CN217478962U

CN217478962U - Electric jack

Info

Publication number: CN217478962U
Application number: CN202123348215.7U
Authority: CN
Inventors: 刘明斋
Original assignee: Hangzhou Rock Machinery Manufacture Co ltd
Current assignee: Hangzhou Rock Machinery Manufacture Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-09-23
Anticipated expiration: 2031-12-28

Abstract

Electric jack belongs to jack technical field, including motor element, gear assembly and lifting unit, motor element with the gear assembly is connected, the gear assembly with lifting unit connects, the gear assembly includes gear housing and slewing mechanism, gear housing with slewing mechanism connects, gear housing includes ring gear casing and apron, the ring gear casing with the apron is connected, slewing mechanism includes sun gear, planetary wheel group and internal gear dish, the sun gear with the planetary wheel group is connected, the planetary wheel group with the internal gear dish is connected, the sun gear drives the planetary wheel group rotates, the planetary wheel group drives the internal gear dish rotates. The planetary wheel structure is used, so that the speed reduction and torque increase between the motor and the trapezoidal screw rod are realized, the structure is more compact, the transmission ratio is large, the bearing capacity is high, and the assembly is simple.

Description

Electric jack

Technical Field

The utility model belongs to the technical field of the jack, especially, relate to electric jack.

Background

At present, the application of the lifting jack is more and more extensive, so the requirement on the lifting jack is higher and higher, and the requirement on the deceleration of the electric lifting jack is higher and higher. At present, an electric jack generally realizes speed reduction through a multi-stage fixed-shaft gear train or uses a speed reduction motor to reduce speed, but the gear structure is complex, and the required transmission ratio can be achieved through multi-stage speed reduction generally, so that the structure of a general gear box is relatively large, and the assembly of parts is complex. Although the overall structure can be reduced by using the speed reducing motor, the size of the motor is limited, and the motor with the same size cannot achieve larger transmission ratio and larger torque.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric jack, under the prerequisite of guaranteeing required drive ratio and moment of torsion, make the gear assembly structure compacter simple, reduced the assembly process.

Electric jack, including motor element, gear assembly and lifting unit, motor element with the gear assembly is connected, the gear assembly with lifting unit connects, the gear assembly includes gear housing and slewing mechanism, gear housing with slewing mechanism connects, gear housing includes ring gear casing and apron, ring gear casing with the cover connection, slewing mechanism includes sun gear, planetary wheel group and internal gear dish, the sun gear with the planetary wheel group is connected, the planetary wheel group with the internal gear dish is connected, the sun gear drives the planetary wheel group rotates, the planetary wheel group drives the internal gear dish rotates.

Further, the motor assembly is fixedly connected with the gear shell, and the motor assembly is movably connected with the rotating mechanism.

Further, the sun gear is connected with the motor component, and the motor component drives the sun gear to rotate.

Furthermore, the sun wheel is connected with a shaft elastic retainer ring, and the shaft elastic retainer ring is also connected with the motor assembly.

Further, the planetary gear set is movably connected with the upper end of the gear ring shell.

Furthermore, a wear-resistant belt is arranged between the gear ring shell and the inner gear disc, and a gasket is further arranged between the inner gear disc and the cover plate.

Further, the lifting assembly comprises a screw, a lifting mechanism and a supporting mechanism, the screw is connected with the lifting mechanism, and the lifting mechanism is connected with the supporting mechanism.

Furthermore, a coupler is arranged on the screw rod and fixedly connected with the screw rod, the coupler is further connected with the inner gear disc, and the rotation of the inner gear disc drives the rotation of the screw rod.

Further, elevating system includes outer tube and mounting panel, the outer tube with the mounting panel is connected, still be equipped with the axle sleeve in the outer tube, the axle sleeve with outer tube fixed connection, the axle sleeve still is connected with the bearing, the bearing with the screw rod is connected, the lift of screw rod drives elevating system's lift.

Further, the supporting mechanism comprises a base, a fixed pipe and an inner contraction pipe, the base is fixedly connected with the fixed pipe, the fixed pipe is fixedly connected with the inner contraction pipe, and the inner contraction pipe is matched with the screw rod.

The utility model has the advantages of it is following: the planetary gear structure is used, so that the speed reduction and torque increase between the motor and the trapezoidal screw are realized, the structure is more compact, the transmission ratio is high, the bearing capacity is high, and the assembly is simple.

Drawings

FIG. 1 is an exploded view of the motor assembly and gear assembly structure of the present invention;

FIG. 2 is an exploded view of the overall structure of the present invention;

FIG. 3 is an enlarged cross-sectional view of the gear assembly of the present invention;

FIG. 4 is a partially enlarged cross-sectional view of the connection between the lifting mechanism and the screw rod of the present invention;

fig. 5 is a cross-sectional view of the overall structure of the present invention;

the symbols in the figure illustrate: 1. a motor assembly; 2. a sun gear; 3. a circlip for the shaft; 4. a planetary gear set; 5. a ring gear housing; 6. a wear-resistant band; 7. an inner gear plate; 8. a gasket; 9. a cover plate; 10. a coupling; 11. a screw; 12. a bearing; 13. a shaft sleeve; 14. an outer tube; 15. mounting a plate; 16. a base; 17. fixing the tube; 18. and (7) internally shrinking the pipe.

Detailed Description

For better understanding of the objects, structure and functions of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

Electric jack, including motor element 1, gear assembly and lifting unit, motor element 1 with the gear assembly is connected, the motor drives the gear assembly rotates, the gear assembly with lifting unit connects, gear assembly control lifting unit's lift.

As shown in fig. 1, 2 and 3, the gear assembly includes a gear housing and a rotating mechanism, the gear housing is connected to the rotating mechanism, the motor assembly 1 is fixedly connected to the gear housing, and the motor assembly 1 is movably connected to the rotating mechanism.

Gear housing includes ring gear casing 5 and apron 9, ring gear casing 5 with apron 9 is connected, motor element 1 with ring gear casing 5 is connected, ring gear casing 5 with apron 9 can carry out fixed connection through the fastener, motor element 1 with ring gear casing 5 also can carry out fixed connection through the fastener.

Slewing mechanism includes sun gear 2, planet wheelset 4 and internal gear dish 7, sun gear 2 with planet wheelset 4 is connected, planet wheelset 4 with internal gear dish 7 is connected, sun gear 2 drives planet wheelset 4 rotates, planet wheelset 4 drives internal gear dish 7 rotates.

The sun gear 2 is connected with the motor component 1, and the motor component 1 drives the sun gear 2 to rotate. The bottom of the sun wheel 2 is connected with a circlip 3 for the shaft, and the circlip 3 for the shaft is also connected with the motor component 1 and has an axial limiting effect.

The planetary gear set 4 comprises a planetary gear and a planetary gear shell, and the planetary gear is movably connected with the planetary gear shell. The planetary wheel set 4 is connected with the gear ring shell 5, and the planetary wheel set 4 is movably connected with the upper end of the gear ring shell 5.

The internal gear disc 7 is arranged inside the gear ring shell 5, and the wear-resistant belt 6 is arranged between the gear ring shell 5 and the internal gear disc 7, so that the wear of the gear ring shell 5 and the internal gear disc 7 can be reduced. The internal gear dish 7 sets up the top of apron 9, internal gear dish 7 with still be equipped with packing ring 8 between the apron 9, packing ring 8 can be the nylon materials, can be used for reducing apron 9 with the wearing and tearing of internal gear dish 7.

As shown in fig. 4 and 5, the lifting assembly includes a screw 11, a lifting mechanism and a supporting mechanism, the screw 11 is connected with the lifting mechanism, and the lifting mechanism is connected with the supporting mechanism.

The screw rod 11 is provided with a coupler 10, the coupler 10 is fixedly connected with the screw rod 11, and the coupler 10 can be connected with the screw rod 11 through a fastening piece. The coupler 10 is further connected with the inner gear disc 7, and the rotation of the inner gear disc 7 drives the rotation of the screw rod 11. Preferably, the screw 11 is a trapezoidal screw 11.

The lifting mechanism comprises an outer tube 14 and a mounting plate 15, the outer tube 14 is connected with the mounting plate 15, and the outer tube 14 and the mounting plate 15 can be of an integrated structure. The outer tube 14 is also connected with the cover plate 9, and the outer tube 14 can be fixedly connected with the cover plate 9 through a fastener.

Still be equipped with axle sleeve 13 in the outer tube 14, axle sleeve 13 with outer tube 14 fixed connection, axle sleeve 13 still is connected with bearing 12, bearing 12 can set up the upper end and the lower extreme of axle sleeve 13, bearing 12 can be plane thrust ball bearing 12. The bearing 12 is connected with the screw rod 11, and the lifting of the screw rod 11 drives the lifting mechanism to lift.

The supporting mechanism comprises a base 16, a fixing pipe 17 and an inner contraction pipe 18, the base 16 is fixedly connected with the fixing pipe 17, the fixing pipe 17 is fixedly connected with the inner contraction pipe 18, the fixing pipe 17 is connected with the inner contraction pipe 18 through a fastener, and the fastener comprises a step pin. The inner reducing pipe 18 is matched with the screw rod 11, so that the screw rod 11 can freely lift after rotating.

The working process of the electric jack is as follows: power is transmitted to a sun gear 2 combined with the motor assembly 1 through the motor assembly 1, and then is sequentially transmitted to a planet gear, an inner gear disc 7, a coupler 10, a trapezoidal screw 11, a plane thrust ball bearing 12, a shaft sleeve 13, an outer pipe 14 and an installation plate 15 through the sun gear 2, and finally lifting or falling of a vehicle is achieved.

The utility model discloses use the planet wheel structure, realize that the motor increases the turn round to the speed reduction between trapezoidal screw rod for the structure is more compact, and the drive ratio is big, and bearing capacity is high, and the assembly is simple, simple structure.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. Electric jack, its characterized in that, including motor element, gear assembly and lifting unit, motor element with the gear assembly is connected, the gear assembly with lifting unit connects, the gear assembly includes gear housing and slewing mechanism, gear housing with slewing mechanism connects, gear housing includes ring gear casing and apron, the ring gear casing with the apron is connected, slewing mechanism includes sun gear, planetary wheel group and internal gear dish, the sun gear with the planetary wheel group is connected, the planetary wheel group with the internal gear dish is connected, the sun gear drives the planetary wheel group rotates, the planetary wheel group drives the internal gear dish rotates.

2. The motorized jack of claim 1, wherein the motor assembly is fixedly coupled to the gear housing, and the motor assembly is movably coupled to the rotation mechanism.

3. The electric jack of claim 2, wherein the sun gear is connected to the motor assembly, and the motor assembly rotates the sun gear.

4. The motorized jack of claim 3, wherein the sun gear is connected to a circlip for the shaft, the circlip for the shaft further connected to the motor assembly.

5. The electric jack of claim 3, wherein the planetary gear set is movably connected to the upper end of the ring gear housing.

6. The electric jack of claim 5, wherein a wear strip is provided between the ring gear housing and the inner gear plate, and a gasket is provided between the inner gear plate and the cover plate.

7. The electric jack of any one of claims 1 to 6, wherein the lifting assembly comprises a screw, a lifting mechanism and a support mechanism, the screw is connected with the lifting mechanism, and the lifting mechanism is connected with the support mechanism.

8. The electric jack of claim 7, wherein the screw is provided with a coupler, the coupler is fixedly connected with the screw, the coupler is further connected with the inner gear plate, and the rotation of the inner gear plate drives the rotation of the screw.

9. The electric jack of claim 8, wherein the lifting mechanism comprises an outer tube and a mounting plate, the outer tube is connected to the mounting plate, a shaft sleeve is further disposed in the outer tube, the shaft sleeve is fixedly connected to the outer tube, the shaft sleeve is further connected to a bearing, the bearing is connected to the screw, and the lifting of the screw drives the lifting mechanism to lift.

10. The electric jack of claim 9, wherein the support mechanism comprises a base, a fixed tube and an inner shrinking tube, the base is fixedly connected with the fixed tube, the fixed tube is fixedly connected with the inner shrinking tube, and the inner shrinking tube is matched with the screw rod.