CN219950156U - Direct-acting elevator centrifugal speed limiter - Google Patents
Direct-acting elevator centrifugal speed limiter Download PDFInfo
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- CN219950156U CN219950156U CN202321503110.0U CN202321503110U CN219950156U CN 219950156 U CN219950156 U CN 219950156U CN 202321503110 U CN202321503110 U CN 202321503110U CN 219950156 U CN219950156 U CN 219950156U
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- centrifugal
- box body
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- trigger
- shaft
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- 238000007906 compression Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000036632 reaction speed Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model provides a centrifugal speed limiter of a direct-acting elevator, which comprises a box body; the compression spring shaft is positioned in the center of the box body and connected with the box body through a spring, and an annular groove is formed in the shaft side of the compression spring shaft; the trigger plate is clamped in the annular groove at one end; the rotary end cover is positioned at the front side of the box body and is rotationally connected with the box body; the trigger shaft is positioned at the front side of the pressure spring shaft and coaxial with the pressure spring shaft, and penetrates through the rotary end cover; and the centrifugal trigger device is arranged between the box body and the rotary end cover and is used for triggering the trigger plate. When the speed measuring wheel synchronously rotating with the box body reaches a limiting speed, the centrifugal trigger device enables the trigger plate to swing along with the speed measuring wheel, the trigger plate is rapidly separated from the clamping groove of the pressure spring shaft, and the pressure spring shaft is used for pushing the trigger shaft, so that the elevator hydraulic system brakes the hydraulic valve to act, the speed limiting function is realized, and the reaction speed and the safety of the elevator are improved.
Description
Technical Field
The utility model relates to an elevator safety device, in particular to a direct-acting elevator centrifugal speed limiter.
Background
The centrifugal speed limiter for elevator has the working principle that centrifugal force is used, and when the angular speed of the speed measuring wheel installed on one side of the elevator wire rope exceeds the set value, the centrifugal block is thrown outwards to contact with the friction disc or the guide rail to produce resistance, so that the speed of the rotating part is limited.
CN 106629299A discloses a centrifugal block-throwing speed limiter, which comprises a bracket, the rope sheave, the ratchet, press the rope to beat the board subassembly, limit switch, first block-throwing part, second block-throwing part, get rid of a piece connecting rod and adjusting screw, rope sheave and ratchet are erect on the support through the rope shaft, first block-throwing part is installed on the rope sheave through third bearing structure, and be equipped with the square screw towards the rope sheave rim, second block-throwing part is installed on the rope sheave through fourth bearing structure, and be equipped with the elastic component towards the rope sheave middle part, the both ends of getting rid of a piece connecting rod correspond and get rid of a piece part and second and get rid of a piece part connection, adjusting screw's upper end and first connecting plate connection, adjusting screw's lower extreme passes the through-hole on the rope sheave connecting bench, the cover is equipped with adjusting spring on the adjusting screw. The problems with the above-mentioned speed limiters are: the ratchet wheel can be triggered only after rotating for a certain angle, so that the elevator is delayed to brake and cannot play a role in safety speed limitation in time.
Disclosure of Invention
The utility model aims to provide a centrifugal speed limiter of a direct-acting elevator, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the centrifugal speed limiter of the direct-acting elevator comprises a box body and is characterized by further comprising:
the compression spring shaft is positioned in the center of the box body and connected with the box body through a spring, and an annular groove is formed in the side of the compression spring shaft;
the trigger plate is clamped in the annular groove at one end;
the rotary end cover is positioned at the front side of the box body and is fixedly connected with the box body;
the trigger shaft is positioned at the front side of the pressure spring shaft, is coaxial with the pressure spring shaft and penetrates through the rotary end cover;
and the centrifugal trigger device is arranged between the box body and the rotary end cover and is used for triggering the trigger plate.
Further, the centrifugal triggering device comprises a lower centrifugal block, an upper centrifugal block, a speed regulating spring assembly, a connecting rod and a first connecting block, wherein the upper centrifugal block and the lower centrifugal block are hinged on the box body, and the triggering plate of the lower centrifugal block is connected into a whole; the speed regulating spring assembly is arranged on the lower centrifugal block; the lower centrifugal blocks are fixedly connected with the trigger plate, the upper centrifugal blocks and the lower centrifugal blocks are symmetrically distributed by taking the trigger shaft as a center, the two centrifugal blocks are connected with each other through the connecting rod, the first connecting block is fixed at two ends of the connecting rod, and the first connecting block is rotationally connected with the corresponding centrifugal blocks. The centrifugal trigger device is used for driving the lower centrifugal block through centrifugal force, and then driving the trigger plate.
Further, the speed regulating spring assembly comprises a spring guide rod, a speed regulating spring, a support plate, a connecting block, a second spring gland and an adjusting nut, wherein the support plate is fixed on the box body, is provided with a hole and is in clearance fit with the spring guide rod; one end of the spring guide rod is fixed on the outer side of the support plate through a nut, the other end of the spring guide rod penetrates through the spring gland and the adjusting nut to be fixed on the lower centrifugal block through the second connecting block, and the speed regulating spring is arranged on the spring guide rod. The sleeve number spring device is used for adjusting the speed required by triggering of the centrifugal trigger device through the elastic force which needs to be overcome by adjusting the centrifugal force.
Compared with the prior art, the utility model has the beneficial effects that: when the speed measuring wheel synchronously rotating with the box body reaches a limiting speed, the centrifugal trigger device enables the trigger plate to swing along with the speed measuring wheel, so that the trigger plate is rapidly separated from the clamping groove of the pressure spring shaft, and then the pressure spring shaft pushes the trigger shaft, so that the brake hydraulic valve of the elevator hydraulic system acts, the speed limiting function is realized, the reaction speed is high, and the safety of elevator speed limiting is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings that are required to be used in the embodiments will be briefly described below.
Fig. 1 is a schematic structural view of a centrifugal governor for a direct-acting elevator according to this embodiment.
Fig. 2 is a perspective view of the present embodiment with the rotary end cap removed from the centrifugal governor for an elevator.
Fig. 3 is an internal structural view of the centrifugal governor for a direct-acting elevator of the present embodiment.
Fig. 4 is an external perspective view of the centrifugal governor of the direct-acting elevator of the present embodiment.
In the figure: 1-connecting block II, 2-adjusting nut, 3-spring gland, 4-spring guide rod, 5-speed adjusting spring, 6-support plate, 7-upper centrifugal block, 8-box body, 9-locknut, the device comprises a pin shaft 10, a connecting block 11, a connecting rod 12, a lower centrifugal block 13, a trigger plate 14, a pressure spring shaft 15, a trigger shaft 16, a bearing seat 17 and a rotary end cover 18.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-4, a centrifugal speed limiter of a direct-acting elevator comprises a box body 8, wherein a connecting sleeve integrated with the box body 8 is arranged in the center of the rear end surface of the box body 8, and a key slot is formed in the inner side of the connecting sleeve and is used for connecting an elevator speed measuring wheel shaft; the compression spring shaft 15 is positioned at the center of the box body 8 and is connected with the box body 8 through the speed regulating spring 5, and an annular groove is formed in the shaft side of the compression spring shaft 15; the trigger plate 14 is clamped in the annular groove at one end of the trigger plate 14, and the trigger plate 14 is used for limiting the pressure spring shaft 15 to enable the speed regulating spring 5 to be in a compressed state; the rotary end cover 18 is positioned at the front side of the box body 8 and is fixedly connected with the box body 8; the trigger shaft 16 is positioned at the front side of the pressure spring shaft 15, and the trigger shaft 16 is coaxial with the pressure spring shaft 15 and penetrates through the center of the rotary end cover 18; a centrifugal trigger device is mounted between the housing 8 and the rotary end cap 18 for triggering the trigger plate 14.
As shown in fig. 1 and 2, in a preferred embodiment of the present utility model, the centrifugal trigger device includes a lower centrifugal block 13 and an upper centrifugal block 7 hinged on the case respectively, the lower centrifugal block 13 is connected with a trigger plate 14 as a whole, and a speed regulation spring assembly is disposed on the lower centrifugal block 13; the trigger plate 14 is fixedly connected with the lower centrifugal block 13, the upper centrifugal block 7 and the lower centrifugal block 13 are symmetrically arranged by taking a pressure spring shaft as a center, the two centrifugal blocks are connected with each other through a connecting rod 12, two ends of the connecting rod 12 are fixedly provided with a first connecting block 11, the first connecting block 11 is connected with the corresponding centrifugal block, the upper centrifugal block and the lower centrifugal block can rotate around respective pin shafts 10 relative to a speed limiter, the upper centrifugal block and the lower centrifugal block are respectively fixed at one end of the corresponding pin shaft 10 through a gasket and a locknut 9, the other end of the pin shaft 10 is positioned in a bearing sleeve 17, and the bearing sleeve 17 is fixed on the box body 8 through four bolts, hexagonal nuts and gaskets.
As shown in fig. 1 and 2, in a preferred embodiment of the present utility model, the speed regulating spring assembly includes a spring guide rod 4, a speed regulating spring 5, a support plate 6, a second connecting block 1, a spring gland 3 and an adjusting nut 2, wherein the support plate 6 is fixed on a box body 8, a hole is formed on the support plate and is in clearance fit with the spring guide rod 4, one end of the spring guide rod 4 is fixed on the outer side of the support plate 6 through the nut, the other end of the spring guide rod 4 passes through the spring gland 3 and the adjusting nut 2 and is fixed on the tail end of a lower centrifugal block 13 through the second connecting block 1, and the speed regulating spring 5 is mounted on the spring guide rod 4.
In the preferred embodiment of the utility model, the triggering speed of the centrifugal triggering device is adjusted by rotating the adjusting nut 2 to change the tensioning degree of the speed adjusting spring 5.
The utility model has the working principle that when the speed limiter works normally, the tension of the speed regulating spring 5 keeps the centrifugal blocks 7 and 13 to be tensioned towards the axle center. When the elevator car normally and stably runs, the speed limiter rotates at a constant speed under the action of the coaxial speed measuring wheel. The two centrifugal blocks rotate along with the speed limiter under the mutual balance action of the tension of the speed regulating spring 5 and the centrifugal effect. When the running speed of the elevator reaches a preset speed, namely the speed of the elevator car is increased, the centrifugal effect of the centrifugal block is more obvious, the balance state of the tension force of the speed regulating spring 5 is broken, the centrifugal force swings outwards away from the axis, the trigger plate 14 integrated with the lower centrifugal block 13 swings outwards along with the centrifugal force, the tail part of the trigger plate 14 overcomes the friction force between the trigger plate and the pressure spring shaft 15, and is separated from the clamping groove position of the pressure spring shaft 15, the trigger shaft 16 is released, and then a brake switch is triggered, so that the brake hydraulic valve is started, the hydraulic cylinder is rapidly unloaded, and the speed limiting function is realized. The brake hydraulic valve and the brake hydraulic cylinder are both of the prior art and are not described in detail herein.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (3)
1. The utility model provides a direct-acting elevator centrifugal speed limiter, includes the box, box central point puts and is equipped with the adapter sleeve, the keyway has been seted up to the adapter sleeve inboard, its characterized in that still includes:
the compression spring shaft is positioned in the center of the box body and connected with the box body through a spring, and an annular groove is formed in the side of the compression spring shaft;
the trigger plate is clamped in the annular groove at one end;
the rotary end cover is positioned at the front side of the box body and is fixedly connected with the box body;
the trigger shaft is positioned at the front side of the pressure spring shaft, is coaxial with the pressure spring shaft and penetrates through the rotary end cover;
and the centrifugal trigger device is arranged between the box body and the rotary end cover and is used for triggering the trigger plate.
2. The centrifugal speed limiter of claim 1, wherein the centrifugal trigger device comprises a lower centrifugal block, an upper centrifugal block, a speed regulating spring assembly, a connecting rod and a connecting block I, wherein the upper and lower centrifugal blocks are hinged on the box body, and the trigger plate of the lower centrifugal block is connected into a whole; the speed regulating spring assembly is arranged on the lower centrifugal block; the lower centrifugal blocks are fixedly connected with the trigger plate, the upper centrifugal blocks and the lower centrifugal blocks are symmetrically distributed by taking the trigger shaft as a center, the two centrifugal blocks are connected with each other through the connecting rod, the first connecting block is fixed at two ends of the connecting rod, and the first connecting block is rotationally connected with the corresponding centrifugal blocks.
3. The centrifugal speed limiter of claim 2, wherein the speed regulating spring assembly comprises a spring guide rod, a speed regulating spring, a support plate, a spring gland, a second connecting block and an adjusting nut, wherein the support plate is fixed on the box body, is provided with an opening and is in clearance fit with the spring guide rod; one end of the spring guide rod is fixed on the outer side of the support plate through a nut, the other end of the spring guide rod penetrates through the spring gland and the adjusting nut to be fixed on the lower centrifugal block through the second connecting block, and the speed regulating spring is arranged on the spring guide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321503110.0U CN219950156U (en) | 2023-06-13 | 2023-06-13 | Direct-acting elevator centrifugal speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321503110.0U CN219950156U (en) | 2023-06-13 | 2023-06-13 | Direct-acting elevator centrifugal speed limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219950156U true CN219950156U (en) | 2023-11-03 |
Family
ID=88547922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321503110.0U Active CN219950156U (en) | 2023-06-13 | 2023-06-13 | Direct-acting elevator centrifugal speed limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219950156U (en) |
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2023
- 2023-06-13 CN CN202321503110.0U patent/CN219950156U/en active Active
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