CN108331855A - A kind of grouping transmission mechanism - Google Patents
A kind of grouping transmission mechanism Download PDFInfo
- Publication number
- CN108331855A CN108331855A CN201810268367.XA CN201810268367A CN108331855A CN 108331855 A CN108331855 A CN 108331855A CN 201810268367 A CN201810268367 A CN 201810268367A CN 108331855 A CN108331855 A CN 108331855A
- Authority
- CN
- China
- Prior art keywords
- control panel
- brake control
- gear
- transmission shaft
- ratchet
- 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
-
- 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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
- F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
- F16D43/204—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers
- F16D43/208—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement
-
- 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
- F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of grouping transmission mechanisms,Including gear assembly,The gear assembly includes transmission shaft and is secured to the end plate and first gear of connection,First brake control panel and the second brake control panel are additionally provided on the transmission shaft,It is provided with second gear between the first brake control panel and the second brake control panel,It is provided with ratchet between the first brake control panel and end plate,The pawl being matched therewith is provided on the outside of the ratchet,On joint face between the ratchet and first brake control panel and end plate,It is both provided with friction plate on joint face between the second gear and first brake control panel and the second brake control panel,Forward direction is driven by way of spring pressure,Load is more than that setting value can slipping protection,And the transmission shaft surface is provided with one section of multiple thread,It is provided with the thread groove being meshed with the multiple thread in the first brake control panel.By the screw thread between the transmission shaft in gear assembly and first brake control panel, during second gear inverts when rotating speed of transmission shaft is more than second gear rotating speed, change the frictional force of ratchet both sides friction plate, to braking deceleration.
Description
Technical field
The present invention relates to a kind of grouping transmission mechanisms, belong to gear case transmission mechanism technical field.
Background technology
It is unworthy of standby mechanical overload protection device in crane gear box transmission mechanism at present and overspeed protection brake is dual
Electronic type function can be respectively adopted to realize for demand in defencive function, but it has the influence of reaction time difference to cause safety
Big heavy discount, some simple mechanical overload protection devices are because of no automatic compensation function, but protection value is inaccurate and needs
It frequently to adjust；Mechanical overspeed protective brake does not often have real-time guard, needs longer reaction time and larger
Guard space and safety is not relatively high.
Invention content
Technical problem to be solved by the invention is to provide a kind of grouping transmission mechanisms, pass through the transmission shaft in gear assembly
With the screw thread between first brake control panel, during second gear inverts when rotating speed of transmission shaft be more than second gear rotating speed
When, change the frictional force of ratchet both sides friction plate, to braking deceleration.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of grouping transmission mechanism, including gear assembly, the gear assembly includes transmission shaft, be secured to connection end plate and
First gear is additionally provided with first brake control panel and the second brake control panel, the first brake control on the transmission shaft
It is provided with second gear between disk and the second brake control panel, ratchet is provided between the first brake control panel and end plate,
The pawl being matched therewith, the connection between the ratchet and first brake control panel and end plate are provided on the outside of the ratchet
It is both provided with friction on joint face on face, between the second gear and first brake control panel and the second brake control panel
Piece, and the transmission shaft surface is provided with one section of multiple thread, is provided in the first brake control panel and the bull spiral shell
The thread groove that line is meshed.
A kind of grouping transmission mechanism above-mentioned, it is characterised in that：Spring bushing, institute are further fixedly arranged on the transmission shaft
It states and is provided with spring between spring bushing and the second brake control panel.
A kind of grouping transmission mechanism above-mentioned, it is characterised in that：One of the second gear is provided on side
At least one tipper is provided with steel ball in the tipper.
A kind of grouping transmission mechanism above-mentioned, it is characterised in that：It is also set successively on transmission shaft on the outside of the spring bushing
It is equipped with ball bearing, oil sealing bushing, nut, nylon nut.
A kind of grouping transmission mechanism above-mentioned, it is characterised in that：The first brake control panel and the second brake control panel
Between pass through double end round key axial sliding type connect.
A kind of grouping transmission mechanism above-mentioned, it is characterised in that：The spring is dish-type spring, and the spring bushing is disk
Type spring bushing.
The beneficial effects of the invention are as follows：
1, during second gear drives entire drive mechanism to rotate forward, second gear passes through the second brake control panel band
Dynamic first brake control panel is rotated forward with respect to transmission shaft, to which the thread groove in first brake control panel is around the bull of transmission shaft
Screw thread is rotated to ratchet direction, to make end plate and first brake control the friction plate of chuck clamping ratchet both sides, is rubbed to utilize
Wiping power drives end plate and transmission shaft to rotate forward, when the load connected on transmission shaft is more than rated load, the second transmission both sides
The frictional force that friction plate generates is not enough to that transmission shaft is driven to be rotated further, thus while the second transmission gear is rotated further,
Slippery conditions occur for the second transmission both sides friction plate, and transmission shaft can not rotate, and effectively prevent transmission mechanism overload operation；
2, during second gear drives entire drive mechanism to rotate backward, second gear passes through the second brake control panel band
Dynamic first brake control panel is rotated backward with respect to transmission shaft, to which the thread groove in first brake control panel is around the bull of transmission shaft
Screw thread is rotated to far from ratchet direction, to make end plate and first brake control panel unclamp the friction plate of ratchet both sides, frictional force
It disappears, transmission shaft can be rotated backward under the action of load, when reverse speed hypervelocity, i.e., reversely be turned more than second gear
When dynamic speed, thread groove of the multiple thread in first brake control panel on transmission shaft turns to the second brake control panel direction
It is dynamic, to make end plate clamp ratchet again, drive ratchet to rotate backward using the frictional force of ratchet both sides friction plate, it is anti-in ratchet
It to when rotation, is braked using pawl, to make entire transmission mechanism brake, is avoided super in counter rotation
Speed operating；
3, a normal pressure is applied by the brake control panel of spring pair second, ensures that second gear can drive first brake to control
Disk and the second brake control panel rotate synchronously, and compensate second gear two using the steel ball in the tipper of second gear side
The hypodynamic situation of spring positive pressure caused by side friction plate is thinning.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of grouping transmission mechanism of the present invention；
Fig. 2 is a kind of structural schematic diagram of the second gear introversion skewed slot of grouping transmission mechanism of the present invention.
Specific implementation mode
Below in conjunction with Figure of description, the present invention is further illustrated.
As shown in Figure 1, a kind of grouping transmission mechanism, including gear assembly 1, the gear assembly 1 include transmission shaft and its
The end plate 16 and first gear 11 being fixedly connected are additionally provided with the brake control of first brake control panel 4 and second on the transmission shaft
Disk 7 processed, the first brake control panel 4 and second brake and are provided with second gear 6, the first brake control between control panel 7
Ratchet 3 is provided between disk 4 and end plate 16 processed, the outside of the ratchet 3 is provided with the pawl being matched therewith, the ratchet 3
On joint face between first brake control panel 4 and end plate 16, the second gear 6 and first brake control panel 4 and second
It is both provided with friction plate on joint face between brake control panel 7, and the transmission shaft surface is provided with one section of multiple thread, institute
State the thread groove for being provided in first brake control panel 4 and being meshed with the multiple thread.
During second gear 6 drives entire drive mechanism to rotate forward, second gear 6 is controlled by the second brake
Disk drives the opposite transmission shaft of first brake control panel 4 to rotate forward, to which the thread groove in first brake control panel 4 is around transmission shaft
Multiple thread rotated to 3 direction of ratchet, to make end plate 16 and first brake control panel 4 clamp the friction plate of 3 both sides of ratchet,
To drive end plate 16, transmission shaft and ratchet synchronous forward to rotate using frictional force, when the load connected on transmission shaft is more than volume
When constant load, the frictional force that 3 both sides friction plate of ratchet generates is not enough to that transmission shaft is driven to be rotated further, the second transmission gear after
While continuous rotation, slippery conditions occur for the second transmission both sides friction plate, and transmission shaft can not rotate, and effectively prevent transmission mechanism
Overload operation；During second gear 6 drives entire drive mechanism to rotate backward, second gear 6 passes through the second brake
Control panel 7 drives the opposite transmission shaft of first brake control panel 4 to rotate backward, to the thread groove in first brake control panel 4 around
The multiple thread of transmission shaft is rotated to far from 3 direction of ratchet, to make end plate 16 and first brake control panel 4 unclamp ratchet both sides
Friction plate, frictional force disappears, and transmission shaft can be rotated backward under the action of load, when reverse speed exceeds the speed limit, i.e., super
When crossing second gear 6 and rotating backward speed, the multiple thread on transmission shaft start the thread groove in first brake control panel 4 to
Second 7 direction of brake control panel rotation, to make end plate 16 and first brake control panel 4 clamp ratchet 3 again, utilizes ratchet two
The frictional force of side friction plate drives ratchet to rotate backward, and when ratchet rotates backward, is braked using pawl, to make
Entire transmission mechanism brake, avoids the overspeed operation in counter rotation.
In the present embodiment, second gear 6 can also be replaced with the similar driving member such as miniature belt wheel, sprocket wheel, similarly can be real
Existing above-mentioned function.
Spring bushing 9 is further fixedly arranged on the transmission shaft, the spring bushing 9 and second brakes between control panel 7
It is provided with spring 8, a normal pressure is applied by the brake control panel of spring pair second, ensures that second gear can drive the first brake
Vehicle control panel and the second brake control panel rotate synchronously.In the present embodiment, spring 8 is dish-type spring, and the spring bushing 9 is disk
Type spring bushing.
It is provided at least one tipper 15 on one of the second gear 6 side, is set in the tipper 15
It is equipped with steel ball 5, the influence of the overload protection of spring force decaying thinning for compensating friction disc wear automatically, while reducing
Influence of the dynamic impact to the precision of overload protection, during second gear 6 starts, as shown in Fig. 2, using centrifugal force and being used to
Property force effect, make the sliding in the tipper 15 of steel ball 5, when the friction plate of 6 both sides of second gear does not have any abrasion or spring bullet
Power do not decay or load it is smaller in the case of, spring 8 to second brake control panel 7 normal pressure be enough that second gear 6 is made to open
Begin just to drive the second brake control panel 7 to rotate while rotation, and steel ball 5 does not do the movement for making spring-compressed, when the second tooth
There is the case where thinning friction disc wear or spring force decaying or load increase in use in the friction plate for taking turns 6 both sides
When, in the case of no any compensation, spring 8 becomes smaller to the normal pressure of the second brake control panel 7, and second gear 6 is starting
Frictional force is not enough to that the second brake control panel 7 is driven to rotate when rotation, during second gear 6 rotates alone, steel
Pearl 5 under the action of the centrifugal force, is moved along tipper 15, adjusts the position relationship between the second brake control panel 7 and spring 8, directly
When second gear 6 capable of being made to drive its rotation the normal pressure of the second brake control panel 7 to spring 8, the second brake control
Disk 7 is rotated synchronously with second gear 6, and spring 8 is to the normal pressure of the second brake control panel 7, the second brake control panel 7 and the second tooth
The centrifugal force of frictional force, steel ball 5 between wheel 6 reaches the state of balance, to the position of the opposite second brake control panel 7 of spring 8
Fixation is set, i.e. the position of steel ball 5 is fixed, when friction disc wear occurs in use in the friction plate of 6 both sides of second gear
When the case where thinning or spring force decaying excessive or load excessive overrate, steel ball 5 can be skidded off from entire tipper 15,
Reach safeguard protection purpose, need to increase elastic force guarantee transmission by adjusting nut 13, nylon nut 14 at that time or reduces load
It can be just driven in safe range.
It is connected by 2 axial sliding type of double end round key between the brake of first brake control panel 4 and second control panel 7,
Keep 7 opposite first brake control panel 4 of the second brake control panel horizontally moveable, convenient for adjustment spring 8 to the second brake control panel 7
Normal pressure.
Also be disposed on the transmission shaft in the outside of the spring bushing 9 ball bearing 10, oil sealing bushing 12, nut 13,
Nylon nut 14 is used for fixed spring bushing 9.
In conclusion a kind of grouping transmission mechanism provided by the invention, is stopped by the transmission shaft and first in gear assembly
Screw thread between vehicle control panel changes during second gear inverts when rotating speed of transmission shaft is more than second gear rotating speed
The frictional force of ratchet both sides friction plate, to braking deceleration.
The basic principles and main features and advantage of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
Boundary.
Claims (6)
1. a kind of grouping transmission mechanism, it is characterised in that：Including gear assembly（1）, the gear assembly（1）Including transmission shaft,
It is secured to the end plate of connection（16）And first gear（11）, first brake control panel is additionally provided on the transmission shaft（4）With
Second brake control panel（7）, the first brake control panel（4）With the second brake control panel（7）Between be provided with second gear
（6）, the first brake control panel（4）With end plate（16）Between be provided with ratchet（3）, the ratchet（3）Outside be provided with
The pawl being matched therewith, the ratchet（3）With first brake control panel（4）And end plate（16）Between joint face on, it is described
Second gear（6）With first brake control panel（4）With the second brake control panel（7）Between joint face on be both provided with friction
Piece, and the transmission shaft surface is provided with one section of multiple thread, the first brake control panel（4）On be provided with and the bull
The thread groove that screw thread is meshed.
2. a kind of grouping transmission mechanism according to claim 1, it is characterised in that：It is further fixedly arranged on the transmission shaft
Spring bushing（9）, the spring bushing（9）With the second brake control panel（7）Between be provided with spring（8）.
3. a kind of grouping transmission mechanism according to claim 2, it is characterised in that：The second gear（6）Wherein one
At least one tipper is provided on a side（15）, the tipper（15）Inside it is provided with steel ball（5）.
4. a kind of grouping transmission mechanism according to claim 2, it is characterised in that：The spring bushing（9）The biography in outside
Ball bearing is also disposed on moving axis（10）, oil sealing bushing（12）, nut（13）, nylon nut（14）.
5. a kind of grouping transmission mechanism according to claim 1, it is characterised in that：The first brake control panel（4）With
Second brake control panel（7）Between pass through double end round key（2）Axial sliding type connects.
6. a kind of grouping transmission mechanism according to claim 2, it is characterised in that：The spring（8）For dish-type spring, institute
State spring bushing（9）For dish-type spring bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810268367.XA CN108331855A (en) | 2018-03-29 | 2018-03-29 | A kind of grouping transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810268367.XA CN108331855A (en) | 2018-03-29 | 2018-03-29 | A kind of grouping transmission mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108331855A true CN108331855A (en) | 2018-07-27 |
Family
ID=62932405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810268367.XA Pending CN108331855A (en) | 2018-03-29 | 2018-03-29 | A kind of grouping transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108331855A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3131459U (en) * | 2007-02-20 | 2007-05-10 | 誠岱機械廠股▲分▼有限公司 | Safety device for hoisting engine |
| TWM318013U (en) * | 2007-02-09 | 2007-09-01 | Yi-De Pan | Safety apparatus of integrated over-loading and braking for load-bearing winding mechanism |
| CN201031121Y (en) * | 2007-03-09 | 2008-03-05 | 诚岱机械厂股份有限公司 | Supercharge loading and braking integrated safety device suitable for load-carrying lifting mechanism |
| CN201390623Y (en) * | 2009-03-06 | 2010-01-27 | 诚岱机械厂股份有限公司 | Overload braking safety device of loading winch mechanism |
| CN102344099A (en) * | 2010-07-22 | 2012-02-08 | 重庆地质仪器厂 | Well logging winch and braking device thereof |
| CN208578904U (en) * | 2018-03-29 | 2019-03-05 | 冠亚机械工业（昆山）有限公司 | A kind of grouping transmission mechanism |
-
2018
- 2018-03-29 CN CN201810268367.XA patent/CN108331855A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM318013U (en) * | 2007-02-09 | 2007-09-01 | Yi-De Pan | Safety apparatus of integrated over-loading and braking for load-bearing winding mechanism |
| JP3131459U (en) * | 2007-02-20 | 2007-05-10 | 誠岱機械廠股▲分▼有限公司 | Safety device for hoisting engine |
| CN201031121Y (en) * | 2007-03-09 | 2008-03-05 | 诚岱机械厂股份有限公司 | Supercharge loading and braking integrated safety device suitable for load-carrying lifting mechanism |
| CN201390623Y (en) * | 2009-03-06 | 2010-01-27 | 诚岱机械厂股份有限公司 | Overload braking safety device of loading winch mechanism |
| CN102344099A (en) * | 2010-07-22 | 2012-02-08 | 重庆地质仪器厂 | Well logging winch and braking device thereof |
| CN208578904U (en) * | 2018-03-29 | 2019-03-05 | 冠亚机械工业（昆山）有限公司 | A kind of grouping transmission mechanism |
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