CN2214405Y - Jack - Google Patents
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- Publication number
- CN2214405Y CN2214405Y CN 94248081 CN94248081U CN2214405Y CN 2214405 Y CN2214405 Y CN 2214405Y CN 94248081 CN94248081 CN 94248081 CN 94248081 U CN94248081 U CN 94248081U CN 2214405 Y CN2214405 Y CN 2214405Y
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- China
- Prior art keywords
- gear
- screwed pipe
- wall
- overcoat
- outside
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Abstract
The utility model relates to a jack, comprising a lifting screw set, a chassis gear, a base, a casing, and a motor. The motor is fixed on the housing of a planetary gear set, the housing is fixed on the casing, the inner wall of the housing is provided with an internal gear, a speed changing unit which is composed of a planetary gear and a planet support is arranged in the housing, the planetary support is provided with a planetary gear shaft, the center of the planetary support is provided with a central gear, the outer wall of the housing is provided with an infrared receiver, and the center point of the central gear is provided with a polygonal concaved chamber. The utility model has the advantages of small size, low height, smooth lifting, long lifting height, and simple structure. The utility model can be lifted in an electric way, a manual way, and a wireless remote control way.
Description
The utility model relates to a kind of jack, particularly the remote control electric jack.
In the prior art, electronic jack mainly contains screw rod, screwed pipe, the chassis gear, base and shell constitute jacking system, screw rod contracts with the Shen that is threaded with screwed pipe, screw rod links to each other with the chassis gear, the chassis gear that goes to tend to act after being to adopt electrical motor to slow down by retarder aspect the transmission drives jacking system and carries out lifting, particularly as recovery equipment with car, if volume is big, must account for sizable space in the tool car, and be not easy to again in some narrow spaces to place and operation, and when screw rod and screwed pipe rotate to the end, locking easily, China Patent No. is 92238696.X, name is called and discloses a kind of electronic jack in a kind of electronic jack, its drive mechanism is the worm gear engagement of worm screw on the motor main shaft and gear cluster, again by the such one-level level of other gear of worm gear drives transmission gear shift, electrical motor must be horizontally-arranged like this, under the certain condition of rising or falling speed, if number of steps of speeds is few, the rotating speed of inevitable electrical motor is low, power of electric motor increases, the also corresponding increase of volume if the rotating speed of electrical motor is certain, needs multi-change speed, then inevitable speed-changing mechanism volume will increase brokenly, thereby causes the volume of jack to increase.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and provides a kind of volume little, and is highly low; Lifting is smooth and easy, and adjustable height is long, and is simple in structure, but both electric up-downs is convenient to the remote control electric jack of hand-operated lifting again.
The purpose of this utility model can reach by following measure: a kind of jack, comprise lifting screw cover group, the chassis gear, base, shell and electrical motor, it is characterized in that described electrical motor is fixed on the outer of compound planet gear and puts, overcoat is fixed on the shell, the inwall of overcoat is provided with inner gear, in overcoat, be provided with the variable-speed unit that constitutes by planetary wheel and pinion carrier, on pinion carrier, be provided with compensating-gear shaft, there is sun gear center in pinion carrier, planetary wheel is enclosed within on the compensating-gear shaft, the engagement of driven wheel on planetary wheel and the motor reel and puts inner gear engagement, sun gear and chassis gear mesh outward.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that the screw rod in the described lifting screw cover group is connected with negative thread beyond the interior screwed pipe, interior screwed pipe is connected with negative thread beyond the outer screwed pipe, and ferrule sleeve is connected with negative thread beyond the outer screwed pipe.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is the screw mandrel diameter of the top end diameter of the screw rod in the described lifting screw cover group greater than its underpart, the internal thread diameter of interior screwed pipe bottom is less than the bore on its top, the negative thread of outer screwed pipe bottom cooperates with interior screwed pipe outside thread, the negative thread of outer screwed pipe upper end cooperates with the outside thread of ferrule sleeve, outer screwed pipe central tube internal diameter is greater than the ferrule sleeve external thread diameter, and ferrule sleeve tube internal diameter is greater than interior screwed pipe external thread diameter.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that the top of the screw rod in the described lifting screw cover group is provided with a groove, inside pipe wall in interior screwed pipe upper end is provided with ring groove, on the tube wall below the ring groove, be provided with two slotted holes, between two slotted holes, be provided with bayonet lock, bayonet lock is longer than the internal diameter of outer screwed pipe bottom, is provided with snap ring in ring groove, is provided with spring between snap ring and bayonet lock.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that described outer screwed pipe outer wall is provided with a directed groove A, screwed pipe is with outer tube outward outside, on the inwall of outer tube, be provided with directed projection, on the outer wall of outer tube, be provided with orientation notch B, two ends at the outer wall of outer tube are respectively equipped with spacing card, screwed pipe upper end outer wall is provided with the lower limit card, the lower limit card of screwed pipe outside being provided with on the outer wall of the lower end of interior screwed pipe outside.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that described pinion carrier is provided with three compensating-gear shafts, there are three planetary wheels to be enclosed within on the compensating-gear shaft, three planetary wheels all with motor reel on the driven wheel external toothing, mesh with putting in the inner gear outward.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that two variable-speed units are arranged in the described overcoat.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is also to be provided with intermediate gear between described planet axis gear and the chassis gear, intermediate gear is enclosed within on the counter gear shaft that is fixed on the chassis, is provided with a polygon cavity in the center of intermediate gear.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is that the outer wall of described overcoat is provided with infrared receiver.
The purpose of this utility model can also reach by following measure: according to jack recited above, the present technique key is to be provided with surface bearing between described chassis gear and the base.
The utility model has following advantage than prior art: volume is little, and highly low, lifting is smooth and easy, and adjustable height is long, and is simple in structure, but both electric up-downs is convenient to hand-operated lifting again, has the function of wireless remote control simultaneously.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the utility model jack structure scheme drawing.
Fig. 2 is the structural representation of lifting screw cover group (1) among Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 1.
The utility model is described in further detail below in conjunction with accompanying drawing embodiment:
Consult Fig. 1, a kind of jack, comprise lifting screw cover group (1), chassis gear (2), base (3), shell (4) and electrical motor (5), electrical motor (5) is fixed on the overcoat (7) of compound planet gear (6), overcoat (7) is fixed on the shell (4), the inwall of overcoat (7) is provided with inner gear, in overcoat (7), be provided with the variable-speed unit that constitutes by planetary wheel (8) and pinion carrier (9), on pinion carrier (9), be provided with compensating-gear shaft (10), in the center of pinion carrier (9) sun gear (11) is arranged, planetary wheel (8) is enclosed within on the compensating-gear shaft (10), driven wheel (12) engagement on planetary wheel (8) and the motor reel, go up the inner gear engagement with overcoat (7), sun gear (11) and chassis gear (2) engagement.Constitute a delicate structure, compactness, failure-free transmission system thus, when electrical motor (5) rotates, driven wheel on it (12) drives planetary wheel (8) rotation, inwall around overcoat (7) rotates on the inner gear of overcoat (7) simultaneously, by being fixed on the compensating-gear shaft (10) on the pinion carrier (9), drive pinion carrier (9) again and rotate, carry out lifting thereby drive chassis gear (2) control lifting screw cover group (6).Also be provided with intermediate gear (29) between planet shaft gear (8) and chassis gear (2), intermediate gear (29) is enclosed within on the counter gear shaft (30) that is fixed on the chassis, is provided with a polygon cavity (31) in the center of intermediate gear (29).Polygon cavity (31) can adopt hexagon cavity and " L " type inner-hexagon spanner supporting, and under the situation of not having electricity, available " L " type inner-hexagon spanner carries out artificial lifting.On the outer wall of overcoat, be provided with infrared receiver (32), in use, also be furnished with an infrared remote controller of pairing with it, make the utility model jack have the function of wireless remote control, easy to use, simple to operate.Be provided with magnetic patch (34) in the outer wall lower end of outer tube (24), magnetic patch can be with the outer tube up-and-down movement, be respectively equipped with magnet contactor (35) on the shell (4) that faces toward at magnetic patch (34) path of motion two ends, when magnetic patch moves to the magnet contactor place, the break-make of may command magnet contactor is avoided lifting screw cover group (1) to rise to the end or is reduced to the bottom surface and block and burn electrical motor.Be provided with surface bearing (37) between chassis gear (2) and the base (3), increase the area of contact of chassis gear and base and the alerting ability that lifting screw cover group is rotated.
As seen from Figure 2, the screw rod (13) in the lifting screw cover group (1) and interior screwed pipe (14) negative thread in addition are connected, and interior screwed pipe (14) and outer screwed pipe (15) negative thread in addition are connected, and ferrule sleeve (16) and outer screwed pipe (15) negative thread in addition are connected.The top end diameter of screw rod (13) is greater than the screw mandrel diameter of its underpart, the internal thread diameter of interior screwed pipe (14) bottom is less than the bore on its top, the negative thread of outer screwed pipe (15) bottom cooperates with interior screwed pipe (14) outside thread, the negative thread of outer screwed pipe (15) upper end cooperates with the outside thread of ferrule sleeve (16), outer screwed pipe (15) central tube internal diameter is greater than ferrule sleeve (16) external thread diameter, and ferrule sleeve (16) tube internal diameter is greater than interior screwed pipe (14) external thread diameter.Can connect with one another closely compactly in the lifting screw cover group of this jack of contraction state and to pack up, and in use, can rise again with connecting with one another closely.The top of screw rod (13) is provided with a groove (17), inside pipe wall in interior screwed pipe (14) upper end is provided with ring groove (18), on the tube wall of ring groove (18) below, be provided with two slotted holes (19), between two slotted holes (19), be provided with bayonet lock (20), bayonet lock (20) is longer than the internal diameter of outer screwed pipe (15) bottom, in ring groove (18), be provided with snap ring (21), between snap ring (21) and bayonet lock (20), be provided with spring (22).When screw rod and interior screwed pipe are contracted in a time-out, bayonet lock just drops in the groove of screw tip, make screw rod drive by bayonet lock in the screwed pipe rotation, outer screwed pipe is packed up, and when rising, bayonet lock can also limit the lower end of outer screwed pipe and the upper end disengaging of interior screwed pipe.Screwed pipe (15) outer wall is provided with a directed groove A(23 outside), be with outer tube (24) outside outside the screwed pipe (15), on the inwall of outer tube (24), be provided with directed projection (25), projection can make outer tube along groove A directed movement up and down, on the outer wall of outer tube (24), be provided with orientation notch B(26), two ends at the outer wall of outer tube (24) are respectively equipped with spacing card (27), screwed pipe (15) upper end outer wall is provided with lower limit card (28), the lower limit card (36) of screwed pipe (15) outside being provided with on the lower end outer wall of interior screwed pipe (14) outside.Be provided with locating piece (33) on the through-hole wall of laying lifting screw cover group (1) on the shell (4), locating piece (33) drops on the orientation notch B(26 on outer tube (24) outer wall) in, control outer tube (24) can only up-and-down movement, can left rotation and right rotation.
Consult Fig. 3, on pinion carrier (9), be provided with three compensating-gear shafts (10), there are three planetary wheels (8) to be enclosed within on the compensating-gear shaft (10), three planetary wheels (8) all with motor reel on driven wheel (12) external toothing, go up engagement in the inner gear with overcoat (7), make stressed being evenly distributed in the speed-changing mechanism, it is more reliable and more stable to turn round.Driven wheel and planetary wheel to different-diameter make up, and can change the rotating speed of speed-changing mechanism easily, and can not change the size of other parts.Two variable-speed units or a plurality of variable-speed unit are arranged in overcoat (7), can realize multi-change speed, this is convenient to select the electrical motor of multiple different capacity, different rotating speeds.
Claims (10)
1, a kind of jack, comprise lifting screw cover group (1), chassis gear (2), base (3), shell (4) and electrical motor (5), it is characterized in that described electrical motor (5) is fixed on the overcoat (7) of compound planet gear (6), overcoat (7) is fixed on the shell (4), the inwall of overcoat (7) is provided with inner gear, in overcoat (7), be provided with the variable-speed unit that constitutes by planetary wheel (8) and pinion carrier (9), on pinion carrier (9), be provided with compensating-gear shaft (10), in the center of pinion carrier (9) sun gear (11) is arranged, planetary wheel (8) is enclosed within on the compensating-gear shaft (10), driven wheel (12) engagement on planetary wheel (8) and the motor reel, go up the inner gear engagement with overcoat (7), sun gear (11) and chassis gear (2) engagement.
2, jack according to claim 1, it is characterized in that in the described lifting screw cover group (1) screw rod (13) and interior screwed pipe (14) in addition negative thread be connected, interior screwed pipe (14) and outer screwed pipe (15) negative thread in addition are connected, and ferrule sleeve (16) and outer screwed pipe (15) negative thread in addition are connected.
3, jack according to claim 2, it is characterized in that the screw mandrel diameter of the top end diameter of the screw rod (13) in the described lifting screw cover group (1) greater than its underpart, the internal thread diameter of interior screwed pipe (14) bottom is less than the bore on its top, the negative thread of outer screwed pipe (15) bottom cooperates with interior screwed pipe (14) outside thread, the negative thread of outer screwed pipe (15) upper end cooperates with the outside thread of ferrule sleeve (16), outer screwed pipe (15) central tube internal diameter is greater than ferrule sleeve (16) external thread diameter, and ferrule sleeve (16) tube internal diameter is greater than interior screwed pipe (14) external thread diameter.
4, jack according to claim 3, the top that it is characterized in that the screw rod (13) in the described lifting screw cover group (1) is provided with a groove (17), inside pipe wall in interior screwed pipe (14) upper end is provided with ring groove (18), on the tube wall of ring groove (18) below, be provided with two slotted holes (19), between two slotted holes (19), be provided with bayonet lock (20), bayonet lock (20) is longer than the internal diameter of outer screwed pipe (15) bottom, in ring groove (18), be provided with snap ring (21), between snap ring (21) and bayonet lock (20), be provided with spring (22).
5, according to claim 1,2,3 or 4 described jacks, it is characterized in that being provided with on screwed pipe outside described (15) outer wall a directed groove A(23), be with outer tube (24) outside outside the screwed pipe (15), on the inwall of outer tube (24), be provided with directed projection (25), on the outer wall of outer tube (24), be provided with orientation notch B(26), two ends at the outer wall of outer tube (24) are respectively equipped with spacing card (27), screwed pipe (15) upper end outer wall is provided with lower limit card (28), the lower limit card (36) of screwed pipe (15) outside being provided with on the lower end outer wall of interior screwed pipe (14) outside.
6, according to claim 1,2,3 or 4 described jacks, it is characterized in that on described pinion carrier (9), being provided with three compensating-gear shafts (10), there are three planetary wheels (8) to be enclosed within on the compensating-gear shaft (10), three planetary wheels (8) all with motor reel on driven wheel (12) external toothing, go up engagement in the inner gear with overcoat (9).
7,, it is characterized in that two variable-speed units are arranged in the described overcoat (7) according to claim 1,2,3 or 4 described jacks.
8, according to claim 1,2,3 or 4 described jacks, it is characterized in that also being provided with intermediate gear (29) between described planet axis gear (8) and the chassis gear (2), intermediate gear (29) is enclosed within on the counter gear shaft (30) that is fixed on the chassis, is provided with a polygon cavity (31) in the center of intermediate gear (29).
9,, it is characterized in that on the outer wall of described overcoat, being provided with infrared receiver (32) according to claim 1,2,3 or 4 described jacks.
10,, it is characterized in that between described chassis gear (2) and base (3), being provided with surface bearing (37) according to claim 1,2,3 or 4 described jacks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248081 CN2214405Y (en) | 1994-12-15 | 1994-12-15 | Jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248081 CN2214405Y (en) | 1994-12-15 | 1994-12-15 | Jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214405Y true CN2214405Y (en) | 1995-12-06 |
Family
ID=33853120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94248081 Expired - Fee Related CN2214405Y (en) | 1994-12-15 | 1994-12-15 | Jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214405Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787859A (en) * | 2012-08-08 | 2012-11-21 | 山西潞安集团司马煤业有限公司 | Hydraulic support with protection function |
| CN102979874A (en) * | 2012-12-20 | 2013-03-20 | 谢永喜 | Variable transmission device and variable labor-saving jack with same |
| CN103613044A (en) * | 2013-12-17 | 2014-03-05 | 哈尔滨工业大学 | Multistage screw drive large-stroke automatic underprop tool |
| CN105776054A (en) * | 2016-05-10 | 2016-07-20 | 夏先斌 | Automobile micro electric jack |
| CN109019393A (en) * | 2018-08-15 | 2018-12-18 | 杭州恒宏机械有限公司 | Variable-ratio motor-driven jack and its working method |
-
1994
- 1994-12-15 CN CN 94248081 patent/CN2214405Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787859A (en) * | 2012-08-08 | 2012-11-21 | 山西潞安集团司马煤业有限公司 | Hydraulic support with protection function |
| CN102979874A (en) * | 2012-12-20 | 2013-03-20 | 谢永喜 | Variable transmission device and variable labor-saving jack with same |
| CN102979874B (en) * | 2012-12-20 | 2016-02-10 | 谢永喜 | Variable speed drive and the speed changing force-saving jack with above-mentioned variable speed drive |
| CN103613044A (en) * | 2013-12-17 | 2014-03-05 | 哈尔滨工业大学 | Multistage screw drive large-stroke automatic underprop tool |
| CN103613044B (en) * | 2013-12-17 | 2015-10-28 | 哈尔滨工业大学 | A kind of Multistage screw drive large-stroke automatic underprop tool |
| CN105776054A (en) * | 2016-05-10 | 2016-07-20 | 夏先斌 | Automobile micro electric jack |
| CN109019393A (en) * | 2018-08-15 | 2018-12-18 | 杭州恒宏机械有限公司 | Variable-ratio motor-driven jack and its working method |
| CN109019393B (en) * | 2018-08-15 | 2020-03-31 | 杭州恒宏机械有限公司 | Variable-speed electric jack and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 20010320 Decision number of declaring invalidation: 3070 |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |