Anti-impact safety buffer device for an elevator car

Abstract

The utility model relates to elevator safety protection technical field, concretely is a kind of anti-impact safety buffer device for elevator car, including support assembly, buffer assembly and tension adjusting assembly, and the top of bearing plate is symmetrically provided with flow guide groove, and the two ends of bearing plate away from flow guide groove are penetrated and are provided with several drain holes, and the side of drain hole is symmetrically provided with sliding slot, the utility model is connected by screw rod and positioning plate screw thread in tension adjusting assembly, and fixed plate can be driven along sliding slot by rotating screw rod, and then the tension of damping and spring is adjusted, the flexible adjustment of the buffering force of buffer assembly is realized.

Description

Technical Field

[0001] This utility model relates to the field of elevator safety protection technology, specifically an anti-impact safety buffer device for elevator cars. Technical Background

[0002] With the continuous acceleration of urbanization, elevators, as an indispensable vertical transportation tool in high-rise buildings, are being used more and more frequently, and people are also demanding more and more stringent safety performance requirements for elevators. In the existing technology, the device disclosed in Chinese Patent Publication No. CN202322791154.4, through the setting of a buffer and shock absorption mechanism, when the car falls, the first buffer component and the second buffer component buffer the vibration, the shock absorption component performs damping and shock absorption, and the bottom of the elevator car is buffered and shock absorbed.

[0003] However, the device lacks good drainage. When water accumulates in the elevator shaft, it tends to pool inside the buffer device, causing corrosion of its components and affecting its normal operation. Furthermore, the device lacks convenient tension adjustment, making it impossible to flexibly adjust the buffering force according to the actual weight of the elevator car, its operating speed, and different usage scenarios. This limits the applicability and practicality of the buffer device.

[0004] Therefore, developing an elevator car anti-impact safety buffer device with drainage function and flexible tension adjustment is of great practical significance. Utility Model Content

[0005] The utility model aims to provide an anti-impact safety buffer device for elevator cars, which effectively buffers the impact force and extends the service life of the elevator car when it falls through the drainage function and the flexible tension adjustment structure design.

[0006] This utility model discloses an anti-impact safety buffer device for elevator cars, comprising a support assembly, a buffer assembly, and a tension adjustment assembly. Two sets of buffer assemblies are symmetrically arranged and assembled on the top of the support assembly, and the tension adjustment assembly is disposed between the two sets of buffer assemblies.

[0007] As a further description of the above technical solution:

[0008] The support assembly includes a support plate, with symmetrical guide grooves on the top of the support plate, and several drainage holes through the two ends of the support plate away from the guide grooves. A sliding groove is symmetrically formed on one side of each drainage hole.

[0009] As a further description of the above technical solution:

[0010] The buffer assembly includes a support plate, connecting rod one, connecting rod two, a buffer plate, a movable block, connecting rod one, connecting rod two, a fixed column, and a limiting block. The support plate is symmetrically arranged on the top of the bearing plate. Connecting rod one is movably connected to one end of the support plate, and connecting rod two is arranged on one side of connecting rod one. Connecting rod one and connecting rod two are arranged in a cross pattern. One end of connecting rod one is connected to the buffer plate through a hinge seat, and a movable block is installed on one end of connecting rod two. The bottom end of the buffer plate has a sliding groove that matches the movable block, and the movable block can slide back and forth along the sliding groove.

[0011] As a further description of the above technical solution:

[0012] Connecting rod 1 is symmetrically and movably connected to one end of connecting rod 1 and connecting rod 2. Connecting rod 2 is movably connected to one end of connecting rod 1. A fixing post is installed through one end of connecting rod 2. A limiting block is provided at one end of the fixing post. A limiting hole adapted to the limiting block is opened at one end of the support plate. The limiting block can be locked into the limiting hole to achieve positioning. The top surface of the buffer plate is provided with anti-slip texture, which is arranged horizontally at equal intervals.

[0013] As a further description of the above technical solution:

[0014] The tension adjustment assembly includes a connecting rod, a guide ring, a housing, a threaded rod, a positioning plate, a fixing plate, a damper, a spring, a guide rod, and a support block. The connecting rod is located at one end of the fixing column, and a guide ring is installed at the end of the connecting rod away from the fixing column. The housing is located at the outer end of the guide ring, and a threaded rod passes through the middle of the guide ring.

[0015] As a further description of the above technical solution:

[0016] One end of the threaded rod passes through the threaded connection positioning plate, and a fixing plate is provided at the end of the threaded rod near the positioning plate. The fixing plate is adapted to the slide groove and can slide along the slide groove. The positioning plate is symmetrically provided with dampers at both ends, and a spring is sleeved on the outer end of the damper.

[0017] As a further description of the above technical solution:

[0018] The bottom of the positioning plate is symmetrically provided with connecting blocks, and a guide rod is provided through the middle of the connecting block. Support blocks are installed at both ends of the guide rod, and the bottom of the support block is fixedly connected to the top of the bearing plate.

[0019] As a further description of the above technical solution:

[0020] The cross-section of the guide channel is an inverted trapezoidal structure, and the width of the channel opening is greater than the width of the channel bottom.

[0021] The present invention has the following advantages: 1. The present invention has a guide groove at the top of the bearing plate, and the cross-section of the guide groove is an inverted trapezoidal structure with the groove opening width being greater than the groove bottom width. This structural design is conducive to quickly guiding the water in the elevator shaft to the drain hole, and then draining the water through the drain hole, thus avoiding the accumulation of water inside the device and causing the parts to rust.

[0022] 2. This utility model enables flexible adjustment of the buffering force of the buffer component. The buffering strength can be adjusted according to the actual load of the elevator car, the rated operating speed, and the elevator installation scenario to ensure that the optimal buffering effect can be achieved under various working conditions. This effectively reduces the impact force when the elevator car is accidentally impacted, and reduces the risk of damage to the car and the personnel and goods inside. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the support component of this utility model;

[0025] Figure 3 This is a schematic diagram of the overall structure of the buffer component of this utility model;

[0026] Figure 4 This is a partial exploded view of the buffer component of this utility model;

[0027] Figure 5 This is an exploded view of the overall structure of the tension adjustment component of this utility model.

[0028] The attached figures are labeled as follows:

[0029] 1. Support assembly; 11. Bearing plate; 12. Guide channel; 13. Drain hole; 14. Slide groove; 2. Buffer assembly; 21. Buffer plate; 22. Support plate; 23. Connecting rod one; 24. Connecting rod two; 25. Movable block; 26. Connecting rod one; 27. Connecting rod two; 28. Fixed column; 29. ​​Limiting block; 3. Tension adjustment assembly; 31. Connecting rod; 32. Guide ring; 33. Housing; 34. Threaded rod; 35. Positioning plate; 36. Damping; 37. Spring; 38. Guide rod; 39. Fixed plate. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0032] 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.

[0033] As attached Figure 1 To be continued Figure 5 The present invention provides an anti-impact safety buffer device for an elevator car, comprising a support assembly 1, a buffer assembly 2, and a tension adjustment assembly 3. Two sets of buffer assemblies 2 are symmetrically arranged and assembled on the top of the support assembly 1, and the tension adjustment assembly 3 is disposed between the two sets of buffer assemblies 2.

[0034] Example 1

[0035] Specifically, in the support component 1, the bearing plate 11 is the basic support component of the entire device, providing an installation and support platform for the buffer component 2 and the tension adjustment component 3, ensuring that the entire device can be placed and operated stably. The guide grooves 12 symmetrically opened at the top of the bearing plate 11 are used to guide the water that may accumulate in the elevator shaft. Since the cross-section of the guide groove 12 is an inverted trapezoidal structure, the width of the groove opening is greater than the width of the groove bottom. This structure can guide the accumulated water to the drain hole 13 more quickly and smoothly.

[0036] Among them, several drainage holes 13 are opened through both ends of the support plate 11 away from the guide channel 12 to drain the water guided by the guide channel 12 in time, so as to avoid water accumulation on the support plate 11 and prevent the device parts from rusting and being damaged due to water accumulation; the sliding grooves 14 symmetrically opened on one side of the drainage holes 13 provide a track for the sliding of the fixed plate 39 in the tension adjustment assembly 3, ensuring that the fixed plate 39 can slide stably and smoothly along the sliding groove 14, thereby realizing the tension adjustment function.

[0037] Specifically, in the buffer assembly 2, the support plate 22 is symmetrically arranged on the top of the bearing plate 11. The function of the support plate 22 is to provide a support point for the connecting rod 23 to rotate stably, thereby providing support for the buffer plate 21. The connecting rod 23 is movably connected to one end of the support plate 22, and its other end is connected to the buffer plate 21 through a hinge seat. The connecting rod 23 plays the role of transmitting force during the buffering process. When the buffer plate 21 is subjected to the impact pressure of the elevator car, the connecting rod 23 can transmit the pressure to the subsequent components, while it can rotate itself to achieve the buffering effect in conjunction with other components.

[0038] Among them, the second link 24, which is arranged on one side of the first link 23, is arranged in a cross shape with the first link 23. The movable block 25 installed at one end of the second link 24 can slide back and forth along the sliding groove at the bottom of the buffer plate 21. The second link 24 and the first link 23 cooperate with each other to form a scissor-like structure. When the buffer plate 21 is subjected to pressure and moves downward, the second link 24 can rotate with the movement of the buffer plate 21. At the same time, the movable block 25 slides in the sliding groove, making the movement of the buffer plate 21 more stable and further improving the buffering effect.

[0039] In addition, the buffer plate 21 is connected to the first connecting rod 23 through a hinge seat, and cooperates with the movable block 25 through a sliding groove. The buffer plate 21 is in direct contact with the elevator car. Its function is to bear the impact pressure brought by the elevator car and transmit the pressure to the first connecting rod 23 and the second connecting rod 24, and then to the entire buffer assembly 2 and the tension adjustment assembly 3 to realize the buffer function. The anti-slip texture on the top surface of the buffer plate 21 can increase the friction between it and the elevator car and prevent the car from sliding.

[0040] Furthermore, in the buffer assembly 2, connecting rod 1 26 is symmetrically and movably connected to one end of connecting rod 1 23 and connecting rod 24. The function of connecting rod 1 26 is to connect connecting rod 1 23 and connecting rod 24, so that connecting rod 1 23 and connecting rod 24 can cooperate with each other and move synchronously during the movement, ensuring the stable operation of the buffer assembly 2. Connecting rod 27 is movably connected to one end of connecting rod 1 26, and a fixed post 28 is provided through one end of connecting rod 27. The function of connecting rod 27 is to transmit the force transmitted from connecting rod 1 26 to the fixed post 28. At the same time, connecting rod 27 can rotate to adapt to the position changes of each component during the buffering process.

[0041] Furthermore, a limiting block 29 is provided at one end of the fixed column 28, and a limiting hole adapted to the limiting block 29 is provided at one end of the support plate 22. The limiting block 29 can be engaged in the limiting hole. Its function is to position the fixed column 28, thereby fixing the positions of the connecting rod 27, connecting rod 26, connecting rod 23 and connecting rod 24, preventing these components from excessive displacement or loosening during operation, and ensuring the stability of the buffer assembly 2 structure.

[0042] Example 2

[0043] Based on Example 1, in order to further achieve precise adjustment of the buffering force according to the actual weight of the elevator car, the running speed and the needs of different usage scenarios, a tension adjustment component is set between the two sets of buffer components.

[0044] Specifically, in the tension adjustment assembly 3, the connecting rod 31 is located at one end of the fixed column 28. The function of the connecting rod 31 is to connect the fixed column 28 and the guide ring 32, and to transfer the force transmitted from the buffer assembly 2 to the guide ring 32, thereby realizing the force transmission between the buffer assembly 2 and the tension adjustment assembly 3. The guide ring 32, which is installed at the end of the connecting rod 31 away from the fixed column 28, has a housing 33 at its outer end. A threaded rod 34 passes through the middle of the guide ring 32. The function of the guide ring 32 is to provide support and guidance for the threaded rod 34, ensuring that the threaded rod 34 can rotate stably within the guide ring 32. At the same time, the housing 33 protects the guide ring 32 and the threaded rod 34, preventing external dust, impurities, etc. from entering and affecting the operation of the components.

[0045] One end of the threaded rod 34 passes through the threaded connection to the positioning plate 35. A fixed plate 39 is provided at the end of the threaded rod 34 near the positioning plate 35. The fixed plate 39 is adapted to the slide groove 14 and can slide along the slide groove 14. The function of the threaded rod 34 is to drive the fixed plate 39 to slide along the slide groove 14 by rotating, thereby pushing the positioning plate 35 to move and realize the tension adjustment. The threaded connection means that the rotation of the threaded rod 34 can be accurately converted into the linear movement of the positioning plate 35, ensuring the accuracy of tension adjustment. The positioning plate 35 is symmetrically provided with dampers 36 at both ends. A spring 37 is sleeved on the outer end of the damper 36. The function of the damper 36 and the spring 37 is to absorb impact energy. When the positioning plate 35 is moved by pressure, the spring 37 will deform and the damper 36 will generate damping force. The two work together to consume impact energy and achieve a buffering effect. In addition, the spring 37 can also push the positioning plate 35 to reset after the buffering is completed, ensuring that the device can be reused.

[0046] In addition, in the tension adjustment assembly 3, there are symmetrical connecting blocks at the bottom of the positioning plate 35, and a guide rod 38 is provided through the middle of the connecting block. Support blocks are installed at both ends of the guide rod 38. The bottom end of the support block is fixedly connected to the top end of the bearing plate 11. The function of the guide rod 38 is to provide guidance for the movement of the positioning plate 35, so as to ensure that the positioning plate 35 can move smoothly along the axis of the guide rod 38 when it is pushed by the threaded rod 34 or moved by the spring 37, and to avoid the positioning plate 35 from deviating or shaking. The support block provides fixed support for the guide rod 38, ensuring the stable installation of the guide rod 38, and thus ensuring the stability of the movement of the positioning plate 35.

[0047] It should also be noted that the elevator car in this application can be a residential elevator car, a commercial office building elevator car, an industrial freight elevator car, etc. Figure 1 In this embodiment, a residential elevator car is used as an example for description. Of course, other types of elevator cars can also adopt a similar structure, which will not be repeated hereafter.

[0048] Understandable, Figure 1 The images only schematically illustrate some of the components included in the shock-absorbing safety buffer device. The actual shape, size, location, and construction of these components are not subject to change. Figure 1 Due to limitations, impact-resistant safety buffer devices can also include, compared to... Figure 1 More or fewer parts.

[0049] In actual use, when the elevator car is subjected to an unexpected impact and hits the buffer device downwards, the elevator car first comes into contact with the buffer plate 21 in the buffer assembly 2. Since the top surface of the buffer plate 21 is provided with anti-slip texture, it can effectively increase the friction between the elevator car and the buffer plate 21, prevent the elevator car from sliding on the buffer plate 21, and ensure the initial stability of the buffering process.

[0050] The elevator car applies impact pressure to the buffer plate 21, causing it to move downwards. The buffer plate 21 is connected to connecting rod 23 via a hinged joint. Simultaneously, the sliding groove at the bottom of the buffer plate 21 engages with the movable block 25 at one end of connecting rod 24. Therefore, as the buffer plate 21 moves downwards, it causes connecting rod 23 to rotate around its connection point with the support plate 22, and simultaneously causes the movable block 25 at one end of connecting rod 24 to slide horizontally within the sliding groove. This causes connecting rod 24 to also rotate around its corresponding connection point. Since connecting rods 23 and 24 are arranged in a crisscross pattern and rotate in opposite directions, they form a scissor-like motion. This motion converts part of the vertical impact pressure on the buffer plate 21 into a horizontal force, which is then transmitted to connecting rod 26 via connecting rods 23 and 24.

[0051] When the connecting rod 26 is subjected to force, it will transmit the force to the connecting rod 27 that is movably connected to it. The connecting rod 27 will then transmit the force to the fixed post 28 that is installed through one end. The limiting block 29 at one end of the fixed post 28 is engaged in the limiting hole of the support plate 22, which plays a positioning role for the fixed post 28, preventing the fixed post 28 from displacing excessively when subjected to force, and ensuring that the force can be stably transmitted to the connecting rod 31 installed at one end of the fixed post 28.

[0052] The connecting rod 31 transmits force to the guide ring 32 in the tension adjustment assembly 3. A threaded rod 34 passes through the middle of the guide ring 32. The guide ring 32 supports and guides the threaded rod 34, allowing the force to be transmitted to the threaded rod 34. One end of the threaded rod 34 passes through the threaded connection positioning plate 35. A fixing plate 39 is provided at the end of the threaded rod 34 near the positioning plate 35. The fixing plate 39 is adapted to the slide groove 14 on the bearing plate 11. Therefore, when the threaded rod 34 is subjected to force, it will drive the fixing plate 39 to slide along the slide groove 14, thereby pushing the positioning plate 35 to move.

[0053] Tension adjustment is achieved by adjusting the threaded rod 34 to move the positioning plate 35, thereby changing the tension of the damper 36 and the spring 37. When the positioning plate 35 moves, it compresses or stretches the spring 37. At the same time, the damper 36 generates a damping force during the movement of the positioning plate 35. The elastic deformation of the spring 37 and the damping force of the damper 36 work together to absorb and dissipate impact energy, thus achieving a buffering effect. By adjusting the rotation of the threaded rod 34, the position of the positioning plate 35 can be precisely controlled, thereby adjusting the tension of the spring 37 and the damping force of the damper 36 to adapt to different impact forces and ensure optimal buffering effect.

[0054] During the movement of the positioning plate 35, a guide rod 38 is provided through the middle of the connecting block symmetrically provided at the bottom of the positioning plate 35. The two ends of the guide rod 38 are fixedly connected to the bearing plate 11 through the support block. The guide rod 38 guides the movement of the positioning plate 35, ensuring that the positioning plate 35 can move smoothly along the axial direction of the guide rod 38, avoiding the positioning plate 35 from shifting or shaking, and ensuring that the tension adjustment component 3 can stably play a buffering role.

[0055] Once the impact pressure on the elevator car disappears, the compressed spring 37 releases its elastic potential energy, pushing the positioning plate 35 to move in the opposite direction. The positioning plate 35 then drives the threaded rod 34, the fixed plate 39, the connecting rod 31, the fixed column 28, the second connecting rod 27, the first connecting rod 26, the first connecting rod 23, the second connecting rod 24, and the buffer plate 21 to reset in sequence, so that the device returns to its initial state and can play a buffering and shock-absorbing role again when an impact occurs next time.

[0056] In addition, if water accumulates in the elevator shaft during the operation of the device, the water will fall onto the support plate 11. The guide grooves 12 symmetrically opened at the top of the support plate 11 will guide the water to the drain hole 13. Since the cross-section of the guide groove 12 is an inverted trapezoidal structure and the width of the groove opening is greater than the width of the groove bottom, it can quickly and smoothly guide the water to the drain hole 13. The water is then discharged out of the device through the drain hole 13, which prevents the water from accumulating inside the device and causing the parts to rust, and ensures that the device can work stably for a long time.

[0057] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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.

Claims

1. An anti-impact safety buffer device for elevator cars, characterized in that, include: The support assembly (1), the buffer assembly (2) and the tension adjustment assembly (3) are provided. Two sets of buffer assemblies (2) are symmetrically arranged and assembled on the top of the support assembly (1). The tension adjustment assembly (3) is arranged between the two sets of buffer assemblies (2). The support assembly (1) includes a support plate (11), a guide groove (12) is symmetrically opened at the top of the support plate (11), and a number of drainage holes (13) are opened through both ends of the support plate (11) away from the guide groove (12). A sliding groove (14) is symmetrically opened on one side of the drainage hole (13).

2. The anti-impact safety buffer device for an elevator car according to claim 1, characterized in that: The buffer assembly (2) includes a support plate (22), which is symmetrically arranged on the top of the bearing plate (11). One end of the support plate (22) is movably connected to a connecting rod (23), and a connecting rod (24) is arranged on one side of the connecting rod (23). The connecting rod (23) and the connecting rod (24) are arranged in a cross shape. One end of the connecting rod (23) is connected to a buffer plate (21) through a hinge seat, and a movable block (25) is installed on one end of the connecting rod (24). The bottom end of the buffer plate (21) is provided with a sliding groove that matches the movable block (25), and the movable block (25) can slide back and forth along the sliding groove.

3. The anti-impact safety buffer device for an elevator car according to claim 2, characterized in that: The buffer assembly (2) also includes a connecting rod (26), which is symmetrically and movably connected to one end of the connecting rod (23) and the connecting rod (24). One end of the connecting rod (26) is movably connected to the connecting rod (27), and one end of the connecting rod (27) is provided with a fixing post (28). One end of the fixing post (28) is provided with a limiting block (29), and one end of the support plate (22) is provided with a limiting hole that matches the limiting block (29). The limiting block (29) can be engaged in the limiting hole to achieve positioning.

4. The anti-impact safety buffer device for an elevator car according to claim 3, characterized in that: The tension adjustment assembly (3) includes a connecting rod (31), which is located at one end of the fixed column (28). A guide ring (32) is installed at the end of the connecting rod (31) away from the fixed column (28). A housing (33) is provided at the outer end of the guide ring (32). A threaded rod (34) is provided in the middle of the guide ring (32). One end of the threaded rod (34) passes through the threaded connection positioning plate (35). A fixing plate (39) is provided at the end of the threaded rod (34) near the positioning plate (35). The fixing plate (39) is adapted to the slide groove (14) and can slide along the slide groove (14). The positioning plate (35) is symmetrically provided with dampers (36) at both ends. A spring (37) is sleeved on the outer end of the damper (36).

5. The anti-impact safety buffer device for an elevator car according to claim 4, characterized in that: The bottom of the positioning plate (35) is symmetrically provided with connecting blocks, and a guide rod (38) is provided through the middle of the connecting block. Support blocks are installed at both ends of the guide rod (38), and the bottom end of the support block is fixedly connected to the top end of the bearing plate (11).

6. The anti-impact safety buffer device for an elevator car according to claim 5, characterized in that: The top surface of the buffer plate (21) is provided with anti-slip texture, which is arranged horizontally at equal intervals.

7. The anti-impact safety buffer device for an elevator car according to claim 6, characterized in that: The cross-section of the guide channel (12) is an inverted trapezoidal structure, and the width of the channel opening of the guide channel (12) is greater than the width of the channel bottom.

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