Elevator braking device

Abstract

The elevator braking device comprises an elevator bin and a bottom plate, a supporting disc is fixedly installed on the bottom side of the elevator bin, the bottom end of the supporting disc is connected with a supporting rod, a piston at the bottom end of the supporting rod is connected with a piston cavity pipe, and the bottom plate is fixedly installed at the bottom end of the piston cavity pipe. A first brake assembly is installed on the side of the bottom of the piston cavity pipe. The invention relates to the technical field of elevator emergency braking. When the elevator braking device is used, the elevator bin is directly supported, the displacement length during speed reduction is reduced, braking can be rapidly carried out, the elevator bin is conveyed to a proper safe position, and the overall practicability of the braking device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator emergency braking, and in particular to an elevator braking device. Background Art

[0002] Elevators are an indispensable means of vertical transportation in daily life. Especially in modern society, with more and more high-rise buildings and large shopping malls, the use of elevators has become more and more common. However, with the increasing frequency of elevator use, safety issues have also attracted increasing attention. In this context, the existence of elevator emergency brakes is particularly important. It is an important part of ensuring the safe operation of elevators. It can respond quickly and take action in emergency situations to effectively prevent accidents.

[0003] In the prior art, the most common types of elevators are hydraulic and suspended types. The suspended type is suitable for high floors, and the hydraulic type is most commonly used for low floors. In the prior art, when a hydraulic elevator uses emergency braking, it is generally the same as the suspended type used on high floors. The elevator car descends rapidly, causing the emergency brake disc at the top of the floor to rotate rapidly, thereby centrifugally clamping the emergency brake disc with a block, thereby achieving a rapid braking effect. When a hydraulic elevator fails, it is generally due to a cylinder explosion or oil leakage in the hydraulic device. When it leaks, there is still hydraulic pressure inside, which will cause the elevator to descend, but the descent speed will not be very fast, which can easily lead to the inability to brake by centrifugal force, thus affecting safety. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an elevator braking device to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: An elevator braking device comprises an elevator car and a base plate, wherein a support plate is fixedly mounted on the bottom side of the elevator car, a support rod is connected to the bottom end of the support plate, a piston at the bottom end of the support rod is connected to a piston cavity, the base plate is fixedly mounted on the bottom end of the piston cavity, a first brake assembly is mounted on the bottom side of the piston cavity, and a second brake assembly is mounted on the bottom side of the elevator car.

[0006] By adopting the above technical solution, the support rod and the piston cavity tube are arranged to cooperate with the first brake assembly, so that braking can be performed when the hydraulic device leaks oil, so that the elevator car can slowly descend to a suitable position. The second brake assembly is arranged to take over the support after the main support of the elevator is bent and damaged, and use air pressure to slowly descend the elevator car to a suitable position.

[0007] In a preferred example, the present invention can be further configured as follows: the first brake assembly includes a connecting tube, the connecting tube is connected to the bottom side of the piston cavity tube, a transfer bin is installed at the end of the connecting tube, a connecting groove is opened on the side of the transfer bin away from the piston cavity tube, and a connecting tube is connected in the connecting groove.

[0008] By adopting the above technical solution, the connecting pipe and transfer tank are set up, so that the hydraulic oil will enter the transfer tank first when in use, and be transported through the connecting groove. At the same time, it is used to slow down the flow rate of the hydraulic oil when passing through the transfer tank during braking, so as to achieve the braking effect.

[0009] In a preferred example, the present invention can be further configured as follows: a support spring is provided on the inner wall of the transfer bin, the support spring is installed on the side of the connecting groove, and a baffle is fixedly installed on one end of the support spring away from the connecting groove.

[0010] By adopting the above technical solution, the support spring is used to support the baffle when in use, thereby limiting the flow rate of the hydraulic oil, allowing the hydraulic oil to flow slowly, thereby ensuring that the elevator can be lifted and lowered stably and slowly, thereby increasing the stability of the elevator.

[0011] In a preferred example, the present invention can be further configured as follows: a conical opening is provided on the baffle, the conical opening is gradually contracted toward the direction of the connecting groove, a fixed tube is provided between the baffle and the connecting tube, the fixed tube is fixedly connected to the baffle, one end of the baffle close to the connecting groove is fixedly connected to a mesh tube, and the mesh tube extends into the connecting groove.

[0012] By adopting the above-mentioned technical scheme, the conical mouth is provided in conjunction with the baffle and the support spring. When in use, after the hydraulic device leaks oil, the elevator car will drop rapidly due to insufficient hydraulic pressure, thereby reducing the flow rate of the hydraulic oil through the baffle, the conical mouth and the support spring, thereby reducing the descent rate of the elevator car, ensuring that after braking, the elevator car can drop slowly, thereby increasing safety.

[0013] In a preferred example, the present invention can be further configured as follows: the second brake assembly includes a load-bearing rod, which is fixedly mounted on the top of the base plate and located on the side of the piston cavity tube, the top piston of the load-bearing rod is connected to a load-bearing tube, and the top end of the load-bearing tube is fixedly connected to the bottom side of the elevator car.

[0014] By adopting the above technical solution, the load-bearing rod is arranged to cooperate with the load-bearing tube as the second support, thereby further controlling the descending rate of the elevator car and ensuring the stability of the elevator when in use.

[0015] In a preferred example, the present invention can be further configured as follows: a slot is provided on the top side of the supporting tube, the slot is conical, the slot gradually shrinks from the inside to the outside, and a cushion is provided between the supporting tube and the bottom side of the elevator compartment.

[0016] By adopting the above technical solution, when the elevator car is raised or lowered, the air intake and exhaust volumes are limited by the slots on the load-bearing rods and the load-bearing tubes, thereby ensuring that the elevator can rise or descend stably.

[0017] In summary, the present invention includes at least one of the following beneficial technical effects: 1. This elevator braking device directly supports the elevator car when in use, reduces the displacement length during deceleration, can brake quickly, and send the elevator car to a suitable safe position, increasing the overall practicality of the braking device; 2. This kind of elevator braking device is provided with a soft cushion, so that when the load-bearing cavity tube is mainly supported by the support rod, the load-bearing tube will not be supported due to the soft cushion and will only move when rising or falling. When the support rod is bent or damaged by the slot, the soft cushion will be squeezed, and then the load-bearing tube will be quickly pressed down by the force of the elevator compartment. At the same time, the air in the load-bearing tube will be squeezed and leak out from the slot. Since the diameter of the slot is small, the internal air can only flow out slowly at this time, thereby causing the elevator to slowly descend, ensuring the personal safety of the people inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 The figure is a schematic diagram of the overall structure of an elevator braking device of the present invention.

[0020] Figure 2 The figure is a schematic diagram of the internal structure of a transfer chamber of an elevator braking device of the present invention.

[0021] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0022] In the figure, 1, elevator compartment; 2, support plate; 3, support rod; 4, piston chamber tube; 5, first brake assembly; 6, second brake assembly; 7, connecting pipe; 8, transfer compartment; 9, connecting groove; 10, connecting pipe; 11, support spring; 12, baffle; 13, tapered mouth; 14, fixing pipe; 15, mesh pipe; 16, load-bearing rod; 17, load-bearing tube; 18, slot hole; 19, cushion; 20, bottom plate. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Reference Figure 1-Figure 3 The present invention discloses an elevator braking device, comprising an elevator car 1 and a base plate 20, wherein a support plate 2 is fixedly installed on the bottom side of the elevator car 1, a support rod 3 is connected to the bottom end of the support plate 2, a piston at the bottom end of the support rod 3 is connected to a piston cavity 4, the base plate 20 is fixedly installed on the bottom end of the piston cavity 4, a first brake assembly 5 is installed on the bottom side of the piston cavity 4, and a second brake assembly 6 is installed on the bottom side of the elevator car 1.

[0025] In this embodiment, during normal use, hydraulic oil is injected into the piston cavity 4 to drive the support rod 3, so that the support rod 3 is raised and lowered, and then the elevator car 1 is raised and lowered. If the hydraulic device leaks oil, the hydraulic pressure in the piston cavity 4 is insufficient, which will cause the elevator car 1 to descend at an increased speed. At this time, the first brake assembly 5 is used to decelerate and the elevator reaches a safe position. When the support rod 3 cooperates with the support plate 2 to contact the top of the piston cavity 4, the elevator car 1 is located on the first floor, thereby achieving a braking effect. If the support rod 3 is bent or damaged, the second brake assembly 6 will serve as the main support, so that the second brake assembly 6 will take over the support and suppress the descending speed of the elevator car 1 through air pressure to ensure that the elevator is in a slow state when descending, and to ensure the personal safety of the people in the elevator car 1. When the device is used, the elevator car 1 is directly supported, which reduces the displacement length during deceleration, can be braked quickly, and the elevator car 1 is sent to a suitable safe position, thereby increasing the overall practicality of the braking device.

[0026] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the first brake assembly 5 includes a connecting pipe 7, which is connected to the bottom side of the piston chamber tube 4. A transfer bin 8 is installed at the end of the connecting pipe 7. A connecting groove 9 is opened on the side of the transfer bin 8 away from the piston chamber tube 4, and a connecting pipe 10 is connected to the connecting groove 9.

[0027] In this embodiment, when in use, when the transfer chamber 8 is braking, the hydraulic oil will be limited by the transfer chamber 8, thereby ensuring that when the hydraulic device is under-pressured, the hydraulic pressure can flow out slowly, thereby ensuring that the elevator chamber 1 can descend slowly and ensuring the personal safety of people in the elevator.

[0028] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a support spring 11 is provided on the inner wall of the transfer bin 8, and the support spring 11 is installed on the side of the connecting groove 9. A baffle 12 is fixedly installed on one end of the support spring 11 away from the connecting groove 9.

[0029] In this embodiment, the support spring 11 is provided to cooperate with the baffle 12, so that the baffle 12 is blocked at the connecting groove 9, so that when the elevator descends uncontrollably or the hydraulic device leaks oil and causes insufficient pressure supply, the baffle 12 will be subjected to a larger hydraulic pressure of the hydraulic oil, thereby sealing the connecting groove and ensuring that the elevator stops descending.

[0030] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the baffle plate 12 is provided with a conical opening 13, and the conical opening 13 is gradually contracted toward the direction of the connecting groove 9. A fixed pipe 14 is provided between the baffle plate 12 and the connecting pipe 10, and the fixed pipe 14 is fixedly connected to the baffle plate 12. One end of the baffle plate 12 close to the connecting groove 9 is fixedly connected with a net pipe 15, and the net pipe 15 extends into the connecting groove 9.

[0031] In this embodiment, in order to ensure that personnel can quickly escape due to elevator failure, a tapered mouth 13 is set, so that when the elevator descends rapidly, the hydraulic flow rate will increase, thereby increasing the hydraulic pressure in the transfer chamber 8, so that the hydraulic oil is ejected from the connecting pipe 7, so that the baffle 12 is subjected to greater hydraulic pressure, and combined with the curved side wall in the tapered mouth 13, the hydraulic oil can only flow out from the tapered mouth 13, and the connecting groove 9 will be sealed by the fixed pipe 14, and the network pipe 15 will completely enter the connecting groove 9. The diameter of the tapered mouth 13 is relatively small. At this time, the hydraulic oil will be restricted by the diameter of the tapered mouth 13 when it wants to go out from the tapered mouth 13, so that the flow rate of the outflowing hydraulic oil is slower, and then the elevator chamber 1 reduces the descent speed to ensure the safety of the personnel inside the elevator chamber 1.

[0032] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the second brake assembly 6 includes a load-bearing rod 16, which is fixedly mounted on the top of the base plate 20 and located on the side of the piston cavity 4. The top piston of the load-bearing rod 16 is connected to a load-bearing tube 17, and the top of the load-bearing tube 17 is fixedly connected to the bottom side of the elevator car 1.

[0033] In this embodiment, the load-bearing rod 16 is used as an auxiliary support when in use. Mainly, if the support rod 3 is bent or damaged, the load-bearing rod 16 will play a supporting role. At the same time, the load-bearing tube 17 is set to increase the internal air pressure of the load-bearing tube 17 by the lowering of the load-bearing rod 16, and then slow down the downward pressure of the elevator car 1 by the internal air pressure.

[0034] In a further preferred embodiment of the present invention, Figure 1-3 As shown, a slot 18 is provided on the top side of the supporting tube 17. The slot 18 is conical and gradually narrows from the inside to the outside. A cushion 19 is provided between the supporting tube 17 and the bottom side of the elevator compartment 1.

[0035] In this embodiment, the cushion 19 is provided so that when the load-bearing cavity tube is mainly supported by the support rod 3, the load-bearing tube 17 will not be supported due to the cushion 19 and will only move when rising or falling. When the support rod 3 is bent or damaged by the slot 18, the cushion 19 will be squeezed, and then the load-bearing tube 17 will be rapidly pressed down by the force of the elevator car 1. At the same time, the air in the load-bearing tube 17 will be squeezed and leak out from the slot 18. Since the diameter of the slot 18 is small, the internal air can only flow out slowly at this time, thereby causing the elevator to slowly descend, thereby ensuring the personal safety of the people inside.

[0036] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An elevator braking device, comprising an elevator car (1) and a bottom plate (20), characterized in that: A support plate (2) is fixedly mounted on the bottom side of the elevator compartment (1), a support rod (3) is connected to the bottom end of the support plate (2), a piston at the bottom end of the support rod (3) is connected to a piston chamber (4), the bottom plate (20) is fixedly mounted on the bottom end of the piston chamber (4), a first brake assembly (5) is mounted on the bottom side of the piston chamber (4), and a second brake assembly (6) is mounted on the bottom side of the elevator compartment (1).

2. An elevator braking device according to claim 1, characterized in that: The first brake assembly (5) comprises a connecting pipe (7), the connecting pipe (7) being in communication with the bottom side of the piston chamber tube (4), a transfer chamber (8) being installed at the end of the connecting pipe (7), a connecting groove (9) being provided on a side of the transfer chamber (8) away from the piston chamber tube (4), and a connecting pipe (10) being connected in the connecting groove (9).

3. An elevator braking device according to claim 2, characterized in that: A support spring (11) is provided on the inner wall of the transfer bin (8), the support spring (11) is installed on the side of the connecting groove (9), and a baffle (12) is fixedly installed on one end of the support spring (11) away from the connecting groove (9).

4. An elevator braking device according to claim 3, characterized in that: The baffle plate (12) is provided with a conical opening (13), and the conical opening (13) is gradually contracted in the direction of the connecting groove (9). A fixed pipe (14) is provided between the baffle plate (12) and the connecting pipe (10), and the fixed pipe (14) is fixedly connected to the baffle plate (12). One end of the baffle plate (12) close to the connecting groove (9) is fixedly connected to a net pipe (15), and the net pipe (15) extends into the connecting groove (9).

5. An elevator braking device according to claim 4, characterized in that: The second brake assembly (6) includes a bearing rod (16), which is fixedly mounted on the top of the base plate (20) and located on the side of the piston chamber (4), and the top piston of the bearing rod (16) is connected to a bearing tube (17), and the top of the bearing tube (17) is fixedly connected to the bottom side of the elevator compartment (1).

6. An elevator braking device according to claim 5, characterized in that: A slot (18) is provided on the top side of the supporting tube (17), the slot (18) is conical, and the slot (18) is gradually reduced from the inside to the outside. A cushion (19) is provided between the supporting tube (17) and the bottom side of the elevator compartment (1).

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