CN111392623A - Pawl type worm gear one-way force transmission speed reducing mechanism - Google Patents
Pawl type worm gear one-way force transmission speed reducing mechanism Download PDFInfo
- Publication number
- CN111392623A CN111392623A CN202010193161.2A CN202010193161A CN111392623A CN 111392623 A CN111392623 A CN 111392623A CN 202010193161 A CN202010193161 A CN 202010193161A CN 111392623 A CN111392623 A CN 111392623A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- ratchet wheel
- pawl
- worm
- speed reducing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/14—Power transmissions between power sources and drums or barrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
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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
- F16D41/00—Freewheels or freewheel clutches
- F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a pawl type worm gear and worm unidirectional force transmission speed reducing mechanism which comprises a box seat, wherein an output shaft and a worm are arranged on the box seat, a ratchet wheel is fixed on the output shaft and rotates along with the output shaft, a centering disc and a 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, a pawl is arranged on the connecting shaft, one end of a spring is fixed on the centering. The ratchet type worm gear unidirectional force transmission speed reducing mechanism has a speed reducing function and a unidirectional force transmission function, when a winding drum rotates forwards, a ratchet wheel rotates forwards, a pawl is fixed, and relative motion exists between the pawl and the ratchet wheel, so that the speed reducing function is realized. When the winding drum stops rotating, the ratchet wheel is locked by the pawl and cannot rotate anticlockwise, namely, the ratchet wheel is in one-way force transmission, the output shaft and the winding drum cannot rotate reversely at the moment, and the heavy object is prevented from sliding downwards.
Description
Technical Field
The invention relates to the field of machinery, in particular to a ratchet type worm gear unidirectional force transmission speed reducing 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 mechanism usually drives a winding drum to rotate forwards and backwards through forward and backward rotation of a motor, so that heavy objects connected with wires on the winding drum can ascend and descend, and the motor in the hoisting mechanism is usually connected with a speed reducing mechanism. The speed reducing mechanism used in the existing hoisting mechanism only has a speed reducing function but does not have a unidirectional force transferring function, and when the motor stops rotating after a heavy object rises, the heavy object easily slides down under the action of gravity, so that potential safety hazards exist.
Disclosure of Invention
The invention provides a ratchet type worm gear unidirectional force transmission speed reducing mechanism.
The invention aims to solve the problems that a speed reducing mechanism used in the existing hoisting mechanism only has a speed reducing function but does not have a unidirectional force transmission function, and when a motor stops rotating after a heavy object rises, the heavy object easily slides down due to the gravity action of the heavy object, so that potential safety hazards exist.
The technical scheme adopted by the invention for solving the technical problems is as follows: a ratchet type worm gear one-way force transmission speed reducing mechanism comprises a box seat, wherein an output shaft and a worm are arranged on the box seat, a ratchet wheel is fixed on the output shaft and rotates along with the output shaft, a centering disc and the worm gear are sleeved on the output shaft through a bearing but do not rotate along with the output shaft, the centering disc is located on the left side of the ratchet wheel, the worm gear is located 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 gear, a pawl is arranged on the connecting shaft, one end of a spring is fixed on the centering disc.
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.
The invention has the beneficial effects that: the ratchet type worm gear unidirectional force transmission speed reducing mechanism has a speed reducing function and also has a unidirectional force transmission function, when the winding drum rotates forwards, the output shaft and the ratchet wheel rotate forwards, the pawl is fixed, and relative motion exists between the pawl and the ratchet wheel, so that the speed reducing function is realized. When the winding drum stops rotating, the ratchet wheel is locked by the pawl and cannot rotate anticlockwise, namely, the ratchet wheel is in one-way force transmission, the output shaft and the winding drum cannot rotate reversely at the moment, and the heavy object is prevented from sliding downwards. When the weight is lowered, the lowering motor rotates to drive the pawl to rotate and contact with the ratchet wheel to lock the ratchet wheel, the ratchet wheel rotates reversely under the action of the gravity of the weight, the weight is lowered, and at the moment, the weight does work, so that the power required by the lowering motor is low, and the energy-saving advantage is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of a ratchet type worm gear unidirectional force transmission speed reducing mechanism in specific use.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
as shown in the figure, the ratchet type worm and gear unidirectional force transmission speed reducing mechanism comprises a box seat 1, wherein an output shaft 2 and a worm 3 are arranged on the box seat 1, a ratchet wheel 4 is fixed on the output shaft 2 and rotates along with the output shaft 2, a centering disc 5 and a worm wheel 6 are sleeved on the output shaft 2 through a bearing but do not rotate along with the output shaft 2, the centering disc 5 is positioned on the left side of the ratchet wheel 4, the worm wheel 6 is positioned on the right side of the ratchet wheel 4, one end of a connecting shaft 7 is fixed on the centering disc 5, the other end of the connecting shaft is fixed on the worm wheel 6, a pawl 8 is arranged on the connecting shaft, one end of a spring 9 is fixed on the centering disc 5, the.
The number of the connecting shafts 7 is three, one connecting shaft 7 is matched with one pawl 8 and one spring 9, so that the number of the pawls is 3, and the number of the springs is 3.
When the lifting mechanism is used specifically, as shown in fig. 3, the lifting motor 10 is connected with the left end of the winding drum 11, the right end of the winding drum 11 is connected with the output shaft 2, and the descending motor 12 is connected with the worm 3. When the ascending motor 10 is normally started, the winding drum 11 is driven to rotate positively, the winding drum 11 drives the output shaft 2 to rotate, the output shaft 2 drives the ratchet wheel 4 to rotate, namely, the ratchet wheel 4 rotates clockwise in the drawing 2, at the moment, the descending motor 12, the worm 3, the worm wheel 6, the centering disc 5 and the pawl 8 are not moved, the ratchet wheel and the pawl move relatively and are not locked, and the heavy object ascends under the action of the steel wire rope of the winding drum 2. When the ascending motor 10 stops, the ascending motor is locked by a brake, the winding drum 11 and the output shaft 2 do not rotate any more, the ratchet wheel 4 does not rotate clockwise, and meanwhile, the ratchet wheel 4 is locked by the pawl 8 and cannot rotate anticlockwise, namely, the output shaft 2 and the winding drum 11 cannot rotate reversely, so that the heavy object is prevented from sliding downwards. When the descending motor 12 is started, the descending motor 12 drives the worm 3 to move, so that the worm wheel 6, the centering disc 5 and the pawl 8 are driven to rotate anticlockwise in the drawing 2, the ratchet wheel 4 is unlocked, the brake of the ascending motor 10 is released, the ascending motor 10, the winding drum 11 and the output shaft 2 are in a free state, the winding drum 11 is driven to rotate reversely under the action of the gravity of a heavy object hung on a steel wire rope, the winding drum 11 drives the output shaft 2 and the ratchet wheel 4 to rotate reversely, and the heavy object descends.
Claims (2)
1. The utility model provides a one-way biography power reduction gears of pawl formula worm gear, includes the case seat, its characterized in that: the box seat is provided with an output shaft 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 located on the left side of the ratchet wheel, the worm wheel is located on the right side of the ratchet wheel, one end of the 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 spring is fixed on the centering disc, the other end.
2. The ratchet type worm gear unidirectional force transmission speed reducing mechanism according to claim 1, characterized in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193161.2A CN111392623A (en) | 2020-03-18 | 2020-03-18 | Pawl type worm gear one-way force transmission speed reducing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010193161.2A CN111392623A (en) | 2020-03-18 | 2020-03-18 | Pawl type worm gear one-way force transmission speed reducing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111392623A true CN111392623A (en) | 2020-07-10 |
Family
ID=71427212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010193161.2A Pending CN111392623A (en) | 2020-03-18 | 2020-03-18 | Pawl type worm gear one-way force transmission speed reducing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111392623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623986A (en) * | 2020-12-24 | 2021-04-09 | 武汉钢铁集团宏信置业发展有限公司 | Rope winding type mine hoisting device capable of rapidly switching fall prevention modes |
| CN112696463A (en) * | 2021-01-08 | 2021-04-23 | 广军 | Worm self-locking type unidirectional rotating mechanism |
| CN113582057A (en) * | 2021-08-10 | 2021-11-02 | 常州大学 | Self-protection type hoisting crane |
-
2020
- 2020-03-18 CN CN202010193161.2A patent/CN111392623A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112623986A (en) * | 2020-12-24 | 2021-04-09 | 武汉钢铁集团宏信置业发展有限公司 | Rope winding type mine hoisting device capable of rapidly switching fall prevention modes |
| CN112623986B (en) * | 2020-12-24 | 2024-04-05 | 武汉钢铁集团宏信置业发展有限公司 | Rope winding type mine lifting device capable of rapidly switching anti-falling modes |
| CN112696463A (en) * | 2021-01-08 | 2021-04-23 | 广军 | Worm self-locking type unidirectional rotating mechanism |
| 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 |
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