CN212198290U - Worm gear type ratchet wheel type winding mechanism - Google Patents
Worm gear type ratchet wheel type winding mechanism Download PDFInfo
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- CN212198290U CN212198290U CN202020347394.9U CN202020347394U CN212198290U CN 212198290 U CN212198290 U CN 212198290U CN 202020347394 U CN202020347394 U CN 202020347394U CN 212198290 U CN212198290 U CN 212198290U
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Abstract
The utility model discloses a worm wheel type ratchet wheel type hoisting mechanism, which comprises a motor, a winding drum and a pawl type worm gear one-way force transmission speed reducing mechanism, the motor comprises an ascending motor and a descending motor, the pawl type worm gear and worm one-way force transmission speed reducing mechanism comprises an output shaft, a centering disc, a ratchet wheel, a worm wheel, a pawl and a worm, the ratchet wheel is fixed on the output shaft and rotates along with the output shaft, the centering disc and the worm wheel are sleeved on the output shaft through a bearing but do not rotate along with the output shaft, the centering disc is positioned on the left side of the ratchet wheel, the worm wheel is positioned on the right side of the ratchet wheel, one end of a connecting shaft is fixed on the centering disc, the other end of the connecting shaft is fixed on the worm wheel, the pawl is arranged on the connecting shaft, one end of, the ascending motor is connected with the left end of the winding drum, the right end of the winding drum is connected with the output shaft, and the descending motor is connected with the worm. The lifting mechanism has an automatic locking function, the lifting motor and the descending motor only need to rotate in one direction, and the failure rate is low.
Description
Technical Field
The utility model belongs to the technical field of machinery and specifically relates to a worm gear formula ratchet type hoisting mechanism.
Background
The winding machine is a mechanism which drives a winding drum to rotate by a motor and lifts or pulls a heavy object by a steel wire rope or a chain wound on the winding drum. The existing hoisting mechanisms are all formed by connecting a motor with a winding drum, and the ascending and descending of a heavy object connected with a steel wire on the winding drum are realized through the positive rotation and the reverse rotation of the motor. The motor of the mechanism needs to rotate forwards and backwards, is complex to control and is easy to break down. In addition, when the motor stops rotating after the heavy object rises, the heavy object easily slides down due to the gravity action of the heavy object, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a worm gear type ratchet wheel type hoisting mechanism.
The utility model aims at solving present hoist mechanism and not only wanting corotation but also reversing, control is loaded down with trivial details, and breaks down easily, when the heavy object rises back motor stall, because heavy object self action of gravity takes place the gliding easily, has the problem of potential safety hazard.
The utility model provides a technical scheme that its technical problem adopted is: a worm-gear type ratchet wheel type hoisting mechanism comprises a motor, a winding drum and a pawl type worm-gear unidirectional force transmission speed reducing mechanism, the motor comprises an ascending motor and a descending motor, the pawl type worm gear and worm one-way force transmission speed reducing mechanism comprises an output shaft, a centering disc, a ratchet wheel, a worm wheel, a pawl and a worm, the ratchet wheel is fixed on the output shaft and rotates along with the output shaft, the centering disc and the worm wheel are sleeved on the output shaft through a bearing but do not rotate along with the output shaft, the centering disc is positioned on the left side of the ratchet wheel, the worm wheel is positioned on the right side of the ratchet wheel, one end of a connecting shaft is fixed on the centering disc, the other end of the connecting shaft is fixed on the worm wheel, the pawl is arranged on the connecting shaft, one end of, the ascending motor is connected with the left end of the winding drum, the right end of the winding drum is connected with the output shaft, and the descending motor is connected with the worm.
Preferably, the number of the connecting shafts is three, and one connecting shaft is matched with one pawl and one spring, so that the number of the pawls is 3, and the number of the springs is 3.
Preferably, the ascending motor is fixed on the motor base.
The utility model has the advantages that: worm-gear ratchet type hoist mechanism through the corotation reversal of ascending motor, decline motor difference control reel, ascending motor, decline motor all only need unidirectional rotation, need not just reversal, control is simple, the fault rate is low. The ratchet type worm gear and worm unidirectional force transmission speed reducing mechanism can be locked through a ratchet wheel of a pawl, so that heavy objects are prevented from sliding downwards. When the weight descends, the weight does work, the power required by the descending motor is very low, and the energy-saving advantage is achieved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Detailed Description
The invention will be further described with reference to the following figures and examples:
as shown in the figure, the worm wheel type ratchet wheel type hoisting mechanism of the utility model is provided, which comprises a motor, a winding drum 2 and a pawl type worm wheel and worm unidirectional force transmission speed reducing mechanism, wherein the motor comprises an ascending motor 1 and a descending motor 3, the pawl type worm wheel and worm unidirectional force transmission speed reducing mechanism comprises an output shaft 4, a centering disc 5, a ratchet 6, a worm wheel 7, a pawl 8 and a worm 9, the ratchet 6 is fixed on the output shaft 4 and rotates along with the output shaft 4, the centering disc 5 and the worm wheel 7 are sleeved on the output shaft 4 through a bearing but do not rotate along with the output shaft 4, the centering disc 5 is positioned at the left side of the ratchet 6, the worm wheel 7 is positioned at the right side of the ratchet 6, one end of a connecting shaft 10 is fixed on the centering disc 5, the other end is fixed on the worm wheel 7, the pawl 8 is arranged on the connecting shaft 7, one end of, the ascending motor 1 is connected with the left end of the winding drum 2, the right end of the winding drum 2 is connected with the output shaft 4, and the descending motor 3 is connected with the worm 9.
The number of the connecting shafts 10 is three, and one connecting shaft 10 is matched with one pawl 8 and one spring 11, so that the number of the pawls is 3, and the number of the springs is 3.
The lifting motor 1 is fixed on a motor base 12.
The working process is as follows: when the ascending motor 1 is normally started, the winding drum 2 is driven to rotate positively, the winding drum 2 drives the output shaft 4 to rotate, the output shaft 4 drives the ratchet wheel 6 to rotate, namely, the ratchet wheel 6 rotates clockwise in the drawing 2, at the moment, the descending motor 3, the worm 9, the worm wheel 7, the centering disc 5 and the pawl 8 are not moved, relative motion among the ratchet wheel and the pawl is not locked, and a heavy object ascends under the action of a steel wire rope of the winding drum 2. When the ascending motor 1 stops, the ascending motor is locked by a brake, the winding drum 2 and the output shaft 4 do not rotate any more, the ratchet wheel 6 does not rotate clockwise any more, and meanwhile, the ratchet wheel 6 is locked by the pawl 8 and cannot rotate anticlockwise, namely, the output shaft 4 and the winding drum 2 cannot rotate reversely, so that the heavy object is prevented from sliding downwards. When the descending motor 3 is started, the descending motor 3 drives the worm 9 to move, so that the worm wheel 7, the centering disc 5 and the pawl 8 are driven to rotate anticlockwise in the drawing 2, the ratchet wheel 6 is unlocked, the brake of the ascending motor 1 is released, the ascending motor 1, the winding drum 2 and the output shaft 4 are in a free state, the winding drum 2 is driven to rotate reversely under the action of the gravity of a heavy object hung on the steel wire rope, the winding drum 2 drives the output shaft 4 and the ratchet wheel 6 to rotate reversely, and the heavy object descends.
Claims (3)
1. The utility model provides a worm gear formula ratchet type hoist mechanism, includes motor, reel, its characterized in that: the ratchet type worm and gear unidirectional force transmission speed reducing mechanism comprises an output shaft, a centering disc, a ratchet wheel, a worm wheel, a pawl and a worm, wherein the ratchet wheel is fixed on the output shaft and rotates along with the output shaft, the centering disc and the worm wheel are sleeved on the output shaft through a bearing but do not rotate along with the output shaft, the centering disc is positioned on the left side of the ratchet wheel, the worm wheel is positioned on the right side of the ratchet wheel, one end of a connecting shaft is fixed on the centering disc, the other end of the connecting shaft is fixed on the worm wheel, the pawl is arranged on the connecting shaft, one end of a spring is fixed on the centering disc, the other end of the spring is fixed in the middle of the pawl, the worm wheel is meshed with the worm, the ascending motor is connected with the left end of a.
2. The worm-gear ratchet-type hoisting mechanism according to claim 1, wherein: the connecting shafts are three, one connecting shaft is matched with one pawl and one spring, so that the number of the pawls is 3, and the number of the springs is 3.
3. The worm-gear ratchet-type hoisting mechanism according to claim 1, wherein: the ascending motor is fixed on the motor base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347394.9U CN212198290U (en) | 2020-03-18 | 2020-03-18 | Worm gear type ratchet wheel type winding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347394.9U CN212198290U (en) | 2020-03-18 | 2020-03-18 | Worm gear type ratchet wheel type winding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212198290U true CN212198290U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020347394.9U Active CN212198290U (en) | 2020-03-18 | 2020-03-18 | Worm gear type ratchet wheel type winding mechanism |
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| CN (1) | CN212198290U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582057A (en) * | 2021-08-10 | 2021-11-02 | 常州大学 | Self-protection type hoisting crane |
| CN114195029A (en) * | 2021-11-09 | 2022-03-18 | 中建中新建设工程有限公司 | Auxiliary mounting device for building electromechanical equipment |
-
2020
- 2020-03-18 CN CN202020347394.9U patent/CN212198290U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582057A (en) * | 2021-08-10 | 2021-11-02 | 常州大学 | Self-protection type hoisting crane |
| CN113582057B (en) * | 2021-08-10 | 2022-09-09 | 常州大学 | Self-protection type hoisting crane |
| CN114195029A (en) * | 2021-11-09 | 2022-03-18 | 中建中新建设工程有限公司 | Auxiliary mounting device for building electromechanical equipment |
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