CN110304573B - Adjustable jack - Google Patents
Adjustable jack Download PDFInfo
- Publication number
- CN110304573B CN110304573B CN201910698500.XA CN201910698500A CN110304573B CN 110304573 B CN110304573 B CN 110304573B CN 201910698500 A CN201910698500 A CN 201910698500A CN 110304573 B CN110304573 B CN 110304573B
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- Prior art keywords
- base
- arms
- supporting
- sleeve body
- pulley blocks
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- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses an adjustable jack which comprises a lower base, an upper base, a front connecting seat, a rear connecting seat, two upper supporting arms, two lower supporting arms, two connecting arms, a traction mechanism, two connecting mechanisms and an adjustable supporting mechanism, wherein two ends of the lower supporting arm are respectively hinged with the base and the front connecting seat, two ends of the other lower supporting arm are respectively hinged with the base and the rear connecting seat, two ends of the upper supporting arm are respectively hinged with the upper base and the front connecting seat, two ends of the other upper supporting arm are respectively hinged with the upper base and the rear connecting seat, rotatable connecting arms are respectively arranged on the lower supporting arms in a crossing manner, the upper ends of the connecting arms are respectively provided with a traction mechanism for drawing the front connecting seat and the rear connecting seat, and the lower ends of the connecting arms are respectively connected with the lower base through the connecting mechanisms.
Description
[ field of technology ]
The invention relates to the technical field of jacks, in particular to the technical field of adjustable jacks.
[ background Art ]
The jack is a light and small lifting device which uses a rigid jacking piece as a working device and jacks a heavy object in a stroke through a top bracket or a bottom supporting claw. The jack is mainly used for departments such as factories and mines, transportation and the like to repair vehicles and work such as other lifting and supporting. The structure is light, firm, flexible and reliable, and can be carried and operated by one person.
The existing scissor jack is used for lifting and descending the height by adjusting the bottom edges of the upper isosceles triangle and the lower isosceles triangle through a screw rod and a nut. Just like a tool ladder in normal life, the smaller the included angle between the two arms of the ladder is, the higher the ladder is, and the larger the included angle between the two arms of the ladder is, the lower the ladder is. In the use process, the jacking and dropping speeds are quite slow, so that the work efficiency is greatly affected by the slow rising and dropping of the scissor jack when the scissor jack is not contacted with a heavy object.
When the lifted object is large in ground clearance, the lifting height of the jack is fixed, so that a plurality of cushion blocks are required to be searched for being matched for use, the lifted object can be guaranteed, and the lifting device is inconvenient to use.
[ invention ]
The invention aims to solve the problems in the prior art and provides an adjustable jack which can improve working efficiency, is convenient to use and saves labor.
In order to achieve the above object, the invention provides an adjustable jack, which comprises a lower base, an upper base, a front connecting seat, a rear connecting seat, two upper supporting arms, two lower supporting arms, two connecting arms, a traction mechanism, two connecting mechanisms and an adjustable supporting mechanism, wherein two ends of the lower supporting arm are respectively hinged with the base and the front connecting seat, two ends of the other lower supporting arm are respectively hinged with the base and the rear connecting seat, two ends of the one upper supporting arm are respectively hinged with the upper base and the front connecting seat, two ends of the other upper supporting arm are respectively hinged with the upper base and the rear connecting seat, the upper ends of the lower supporting arms are respectively provided with rotatable connecting arms, the upper ends of the connecting arms are respectively provided with traction mechanisms for traction the front connecting seat and the rear connecting seat, the lower ends of the connecting arms are respectively connected with the lower base through the connecting mechanisms, the traction mechanism is a traction mechanism with a pulley block, the upper end of the upper base is provided with a detachable adjustable supporting mechanism, the adjustable supporting mechanism comprises an outer sleeve body and a supporting column, the outer sleeve is provided with a threaded supporting column, and the upper end of the supporting column is provided with a threaded supporting column.
Preferably, the traction mechanism comprises a shell, two movable pulley blocks, two fixed pulley blocks, a rotating shaft, two reels and a driving mechanism, wherein the rotating shaft is arranged on the shell, the reels are arranged in the shell, the fixed pulley blocks are arranged at the front end and the rear end of the shell, the movable pulley blocks are arranged at the inner sides of the front connecting seat and the rear connecting seat, the movable pulley blocks and the fixed pulley blocks which correspond to each other in front and rear form a pulley block, steel wire ropes are arranged on the pulley blocks, and the winding ends of the steel wire ropes penetrate through the side walls of the shell and are fixedly connected with the corresponding reels, and the driving mechanism for driving the rotating shaft to rotate is arranged on the shell.
Preferably, the driving mechanism comprises a crank, a shaft body, a driving gear and a driven gear, wherein the crank is arranged at the outer end of the shaft body, the driving gear is arranged at the inner end of the shaft body, and the driving gear is meshed and connected with the driven gear arranged on the rotating shaft.
Preferably, the gear ratio of the driving gear to the driven gear is: 1:5.
Preferably, the connecting mechanism comprises a sliding rail, a sliding seat and a fixing mechanism, wherein the sliding rail is arranged on the lower base, the sliding seat which can slide is matched and installed on the sliding rail, and the fixing mechanism which is connected with the sliding rail in a plugging mode is arranged on the sliding seat.
Preferably, the fixing mechanism comprises a latch body, a sleeve body, a first spring, a second spring, a bulge, a screw rod, a nut and a retainer ring, wherein the sleeve body is arranged on the sliding seat, the latch body is arranged in the sleeve body, the retainer ring is arranged in the upper end of the sleeve body, the latch body is provided with the bulge in the sleeve body, the first spring is arranged on the latch body between the bulge and the retainer ring, the screw rod is arranged at the upper end of the latch body, the nut is arranged on the screw rod, and the second springs with two ends respectively abutting against the sleeve body and the nut are arranged on the latch body.
Preferably, the lower end of the latch body is an inclined plane, and the upper end of the sliding rail is provided with splicing grooves which are uniformly distributed and matched with the insertion end of the latch body.
Preferably, the upper end of the upper base is provided with a groove matched with the outer sleeve body.
The invention has the beneficial effects that: according to the invention, the front connecting seat and the rear connecting seat are pulled to move in opposite directions through the pulling mechanism, and the pulley block and the gear transmission of the pulling mechanism are used for replacing the traditional screw rod and nut matching; the adjustable supporting mechanism can be used for making up the height difference between a jacked object and the jack, and compared with the prior art, the adjustable supporting mechanism can improve the working efficiency, is convenient to use and saves labor.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of an adjustable jack according to the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
FIG. 3 is a partial top view of the pulling mechanism;
fig. 4 is a schematic structural view of the connection mechanism.
In the figure: 1-lower base, 2-upper base, 3-front connecting base, 4-rear connecting base, 5-upper supporting arm, 6-lower supporting arm, 7-connecting arm, 8-pulling mechanism, 9-connecting mechanism, 10-adjustable supporting mechanism, 11-groove, 81-shell, 82-movable pulley block, 83-fixed pulley block, 84-wire rope, 85-rotating shaft, 86-reel, 87-driving mechanism, 871-crank, 872-shaft body, 873-driving gear, 874-driven gear, 91-sliding rail, 92-sliding seat, 93-fixing mechanism, 94-inserting groove, 931-inserting pin body, 932-sleeve body, 933-first spring, 934-second spring, 935-protrusion, 936-screw, 937-nut, 938-retainer ring, 101-outer sleeve body, 102-supporting column and 103-supporting seat.
[ detailed description ] of the invention
Referring to fig. 1, 2, 3 and 4, the adjustable jack of the present invention comprises a lower base 1, an upper base 2, a front connecting seat 3, a rear connecting seat 4, two upper supporting arms 5, two lower supporting arms 6, two connecting arms 7, a pulling mechanism 8, two connecting mechanisms 9 and an adjustable supporting mechanism 10, wherein two ends of the lower supporting arm 6 are respectively hinged with the base 1 and the front connecting seat 3, two ends of the other lower supporting arm 6 are respectively hinged with the base 1 and the rear connecting seat 4, two ends of the upper supporting arm 5 are respectively hinged with the upper base 2 and the front connecting seat 3, two ends of the other upper supporting arm 5 are respectively hinged with the upper base 2 and the rear connecting seat 4, rotatable connecting arms 7 are respectively arranged on the lower supporting arms 6 in a crossing manner, the upper ends of the connecting arms 7 are provided with pulling mechanisms 8 for pulling the front connecting seat 3 and the rear connecting seat 4, the lower ends of the connecting arms 7 are all connected with the lower base 1 through the connecting mechanism 9, the pulling mechanism 8 is a pulling mechanism with pulley blocks, the upper end of the upper base 2 is provided with a detachable adjustable supporting mechanism 10, the adjustable supporting mechanism 10 comprises an outer sleeve body 101 and a supporting column 102, the inner side of the outer sleeve body 101 is provided with a supporting column 102 in threaded connection, the upper end of the supporting column 102 is provided with a support 103, the pulling mechanism 8 comprises a shell 81, two movable pulley blocks 82, two fixed pulley blocks 83, a rotating shaft 85, two reels 86 and a driving mechanism 87, the shell 81 is provided with the rotating shaft 85, the rotating shaft 85 is provided with the reels 86 in the shell 81, the front end and the rear end of the shell 81 are respectively provided with the fixed pulley blocks 83, the inner sides of the front connecting seat 3 and the rear connecting seat 4 are respectively provided with the movable pulley blocks 82, the pulley block is formed by the movable pulley block 82 and the fixed pulley block 83 which are corresponding in front and back, the pulley blocks are respectively provided with a steel wire rope 84, the winding end of the steel wire rope 84 penetrates through the side wall of the shell 81 to be fixedly connected with the corresponding reel 86, the shell 81 is provided with a driving mechanism 87 for driving the rotating shaft 85 to rotate, the driving mechanism 87 comprises a crank 871, a shaft body 872, a driving gear 873 and a driven gear 874, the outer end of the shaft body 872 is provided with the crank 871, the inner end of the shaft body 872 is provided with the driving gear 873, the driving gear 873 is meshed with the driven gear 874 arranged on the rotating shaft 85, and the gear ratio of the driving gear 873 to the driven gear 874 is as follows: 1:5, coupling mechanism 9 includes slide rail 91, slide 92 and fixed establishment 93, slide rail 91 establishes on lower base 1, the cooperation is installed slidable slide 92 on the slide rail 91, be equipped with the fixed establishment 93 of being pegged graft with slide rail 91 on the slide 92, fixed establishment 93 includes bolt 931, cover 932, first spring 933, second spring 934, arch 935, screw 936, nut 937 and retaining ring 938, cover 932 establishes on slide 92, be equipped with bolt 931 in the cover 932, be equipped with retaining ring 938 in the upper end of cover 932, be equipped with protruding 935 in cover 932, be equipped with first spring 933 on the bolt 931 between protruding 935 and the retaining ring 938, the upper end of bolt 931 is equipped with the screw rod 937 on the screw rod 936, be equipped with both ends respectively in cover 931 and nut 931 7's second spring 934, the lower extreme of bolt 931 is the inclined plane, be equipped with the even and be equipped with the upper end of cover 931 and be equipped with the recess of cover 931 with the upper end of cover 91 and be equipped with the matched with on the base 11 of cover that the cover is equipped with the groove of the upper end of cover 91.
The working process of the invention comprises the following steps:
in the working process of the adjustable jack, the crank 871 is rotated clockwise to drive the shaft body 872 to rotate, the shaft body 872 is matched with the driving gear 873 and the driven gear 874 to drive the rotation shaft 85 to rotate, the rotation shaft 85 drives the reel 86 to wind the steel wire rope 84, the steel wire rope 84 pulls the front connecting seat 3 and the rear connecting seat 4 to move oppositely through the movable pulley block 82, the upper ends of the two lower supporting arms 6 are driven by the front connecting seat 3 and the rear connecting seat 4 to move close, and the lower ends of the two upper supporting arms 5 are driven by the front connecting seat 3 and the rear connecting seat 4 to move close to realize the rising of the upper base 2.
When the upper ends of the two lower supporting arms 6 are moved close, the two lower supporting arms 6 respectively drive the two connecting arms 7 to move, the two connecting arms 7 respectively pull the two sliding seats 92 to move towards each other, the sliding seats 92 drive the fixing mechanism 93 to move, when the plug pin body 931 corresponds to the plug slot 94, under the action of the first spring 933, the first spring 933 drives the plug pin body 931 to insert into the plug slot 94 through the protrusion 935, and because the lower end of the plug pin body 931 is an inclined plane, when the two sliding seats 92 move towards each other, the rear end of the plug slot 94 forces the plug pin body 931 to move upwards and compresses the first spring 933 through the protrusion 935, so that the two sliding seats 92 cannot be interfered to move towards each other, when the plug pin body 931 is inserted into the plug slot 94, the two sliding seats 92 reversely move, and at the moment, the two sliding seats 92 cannot reversely move, and the support and fix the lower supporting arm 6 through the connecting arms 7, so that the current height position of the upper base 2 is kept unchanged.
When the upper base 2 needs to descend, the nut 937 is rotated clockwise to move downwards to compress the second spring 934, so that the acting force of the second spring 934 on the nut 937 is larger than the acting force of the first spring 933 on the boss 935, then the ascending operation of the upper base 2 is performed, when the latch body 931 is not contacted with the front end of the inserting groove 94, the nut 937 pulls the latch body 931 to move upwards under the action of the second spring 934 through the screw 936, the latch body 931 moves out of the inserting groove 94, then the crank 871 is released, and at the moment, the upper base 2 descends by itself under the action of gravity.
In use, the adjustable support mechanism 10 is rotated to extend the support post 102 from the outer housing 101 and then the outer housing 101 is inserted into the recess 11.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (5)
1. An adjustable jack, its characterized in that: comprises a lower base (1), an upper base (2), a front connecting base (3), a rear connecting base (4), two upper supporting arms (5), two lower supporting arms (6), two connecting arms (7), a traction mechanism (8), two connecting mechanisms (9) and an adjustable supporting mechanism (10), wherein one of the two ends of the lower supporting arms (6) is respectively hinged with the base (1) and the front connecting base (3), the other of the two ends of the lower supporting arms (6) is respectively hinged with the base (1) and the rear connecting base (4), one of the two ends of the upper supporting arms (5) is respectively hinged with the upper base (2) and the front connecting base (3), the other of the two ends of the upper supporting arms (5) is respectively hinged with the upper base (2) and the rear connecting base (4), the upper ends of the lower supporting arms (6) are respectively provided with rotatable connecting arms (7) in a crossed manner, the upper ends of the connecting arms (7) are respectively provided with traction mechanisms (8) for dragging the front connecting base (3) and the rear connecting base (4), the lower ends of the connecting arms (7) are respectively provided with the upper pulley blocks (2) and the upper ends (8) are respectively provided with the adjustable supporting mechanism (2), the adjustable supporting mechanism (10) comprises an outer sleeve body (101) and a supporting column (102), the supporting column (102) is arranged in the outer sleeve body (101) and is in threaded connection, a supporting seat (103) is arranged at the upper end of the supporting column (102), the pulling mechanism (8) comprises a shell (81), two movable pulley blocks (82), two fixed pulley blocks (83), a rotating shaft (85), two reels (86) and a driving mechanism (87), the shell (81) is provided with the rotating shaft (85), the rotating shaft (85) is provided with the reels (86) in the shell (81), the fixed pulley blocks (83) are arranged at the front end and the rear end of the shell (81), movable pulley blocks (82) are arranged at the inner sides of the front connecting seat (3) and the rear connecting seat (4), the movable pulley blocks (82) and the fixed pulley blocks (83) which correspond to each other are formed into a pulley block, the pulley blocks are respectively provided with a steel wire rope (84), the winding end of the steel wire rope (84) penetrates through the side wall of the shell (81) and is fixedly connected with the corresponding (86), the shell (81) is provided with the rotating shaft (8787), the driving mechanism (871) and the driving mechanism (872) rotates around the rotating shaft (87), the outer end of axis body (872) is equipped with crank (871), the inner of axis body (872) is equipped with driving gear (873), driving gear (873) is connected with driven gear (874) meshing of establishing on axis of rotation (85), coupling mechanism (9) are including slide rail (91), slide (92) and fixed establishment (93), slide rail (91) are established on lower base (1), slidable slide (92) are installed in the cooperation on slide rail (91), be equipped with on slide (92) with slide rail (91) grafting connection's fixed establishment (93).
2. An adjustable jack as claimed in claim 1 wherein: the gear ratio of the driving gear (873) to the driven gear (874) is as follows: 1:5.
3. An adjustable jack as claimed in claim 1 wherein: the fixing mechanism (93) comprises a latch body (931), a sleeve body (932), a first spring (933), a second spring (934), a boss (935), a screw rod (936), a nut (937) and a retainer ring (938), wherein the sleeve body (932) is arranged on the sliding seat (92), the latch body (931) is arranged in the sleeve body (932), a retainer ring (938) is arranged in the upper end of the sleeve body (932), the boss (935) is arranged in the sleeve body (932), the first spring (933) is arranged on the latch body (931) between the boss (935) and the retainer ring (938), the screw rod (936) is arranged at the upper end of the latch body (931), the nut (937) is arranged on the screw rod (936), and the second spring (934) with two ends respectively abutting against the sleeve body (932) and the nut (937) is arranged on the latch body (931).
4. An adjustable jack as claimed in claim 3 wherein: the lower extreme of bolt body (931) is the inclined plane, the upper end of slide rail (91) is equipped with evenly distributed and with bolt body (931) insert end matched with grafting groove (94).
5. An adjustable jack as claimed in any one of claims 1 to 4 wherein: the upper end of the upper base (2) is provided with a groove (11) matched with the outer sleeve body (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698500.XA CN110304573B (en) | 2019-07-31 | 2019-07-31 | Adjustable jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698500.XA CN110304573B (en) | 2019-07-31 | 2019-07-31 | Adjustable jack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110304573A CN110304573A (en) | 2019-10-08 |
| CN110304573B true CN110304573B (en) | 2024-01-30 |
Family
ID=68082487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910698500.XA Active CN110304573B (en) | 2019-07-31 | 2019-07-31 | Adjustable jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110304573B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029950A (en) * | 1999-02-04 | 2000-02-29 | Tai E International Patent & Law Office | Jack assembly |
| KR20030008459A (en) * | 2001-07-18 | 2003-01-29 | 한빛정공(주) | Electric jack for car |
| DE102004027215A1 (en) * | 2004-06-03 | 2005-12-29 | Flexlift-Hubgeräte GmbH | Lifting platform, with scissors structures, has a drive motor and nut on a rotating spindle linked to a scissors bar connection point and by struts to the scissors bars |
| CN108080847A (en) * | 2017-12-13 | 2018-05-29 | 新昌县绿松科技有限公司 | A kind of efficient solar water heater insulation barrel welder |
| CN108117000A (en) * | 2016-11-28 | 2018-06-05 | 张丽娟 | The dual-purpose jack of two stage speed change |
| CN210559086U (en) * | 2019-07-31 | 2020-05-19 | 嘉兴市金腾机械股份有限公司 | Adjustable jack |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6691983B2 (en) * | 2002-05-23 | 2004-02-17 | Harry H. Arzouman | Economical lifting device-jack stand |
-
2019
- 2019-07-31 CN CN201910698500.XA patent/CN110304573B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6029950A (en) * | 1999-02-04 | 2000-02-29 | Tai E International Patent & Law Office | Jack assembly |
| KR20030008459A (en) * | 2001-07-18 | 2003-01-29 | 한빛정공(주) | Electric jack for car |
| DE102004027215A1 (en) * | 2004-06-03 | 2005-12-29 | Flexlift-Hubgeräte GmbH | Lifting platform, with scissors structures, has a drive motor and nut on a rotating spindle linked to a scissors bar connection point and by struts to the scissors bars |
| CN108117000A (en) * | 2016-11-28 | 2018-06-05 | 张丽娟 | The dual-purpose jack of two stage speed change |
| CN108080847A (en) * | 2017-12-13 | 2018-05-29 | 新昌县绿松科技有限公司 | A kind of efficient solar water heater insulation barrel welder |
| CN210559086U (en) * | 2019-07-31 | 2020-05-19 | 嘉兴市金腾机械股份有限公司 | Adjustable jack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110304573A (en) | 2019-10-08 |
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