in the capsule 52 will flow into the liquid outlet tank through the liquid guide tube 54 or the third liquid guide hole 57. When the earthquake level is relatively small, the liquid in the liquid storage tank 53 will quickly return to the capsule 52. Under the joint action of the first rubber support 31, the second rubber support 32 and the capsule 52, the rocking intensity of the stair 2 during an earthquake is reduced.

[0025] When the earthquake intensity is large, the first rubber support 31 and the second rubber support 32 will shake greatly, and the capsule 52 will not be able to recover in time. The squeezing block 77 will squeeze the switch of the discharge device 72, and the discharge device 72 will discharge through the wire 73 to generate high temperature. The high temperature on the wire 73 will cause the sodium azide solid 74 to react, and the sodium azide solid will produce a large amount of nitrogen. The nitrogen will enter the interior of the capsule 52 through the air inlet 75. This prevents the staircase 2 from shaking back and forth when the earthquake intensity is too large, causing the capsule 52 to be unable to recover in time after deformation, thereby improving the supporting strength between the staircase 2 and the building structure.

[0026] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A seismic-resistant prefabricated staircase assembly connection device, comprising a base (1) and a staircase (2), characterized in that: A connecting member is provided between the base (1) and the staircase (2), the connecting member comprising a first connecting plate (21) and a second connecting plate (11), the first connecting plate (21) being located at the bottom of the staircase (2) and fixedly connected to the staircase (2), a groove (12) being provided on the base (1), the second connecting plate (11) being fixed to the bottom of the groove (12), a buffer assembly (3) being provided between the first connecting plate (21) and the second connecting plate (11), the buffer assembly (3) comprising a first rubber support (31) and a second rubber support (32) being fixed between the first connecting plate (21) and the second connecting plate (11), a protrusion (311) being provided at the top of the first rubber support (31), a recess (22) being provided at the bottom of the staircase (2), the protrusion (311) being inserted into the recess (22), and the protrusion (311) being fixed to the staircase (2).

2. The earthquake-resistant prefabricated staircase assembly connection device according to claim 1, characterized in that: A rubber frame plate (4) is provided between the first rubber support (31) and the second rubber support (32), a plurality of lead rubber supports (41) are fixed inside the rubber frame plate (4), the plurality of lead rubber supports (41) are evenly distributed inside the rubber frame plate (4), the lead rubber supports (41) are fixed between the first connecting plate (21) and the second connecting plate (11), and a hydraulic shock-absorbing assembly (5) capable of reducing the shaking intensity of the stairs (2) during an earthquake is provided between two adjacent lead rubber supports (41).

3. The earthquake-resistant prefabricated staircase assembly connection device according to claim 2, characterized in that: The hydraulic shock-absorbing assembly (5) includes a support seat (51) and a capsule (52). The support seat (51) is fixed between two adjacent lead rubber supports (41). The capsule (52) is provided on both sides of the support seat (51). The capsule (52) is fixed between the support seat (51) and the rubber frame plate (4). A baffle (23) is integrally formed at the bottom of the staircase (2). The baffle (23) is located on a side of the second rubber support (32) away from the first rubber support (31). A liquid storage tank (53) is fixed on the outside of the baffle (23). A liquid guide tube (54) is connected to the outside of the liquid storage tank (53). A first liquid guide hole (55) is provided on the first rubber support (31). The first liquid guide hole (55) is communicated with the capsule (52). A second liquid guide hole (56) is provided on the support seat (51). The two capsules (52) are communicated through the second liquid guide hole (56). A third liquid guide hole (57) is formed on the second rubber support (32), and the third liquid guide hole (57) passes through the rubber frame plate (4) and the baffle (23), and is connected to the liquid storage tank (53). The first liquid guide hole (55) is connected to the liquid guide tube (54) on the side away from the capsule (52).

4. The earthquake-resistant prefabricated staircase assembly connection device according to claim 3, characterized in that: A restoring assembly (6) for restoring the bladder (52) is provided inside the liquid storage tank (53). The restoring assembly (6) includes a piston plate (61), a movable rod (62) and a spring (63). The piston plate (61) is slidably connected to the inside of the liquid storage tank (53). The movable rod (62) is fixed to one side of the piston plate (61). The movable rod (62) passes through the side wall of the liquid storage tank (53). The spring (63) is sleeved on the movable rod (62). The spring (63) is fixed between the piston plate (61) and the inner wall of the liquid storage tank (53).

5. The earthquake-resistant prefabricated staircase assembly connection device according to claim 3, characterized in that: A gas replenishing component (7) for inflating the sac (52) is provided on each support seat (51).

6. The earthquake-resistant prefabricated staircase assembly connection device according to claim 5, characterized in that: The gas replenishing assembly (7) includes a storage box (71), which is fixedly connected to the top of the support base (51). A discharge device (72) for discharging and generating high temperature is fixedly connected to the outer wall of the storage box (71), and one side of the discharge device (72) is electrically connected to a wire (73). A sodium azide solid (74) is provided inside the storage box (71), and the sodium azide solid (74) is sleeved on the wire (73). An air inlet (75) is opened on the inner wall of the support base (51), and the air inlet (75) is connected to the capsule (52). A one-way valve (76) is installed on the inner wall of the air inlet (75). An extrusion block (77) for squeezing the switch of the discharge device (72) after moving is fixedly connected to the inner wall of the rubber frame plate (4).

7. The earthquake-resistant prefabricated staircase assembly connection device according to claim 6, characterized in that: The end area of ​​the extrusion block (77) is larger than the end area of ​​the switch of the discharge device (72).

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