CN204549698U - There is the bidirectional speed limiter of ratchet auto-reset function - Google Patents
There is the bidirectional speed limiter of ratchet auto-reset function Download PDFInfo
- Publication number
- CN204549698U CN204549698U CN201520185351.4U CN201520185351U CN204549698U CN 204549698 U CN204549698 U CN 204549698U CN 201520185351 U CN201520185351 U CN 201520185351U CN 204549698 U CN204549698 U CN 204549698U
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- ratchet
- reset
- rope sheave
- location structure
- speed limiter
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Abstract
The utility model discloses a kind of bidirectional speed limiter with ratchet auto-reset function, on its base, coaxial rotation is equipped with rope sheave and ratchet, both sides in rope sheave on base are provided with brake plate device, the side of the wheel face of rope sheave is rotatably equipped with ratchet, ratchet torsion spring is provided with between ratchet and rope sheave, the wheel face of rope sheave is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the top pressure side of ratchet location structure and pawl spring top force fit, described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, described ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion.Ratchet of the present utility model and ratchet location structure do not need manual reset, can be used in machine-roomless lift.
Description
Technical field
The utility model relates to a kind of velocity limiter for limiting elevator speed, particularly relates to a kind of bidirectional speed limiter with ratchet auto-reset function.
Background technology
Velocity limiter is the critical component of elevator safety, of the prior art have a kind of such bidirectional speed limiter, so-called bidirectional speed limiter be exactly ascending for elevator and descending time the velocity limiter that can play a role, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, and rope sheave is arranged with steel rope.The diameter of ratchet is less than the diameter of rope sheave, the wheel face of rope sheave is rotatably equipped with ratchet, torsion spring is provided with between ratchet and rope sheave, torsion spring, to Pawl Torsion, makes ratchet rotate and has the trend of joining with the draw-in groove card of ratchet all the time, when ratchet is in free state, ratchet and ratchet can be in the state of clamping, the termination of ratchet is convexly equipped with a fixture block, the both sides of fixture block can two cell wall blocks of draw-in groove, prevent ratchet on cw and conter clockwise both direction relative to detent.Rope sheave also rotates and is provided with ratchet location structure, ratchet location structure has a top pressure side, this pressure side top, top is pressed on ratchet, ratchet is made to be in the normal condition decontroling ratchet, between ratchet location structure and rope sheave, there is torsion spring, torsion spring compresses the power of ratchet for ratchet location structure provides, ratchet is made to overcome torsion spring power on it, keep the state be separated with ratchet, rope sheave is also rotatably equipped with two gravity drop hammers, ratchet and ratchet location structure are in the side of rope sheave, and two gravity drop hammers are in the other side of rope sheave.The set-up mode of two gravity drop hammers on rope sheave is centrosymmetric mode, the run-on point of gravity drop hammer is not in two ends, one end quality more greatly tup end of gravity drop hammer, other end quality is less is hammer handle end, compression-spring device is provided with between the hammer handle end of a gravity drop hammer and rope sheave, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, connecting rod is connected with between the tup portion and the hammer handle portion of another gravity drop hammer of this gravity drop hammer, 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 influence of centrifugal force, the spring force that two gravity drop hammers can overcome compression-spring device opens, and two tups all can turn to the edge of rope sheave, and two hammer handles turn to the center of rope sheave.Ratchet location structure has 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 to the top of projection in the pressure trigger unit of top, the power making ratchet location structure overcome its torsion spring is rotated, ratchet location structure compresses ratchet, ratchet is made to continue to rotate to the direction away from ratchet, along with the increase of rotation distance, ratchet location structure can decontrol ratchet, ratchet is stuck with ratchet under the effect of its torsion spring, after ratchet location structure decontrols ratchet, ratchet will be crossed ratchet location structure and keep off ratchet location structure conversely, ratchet location structure can not be resetted, at this moment, ratchet location structure pushes up pressure ratchet under the effect of torsion spring power, ratchet failure-free is made to be in the state with ratchet buckle, in this state, it is made to rotate lasting rotation to the direction away from ratchet if move ratchet, ratchet will be separated with ratchet location structure, ratchet location structure is return under the effect of its torsion spring, at this moment ratchet is decontroled, ratchet location structure will be located with ratchet.When ratchet failure-free is in the state with ratchet buckle, rope sheave drives pawl wheel by ratchet.Both sides in rope sheave on base are provided with brake plate device, the slipper of two brake plate devices is provided with pull bar, one end of pull bar is located on slipper, the side that two slippers are relative with rope sheave is medial surface, another side is lateral surface, has outside spring in the arranged outside of slipper, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end top of outside spring is pressed on the bulge loop on the termination of pull bar, and other one end handing-over of pull bar is on the wheel face of ratchet.When elevator rises, rope sheave rotates toward a direction, and after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and rotated, ratchet drives corresponding slipper to press to rope sheave when rotating by a pull bar, realize the braking of rope sheave, when rising under elevator, rope sheave rotates toward another direction, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, and ratchet drives another corresponding slipper to press to rope sheave when rotating by another pull bar, 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, when allowing ratchet and ratchet be in released state, ratchet still cannot return, needs manual override's torsion spring power to rotate ratchet, make ratchet return and locate with ratchet location structure, in machine-roomless lift, workman cannot carry out the reset of ratchet, and causing this kind of velocity limiter cannot use in machine-roomless lift.
Utility model content
The purpose of this utility model is to provide a kind of bidirectional speed limiter with ratchet auto-reset function, to solve the problem that in prior art, velocity limiter cannot use in machine-roomless lift.
In order to realize above object, the utility model adopts following technical scheme: a kind of bidirectional speed limiter with ratchet auto-reset function, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, both sides in rope sheave on base are provided with brake plate device, the side of the wheel face of rope sheave is rotatably equipped with ratchet, the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined is provided with between ratchet and rope sheave, the wheel face of rope sheave is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the top pressure side of ratchet location structure and pawl spring top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, the trigger unit of ratchet location structure is convexly equipped with when the tup of gravity drop hammer turns to the outer rim of rope sheave and the top of power hammer press-fit, it is characterized in that: described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, described ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion.
Described reset contact is the U-shaped part with two sidewalls and a bottom bent by strip board, the corresponding end of fixed mount stretches between two sidewalls of reset contact, reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount, the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.
Described bidirectionally limited structure comprises two bottoms screwing in reset contact and stretches to the top pressure screw of fixed mount, and two top pressure screws are in the both sides of described rotating shaft respectively.
Described reset contact is away from the sidewall of pushing tooth and be provided with between fixed mount and make reset inclined-plane press to the extension spring pushing tooth.
Described fixed mount comprises the adapter plate for being fixed on ratchet, and the both sides of adapter plate are wholely set for rotating the ear of assembling with reset contact in the work end of ratchet.
Described adapter plate is wholely set the protuberance for fixing extension spring away from work end.
Described disc is sheet ring body, and on the inner hole wall of disc, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.
Described pushing tooth is arranged on disc by the connecting strap be wholely set on disc, and described connecting strap is wholely set with pushing tooth.
Ratchet of the present utility model has fixedly been sticked disc, pushing tooth on disc can push the reset attachment on ratchet when ratchet reverses, ratchet is rotated to the direction away from ratchet, and ratchet is separated with ratchet location structure, and ratchet is answered and ratchet location structure resets, return normal condition, ratchet is in decontrols the state of ratchet, does not need manual reset ratchet, carry out overhauling at service personnel, reverse ratchet time, ratchet will automatically reset, and 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 the assembling schematic diagram of rope sheave in Fig. 1 and ratchet;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right elevation of Fig. 2;
Fig. 5 is the assembly drowing of ratchet in Fig. 1 and disc;
Fig. 6 is the assembly drowing of ratchet in Fig. 1 and reset attachment;
Fig. 7 is the right elevation of Fig. 6.
Detailed description of the invention
A kind of embodiment with the bidirectional speed limiter of ratchet auto-reset function, in Fig. 1 ~ 7, so-called bidirectional speed limiter be exactly ascending for elevator and descending time the velocity limiter that can play a role, on its base 1, coaxial rotation is equipped with rope sheave 2 and ratchet 3, and rope sheave 2 is arranged with steel rope.The diameter of ratchet 3 is less than the diameter of rope sheave 2, the wheel face of rope sheave 2 is rotatably equipped with ratchet 4, torsion spring is provided with between ratchet 4 and rope sheave 2, torsion spring is to ratchet 4 torsion, ratchet 4 is rotated there is the trend of joining with the draw-in groove card of ratchet 3 all the time, when ratchet 4 is in free state, ratchet 4 and ratchet 3 can be in the state of clamping, rope sheave 2 also rotates and is 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, ratchet 4 is made to be in the normal condition decontroling ratchet 3, between ratchet location structure 6 and rope sheave 2, there is torsion spring, torsion spring compresses the power of ratchet 4 for ratchet location structure 6 provides, ratchet 4 is made to overcome torsion spring power on it, keep the state be separated with ratchet 3, rope sheave 2 is also rotatably equipped with two gravity drop hammers 5, ratchet 4 and ratchet location structure 6 are in the side of rope sheave 2, two gravity drop hammers 5 are in the other side of rope sheave 2.The set-up mode of two gravity drop hammers 5 on rope sheave 2 is centrosymmetric mode, the run-on point of gravity drop hammer 5 is not in two ends, one end quality more greatly tup end of gravity drop hammer 5, other end quality is less is hammer handle end, compression-spring device 11 is provided with between the hammer handle end of a gravity drop hammer 5 and rope sheave 2, compression-spring device 11 makes the tup end of gravity drop hammer 5 be in the centre of rope sheave 2, connecting rod 10 is connected with between the tup portion and the hammer handle portion of another gravity drop hammer 5 of this gravity drop hammer 5, 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 influence of centrifugal force, the spring force that two gravity drop hammers 5 can overcome compression-spring device 11 opens, and two tups all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2.Ratchet location structure 6 has 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 to the top of projection in the pressure trigger unit of top, the power making ratchet location structure 6 overcome its torsion spring is rotated, ratchet location structure 6 compresses ratchet 4, ratchet 4 is made to continue to rotate to the direction away from ratchet 3, along with the increase of rotation distance, ratchet location structure 6 can decontrol ratchet 4, ratchet 4 is stuck with ratchet 3 under the effect of its torsion spring, after ratchet location structure 6 decontrols ratchet 4, ratchet 4 will be crossed ratchet location structure 6 and keep off ratchet location structure 6 conversely, ratchet location structure 6 can not be resetted, at this moment, ratchet location structure 6 pushes up pressure ratchet 4 under the effect of torsion spring power, ratchet 4 failure-free is made to be in the state with ratchet 3 buckle.In this state, if the buckle between ratchet 4 and ratchet 3 will be contacted.Ratchet 4 and ratchet location structure 6 are replied and mutually pushes up pressure, when making ratchet 4 remain on the state be separated with ratchet 3, just can move ratchet 4 makes it rotate lasting rotation to the direction away from ratchet 3, ratchet 4 will be separated 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.Base 1 is provided with brake plate device in the both sides of rope sheave 2, the slipper of two brake plate devices is provided with pull bar, one end of pull bar is located on slipper, the side that two slippers are relative with rope sheave 2 is medial surface, another side is lateral surface, has outside spring in the arranged outside of slipper, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end top of outside spring is pressed on the bulge loop on the termination of pull bar, and other one end handing-over of pull bar is on the wheel face of ratchet 3.When elevator rises, rope sheave 2 rotates toward a direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, ratchet 3 drives corresponding slipper to press to rope sheave 2 when rotating by a pull bar, realize the braking of rope sheave 2, when rising under elevator, rope sheave 2 rotates toward another direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, and ratchet 3 drives another corresponding slipper to press to rope sheave 2 when rotating by another pull bar, realizes the braking of rope sheave 2.
The wheel face of that side away from gravity drop hammer of ratchet 3 is fixedly installed disc 7, and disc 7 is sheet ring body, and on the inner hole wall of disc 7, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.The outer rim of disc 7 is laid with connecting strap 8, connecting strap 8 and disc 7 are wholely set, and connecting strap and disc 7 coplanar, connecting strap 8 is inclined on disc, that is connecting strap 8 is not extend along the radial direction of disc, and the direction of tilt of connecting strap 8 is consistent with the direction of tilt of the ratchet gear teeth.The side of connecting strap 8 has pushing tooth 9, and pushing tooth 9 and connecting strap 8 are one, and pushing tooth 9 is mutually vertical with connecting strap 8, and pushing tooth 9 is also inclination and the direction of tilt of the direction of tilt and the ratchet gear teeth that push tooth 8 is also the same like this.Ratchet 4 is also fixed with reset attachment, reset attachment has a fixed mount, and fixed mount has an adapter plate 12, and adapter plate 12 is adjacent on the lateral surface of ratchet, so-called lateral surface refers to the face be near rope sheave outer rim, namely away from the face at rope sheave center.Adapter plate 12 is fixed by screws on ratchet, is respectively provided with the working end head end that an ear of ear 13, Liang Ge 13 is all in ratchet in the both sides of adapter plate.Reset attachment also has a reset contact 14, reset contact 14 is the U-shaped part with two sidewalls and a bottom bent by strip board, one end arranging ear of fixed mount is stretched between two sidewalls of reset contact 14, and rotating shaft is rotated through two sidewalls of reset contact and Liang Ge ear thus by reset contact simultaneously and is assemblied on fixed mount.Two top pressure screws are installed with in the bottom of reset contact, two top pressure screws stretch to adapter plate, two top pressure screws are in the both sides of rotating shaft respectively, like this when reset contact is rotated relative to fixed mount, two level pressure screws will encounter adapter plate, such reset contact just has a rotation space, and two top pressure screws can be that reset contact is spacing in the two directions.That sidepiece near pushing tooth of reset contact has the direction of tilt inclined-plane consistent with the direction of tilt of pushing tooth, this inclined-plane is reset inclined-plane 15, when ratchet reversion, disc and then rotates, pushing tooth will push reset inclined-plane and with reset inclined-plane bearing fit, reset contact is rotated with ratchet, makes ratchet decontrol ratchet and locate with ratchet location structure.
The corresponding end of fixed mount stretches between two sidewalls of reset contact, and reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount, and the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.Reset contact away from pushing tooth sidewall on and be provided with extension spring 16 between fixed mount, one end of extension spring 16 is fixed on the position of adapter plate away from ratchet work termination, and this position has been wholely set protuberance 17, and extension spring is fixed on this protuberance 17.The other end of fixing extension spring is fixed on the position being in the inner side of rotating shaft of the sidewall of reset contact, and so-called inner side refers to the side near ratchet center, and reset inclined-plane can be made like this to press to pushing tooth.Reset contact is away from the sidewall of pushing tooth that sidewall not arranging reset inclined-plane.
Reset contact in the present embodiment rotates to be assemblied on fixed mount, Double-directional rotary position limiting structure is two screws, adjust the degree of depth that these two screws screw in bottom spacing contact and just can adjust the angle of reset contact relative to fixed mount, thus the angle on adjustment reset inclined-plane, the angle of rotating to make ratchet guarantees that enough greatly ratchet and ratchet location structure reset, certainly, also can directly reset contact be fixed on ratchet in other are implemented, ratchet so also can be made to reverse and reset.
Claims (9)
1. one kind has the bidirectional speed limiter of ratchet auto-reset function, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, both sides in rope sheave on base are provided with brake plate device, the side of the wheel face of rope sheave is rotatably equipped with ratchet, the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined is provided with between ratchet and rope sheave, the wheel face of rope sheave is also rotatably equipped with ratchet location structure, location torsion spring is provided with between ratchet location structure and rope sheave, the top pressure side of ratchet location structure and pawl spring top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, the trigger unit of ratchet location structure is convexly equipped with when the tup of gravity drop hammer turns to the outer rim of rope sheave and the top of power hammer press-fit, it is characterized in that: described ratchet is coaxially fixedly installed disc away from the wheel face of gravity drop hammer, the outer rim of disc is laid with the direction of tilt pushing tooth consistent with the direction of tilt of the ratchet gear teeth, described ratchet is fixed with reset attachment, reset attachment has after ratchet locking ratchet, the reset inclined-plane of ratchet pawl reset is made with pushing tooth slip press-fit during ratchet reversion.
2. the bidirectional speed limiter with ratchet auto-reset function according to claim 1, it is characterized in that: described reset attachment comprises fixed mount, fixed mount is fixed on the lateral surface of ratchet, fixed mount is equipped with the reset contact of stretching to pushing tooth near one end of ratchet work termination by rotating shaft, be provided with Double-directional rotary position limiting structure between described reset contact and fixed mount, described reset inclined-plane is arranged in described reset contact.
3. the bidirectional speed limiter with ratchet auto-reset function according to claim 2, it is characterized in that: described reset contact is the U-shaped part with two sidewalls and a bottom bent by strip board, the corresponding end of fixed mount stretches between two sidewalls of reset contact, reset contact has been passed through two sidewalls rotations and has been assemblied on fixed mount, the opening of reset contact is towards ratchet core wheel direction, and described reset inclined-plane is arranged on reset contact on the sidewall of pushing tooth.
4. the bidirectional speed limiter with ratchet auto-reset function according to claim 3, it is characterized in that: described bidirectionally limited structure comprises two bottoms screwing in reset contact and stretches to the top pressure screw of fixed mount, and two top pressure screws are in the both sides of described rotating shaft respectively.
5. the bidirectional speed limiter with ratchet auto-reset function according to claim 4, is characterized in that: described reset contact is away from the sidewall of pushing tooth and be provided with between fixed mount and make reset inclined-plane press to the extension spring pushing tooth.
6. the bidirectional speed limiter with ratchet auto-reset function according to claim 5, it is characterized in that: described fixed mount comprises the adapter plate for being fixed on ratchet, the both sides of adapter plate are wholely set for rotating the ear of assembling with reset contact in the work end of ratchet.
7. the bidirectional speed limiter with ratchet auto-reset function according to claim 6, is characterized in that: described adapter plate is wholely set the protuberance for fixing extension spring away from work end.
8. the bidirectional speed limiter with ratchet auto-reset function as claimed in any of claims 1 to 7, it is characterized in that: described disc is sheet ring body, on the inner hole wall of disc, radial direction is laid with fixing calvus, and fixing calvus is fixed by screws on disc.
9. the bidirectional speed limiter with ratchet auto-reset function according to claim 8, is characterized in that: described pushing tooth is arranged on disc by the connecting strap be wholely set on disc, and described connecting strap is wholely set with pushing tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520185351.4U CN204549698U (en) | 2015-03-31 | 2015-03-31 | There is the bidirectional speed limiter of ratchet auto-reset function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520185351.4U CN204549698U (en) | 2015-03-31 | 2015-03-31 | There is the bidirectional speed limiter of ratchet auto-reset function |
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| Publication Number | Publication Date |
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| CN204549698U true CN204549698U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520185351.4U Withdrawn - After Issue CN204549698U (en) | 2015-03-31 | 2015-03-31 | There is the bidirectional speed limiter of ratchet auto-reset function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
-
2015
- 2015-03-31 CN CN201520185351.4U patent/CN204549698U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20181113 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150812 Effective date of abandoning: 20181113 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |