CN114701966A - Hand jack of portable - Google Patents
Hand jack of portable Download PDFInfo
- Publication number
- CN114701966A CN114701966A CN202210307950.3A CN202210307950A CN114701966A CN 114701966 A CN114701966 A CN 114701966A CN 202210307950 A CN202210307950 A CN 202210307950A CN 114701966 A CN114701966 A CN 114701966A
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- CN
- China
- Prior art keywords
- rotating
- jack
- portable hand
- hand jack
- pawl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007423 decrease Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002337 anti-port Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- 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
-
- 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
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
-
- 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
- B66F3/16—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through bevel-wheel gearings
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a portable hand jack, which comprises: a housing having a receiving cavity with an open top; wherein, a chute arranged along the vertical direction is formed on the inner side wall of the shell; the first screw is vertically and rotatably arranged in the accommodating cavity; the moving piece is in threaded connection with the first screw rod, and the top end of the moving piece extends out of the shell through the opening; the moving piece is provided with a sliding block matched with the sliding groove; a rotating member rotatably connected to the housing, one end of which extends into the accommodating cavity; the first gear is positioned in the accommodating cavity and is arranged on the first screw rod; the second gear is positioned in the accommodating cavity, is connected with the rotating part and is meshed with the first gear; a restricting portion for preventing the rotation member from rotating in a reverse direction. The invention can avoid safety accidents.
Description
Technical Field
The invention relates to the technical field of jacks, in particular to a portable hand-operated jack.
Background
The jack is a rigid jacking piece used as a working device. The jack is mainly used for the departments of factories, mines, transportation and the like as vehicle repair, other lifting, supporting and the like. The structure is light, firm, flexible and reliable, and can be carried and operated by one person.
Jacks have been widely used as mechanical maintenance tools, and the jacks sold in the market at present are mainly classified into three types, namely rack jacks, screw jacks, hydraulic jacks and the like.
In chinese patent application No.: CN202010545477.3 discloses a dual-purpose jack for electric drill and hand cranking. This jack is on current hand jack basis, still be fixed with hexagonal head in its gear shaft outside of jack body, the hexagonal head is in the gear housing outside of jack body, still be equipped with the adapter on the gear shaft between hexagonal head and the epaxial bevel gear of gear simultaneously, the adapter is fixed with the gear shaft, the activity is fixed with on the adapter drives adapter pivoted crank, of course in the above-mentioned structure, adapter and gear shaft also can be clearance fit, and the crank includes the rocker and fixes the crank on the rocker, the rocker both sides are turned over the degree to ninety degrees in same direction and are used for joint hexagonal head, rocker lower extreme downwardly extending has the extension, two extension cards are fixed by the bolt behind the adapter outside, the rocker can make a round trip to overturn. When the technical scheme is used, the jack needs to jack up larger weight, and the technical scheme is not provided with a protection mechanism, so that the protection mechanism can be reversed to cause safety accidents. In view of this, further improvements are desired.
Disclosure of Invention
The invention provides a portable hand jack, which aims to solve at least one technical problem in the background technology.
The invention provides a portable hand jack, which comprises:
a housing having a receiving cavity with an open top; wherein, a chute arranged along the vertical direction is formed on the inner side wall of the shell;
the first screw is vertically and rotatably arranged in the accommodating cavity;
the moving piece is in threaded connection with the first screw rod, and the top end of the moving piece extends out of the shell through the opening; the moving piece is provided with a sliding block matched with the sliding groove;
a rotating member rotatably connected to the housing, one end of which extends into the accommodating cavity;
the first gear is positioned in the accommodating cavity and is arranged on the first screw rod;
the second gear is positioned in the accommodating cavity, is connected with the rotating part and is meshed with the first gear;
a restricting portion for preventing the rotation member from rotating in a reverse direction.
Preferably, the jack comprises:
a ratchet wheel mounted on the rotating member;
and the pawl is arranged on the shell, is matched with the ratchet wheel and is used for preventing the ratchet wheel from rotating in the reverse direction.
Preferably, the jack further comprises:
the rotating shaft is arranged on the shell and is parallel to the rotating piece;
the supporting piece is rotatably arranged on the rotating shaft; the pawl is movably connected with the support;
and the stop block is arranged on one side of the support part and is used for preventing the ratchet wheel from rotating in the reverse direction through the support part and the pawl.
Preferably, the jack further comprises a first elastic member, the first elastic member is arranged along the length direction of the rotating shaft, and a first end of the first elastic member is connected with the pawl and the other end of the first elastic member is connected with the supporting member.
Preferably, the jack further comprises a second elastic member, a first end of the second elastic member is connected to the housing, a second end of the second elastic member is connected to the supporting member, and the second elastic member provides an elastic force to the supporting member in a direction toward the stopper.
Preferably, the jack comprises:
a rotating shaft rotatably mounted on the top end of the moving member;
a mounting member provided on the rotating shaft;
a jack-up member disposed on the mounting member.
Preferably, the jack-up member comprises:
a second screw rod arranged along the vertical direction;
the threaded pipe is in threaded connection with the second screw rod;
and the top plate is arranged on the threaded pipe.
Preferably, the jack-up member is plural and arranged at intervals around the circumference of the rotating shaft.
Preferably, the jack further comprises:
two clamping plates which are arranged at intervals;
and the power part is arranged on the rotating shaft and drives the two clamping plates to be close to or away from each other.
Preferably, the rotating part is provided with a handle.
The invention has the beneficial effects that:
rotate the piece through clockwise rotation, drive second gear, first screw rod through first gear and rotate, drive the moving member and rise along vertical direction, and then jack-up outside heavy object.
Through setting up restriction portion, avoid rotating a reverse rotation, avoid anticlockwise rotation promptly, avoid the unexpected decline of moving member, avoid taking place the incident.
Drawings
FIG. 1 is a front view of the present disclosure;
FIG. 2 is a cross-sectional view of the present disclosure;
FIG. 3 is a right side view of the present disclosure;
FIG. 4 is an axial view of the present disclosure;
FIG. 5 is an axial view of the ratchet, pawl, etc. disclosed herein;
FIG. 6 is an axial view of the ratchet, pawl, etc. disclosed herein;
FIG. 7 is an axial view of a cleat or the like in accordance with the present disclosure;
fig. 8 is a schematic view of the support weights disclosed herein.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present application may be combined with each other; 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, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left" and "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus are not to be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 to 7, the present invention provides a portable hand jack, including:
a housing 1 having a receiving chamber 101 with an open top; wherein, a chute 102 arranged along the vertical direction is formed on the inner side wall of the housing 1.
The first screw rod 2 is vertically and rotatably arranged in the accommodating cavity 101; a moving member 3, which is in threaded connection with the first screw 2, and the top end of which extends out of the housing 1 through the opening; the moving part 3 is provided with a sliding block 301 matched with the sliding groove 102, and the sliding block 301 can slide in the sliding groove 102.
A rotating member 4 rotatably connected to the housing 1, wherein one end of the rotating member 4 extends into the accommodating cavity 101, and the rotating member 4 may be a rotating rod; a first gear 5 located in the accommodating cavity 101 and mounted on the first screw 2; a second gear 6 located in the accommodating chamber 101, connected to the rotating member 4, and engaged with the first gear 5; the first gear 5 and the second gear 6 can be bevel gears; a restricting portion for preventing the rotation member 4 from rotating in the reverse direction. The rotating part 4 is provided with a handle 20. The turning member 4 can be rotated by means of the handle 20.
With reference to fig. 1, 2 and 3, the rotating member 4 rotates clockwise, the first gear 5 drives the second gear 6 and the first screw rod 2 to rotate, the moving member 3 is driven to ascend along the vertical direction, and then the external heavy object is jacked up.
Through setting up restriction portion, avoid rotating 4 antiport, avoid anticlockwise rotation promptly, avoid the unexpected decline of moving member 3, avoid taking place the incident.
As a further refinement of the above embodiment, in one embodiment the jack comprises:
a ratchet wheel 7 arranged on the rotating part 4; and a pawl 8 arranged on the shell 1 and matched with the ratchet wheel 7 for preventing the ratchet wheel 7 from rotating in the reverse direction.
As a further refinement of the above embodiment, in one embodiment, the jack further comprises:
a rotating shaft 9 disposed on the housing 1 and arranged in parallel with the rotating member 4; a supporting member 10 rotatably disposed on the rotating shaft 9; the pawl 8 is movably connected with the support 10; a stopper 11 is disposed at one side of the support 10 for preventing the ratchet 7 from rotating in the reverse direction by the support 10 and the pawl 8.
With reference to fig. 4, 5 and 6, the rotating member 4 can normally rotate clockwise.
Referring to fig. 5, the stopper 11 is disposed on the left side of the supporting member 10 to prevent the supporting block and the pawl 8 from rotating clockwise, i.e., effectively prevent the ratchet 7 from rotating counterclockwise, so as to prevent the moving member 3 from accidentally descending during operation or supporting, thereby avoiding safety accidents.
As a further improvement to the above embodiment, in one embodiment, the jack further includes a first elastic member 12, the first elastic member 12 is disposed along the length direction of the rotating shaft 9, and a first end of the first elastic member 12 is connected to the pawl 8, and the other end of the first elastic member 12 is connected to the support member 10 and may be a spring.
Referring to fig. 6, the pawl 8 is engaged with the ratchet 7 when the first elastic member 12 is in a natural state. When the pawl 8 moves rightwards, the first elastic element 12 is used for providing elastic force to the pawl 8 towards the ratchet wheel 7, namely providing pulling force, so that the pawl 8 is prevented from being accidentally separated from the ratchet wheel 7, and safety accidents are avoided.
After the use is accomplished, when needing to descend moving member 3, overcome the elasticity of second elastic component 13, through moving pawl 8 to the right, let pawl 8 and ratchet 7 separation, at this moment, can the counter rotation rotate piece 4, let moving member 3 descend reset can. And then release the pawl 8 to allow the pawl 8 to reset.
As a further improvement to the above embodiment, in one embodiment, the jack further includes a second elastic member 13, a first end of the second elastic member 13 is connected to the housing 1, a second end of the second elastic member 13 is connected to the supporting member 10, and the second elastic member 13 provides an elastic force to the supporting member 10 in a direction toward the stopper 11.
In the process of clockwise rotation of the ratchet wheel 7, when the ratchet wheel 7 drives the pawl 8 to rotate anticlockwise for one intersection, the second elastic part 13 provides tension for the support and the pawl 8, and after the pawl 8 is separated from one ratchet on the ratchet wheel 7, the support part 10 and the pawl 8 are reset, so that accidental separation of the pawl 8 and the ratchet wheel 7 is avoided, and safety accidents are avoided.
As a further refinement of the above embodiment, in one embodiment the jack comprises:
a rotating shaft 14 rotatably mounted on the top end of the moving member 3; a mounting member 15 provided on the rotary shaft 14; a jack-up member is provided on the mounting member 15.
For some special heavy objects, the shell 1 of the jack is not easy to be arranged below the heavy object, the rotating shaft 14 can be rotated at the moment, the jacking piece is arranged below the heavy object, then the moving piece 3 is lifted, and the heavy object is jacked by the jacking piece.
As a further refinement of the above embodiment, in one embodiment the jacking members comprise:
a second screw 16 arranged in the vertical direction; a threaded pipe 17 in threaded connection with the second screw 16; a top plate 18 mounted on the threaded pipe 17.
As a further improvement of the above embodiment, in one embodiment, the jacking members are plural and arranged at intervals around the circumference of the rotating shaft 14.
For some heavy objects, the support can be required to be positioned at different plane positions, so that the support can be abutted to different positions of the heavy object conveniently by arranging a plurality of jacking pieces.
After the moving member 3 brings the top plate 18 close to the weight Z, the top plate 18 is brought into contact with the weight by rotating the threaded pipe 17.
As shown in fig. 1 and 8, by providing a plurality of lifting members, different top plates 18 can be positioned at different height positions to contact different positions of the weight Z.
Then, the moving member 3 is continuously lifted to jack up the weight.
As a further refinement of the above embodiment, in one embodiment, the jack further comprises:
two clamping plates 19 which are arranged at intervals; and the power part is arranged on the rotating shaft 14 and drives the two clamping plates 19 to approach or move away from each other.
The power member may comprise a base plate 21, a cross bar 22 transversely arranged to allow the base plate 21 to be mounted on the rotary shaft 14 and to allow the two clamping plates 19 to be slidably connected to the base plate 21; the cross bar 22 is provided with a first thread 221 and a second thread 222, the rotating directions of the first thread 221 and the second thread 222 are opposite, and the first thread 221 and the second thread 222 are respectively in threaded connection with the two clamping plates 19.
By rotating the bottom plate 21, the position of the two clamping plates 19 is adjusted.
By rotating the cross bar 22, the two clamping plates 19 are close to clamp the weight Z, and the weight Z is prevented from being separated from the top plate 18 accidentally.
After use, the cross bar 22 is rotated in the opposite direction to separate the two jaws 19.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A portable hand jack, comprising:
a housing having a receiving cavity with an open top; wherein, a chute arranged along the vertical direction is formed on the inner side wall of the shell;
the first screw is vertically and rotatably arranged in the accommodating cavity;
the moving piece is in threaded connection with the first screw rod, and the top end of the moving piece extends out of the shell through the opening; the moving piece is provided with a sliding block matched with the sliding groove;
a rotating member rotatably connected to the housing, one end of which extends into the accommodating cavity;
the first gear is positioned in the accommodating cavity and is arranged on the first screw rod;
the second gear is positioned in the accommodating cavity, is connected with the rotating part and is meshed with the first gear;
a restricting portion for preventing the rotation member from rotating in a reverse direction.
2. The portable hand jack of claim 1, wherein the jack comprises:
a ratchet wheel mounted on the rotating member;
and the pawl is arranged on the shell, is matched with the ratchet wheel and is used for preventing the ratchet wheel from rotating in the reverse direction.
3. The portable hand jack of claim 2, further comprising:
the rotating shaft is arranged on the shell and is parallel to the rotating piece;
the supporting piece is rotatably arranged on the rotating shaft; the pawl is movably connected with the support;
and the stop block is arranged on one side of the support part and is used for preventing the ratchet wheel from rotating in the reverse direction through the support part and the pawl.
4. The hand jack of claim 3, further comprising a first resilient member disposed along the length of the shaft, the first resilient member having a first end connected to the pawl and an opposite end connected to the support member.
5. The portable hand jack of claim 3, further comprising a second resilient member, a first end of said second resilient member being connected to said housing and a second end of said second resilient member being connected to said support member, said second resilient member providing a resilient force to said support member in a direction toward said stop.
6. The portable hand jack of claim 1, wherein the jack comprises:
a rotating shaft rotatably mounted on the top end of the moving member;
a mounting member provided on the rotating shaft;
a jack-up member disposed on the mounting member.
7. The portable hand jack of claim 6, wherein the jack-up member comprises:
a second screw rod arranged along the vertical direction;
the threaded pipe is in threaded connection with the second screw;
and the top plate is arranged on the threaded pipe.
8. The portable hand jack of claim 7, wherein the jacking members are plural, circumferentially spaced about the axis of rotation.
9. The portable hand jack of claim 6, further comprising:
two clamping plates which are arranged at intervals;
and the power part is arranged on the rotating shaft and drives the two clamping plates to be close to or away from each other.
10. The portable hand jack of claim 1, wherein the rotating member is provided with a handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307950.3A CN114701966A (en) | 2022-03-26 | 2022-03-26 | Hand jack of portable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307950.3A CN114701966A (en) | 2022-03-26 | 2022-03-26 | Hand jack of portable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114701966A true CN114701966A (en) | 2022-07-05 |
Family
ID=82170475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210307950.3A Pending CN114701966A (en) | 2022-03-26 | 2022-03-26 | Hand jack of portable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114701966A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285874A (en) * | 2022-07-08 | 2022-11-04 | 浙江宏钰起重机械有限公司 | Manual capstan |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293002A (en) * | 1994-04-22 | 1995-11-07 | Mitsuo Sasaki | Elevation type moving assembly form machine |
| US20130220760A1 (en) * | 2012-02-23 | 2013-08-29 | Woo Sing Industrial Co., Ltd | Ratchet braking structure |
| CN205472420U (en) * | 2015-12-30 | 2016-08-17 | 武汉轻工大学 | Bevel gear driven type machinery jack |
| CN107601340A (en) * | 2017-09-21 | 2018-01-19 | 刘瑞 | A kind of scissor jack of automobile using |
| CN208361801U (en) * | 2018-05-18 | 2019-01-11 | 云南农业大学 | Lifting platform is used in a kind of experiment |
| CN210133841U (en) * | 2019-07-05 | 2020-03-10 | 杨家印 | Electric boosting device for vehicle jack |
| CN210185977U (en) * | 2019-04-22 | 2020-03-27 | 香见欢 | Leg lifting frame for operation |
| CN211430580U (en) * | 2019-10-29 | 2020-09-08 | 南京工程学院 | City dog class safety restriction protective equipment |
| CN211506036U (en) * | 2020-03-20 | 2020-09-15 | 歌尔科技有限公司 | Adjustable head wears and head-mounted apparatus |
| CN213427118U (en) * | 2020-11-04 | 2021-06-15 | 杭州余杭兴挺茶业有限公司 | Tealeaves sunning frame with upset function |
| CN215727412U (en) * | 2021-08-14 | 2022-02-01 | 河北科华检测技术服务集团有限公司 | Wire take-up structure of drop hammer impact testing machine |
| CN215756172U (en) * | 2021-07-28 | 2022-02-08 | 辽宁宝城建设工程安装有限公司 | Telescopic panel installation lifting support |
-
2022
- 2022-03-26 CN CN202210307950.3A patent/CN114701966A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293002A (en) * | 1994-04-22 | 1995-11-07 | Mitsuo Sasaki | Elevation type moving assembly form machine |
| US20130220760A1 (en) * | 2012-02-23 | 2013-08-29 | Woo Sing Industrial Co., Ltd | Ratchet braking structure |
| CN205472420U (en) * | 2015-12-30 | 2016-08-17 | 武汉轻工大学 | Bevel gear driven type machinery jack |
| CN107601340A (en) * | 2017-09-21 | 2018-01-19 | 刘瑞 | A kind of scissor jack of automobile using |
| CN208361801U (en) * | 2018-05-18 | 2019-01-11 | 云南农业大学 | Lifting platform is used in a kind of experiment |
| CN210185977U (en) * | 2019-04-22 | 2020-03-27 | 香见欢 | Leg lifting frame for operation |
| CN210133841U (en) * | 2019-07-05 | 2020-03-10 | 杨家印 | Electric boosting device for vehicle jack |
| CN211430580U (en) * | 2019-10-29 | 2020-09-08 | 南京工程学院 | City dog class safety restriction protective equipment |
| CN211506036U (en) * | 2020-03-20 | 2020-09-15 | 歌尔科技有限公司 | Adjustable head wears and head-mounted apparatus |
| CN213427118U (en) * | 2020-11-04 | 2021-06-15 | 杭州余杭兴挺茶业有限公司 | Tealeaves sunning frame with upset function |
| CN215756172U (en) * | 2021-07-28 | 2022-02-08 | 辽宁宝城建设工程安装有限公司 | Telescopic panel installation lifting support |
| CN215727412U (en) * | 2021-08-14 | 2022-02-01 | 河北科华检测技术服务集团有限公司 | Wire take-up structure of drop hammer impact testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285874A (en) * | 2022-07-08 | 2022-11-04 | 浙江宏钰起重机械有限公司 | Manual capstan |
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