Elevator with protection function

Abstract

The present application relates to the technical field of elevator, and especially relates to an elevator with a protection function, which comprises a shaft and a plurality of guide rails fixedly connected in the shaft; a car is slidably connected on all the guide rails; a driver is connected on the shaft, and the driver is connected with the car; a box is fixedly connected on the shaft; a connecting plate is fixedly connected on the box; a plurality of round rods are slidably connected on the connecting plate; a movable plate is fixedly connected among all the round rods; in the initial stage of the buffer protection, only the piston plate buffers the car, which is beneficial to reduce the resistance of the car contacting the rubber pad in the initial stage of the high-speed falling, avoids the problem of violent impact due to the excessive resistance, avoids the harm to the passengers, and is beneficial to improve the safety; in the latter half stage of the buffer protection, the piston plate one and the piston plate two cooperate to buffer the car, which can improve the buffering force in the latter half stage to ensure the buffering effect of the car.

Description

Technical Field

[0001] This invention relates to the technical field of elevators. More specifically, this invention relates to an elevator with protective functions. Background Technology

[0002] When an elevator malfunctions and falls freely, a buffer protection device is usually installed at the bottom of the elevator shaft to ensure passenger safety. These devices often employ a hydraulic buffer structure, absorbing and dissipating the kinetic energy of the fall through hydraulic damping, thereby achieving deceleration and braking. However, to ensure sufficient buffering capacity, the damping force of the hydraulic system is often set relatively high. While this helps to effectively suppress subsequent impact motion, it also introduces a problem: the high-speed falling car, upon first contact with the buffer, will experience a violent impact due to the excessive damping force, resulting in a sudden increase in instantaneous acceleration. This not only affects ride comfort but may also cause injury to passengers, leading to ineffective safety protection. Summary of the Invention

[0003] To overcome the drawback that a rapidly descending elevator car will experience a violent impact due to excessive damping force upon first contact with the buffer, resulting in a sudden increase in instantaneous acceleration, which not only affects ride comfort but may also cause injury to passengers, this invention provides an elevator with protective functions.

[0004] The technical solution is as follows: An elevator with protective functions includes a shaft and several guide rails fixed within the shaft; a car is slidably connected to all guide rails; a drive unit is connected to the shaft and connected to the car; the elevator also includes a car body; the car body is fixedly connected to the shaft; a connecting plate is fixedly connected to the car body; several round rods are slidably connected to the connecting plate; a movable plate is fixedly connected between all the round rods; a spring is fixedly connected to the movable plate and is fixedly connected to the connecting plate; a piston plate is slidably connected to the inside of the car body and is fixedly connected to the round rods; several damping holes are formed on the piston plate; a spring is fixedly connected to the car body; a piston plate is fixedly connected to the spring and is slidably connected to the car body; several damping holes are formed on the piston plate.

[0005] Furthermore, it also includes rubber pads; rubber pads are fixed to the movable plate.

[0006] Furthermore, when piston plate one and piston plate two overlap, damping hole one and the corresponding damping hole two are misaligned but remain connected.

[0007] Furthermore, it also includes spring three; piston plate two is divided into several thin plate sections, which are slidably connected to the housing; several spring three are fixedly connected between each two adjacent thin plate sections.

[0008] Furthermore, the elastic coefficient of the upper spring is smaller than that of the lower spring.

[0009] Furthermore, each thin plate section has several through holes.

[0010] Furthermore, it also includes a check valve; a check valve is installed on the piston plate.

[0011] Furthermore, it also includes a sealing ring 1; several sealing rings 1 are fixedly attached to the uppermost thin plate portion, and the sealing rings 1 are located outside the corresponding through holes.

[0012] Furthermore, it also includes a second sealing ring; the second sealing ring is fixed to the outer side of the piston plate and contacts the housing.

[0013] Furthermore, it also includes a sealing ring three; the sealing ring three is fixed to the outer side of the thin plate section, and the sealing ring three is in contact with the box body.

[0014] The beneficial effects of this invention are as follows: First, in the initial stage of buffer protection, the car is buffered only by the piston plate pair, which helps to reduce the resistance encountered by the car in the initial stage of contact with the rubber pad at high speed, avoids the problem of violent impact due to excessive resistance, avoids injury to passengers, and helps to improve safety. In the second half of the buffer protection stage, the piston plate one and piston plate two cooperate to buffer the car together, which can improve the buffering force in the second half stage and ensure the buffering effect on the car. Second, by staggering the damping hole one and damping hole two, the resistance of hydraulic oil passing through damping hole one and damping hole two can be increased, thereby improving the buffer protection effect. In addition, damping hole one and damping hole two are both straight holes. Compared with the existing technology of directly opening tortuous damping holes on the piston to increase resistance, this method has lower processing difficulty. Third, the piston plate is divided into four thin plate sections. During the buffering process, the four thin plate sections are stacked one by one under the piston plate, so that the buffering resistance is gradually and linearly increased, which greatly reduces the jerking phenomenon of the box and helps to improve the protection effect for passengers. Fourth, the elastic coefficient of the lower spring three is set to be much greater than that of the upper spring three. Even if the upper spring three is compressed and generates elastic force, the lower spring three will not be compressed. That is, during the downward movement of the upper thin plate, the lower thin plate can remain stationary. At the same time, the hydraulic oil can easily pass through the through hole, so that the hydraulic oil pressure on the upper and lower sides of the lower thin plate can always remain balanced, thereby keeping the lower thin plate stationary. This allows the four thin plates to gradually stack together to ensure the linear superposition effect of the buffer resistance, which is beneficial to improving the protection effect for passengers. 5. The through hole is used to allow the four thin plate sections to be gradually stacked, and it is also used in conjunction with the one-way valve to quickly reset the moving plate and thin plate sections, thereby restoring the buffer protection function as soon as possible and improving the protection effect. Attached Figure Description

[0015] Figure 1 A structural schematic diagram of the elevator with protective functions according to the present invention is shown; Figure 2 A schematic diagram of the internal structure of the housing of the present invention is shown; Figure 3 A schematic diagram of the structure of the piston plate of the present invention is shown; Figure 4 This diagram shows the rearward stacking of piston plate one and piston plate two according to the present invention. Figure 5 A schematic diagram of the structure of the piston plate II of the present invention is shown; Figure 6 An exploded view of the piston plate 2 of the present invention is shown from a first perspective. Figure 7 An exploded view of the piston plate 2 of the present invention is shown from a second perspective.

[0016] The markings in the attached diagram are: 1-Hoistway, 2-Guide rail, 3-Car, 4-Driver, 5-Box, 6-Connecting plate, 7-Round rod, 8-Moving plate, 9-Spring 1, 10-Piston plate 1, 11-Spring 2, 12-Piston plate 2, 201-Rubber pad, 202-One-way valve, 203-Spring 3, 204-Sealing ring 1, 205-Sealing ring 2, 206-Sealing ring 3, 1091-Damping hole 1, 1291-Damping hole 2, 1292-Thin plate section, 1293-Through hole. Detailed Implementation

[0017] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0018] Example 1: An elevator with protective functions, such as... Figures 1-7 As shown, it includes a hoistway 1, guide rails 2, a car 3, and a drive unit 4; two guide rails 2 are bolted to the hoistway 1; the car 3 is slidably connected to all guide rails 2; the drive unit 4 is connected to the hoistway 1, and the drive unit 4 is connected to the car 3; it also includes a housing 5, a connecting plate 6, a round rod 7, a movable plate 8, a spring 9, a piston plate 10, a spring 11, and a piston plate 12; the housing 5 is bolted to the hoistway 1, and the housing 5 is made of alloy material; the connecting plate 6 is bolted to the housing 5; the connecting plate 6... The sliding connection consists of four round rods 7; a movable plate 8 is fixedly connected to all the round rods 7; a spring 9 is fixedly connected between the connecting plate 6 and the movable plate 8; a piston plate 10 is fixedly connected to all the round rods 7, and the piston plate 10 is slidably connected to the housing 5; ten damping holes 1091 are opened on the piston plate 10; a spring 11 is fixedly connected to the housing 5; a piston plate 12 is fixedly connected to the spring 11, and the piston plate 12 is slidably connected to the housing 5; ten damping holes 1291 are opened on the piston plate 12.

[0019] It also includes a rubber pad 201; the rubber pad 201 is fixed on the movable plate 8 to buffer the impact force of the car 3.

[0020] When piston plate 10 and piston plate 12 overlap, damping hole 1091 and the corresponding damping hole 1291 are partially misaligned but remain connected.

[0021] It also includes spring 3 203; piston plate 2 12 is divided into four thin plate parts 1292, and the thin plate parts 1292 are slidably connected to the housing 5; four spring 3 203 are fixedly connected between each two adjacent thin plate parts 1292.

[0022] The spring constant of the upper spring 3203 is smaller than that of the lower spring 3203.

[0023] Two through holes 1293 are provided on each thin plate section 1292.

[0024] It also includes a one-way valve 202; a one-way valve 202 is installed on the piston plate 10.

[0025] When the car 3 falls, it lands on the rubber pad 201, which then pushes the movable plate 8 downwards. The movable plate 8 drives the round rod 7 downwards, compressing the spring 9. The round rod 7 drives the piston plate 10 downwards. The housing 5 is filled with hydraulic oil. During the downward movement of the piston plate 10, the hydraulic oil on the lower side of the piston plate 10 is squeezed, causing it to flow through the damping hole 1091 to the upper side of the piston plate 10. The hydraulic oil generates a large amount of resistance as it passes through the narrow damping hole 1091, thus buffering the impact force of the falling car 3. After the piston plate 10 moves downwards and contacts the piston plate 12, the damping hole 1091 on the piston plate 10 aligns with the damping hole 1291 on the piston plate 12. The piston plate 10 pushes the piston plate 12 downwards, compressing the spring 11, causing the hydraulic oil on the lower side of the piston plate 12 to flow downwards. Hydraulic oil needs to pass through damping orifice 1291 and damping orifice 1091 to flow to the upper side of piston plate 10. When damping orifice 1091 and damping orifice 1291 are superimposed, it is equivalent to increasing the overall length of the damping orifice. The length of the damping orifice is proportional to the resistance encountered by the hydraulic oil when passing through it, thereby improving the buffering effect on car 3, enabling car 3 to stop stably and with strong safety. In use, in the initial stage of buffer protection, only piston plate 10 buffers car 3, which helps to reduce the resistance encountered by car 3 when it contacts rubber pad 201 at high speed, avoiding the problem of violent impact due to excessive resistance, avoiding injury to passengers, and improving safety. In the latter half of the buffer protection, piston plate 10 and piston plate 12 work together to buffer car 3, which can improve the buffering force in the latter half of the stage and ensure the buffering effect on car 3.

[0026] like Figure 4 As shown, damping hole 1091 and damping hole 2 1291 are staggered. When piston plate 10 is attached to piston plate 2 12 and pushed downward, the hydraulic oil on the lower side of piston plate 2 12 passes through damping hole 1091 and damping hole 2 1291 and flows to the upper side of piston plate 10. After staggering damping hole 1091 and damping hole 2 1291, the resistance of hydraulic oil passing through damping hole 1091 and damping hole 2 1291 can be increased, thereby improving the buffer protection effect. In addition, damping hole 1091 and damping hole 2 1291 are both straight holes. Compared with the existing technology of directly opening tortuous damping holes on piston parts to increase resistance, this method has a lower processing difficulty.

[0027] During the buffering process, when piston plate 10 contacts piston plate 2, the damping force undergoes a sudden step change, causing the car 3 to experience significant jerking, which may injure passengers. Therefore, piston plate 2 is divided into four thin plate sections 1292, counted from top to bottom. During the buffering process, piston plate 10 contacts the first thin plate section 1292 downwards, then pushes the first thin plate section 1292 downwards, compressing spring 3 203. At this time, the piston plate 10 and the first thin plate section 1292 provide buffering resistance. Subsequently, piston plate 10 pushes the first thin plate section 1292 downwards to contact the second thin plate section 1292, and then piston plate 10 pushes the first thin plate section 1292 and the second thin plate section 1292 together. As the car moves downwards, the piston plate 10, the first thin plate portion 1292, and the second thin plate portion 1292 provide buffering resistance. This continues until all four thin plate portions 1292 are stacked on the underside of the piston plate 10, gradually increasing the buffering resistance and significantly reducing the jerking of the car 3, thus improving passenger protection. It should be understood that the spring 2 11 has a relatively large elastic force and will not be compressed before the four thin plate portions 1292 are stacked together. In use, the piston plate 2 12 is divided into four thin plate portions 1292. During the buffering process, these four thin plate portions 1292 are stacked on the underside of the piston plate 2 12, causing the buffering resistance to gradually and linearly increase, significantly reducing the jerking of the car 3 and improving passenger protection.

[0028] During the buffering process, when the piston plate 10 pushes the first thin plate 1292 downward, it compresses the lower spring 203. The resulting elastic force is transmitted to the lower thin plate 1292 and the spring 203, causing all three layers of springs 203 to be compressed simultaneously. This results in the four thin plate sections 1292 stacking and closing together simultaneously, thereby reducing the linear superposition effect of the buffering resistance. Therefore, by setting the elastic coefficient of the lower spring 203 to be much larger than that of the upper spring 203, even if the upper spring 203 is compressed and generates elastic force, the lower spring 203 will not be compressed. That is, during the downward movement of the upper thin plate section 1292, the lower thin plate section 1292 can remain stationary, allowing the four thin plate sections 1292 to gradually stack together to ensure the linear superposition effect of the buffering resistance, which is beneficial to improving the protection effect for passengers.

[0029] During the buffering process, when the piston plate 10 pushes the first thin plate portion 1292 downward, the first thin plate portion 1292 compresses the hydraulic oil below it, causing the hydraulic oil to exert a thrust on the second thin plate portion 1292, causing the second thin plate portion 1292 to move downward. This results in the four thin plate portions 1292 synchronously overlapping and converging, thereby reducing the linear superposition effect of the buffering resistance. Therefore, a through hole 1293 is opened on the thin plate portion 1292. When the piston plate 10 contacts the first thin plate portion 1292 downward, it impacts the through hole 1293 on the first thin plate portion 1292. 3. Cover the area and then push the first thin plate 1292 downward. The first thin plate 1292 compresses the hydraulic oil below it. The through hole 1293 on the lower thin plate 1292 is much larger than the damping hole 1291, so that the hydraulic oil can easily pass through the through hole 1293. This ensures that the hydraulic oil pressure on the upper and lower sides of the lower thin plate 1292 is always balanced, thus keeping the lower thin plate 1292 stationary. This allows the four thin plate 1292 to gradually stack together, ensuring the linear superposition effect of the buffer resistance, which is beneficial to improving the protection effect for passengers.

[0030] During reset, spring 9 rebounds, causing movable plate 8 to move upward. Movable plate 8 then causes round rod 7 to move upward, which in turn causes piston plate 10 to move upward. Hydraulic oil on the upper side of piston plate 10 flows rapidly to the lower side of piston plate 10 through check valve 202, allowing piston plate 10 to reset quickly. Simultaneously, springs 11 and 203 rebound, causing the four thin plate sections 1292 to move upward. Since the thin plate sections 1292 have through holes 1293, the hydraulic oil above them can quickly flow through the through holes 1293 to the area below, allowing the thin plate sections 1292 to reset quickly. This helps to restore the buffer protection function as soon as possible, improving the protection effect. In use, the four thin plate sections 1292 can gradually overlap the through holes 1293, and the check valve 202 is used to quickly reset movable plate 8 and thin plate sections 1292, thereby restoring the buffer protection function as soon as possible and improving the protection effect.

[0031] Example 2, based on Example 1, such as Figure 3 and Figure 6 As shown, it also includes a sealing ring 204; two sealing rings 204 are fixedly attached to the uppermost thin plate portion 1292, and the sealing rings 204 are located outside the corresponding through holes 1293, for sealing the corresponding through holes 1293 when the piston plate 10 contacts the uppermost thin plate portion 1292.

[0032] It also includes a second sealing ring 205; the second sealing ring 205 is fixed to the outside of the piston plate 10, and the second sealing ring 205 contacts the housing 5, thereby improving the sealing between the housing 5 and the piston plate 10.

[0033] It also includes a sealing ring 206; the sealing ring 206 is fixed to the outside of the thin plate portion 1292, and the sealing ring 206 contacts the housing 5, thereby improving the sealing between the housing 5 and the thin plate portion 1292.

[0034] Although the invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.

Claims

1. An elevator with protection function, comprising a shaft (1) and a plurality of guide rails (2) fixed in the shaft (1); a car (3) is slidably connected on all the guide rails (2); a drive (4) is connected on the shaft (1), and the drive (4) is connected with the car (3); characterized in that: It also includes a housing (5); the housing (5) is fixedly connected to the shaft (1); a connecting plate (6) is fixedly connected to the housing (5); several round rods (7) are slidably connected to the connecting plate (6); a movable plate (8) is fixedly connected to all the round rods (7); a spring (9) is fixedly connected to the movable plate (8), and the spring (9) is fixedly connected to the connecting plate (6); a piston plate (10) is slidably connected to the inside of the housing (5), and the piston plate (10) is fixedly connected to the round rods (7); several damping holes (1091) are opened on the piston plate (10); a spring (11) is fixedly connected to the housing (5); a piston plate (12) is fixedly connected to the spring (11), and the piston plate (12) is slidably connected to the housing (5); several damping holes (1291) are opened on the piston plate (12). ​ When piston plate one (10) and piston plate two (12) overlap, damping hole one (1091) and the corresponding damping hole two (1291) are partially misaligned but remain connected; It also includes spring three (203); piston plate two (12) is divided into several thin plate parts (1292), and the thin plate parts (1292) are slidably connected to the box body (5); several spring three (203) are fixedly connected between each two adjacent thin plate parts (1292). The spring constant of the upper spring 3 (203) is smaller than that of the lower spring 3 (203); Each thin plate section (1292) has several through holes (1293). It also includes a check valve (202); a check valve (202) is installed on piston plate one (10).

2. An elevator with protective function according to claim 1, characterized in that: It also includes a rubber pad (201); the movable plate (8) is fixed with a rubber pad (201).

3. An elevator with protective functions according to claim 1, characterized in that: It also includes a sealing ring 1 (204); several sealing rings 1 (204) are fixed on the uppermost thin plate portion (1292), and the sealing rings 1 (204) are located outside the corresponding through hole (1293).

4. An elevator with protective function according to claim 3, characterized in that: It also includes a second sealing ring (205); the piston plate (10) is fixed to the outside of the second sealing ring (205), and the second sealing ring (205) is in contact with the housing (5).

5. An elevator with protective functions according to claim 3 or 4, characterized in that: It also includes a sealing ring three (206); the sealing ring three (206) is fixed to the outside of the thin plate part (1292), and the sealing ring three (206) is in contact with the box body (5).

Images