CN203558662U - One-way machine-room-less speed limiter - Google Patents
One-way machine-room-less speed limiter Download PDFInfo
- Publication number
- CN203558662U CN203558662U CN201320678201.8U CN201320678201U CN203558662U CN 203558662 U CN203558662 U CN 203558662U CN 201320678201 U CN201320678201 U CN 201320678201U CN 203558662 U CN203558662 U CN 203558662U
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- China
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- ratchet
- rope sheave
- pawl
- hammer
- gravity drop
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Abstract
The utility model discloses a one-way machine-room-less speed limiter. A rope wheel and a ratchet wheel are coaxially and rotationally assembled on a base; a pawl is rotationally assembled on one side of the surface of the rope wheel; a pawl torsion spring for enabling the pawl to rotate to the ratchet wheel to be matched with a clamping groove of the ratchet wheel in a clamping manner is arranged between the pawl and the rope wheel; a pawl positioning structure is rotationally assembled on the surface of the rope wheel; a positioning torsion spring is arranged between the pawl positioning structure and the rope wheel; the pressing end of the pawl positioning structure is matched with the pawl in an elastic pressing manner; two gravity hammers are rotationally assembled on the other side of the surface of the rope wheel; an ejection head which is matched with the gravity hammers in a pushed and pressed manner when the hammer heads of the gravity hammers rotate to the outer edge of the rope wheel is convexly arranged on the trigger part of the pawl positioning structure; a lifting reset rod which is pressed by the hammer handles of the gravity hammers to enable the pawl to be separated from the ratchet wheel and enable the pawl positioning structure and the pawl to be reset when the hammer handles of the gravity hammers rotate to the edge of the rope wheel is convexly arranged on the pawl. According to the speed limiter, the pawl and the pawl positioning structure do not need to be manually reset; the speed limiter can be used in elevators without machine rooms.
Description
Technical field
The utility model relates to a kind of for limiting the velocity limiter of elevator speed, relates in particular to a kind of unidirectional machine-room-less speed limiter.
Background technology
Velocity limiter is the critical component of elevator safety, and of the prior art have a kind of such velocity limiter, comprises base, and on base, coaxial rotation is equipped with rope sheave and ratchet, is arranged with steel rope on rope sheave.The diameter of ratchet is less than the diameter of rope sheave, on the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with torsion spring, torsion spring is to ratchet torsion, ratchet is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet, at ratchet in free state, ratchet and ratchet can be in the states of clamping, on rope sheave, also rotate and be provided with ratchet location structure, ratchet location structure has a top pressure side, this pressure side top, top is pressed on ratchet, make ratchet in decontroling the normal condition of ratchet, between ratchet location structure and rope sheave, there is torsion spring, torsion spring provides the power of ratchet of compressing for ratchet location structure, make ratchet overcome the torsion spring power on it, the state that maintenance is separation with ratchet, on rope sheave, be also rotatably equipped with two gravity drop hammers, ratchet and ratchet location structure are in a side of rope sheave, two gravity drop hammers are in an other side of rope sheave.Two gravity drop hammers set-up mode on rope sheave is centrosymmetric mode, the run-on point of gravity drop hammer is not in two ends, more greatly tup end of one end quality of gravity drop hammer, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer and rope sheave, be provided with compression-spring device, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, between the tup portion of this gravity drop hammer and the hammer handle portion of another gravity drop hammer, be connected with connecting rod, the two ends of connecting rod are hinged with two gravity drop hammers respectively, when rope sheave normal rotation, under the effect of compression-spring device, the tup portion of two gravity drop hammers is all in the centre of rope sheave.When rope sheave overspeed operation, under the effect of centnifugal force, the spring force that two gravity drop hammers can overcome compression-spring device opens, and two tups can all can turn to the edge of rope sheave, and two hammer handles turn to the center of rope sheave.On ratchet location structure, there is the trigger unit through rope sheave, when the tup of gravity drop hammer turns to the outer rim of rope sheave, gravity drop hammer is pressed the top being convexly equipped with in trigger unit to top, the power that makes ratchet location structure overcome its torsion spring is rotated, ratchet location structure compresses ratchet, make ratchet continue to rotate to the direction away from ratchet, along with the increase of rotation distance, ratchet location structure can be decontroled ratchet, ratchet is stuck with ratchet under the effect of its torsion spring, when ratchet location structure is decontroled after ratchet, ratchet will be crossed ratchet location structure and keep off conversely ratchet location structure, ratchet location structure can not be resetted, at this moment, ratchet location structure pushes up under the effect of torsion spring power presses ratchet, ratchet failure-free is in and the state of ratchet buckle, in this state, if move ratchet, make it to the direction away from ratchet, rotate and continue to rotate, ratchet will be separation with ratchet location structure, ratchet location structure is return under the effect of its torsion spring, at this moment decontrol ratchet, ratchet location structure will be located with ratchet.At this moment, ratchet can keep off ratchet location structure conversely, and ratchet location structure can not be resetted, and at this moment, ratchet location structure pushes up under the effect of torsion spring power presses ratchet, and ratchet failure-free is in and the state of ratchet buckle.Rope sheave drives ratchet to rotate by ratchet.A side in rope sheave on base is rotatably equipped with slipper, between the side of slipper and wheel face, be provided with connecting plate, one end of connecting plate and the side of slipper are hinged, the other end of connecting plate and the wheel face of ratchet are hinged, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives slipper to press to rope sheave by connecting plate when rotating, and realizes the braking of rope sheave.Once rope sheave rotates hypervelocity, gravity drop hammer opens, and ratchet and pawl is fastened togather, when service personnel overhauls, even if by ratchet anyway, allow ratchet and ratchet when released state, ratchet still cannot return, need to manually overcome torsion spring power and rotate ratchet, make ratchet return and locate with ratchet location structure, in machine-roomless lift, workman cannot carry out the reset of ratchet, has caused this class velocity limiter in machine-roomless lift, to use.
Utility model content
The purpose of this utility model is to provide a kind of unidirectional machine-room-less speed limiter, the problem of having no idea to use in machine-roomless lift to solve velocity limiter of the prior art.
In order to realize above object, the utility model adopts following technical scheme: a kind of unidirectional machine-room-less speed limiter, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and ratchet elastic top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, in the trigger unit of ratchet location structure, convex with when the tup of gravity drop hammer turns to the outer rim of rope sheave and push with power hammer the top coordinating, on described ratchet, convex with when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave with the hammer handle top of gravity drop hammer and press and make ratchet separation with ratchet and make the lifting reset lever of ratchet location structure and ratchet pawl reset.
Described rope sheave is hub-like, and lifting reset lever is by passing in the space between two spokes of rope sheave.
On the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is by passing in functional hole, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between hole wall and the lifting reset lever of functional hole, and described functional hole has the part of dodging of dodging lifting reset lever.
On the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is by passing in functional hole, on the hammer handle of gravity drop hammer, by being located in helicitic texture in functional hole, be fixed with top pinch roller, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between top pinch roller and lifting reset lever, and described functional hole has the part of dodging of dodging lifting reset lever.
On ratchet of the present utility model, convex with lifting reset lever, when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave, namely, when gravity drop hammer resets, the hammer handle of gravity drop hammer can push up presses lifting reset lever, ratchet is rotated to the direction away from ratchet, ratchet is separation with ratchet location structure, the multiple location structure of ratchet and ratchet resets, return normal condition, ratchet is in decontroling the state of ratchet, and ratchet of the present utility model and ratchet location structure can automatically reset, do not need manual reset, can be used in machine-roomless lift.
Accompanying drawing explanation
Fig. 1 is the integral structure schematic diagram of the utility model embodiment;
Fig. 2 is rope sheave in Fig. 1 and the assembling schematic diagram of ratchet;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right elevation of Fig. 2;
Fig. 5 is the exploded perspective view of the assembly drowing of rope sheave in Fig. 1 and ratchet.
The specific embodiment
An embodiment for unidirectional machine-room-less speed limiter, in Fig. 1 ~ 5, on base 1, coaxial rotation is equipped with rope sheave 2 and ratchet 3, on rope sheave 2, is arranged with steel rope.The diameter of ratchet 3 is less than the diameter of rope sheave 2, on the wheel face of rope sheave 2, be rotatably equipped with ratchet 4, between ratchet 4 and rope sheave 2, be provided with torsion spring, torsion spring is to ratchet 4 torsion, ratchet 4 is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet 3, at ratchet 4 in free state, ratchet 4 can be in the state of clamping with ratchet 3, on rope sheave 2, also rotate and be provided with ratchet location structure 6, ratchet location structure 6 has a top pressure side, this pressure side top, top is pressed on ratchet 4, make ratchet 4 in decontroling the normal condition of ratchet 3, between ratchet location structure 6 and rope sheave 2, there is torsion spring, torsion spring provides the power of ratchet 4 of compressing for ratchet location structure 6, make ratchet 4 overcome the torsion spring power on it, the state that maintenance is separation with ratchet 3, on rope sheave 2, be also rotatably equipped with two gravity drop hammers 5, ratchet 4 and ratchet location structure 6 are in a side of rope sheave 2, two gravity drop hammers 5 are in an other side of rope sheave 2.Two gravity drop hammers 5 set-up mode on rope sheave 2 is centrosymmetric mode, the run-on point of gravity drop hammer 5 is not in two ends, more greatly tup end of one end quality of gravity drop hammer 5, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer 5 and rope sheave 2, be provided with compression-spring device 11, compression-spring device 11 makes the tup end of gravity drop hammer 5 be in the centre of rope sheave 2, between the tup portion of this gravity drop hammer 5 and the hammer handle portion of another gravity drop hammer 5, be connected with connecting rod 10, the two ends of connecting rod 10 are hinged with two gravity drop hammers 5 respectively, when rope sheave 2 normal rotation, under the effect of compression-spring device 11, the tup portion of two gravity drop hammers 5 is all in the centre of rope sheave 2.When rope sheave 2 overspeed operation, under the effect of centnifugal force, the spring force that two gravity drop hammers 5 can overcome compression-spring device 11 opens, and two tups can all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2.On ratchet location structure 6, there is the trigger unit through rope sheave 2, when the tup of gravity drop hammer 5 turns to the outer rim of rope sheave 2, gravity drop hammer 5 is pressed the top being convexly equipped with in trigger unit to top, the power that makes ratchet location structure 6 overcome its torsion spring is rotated, ratchet location structure 6 compresses ratchet 4, make ratchet 4 continue to rotate to the direction away from ratchet 3, along with the increase of rotation distance, ratchet location structure 6 can be decontroled ratchet 4, ratchet 4 is stuck with ratchet 3 under the effect of its torsion spring, when ratchet location structure 6 is decontroled after ratchet 4, ratchet 4 will be crossed ratchet location structure 6 and keep off conversely ratchet location structure 6, ratchet location structure 6 can not be resetted, at this moment, ratchet location structure 6 pushes up under the effect of torsion spring power presses ratchet 4, ratchet 4 failure-freies are in and the state of ratchet 3 buckles.In this state, if the buckle between contact ratchet 4 and ratchet 3.Making ratchet 4 and ratchet location structure 6 reply top mutually presses, while making ratchet 4 remain on the state separation with ratchet 3, just can move ratchet 4 makes it to the direction away from ratchet 3, rotate and continue to rotate, ratchet 4 will be separation with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, and both are returned to initial condition.
On ratchet 4, convex with lifting reset lever 7, lifting reset lever 7 is perpendicular to the wheel face of rope sheave 2, the rope sheave 2 is here wheel hub dress, it is exactly wheel rim, have core wheel, between core wheel and wheel rim, by spoke, be linked to be an entirety, lifting reset lever 7 is by passing between two spokes, on the hammer handle of gravity drop hammer 5, offer functional hole 9, lifting reset lever 7 by after passing between two spokes again by passing in functional hole 9.On the hammer handle of gravity drop hammer 5, by being located in helicitic texture in functional hole 9, be fixed with top pinch roller 8, when gravity drop hammer 5 resets, namely when the hammer handle of gravity drop hammer 5 turns to the wheel rim of rope sheave 2, top pinch roller 8 can be pressed lifting reset lever 7 in top, namely drive ratchet 4 to make it to the direction away from ratchet 3, rotate and continue to rotate, ratchet 4 will be separation with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, both are returned to initial condition, realize automatically reseting of ratchet 4.
Because lifting reset lever 7 is through functional hole 9 on the hammer handle of gravity drop hammer 5, in motion process, lifting reset lever 7 can be with respect to the hammer handle motion of gravity drop hammer 5, so functional hole 9 need to have the part of dodging of dodging lifting reset lever 7, dodge part and can make lifting reset lever 7 move freely with respect to gravity drop hammer 5.
Top pinch roller also can be installed in other embodiments, directly by the hole wall top of functional hole 9, press lifting reset lever 7.
Claims (4)
1. a unidirectional machine-room-less speed limiter, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and ratchet elastic top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, in the trigger unit of ratchet location structure, convex with when the tup of gravity drop hammer turns to the outer rim of rope sheave and push with power hammer the top coordinating, it is characterized in that: on described ratchet, convex with when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave with the hammer handle top of gravity drop hammer and press and make ratchet separation with ratchet and make the lifting reset lever of ratchet location structure and ratchet pawl reset.
2. unidirectional machine-room-less speed limiter according to claim 1, is characterized in that: described rope sheave is hub-like, and lifting reset lever is by passing in the space between two spokes of rope sheave.
3. unidirectional machine-room-less speed limiter according to claim 1 and 2, it is characterized in that: on the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is by passing in functional hole, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between hole wall and the lifting reset lever of functional hole, and described functional hole has the part of dodging of dodging lifting reset lever.
4. unidirectional machine-room-less speed limiter according to claim 1 and 2, it is characterized in that: on the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is by passing in functional hole, on the hammer handle of gravity drop hammer, by being located in helicitic texture in functional hole, be fixed with top pinch roller, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between top pinch roller and lifting reset lever, and described functional hole has the part of dodging of dodging lifting reset lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678201.8U CN203558662U (en) | 2013-10-31 | 2013-10-31 | One-way machine-room-less speed limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320678201.8U CN203558662U (en) | 2013-10-31 | 2013-10-31 | One-way machine-room-less speed limiter |
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| Publication Number | Publication Date |
|---|---|
| CN203558662U true CN203558662U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320678201.8U Expired - Fee Related CN203558662U (en) | 2013-10-31 | 2013-10-31 | One-way machine-room-less speed limiter |
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| CN (1) | CN203558662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508289A (en) * | 2013-10-31 | 2014-01-15 | 西继迅达（许昌）电梯有限公司 | One-way speed limiter without machine room |
-
2013
- 2013-10-31 CN CN201320678201.8U patent/CN203558662U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508289A (en) * | 2013-10-31 | 2014-01-15 | 西继迅达（许昌）电梯有限公司 | One-way speed limiter without machine room |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20171031 |