Gear device for an elevator

Abstract

The utility model discloses a gear transmission device for elevator relates to elevator technical field, installs on the door sill of car, is used for enlarging elevator car door door machine system power. It includes transmission amplification subassembly, trigger linkage, reset piece and sound attenuation limiting piece, transmission amplification subassembly contains transmission mounting bracket, swing bar, output force arm and multistage gear group, and swing bar is equipped with swing bar gyro wheel, and trigger linkage is semicircle linkage mechanism. When car door opens to near end, semicircle linkage mechanism pushes swing bar gyro wheel, and swing bar drives multistage gear group (including primary, secondary pinion and gear) enlarge power, and through output force arm transmission to power transmission assembly, after car door closes, reset piece drives swing bar reset, and sound attenuation part eliminates the collision noise. The device power amplification is stable, and the linkage is strong, and reset is reliable, and the noise is low, and the structure is compact, and adapts elevator door machine system, and promotes the operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a gear transmission device installed on the upper sill of an elevator car door, used to amplify and transmit the power of the elevator car door operator system, and is applicable to elevator auxiliary equipment that requires power amplification through mechanical transmission. Background Technology

[0002] In elevator auxiliary equipment, some actuators (such as the rail clamping assembly of the car floating suppression device) require significant driving force, while the output power of the elevator car door operator system is limited, and direct drive can easily lead to insufficient power. Existing solutions mostly use direct motor drive or complex hydraulic transmission, which have problems such as structural redundancy, reliance on additional power sources, and limited installation space.

[0003] While traditional gear transmission devices can amplify power, they have the following drawbacks: First, the triggering structure is poorly compatible with the elevator door operator system, and transmission failure is easily caused by errors in door operator operation; second, the gear set transmission efficiency is low, and multi-stage transmission is prone to cumulative errors; third, the reset mechanism is not stable enough, and reset is easily caused by vibration; fourth, gear meshing and component reset are prone to generating noise during operation, affecting the passenger experience.

[0004] Therefore, there is an urgent need for a gear transmission device that is compatible with elevator door operator systems, has stable power amplification, reliable reset, and low noise. Utility Model Content

[0005] The present invention aims to overcome the deficiencies of the existing technology and provide a gear transmission device for elevators, solving the following problems:

[0006] The elevator door operator system has insufficient output power and cannot directly drive the high-load actuator;

[0007] The poor linkage between the transmission device and the gantry system makes the transmission prone to failure due to errors in the gantry's movement.

[0008] Multi-stage transmission has low efficiency and insufficient stability of the reset mechanism;

[0009] The noise level during operation is high, affecting the passenger experience.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0011] An elevator gear transmission device includes a gear transmission device installed on the upper sill of the car door. The gear transmission device includes a transmission amplification component for amplifying power, a trigger linkage component for triggering the action of the triggering device, a reset component for resetting the drive device, and a silencing and limiting component for silencing and limiting. The trigger linkage component is linked and cooperates with the elevator car door operator system. The transmission amplification component is connected to the trigger linkage component and the power transmission component respectively.

[0012] Furthermore, the transmission amplification assembly includes a transmission mounting frame, a rocker arm, an output lever arm, and a multi-stage gear set rotatably disposed within the transmission mounting frame. One end of the rocker arm engages with the trigger linkage, and the other end is drivenly connected to the input end of the multi-stage gear set. The output end of the multi-stage gear set is drivenly connected to the output lever arm, which is used to connect the power transmission assembly. The free end of the rocker arm is provided with a rocker arm roller that rolls with the trigger linkage.

[0013] Furthermore, the multi-stage gear set includes a first-stage pinion and a first-stage large gear, and a second-stage pinion and a second-stage large gear that mesh and drive in sequence. The first-stage pinion is coaxially connected to the rocker arm, and the first-stage large gear is coaxially connected to the second-stage pinion. The output end of the second-stage large gear forms the power output end of the transmission amplification component. The first-stage pinion and the second-stage pinion have the same structure and size, and the first-stage large gear and the second-stage large gear have the same structure and size.

[0014] Furthermore, the trigger linkage includes a semi-circular linkage mechanism, which is installed on the upper sill of the car door; when the elevator car door operator system opens the car door to near the end of the opening, the semi-circular linkage mechanism contacts the swing arm roller and pushes the swing arm to rotate around its arc surface.

[0015] Furthermore, the noise-reducing limiting component includes a noise-reducing part disposed on the transmission mounting frame. The noise-reducing part is disposed on the contact surface between the noise-reducing limiting component and the rocker arm, so as to eliminate collision noise during the reset process through the noise-reducing part.

[0016] Furthermore, the reset element is disposed on the transmission mounting bracket, and drives the swing arm to reset by providing a reset spring force, and the reset spring force can ensure that the swing arm resets to the initial working position.

[0017] Compared with the prior art, the gear transmission device for elevators of this utility model has the following advantages:

[0018] The two-stage symmetrical gear transmission ensures stable power amplification and solves the problem of insufficient output force in the door operator system; the semi-circular linkage mechanism and the rolling cooperation of the swing arm roller adapt to the car door opening action and reduce transmission failure caused by door operator error; the spring force of the reset component ensures that the swing arm returns to the initial position, ensuring the stability of the device's cyclic operation; the silencing component effectively eliminates reset collision noise and improves the quietness of elevator operation; all components are integrated into the transmission mounting frame, adapting to the installation space on the car door sill, facilitating installation and maintenance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is an overall layout diagram of the passive elevator float suppression system of this utility model for unilateral movement.

[0021] Figure 2 is an overall layout diagram of the bilateral action of the passive elevator float suppression system of this utility model;

[0022] Figure 3 is Figure 1 A magnified view of a portion of the image;

[0023] Figure 4 is a schematic diagram of the gear transmission device of the passive elevator float suppression system of this utility model.

[0024] Figure 5 is a schematic diagram of the gear transmission device of the passive elevator float suppression system of this utility model from another perspective.

[0025] Figure 6 is a diagram showing the triggering state of the gear transmission device of the passive elevator float suppression system of this utility model.

[0026] Figure 7 shows the meshing structure of the multi-stage gear set of the passive elevator float suppression system of this utility model.

[0027] Figure 8 shows the structure of the rail clamping actuator of the passive elevator float suppression system of this utility model.

[0028] Figure Descriptions: 1. Car door upper sill; 2. Rail clamping actuator; 3. Power transmission assembly; 4. Gear transmission device; 5. Transmission amplification assembly; 6. Trigger linkage component; 7. Reset component; 8. Silencing limit component; 9. Transmission mounting bracket; 10. Rocker arm; 11. Output lever arm; 12. First-stage pinion; 13. First-stage large gear; 14. Second-stage pinion; 15. Second-stage large gear; 31. Linkage wire; 32. Wire sleeve. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] 1. System overall composition, refer to Figure 1-8 :

[0034] The system includes a rail clamping actuator 2 for suppressing car floating, a power transmission assembly 3 for transmitting power, a gear transmission device 4 for amplifying power, and an elevator car door operator system for providing initial power to the system; the assembly and connection relationships of the components are as follows:

[0035] Rail clamping actuator 2: It is mounted on the top of the elevator car and can be installed on one or both sides of the car top according to the elevator specifications. The specific installation position is at the car top guardrail or below the guide shoe. Its input end is connected to the output end of the power transmission component 3. Its core function is to clamp the elevator guide rail and convert the floating kinetic energy of the car into friction.

[0036] Power transmission component 3: connects the rail clamping actuator 2 and the gear transmission device 4 to maintain a state of no-delay power transmission. It includes a linkage steel wire 31, and a steel wire sleeve 32 can be added on the outside of the linkage steel wire 31 as needed (to protect the linkage steel wire and prevent wear). The linkage steel wire 31 can be connected in a "one-to-one" or "one-to-two" manner. When connected in a "one-to-one" manner, one rail clamping actuator 2 is installed to achieve single-sided car floating suppression. When connected in a "one-to-two" manner, two rail clamping actuators 2 are installed to achieve double-sided car floating suppression.

[0037] Gear transmission device 4: Installed on the upper sill of the car door 1, it is the core of the system's power amplification, including a transmission amplification component 5 for realizing power amplification, a trigger linkage component 6 for triggering the action of the triggering device, a reset component 7 for resetting the drive device, and a noise reduction and limiting component 8 for noise reduction and limiting.

[0038] Elevator car door operator system: Provides initial power to the system without additional modifications. It triggers gear transmission device 4 by opening the car door, without needing to read the elevator running sequence program.

[0039] 2. Detailed structure of gear transmission device 4

[0040] The gear transmission device 4 is the key to achieving "small power amplification". The structure and function of each component are as follows:

[0041] The transmission amplification assembly 5 includes a transmission mounting frame 9, a rocker arm 10, an output lever arm 11, and a multi-stage gear set rotatably disposed within the transmission mounting frame 9. One end of the rocker arm 10 is equipped with a rocker arm roller (for rolling engagement with the trigger linkage 6), and the other end is connected to the input end of the multi-stage gear set. The output end of the multi-stage gear set is connected to the output lever arm 11, which is used to connect the linkage steel wire 31 of the power transmission assembly 3.

[0042] Multi-stage gear set: including a first-stage pinion 12, a first-stage large gear 13, a second-stage pinion 14, and a second-stage large gear 15 that mesh and drive in sequence; the first-stage pinion 12 is coaxially connected to the rocker arm 10, the first-stage large gear 13 is coaxially connected to the second-stage pinion 14, and the output end of the second-stage large gear 15 forms the power output end of the transmission amplification component 5; and the first-stage pinion 12 and the second-stage pinion 14 have the same structure and dimensions, and the first-stage large gear 13 and the second-stage large gear 15 have the same structure and dimensions, achieving power amplification through the gear meshing ratio and the lever action of the rocker arm;

[0043] Trigger linkage 6: Specifically, it is a semi-circular linkage mechanism, installed on the upper sill 1 of the car door. When the elevator car door operator system opens the car door to near the end of the opening (preset position), the semi-circular linkage mechanism contacts the swing rod roller at the end of the swing rod 10 and pushes the swing rod 10 to rotate around its fixed point along the arc surface of the semi-circular linkage mechanism.

[0044] Reset component 7: It is installed on the transmission mounting bracket 9 and drives the swing arm 10 to reset by providing a reset spring force (such as a spring pin). The magnitude of the reset spring force can ensure that the swing arm 10 is completely reset to the initial working position without affecting the normal closing action of the car door.

[0045] Noise-reducing limiting component 8: It is installed on the transmission mounting frame 9 and includes a noise-reducing component (such as an elastic rubber component). The noise-reducing component is located on the contact surface between the noise-reducing limiting component 8 and the rocker arm 10. It can eliminate the noise generated by the collision between the rocker arm 10 and the noise-reducing limiting component 8 during the reset process, and at the same time fix the position of the rocker arm 10 after reset.

[0046] 3. System Workflow

[0047] Triggering phase: After the elevator levels, the elevator car door operator system starts and opens the car door; when the car door moves to near the end of the opening, the semi-circular linkage mechanism (trigger linkage 6) at the upper sill of the car door contacts the swing arm roller of the swing arm 10, pushing the swing arm 10 to rotate around the fixed point;

[0048] Power amplification stage: The rotation of the swing arm 10 drives the coaxially connected primary pinion 12 to rotate, the primary pinion 12 drives the meshing primary gear 13, the primary gear 13 drives the coaxial secondary pinion 14, and the secondary pinion 14 drives the meshing secondary gear 15. In this process, the lever action of the swing arm 10 and the transmission action of the multi-stage gear set work together to amplify the initial output force of the car door operator system to the force required to meet the rail clamping requirements, and finally drive the output force arm 11 to rotate through the secondary gear 15.

[0049] Floating suppression stage: The output lever arm 11 transmits the amplified power to the rail clamping actuator 2 through the taut linkage steel wire 31 (power transmission component 3). The rail clamping actuator 2 clamps the elevator guide rail, converting the kinetic energy of the car's vertical floating into frictional force, quickly suppressing the car's floating. If it is a double-sided setup, the two rail clamping actuators 2 clamp the guide rails on both sides simultaneously, further enhancing the suppression effect.

[0050] Reset Phase: After passengers get on and off the elevator, the car door operator system drives the car door to close. As the car door closes, the semi-circular linkage mechanism separates from the swing arm roller. The reset spring force provided by the reset component 7 pushes the swing arm 10 to rotate in the opposite direction to reset. The swing arm 10 drives the multi-stage gear set and the output force arm 11 to reset synchronously. When the swing arm 10 resets to the initial position, the noise reduction component of the noise reduction limit component 8 contacts the swing arm 10, fixes the position of the swing arm and eliminates collision noise. The system returns to the initial state and waits for the next trigger.

[0051] To make the technical solution of this utility model clearer and easier to understand, the system will be described in detail below with reference to specific embodiments:

[0052] Example 1: A unilateral floating suppression system for a 10-story residential elevator

[0053] Component selection and assembly:

[0054] Rail clamping actuator 2: Select a single set of rail clamping components that are compatible with the specifications of the elevator guide rails, and install them below the guide shoe on the side of the car top near the car door. Its power input end is connected to the output force arm 11 of the gear transmission device 4 through the linkage steel wire 31.

[0055] Power transmission component 3: A stainless steel linkage wire 31 with a diameter of 2mm is used, and a plastic wire sleeve 32 is installed on the section where the linkage wire 31 passes through the metal frame of the car top to avoid wire wear.

[0056] Gear transmission device 4: The transmission mounting bracket 9 is made of aluminum alloy (lightweight and meets the strength requirements), the multi-stage gear set uses 45# steel gears (the first and second stage pinions have the same structure, and the first and second stage large gears have the same structure), the length of the rocker arm 10 is adapted to the installation space of the car door sill 1, the reset part 7 uses a torsion spring (the elasticity is adjustable), and the noise reduction part of the noise reduction limit part 8 is a nitrile rubber pad; the gear transmission device 4 is fixed as a whole to the car door sill 1 near the door operator belt to ensure that the semi-circular linkage mechanism can contact the rocker arm roller with the movement of the car door;

[0057] System debugging and operation:

[0058] Adjust the tension of the linkage steel wire 31 to ensure that there is no delay in power transmission; adjust the elasticity of the reset component 7 so that the swing arm 10 can be stably maintained in the initial position after reset, without affecting the opening and closing of the car door.

[0059] Operational test: After the elevator is leveled, when the car door is opened to near the end, the semi-circular linkage mechanism pushes the swing arm 10, the multi-stage gear set amplifies the power, and the rail clamping actuator 2 clamps the guide rail, reducing the car's floating amplitude from the original 5mm to within 0.5mm; after the car door is closed, the system quickly resets, with no obvious noise, and does not affect the normal opening and closing stroke of the car door.

[0060] Example 2: A bilateral floating suppression system for an elevator in a 30-story office building

[0061] The difference from Example 1 is as follows:

[0062] Rail clamping actuator 2: Two sets of rail clamping assemblies of the same specifications are selected and installed below the guide shoes on both sides of the car top;

[0063] Power transmission component 3: adopts "one-to-two" linkage steel wire 31, that is, the output force arm 11 is connected to a main steel wire, and the main steel wire is divided into two branch steel wires through the guide wheel on the car top, which are respectively connected to the clamping rail actuator 2 on both sides;

[0064] Operational effect: The double-sided clamping actuator 2 clamps the guide rails on both sides simultaneously, reducing the car floating amplitude from the original 8mm to less than 0.3mm. The suppression effect is better than that of a single-sided setting, making it more suitable for large floating scenarios in high-rise elevators.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

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