An elevator emergency brake mechanism

Abstract

The elevator emergency brake mechanism comprises a bolt seat, a bolt slidingly arranged on the bolt seat, a plurality of bolt holes arranged on the guide rail from top to bottom for cooperating with the bolt, the bolt comprises an inner bolt body and an outer bolt sleeve which are sleeved together, and the inner bolt body and the outer bolt sleeve are connected through a spring; further comprising a linkage mechanism for connecting with a pull arm to insert the bolt into the bolt hole, the linkage mechanism comprises a connecting rod one hinged with the pull arm, a sliding block hinged with the connecting rod one, a vertical guide rail one for installing the sliding block, and a connecting rod two hinged with the sliding block, and the other end of the connecting rod two is hinged with the outer bolt sleeve. The elevator can still be emergency braked when the safety gear block fails during the operation of the elevator.

Description

Technical Field

[0001] This invention relates to the field of vertical elevators, specifically to an elevator emergency braking mechanism. Background Technology

[0002] An elevator is a permanent transportation device that serves several specific floors within a building, with its car moving on at least two rigid tracks perpendicular to the horizontal plane or at an angle of inclination to the vertical of less than 15°. An elevator generally includes a braking structure consisting of a speed governor, a lifting mechanism, and a safety brake. The lifting mechanism, acting as the safety brake's activation device, transmits the mechanical action of the speed governor to the safety brake, ultimately actuating it via the lifting arm. Once actuated, the safety brake's internal clamps clamp the elevator onto the guide rails, preventing further descent.

[0003] However, since elevators are commonly used special equipment for carrying people and are used frequently, if the clamps wear out or fail, the elevator still faces the risk of rapid descent.

[0004] Therefore, ensuring the safety of special equipment such as elevators is an important area that researchers have been working on. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an elevator emergency braking mechanism that ensures the elevator can still brake in an emergency when the safety clamp blocks fail during operation.

[0006] An elevator emergency braking mechanism includes a pin seat, a pin slidably disposed on the pin seat, and a plurality of insertion holes arranged from top to bottom on a guide rail for engaging with the pin. The pin includes an inner pin body and an outer pin sleeve fitted together, and the inner pin body and the outer pin sleeve are connected by a spring.

[0007] It also includes a linkage mechanism for connecting to the lifting arm to insert the pin into the socket. The linkage mechanism includes a first link hinged to the lifting arm, a slider hinged to the first link, a first vertical guide rail for mounting the slider, and a second link hinged to the slider. The other end of the second link is hinged to the outer pin sleeve.

[0008] Preferably, the pin holder includes a base and a sliding sleeve connected to the base for mounting the pin.

[0009] Preferably, the two ends of the sliding sleeve are connected, and the end of the pin near the vertical guide rail is connected to the vertical guide rail through a return spring.

[0010] Preferably, the socket extends vertically, and a buffer device is provided at the bottom of the socket.

[0011] Preferably, the buffer device includes a base for connecting to the guide rail, a buffer spring disposed on the base, and a pin support plate connected to the buffer spring.

[0012] Preferably, the vertical length of the socket is 0.5m-1m.

[0013] Preferably, the end of the inner pin is fitted with a ball bearing.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. This invention can ensure that the elevator can still be braked in an emergency when the safety clamp block fails during elevator operation. Attached Figure Description

[0016] Figure 1 A schematic diagram illustrating the use of an elevator emergency braking mechanism;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the pin structure;

[0019] Figure 4 This is a schematic diagram showing the connection between the pin and the vertical guide rail 1.

[0020] Figure 5 This is a schematic diagram of the installation of the buffer device. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example: Figure 1-3 As shown, an elevator emergency braking mechanism is used in conjunction with a lifting mechanism in the prior art. As in the prior art, the lifting mechanism is installed on the upper beam of the car frame. The lifting mechanism has two symmetrically arranged lifting arms 02 and a rotating shaft 03 connecting the two lifting arms 02. The lifting arms 02 rotate to activate the safety clamp.

[0023] The elevator emergency braking mechanism includes a pin seat 1 and a pin 2 slidably disposed on the pin seat 1. The pin seat 1 is used to be fixedly connected to the car top. It also includes a plurality of insertion holes 011 arranged from top to bottom on the guide rail 01 for cooperating with the pin 2. The pin 2 includes an inner pin body 21 and an outer pin sleeve 22 that fit together. The inner pin body 21 and the outer pin sleeve 22 are connected by a spring 23.

[0024] It also includes a linkage mechanism 3 for connecting to the lifting arm 02 to insert the pin 2 into the socket 011. Specifically, the linkage mechanism 3 includes a connecting rod 31 hinged to the lifting arm, a slider 32 hinged to the connecting rod 31, and a vertical guide rail 33 for mounting the slider 32. The vertical guide rail 33 is fixedly connected to the car top. The linkage mechanism 3 also includes a connecting rod 34 hinged to the slider 32. The other end of the connecting rod 34 is hinged to the outer pin sleeve 22.

[0025] In this embodiment, the elevator emergency braking mechanism can push the pin 2 out of the pin seat 1 by the linkage mechanism 3 while the lifting arm 02 rotates to activate the safety clamp. If the pin 2 is not aligned with the socket 011, the pin 2 is in a compressed state and abuts against the guide rail 01. When the clamping blocks of the safety clamp are worn too much and cannot clamp onto the guide rail 01, the car will fall. The pin 2 moves on the guide rail 01 with the car. When the car falls until the pin 2 is aligned with the socket 011, the pin 2 is inserted into the socket 011 to prevent the elevator from falling further and ensure that the elevator can still be braked in an emergency.

[0026] In addition, the elevator emergency braking mechanism has the following advantages:

[0027] 1: The emergency braking mechanism of this elevator is triggered by the lifting arm 02, without the need for a separate power trigger, which is simple in structure and low in cost.

[0028] 2: The elevator's emergency braking mechanism works in conjunction with the existing safety brake to perform emergency braking, sharing the force on the safety brake and extending the service life of the more expensive safety brake.

[0029] 3: The elevator emergency braking mechanism utilizes the guide rail 01 to open the insertion hole 011 to cooperate with the pin 2, eliminating the need for a separate mating part in the shaft to cooperate with the pin 2, which is low in cost and easy to install.

[0030] In this embodiment, preferably, a ball bearing 44 is embedded at the end of the inner pin 21. The presence of the ball bearing 44 can reduce the wear of the inner pin 21 on the guide rail 01, and at the same time, it can also reduce the wear of the guide rail 01 and extend the life of the guide rail 01.

[0031] During the process of the car stopping when the pin 2 is inserted into the socket 011, the pin 2 will be impacted, and the impact will be transmitted to the pin seat 1. In this embodiment, the pin seat 1 includes a seat body 11 and a sliding sleeve 12 connected to the seat body 11 for mounting the pin 2. The sliding sleeve 12 covers the pin 2 with a large contact area, and can withstand the impact transmitted from the pin 2 without deformation during the process of the car stopping when the pin 2 is inserted into the socket 011.

[0032] In this embodiment, preferably, as follows: Figure 4As shown, the two ends of the sliding sleeve 12 are connected, and the end of the pin 2 near the vertical guide rail 33 is connected to the vertical guide rail 33 via a return spring 13. When the clamp blocks of the safety clamp are repaired or replaced, the entire emergency braking mechanism needs to be reset. The presence of the return spring 13 ensures that the pin 2 resets quickly.

[0033] like Figure 5 As shown, the socket 011 extends vertically, and a buffer device 4 is provided at the bottom of the socket 011. The vertically extending socket, combined with the buffer device 4, prevents the car from momentarily stopping when the pin 2 is inserted into the socket 011, reducing the impact on the guide rail 01 and the pin 2, and extending the lifespan of the guide rail 01 and the pin 2. The vertical length of the socket 011 is 0.5m-1m, providing a large buffer distance.

[0034] The buffer device 4 includes a base 41 for connecting to the guide rail 01, a buffer spring 42 disposed on the base 41, and a pin support plate 43 connected to the buffer spring 42. The buffer device 4 is preferably disposed on the back of the guide rail 01 and between the guide rail brackets 012, so as not to affect the installation of the guide rail itself or interfere with mechanisms such as safety clamps.

[0035] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention have been fully described in the claims.

Claims

1. An elevator emergency braking mechanism, characterized in that, Includes a pin seat (1), a pin (2) slidably disposed on the pin seat (1), and a plurality of insertion holes (011) arranged from top to bottom on the guide rail (01) for engaging with the pin (2). The pin (2) includes an inner pin body (21) and an outer pin sleeve (22) fitted together. The inner pin body (21) and the outer pin sleeve (22) are connected by a spring (23). It also includes a linkage mechanism (3) for connecting to the lifting arm (02) to insert the pin (2) into the socket (011), the linkage mechanism (3) including a first link (31) hinged to the lifting arm, a slider (32) hinged to the first link (31), a first vertical guide rail (33) for mounting the slider (32), and a second link (34) hinged to the slider (32), the other end of the second link (34) being hinged to the outer pin sleeve (22).

2. The elevator emergency braking mechanism according to claim 1, characterized in that, The pin holder (1) includes a seat (11) and a sliding sleeve (12) connected to the seat (11) for mounting the pin (2).

3. The elevator emergency braking mechanism according to claim 2, characterized in that, The two ends of the sliding sleeve (12) are connected, and the end of the pin (2) near the vertical guide rail (33) is connected to the vertical guide rail (33) through the return spring (13).

4. The elevator emergency braking mechanism according to claim 1, characterized in that, The socket (011) extends vertically, and a buffer device (4) is provided at the bottom of the socket (011).

5. An elevator emergency braking mechanism according to claim 4, characterized in that, The buffer device (4) includes a base (41) for connecting to the guide rail (01), a buffer spring (42) disposed on the base (41), and a pin support plate (43) connected to the buffer spring (42).

6. An elevator emergency braking mechanism according to claim 4, characterized in that, The vertical length of the socket (011) is 0.5m-1m.

7. An elevator emergency braking mechanism according to claim 1, characterized in that, The end of the inner pin (21) is fitted with a ball (24).

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