Elevator speed limiter

Abstract

The elevator speed limiter comprises a longitudinal frame, a stable lifting mechanism, a speed limiting clamping mechanism and a speed limiting auxiliary mechanism, the stable lifting mechanism comprises a driving wheel, a driven wheel, a belt, a lead screw, a threaded block and an elevator plate, and the speed limiting clamping mechanism comprises a speed reducing pipe, a slope plate, a moving block, a spring clamping plate, an inner moving ring and a moving ring. According to the speed limiting clamping mechanism, through the inclined sliding design of a slope plate and a moving block on the inner wall of a speed reducing pipe and cooperation of an inner moving ring and a moving ring, step-by-step clamping adjustment of a spring clamping plate on a lead screw is achieved, the speed limiting auxiliary mechanism controls movement of the moving ring and the inner moving ring through rotation of a rotating ring, an upper jacking rotating plate, a jacked rotating plate and other components, and the speed limiting effect is achieved. The clamping spring plate can dynamically adjust the clamping force, and due to the design, the device can adjust the clamping process in real time according to the speed change of the elevator.

Description

Technical Field

[0001] This utility model relates to the field of speed limiter technology, and more specifically, to an elevator speed limiter. Background Technology

[0002] An elevator speed governor is an elevator safety device designed to monitor the elevator's operating speed and trigger the safety system when the elevator exceeds the speed limit, thereby controlling the elevator's operating speed within a safe range and protecting the safety of passengers and equipment. It is a key component of elevator safety protection systems and is widely used in passenger elevators and freight elevators.

[0003] During the ascent and descent of some elevators, the elevator movement is often not smooth, and swaying or vibration may occur during operation. Furthermore, the clamping mechanism in the speed governor cannot achieve step-by-step clamping adjustment when the elevator overspeeds, resulting in inaccurate control of the clamping force. This not only affects the speed limiting effect but may also damage the equipment or fail to brake effectively due to excessive or insufficient clamping force. The adjustment of the clamping force relies on a single mechanical action and cannot be dynamically adjusted according to changes in elevator speed, resulting in unstable clamping effect. Finally, existing speed governors lack a convenient step-by-step adjustment mechanism for clamping force control, making operation complex and response time long. This may prevent the rapid and effective response in emergency situations, increasing safety risks. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides an elevator speed limiter to solve the technical problems mentioned in the background art, such as the elevator's unstable lifting and lowering, and the inconvenience of step-by-step clamping and adjustment of the clamping plates in the reducer.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an elevator speed limiter, comprising a longitudinal frame, a stabilizing lifting mechanism, a speed-limiting clamping mechanism, and a speed-limiting auxiliary mechanism. The stabilizing lifting mechanism includes a driving wheel, a driven wheel, a belt, a lead screw, a threaded block, and an elevator plate. The driving wheel and the driven wheel are installed at the top end of the longitudinal frame. The belt connects the driving wheel and the driven wheel. The lead screw is rotatably limited and installed on the side of the longitudinal frame. The driven wheel is installed at one end of the lead screw. The threaded block is threadedly connected to the lead screw. An electric push plate is fixedly installed on the side of the threaded block. The speed-limiting clamping mechanism includes a deceleration tube, a slope plate, a moving block, a clamping spring plate, an inner moving ring, and a moving ring. The deceleration tube is installed at the bottom end of the threaded block and is fitted onto the lead screw. The slope plate is installed on the inner wall of the deceleration tube. The moving block is slidably installed on the slope plate. The clamping spring plate is installed on the side of the moving block. The inner moving ring and the moving ring are directionally slidably arranged on the inner and outer walls of the deceleration tube, and the top end of the inner moving ring is slidably connected to the bottom end of the moving block.

[0008] The present invention is further configured such that the speed limiting auxiliary mechanism includes a top rotating plate, an upper rotating plate, a rotating ring, a rotating block, a centripetal block, a tensioning spring, and a connecting plate. The top rotating plate is installed at the bottom end of the moving ring. The rotating ring is rotatably mounted on the outer wall of the deceleration tube. The upper rotating plate is installed at the top end of the rotating ring. The rotating ring causes the upper rotating plate to push the top rotating plate, causing the moving ring to move in a specific direction. This causes the inner moving ring to push the moving block to move, causing the clamping spring plate to clamp the lead screw step by step. The connecting plate is fixedly installed on the outer wall of the deceleration tube. Multiple sets of centripetal blocks are slidably mounted centripetally on the connecting plate. The tensioning spring is installed between adjacent centripetal blocks. The rotating block is installed at the bottom end of the rotating ring. The centripetal block presses against the outer wall of the rotating block, causing the rotating ring to rotate stably.

[0009] The present invention is further configured such that a drive motor is installed at the top end of the longitudinal frame, and the drive wheel is installed at the output end of the drive motor. The drive motor is directly connected to the drive wheel, and the use of the motor provides a stable power source.

[0010] The present invention is further configured such that a guide wheel assembly is installed on the side of the threaded block, and a guide rail is installed on the side of the longitudinal frame. The guide wheel assembly is slidably guided on the guide rail. The sliding guiding function of the guide wheel assembly on the guide rail ensures that the threaded block maintains the linearity and stability of its movement when it is raised and lowered, prevents deviation and tilting, and further improves the accuracy and safety of the device operation.

[0011] The present invention is further configured such that the connecting plate is fixedly installed at the bottom end of the threaded block, and a centripetal rail is installed at the top end of the connecting plate, and the centripetal block is slidably installed on the centripetal rail. The connection plate facilitates the fixing of the deceleration tube.

[0012] The present invention is further configured such that an outer fixing plate is fixedly installed on the outer wall of the deceleration tube, and a reset spring is installed between the outer fixing plate and the moving ring. The outer fixing plate and the reset spring are configured to promptly reset to the initial state after the clamping mechanism is released, thus preparing for the next use.

[0013] The present invention is further configured such that an outer rotating rod is installed at the outer end of the rotating ring, and rotating the outer rotating rod causes the rotating ring to rotate in a limited position. The outer rotating rod can be operated by an external mechanical connection to enable the rotating ring to rotate in a limited position. This design enhances the controllability of the speed limiter.

[0014] The present invention is further provided that a fixing plate is installed at the bottom end of the longitudinal frame, and the device is fixed in the required position by fixing the fixing plate. The setting of the fixing plate facilitates the installation of the device and can reliably fix the entire speed limiter in the predetermined position, thereby enhancing the stability and adaptability of the device.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides an elevator speed governor, which has the following advantages:

[0017] The speed limiting clamping mechanism in this utility model achieves step-by-step clamping adjustment of the spring plate on the lead screw through the inclined sliding design of the slope plate on the inner wall of the deceleration tube and the moving block, as well as the cooperation of the inner moving ring and the moving ring. This design allows the clamping force to be gradually adjusted according to actual needs, avoiding the problem of excessive or insufficient clamping force in traditional speed limiters, and improving the accuracy and safety of clamping.

[0018] In this utility model, the speed limiting auxiliary mechanism utilizes components such as a rotating ring, an upper rotating plate, and a lower rotating plate. The rotation of the rotating ring controls the movement of the moving ring and the inner moving ring, enabling the clamping spring plate to dynamically adjust the clamping force. This design allows the device to adjust the clamping process in real time according to changes in elevator speed, ensuring the efficiency and reliability of the speed limiting function and adapting to various operating scenarios.

[0019] The design of the outer fixing plate and the reset spring in the speed limiting auxiliary mechanism of this utility model can quickly return to the initial state after the clamping mechanism is released, preparing for the next operation. This reset design reduces the complexity of manual operation, improves the efficiency of the speed limiter, and extends the service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model;

[0022] Figure 3This is a schematic diagram of the structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of this utility model.

[0025] In the diagram: 1. Longitudinal frame; 2. Driving wheel; 3. Driven wheel; 4. Belt; 5. Lead screw; 6. Threaded block; 7. Elevator plate; 8. Reduction tube; 9. Slope plate; 10. Moving block; 11. Clamping spring plate; 12. Inner moving ring; 13. Moving ring; 14. Top rotating plate; 15. Top rotating plate; 16. Rotating ring; 17. Rotating block; 18. Centripetal block; 19. Tensioning spring; 20. Connecting plate; 21. Drive motor; 22. Guide wheel assembly; 23. Guide rail; 24. Centripetal rail; 25. Outer fixing plate; 26. Return spring; 27. Outer rotating rod; 28. Fixed plate. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5An elevator speed governor includes a longitudinal frame 1, a stabilizing lifting mechanism, a speed-limiting clamping mechanism, and a speed-limiting auxiliary mechanism. The stabilizing lifting mechanism includes a driving wheel 2, a driven wheel 3, a belt 4, a lead screw 5, a threaded block 6, and an elevator plate 7. The driving wheel 2 and the driven wheel 3 are installed at the top end of the longitudinal frame 1. The belt 4 connects the driving wheel 2 and the driven wheel 3. The lead screw 5 is rotatably limited and installed on the side of the longitudinal frame 1. The driven wheel 3 is installed at one end of the lead screw 5. The threaded block 6 is threadedly connected to the lead screw 5. An electric push plate is fixedly installed on the side of the threaded block 6. The speed-limiting clamping mechanism... The mechanism includes a reduction tube 8, a slope plate 9, a moving block 10, a clamping spring plate 11, an inner moving ring 12, and a moving ring 13. The reduction tube 8 is installed at the bottom end of the threaded block 6 and is fitted onto the lead screw 5. The slope plate 9 is installed on the inner wall of the reduction tube 8. The moving block 10 is slidably installed on the slope plate 9. The clamping spring plate 11 is installed on the side of the moving block 10. The inner moving ring 12 and the moving ring 13 are slidably arranged on the inner and outer walls of the reduction tube 8, and the top end of the inner moving ring 12 is slidably connected to the bottom end of the moving block 10.

[0030] In this embodiment, the drive motor 21 drives the drive wheel 2, which is installed at its output end, to rotate. Through the linkage of the belt 4 and the driven wheel 3, the driven wheel 3 rotates synchronously. The driven wheel 3 is fixedly connected to one end of the lead screw 5. Therefore, when the driven wheel 3 rotates, it drives the lead screw 5 to rotate. The threaded block 6 is threadedly connected to the lead screw 5. When the lead screw 5 rotates, the threaded block 6 moves up and down along the lead screw 5 through the threaded transmission principle. The electric push plate, through linkage with the elevator plate 7, converts the up and down movement of the threaded block 6 into the stable up and down movement of the elevator plate 7. To ensure the smooth operation of the threaded block 6 and the electric push plate during up and down movements... During the process, there will be no deviation. The side of the threaded block 6 is equipped with a guide wheel assembly 22, and the guide rail 23 is fixedly installed on the side of the longitudinal frame 1. The guide wheel assembly 22 slides and guides on the guide rail 23, thereby ensuring the operational stability of the device. The rotation of the screw 5 drives the threaded block 6 to move, and the deceleration tube 8 adjusts the movement. Through the movement of the moving ring 13, the inner moving ring 12 moves synchronously. The inner moving ring 12 can push the moving block 10 to slide on the slope plate 9. When the moving block 10 slides, the clamping spring plate 11 is gradually pushed towards the screw 5, thereby applying a step-by-step clamping force to the screw 5 to achieve speed-limiting clamping of the screw 5.

[0031] The speed limiting auxiliary mechanism includes a top rotating plate 14, an upper rotating plate 15, a rotating ring 16, a rotating block 17, a centripetal block 18, a tension spring 19, and a connecting plate 20. The top rotating plate 14 is installed at the bottom end of the moving ring 13. The rotating ring 16 is rotatably mounted on the outer wall of the deceleration tube 8. The upper rotating plate 15 is installed at the top end of the rotating ring 16. The rotating ring 16 causes the upper rotating plate 15 to push the top rotating plate 14, causing the moving ring 13 to move in a direction, causing the inner moving ring 12 to push the moving block 10 to move, and causing the clamping spring plate 11 to clamp the lead screw 5 step by step. The connecting plate 20 is fixedly installed on the outer wall of the deceleration tube 8. Multiple sets of centripetal blocks 18 are slidably mounted on the connecting plate 20. The tension spring 19 is installed between adjacent centripetal blocks 18. The rotating block 17 is installed at the bottom end of the rotating ring 16. The centripetal block 18 presses against the outer wall of the rotating block 17, so that the rotating ring 16 rotates stably.

[0032] In this embodiment, when the rotating ring 16 rotates, the top plate 15 at its top end pushes the receiving plate 14, causing the receiving plate 14 to transmit force to the moving ring 13. The moving ring 13 moves in an orientation under the action of the rotating ring 16, pushing the inner moving ring 12 to move. The inner moving ring 12 further pushes the moving block 10 and the clamping spring plate 11 in the speed limiting clamping mechanism, enhancing the clamping force of the clamping mechanism on the lead screw 5. When the rotating ring 16 rotates, the centripetal block 18 presses against the outer wall of the rotating block 17 to maintain the rotational stability of the rotating ring 16. At the same time, the tightening spring 19 makes the centripetal block 18 always generate a reset pressure on the rotating block 17.

[0033] Please see Figures 1-5 As a supplementary embodiment of an elevator speed limiter for a stabilizing lifting mechanism, a speed limiting clamping mechanism, and a speed limiting auxiliary mechanism: A drive motor 21 is installed at the top end of the longitudinal frame 1, and the drive wheel 2 is installed at the output end of the drive motor 21. A guide wheel assembly 22 is installed on the side of the threaded block 6, and a guide rail 23 is installed on the side of the longitudinal frame 1. The guide wheel assembly 22 is slidably guided on the guide rail 23. A connecting plate 20 is fixedly installed at the bottom end of the threaded block 6, and a centripetal rail 24 is installed at the top end of the connecting plate 20. The centripetal block 18 is slidably installed on the centripetal rail 24. An outer fixing plate 25 is fixedly installed on the outer wall of the deceleration tube 8, and a return spring 26 is installed between the outer fixing plate 25 and the moving ring 13. An outer rotating rod 27 is installed at the outer end of the rotating ring 16, and rotating the outer rotating rod 27 causes the rotating ring 16 to rotate in a limited position. A fixing plate 28 is installed at the bottom end of the longitudinal frame 1, and the device is fixed in the required position by fixing the fixing plate 28.

[0034] More specifically, during normal elevator operation, drive motor 21 drives drive wheel 2, which in turn drives lead screw 5 to rotate. Threaded block 6 moves up and down along lead screw 5, and the elevator platform 7 is stably raised and lowered through electric push plate. The sliding guide between guide wheel assembly 22 and guide rail 23 ensures the smoothness of the entire operation. When the elevator needs to be speed limited, slope plate 9 in deceleration tube 8 drives moving block 10 to slide. Moving block 10 pushes clamping spring plate 11 to clamp lead screw 5 step by step, thereby limiting the speed of the elevator. Rotation of rotating ring 16 causes upper top plate 15 and top plate 14 to push inner moving ring 12 to move, further enhancing the clamping force on lead screw 5. Centripetal block 18 and tensioning spring 19 ensure the stable rotation of rotating ring 16 and the reset capability of the mechanism.

[0035] In summary, during the use or operation of the overall equipment: when the stable lifting mechanism is required, the drive motor 21 drives the active wheel 2 installed at its output end to rotate. Through the linkage of the belt 4 and the driven wheel 3, the driven wheel 3 rotates synchronously. The driven wheel 3 is fixedly connected to one end of the lead screw 5. Therefore, when the driven wheel 3 rotates, it will drive the lead screw 5 to rotate. The threaded block 6 is threadedly connected to the lead screw 5. When the lead screw 5 rotates, the threaded block 6 moves up and down along the lead screw 5 through the thread transmission principle. The electric push plate transmits the motion of the threaded block 6 through linkage with the elevator plate 7, converting the motion of the threaded block 6 into the stable motion of the elevator plate 7. To ensure that the threaded block 6 and the electric push plate do not deviate during the lifting process, a guide wheel assembly 22 is installed on the side of the threaded block 6. The guide rail 23 is fixedly installed on the side of the longitudinal frame 1. The guide wheel assembly 22 slides and guides on the guide rail 23, thereby ensuring the operational stability of the device.

[0036] When the speed-limiting clamping mechanism is in operation, the lead screw 5 rotates, driving the threaded block 6 to move. The deceleration tube 8 adjusts the movement. Through the movement of the moving ring 13, the inner moving ring 12 moves synchronously. The inner moving ring 12 can push the moving block 10 to slide on the slope plate 9. When the moving block 10 slides, the clamping spring plate 11 is gradually pushed towards the lead screw 5, thereby applying a step-by-step clamping force to the lead screw 5 to achieve speed-limiting clamping of the lead screw 5.

[0037] When the speed limiting auxiliary mechanism is required to operate, the speed limiting auxiliary mechanism drives the rotating ring 16 through the outer rotating rod 27. The rotating ring 16 is fixedly installed on the outer wall of the deceleration tube 8. When the rotating ring 16 rotates, the upper rotating plate 15 at its top end pushes the receiving rotating plate 14, so that the receiving rotating plate 14 transmits the force to the moving ring 13. The moving ring 13 moves in a direction under the action of the rotating ring 16, pushing the inner moving ring 12 to move. The inner moving ring 12 further pushes the moving block 10 and the clamping spring plate 11 in the speed limiting clamping mechanism, enhancing the clamping force of the clamping mechanism on the lead screw 5. When the rotating ring 16 rotates, the centripetal block 18 presses against the outer wall of the rotating block 17 to maintain the rotational stability of the rotating ring 16. At the same time, the tightening spring 19 makes the centripetal block 18 always generate a reset pressure on the rotating block 17.

[0038] During normal operation of the elevator, the drive motor 21 drives the drive wheel 2, which in turn drives the lead screw 5 to rotate. The threaded block 6 moves up and down along the lead screw 5, and the elevator platform 7 is stably raised and lowered through the electric push plate. The sliding guide between the guide wheel assembly 22 and the guide rail 23 ensures the smoothness of the entire operation. When the elevator needs to be limited in speed, the slope plate 9 in the deceleration tube 8 drives the moving block 10 to slide. The moving block 10 pushes the clamping spring plate 11 to clamp the lead screw 5 step by step, thereby limiting the speed of the elevator. The rotation of the rotating ring 16 causes the upper top rotating plate 15 and the top rotating plate 14 to push the inner moving ring 12 to move, further enhancing the clamping force on the lead screw 5. The centripetal block 18 and the tensioning spring 19 ensure the stable rotation of the rotating ring 16 and the reset capability of the mechanism.

[0039] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator speed governor, comprising a longitudinal frame (1), a stabilizing lifting mechanism, a speed-limiting clamping mechanism, and a speed-limiting auxiliary mechanism, characterized in that: The stabilizing lifting mechanism includes a drive wheel (2), a driven wheel (3), a belt (4), a lead screw (5), a threaded block (6), and an elevator plate (7). The drive wheel (2) and the driven wheel (3) are installed at the top end of the longitudinal frame (1). The belt (4) connects the drive wheel (2) and the driven wheel (3). The lead screw (5) is installed on the side of the longitudinal frame (1) to limit rotation. The driven wheel (3) is installed at one end of the lead screw (5). The threaded block (6) is threaded onto the lead screw (5). The electric push plate is fixedly installed on the side of the threaded block (6). The speed limiting clamping mechanism includes a reduction tube (8) and a slope plate (9). The moving block (10), the clamping spring plate (11), the inner moving ring (12) and the moving ring (13) are installed at the bottom end of the threaded block (6) and the deceleration tube (8) is fitted on the lead screw (5). The slope plate (9) is installed on the inner wall of the deceleration tube (8). The moving block (10) is slidably installed on the slope plate (9). The clamping spring plate (11) is installed on the side of the moving block (10). The inner moving ring (12) and the moving ring (13) are slidably set on the inner wall and outer wall of the deceleration tube (8), and the top end of the inner moving ring (12) is slidably connected to the bottom end of the moving block (10).

2. The elevator speed governor according to claim 1, characterized in that: The speed limiting auxiliary mechanism includes a top rotating plate (14), an upper top rotating plate (15), a rotating ring (16), a rotating block (17), a centripetal block (18), a tightening spring (19), and a connecting plate (20). The top rotating plate (14) is installed at the bottom end of the moving ring (13). The rotating ring (16) is installed on the outer wall of the deceleration tube (8) with a limiting rotation. The upper top rotating plate (15) is installed at the top end of the rotating ring (16), so that the inner moving ring (12) pushes the moving block (10) to move, so that the clamping spring plate (11) clamps the lead screw (5) step by step. The connecting plate (20) is fixedly installed on the outer wall of the deceleration tube (8). Multiple sets of centripetal blocks (18) are slidably installed on the connecting plate (20). The tightening spring (19) is installed between adjacent centripetal blocks (18). The rotating block (17) is installed at the bottom end of the rotating ring (16).

3. An elevator speed governor according to claim 1, characterized in that: The top end of the longitudinal frame (1) is equipped with a drive motor (21), and the drive wheel (2) is installed at the output end of the drive motor (21).

4. An elevator speed governor according to claim 1, characterized in that: The threaded block (6) is provided with a guide wheel assembly (22) on its side, and the longitudinal frame (1) is provided with a guide rail (23) on its side, and the guide wheel assembly (22) is provided with a sliding guide on the guide rail (23).

5. An elevator speed governor according to claim 2, characterized in that: The connecting plate (20) is fixedly installed at the bottom end of the threaded block (6), and a centripetal rail (24) is installed at the top end of the connecting plate (20), and the centripetal block (18) is slidably installed on the centripetal rail (24).

6. An elevator speed governor according to claim 1, characterized in that: An outer fixing plate (25) is fixedly installed on the outer wall of the deceleration tube (8), and a return spring (26) is installed between the outer fixing plate (25) and the moving ring (13).

7. An elevator speed governor according to claim 2, characterized in that: The outer end of the rotating ring (16) is provided with an outer rotating rod (27), and rotating the outer rotating rod (27) causes the rotating ring (16) to rotate in a limited position.

8. An elevator speed governor according to claim 1, characterized in that: A fixing plate (28) is installed at the bottom end of the longitudinal frame (1), and the device is fixed in the required position by fixing the fixing plate (28).

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