CN220847436U - Speed reducer for headstock gear and electric headstock gear - Google Patents
Speed reducer for headstock gear and electric headstock gear Download PDFInfo
- Publication number
- CN220847436U CN220847436U CN202322753034.5U CN202322753034U CN220847436U CN 220847436 U CN220847436 U CN 220847436U CN 202322753034 U CN202322753034 U CN 202322753034U CN 220847436 U CN220847436 U CN 220847436U
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- friction
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- transmission shaft
- reduction gear
- wall
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 76
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model belongs to the technical field of gate control equipment, and particularly relates to a speed reducer for a hoist and an electric hoist. It comprises the following steps: the device comprises a speed reduction box body, a fixed seat and a friction piece, wherein the speed reduction box body is arranged on a transmission box of the headstock gear and is provided with a circular inner wall; the fixed seat is arranged on a transmission shaft extending out of the transmission case; the first end of the friction piece is connected to the fixed seat through a pin shaft parallel to the transmission shaft, and the second end of the friction piece is used for being in friction contact with the inner wall of the peripheral reduction gearbox body. The utility model is used for solving the problem that a buffer in the hoist is easily damaged by the impact of a gate.
Description
Technical Field
The utility model belongs to the technical field of gate control equipment, and particularly relates to a speed reducer for a hoist and an electric hoist.
Background
The hoist is used for various large-scale water supply and drainage and hydraulic and hydroelectric engineering. The device is used for controlling the lifting of various large and medium cast iron gates and steel gates to achieve the aim of opening and closing.
At present, after the operation outage of the headstock gear, the gate can be closed because the dead weight descends rapidly, when the gate is close to the bottom and is to be closed, the buffer in the headstock gear can be used for buffering the gate, so that the impact force is reduced, and further the high-speed impact damage to the gate is avoided, but the impact of the gate to the buffer can only be absorbed by the buffer, the buffer is easy to damage in the past, and the buffer is usually required to be replaced and maintained at higher time cost and economic cost, and meanwhile, the normal use of the gate is influenced.
Disclosure of utility model
The utility model aims to solve the technical problem of overcoming the defects of the prior art, and provides a speed reducing device for a hoist and an electric hoist, which are used for solving the problem that a buffer in the hoist is easily damaged by the impact of a gate.
On the one hand, the technical scheme for solving the technical problems is as follows: a speed reducer for a hoist, comprising:
the speed reduction box body is arranged on a transmission box of the hoist and is provided with a circular inner wall;
the fixed seat is arranged on a transmission shaft extending out of the transmission case;
The first ends of the friction pieces are connected to the fixed base through pin shafts parallel to the transmission shaft, and the second ends of the friction pieces are used for being in friction contact with the inner wall of the reduction gearbox body at the periphery.
Compared with the prior art, the technical scheme has the following beneficial effects:
When the gate descends, the transmission shaft in the transmission case can be driven to rotate, the transmission shaft can drive the friction piece movably mounted on the transmission shaft to swing, the first end of the friction piece is connected through the pin shaft, the second end of the friction piece can be outwards opened due to the action of centrifugal force when rotating, the second end of the friction piece can be in friction contact with the inner wall of the reduction gearbox body at the periphery, and further the transmission shaft is reversely braked, so that the gate has braking effect in the descending process all times, the descending speed of the gate can be greatly reduced due to braking force generated by friction force existing at the moment, the rapid descending of the gate is avoided to generate larger impact on the buffer, and in addition, the transmission shaft can not swing out the second end of the friction piece to rub against the inner wall when normally rotating, and normal operation of the hoist is ensured.
Further, the friction member second end is formed with a friction portion for the weight wider than the friction member first end.
Further, the maximum outline radius of the second end of the friction piece is larger than the radius of the inner wall of the reduction gearbox body during rotation.
Further, the second end of the friction member is disposed obliquely toward the direction opposite to the rotational advancing direction of the drive shaft.
Further, the friction part is offset to one side of the second end of the friction member, which is different from the rotation direction of the friction member.
Further, the friction piece is provided with at least two at equal intervals along the circumference of the fixed seat.
Further, a bearing sleeved on the transmission shaft is arranged between the fixed seat and the reduction gearbox body.
Further, the fixing base includes:
the fixed sleeve is sleeved and fixed on the transmission shaft;
the two mounting plates are axially arranged at intervals along the transmission shaft in the periphery of the fixed sleeve, the friction piece is clamped between the two mounting plates, and two ends of the pin shaft are respectively connected to the two mounting plates.
On the other hand, this embodiment also discloses an electric hoist, and it includes: the above-mentioned speed reducing device;
The output end of the electric actuator is connected with the transmission shaft;
the output end of the buffer is connected with a transmission screw rod for opening and closing the gate, and the transmission screw rod is connected with the transmission shaft through a transmission gear set arranged in the transmission box.
Further, the transmission shaft comprises a first transmission shaft and a second transmission shaft which are connected through a clutch, an electromagnetic brake, a manual brake and the speed reducing device are arranged on the second transmission shaft, and a travel counter is arranged on the electric actuator.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall structure of embodiment 1 of the present utility model.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a schematic overall structure of embodiment 2 of the present utility model.
Reference numerals:
1. a transmission case;
2. A reduction gearbox body; 3. a fixing seat; 4. a transmission shaft; 5. a friction member; 6. a pin shaft;
301. A fixed sleeve; 302. a mounting plate;
401. A first drive shaft; 402. a second drive shaft;
7. A friction part;
8. A bearing;
9. An electric actuator; 10. a buffer; 11. a transmission screw rod; 12. a drive gear set;
13. A clutch; 14. an electromagnetic brake; 15. a manual brake;
16. A trip counter.
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1-2, the speed reducer for a hoist provided by the utility model comprises: the device comprises a reduction gearbox body, a fixed seat and four friction pieces.
The gearbox body is installed on the transmission case of headstock gear, specifically, the gearbox is installed in the transmission case bottom, and the transmission shaft stretches out in the transmission case bottom in the transmission case, stretches into in the gearbox body, the gearbox body has circular inner wall, and this circular inner wall is located same vertical line with the axle core of transmission shaft.
The fixing base is installed in stretching out on the transmission shaft of transmission case, the first end of friction spare pass through be on a parallel with the round pin hub connection of transmission shaft in on the fixing base, the friction spare can be around round pin hub free rotation, the friction spare second end be used for with the periphery the friction contact of reducing gear box inner wall, when the gate descends, the friction spare can be thrown to the periphery because centrifugal force, and the second end of friction spare can be with reducing gear box inner wall contact, and when headstock gear normally operates, the transmission shaft rotation speed can't throw out the friction spare second end for friction spare second end is not with reducing gear box inner wall contact, can normal operating.
When the gate descends, the transmission shaft in the transmission case can be driven to rotate, the transmission shaft can drive the friction piece movably mounted on the transmission shaft to swing, the first end of the friction piece is connected through the pin shaft, the second end of the friction piece can be outwards opened due to the action of centrifugal force when rotating, the second end of the friction piece can be in friction contact with the inner wall of the reduction gearbox body at the periphery, and further the transmission shaft is reversely braked, so that the gate has braking effect in the descending process all times, the descending speed of the gate can be greatly reduced due to braking force generated by friction force existing at the moment, the rapid descending of the gate is avoided to generate larger impact on the buffer, and in addition, the transmission shaft can not swing out the second end of the friction piece to rub against the inner wall when normally rotating, and normal operation of the hoist is ensured.
Specifically, friction part that is formed with the friction part that is wider than friction part first end is formed with friction part setting at the second end of friction with reduction box inner wall, and be located second end friction part and be wider than first end, second end weight is greater than first end for when friction part is thrown, under centrifugal force effect, more easily throw out friction part second end and reduction box inner wall contact, the weight of second end is greater than first end can be with forming great frictional force between friction part and the reduction box inner wall, friction part accessible detachable connection is connected with friction part, or with friction part an organic whole formation, friction part is the texture wear resistance friction force big material and makes.
In addition, the maximum outline radius of the second end of the friction piece is larger than the radius of the inner wall of the reduction box body during rotation, so that the friction piece can still contact with the inner wall of the reduction box body after friction loss is prolonged.
The second end of the friction piece is obliquely arranged towards the direction opposite to the rotating advancing direction of the transmission shaft, so that the second end of the friction piece can contact and rub with the inner wall of the reduction gearbox body more smoothly.
The friction part is offset on one side of the second end of the friction piece, which is different from the rotation direction of the friction piece, and the friction part is offset on the opposite side of the rotation direction, so that the angle of the whole friction piece which swings outwards is as large as possible, namely the whole friction piece is as simple as the outer circumference deflection to the maximum, and the friction part plays a role of a counterweight, and when the friction part rotates, the friction part is pressed on the inner wall of the reduction gearbox body.
In this embodiment, the friction piece is provided with two groups of four friction pieces in the even interval of fixing base circumference.
The bearing sleeved on the transmission shaft is arranged between the fixed seat and the reduction gearbox body, so that excessive friction between the fixed seat and the reduction gearbox body can be avoided.
In this embodiment, the fixing base includes: the fixing sleeve and the two mounting plates are fixed at the upper end and the lower end of the fixing sleeve.
The fixed sleeve is fixed on the transmission shaft through flat keys and the like in a sleeved mode, two mounting plates are arranged on the periphery of the fixed sleeve at intervals along the axial direction of the transmission shaft, the friction piece is clamped between the two mounting plates, and two ends of the pin shaft are respectively connected to the two mounting plates.
Example 2
As shown in fig. 3, the present embodiment further discloses an electric hoist, which includes the speed reducing device and the electric actuator of embodiment 1, and a buffer.
The output end of the electric actuator is connected with the transmission shaft, the output end of the buffer is connected with a transmission screw rod for opening and closing the gate, and the transmission screw rod is connected with the transmission shaft through a transmission gear set arranged in the transmission box.
When the gate descends, the transmission screw rod descends, the transmission gear set drives the transmission shaft to rotate, and the speed reducing device plays a role in reducing speed.
The transmission shaft comprises a first transmission shaft and a second transmission shaft which are connected through a clutch, and an electromagnetic brake, a manual brake and the speed reducing device are arranged on the second transmission shaft.
In this embodiment, the electric actuator is provided with a travel counter, so that a rotation travel of the electric actuator can be calculated.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. The utility model provides a decelerator for headstock gear which characterized in that includes:
the speed reduction box body is arranged on a transmission box of the hoist and is provided with a circular inner wall;
the fixed seat is arranged on a transmission shaft extending out of the transmission case;
The first ends of the friction pieces are connected to the fixed base through pin shafts parallel to the transmission shaft, and the second ends of the friction pieces are used for being in friction contact with the inner wall of the reduction gearbox body at the periphery.
2. A reduction gear as claimed in claim 1, wherein the friction member second end is formed with a friction portion for counterweight wider than the friction member first end.
3. A reduction gear as claimed in claim 2, wherein the maximum profile radius of the second end of the friction member is greater than the radius of the inner wall of the reduction box during rotation.
4. A reduction gear as claimed in claim 3, wherein the second end of the friction member is disposed obliquely to the direction opposite to the rotational advancement direction of the drive shaft.
5. The reduction gear as defined in claim 4, wherein the friction portion is offset to a side of the friction member second end that is different from the direction of rotation of the friction member.
6. A reduction device according to claim 3, wherein the friction members are provided with at least two friction members at regular intervals along the circumference of the fixed seat.
7. The speed reducer of claim 1, wherein a bearing sleeved on the transmission shaft is arranged between the fixing seat and the speed reducer box.
8. The reduction gear as defined in claim 1, wherein the mount comprises:
the fixed sleeve is sleeved and fixed on the transmission shaft;
the two mounting plates are axially arranged at intervals along the transmission shaft in the periphery of the fixed sleeve, the friction piece is clamped between the two mounting plates, and two ends of the pin shaft are respectively connected to the two mounting plates.
9. An electric hoist, comprising: a reduction gear as claimed in any one of claims 1 to 8;
The output end of the electric actuator is connected with the transmission shaft;
the output end of the buffer is connected with a transmission screw rod for opening and closing the gate, and the transmission screw rod is connected with the transmission shaft through a transmission gear set arranged in the transmission box.
10. The electric hoist according to claim 9, characterized in that the drive shaft includes a first drive shaft and a second drive shaft connected by a clutch, an electromagnetic brake, a manual brake, and the reduction gear are provided on the second drive shaft, and a stroke counter is provided on the electric actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322753034.5U CN220847436U (en) | 2023-10-13 | 2023-10-13 | Speed reducer for headstock gear and electric headstock gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322753034.5U CN220847436U (en) | 2023-10-13 | 2023-10-13 | Speed reducer for headstock gear and electric headstock gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220847436U true CN220847436U (en) | 2024-04-26 |
Family
ID=90780428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322753034.5U Active CN220847436U (en) | 2023-10-13 | 2023-10-13 | Speed reducer for headstock gear and electric headstock gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220847436U (en) |
-
2023
- 2023-10-13 CN CN202322753034.5U patent/CN220847436U/en active Active
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