CN109231060B - Mechanical jack capable of lifting in two stages - Google Patents
Mechanical jack capable of lifting in two stages Download PDFInfo
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- CN109231060B CN109231060B CN201811316063.2A CN201811316063A CN109231060B CN 109231060 B CN109231060 B CN 109231060B CN 201811316063 A CN201811316063 A CN 201811316063A CN 109231060 B CN109231060 B CN 109231060B
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- disc
- inner core
- matched
- friction
- transmission shaft
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- 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
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
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- Invalid Beds And Related Equipment (AREA)
Abstract
The invention discloses a mechanical jack capable of lifting in two stages. Wherein, this jack includes: supporting platform, base and drive disk assembly, drive disk assembly includes: inner core, planet wheel, bearing stand, transmission shaft, disc, friction disk etc.. Wherein, the supporting platform is connected with the bearing upright post; the inner core is matched with the disc through a friction disc; the planet wheel is matched with the transmission shaft; the transmission shaft is in threaded fit with the bearing upright post; a plurality of transmission shafts are evenly distributed and matched on the disc; the disc drives the inner core to integrally ascend or descend by rotating the handle, so that primary ascending and descending are realized; when the disc reaches the limit height, the disc is limited, and the inner core can continue to rotate through the friction disc and drives the planet wheel to rotate; the planet wheel drives the transmission shaft, and the transmission shaft rotates and drives the bearing stand column to do linear motion, so that secondary lifting is realized. The invention can achieve the technical effect that the stroke is 2 times of that of the traditional single-rod mechanical jack under the condition of the same initial height by two-stage lifting.
Description
Technical Field
The invention relates to the technical field of detection of mechanical parts, in particular to a mechanical jack capable of lifting in two stages.
Background
With the increasing maturity of machining technology, the jack is widely applied to daily production and life.
Most of the jacks in the market are manufactured by taking a hydraulic control system as a basic principle. In some special fields, however, such as the detection field, hydraulic jacks are not necessary at all. The hydraulic jack is not only cumbersome and clumsy to use, but also relatively expensive to manufacture, so that the hydraulic jack can only be used in certain specific places. In addition, most of mechanical jacks in the current market are first-stage lifting jacks, and the achievable stroke height is obviously insufficient compared with the invention.
The applicant finds out through research that: the traditional mechanical jack can only realize one-level lifting. Before the lifting of the jack is realized, the original height of the jack is fixed. The traditional mechanical jack can be raised by 1 time at most compared with the original height theoretically, and cannot realize higher stroke.
In addition, the traditional mechanical jacks are all of one-foot structures, namely only one load-bearing upright post is arranged. The jack with one foot is likely to swing left and right in the lifting process, so that the load-bearing object cannot realize balanced lifting; simultaneously, "one foot" jack must just can realize automatic rising through mutually supporting of bearing stand and guide rail, has increased the processing cost and the cooperation degree of difficulty of bearing stand and rather than the cooperation guide rail, if there is not the cooperation of guide rail, the bearing stand will rotate along with the rotation of transmission shaft to the effect that can't play the lift.
Disclosure of Invention
In view of the above, in order to solve at least one problem in the prior art, the present invention provides a mechanical jack capable of lifting in two stages.
In some embodiments, the jack comprises:
a supporting platform, a base and a transmission component for primary lifting and secondary lifting, wherein,
the transmission part includes: inner core, planet wheel, bearing stand, transmission shaft, disc, friction disk, wherein:
the central upright post on the base is provided with external threads;
an inner hole of the disc is provided with an internal thread;
the base and the disc are in threaded fit;
the inner core is matched with the disc through a friction disc;
a plurality of transmission shafts are evenly distributed and matched on the disc;
the plurality of planet wheels are matched with the plurality of transmission shafts;
the transmission shafts are in threaded fit with the bearing upright columns;
the supporting platform is connected with a plurality of bearing upright columns;
wherein:
when the handle is rotated, the disk drives the inner core to integrally ascend or descend through the threaded fit between the base and the disk, so that primary ascending and descending are realized;
after the inner core reaches the limit height, the disc is limited, the inner core can continuously keep circumferential rotation through the friction disc and drives the planet wheels which are evenly distributed and matched on the disc to rotate;
the planet wheel rotates to drive the transmission shaft to rotate,
the transmission shaft rotates to drive the bearing upright post to do reciprocating linear motion, thereby realizing secondary lifting.
In a first aspect, the embodiment of the invention can realize primary lifting through the thread matching transmission of the base and the disc. After the first-stage lifting is realized, the bearing upright post and the transmission shaft are matched through threads, so that the second-stage lifting can be realized.
In a second aspect, the embodiment of the invention can achieve the technical effect that the stroke is 2 times of that of the traditional single-rod mechanical jack under the condition that the initial heights are the same through two-stage lifting.
In a third aspect, the embodiment of the invention has the advantages of simple structure, convenience in operation, low cost and portability, and the multi-rod (for example, three-rod) support is used for bearing, so that the multi-rod mechanical jack has larger bearing capacity and more uniform bearing compared with the traditional single-rod mechanical jack.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a two-stage liftable mechanical jack according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the core and base in accordance with one embodiment of the present invention;
FIG. 3 is a schematic diagram of the internal structural drive of the components of one embodiment of the present invention;
fig. 4 is a schematic top view of a two-stage liftable mechanical jack according to an embodiment of the present invention.
Wherein: supporting platform 1, inner core 2, planet wheel 3, bearing stand 4, transmission shaft 5, disc 6, friction disk 7, little worm 8, base 9, handle 10.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Features and illustrative embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific arrangement and method set forth below, but rather covers any improvements, substitutions and modifications in structure, method, and apparatus without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown to avoid unnecessarily obscuring the present invention.
It should be noted that, in the case of conflict, the embodiments and features of the embodiments of the present invention may be combined with each other, and the respective embodiments may be mutually referred to and cited. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic structural diagram of a two-stage lifting mechanical jack according to an embodiment of the present invention.
As shown in fig. 1, the two-stage liftable mechanical jack may include: supporting platform 1, inner core 2, bearing stand 4, base 9, handle 10.
The supporting platform 1 is fixedly connected with the bearing upright post 4, so that the supporting platform and the bearing upright post can synchronously perform lifting motion; the base 9 and the inner core 2 are matched through threads to achieve the effect of primary lifting; external force can be input through the handle 10, and the base 9 plays a bottom supporting role in the whole lifting process.
Fig. 2 is a schematic cross-sectional view of the core and base structure of an embodiment of the present invention.
As shown in fig. 2, the two-stage liftable mechanical jack may include: inner core 2, disc 6, friction disc 7, base 9.
The disc 6 is provided with an internal thread, and the base 9 is internally provided with a central upright post provided with an external thread. The external thread of the central upright column of the base 9 is matched with the internal thread of the disc 6, so that one-level lifting can be realized. The inner core 2 is connected with the disc 6 through a friction disc 7; the friction disc 7 is used for providing a friction force generated by lifting of more than one level, so that the disc 6 and the inner core 2 can synchronously rotate before the disc 6 is limited; meanwhile, the friction disc 7 can provide a friction force smaller than that generated by two-stage lifting, so that after the disc 6 is limited, the disc 6 stops rotating due to limitation, and the inner core 2 can continue to rotate through the friction disc 7. The inner core 2 is provided with external teeth and internal teeth, the external teeth of the inner core 2 are used for assisting the power transmission in the first-stage lifting process, and the internal teeth are used for the power transmission in the second-stage lifting process.
Fig. 3 is a schematic diagram of the transmission of the internal structure of the parts according to an embodiment of the invention.
As shown in fig. 3, the two-stage liftable mechanical jack may include: inner core 2, planet wheel 3, transmission shaft 5, disc 6, friction disk 7, little worm 8, base 9, handle 10.
The inner core 2 is connected with the disc 6 through the friction disc 7, when the handle 10 is just rotated, the inner core 2 and the disc 6 can rotate together due to the friction force of the friction disc 7, and meanwhile, the internal thread of the disc 6 is in threaded fit with the external thread on the upright post of the base 9, so that primary lifting can be realized; when the inner core 2 reaches the limit height, if the handle 10 is continuously rotated, the disc 6 stops rotating due to the limit, and the friction force of the friction disc 7 is not enough to prevent the rotating force of the inner core 2, the inner core 2 can continuously keep rotating circumferentially through the friction disc 7; the planetary wheels 3 and the transmission shafts 5 can be multiple, play a role in sharing and balancing weight force, are uniformly distributed and matched on the disc 6 in a 360-degree circumference mode in a one-to-one correspondence mode, and the inner teeth of the inner core 2 are matched with the planetary wheels 3, so that the rotary motion of the inner core 2 can be converted into the rotary motion of the planetary wheels 3; the planet wheel 3 is matched with the transmission shaft 5, and the planet wheel 3 can drive the transmission shaft 5 to synchronously rotate.
The friction coefficient of the friction disc 7 is larger than the resistance generated by the threaded rotation of the base 9 and the disc 6, so that the inner core 2, the disc 6 and the friction disc 7 synchronously rotate when the first-stage lifting is realized in the process, the disc 6 reaches a limit position to stop rotating when the second-stage lifting is realized, and the inner core 2 can continuously keep rotating by overcoming the friction force of the friction disc 7; the small worm 8 is fixedly connected with the handle 10, and meanwhile, the small worm 8 is matched with the outer teeth of the inner core 2, so that the rotation of the handle 10 can be converted into the rotation of the inner core 2.
Fig. 4 is a schematic top view of a two-stage liftable mechanical jack according to an embodiment of the present invention.
As shown in fig. 4, the two-stage liftable mechanical jack may include: the support platform 1, little worm 8, base 9, handle 10.
The supporting platform 1 plays a role of supporting an object in the whole two-stage lifting process besides the function of realizing one-stage lifting; the small worm 8 is fixedly connected with the handle 10, and the small worm 8 is matched on the base 9 to play a role in power input.
The structure and the advantages of the present invention will be further described with reference to fig. 1, fig. 2, fig. 3, and fig. 4.
As shown in fig. 1, 2, 3 and 4, the mechanical jack capable of two-stage lifting mainly comprises a supporting platform, a base and a transmission part, wherein in the process of two-stage lifting, the base 9 is always fixed, a central upright post with external threads is arranged in the center of the base 9, internal threads are arranged in the central hole of the disc 6, meanwhile, the disc 6 is matched with the inner core 2 through a friction disc 7, and the inner core 2 can rotate.
When using, rotate handle 10 with little worm 8 fixed connection, the external tooth of inner core 2 cooperates the transmission with little worm 8, thereby can convert the rotary motion of handle 10 into the rotary motion of inner core 2, and meanwhile, the rotary motion of inner core 2 can drive disc 6 through the frictional force that friction disk 7 produced and make rotary motion together, at this moment, the coefficient of friction disk 7 is greater than the produced resistance of base 9 and 6 screw thread rotations of disc, inner core 2 this moment, disc 6 and friction disk 7 can rotate in step, thereby make the internal thread of disc 6 and the external screw thread on the base 9 center post carry out the screw-thread fit transmission, can realize the one-level and go up and down.
After the jack is lifted to a certain height, the internal thread of the central hole on the disc 6 and the external thread on the central column of the base 9 reach the limit position and do not rotate any more, the disc 6 stops rotating correspondingly, at the moment, if the handle 10 is rotated continuously, the friction force of the friction disc 7 is not enough to prevent the resistance brought by the rotation process, and therefore the inner core 2 can be continuously rotated through the friction disc 7.
The rotation of inner core 2 can drive the rotation of planet wheel 3 of equipartition cooperation on disc 6 to drive the rotation of transmission shaft 5, transmission shaft 5 and bearing stand 4 threaded connection, and bearing stand 4 is fixed continuous with supporting platform 1, thereby realizes that transmission shaft 5 and bearing stand 4 produce relative back and forth movement, realizes second level raising and lowering functions promptly. Therefore, the two-stage ascending, starting, stopping and descending motions of the bearing platform 1 can be controlled only by manually rotating the handle 10, and the operation is very convenient.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (2)
1. A mechanical jack capable of lifting in two stages is characterized by comprising:
supporting platform (1), base (9) and the transmission part that is used for one-level lift and second grade lift, wherein: the transmission part includes: inner core (2), planet wheel (3), bearing stand (4), transmission shaft (5), disc (6), friction disk (7), wherein:
the central upright post on the base (9) is provided with external threads;
an inner hole of the disc (6) is provided with an internal thread;
the central upright post of the base (9) and the inner hole of the disc (6) have a thread fit relation;
the inner core (2) is arranged on the periphery of the disc (6) and is matched with the disc (6) through a friction disc (7);
the friction disc (7) is used for providing friction force, so that the disc (6) and the inner core (2) can synchronously rotate before the disc (6) is limited, and after the disc (6) is limited, the disc (6) stops rotating due to limitation, and the inner core (2) can continuously rotate through the friction disc (7);
a plurality of transmission shafts (5) are evenly distributed and matched on the disc (6);
the plurality of planet wheels (3) are matched with the plurality of transmission shafts (5);
the inner core (2) comprises: external and internal teeth;
the outer teeth of the inner core (2) can enable the inner core (2) to rotate circumferentially through external force;
the inner teeth of the inner core (2) are meshed with the planet wheel (3) gear, so that the inner core (2) rotates to drive the planet wheel (3) to rotate;
the transmission shafts (5) are in threaded fit with the bearing upright columns (4);
the supporting platform (1) is connected with a plurality of bearing upright columns (4);
the handle (10) is fixedly connected with the small worm (8);
the small worm (8) is arranged on the side wall of the base (9);
the small worm (8) is meshed with the external teeth of the inner core (2);
when the small worm (8) and the external teeth on the outer wall of the inner core (2) are in meshing transmission, the longitudinal circular motion of the handle (10) can be converted into the plane circular motion of the inner core (2);
when the handle is rotated, the base (9) is matched with the disc (6) through threads, so that the disc (6) drives the inner core (2) to integrally ascend or descend, and primary ascending and descending are realized;
the handle is continuously rotated, the disc (6) reaches the limit height, the disc (6) is limited, and the inner core (2) can continuously keep circumferential rotation through the friction disc (7), so that a plurality of planet wheels (3) which are evenly distributed and matched on the disc (6) are driven to rotate;
the rotation of the plurality of planet wheels (3) drives the plurality of transmission shafts (5) to rotate;
the transmission shafts (5) are matched with the threads of the bearing upright columns (4) to realize the linear reciprocating motion of the bearing upright columns (4), so that the two-stage lifting is realized.
2. A jack as claimed in claim 1 in which:
the transmission shafts (5) are distributed evenly according to the circumference of 360 degrees;
the planetary wheels (3) are distributed evenly according to the circumference of 360 degrees and are respectively matched with the transmission shaft (5);
the bearing upright columns (4) are distributed evenly according to the circumference of 360 degrees and are respectively in threaded fit with the transmission shaft (5);
the number of the planet wheels (3), the bearing upright columns (4) and the transmission shafts (5) corresponds to one another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316063.2A CN109231060B (en) | 2018-11-05 | 2018-11-05 | Mechanical jack capable of lifting in two stages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811316063.2A CN109231060B (en) | 2018-11-05 | 2018-11-05 | Mechanical jack capable of lifting in two stages |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109231060A CN109231060A (en) | 2019-01-18 |
| CN109231060B true CN109231060B (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811316063.2A Active CN109231060B (en) | 2018-11-05 | 2018-11-05 | Mechanical jack capable of lifting in two stages |
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| Country | Link |
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| CN (1) | CN109231060B (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3398933A (en) * | 1966-06-29 | 1968-08-27 | Victor G. Haroldson | Adjustable pedestal for elevated flooring |
| JPH0899796A (en) * | 1994-08-01 | 1996-04-16 | Kanshi Tomidokoro | Booster |
| JP3252318B2 (en) * | 1997-05-30 | 2002-02-04 | 株式会社ミルコン | Concrete block adjuster |
| JPH1135291A (en) * | 1997-07-15 | 1999-02-09 | Keizo Kasama | Manual jack prevented from being reversibly rotated, and reverse rotation preventing device used thereof |
| CN2705442Y (en) * | 2004-01-09 | 2005-06-22 | 陈祥标 | Electric jack |
| CN201825692U (en) * | 2010-10-19 | 2011-05-11 | 刘德时 | Electric lifting rod |
| CN201962046U (en) * | 2011-04-07 | 2011-09-07 | 朱建彬 | Parallel stretchable guide rail system |
| CN202226602U (en) * | 2011-08-22 | 2012-05-23 | 梁德泉 | Multistage screw jack |
| CN102491217B (en) * | 2011-12-12 | 2014-01-15 | 中国科学院长春光学精密机械与物理研究所 | Ball screw and sliding screw mutually nested type synchronous lifting photoelectric mast |
| CN203593576U (en) * | 2013-10-14 | 2014-05-14 | 宝钢集团新疆八一钢铁有限公司 | Leading screw jack |
| US9469513B2 (en) * | 2014-01-05 | 2016-10-18 | II James O Rogers | Ratcheting, self-aligning load-support device |
| CN204999560U (en) * | 2015-10-09 | 2016-01-27 | 杭州南江机器人股份有限公司 | Spiral lifting mechanism and AGV dolly |
| CN205076748U (en) * | 2015-10-21 | 2016-03-09 | 无锡市海鹰工程装备公司 | Second grade lift slewer |
-
2018
- 2018-11-05 CN CN201811316063.2A patent/CN109231060B/en active Active
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| Publication number | Publication date |
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| CN109231060A (en) | 2019-01-18 |
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