Safe bidirectional home elevator speed governor

Abstract

The utility model aims to provide a safe bidirectional household elevator speed governor which solves the problem of multi-step speed regulation and comprises a shell with the bottom arranged in a suspended mode, a fixing shaft is arranged in the shell, a rotating assembly is rotationally arranged on the fixing shaft, a speed limiting assembly is further rotationally arranged on the shell, and the rotating assembly comprises a rope wheel and a cam which are integrally formed. The cam is arranged on the side face of the rope wheel, and a speed limiting block is arranged on the side face of the cam. The speed limiting assembly comprises a curved plate arranged in a rotating mode, a spring and a limiting claw, the spring and the limiting claw are arranged on the two sides of the curved plate, a pressing wheel is arranged on the curved plate in a rotating mode, and the pressing wheel and the spring are located on the same side. The pressing wheel is attached to the periphery of the cam in a rolling mode. The limiting claw is used for clamping the speed limiting block; the upper end of the spring is connected with the curved plate, and the lower end is connected with the bottom of the shell.

Description

Technical Field

[0001] The utility model relates to the field of elevator safety, in particular to a safe bidirectional home elevator speed limiter. Background Art

[0002] The elevator speed limiter is one of the safety control components in the elevator safety protection system.

[0003] No matter what the reason, if the car exceeds the speed limit or even falls, and all other safety protection devices fail to work, the speed limiter and safety clamp will work together to stop the elevator car.

[0004] With the continuous improvement of living standards, consumers' requirements for home elevators have gradually upgraded.

[0005] Elevators are lightweight, safe and comfortable, so the corresponding home elevator safety component speed limiter also needs to be small.

[0006] Small size and safe and reliable.

[0007] The existing home elevator speed limiter sheave component is a separate type, which is composed of a sheave, a hub and a cam combined by bolts. The roller in the pawl assembly moves on the cam, so that the pawl and the hub cooperate to limit the movement of the sheave. However, the cam position needs to be adjusted during the production speed regulation process, which will affect the actual work efficiency. In addition, the currently used rope baffle cannot cover the sheave, causing safety hazards.

[0008] Specifically, the rope pulley components are separated, and the cam position needs to be adjusted during the production speed regulation process, which affects the actual work efficiency.

[0009] How to adjust the structure of the pulley and the cam to improve work efficiency is a problem that needs to be solved. Utility Model Content

[0010] The utility model aims to provide a safe bidirectional home elevator speed limiter, which solves the problem of multi-step speed regulation.

[0011] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0012] The utility model provides a safe two-way home elevator speed limiter, comprising a shell with a bottom suspended, a fixed shaft arranged in the shell, a rotating assembly rotatably arranged on the fixed shaft, and a speed limiting assembly rotatably arranged on the shell, characterized in that:

[0013] The rotating assembly comprises an integrally formed rope wheel and a cam, wherein the cam is arranged on the side of the rope wheel, and a speed limiting block is arranged on the side of the cam;

[0014] The speed limiting assembly comprises a rotatably arranged curved plate, springs and limiting claws arranged on both sides of the curved plate, a pressure wheel rotatably arranged on the curved plate, and the pressure wheel and the spring are located on the same side;

[0015] The pressure wheel rolls and fits on the outer periphery of the cam;

[0016] The limiting claw is used to clamp the speed limiting block;

[0017] The upper end of the spring is connected to the curved plate, and the lower end is connected to the bottom of the shell.

[0018] Optionally, a cross bar is provided on the shell, a vertical bar capable of adjusting the height is provided on the cross bar, and the top end of the vertical bar is connected to the spring.

[0019] Optionally, a wheel hub is rotatably sleeved on the fixed shaft, a plurality of spokes are evenly spaced on the outer circumference of the wheel hub, the pulley and the cam are arranged at the extended ends of the spokes, and the wheel hub is connected to the fixed shaft via a bearing.

[0020] Furthermore, the width of the spoke extension end is wider than the width of the integrally formed rope wheel and the cam, the speed limiting block is integrally formed and arranged at the extension end of the spoke, the top of the speed limiting block is flush with the cam surface, and both sides of the speed limiting block are inclined.

[0021] Optionally, the cam is a rectangular body with rounded corners.

[0022] Optionally, the curved panel is arc-shaped, a hollow column is arranged in the middle of the curved panel, a hanging plate is arranged in the shell, a limiting rod is arranged on the hanging plate and the side wall of the shell, and the hollow column is rotatably mounted on the limiting rod through a bearing.

[0023] Optionally, a limiting hole is provided at the top of the shell, a limiting strip is provided at the top of the middle position of the curved panel, and the limiting strip passes through the limiting hole.

[0024] Furthermore, an electrical switch is arranged at the top of the shell, the electrical switch has a button, a horizontal bar is arranged on the limit bar, and the button is located on the moving path of the horizontal bar.

[0025] Optionally, a bottom plate is provided at the bottom of the shell, and a first channel and a second channel are provided on the bottom plate, and the first channel and the second channel are respectively connected to two sides of the outer circumference of the rope wheel.

[0026] A passage is provided in the middle of the shell, and a first rope-blocking plate and a second rope-blocking plate are detachably provided on the shell, wherein the first rope-blocking plate and the second rope-blocking plate respectively cover two ends of the passage.

[0027] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0028] The utility model discloses a safe bidirectional speed limiter for household elevators. Since the cam and the rope pulley adopt an integrated structure, when speed regulation is required, there is no need to adjust the cam position separately. The cam and the rope pulley can be adjusted together in one step, thus saving working procedures, that is, saving time, and thus solving the problem of multi-step speed regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0030] Figure 1 It is a three-dimensional view of a safe two-way home elevator speed limiter according to a preferred embodiment of the utility model;

[0031] Figure 2 yes Figure 1 A left side view without the first rope stop plate is shown;

[0032] Figure 3 yes Figure 1 Interior view shown.

[0033] The reference numerals are described as follows:

[0034] 1. Shell; 2. Fixed shaft; 3. Rotating assembly; 4. Speed ​​limiting assembly; 11. Crossbar; 12. Vertical bar;

[0035] 13. Hanging plate; 14. Limit rod; 15. Limit hole; 16. Electrical switch; 17. Button; 18. Bottom plate;

[0036] 19. Channel; 21. Wheel hub; 22. Spoke; 31. Rope pulley; 32. Cam; 33. Speed ​​limit block; 41. Curved plate; 42. Spring; 43. Limit claw; 44. Pressure wheel; 45. Hollow column; 46. Limit bar; 47. Horizontal bar; 181. First through hole; 182. Second through hole; 191. First rope stop plate; 192. Second rope stop plate. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] like Figure 1 and Figure 2 and Figure 3 As shown, it includes a shell 1 with a suspended bottom, the bottom of the shell 1 is empty, a fixed shaft 2 is arranged in the shell 1, the fixed shaft 2 is arranged between the two side walls of the shell 1, a rotating component 3 is rotatably arranged on the fixed shaft 2, and the rotating component 3 can rotate on the fixed shaft 2. A speed limiting component 4 is also rotatably arranged on the shell 1, and the speed limiting component 4 is arranged at a distance from the rotating component 3.

[0041] The rotating assembly 3 includes an integrally formed rope pulley 31 and a cam 32. The cam 32 is arranged on the side of the rope pulley 31. A speed limit block 33 is arranged on the side of the cam 32. The rope pulley 31 is usually covered with a steel wire rope. The end of the steel wire rope is connected to the elevator body. The rope pulley 31 has two rotation directions, clockwise and counterclockwise. When the elevator body rises, the rope pulley 31 is wound around the steel wire rope. When the elevator body descends, the rope pulley 31 unscrews the steel wire rope. The movement of the elevator body drives the rope pulley 31 to rotate through the steel wire rope.

[0042] The speed limiting assembly 4 includes a rotatable curved plate 41, springs 42 and limiting claws 43 arranged on both sides of the curved plate 41, the curved plate 41 can be rotatably arranged in the shell 1, and a pressure wheel 44 is rotatably arranged on the curved plate 41, the pressure wheel 44 and the spring 42 are located on the same side, the curved plate 41 is located between the pressure wheel 44 and the spring 42, the pressure wheel 44 is close to the cam 32, and the pressure wheel 44 rolls and fits on the outer periphery of the cam 32. When the cam 32 rotates, the pressure wheel 44 rotates together.

[0043] The spring 42 is arranged away from the cam 32, the curved plate 41 and the limiting claw 43 are located above the rotation path of the speed limit block 33, the shape of the limiting claw 43 matches the shape of the speed limit block 33, the extension direction of the limiting claw 43 points to the fixed shaft 2, and the outer diameter of the limiting claw 43 is expanded in the extension direction, that is, the outer diameter of the limiting claw 43 retracts from the extension end toward the curved plate 41.

[0044] The limiting claw 43 is used to clamp the speed limiting block 33. The upper end of the spring 42 is connected to the curved plate 41, and the lower end is connected to the bottom of the shell 1. When the elevator box rises or descends at a set speed within a set range, the rope pulley 31 rotates at a set speed, and the cam 32 lifts the pressure wheel 44 during rotation, so that the limiting claw 43 moves toward the rotation path of the speed limiting block 33, but the limiting claw 43 will not clamp the speed limiting block 33. The spring 42 will pull the curved plate 41 to reset, and the limiting claw 43 will follow the reset. In this example, multiple speed limiting blocks 33 are set, and the distances between adjacent speed limiting blocks 33 are equal.

[0045] When the elevator car body rises or descends too fast, the rotation speed of the rope pulley 31 exceeds the set speed, and accordingly, the rotation speed of the cam 32 accelerates, the cam 32 keeps lifting the pressure wheel 44, and the curved plate 41 rotates, that is, the curved plate 41 tilts, and the position of the limiting claw 43 drops. At this time, the spring 42 cannot pull the curved plate 41 to reset, and the limiting claw 43 moves to the rotation path of the speed limit block 33, and the limiting claw 43 engages the speed limit block 33, so that the rotation speed of the cam 32 slows down, and even the cam 32 stops rotating. During this period, the rotation speed of the rope pulley 31 also slows down, and even the rope pulley 31 stops rotating. The rotation state of the rope pulley 31 is consistent with the rotation state of the cam 32, and the elevator car body pauses or moves slowly.

[0046] When the limit claw 43 engages the speed limit block 33, the elevator car body stops or slows down in rising or descending, the rotation of the wire rope on the rope pulley 31 also stops or slows down, the rope pulley 31 stops rotating or slows down, and the winding or unwinding of the wire rope on the rope pulley 31 also slows down or stops, thereby ensuring the safety of the elevator car body rising or descending.

[0047] A cross bar 11 is provided on the shell 1, and a vertical bar 12 capable of adjusting the height is provided on the cross bar 11. The top of the vertical bar 12 is connected to the spring 42. There is a hole on the cross bar 11, and the vertical bar 12 passes through the hole on the cross bar 11. The vertical bar 12 has threads, and a nut is used to engage the threads on the vertical bar 12 to fix the vertical bar 12 and the cross bar 11 together. The height of the vertical bar 12 can be adjusted by rotating the nut. The height of the vertical bar 12 is adjusted according to the elasticity and length of the spring 42.

[0048] A wheel axle hub 21 is rotatably sleeved on the fixed shaft 2, and a plurality of spokes 22 are evenly spaced on the outer circumference of the wheel axle hub 21. A pulley 31 and a cam 32 are arranged at the extended ends of the spokes 22, and the extended ends of the plurality of spokes 22 abut against the inner sides of the pulley 31 and the cam 32. The wheel axle hub 21 is connected to the fixed shaft 2 through a bearing, and a bearing is sleeved on the fixed shaft 2, and the wheel axle hub 21 is sleeved on the bearing.

[0049] The width of the extended end of the spoke 22 is wider than the width of the integrally formed rope pulley 31 and cam 32. The thickness of the rope pulley 31 plus the thickness of the cam 32 is not as thick as the thickness of the spoke 22. The rope pulley 31 and the cam 32 do not completely cover the extended end of the spoke 22. The speed limiting block 33 is integrally formed and arranged at the extended end of the spoke 22. The cam 32 is located between the rope pulley 31 and multiple speed limiting blocks 33. The number of speed limiting blocks 33 is determined according to the number of spokes 22. The top of the speed limiting block 33 is flush with the surface of the cam 32, and the two sides of the speed limiting block 33 are inclined. The outer diameter of the speed limiting block 33 shrinks and becomes thinner from the top toward the spoke 22.

[0050] The cam 32 is a rectangular body with rounded corners. In the present application, the cam 32 is a square rectangular body with rounded corners.

[0051] The curved panel 41 is in an arc shape, and a hollow column 45 is arranged in the middle position of the curved panel 41. A hanging plate 13 is arranged in the shell 1, and a limiting rod 14 is arranged on the hanging plate 13 and the side wall of the shell 1. The hollow column 45 is rotatably mounted on the limiting rod 14 through a bearing, so the curved panel 41 can rotate to a set angle.

[0052] A limiting hole 15 is provided at the top of the shell 1, and a limiting strip 46 is provided at the top of the middle position of the curved panel 41. The limiting strip 46 passes upward through the limiting hole 15, and the limiting strip 46 can move in the limiting hole 15. When the curved panel 41 rotates to a set angle, the curved panel 41 drives the limiting strip 46 to move a set distance, and then the limiting strip 46 is blocked by the top of the shell 1 to prevent the curved panel 41 from continuing to rotate.

[0053] An electrical switch 16 is provided at the top of the shell 1. The electrical switch 16 has a button 17. A limit bar 46 is arranged vertically upward. A horizontal bar 47 is arranged on the limit bar 46. The horizontal bar 47 and the limit bar 46 are arranged perpendicular to each other. The button 17 is located on the moving path of the horizontal bar 47. When the curved panel 41 drives the limit bar 46 to move, the limit bar 46 drives the horizontal bar 47 to move together. The horizontal bar 47 touches the button 17, and the electrical switch 16 turns off all circuits.

[0054] Only when the elevator car body stops rising or descends beyond the set speed, the rotation speed of the rope pulley 31 and the cam 32 exceeds the set speed, the curved plate 41 drives the limit bar 46 to rotate, and when the limit claw 43 catches the speed limit block 33, the horizontal bar 47 touches the button 17 at the same time, the electrical switch 16 closes all circuits, the elevator operation is interrupted, the movement of the elevator car body is suspended, and the rope pulley 31 and the cam 32 remain stationary, thereby ensuring the safety of the elevator car body.

[0055] A bottom plate 18 is disposed at the bottom of the housing 1 , and a first through hole 181 and a second through hole 182 are disposed on the bottom plate 18 . The housing 1 is fixed at the bottom by the first through hole 181 and the second through hole 182 .

[0056] There is a channel 19 in the middle of the shell 1, and a first rope baffle plate 191 and a second rope baffle plate 192 are detachably provided on the shell 1. The first rope baffle plate 191 and the second rope baffle plate 192 are bent at least once, and the first rope baffle plate 191 and the second rope baffle plate 192 are respectively covered on both sides of the channel 19, so that the steel wire rope on both sides of the rope wheel 31 is wrapped in the shell 1. When the rope wheel 31 is rotated, the steel wire rope will not rub against the first rope baffle plate 191 and the second rope baffle plate 192, so that safety hazards can be prevented. The first rope baffle plate 191 and the second rope baffle plate 192 are bent to produce depressions, and the two depressed areas are suitable for lifting and lowering of the steel wire rope, and the depression on the first rope baffle plate 191 and the depression on the second rope baffle plate 192 are arranged opposite to each other.

[0057] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A safe bidirectional home elevator speed limiter, comprising a housing (1) with its bottom suspended, a fixed shaft (2) arranged in the housing (1), a rotating assembly (3) rotatably arranged on the fixed shaft (2), and a speed limiting assembly (4) rotatably arranged on the housing (1), characterized in that: The rotating assembly (3) comprises an integrally formed rope wheel (31) and a cam (32); the cam (32) is arranged on a side of the rope wheel (31); and a speed limiting block (33) is arranged on the side of the cam (32); The speed limiting assembly (4) comprises a rotatably arranged curved plate (41), springs (42) and limiting claws (43) arranged on both sides of the curved plate (41), a pressure wheel (44) rotatably arranged on the curved plate (41), and the pressure wheel (44) and the spring (42) are located on the same side; The pressure wheel (44) rolls and fits on the outer periphery of the cam (32); The limiting claw (43) is used to clamp the speed limiting block (33); The upper end of the spring (42) is connected to the curved plate (41), and the lower end is connected to the bottom of the shell (1).

2. The safe bidirectional home elevator speed limiter according to claim 1 is characterized in that: The housing (1) is provided with a crossbar (11), the crossbar (11) is provided with a vertical bar (12) capable of adjusting the height, and the top end of the vertical bar (12) is connected to the spring (42).

3. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: A wheel hub (21) is rotatably sleeved on the fixed shaft (2), a plurality of spokes (22) are evenly spaced on the outer circumference of the wheel hub (21), the rope pulley (31) and the cam (32) are arranged at the extended ends of the spokes (22), and the wheel hub (21) is connected to the fixed shaft (2) via a bearing.

4. The safe bidirectional home elevator speed limiter according to claim 3 is characterized in that: The width of the extended end of the spoke (22) is wider than the width of the integrally formed rope wheel (31) and the cam (32); the speed limiting block (33) is integrally formed and arranged at the extended end of the spoke (22); the top end of the speed limiting block (33) is flush with the surface of the cam (32); and both sides of the speed limiting block (33) are inclined.

5. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: The cam (32) is a rectangular body with rounded corners.

6. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: The curved panel (41) is in an arc shape, a hollow column (45) is provided in the middle of the curved panel (41), a hanging plate (13) is provided in the shell (1), a limiting rod (14) is provided on the hanging plate (13) and the side wall of the shell (1), and the hollow column (45) is rotatably sleeved on the limiting rod (14) via a bearing.

7. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: A limiting hole (15) is provided at the top of the shell (1), and a limiting strip (46) is provided at the top of the middle position of the curved panel (41). The limiting strip (46) passes through the limiting hole (15).

8. The safe bidirectional home elevator speed limiter according to claim 7, characterized in that: An electrical switch (16) is disposed at the top of the housing (1), the electrical switch (16) having a button (17), and the limit strip (46) A horizontal bar (47) is provided on the top, and the button (17) is located on the moving path of the horizontal bar (47).

9. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: A bottom plate (18) is provided at the bottom of the housing (1), and a first through hole (181) and a second through hole (182) are provided on the bottom plate (18), wherein the first through hole (181) and the second through hole (182) are symmetrically arranged.

10. The safe bidirectional home elevator speed limiter according to claim 1, characterized in that: The shell (1) has a channel (19) in the middle, and a first rope blocking plate (191) and a second rope blocking plate (192) are detachably provided on the shell (1), the first rope blocking plate (191) and the second rope blocking plate (192) are bent at least once, and the first rope blocking plate (191) and the second rope blocking plate (192) are respectively covered on both sides of the channel (19).

Images