CN220766205U

CN220766205U - Elevator speed limiter

Info

Publication number: CN220766205U
Application number: CN202322492898.6U
Authority: CN
Inventors: 白卫宏; 竺钊辉; 俞腾麒; 穆俊江; 刘晶
Original assignee: Ningbo Aodepu Elevator Components Co ltd
Current assignee: Ningbo Aodepu Elevator Components Co ltd
Priority date: 2023-09-13
Filing date: 2023-09-13
Publication date: 2024-04-12
Anticipated expiration: 2033-09-13

Abstract

The utility model discloses an elevator speed limiter, which comprises a frame (1), a rope pulley (2), a driving switch (3) electrically connected with a traction machine, a disc (4) and a group of throwing pieces (5) rotatably connected to the rope pulley (2), wherein the rope pulley (2) rotates on the frame (1), and the driving switch (3) is positioned at the outer side of the rope pulley (2) and is fixed with the frame (1), and is characterized in that: the driving switch (3) is provided with a first trigger end (6) facing the rope wheel (2), and the outer side wall of one swing piece (5) is provided with a second trigger end (7); in the overspeed state, the swing piece (5) swings outwards under the action of centrifugal force to enable the second trigger end (7) to move outwards in the radial direction, and the swing piece collides with the first trigger end (6) to trigger the driving switch (3). According to the elevator speed limiter, the trigger structure is directly added on the throwing piece to trigger the driving switch, so that the structure is simpler and more compact, and the axial distance of the whole speed limiter can be reduced.

Description

Elevator speed limiter

Technical Field

The utility model relates to the technical field of elevator parts, in particular to an elevator speed limiter.

Background

The current speed limiter of household elevator consists of frame assembly, rope wheel assembly and ratchet wheel assembly. The frame component comprises a first base, a second base and a rope baffle, wherein the first base is fixed with the bottom of the second base and forms a U after being fixed, the rope baffle is fixed between the first base and the second base, and the rope baffle is used for blocking a steel wire rope and preventing the steel wire rope from going beyond the position. The rope wheel assembly comprises a main shaft, a main wheel and a centrifugal component, wherein the main shaft is fixed between a first base and a second base, the main wheel is rotationally connected to the main shaft, a rope groove of the main wheel is V-shaped, and after the speed limiter acts, the steel wire rope is round and can be clamped more tightly in the rope groove, and the rope wheel assembly is braked gradually by friction force of the steel wire rope and the rope groove. The centrifugal component is arranged on the main wheel. The centrifugal component comprises an upper centrifugal hammer, a lower centrifugal hammer, a connecting rod, a spring hanging plate and a speed regulating spring, wherein the upper centrifugal hammer and the lower centrifugal hammer are respectively and rotatably connected to the main wheel, the connecting rod is rotatably connected between the upper centrifugal hammer and the lower centrifugal hammer, the spring hanging plate is arranged on the main wheel through the regulating component, and the upper end of the speed regulating spring is connected with the spring hanging plate in a hanging mode. The ratchet assembly comprises a ratchet, a limiting torsion spring, a remote control part and a power-off control part, wherein the ratchet is rotationally connected to a main shaft and is positioned in front of a main wheel, the limiting torsion spring is sleeved on the main shaft and is positioned in front of the ratchet, the ratchet is provided with a convex pawl as shown in the figure, after the upper centrifugal hammer and the lower centrifugal hammer deflect, the ratchet is hit on the pawl to promote the ratchet to rotate, and after the upper centrifugal hammer and the lower centrifugal hammer are gradually restored, the ratchet is restored under the torsion action of the limiting torsion spring.

When the descending overspeed of the lift car (or the counterweight) reaches the contact action speed, the upper centrifugal hammer and the lower centrifugal hammer are thrown away and hit on the ratchet wheel, so that the ratchet wheel deflects, the V-shaped block jacks up the trigger block, and the trigger block triggers the travel switch, so that the traction machine is powered off and stops running. With the speed reduction of the main wheel, the rope groove of the main wheel is V-shaped, and after the speed limiter acts, the steel wire rope is round and can be clamped in the rope groove more tightly, and the braking is stopped gradually by the friction force of the steel wire rope and the rope groove.

When the home elevator speed limiter with the structure is triggered, a ratchet structure is independently added, a trigger block of the ratchet triggers a travel switch, and the ratchet is arranged on the rotating shaft, so that the axial distance of the speed limiter is increased, and the installation space is occupied during installation; in addition, the trigger and travel switch of the ratchet structure needs a set of driving mechanism to trigger, so that the structure is complex and not compact enough.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the elevator speed limiter which is characterized in that a trigger structure is directly added on a throwing piece to trigger a driving switch, so that the structure is simpler and more compact, and the axial distance of the whole speed limiter can be reduced.

The utility model provides an elevator speed limiter with the following structure, which comprises a frame, a rope pulley, a driving switch electrically connected with a tractor, a disc and a group of throwing pieces rotationally connected to the rope pulley, wherein the rope pulley rotates on the frame, and the driving switch is positioned at the outer side of the rope pulley and is fixed with the frame, and is characterized in that: the driving switch is provided with a first trigger end facing the rope wheel, the outer side wall of one of the swing pieces is provided with a second trigger end, and in an overspeed state, the swing pieces swing outwards under the action of centrifugal force to enable the second trigger end to move outwards in the radial direction and collide with the first trigger end to trigger the driving switch.

The outer side wall of the throwing piece is provided with a groove, the second trigger end is a rod and is embedded in a positioning block, the positioning block is embedded in the groove, and the outer end of the second trigger end extends out of the positioning block and protrudes out of the outer side wall of the throwing piece.

The driving switch is provided with a downward switch plate, and the first trigger end is a screw rod penetrating through the switch plate.

The outer side wall of the disc is provided with a U-shaped notch, and the axis of the first trigger end is parallel to the axis of the disc and is positioned in the U-shaped notch; and the first trigger end collides with the side wall of the U-shaped notch at the same time of collision of the first trigger end and the second trigger end in the overspeed state.

A space is arranged between the bottom of the positioning block and the bottom surface of the groove, the inner end of the second trigger end is positioned in the space, and the distance of the outer end extending out is adjusted to provide space.

The end face of the throwing piece is provided with a mounting block, the groove is positioned on the mounting block, and the mounting block is detachably connected with the throwing piece.

After adopting the structure, the utility model has the following advantages: 1. the outer side wall of one of the throwing pieces is provided with a second trigger end, and a trigger structure is directly added on the throwing piece to trigger the driving switch; in addition, the driving switch is provided with a first trigger end facing the rope wheel, when the trigger is performed, the trigger ends of the driving switch and the rope wheel are directly contacted to trigger, a driving mechanism is omitted, and the trigger is more direct and has better reliability. 2. No ratchet wheel is additionally installed, so that the axial size of the whole speed reducer is reduced, and the installation space can be occupied when the speed reducer is installed in actual use. 3. The second trigger end of the throwing piece is in collision with the first trigger end to trigger the driving switch, the positions of the second trigger end and the first trigger end are directly adjusted, and the debugging is accurate, so that the required technical requirements are met.

As improvement, the outer side wall of the throwing piece is provided with a groove, the second trigger end is a rod and is embedded in a positioning block, the positioning block is embedded in the groove, the outer end of the second trigger end extends out of the positioning block and protrudes out of the outer side wall of the throwing piece, so that the second trigger end after the striking after the triggering is replaced conveniently,

As an improvement, the driving switch is provided with a downward switch plate, the first trigger end is a screw rod penetrating through the switch plate, the screw rod is fixed on the switch plate through a nut, and the distance from one end of the switch plate to the other end of the switch plate can be adjusted.

As an improvement, a space is arranged between the bottom of the positioning block and the bottom surface of the groove, the inner end of the second trigger end is positioned in the space, and the distance extending out of the outer end is adjusted to provide space, so that fine adjustment is convenient during debugging.

As an improvement, the end face of the throwing piece is provided with a mounting block, the groove is positioned on the mounting block, and the mounting block is detachably connected with the throwing piece, so that the mounting block is convenient to replace.

Drawings

Fig. 1 is a schematic perspective view of an elevator governor of the present utility model.

Fig. 2 is a schematic view of the internal structure of the elevator governor of the present utility model.

Fig. 3 is a schematic structural view of the swing sheet of the present utility model.

Fig. 4 is a schematic structural view of the driving switch of the present utility model.

Fig. 5 is a schematic diagram of the swing plate and the driving switch of the present utility model.

The figure shows: 1. the device comprises a frame, 2, a rope pulley, 3, a driving switch, 4, a disc, 5, a throwing piece, 6, a first trigger end, 7, a second trigger end, 8, a groove, 9, a positioning block, 10, a switch board, 11, a U-shaped notch, 12, a mounting block, 13 and a nut.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 5, the elevator speed limiter comprises a frame 1, a rope pulley 2, a driving switch 3 electrically connected with a tractor, a disc 4 and a group of throwing pieces 5 rotatably connected to the rope pulley 2, wherein the rope pulley 2 is rotated on the frame 1, and the driving switch 3 is positioned on the outer side of the rope pulley 2 and fixed with the frame 1. The group of the throwing pieces 5 do not throw outwards when the rope pulley 2 rotates at a normal speed. At overspeed, the rotation speed of the sheave 2 increases, the centrifugal force of the slinger 5 increases, and the slinger slings outward beyond the preload of the tension spring.

As shown in fig. 1 and 4, the driving switch 3 is provided with a first trigger end 6 facing the sheave 2, the driving switch 3 is provided with a downward switch board 10, and the switch board 10 is pushed by an external force to be capable of being driven by lateral movement, so that an overspeed lead number is output. The first trigger end 6 is a screw rod penetrating through the switch board 10. The switch board 10 faces the outer wall of the rope pulley 2, a threaded hole is formed in the outer end portion of the switch board 10, the screw rod penetrates through the threaded hole and is locked by the nut 13, the nut 13 is loosened again during adjustment, the extending distance of the screw rod is adjusted, and finally the nut 13 is locked.

The outer side wall of one of the swing pieces 5 on the rope pulley 2 is provided with a second trigger end 7, the outer side wall of the swing piece 5 is provided with a groove 8, the second trigger end 7 is a rod and is embedded in a positioning block 9, the positioning block 9 is embedded in the groove 8, and the outer end of the second trigger end 7 extends out of the positioning block 9 and protrudes out of the outer side wall of the swing piece 5. The end face of the throwing piece 5 is provided with a mounting block 12, the groove 8 is positioned on the mounting block 12, and the mounting block 12 is detachably connected with the throwing piece 5. The mounting block 12 is tightly matched and fixed with the groove 8, so that the rope pulley 2 is prevented from falling off during rotation. When the second trigger end 7 is replaced at a later stage, the mounting block 12 can be taken out of the groove 8, and the second trigger end 7 in the mounting block 12 can be replaced.

As shown in fig. 3, a U-shaped notch 11 is formed in the outer side wall of the disc 4, and the axis of the first trigger end 6 is parallel to the axis of the disc 4 and is located in the U-shaped notch 11; the first trigger end 6 collides with the side wall of the U-shaped notch 11 at the same time when the first trigger end 6 collides with the second trigger end 7 in the overspeed state.

A space is arranged between the bottom of the positioning block 9 and the bottom surface of the groove 8, the inner end of the second trigger end 7 is positioned in the space, and the distance of the outer end extending is adjusted to provide space.

As shown in fig. 5, the working principle is: the rope pulley 2 is overspeed, the swing piece 5 swings outwards under the action of centrifugal force, and the swing piece 5 drives the mounting block 12 and the second trigger end 7 in the groove 8 to move radially outwards and collide with the first trigger end 6 to trigger the driving switch 3.

Claims

1. The utility model provides an elevator overspeed governor, includes frame (1), rope sheave (2), with tractor electrical connection's driving switch (3), disc (4) and rotate a set of piece (5) of getting rid of and connecting on rope sheave (2), rope sheave (2) rotate on frame (1), driving switch (3) are located the outside of rope sheave (2) and are fixed with frame (1), its characterized in that: the driving switch (3) is provided with a first trigger end (6) facing the rope wheel (2), and the outer side wall of one swing piece (5) is provided with a second trigger end (7); in the overspeed state, the swing piece (5) swings outwards under the action of centrifugal force to enable the second trigger end (7) to move outwards in the radial direction, and the swing piece collides with the first trigger end (6) to trigger the driving switch (3).

2. An elevator governor according to claim 1, characterized in that: the outer side wall of the throwing piece (5) is provided with a groove (8), the second triggering end (7) is a rod and is embedded in a positioning block (9), the positioning block (9) is embedded in the groove (8), and the outer end of the second triggering end (7) extends out of the positioning block (9) and protrudes out of the outer side wall of the throwing piece (5).

3. An elevator governor according to claim 1, characterized in that: the driving switch (3) is provided with a downward switch plate (10), and the first trigger end (6) is a screw rod penetrating through the switch plate (10).

4. An elevator governor according to claim 1, characterized in that: the outer side wall of the disc (4) is provided with a U-shaped notch (11), and the axis of the first trigger end (6) is parallel to the axis of the disc (4) and is positioned in the U-shaped notch (11); the first trigger end (6) collides with the side wall of the U-shaped notch (11) at the same time when the first trigger end (6) collides with the second trigger end (7) in the overspeed state.

5. An elevator governor according to claim 2, characterized in that: a space is arranged between the bottom of the positioning block (9) and the bottom surface of the groove (8), the inner end of the second trigger end (7) is positioned in the space, and the distance of the outer end extending out is adjusted to provide space.

6. An elevator governor according to claim 2, characterized in that: the end face of the throwing piece (5) is provided with a mounting block (12), the groove (8) is positioned on the mounting block (12), and the mounting block (12) is detachably connected with the throwing piece (5).