CN203006833U - Manual variable-speed jack - Google Patents
Manual variable-speed jack Download PDFInfo
- Publication number
- CN203006833U CN203006833U CN 201220708903 CN201220708903U CN203006833U CN 203006833 U CN203006833 U CN 203006833U CN 201220708903 CN201220708903 CN 201220708903 CN 201220708903 U CN201220708903 U CN 201220708903U CN 203006833 U CN203006833 U CN 203006833U
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- CN
- China
- Prior art keywords
- body assembly
- connecting portion
- gearbox body
- screw mandrel
- rocker shaft
- Prior art date
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Abstract
The utility model provides a manual variable-speed jack, belongs to the operation technical field and solves the problem of tedious operations of prior variable-speed jacks. The manual variable-speed jack comprises a diamond lifting frame, a jack head seat, a base and a screw rod. a nut and a sleeve are sleeved on the screw rod, the nut is arranged at one end of the diamond lifting frame, and the sleeve is arranged at the other end of the diamond lifting frame; and a gear box component is fixed on the sleeve, and a planetary gear component and rockshaft are arranged in the gear box component. According to the manual variable-speed jack, the rockshaft is pulled backwards and rotated continuously during object lifting, speed is reduced and effort is saved for object lifting, and the rockshaft is directly connected with the screw rod in other states, and accordingly, the operation is convenient. Parts of the manual variable-speed jack are arranged in the gear box component, so that the structure is compact, and the lubrication environment at the transmission connection position is guaranteed.
Description
Technical field
The utility model belongs to the operation technique field, relates to a kind of jack, particularly a kind of hand gear jack.
Background technology
Jack is that a kind of the top with rigidity lifted part as equipment, the light little weight-lifting equipment of jacking weight in stroke by top bracket or bottom claw.Can be divided into three kinds of rack-jack, lifting screw and hydraulic jacks by architectural feature.
Pertinent literature such as Chinese patent literature about lifting screw disclose a kind of speed changing force-saving simple jack [application number 200710116269.6; Publication number CN101195466], comprise rhombus crane, top headstock, base, screw mandrel, the crane left end is provided with nut, and right-hand member is provided with sleeve, and screw mandrel two ends are enclosed within respectively in nut and cover bucket, and the crane right-hand member also is provided with the force-saving speed-changer; The force-saving speed-changer comprises a pair of intermeshing gear, is about to input rotational force and is applied on different gears, realizes different speed, and reaches the labour-saving purpose.
And for example Chinese patent literature discloses a kind of chain shifting jack [application number 200920185698.3; Publication number CN201473263U], be positioned with driving gear, driven gear on brace panel and coordinate the driving chain of transmission with driving gear, driven gear, driving gear is connected with screw rod.This jack is also that the input rotational force is applied on different gears, realizes different speed, and reaches the labour-saving purpose.
Eventually the above, existing shifting jack must switch crank between two gears back and forth in order to realize gear, obviously increase maneuvering sequence, namely exists the loaded down with trivial details problem of handling.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of hand gear jack, and this jack will solve the loaded down with trivial details problem of handling.
The purpose of this utility model can realize by following technical proposal: a kind of hand gear jack, comprise rhombus crane, top headstock, base and screw mandrel, be arranged with nut and sleeve on screw mandrel, nut is located on an end of rhombus crane, and sleeve is located on the other end of rhombus crane; It is characterized in that, be fixed with the gearbox body assembly on described sleeve, be provided with planetary gear set and rocker shaft in described gearbox body assembly, the inner gear of planetary gear set is fixed on the gearbox body assembly; One end of described rocker shaft passes the sun gear of planetary gear set and passes the gearbox body assembly, the other end of described rocker shaft is non-circular connecting portion, described screw mandrel penetrates the gearbox body assembly and has the connecting bore one that can be connected with non-circular connecting portion, and the pinion carrier of described planetary gear set is captiveed joint with screw mandrel; Has the connecting bore two that can be connected with non-circular connecting portion on described sun gear.
When the non-circular connecting portion of the rocker shaft of this hand gear jack was plugged on screw mandrel connecting bore one place, rocker shaft directly took the screw mandrel constant speed to and rotates.By pulling rocker shaft to make the rocker shaft axial motion, and then non-circular connecting portion is connected with connecting bore two, rocker shaft takes sun gear to and rotates, and drives successively satellite gear, pinion carrier and screw mandrel and rotate, and realizes deceleration transmission, realizes simultaneously laborsaving purpose.
In above-mentioned hand gear jack, be provided with the spring that rocker shaft is had all the time be connected with screw mandrel trend between described rocker shaft and gearbox body assembly.
In above-mentioned hand gear jack, the cross-sectional plane of the other end of described rocker shaft is equilateral polygon or is male splines.
In above-mentioned hand gear jack, described non-circular connecting portion comprises the connecting portion one that is connected with connecting bore one and the connecting portion two that is connected with connecting bore two, and the cross-sectional diameter of described connecting portion two is greater than the cross-sectional diameter of connecting portion one.
In above-mentioned hand gear jack, be provided with bearing between described screw mandrel and gearbox body assembly.
In above-mentioned hand gear jack, described gearbox body assembly comprises left box body and right case, and described left box body is captiveed joint by bolt and nut with right case.
In above-mentioned hand gear jack, described gearbox body assembly comprises the casing with cylindric cavity and the cover plate that is arranged on the cavity opening part, and described cover plate is fixed on casing; Described casing is fixed on sleeve.
In above-mentioned hand gear jack, described inner gear and casing interference fit or be connected as a single entity.
Compared with prior art, this hand gear jack pulls back rocker shaft when the lifting object and continues and rotates, and realizes slowing down and laborsaving lifting object, and all the other states all directly are connected with screw mandrel; Has advantages of thus control comfort.
The parts of this hand gear jack all are arranged in the gearbox body assembly, therefore have compact conformation and the lubricated environment at the place that can guarantee to be in transmission connection.
Description of drawings
Fig. 1 is the structural representation of this hand gear jack.
Fig. 2 is the variable part sectional structure schematic diagram of this hand gear jack.
In figure, 1, the rhombus crane; 2, top headstock; 3, base; 4, screw mandrel; 5, gearbox body assembly; 5a, casing; 5b, cover plate; 6, rocker shaft; 7, planetary gear set; 7a, inner gear; 7b, pinion carrier; 7c, sun gear; 7d, satellite gear; 8, sleeve; 9, non-circular connecting portion; 9a, connecting portion one; 9b, connecting portion two; 10, connecting bore one; 11, connecting bore two; 12, spring; 13, bearing.
The specific embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, this hand gear jack comprises rhombus crane 1, top headstock 2, base 3, screw mandrel 4, gearbox body assembly 5, rocker shaft 6 and planetary gear set 7.
Specifically, as shown in Figure 1, be arranged with nut and sleeve 8 nuts on screw mandrel 4 and be located on an end of rhombus crane 1, sleeve 8 is located on the other end of rhombus crane 1; Realize rising or the decline of top headstock 2 by rotary screw 4.
As shown in Figure 2, gearbox body assembly 5 comprises the casing 5a with cylindric cavity and the cover plate 5b that is arranged on the cavity opening part, and casing 5a is fixed on sleeve 8.The cavity opening part is provided with annular recessed shoulder, and cover plate 5b is placed on the bottom surface of annular recessed shoulder, is provided with jump ring outside cover plate 5b, and jump ring is positioned on the side of annular recessed shoulder, and cover plate 5b is fixed on casing 5a thus.For being fixed on, cover plate 5b can also adopt cover plate 5b to be bolted on the upper replacement of casing 5a on casing 5a.
According to actual conditions, the structure of gearbox body assembly 5 can adopt following scheme to replace, and gearbox body assembly 5 comprises left box body 5a and right case 5a, and left box body 5a is captiveed joint by bolt and nut with right case 5a.
As shown in Figure 2, screw mandrel 4 penetrates in the casing 5a cavity of gearbox body assembly 5.
As shown in Figure 2, planetary gear set 7 and rocker shaft 6 all are arranged in the casing 5a cavity of gearbox body assembly 5.The inner gear 7a of planetary gear set 7 is fixed on gearbox body assembly 5; Inner gear 7a and casing 5a interference fit or be connected as a single entity.The pinion carrier 7b of planetary gear set 7 is captiveed joint by bolt and nut with screw mandrel 4; Or the side plate of pinion carrier 7b and screw mandrel 4 are connected as a single entity.For fear of rocker shaft 6 axial motions and then promotion sun gear 7c axial motion, pinion carrier 7b is with sun gear 7c axial location.
One end of rocker shaft 6 passes the sun gear 7c of planetary gear set 7 and passes the cover plate 5b of gearbox body assembly 5.The other end of rocker shaft 6 is non-circular connecting portion 9, and screw mandrel 4 penetrates an end of gearbox body assembly 5 and has the connecting bore 1 that can be connected with above-mentioned non-circular connecting portion 9.Has the connecting bore 2 11 that can be connected with non-circular connecting portion 9 on sun gear 7c.
Be provided with the spring 12 that rocker shaft 6 is had all the time be connected with screw mandrel 4 trend between rocker shaft 6 and gearbox body assembly 5.Be in the state time less that runs slowly when using due to this jack, therefore spring 12 be set and avoid the natural play of rocker shaft 6 to be connected with sun gear 7c, also can increase the feel that rocker shaft 6 axially pulls simultaneously.
For annexation is more easily processed and more easily formed to non-circular connecting portion 9, connecting bore 1 and connecting bore 2 11, the cross-sectional plane of the other end of rocker shaft 6 is equilateral polygon or is male splines.
Non-circular connecting portion 9 comprises connecting portion one 9a that is connected with connecting bore 1 and connecting portion two 9b that are connected with connecting bore 2 11, and the cross-sectional diameter of connecting portion two 9b is greater than the cross-sectional diameter of connecting portion one 9a.After connecting portion one 9a inserted connecting bore 1, connecting portion two 9b and screw mandrel 4 leant, and were used for the axial motion stroke of restriction rocker shaft 6.Simultaneously, above-mentioned spring 12 can directly be resisted against on connecting portion two 9b, makes more compact structure.
In order to improve screw mandrel 4 relatively and the stability of gearbox body assembly 5 operations and reduction noise, be provided with bearing 13 between screw mandrel 4 and gearbox body assembly 5.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (8)
1. hand gear jack, comprise rhombus crane (1), top headstock (2), base (3) and screw mandrel (4), be arranged with nut and sleeve (8) on screw mandrel (4), nut is located on an end of rhombus crane (1), and sleeve (8) is located on the other end of rhombus crane (1); It is characterized in that, be fixed with gearbox body assembly (5) on described sleeve (8), be provided with planetary gear set (7) and rocker shaft (6) in described gearbox body assembly (5), the inner gear (7a) of planetary gear set (7) is fixed on gearbox body assembly (5); One end of described rocker shaft (6) passes the sun gear (7c) of planetary gear set (7) and passes gearbox body assembly (5), the other end of described rocker shaft (6) is non-circular connecting portion (9), described screw mandrel (4) penetrates gearbox body assembly (5) and has the connecting bore one (10) that can be connected with non-circular connecting portion (9), and the pinion carrier (7b) of described planetary gear set (7) is captiveed joint with screw mandrel (4); Has the connecting bore two (11) that can be connected with non-circular connecting portion (9) on described sun gear (7c).
2. hand gear jack according to claim 1, is characterized in that, is provided with the spring (12) that rocker shaft (6) is had all the time be connected with screw mandrel (4) trend between described rocker shaft (6) and gearbox body assembly (5).
3. hand gear jack according to claim 1, is characterized in that, the cross-sectional plane of the other end of described rocker shaft (6) is equilateral polygon or is male splines.
4. hand gear jack according to claim 3, it is characterized in that, described non-circular connecting portion (9) comprises the connecting portion one (9a) that is connected with connecting bore one (10) and the connecting portion two (9b) that is connected with connecting bore two (11), and the cross-sectional diameter of described connecting portion two (9b) is greater than the cross-sectional diameter of connecting portion one (9a).
5. according to claim 1 and 2 or 3 or 4 described hand gear jacks, is characterized in that, is provided with bearing (13) between described screw mandrel (4) and gearbox body assembly (5).
6. according to claim 1 and 2 or 3 or 4 described hand gear jacks, it is characterized in that, described gearbox body assembly (5) comprises left box body (5a) and right case (5a), and described left box body (5a) is captiveed joint by bolt and nut with right case (5a).
7. according to claim 1 and 2 or 3 or 4 described hand gear jacks, it is characterized in that, described gearbox body assembly (5) comprises the casing (5a) with cylindric cavity and the cover plate (5b) that is arranged on the cavity opening part, and described cover plate (5b) is fixed on casing (5a); Described casing (5a) is fixed on sleeve (8).
8. hand gear jack according to claim 7, is characterized in that, described inner gear (7a) and casing (5a) interference fit or be connected as a single entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708903 CN203006833U (en) | 2012-12-20 | 2012-12-20 | Manual variable-speed jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220708903 CN203006833U (en) | 2012-12-20 | 2012-12-20 | Manual variable-speed jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203006833U true CN203006833U (en) | 2013-06-19 |
Family
ID=48598448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220708903 Expired - Fee Related CN203006833U (en) | 2012-12-20 | 2012-12-20 | Manual variable-speed jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203006833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595448A (en) * | 2013-10-30 | 2015-05-06 | 北京精密机电控制设备研究所 | Novel transmission mechanism |
-
2012
- 2012-12-20 CN CN 201220708903 patent/CN203006833U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595448A (en) * | 2013-10-30 | 2015-05-06 | 北京精密机电控制设备研究所 | Novel transmission mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201220 |