CN217516590U - Worm gear type twin jack - Google Patents
Worm gear type twin jack Download PDFInfo
- Publication number
- CN217516590U CN217516590U CN202221178257.2U CN202221178257U CN217516590U CN 217516590 U CN217516590 U CN 217516590U CN 202221178257 U CN202221178257 U CN 202221178257U CN 217516590 U CN217516590 U CN 217516590U
- Authority
- CN
- China
- Prior art keywords
- worm
- driven shaft
- sliding sleeve
- jack
- jack body
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a worm-gear type twin jack belongs to jack technical field, including jack body, worm, driven shaft and sliding sleeve, the worm with the jack body rotates to be connected, the lower tip of driven shaft with the jack body rotates to be connected, the driven shaft lower part be equipped with worm engaged with worm wheel, the driven shaft top is equipped with the external screw thread, be equipped with the internal thread with external screw thread matched with in the sliding sleeve, the sliding sleeve with driven shaft threaded connection, be equipped with the confession on the jack body the guide way that the sliding sleeve was worn out, the top of sliding sleeve is connected with the roof. The utility model adopts the double-screw mechanism to be fixedly connected with the top plate, the supporting structure is more stable, and the supporting amount is increased; the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the mechanism has self-locking performance, reverse self-locking can be realized, namely, the worm wheel can only be driven by the worm, but not the worm wheel can drive the worm, and the safety protection effect can be realized.
Description
Technical Field
The utility model relates to a jack technical field, in particular to worm gear formula twin jack.
Background
The jack is light and small lifting equipment which takes a rigid jacking piece as a working device and jacks a heavy object through a top bracket or a bottom supporting claw within a small stroke. The jack is mainly used for the departments of factories, mines, transportation and the like as vehicle repair and other lifting, supporting and the like. The structure is light and firm, flexible and reliable, and can be carried and operated by one person
The jack can be divided into a rack jack, a screw jack and a hydraulic jack according to the structural characteristics. The screw jack is the most common jack, and the threads of the existing screw jack have no self-locking function and are provided with a brake. When the brake is released, the heavy object can be quickly lowered by itself to shorten the return time, but the structure of the jack is complex. The screw jack can support heavy objects for a long time, the maximum lifting capacity reaches 100 t, and the application is wide. After the horizontal screw rod is arranged on the lower part, the heavy object can also move transversely at a small distance. In addition, the existing screw jack only adopts one screw rod to lift, so that the lifting capacity is limited and the problem of unstable support also exists.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a wheeled twin jack solves the limited and unstable problem of support of current screw jack-up weight.
(II) technical scheme
In order to solve the technical problem, the utility model provides a technical scheme does:
the worm wheel type twin jack comprises a jack body, a worm, a driven shaft and a sliding sleeve, wherein the worm is connected with the jack body in a rotating mode, the lower end portion of the driven shaft is connected with the jack body in a rotating mode, a worm wheel meshed with the worm is arranged on the lower portion of the driven shaft, an external thread is arranged above the driven shaft, an internal thread matched with the external thread is arranged in the sliding sleeve, the sliding sleeve is in threaded connection with the driven shaft, a guide groove for the sliding sleeve to penetrate out is formed in the jack body, and a top plate is connected to the top of the sliding sleeve.
The driven shafts are two, namely a left driven shaft and a right driven shaft respectively, a left worm wheel is arranged on the lower portion of the left driven shaft, a right worm wheel is arranged on the lower portion of the right driven shaft, and the left worm wheel and the right worm wheel are meshed with the worm respectively and are located on the left side and the right side of the worm.
The sliding sleeves are two and are respectively a left sliding sleeve and a right sliding sleeve, the left sliding sleeve is in threaded connection with the left driven shaft, and the right sliding sleeve is in threaded connection with the right driven shaft.
Wherein, the part of the worm extending out of the jack body is connected with a rotating handle.
And the part of the worm extending out of the jack body is connected with an output shaft of the motor.
Wherein the lead angle of the worm is smaller than the equivalent friction angle between the meshing wheel teeth of the left worm wheel and the right worm wheel.
(III) advantageous effects
The technical scheme provided by the utility model, compared with prior art, following beneficial effect has:
the utility model adopts the double-screw mechanism to be fixedly connected with the top plate, the supporting structure is more stable, and the supporting amount is increased; the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the mechanism has self-locking performance, reverse self-locking can be realized, namely, the worm wheel can only be driven by the worm, but not the worm wheel can drive the worm, and the safety protection effect can be realized. The worm-gear twin jack of the utility model has simple structure and low production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other embodiments can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a middle worm-gear twin jack of the present invention;
FIG. 2 is a schematic view of the internal structure of the middle worm-gear twin jack of the present invention;
in the figure, 1, a jack body, 2, a worm, 3, a left driven shaft, 4, a right driven shaft, 5, a left worm wheel, 6, a right worm wheel, 7, an external thread, 8, a left sliding sleeve, 9, a right sliding sleeve, 10, a left guide groove, 11, a right guide groove and 12, a top plate.
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to specific embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-2, the present embodiment provides a worm-gear type twin jack, which includes a jack body 1, a worm 2, a driven shaft and a sliding sleeve, wherein the worm 2 is rotatably connected to the jack body 1, a lower end portion of the driven shaft is rotatably connected to the jack body 1, a worm wheel meshed with the worm 2 is disposed at a lower portion of the driven shaft, an external thread 7 is disposed above the driven shaft, an internal thread matched with the external thread 7 is disposed in the sliding sleeve, the sliding sleeve is in threaded connection with the driven shaft, and the driven shaft and the sliding sleeve form a screw transmission mechanism. Be equipped with the confession on the jack body 1 the guide way that the sliding sleeve wore out, the stability of going up and down has been improved in the setting of guide way, and the top of sliding sleeve is connected with roof 12. During operation, the top plate 12 is abutted to the lower portion of a part to be jacked, the worm 2 rotates to drive the worm wheel to rotate, the worm wheel drives the driven shaft to rotate, and then the sliding shaft is driven to move upwards along the driven shaft, so that the lifting effect is achieved.
Wherein, for the stability that improves the mechanism, the driven shaft is two, is left driven shaft 3 and right driven shaft 4 respectively, and 3 lower parts of left driven shaft are equipped with left worm wheel 5, and 4 lower parts of right driven shaft are equipped with right worm wheel 6, left worm wheel 5 with right worm wheel 6 meshes with worm 2 respectively mutually to be located the left and right sides of worm 2. The worm 2 drives the left worm wheel 5 and the right worm wheel 6 to rotate back to back simultaneously, and then drives the top plate 121 to move upwards through the sliding block, so that the object to be jacked is jacked up.
Wherein, the sliding sleeve is two, is left sliding sleeve 8 and right sliding sleeve 9 respectively, and left sliding sleeve 8 and 3 threaded connection of left driven shaft, right sliding sleeve 9 and 4 threaded connection of right driven shaft. The number of the guide grooves is also two, namely a left guide groove 10 and a right guide groove 11.
Wherein, the part of the worm extending out of the jack body 1 is connected with a rotating handle (not shown in the figure), or the part of the worm extending out of the jack body 1 is connected with an output shaft of a motor (not shown in the figure). I.e. the power part of the worm may be a handle or a motor.
Wherein, the lead angle of the worm is smaller than the equivalent friction angle between the meshing wheel teeth of the left worm wheel 5 and the right worm wheel 6. The mechanism has self-locking property, can realize reverse self-locking, namely, the worm wheel can be driven only by the worm, but the worm wheel cannot drive the worm, and can play a role in safety protection. When the object to be jacked is put down, the handle is rotated in the opposite direction or the motor is rotated reversely.
It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A worm gear type twin jack is characterized in that: including jack body, worm, driven shaft and sliding sleeve, the worm with the jack body rotates to be connected, the lower tip of driven shaft with the jack body rotates to be connected, the driven shaft lower part be equipped with worm engaged with worm wheel, the driven shaft top is equipped with the external screw thread, be equipped with the internal thread with external screw thread matched with in the sliding sleeve, the sliding sleeve with driven shaft threaded connection, be equipped with the confession on the jack body the guide way that the sliding sleeve wore out, the top of sliding sleeve is connected with the roof.
2. A worm-gear twin jack according to claim 1 wherein: the driven shaft is two, is left driven shaft and right driven shaft respectively, left side driven shaft lower part is equipped with left worm wheel, right side driven shaft lower part is equipped with right worm wheel, left side worm wheel with right worm wheel respectively with the worm meshes mutually, and is located the left and right sides of worm.
3. A worm-gear twin jack according to claim 2 wherein: the sliding sleeves are two and are respectively a left sliding sleeve and a right sliding sleeve, the left sliding sleeve is in threaded connection with the left driven shaft, and the right sliding sleeve is in threaded connection with the right driven shaft.
4. A worm-gear twin jack according to claim 1 wherein: the part of the worm extending out of the jack body is connected with a rotating handle.
5. A worm-gear twin jack according to claim 1 wherein: and the part of the worm extending out of the jack body is connected with an output shaft of the motor.
6. A worm-gear twin jack according to claim 2 wherein: the lead angle of the worm is smaller than the equivalent friction angle between the meshing wheel teeth of the left worm wheel and the right worm wheel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221178257.2U CN217516590U (en) | 2022-05-17 | 2022-05-17 | Worm gear type twin jack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202221178257.2U CN217516590U (en) | 2022-05-17 | 2022-05-17 | Worm gear type twin jack |
Publications (1)
Publication Number | Publication Date |
---|---|
CN217516590U true CN217516590U (en) | 2022-09-30 |
Family
ID=83389410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202221178257.2U Active CN217516590U (en) | 2022-05-17 | 2022-05-17 | Worm gear type twin jack |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN217516590U (en) |
-
2022
- 2022-05-17 CN CN202221178257.2U patent/CN217516590U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN207296520U (en) | A kind of Household mechanical type multi-storied garage | |
CN212198405U (en) | Automatic elevator | |
CN212450521U (en) | Lifting operation platform capable of transversely telescopic operation | |
CN217516590U (en) | Worm gear type twin jack | |
CN212373561U (en) | Automatic support frame of two-wheeled electric vehicle | |
CN211945978U (en) | Electric hoist gantry crane hoisting device | |
CN209010071U (en) | A kind of lifting structures for mobile robot and a kind of mobile robot | |
CN211444875U (en) | Lifting mechanism for automatic lifting workbench | |
CN212687511U (en) | Fixed hydraulic elevator convenient to remove | |
CN214455774U (en) | Liftable cable drum device | |
CN214570395U (en) | Lifting conveying chain for automobile warehousing | |
CN213738370U (en) | Jack with continuous lifting function | |
CN213571555U (en) | Strutting arrangement is used in bridge construction | |
CN209890097U (en) | Derail-prevention electric hoist | |
CN112320555A (en) | Heavy-load suspension arm sliding device | |
CN207550258U (en) | A kind of novel elevating logistics trolley | |
CN112279075A (en) | Grabbing device of tower crane | |
CN110670927A (en) | Double-layer avoidance-free forward parking hydraulic reversing turnover plate type parking space | |
CN216711505U (en) | Heavy lifting platform | |
CN214828679U (en) | Lifting frame structure for loading and unloading vehicle | |
CN213505839U (en) | Forklift portal frame | |
CN220615629U (en) | Manual elevating mechanism for tarpaulin of high-rise truck | |
CN209685221U (en) | A kind of motor-driven jack | |
CN215798248U (en) | Electric automatization elevating gear | |
CN219654215U (en) | Lifting frame for building construction |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: 461500 east of the south section of Weiwu Avenue, Changge City, Xuchang City, Henan Province Patentee after: Henan Yongrong Power Co.,Ltd. Address before: 461500 east of the south section of Weiwu Avenue, Changge City, Xuchang City, Henan Province Patentee before: HENAN YONGRONG POWER TECHNOLOGY CO.,LTD. |