CN210926843U - Chassis vehicle electric driving mechanism with overload protection function - Google Patents
Chassis vehicle electric driving mechanism with overload protection function Download PDFInfo
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- CN210926843U CN210926843U CN201921525353.8U CN201921525353U CN210926843U CN 210926843 U CN210926843 U CN 210926843U CN 201921525353 U CN201921525353 U CN 201921525353U CN 210926843 U CN210926843 U CN 210926843U
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- fluted disc
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Abstract
The utility model discloses a chassis car electric drive mechanism with overload protection function, including the motor that the transmission connects in proper order, reduction gear group, gear clutch, transition gear group and output gear, this reduction gear group is including the level four reduction gear that the transmission connects in proper order, one of them reduction gear includes the connecting axle, the upper reaches fluted disc, the friction disk, the low reaches fluted disc, this upper reaches fluted disc, the friction disk, the low reaches fluted disc is all overlapped on this connecting axle, this upper reaches fluted disc and low reaches fluted disc centre gripping this friction disk, this upper reaches fluted disc and low reaches fluted disc form the friction surface of mutual opposition with this friction disk respectively. Under normal conditions, the upstream fluted disc can drive the downstream fluted disc through the friction disc and rotate when rotatory, and under the dead condition of card appears in gear clutch, transition gear train and output gear, the unable rotation of downstream fluted disc, under the transition of friction disc, the idle running of upstream fluted disc to avoid the motor to burn.
Description
Technical Field
The utility model relates to a chassis car electric drive mechanism especially relates to a chassis car electric drive mechanism with overload protection function.
Background
The chassis is used for carrying the circuit breaker and sending the circuit breaker into the switch cabinet or pulling the circuit breaker out of the switch cabinet. The transmission is realized to the overwhelming majority chassis car adopting lead screw and nut complex mode, and the lead screw setting is on the mount promptly, and the nut setting is on removing the frame, and when the lead screw took place to rotate, the nut just walked on the lead screw to the drive removes frame and circuit breaker and removes in step.
The mode that adopts artifical manual crank handle in the early stage drives the lead screw and rotates, and efficiency is poor and hard. Later, a structure that a motor is adopted to drive a nut to rotate is designed, for example, the invention patent application with the application publication number of CN105655907A discloses an electric operating mechanism of a circuit breaker chassis truck, wherein a rotor shaft of the motor finally drives an output gear to rotate after passing through a reduction gear set, a gear clutch and a transition gear set, and the output gear is assembled on a screw rod to drive the screw rod to rotate together.
In practice, the lead screw cannot rotate due to other mechanical faults, or the gear clutch and the transition gear set are stuck due to abrasion, the power of the motor is continuously output at the moment, and the motor is burnt out finally.
Therefore, the existing electric operating mechanism has no overload protection function, and the condition of motor burnout happens occasionally.
SUMMERY OF THE UTILITY MODEL
The utility model provides a chassis car electric drive mechanism with overload protection function, it has overcome the not enough that the background art exists. The utility model provides a technical scheme that its technical problem adopted is:
the chassis truck electric driving mechanism with the overload protection function comprises a motor, a reduction gear set, a gear clutch, a transition gear set and an output gear which are sequentially connected in a transmission manner, wherein the reduction gear set comprises four stages of reduction gears which are sequentially connected in a transmission manner, an output shaft of the motor is connected with the reduction gear of the first stage in a transmission manner, the reduction gear of the fourth stage is connected with the gear clutch in a transmission manner, one of the reduction gears comprises a connecting shaft, an upstream fluted disc, a friction disc and a downstream fluted disc, the upstream fluted disc, the friction disc and the downstream fluted disc are all sleeved on the connecting shaft, the upstream fluted disc and the downstream fluted disc clamp the friction disc, and the upstream fluted disc and the downstream fluted disc respectively form mutually opposite friction surfaces with; when the clutch works normally, the upstream fluted disc, the friction disc and the downstream fluted disc rotate synchronously, and when the clutch is overloaded, the downstream fluted disc stops rotating and idles.
In a preferred embodiment: the second-stage reduction gear comprises a connecting shaft, an upstream fluted disc, a friction disc and a downstream fluted disc; the upstream fluted disc is in transmission connection with the reduction gear of the first stage, and the downstream fluted disc is in transmission connection with the reduction gear of the third stage.
In a preferred embodiment: the friction disc clamping mechanism further comprises an elastic piece and a locking nut, wherein the elastic piece and the locking nut are sleeved on the connecting shaft, one end of the elastic piece props against the locking nut, and the tension force of the elastic piece drives the upstream fluted disc and the downstream fluted disc to clamp the friction disc.
In a preferred embodiment: the other end of the elastic piece is propped against the downstream fluted disc.
In a preferred embodiment: the resilient member is a belleville spring.
In a preferred embodiment: the upstream fluted disc, the friction disc and the downstream fluted disc are connected with the connecting shaft in a clearance fit manner.
In a preferred embodiment: the gear clutch comprises a driving fluted disc and a driven fluted disc which can be mutually jointed or separated, and the fourth-stage reduction gear is in transmission connection with the driving fluted disc; the transition gear set comprises a first transition gear and a second transition gear which are in transmission connection, the first transition gear is in transmission connection with the driven fluted disc, and the second transition gear is in transmission connection with the output gear.
Compared with the background technology, the technical scheme has the following advantages:
1. in the gear set, one of the reduction gears structurally comprises a connecting shaft, an upstream fluted disc, a friction disc and a downstream fluted disc, wherein the friction disc is clamped between the upstream fluted disc and the downstream fluted disc and respectively forms friction surfaces opposite to the upstream fluted disc and the downstream fluted disc, so that the upstream fluted disc can drive the downstream fluted disc to rotate through the friction disc when rotating under a normal state, the downstream fluted disc cannot rotate under the condition that a gear clutch, a transition gear set and an output gear are stuck, and the upstream fluted disc idles under the transition of the friction disc, so that the motor is prevented from being burnt.
2. The overload protection position is arranged on the reduction gear of the second stage, so that the compact characteristic of the electric driving mechanism can be kept, the electric driving mechanism is closer to the motor, and the protection effect is better.
3. The tension of the elastic piece drives the upstream fluted disc and the downstream fluted disc to clamp the friction disc, so that the friction force between the upstream fluted disc and the friction disc can be adjusted, and the overload power can be adjusted.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a perspective view of a chassis electric drive mechanism having an overload protection function.
Fig. 2 shows a top view of a chassis electric drive mechanism with overload protection.
Fig. 3 shows an exploded view of a chassis electric drive mechanism with overload protection.
Fig. 4 shows a sectional view of a reduction gear of the chassis electric drive mechanism having the overload protection function.
Detailed Description
Referring to fig. 1 to 4, the chassis electric driving mechanism with overload protection function includes a motor 10, a reduction gear set 20, a gear clutch 30, a transition gear set 40 and an output gear 50, which are sequentially connected in a transmission manner. The reduction gear set 20 includes four reduction gears in sequential transmission connection, which are a first reduction gear 21, a second reduction gear 22, a third reduction gear 23, and a fourth reduction gear 24, wherein the first reduction gear 21 is in transmission connection with an output shaft of the motor 10, and the fourth reduction gear 24 is in transmission connection with a gear clutch 30.
The reduction gear 22 of the second stage includes a connecting shaft 221, an upstream toothed plate 222, friction plates 223, and a downstream toothed plate 224, the upstream toothed plate 222, the friction plates 223, and the downstream toothed plate 224 are all fitted over the connecting shaft 221, the upstream toothed plate 222 and the downstream toothed plate 224 clamp the friction plates 223, and the upstream toothed plate 222 and the downstream toothed plate 224 respectively form friction surfaces opposite to each other with the friction plates 223. The upstream toothed disc 222 is in driving connection with the reduction gear 21 of the first stage, and the downstream toothed disc 224 is in driving connection with the reduction gear 23 of the third stage. During normal operation, the upstream toothed disc 222, the friction discs 223 and the downstream toothed disc 224 rotate synchronously, and during overload, the downstream toothed disc 224 stops rotating and the upstream toothed disc 222 idles.
It is understood that the overload protection can also be provided at the reduction gear 21 of the first stage or at the reduction gear 23 of the third stage or at the reduction gear 24 of the fourth stage. If the reduction gear 21 is arranged at the first stage, the upstream toothed disc is in driving connection with the output shaft of the motor, and the downstream toothed disc is in driving connection with the reduction gear of the second stage. If the reduction gear 23 of the third stage is provided, the upstream toothed disc is in driving connection with the reduction gear of the second stage and the downstream toothed disc is in driving connection with the reduction gear of the fourth stage. If the reduction gear 24 is arranged in the fourth stage, the upstream toothed disk is in driving connection with the reduction gear of the third stage and the downstream toothed disk is in driving connection with the gear clutch.
Preferably, the clutch further comprises an elastic member 225 and a lock nut 226 sleeved on the connecting shaft 221, one end of the elastic member 225 abuts against the lock nut 226, and the tension of the elastic member 225 drives the upstream toothed plate 222 and the downstream toothed plate 224 to clamp the friction disc 223. In this embodiment, the other end of the resilient member 225 abuts against the downstream toothed disc 224.
The elastic member 225 is preferably a belleville spring. In addition, in the present embodiment, the upstream toothed disc 222, the friction disc 223 and the downstream toothed disc 224 are all connected with the connecting shaft 221 in a clearance fit manner, so that the assembly is convenient.
The gear clutch 30 includes a driving gear 31 and a driven gear 32 that can be engaged with and disengaged from each other, and the fourth stage reduction gear 24 is drivingly connected to the driving gear 31. The transition gear set 40 includes a first transition gear 41 and a second transition gear 42, the first transition gear 41 is in transmission connection with the driven fluted disc 32, and the second transition gear 42 is in transmission connection with the output gear 50. The output gear 50 is sleeved on the screw rod to drive the screw rod to rotate synchronously.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (7)
1. Chassis car electric drive mechanism with overload protection function, including motor, reduction gear group, gear clutch, transition gear group and the output gear that the transmission is connected in proper order, this reduction gear group is connected including the level four reduction gear that the transmission is connected in proper order, the output shaft of this motor and the reduction gear transmission of first order are connected, the reduction gear of level four is connected its characterized in that with this gear clutch transmission:
one of the speed reducing gears comprises a connecting shaft, an upstream fluted disc, a friction disc and a downstream fluted disc, wherein the upstream fluted disc, the friction disc and the downstream fluted disc are sleeved on the connecting shaft, the upstream fluted disc and the downstream fluted disc clamp the friction disc, and the upstream fluted disc and the downstream fluted disc respectively form friction surfaces opposite to each other with the friction disc; when the clutch works normally, the upstream fluted disc, the friction disc and the downstream fluted disc rotate synchronously, and when the clutch is overloaded, the downstream fluted disc stops rotating and idles.
2. The electric drive mechanism for a chassis having an overload protection function according to claim 1, wherein: the second-stage reduction gear comprises a connecting shaft, an upstream fluted disc, a friction disc and a downstream fluted disc; the upstream fluted disc is in transmission connection with the reduction gear of the first stage, and the downstream fluted disc is in transmission connection with the reduction gear of the third stage.
3. The chassis vehicle electric drive mechanism with an overload protection function according to claim 1 or 2, characterized in that: the friction disc clamping mechanism further comprises an elastic piece and a locking nut, wherein the elastic piece and the locking nut are sleeved on the connecting shaft, one end of the elastic piece props against the locking nut, and the tension force of the elastic piece drives the upstream fluted disc and the downstream fluted disc to clamp the friction disc.
4. The electric drive mechanism for a chassis having an overload protection function according to claim 3, wherein: the other end of the elastic piece is propped against the downstream fluted disc.
5. The electric drive mechanism for a chassis having an overload protection function according to claim 3, wherein: the resilient member is a belleville spring.
6. The electric drive mechanism for a chassis having an overload protection function according to claim 1, wherein: the upstream fluted disc, the friction disc and the downstream fluted disc are connected with the connecting shaft in a clearance fit manner.
7. The electric drive mechanism for a chassis having an overload protection function according to claim 1, wherein: the gear clutch comprises a driving fluted disc and a driven fluted disc which can be mutually jointed or separated, and the fourth-stage reduction gear is in transmission connection with the driving fluted disc; the transition gear set comprises a first transition gear and a second transition gear which are in transmission connection, the first transition gear is in transmission connection with the driven fluted disc, and the second transition gear is in transmission connection with the output gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525353.8U CN210926843U (en) | 2019-09-12 | 2019-09-12 | Chassis vehicle electric driving mechanism with overload protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921525353.8U CN210926843U (en) | 2019-09-12 | 2019-09-12 | Chassis vehicle electric driving mechanism with overload protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210926843U true CN210926843U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921525353.8U Active CN210926843U (en) | 2019-09-12 | 2019-09-12 | Chassis vehicle electric driving mechanism with overload protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210926843U (en) |
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2019
- 2019-09-12 CN CN201921525353.8U patent/CN210926843U/en active Active
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