CN111946786A - Sheave device provided with auxiliary braking mechanism - Google Patents
Sheave device provided with auxiliary braking mechanism Download PDFInfo
- Publication number
- CN111946786A CN111946786A CN202010747639.1A CN202010747639A CN111946786A CN 111946786 A CN111946786 A CN 111946786A CN 202010747639 A CN202010747639 A CN 202010747639A CN 111946786 A CN111946786 A CN 111946786A
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- rod
- wheel
- connecting rod
- transverse
- fixed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H27/00—Step-by-step mechanisms without freewheel members, e.g. Geneva drives
- F16H27/04—Step-by-step mechanisms without freewheel members, e.g. Geneva drives for converting continuous rotation into a step-by-step rotary movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D63/00—Brakes not otherwise provided for; Brakes combining more than one of the types of groups F16D49/00 - F16D61/00
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a sheave device provided with an auxiliary brake mechanism, which comprises: a machine base; a grooved wheel; a main brake mechanism; still include auxiliary brake mechanism, it includes the support, tensile piece, the connecting rod, the braked wheel, the direction subassembly, second cam and pendulum rod, support one end is fixed in the frame top, tensile piece one end is fixed in the support, the other end is fixed in connecting rod one end, the connecting rod other end with set up in the pivot of the pendulum rod left end portion of sheave one side, pendulum rod right-hand member and with the pivot of first cam butt complex second cam, direction subassembly part sets up in the longitudinal side wall of frame, another part passes through the braked wheel pin joint in the connecting rod, the braked wheel is along the orientation and the straight line sliding fit of long notch that deviates from or is close to the direction of the center of rotation point. Compared with the prior art, the auxiliary braking mechanism is arranged, the stopping circular arc of the stopping wheel completely enters the grooved wheel, so that the stopping wheel can be more accurately positioned on the grooved wheel, the interference between the stopping wheel and the grooved wheel is avoided, and the grooved wheel is prevented from shaking.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, and relates to a sheave device provided with an auxiliary braking mechanism.
Background
At present, a sheave device is an intermittent motion mechanism, when a certain load is applied to a sheave, the sheave drives the load to perform intermittent rotation, and the moment of inertia of the load during starting and stopping is required to be provided by the sheave device to provide starting acceleration and braking counter acceleration.
In the prior art there is a sheave arrangement comprising: a machine base; the grooved wheel is provided with a wheel body, a plurality of arc notches and a plurality of long notches which are arranged on the wheel body; the main braking mechanism is provided with a first cam, a stop wheel and a shifting pin, wherein the first cam rotates along the circumferential direction, the stop arc of the stop wheel is in positioning fit with the arc notch, and the shifting pin is in sliding fit with the long notch. The sheave is braked by using the structure, and the problems are that: the existing sheave device drives a sheave to move by means of the rotation of a shift pin entering a long groove opening of the sheave, when the shift pin leaves the long groove opening of the sheave, a locking arc of a stop wheel enters an arc groove opening of the sheave along with the shift pin, the arc groove opening is tangent with the locking arc of the stop wheel, and the sheave is locked by the locking arc at the moment; because a certain time vacancy exists between the sliding of the shift pin out of the long groove opening and the entering of the locking arc into the groove, the grooved wheel is in an unconstrained state or an under-constrained state, if the rotational inertia of the grooved wheel load is large, the grooved wheel is not accurately positioned, and the groove wheel is interfered by the locking arc in the process of completely entering the grooved wheel, so that the grooved wheel shakes.
To this end, the present invention provides a sheave device provided with an auxiliary brake mechanism.
Disclosure of Invention
In view of the above problems of the prior art, an object of the present invention is to provide a sheave device provided with an auxiliary brake mechanism, which can prevent a sheave from being shaken.
The purpose of the invention can be realized by the following technical scheme:
a sheave apparatus provided with an auxiliary brake mechanism, comprising:
a machine base;
the grooved wheel is provided with a wheel body, a plurality of arc notches and a plurality of long notches which are arranged on the wheel body;
the main braking mechanism is provided with a first cam, a stop wheel and a shifting pin, wherein the first cam rotates along the circumferential direction, a stop arc of the stop wheel is in positioning fit with the arc notch, and the shifting pin is in sliding fit with the long notch;
also comprises the following components in part by weight,
the auxiliary braking mechanism comprises a support, a stretching part, a connecting rod, a braking wheel, a guiding component, a second cam and a swinging rod, wherein one end of the support is fixed at the top of the machine base, one end of the stretching part is fixed at the support, the other end of the stretching part is fixed at one end of the connecting rod, the other end of the connecting rod is pivoted with the left end part of the swinging rod arranged on one side of the grooved wheel, the right end part of the swinging rod is pivoted with the second cam in butt fit with the first cam, one part of the guiding component is arranged on the longitudinal side wall of the machine base, the other part of the guiding component is pivoted with the connecting rod through the braking wheel.
The sheave device provided with the auxiliary braking mechanism is characterized in that: the guide assembly comprises a guide sleeve and a guide rod, the guide sleeve is embedded into the longitudinal side wall of the machine base along the transverse direction, and the end part of the guide rod far away from the direction of the grooved wheel slidably extends into a sleeve cavity of the guide sleeve.
The sheave device provided with the auxiliary braking mechanism is characterized in that: the connecting rod comprises a longitudinal rod part and an inclined rod part extending out of the top of the longitudinal rod part, the longitudinal rod part is pivoted to the rear side wall of the cavity of the machine base, and the inclined rod part and the longitudinal rod part form an included angle; wherein
The end part of the longitudinal rod part is pivoted with the left end part of the swing rod, and the top inclined end of the inclined rod part is fixed with the end part of the stretching part.
The sheave device provided with the auxiliary braking mechanism is characterized in that: the stretching piece comprises a transverse cylinder, a first transverse rod, a spring and a second transverse rod, one end of the first transverse rod is fixed on the side wall of the bracket, the spring is arranged in the transverse cylinder, and the other end of the first transverse rod extends into the transverse cylinder and is fixed with one end of the spring;
one end of the second transverse rod is pivoted with the end part of the connecting rod, and the other end of the second transverse rod extends into the transverse cylinder and is fixed with the other end of the spring.
As described above, the sheave device provided with the auxiliary brake mechanism according to the present invention has the following advantages:
after the sheave device provided with the auxiliary braking mechanism is utilized, compared with the prior art, due to the adoption of the structure, the auxiliary braking mechanism is arranged, the second cam and the swing rod of the auxiliary braking mechanism are linked with the rotation action of the poking pin, when the poking pin slides out of the long notch of the sheave, the connecting rod enables the braking wheel to be inserted into the long notch of the sheave in a sliding manner, the sheave is braked firstly, then the stopping circular arc of the stopping wheel completely enters the sheave, so that the stopping wheel can be more accurately positioned on the sheave, the interference between the stopping wheel and the sheave is avoided, and the sheave is prevented from shaking.
The present invention will be further described with reference to the following embodiments.
Drawings
Fig. 1 is a partial structural sectional view of a sheave device provided with an auxiliary brake mechanism.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications. The specific structure can be explained with reference to the drawings of the patent application.
In the following embodiments, the left side of the paper surface is the left direction, the right side of the paper surface is the right direction, the upper side of the paper surface is the upper direction, the lower side of the paper surface is the lower direction, the front side perpendicular to the paper surface is the front direction, and the rear side perpendicular to the paper surface is the rear direction.
The present invention provides a sheave device provided with an auxiliary braking mechanism, as shown in fig. 1, which includes:
a machine base 1;
the grooved wheel 2 is provided with a wheel body 20, a plurality of arc notches 21 and a plurality of long notches 22 which are arranged on the wheel body 20;
the main braking mechanism 3 is provided with a first cam 30, a stop wheel 31 and a pulling pin 32, wherein the first cam 30 rotates along the circumferential direction, a stop arc 310 of the stop wheel 31 is in positioning fit with the circular arc notch 21, and the pulling pin 32 is in sliding fit with the long notch 22;
also comprises the following components in part by weight,
the auxiliary brake mechanism 4 comprises a bracket 40, a stretching part 41, a connecting rod 42, a brake wheel 43, a guide assembly 44, a second cam 45 and a swing rod 46, one end of the bracket 40 is fixed at the top of the machine base 1, one end of the stretching part 41 is fixed at the bracket 40, the other end of the stretching part is fixed at one end of the connecting rod 42, the other end of the connecting rod 42 is pivoted with the left end part of the swing rod 46 arranged at one side of the grooved wheel 2, the right end part of the swing rod 46 is pivoted with the second cam 45 in butt fit with the first cam 30, one part of the guide assembly 44 is arranged on the longitudinal side wall of the machine base 1, the other part of the guide assembly is pivoted with the connecting rod 42 through the brake wheel 43, and the brake. Compared with the prior art, the invention adopts the structure, the auxiliary braking mechanism 4 is arranged, the second cam 45 and the swing rod 46 of the auxiliary braking mechanism 4 are linked with the rotation action of the poking pin 32, when the poking pin 32 slides out of the long notch 21 of the grooved wheel 2, the connecting rod enables the braking wheel 43 to be inserted into the long notch of the grooved wheel 2 in a sliding way, the grooved wheel 2 is braked firstly, then the stopping arc 310 of the stopping wheel 31 completely enters the grooved wheel 2, so that the stopping wheel 31 can more accurately position the grooved wheel 2, the interference between the stopping wheel 31 and the grooved wheel 2 is avoided, and the grooved wheel 2 is prevented from shaking.
In the embodiment shown in fig. 1, the guide assembly 44 includes a guide sleeve 440 and a guide rod 441, the guide sleeve 440 is embedded in the longitudinal side wall of the housing 1 along the transverse direction, and the end of the guide rod 441 far away from the sheave 2 slides and extends into the sleeve cavity of the guide sleeve 440.
As shown in fig. 1, in this embodiment, the connecting rod 42 includes a longitudinal rod portion 420 and an inclined rod portion 421 extending along a top of the longitudinal rod portion 420, the longitudinal rod portion 420 is pivotally connected to a rear sidewall of the cavity of the machine base 1, and the inclined rod portion 421 and the longitudinal rod portion 420 form an included angle; wherein
The end of the longitudinal rod part 420 is pivoted with the left end of the swing rod 46, and the top inclined end of the inclined rod part 421 is fixed with the end of the stretching member 41.
As shown in fig. 1, in this embodiment, the stretching member 41 includes a transverse tube 410, a first transverse rod 411, a spring 412, and a second transverse rod 413, one end of the first transverse rod 411 is fixed to a side wall of the bracket 40, the spring 412 is embedded in the transverse tube 410, and the other end of the first transverse rod 411 extends into the transverse tube 410 and is fixed to one end of the spring 412;
one end of the second transverse rod 413 is pivotally connected to the end of the connecting rod 42, and the other end of the second transverse rod 413 extends into the transverse cylinder 410 and is fixed to the other end of the spring 412.
It should be noted that the working principle of the present invention is as follows: as shown in fig. 1, when the pin 32 on the side of the sheave 2 is in the idle state, the braking wheel 43 and the arc 310 of the braking wheel 31 simultaneously brake the sheave 2; when the shift pin 32 is ready to enter the long notch 21 of the sheave 2, the first cam 30 increases the rotation radius and the swing rod 46 is pushed open by the second cam 45, the swing rod 46 makes the connecting rod 42 drive the brake wheel 43 to swing clockwise, so that the shaft of the brake wheel 43 can slide on the long slot (not shown) on the connecting rod 42, the guide rod 441 connected with the brake wheel 43 makes linear motion under the action of the guide sleeve 440, and the brake wheel 43 makes linear motion under the aforementioned interaction to exit the long notch 21; at the moment, the pin 32 enters the long notch 21 of the sheave 2, so that the pin 32 shifts the sheave 2, and the arc notch 22 of the sheave 2 is also separated from the stop arc 310 at the moment; when the shifting pin 32 is ready to slide out of the long notch 22, the rotation radius of the first cam 30 is reduced, the swing rod moves counterclockwise under the action of the spring 412, and at the moment, the brake wheel 43 slides linearly under the guidance of the long slot of the connecting rod 42 and the guide sleeve of the guide rod 441, so that the brake wheel 43 enters the long notch 22 of the sheave 2 for braking; when the pin 32 slides out of the long notch 22 completely, the stop arc 310 is positioned accurately with the arc notch 22 of the sheave 2 completely, and in the process, interference between the stop wheel 31 and the sheave 2 is avoided, so that the sheave 2 is prevented from shaking.
As described above, the sheave device provided with the auxiliary brake mechanism according to the present invention has the following advantages:
after the sheave device provided with the auxiliary braking mechanism is utilized, compared with the prior art, due to the adoption of the structure, the auxiliary braking mechanism is arranged, the second cam and the swing rod of the auxiliary braking mechanism are linked with the rotation action of the poking pin, when the poking pin slides out of the long notch of the sheave, the connecting rod enables the braking wheel to be inserted into the long notch of the sheave in a sliding manner, the sheave is braked firstly, then the stopping circular arc of the stopping wheel completely enters the sheave, so that the stopping wheel can be more accurately positioned on the sheave, the interference between the stopping wheel and the sheave is avoided, and the sheave is prevented from shaking.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (4)
1. A sheave apparatus provided with an auxiliary brake mechanism, comprising:
a machine base;
the grooved wheel is provided with a wheel body, a plurality of arc notches and a plurality of long notches which are arranged on the wheel body;
the main braking mechanism is provided with a first cam, a stop wheel and a shifting pin, wherein the first cam rotates along the circumferential direction, a stop arc of the stop wheel is in positioning fit with the arc notch, and the shifting pin is in sliding fit with the long notch;
characterized by also comprising the following components,
the auxiliary braking mechanism comprises a support, a stretching part, a connecting rod, a braking wheel, a guiding component, a second cam and a swinging rod, wherein one end of the support is fixed at the top of the machine base, one end of the stretching part is fixed at the support, the other end of the stretching part is fixed at one end of the connecting rod, the other end of the connecting rod is pivoted with the left end part of the swinging rod arranged on one side of the grooved wheel, the right end part of the swinging rod is pivoted with the second cam in butt fit with the first cam, one part of the guiding component is arranged on the longitudinal side wall of the machine base, the other part of the guiding component is pivoted with the connecting rod through the braking wheel.
2. The sheave apparatus provided with an auxiliary brake mechanism as claimed in claim 1, wherein: the guide assembly comprises a guide sleeve and a guide rod, the guide sleeve is embedded into the longitudinal side wall of the machine base along the transverse direction, and the end part of the guide rod far away from the direction of the grooved wheel slidably extends into a sleeve cavity of the guide sleeve.
3. The sheave apparatus provided with an auxiliary brake mechanism as claimed in claim 1 or 2, wherein: the connecting rod comprises a longitudinal rod part and an inclined rod part extending out of the top of the longitudinal rod part, the longitudinal rod part is pivoted to the rear side wall of the cavity of the machine base, and the inclined rod part and the longitudinal rod part form an included angle; wherein
The end part of the longitudinal rod part is pivoted with the left end part of the swing rod, and the top inclined end of the inclined rod part is fixed with the end part of the stretching part.
4. The sheave apparatus provided with an auxiliary brake mechanism as claimed in claim 1 or 2, wherein: the stretching piece comprises a transverse cylinder, a first transverse rod, a spring and a second transverse rod, one end of the first transverse rod is fixed on the side wall of the bracket, the spring is arranged in the transverse cylinder, and the other end of the first transverse rod extends into the transverse cylinder and is fixed with one end of the spring;
one end of the second transverse rod is pivoted with the end part of the connecting rod, and the other end of the second transverse rod extends into the transverse cylinder and is fixed with the other end of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747639.1A CN111946786B (en) | 2020-07-30 | 2020-07-30 | Sheave device provided with auxiliary braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010747639.1A CN111946786B (en) | 2020-07-30 | 2020-07-30 | Sheave device provided with auxiliary braking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111946786A true CN111946786A (en) | 2020-11-17 |
| CN111946786B CN111946786B (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010747639.1A Active CN111946786B (en) | 2020-07-30 | 2020-07-30 | Sheave device provided with auxiliary braking mechanism |
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| Country | Link |
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| CN (1) | CN111946786B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB424298A (en) * | 1933-11-21 | 1935-02-19 | Leslie Herbert Leedham | Improvements in or relating to knitting machines |
| SU530983A1 (en) * | 1973-07-06 | 1976-10-05 | Украинский Научно-Исследовательский И Конструкторский Институт Продовольственного Машиностроения | Device for balancing Maltese mechanisms |
| CN2781088Y (en) * | 2005-01-18 | 2006-05-17 | 天津科技大学 | Low secondary geneva mechanism |
| CN202284632U (en) * | 2011-09-29 | 2012-06-27 | 大连新翔机械有限公司 | Intermittent type rotation mechanism |
| CN103206504A (en) * | 2013-03-21 | 2013-07-17 | 佛山华工祥源环保包装有限公司 | Buffered sheave driving mechanism |
| CN104251293A (en) * | 2013-06-30 | 2014-12-31 | 郭伟 | Dual-wheel driven intermittent rotary workbench |
-
2020
- 2020-07-30 CN CN202010747639.1A patent/CN111946786B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB424298A (en) * | 1933-11-21 | 1935-02-19 | Leslie Herbert Leedham | Improvements in or relating to knitting machines |
| SU530983A1 (en) * | 1973-07-06 | 1976-10-05 | Украинский Научно-Исследовательский И Конструкторский Институт Продовольственного Машиностроения | Device for balancing Maltese mechanisms |
| CN2781088Y (en) * | 2005-01-18 | 2006-05-17 | 天津科技大学 | Low secondary geneva mechanism |
| CN202284632U (en) * | 2011-09-29 | 2012-06-27 | 大连新翔机械有限公司 | Intermittent type rotation mechanism |
| CN103206504A (en) * | 2013-03-21 | 2013-07-17 | 佛山华工祥源环保包装有限公司 | Buffered sheave driving mechanism |
| CN104251293A (en) * | 2013-06-30 | 2014-12-31 | 郭伟 | Dual-wheel driven intermittent rotary workbench |
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| Publication number | Publication date |
|---|---|
| CN111946786B (en) | 2022-08-09 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A groove wheel device for setting auxiliary braking mechanism Effective date of registration: 20230515 Granted publication date: 20220809 Pledgee: China Construction Bank Corporation Guangzhou Development Zone Branch Pledgor: HGHY PULP MOLDING PACK CO.,LTD. Registration number: Y2023980040544 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |