Novel anti-falling elevator
By setting limit and buffer units in the elevator shaft, the connection force between the wedge brake and the guide rail is enhanced, solving the problem of insufficient friction when the elevator is overspeeding, and achieving higher safety and buffering effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN HUARIFENG LIFTING MASCH CO LTD
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-17
AI Technical Summary
Existing elevator fall protection devices suffer from insufficient friction between the wedge brake and the guide rail when the elevator is overspeeding, which may cause the elevator to continue to fall, resulting in inadequate safety.
A limiting mechanism, including a limiting unit and a buffer unit, is installed in the elevator shaft. The design of the moving block and the docking block enhances the connection force between the wedge brake and the guide rail, and the buffer spring provides buffer space to prevent the impact force when the elevator stops suddenly.
The connection force between the wedge brake and the guide rail is increased during the elevator's descent, enhancing the elevator's safety, preventing it from continuing to descend, increasing the buffering effect, and improving safety.
Smart Images
Figure CN224132487U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator fall prevention technology, specifically a new type of fall-prevention elevator. Background Technology
[0002] An elevator is a permanent transportation device that serves several specific floors within a building. Its car moves on at least two rigid tracks that are perpendicular to the horizontal plane or have an angle of inclination of less than 15° to the vertical. The elevator's vertical movement is generally controlled by a traction machine. The traction rope is connected to the car and the counterweight at both ends and is wound around the traction sheave and guide sheave. The traction motor drives the traction sheave to rotate after being reduced in speed by a reducer. The traction force generated by the friction between the traction rope and the traction sheave realizes the lifting and lowering movement of the car and the counterweight to achieve the transportation purpose.
[0003] In the prior art, multiple devices are generally installed to prevent elevators from suddenly falling. Among them, a spare brake is installed at the bottom of the car, which is controlled by an overspeed regulator installed at the top of the elevator shaft. When the elevator speed exceeds the limit, the gear block pops out and jams the rotating wheel, thereby stopping the rotation of the cable. The brake rod pulls two wedge brakes, which contact the guide rail to prevent the elevator from falling. In order to further improve safety and increase the connection force between the wedge brakes and the guide rail, this utility model proposes a new type of anti-fall elevator. Utility Model Content
[0004] The purpose of this utility model is to provide a new type of fall-proof elevator in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel anti-fall elevator, comprising a brake housing fixed under the car, a guide rail fixed in the elevator shaft on the inner side of the brake housing, two wedge brakes slidably installed on both sides of the guide rail inside the brake housing, a brake rod connected to the outer wall of the wedge brakes via a rotating shaft, a cable that moves synchronously with the brake housing sleeved in the inner cavity of the brake rod, a rotating wheel for positioning the cable transmission sleeved in the outer wall of the cable, the rotation of the rotating wheel being mounted inside a fixed base, an overspeed adjuster located in the inner cavity of the fixed base being fixed in the outer wall of the rotating wheel, and a limiting mechanism set on the guide rail and the wedge brakes;
[0006] The limiting mechanism includes a limiting unit and a buffer unit;
[0007] The limiting unit is used to further increase the connection force between the guide rail and the wedge brake during the process of the brake lever pulling the wedge brake closer to the guide rail.
[0008] The buffer unit is used to provide a certain buffer space for the contact between the guide rail and the wedge brake during the braking process.
[0009] As a further improvement of this utility model: the limiting unit includes a movable block, a docking block, and a docking groove;
[0010] The movable block is vertically slidably installed on the outer wall of the wedge brake. The movable block is used to contact the outer wall of the guide rail, and the movement of the car is braked by the contact friction between the guide rail and the wedge brake.
[0011] The docking block is fixed to the outer wall of the guide rail. The docking block is used to cooperate with the docking groove to further increase the connection force between the guide rail and the wedge brake, and to avoid insufficient friction after the guide rail and the wedge brake come into contact, which would cause the car to continue to descend.
[0012] The docking groove is formed on the outer wall of the movable block, and the docking groove is used to provide guiding space for the docking of the docking blocks.
[0013] As a further improvement of this utility model: the buffer unit includes a positioning rod and a buffer spring;
[0014] The positioning rod is fixed to the top of the movable block and extends into the inner cavity of the wedge brake. The positioning rod is used to guide the vertical movement of the movable block.
[0015] The two ends of the buffer spring are respectively engaged with the top outer wall of the movable block and the inner cavity of the brake housing, and the buffer spring is wrapped around the outer wall of the positioning rod. The buffer spring is used to provide a buffer zone during the contact process between the guide rail and the movable block.
[0016] As a further embodiment of this utility model: the overspeed regulator is composed of a toothed block, a locking block, a second spring, and a movable rod, wherein the locking block is fixed on the inner side of the fixed base and is arranged in a ring.
[0017] As a further embodiment of this utility model: the inner side of the brake housing is formed with a movable groove for the wedge brake to move obliquely, and the top of the brake housing is fixed to the bottom of the car.
[0018] As a further embodiment of this utility model: the number of the docking blocks is set to multiple, the multiple docking blocks are evenly distributed on the outer wall of the guide rail, and the outer wall of the multiple docking blocks is generally inclined.
[0019] As a further embodiment of this utility model: the inner side of the wedge brake is formed with a movable groove for the vertical movement of the movable block, and multiple docking grooves are provided. All of the multiple docking grooves are arranged in an inclined state on the outer wall of the movable block, and the inclination angle of the docking block and the docking groove is the same as the oblique movement angle of the wedge brake.
[0020] Compared with the prior art, the beneficial effects of this utility model are:
[0021] By setting a limit mechanism, during the elevator's descent, the connecting block of the guide rail's outer wall will also connect with the connecting groove of the wedge brake's outer wall during the contact process between the guide rail's outer wall and the wedge brake's outer wall, further improving the connection force. In addition, the spring will buffer the impact force from the sudden stop of the car's descent, thus improving safety. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the limiting mechanism of this utility model;
[0024] Figure 3 This is a cross-sectional view of the internal structure of the fixing base of this utility model.
[0025] In the diagram: 1. Brake housing; 2. Guide rail; 3. Wedge brake; 4. Brake lever; 5. Cable; 6. Rotary wheel; 7. Fixed base; 8. Limiting mechanism; 801. Movable block; 802. Connecting block; 803. Connecting groove; 804. Positioning rod; 805. Buffer spring; 9. Overspeed adjuster; 10. Rotating shaft. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-3In this embodiment of the present invention, a novel anti-fall elevator includes a brake housing 1 fixed under the car, a guide rail 2 fixed in the elevator shaft is provided on the inner side of the brake housing 1, two wedge brakes 3 are slidably installed inside the brake housing 1 on both sides of the guide rail 2, a brake rod 4 is connected to the outer wall of the wedge brake 3 through a rotating shaft 10, a cable 5 that moves synchronously with the brake housing 1 is sleeved in the inner cavity of the brake rod 4, a rotating wheel 6 that positions the transmission of the cable 5 is sleeved in the outer wall of the cable 5, the rotation of the rotating wheel 6 is installed inside the fixed seat 7, an overspeed adjuster 9 located in the inner cavity of the fixed seat 7 is fixed on the outer wall of the rotating wheel 6, and a limiting mechanism 8 is provided on the guide rail 2 and the wedge brake 3.
[0028] The limiting mechanism 8 includes a limiting unit and a buffer unit;
[0029] The limiting unit is used to further increase the connection force between the guide rail 2 and the wedge brake 3 during the process of the brake lever 4 pulling the wedge brake 3 close to the guide rail 2;
[0030] The buffer unit is used to provide a certain buffer space for the contact between the guide rail 2 and the wedge brake 3 during the braking process.
[0031] The limiting unit includes a movable block 801, a docking block 802, and a docking groove 803;
[0032] The movable block 801 is vertically slidably installed on the outer wall of the wedge brake 3. The movable block 801 is used to contact the outer wall of the guide rail 2, and the movement of the car is braked by the contact friction between the guide rail 2 and the wedge brake 3.
[0033] The docking block 802 is fixed to the outer wall of the guide rail 2. The docking block 802 is used to cooperate with the docking groove 803 to further increase the connection force between the guide rail 2 and the wedge brake 3, so as to avoid insufficient friction after the guide rail 2 and the wedge brake 3 come into contact, causing the car to continue to descend.
[0034] The docking groove 803 is formed on the outer wall of the movable block 801, and the docking groove 803 is used to provide guiding space for the docking of the docking block 802;
[0035] The buffer unit includes a positioning rod 804 and a buffer spring 805;
[0036] The positioning rod 804 is fixed to the top of the movable block 801 and extends into the inner cavity of the wedge brake 3. The positioning rod 804 is used to provide guidance for the vertical movement of the movable block 801.
[0037] The two ends of the buffer spring 805 are respectively engaged with the top outer wall of the movable block 801 and the inner cavity of the brake housing 1, and the buffer spring 805 surrounds the outer wall of the positioning rod 804. The buffer spring 805 is used to provide a buffer zone during the contact process between the guide rail 2 and the movable block 801.
[0038] The overspeed regulator 9 consists of a toothed block, a locking block, a second spring, and a movable rod. The locking block is fixed inside the fixed base 7 and is arranged in a ring.
[0039] The inner side of the brake housing 1 is formed with a movable groove for the wedge brake 3 to move obliquely, and the top of the brake housing 1 is fixed to the bottom of the car.
[0040] In this embodiment, it should be noted that the rotating shaft 10 passes through the two wedge brakes 3 and is staggered with the guide rail 2. The two do not interfere with each other, and the wedge brakes 3 and the rotating shaft 10 can slide horizontally relative to each other.
[0041] When the car descends rapidly, the gear block in the overspeed regulator 9 pops out and locks the buckle fixed to the inner wall of the fixed seat 7, causing the wheel 6 and cable 5 to stop transmitting power. The brake lever 4, fixed to the outer wall of the cable 5, will also stop moving with the movement of the brake housing 1, thus pulling the brake lever 4. The wedge brake 3, eccentrically connected to the brake lever 4, will also move obliquely upwards, gradually approaching the guide rail 2. The movable block 801 near the outer wall of the wedge brake 3 will also approach the guide rail 2. Since the tilt angle of the docking block 802 and the docking groove 803 is the same as the oblique movement angle of the wedge brake 3, the docking block 802 located on the outer wall of the guide rail 2 will also enter the inner cavity of the docking groove 803. The guide rail 2... The wedge brake 3 will also be in a mating state. At this time, the docking block 802 and the docking groove 803 will be fully mated, so that the guide rail 2 and the wedge brake 3 are in a mating state. Under the action of the brake housing 1, the wedge brake 3 continues to move downward and rubs against the guide rail 2. The movable block 801 that is mated with the guide rail 2 will also move upward, so that the movable block 801 moves along the outer wall of the positioning rod 804, thereby giving the buffer spring 805 a squeezing force, providing a buffer force for the relative movement of the guide rail 2 and the wedge brake 3, increasing the buffer zone during the sudden stop process when the car falls, improving safety, and further improving the connection force between the guide rail 2 and the wedge brake 3 through the docking block 802 and the docking groove 803.
[0042] Please refer to this carefully. Figures 1-3There are multiple docking blocks 802, which are evenly distributed on the outer wall of the guide rail 2. The outer walls of the multiple docking blocks 802 are all inclined. The inner side of the wedge brake 3 is formed with a movable groove for the vertical movement of the movable block 801. There are multiple docking grooves 803, which are all inclined on the outer wall of the movable block 801. The inclination angle of the docking blocks 802 and the docking grooves 803 is the same as the oblique movement angle of the wedge brake 3.
[0043] In this embodiment: Under the action of multiple docking blocks 802, the docking groove 803 can dock with the docking block 802 as the wedge brake 3 tilts and moves, thereby further improving the connection force between the guide rail 2 and the wedge brake 3, and preventing the car from continuing to move downward due to insufficient frictional contact between the guide rail 2 and the wedge brake 3.
[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A novel anti-fall elevator, comprising a brake housing (1) fixed under the car, wherein a guide rail (2) fixed in the elevator shaft is provided on the inner side of the brake housing (1), and two wedge-shaped brakes (3) disposed on both sides of the guide rail (2) are slidably installed inside the brake housing (1). A brake rod (4) is connected to the outer wall of the wedge-shaped brake (3) through a rotating shaft (10). A cable (5) that moves synchronously with the brake housing (1) is sleeved in the inner cavity of the brake rod (4). A rotating wheel (6) for positioning the transmission of the cable (5) is sleeved on the outer wall of the cable (5). The rotation of the rotating wheel (6) is mounted on the inner side of a fixed seat (7). An overspeed regulator (9) located in the inner cavity of the fixed seat (7) is fixed on the outer wall of the rotating wheel (6). The elevator is characterized in that... A limiting mechanism (8) is provided on the guide rail (2) and the wedge brake (3); The limiting mechanism (8) includes a limiting unit and a buffer unit; The limiting unit is used to further increase the connection force between the guide rail (2) and the wedge brake (3) during the process of the brake lever (4) pulling the wedge brake (3) close to the guide rail (2); The buffer unit is used to provide a certain buffer space for the contact between the guide rail (2) and the wedge brake (3) during the contact braking process.
2. A new type of fall arrest elevator according to claim 1, characterized in that, The limiting unit includes a movable block (801), a docking block (802), and a docking groove (803); The movable block (801) is vertically slidably installed on the outer wall of the wedge brake (3). The movable block (801) is used to contact the outer wall of the guide rail (2) and brake the movement of the car through the contact friction of the guide rail (2) and the wedge brake (3). The docking block (802) is fixed on the outer wall of the guide rail (2). The docking block (802) is used to cooperate with the docking groove (803) to further increase the connection force between the guide rail (2) and the wedge brake (3), so as to avoid insufficient friction after the guide rail (2) and the wedge brake (3) come into contact, causing the car to continue to descend. The docking groove (803) is formed on the outer wall of the movable block (801), and the docking groove (803) is used to provide guiding space for the docking of the docking block (802).
3. A new type of anti-falling elevator according to claim 1, characterized in that, The buffer unit includes a positioning rod (804) and a buffer spring (805); The positioning rod (804) is fixed to the top of the movable block (801) and extends into the inner cavity of the wedge brake (3). The positioning rod (804) is used to provide guidance for the vertical movement of the movable block (801). The two ends of the buffer spring (805) are respectively engaged with the top outer wall of the movable block (801) and the inner cavity of the brake housing (1), and the buffer spring (805) surrounds the outer wall of the positioning rod (804). The buffer spring (805) is used to provide a buffer zone during the contact process between the guide rail (2) and the movable block (801).
4. A new type of fall arrest elevator according to claim 1, characterized in that, The overspeed regulator (9) consists of a toothed block, a locking block, a second spring, and a movable rod. The locking block is fixed inside the fixed base (7) and is arranged in a ring.
5. A new type of fall arrest elevator according to claim 1, characterized in that, The inner side of the brake housing (1) is formed with a movable groove for the wedge brake (3) to move obliquely, and the top of the brake housing (1) is fixed to the bottom of the car.
6. A new type of fall arrest elevator according to claim 2, characterized in that, The number of docking blocks (802) is set to multiple, and the multiple docking blocks (802) are evenly distributed on the outer wall of the guide rail (2), and the outer wall of the multiple docking blocks (802) is inclined as a whole.
7. A new type of fall arrest elevator according to claim 2, characterized in that, The inner side of the wedge brake (3) is formed with a movable groove for the movable block (801) to move vertically. The number of docking grooves (803) is multiple. The multiple docking grooves (803) are all arranged in an inclined state on the outer wall of the movable block (801), and the inclination angle of the docking block (802) and the docking grooves (803) is the same as the oblique movement angle of the wedge brake (3).