CN201180077Y

CN201180077Y - Jack

Info

Publication number: CN201180077Y
Application number: CNU2007201885703U
Authority: CN
Inventors: 胡大杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-19
Filing date: 2007-12-19
Publication date: 2009-01-14
Anticipated expiration: 2017-12-19

Abstract

The utility model provides a hoisting device, comprising a lower pedestal, an upper pedestal and four support frames, wherein every two support frames are hinged to form a supporting arm group; one end of the supporting arm group is hinged with the upper pedestal, while the other end of the supporting arm group is hinged with the lower pedestal; an adjusting screw stem is arranged between supporting arms; the rotating end of the adjusting screw is connected with a power machine through a planet gear transmission mechanism; the planet gear transmission mechanism comprises an inner gear ring, a planet gear, a drive end shell and a driven end shell, wherein the inner gear ring is fixed in the drive end shell; the drive end shell is sleeved on an output shaft of the power machine; the end head of the output shaft is provided with a spline tooth; the spline tooth position of the output shaft is sleeved with a planet gear support; the planet gear support is movably positioned in the driven end shell; the planet gear is arranged on the circumstance of the planet gear support; the spline tooth and the inner gear ring are respectively engaged with the planet gear; and the planet gear support is provided with a power output shaft. The hoisting device has the advantages of simple structure, small labor intensity, high efficiency, low manufacturing cost.

Description

Lifting device

Technical field

The utility model relates to a kind of device that supports weight, particularly a kind of lifting device.

Background technology

Jack is the common tool in people's daily life, jack commonly used has hand-hydraulic formula and automatic hydraulic formula, hand-hydraulic formula jack in use, labour intensity is big, make the people produce fatigue easily, efficient is low, automatic hydraulic formula jack in use, railway carriage as the lifting motor-tricycle, elevating ram drives with engine output power, also need to be provided with a special dual-range transmission at the driving engine mouth and drive elevating ram, topology layout is complicated, and manufacturing and use cost are higher.

The utility model content

The purpose of this utility model just provide a kind of simple in structure, labour intensity is little, efficient is high, manufacturing and the low lifting device of use cost.

For achieving the above object, lifting device described in the utility model, comprise bottom base, top base and four bracing frames, become one group of hold-down arm after hinged between per two bracing frames, one end and the top base of every group of hold-down arm are hinged, the other end and bottom base are hinged, be provided with adjusting screw(rod) between two groups of hold-down arms, it is characterized in that: the round end of adjusting screw(rod) is connected with engine by planetary gear mechanism, described planetary gear mechanism comprises internally toothed annulus, planetary wheel, drive end housing and driven end housing, drive end housing and driven end housing are together fixed to one another by bolt, internally toothed annulus is fixed in the drive end housing, the drive end housing is enclosed within on the output shaft of engine, the termination of output shaft is provided with spline tooth, spline tooth position at output shaft is with planetary gear carrier, planetary gear carrier is positioned at the driven end housing versatilely, planetary wheel is installed on the circumference of planetary gear carrier, planetary wheel respectively with spline tooth, internally toothed annulus is meshing with each other, and planetary gear carrier has the power take-off shaft affixed with the round end of adjusting screw(rod).

As can be used for the lifting railway carriage on the vehicle frame that the utility model is installed in motor-tricycle, the power of engine output, driving planetary wheel by spline tooth rotates along internally toothed annulus, promptly driving planetary gear carrier rotates, by driving the adjusting screw(rod) rotation after the epicyclic transmission mechanism speed change, the one, draw two groups of hold-down arms over to one's side and play the effect of lifting railway carriage, the one, separately two groups of hold-down arms play the effect of putting down railway carriage.The type of drive of planetary wheeling mechanism, make simple in structure, make and use cost lower, drive by engine and to rise or to descend, reduced labour intensity, improved efficient.

Owing to adopted technique scheme, the utlity model has following advantage: simple in structure, labour intensity is little, efficient is high, manufacturing and cost are low.

Description of drawings

Fig. 1 is the structural representation of first kind of embodiment of the utility model;

Fig. 2 is a bonded assembly scheme drawing between planetary gear mechanism and the engine 3 among Fig. 1;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is the B-B cutaway view of Fig. 3;

Fig. 5 is for being the structural representation of second kind of embodiment of the utility model;

Fig. 6 is a bonded assembly scheme drawing between worm and wormwheel casing among Fig. 5, planetary gear mechanism and the engine 3;

Fig. 7 is the C-C cutaway view of Fig. 6.

Among the figure: 1. bottom base; 2. top base; 3. engine; 4. bracing frame; 5. bracing frame; 6. bracing frame; 7. bracing frame; 8. adjusting screw(rod); 9. internally toothed annulus; 10. planetary wheel; 11. drive end housing; 12. driven end housing; 13. output shaft; 14. spline tooth; 15. planetary gear carrier; 16. power take-off shaft; 17. power input shaft; 18. output shaft; 19. worm and wormwheel casing; 20. worm screw; 21. worm gear.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, the utility model comprises bottom base 1, top base 2, bracing frame 4, bracing frame 5, bracing frame 6, bracing frame 7, become one group of hold-down arm after hinged between per two bracing frames, one end and the top base 2 of every group of hold-down arm are hinged, the other end and bottom base 1 are hinged, be provided with adjusting screw(rod) 8 between two groups of hold-down arms, it is characterized in that: the round end of adjusting screw(rod) 8 is connected with engine 3 by planetary gear mechanism, as Fig. 2,3, shown in 4, described planetary gear mechanism comprises internally toothed annulus 9, planetary wheel 10, drive end housing 11 and driven end housing 12, drive end housing 11 is together fixed to one another by bolt with driven end housing 12, internally toothed annulus 9 is fixed in the drive end housing 11, drive end housing 11 is enclosed within on the output shaft 13 of engine 3, the termination of output shaft 13 is provided with spline tooth 14, spline tooth position at output shaft 13 is with planetary gear carrier 15, planetary gear carrier 15 is positioned at driven end housing 12 versatilely, planetary wheel 10 is installed on the circumference of planetary gear carrier 15, planetary wheel 10 respectively with spline tooth 14, internally toothed annulus 9 is meshing with each other, and planetary gear carrier 15 has the power take-off shaft 16 affixed with the round end of adjusting screw(rod) 8.

Engine 3 in the utility model can be motor, also can be the driving engine of self-propelled vehicle.The utility model can be used for the body lifting on the motor-tricycle, also can be used for the weight lifting in the vehicle maintenance and repair process, can also be used for the weight lifting of others, as when being used for the lifting railway carriage, the bottom base in the utility model is installed on the vehicle frame of motor-tricycle, provide power by motor, power is delivered on the adjusting screw(rod) by power take-off shaft after passing through satellite gear, inner rim speed change, drives the adjusting screw(rod) rotation, draw two groups of hold-down arms over to one's side, thus the lifting railway carriage.Motor reverses again, drives the adjusting screw(rod) counter-rotating, and separately two groups of hold-down arms descend railway carriage, thereby put down railway carriage.

Between power take-off shaft 16 and adjusting screw(rod) 8, speed-changing mechanism is installed as Fig. 5.Behind two stage speed change, drive adjusting screw(rod) and rotate, draw two groups of hold-down arms over to one's side, thereby the lifting railway carriage can increase the weight of lifting.

Shown in Fig. 5,6, described speed-changing mechanism comprises the worm and wormwheel casing 19 of drive input shaft 17 and output shaft 18, power input shaft 17 is connected 16 with power take-off shaft on the planetary gear carrier 10, has worm screw 20 on the power input shaft 17, have worm gear 21 on the output shaft 18, the termination of output shaft 18 and the round end of adjusting screw(rod) are affixed.Carry out the power after the speed change one time by satellite gear, inner rim, as shown in Figure 7, carry out the secondary speed change by worm screw, worm gear again after, be delivered on the adjusting screw(rod) by output shaft 18, drive the adjusting screw(rod) rotation, draw two groups of hold-down arms over to one's side, thus the lifting railway carriage.Described speed-changing mechanism also can be the change-speed box of other structure, to realize the purpose of speed change.

The number of planetary wheel 10 can be one, and as shown in Figure 4, the number of planetary wheel 10 can two, and it also can be three, can also be provided with a plurality of as required.

Claims

1. lifting device, comprise bottom base (1), top base (2) and four bracing frames (4,5,6,7), become one group of hold-down arm after hinged between per two bracing frames, one end of every group of hold-down arm and top base (2) are hinged, the other end and bottom base (1) are hinged, be provided with adjusting screw(rod) (8) between two groups of hold-down arms, it is characterized in that: the round end of adjusting screw(rod) (8) is connected with engine (3) by planetary gear mechanism, described planetary gear mechanism comprises internally toothed annulus (9), planetary wheel (10), drive end housing (11) and driven end housing (12), drive end housing (11) is together fixed to one another by bolt with driven end housing (12), internally toothed annulus (9) is fixed in the drive end housing (11), drive end housing (11) is enclosed within on the output shaft (13) of engine (3), the termination of output shaft (13) is provided with spline tooth (14), be with planetary gear carrier (15) at the spline tooth position of output shaft (13), planetary gear carrier (15) is positioned at driven end housing (12) versatilely, planetary wheel (10) is installed on the circumference of planetary gear carrier (15), planetary wheel (10) respectively with spline tooth (14), internally toothed annulus (9) is meshing with each other, and planetary gear carrier (15) has the affixed power take-off shaft (16) of round end with adjusting screw(rod) (8).

2. lifting device as claimed in claim 1 is characterized in that: between power take-off shaft (16) and adjusting screw(rod) (8) speed-changing mechanism is installed.

3. lifting device as claimed in claim 2, it is characterized in that: described speed-changing mechanism comprises the worm and wormwheel casing (19) of drive input shaft (17) and output shaft (18), power input shaft (17) is connected (16) with power take-off shaft on the planetary gear carrier (10), has worm screw (20) on the power input shaft (17), have worm gear (21) on the output shaft (18), the termination of output shaft (18) and the round end of adjusting screw(rod) are affixed.

4. lifting device as claimed in claim 1 is characterized in that: the number of planetary wheel (10) be one, two, three or more.