CN110817727A - Mechanical jack for automobile - Google Patents
Mechanical jack for automobile Download PDFInfo
- Publication number
- CN110817727A CN110817727A CN201911149263.8A CN201911149263A CN110817727A CN 110817727 A CN110817727 A CN 110817727A CN 201911149263 A CN201911149263 A CN 201911149263A CN 110817727 A CN110817727 A CN 110817727A
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- section
- base
- hole
- internal thread
- face
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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
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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 mechanical automobile jack, which comprises a top plate (1), a thrust bearing (2), a mandril bolt (3), a switching section (4) and a base (5), wherein the outer surface of the base (5) is provided with threads; the switching section (4) is provided with a first internal thread section and a second internal thread section which are coaxial but have different major diameters, and the first internal thread section is in threaded connection with the base (5); the screw section of the ejector rod bolt (3) is connected with the second internal thread section on the switching section (4); the upper end face of the top plate (1) is a supporting plane, an inner hole is formed in the lower end face of the top plate (1), a thrust bearing (2) is arranged in the inner hole, and the thrust bearing (2) is connected with one end of the ejector bolt (3). The invention has the advantages of convenient carrying, simple and labor-saving use and adjustable supporting height.
Description
Technical Field
The invention relates to a jack, in particular to a jacking structure and a height adjusting structure of the jack.
Background
The automobile becomes a main vehicle in our life, and a jack which is a tool for temporarily supporting the automobile when tires are replaced, pits and the like are inevitably encountered during a journey, and large-scale hoisting equipment such as an electric crane cannot be used due to the fact that the jack is far away from a repair shop. The existing automobile jack used on a vehicle is a practical jack which has the characteristics of convenience in carrying, simplicity in use, small force application and the like.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a mechanical automobile jack which has the characteristics of convenience in carrying, simplicity and labor saving in use, adjustable supporting height and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
a mechanical jack for an automobile comprises a jack body,
the outer surface of the base is provided with threads;
the adapter section is provided with a first internal thread section and a second internal thread section which are coaxial but have different major diameters, and the first internal thread section is in threaded connection with the base;
the screw rod section of the ejector rod bolt is connected with the second internal thread section on the switching section;
the ejector pin bolt comprises a top plate, wherein the upper end surface of the top plate is a supporting plane, an inner hole is formed in the lower end surface of the top plate, a thrust bearing is arranged in the inner hole, and the thrust bearing is connected with one end of the ejector pin bolt.
Furthermore, a screw hole is arranged at the thread position on the outer surface of the base, the axis of the screw hole is vertical to the axis of the base, and a locking nail is detachably connected in the screw hole.
Furthermore, the outer surface of the base is provided with a circle of annular steps, and the outer diameter of each annular step is equal to that of the corresponding switching section.
Furthermore, a pin hole is formed in the lower end face of the base.
Furthermore, the lower end surface of the base is provided with a through hole which penetrates through the upper end surface and the lower end surface of the base.
Furthermore, the switching section is the cylinder, and it has the ladder through-hole that runs through the cylinder upper and lower terminal surface to open along the axis direction of switching section, first internal thread section and second internal thread section set up ladder through-hole internal surface respectively, and it has a screw hole that runs through the switching section wall thickness to open on the switching section, and the screw hole is located first internal thread section department.
Furthermore, a hexagonal boss is arranged on the ejector rod bolt.
Further, at least one hole is formed in the circumferential side surface of the hexagonal boss.
Furthermore, a circular boss is arranged on the ejector rod bolt, and the outer diameter of the circular boss is larger than the hole diameter of an inner hole of an outer ring of the thrust bearing.
Further, a groove is formed in the supporting plane of the top plate, and the groove penetrates through the circumferential side surface of the top plate.
The invention has the following characteristics:
(1) jacking is realized through threads, and the jacking device is stable, reliable and easy to machine;
(2) because the thrust bearing is added, the jacking process of the jack is more labor-saving (the stress is changed in the rotating process), and when a heavy object is pressed on the top plate, the top plate does not need to rotate along with the rotation of the ejector rod bolt, so that the friction force between the heavy object and the top plate in the jacking process is reduced;
(3) the thrust bearing is arranged in an inner hole at the lower end of the top plate, and meanwhile, the surface of the circular boss on the ejector rod bolt is used as a closed end surface to seal the thrust bearing in the inner hole, so that on one hand, the influence of the external environment on the thrust bearing (such as the influence of sand and stone or dust) can be avoided, the thrust bearing is in a relatively sealed environment, on the other hand, the thrust bearing in the inner hole is more convenient to lubricate, lubricating grease is not easy to overflow, and the service life of the thrust bearing is prolonged;
(4) the two sections of threads on the switching section are designed, so that the jacking distance of the jack is greatly prolonged, and a two-section telescopic structure is formed, thereby not only facilitating the improvement of the jacking stroke, but also being easy to shrink and fold;
(5) the whole upper end surface of the top plate is a plane, and the plane is also provided with a groove, the shape of the groove can be designed according to the shape of the contact surface of the jacked weight (for example, when the jacked weight is an automobile, the groove can be designed according to the shape of an automobile chassis), so that the whole supporting plane is not damaged, and the special weight support can be adapted;
(6) the base is provided with a pin hole, so that the base can be conveniently fixed by a pin (particularly suitable for a relatively soft gravel road surface), and the situation that heavy objects fall due to the fact that the base is driven to rotate together in the rotating process of the rotating ejector rod bolt or the base displaces in the jacking process is prevented;
(7) the lower end face of the base is provided with a through hole penetrating through the upper end face and the lower end face of the base, and when the ejector rod bolt moves in the through hole, the phenomenon that the rotation resistance is increased due to the fact that large air pressure is formed due to good thread sealing performance is avoided, and the exhaust effect is achieved;
(8) the hexagonal boss is convenient to operate as a structure matched with a wrench, and when the wrench is not used, the hexagonal boss can rotate by taking the hole in the surface as an action point;
(9) the locking nail is used as a fixing structure to prevent the first internal thread section and the thread on the outer surface of the base from relatively rotating, so that a fixing effect is achieved;
(10) the outer surface of the base is provided with a circle of annular steps, and the step surfaces of the steps are used as supporting surfaces when the threads of the ejector rod are lowered to the lowest position.
The invention is mainly characterized in that a rotary lifting mode of multi-section thread combination is used, and the principle that the rotating force required by a bearing is small is adopted, the two are combined and applied to the jack, and the jack has the advantages of convenience in carrying, small occupied space, quickness in lifting, small rotating moment and the like.
Drawings
FIG. 1, FIG. 1-1 and FIG. 1-2 are schematic top plates;
FIG. 2 and FIG. 2-1 are schematic views of a jack bolt;
FIG. 3 is a schematic view of a transition section;
FIGS. 4 and 4-1 are schematic views of the base;
FIG. 5 is a schematic view of the jack after being assembled;
in the figure, 1 a top plate; 2, a thrust bearing; 3, a mandril bolt; 4, switching section; 5, a base; 6 locking the nail.
Detailed Description
The idea of the present invention is further described in detail below with reference to the drawings and examples of the specification.
The principle of the invention is that the lifting height is raised by utilizing the rotation of the screw thread, but the bearing structure is adopted, the lifting height and various operation structures are optimized, the lifting height can be easily raised by utilizing a spanner or a screwdriver, and the lifting stroke can be adjusted according to vehicle types with different supporting heights.
As shown in fig. 5, in this embodiment, the mechanical jack mainly includes 6 parts, the first is a top plate 1, the second is a thrust bearing 2, the third is a push rod bolt 3, the fourth is an adapting section 4, the fifth is a base 5, and the sixth is a locking nail 6, and the main functions and structural features of the parts are as follows:
top plate 1: as shown in fig. 1, 1-1 and 1-2, the top plate 1 is of a sleeve structure, and is provided with a groove which penetrates through the circumferential surface of the top plate 1 and is used for being buckled with a beam of an automobile and an inner hole at the lower end surface
The thrust bearing is used for assembling the thrust bearing 2, the size of the thrust bearing is processed according to the excircle of the matched bearing, and the thrust bearing is guaranteed to be assembled with the bearing by 0.01-0.05 interference fit.
The thrust bearing 2: the thrust bearing 2 is a single-row radial thrust ball bearing or a thrust ball bearing, belongs to a standard part, and can be directly purchased in the market.
Ejector bolt 3: as shown in figures 2 and 2-1, the ejector bolt 3 is formed by adding a bearing mounting table on the hexagonal end face of a general bolt, namely
The size of the excircle boss is processed according to the inner hole of the matched bearing, and the excircle boss is ensured to be assembled with the bearing by 0.01-0.05 interference fit,
the size is greater than the bearing outer ring inner hole, prevents that lubricating grease from falling out, and the screw length of M20X 2.5 is according to jack high altitude design, bores 3 through-holes on the side surface of hexagonal boss.
The switching section 4: referring to fig. 3, the adaptor section 4 is a double-threaded socket, M20 × 2.5 is the main lifting thread (second internal thread section), M36 × 4 is the adjusting elongated thread (first internal thread section) according to the use, and M6 is mainly the locking screw.
Base 5: as shown in fig. 4 and 4-1, the base 5 is a support and nut combination design, and the adaptor section 4 is rotated on the threads of the base 5 for jacking adjustment.
The locking nail 6: the part is a standard part and is commercially available as an M6 screw.
During manufacturing, the bearing is processed according to the dimensions of figures 1, 1-2, 2-1, 3, 4 and 4-1, the dimension A, B is processed according to the excircle and the inner hole of the bearing, the interference fit of 0.01-0.05 is guaranteed, and the height of C, D from the ground can be properly adjusted according to the low fit of different vehicle types. And selecting 45# hardening and tempering materials for the parts. In order to ensure the service life and long service time, the material is subjected to quenching and tempering heat treatment before processing. To prevent the jig from rusting, all surfaces except the bearing were flanged. Knurling can be carried out on the end face of the top plate 1 and the excircle of the switching section 4, so that the friction force is enhanced and the appearance is attractive.
The installation and use method comprises the following steps:
the general structure of the jack is as shown in fig. 5, wherein a top plate 1 is assembled on a supporting excircle of a thrust bearing 2, lubricating grease is coated on the bearing outer ring, an ejector rod bolt 3 is assembled in an inner hole of the thrust bearing 2, a switching section 4 is assembled on a base 5 and is assembled to the bottom, an M6 hole of the switching section 4 is aligned to a slotted hole on the base 5 and locked by a locking nail 6, and the ejector rod bolt 3 is screwed on the switching section 4 in a threaded manner.
When the automobile lifting device is used, an automobile is moved to a place where the ground is hard, the base 5 is placed on the ground, the groove of the jack top plate 1 is aligned with a supporting point of an automobile beam when the hexagonal boss is manually rotated, the hexagonal boss is rotated by the wrench until the automobile wheel is suspended (the screwdriver can be used for rotating a small hole of the hexagonal boss, and when the wrench or the screwdriver is not used in a journey, a section of steel bar or iron nail can be found to be rotatably lifted). When the car is used, the switching section 4 is assembled to the bottom of the base 5, when the SUV needs to increase the height, the locking nail 6 is loosened, the switching section 4 can be adjusted to increase the height, and then the ejector bolt 3 is adjusted to meet the required height. When the height of the base is required to be ultrahigh, hard objects (such as iron plates, wood plates, bricks and the like) can be padded under the base, so that the effect of adjusting the height can be achieved, and when the base is used, the hard objects and the ground have enough hardness, so that potential safety hazards are prevented.
Claims (10)
1. Mechanical type automobile jack, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the outer surface of the base (5) is provided with threads;
the connecting device comprises a connecting section (4), wherein a first internal thread section and a second internal thread section which are coaxial but have different major diameters are arranged on the connecting section (4), and the first internal thread section is in threaded connection with a base (5);
the screw section of the ejector rod bolt (3) is connected with the second internal thread section on the switching section (4);
the ejector pin bolt comprises a top plate (1), wherein the upper end face of the top plate (1) is a supporting plane, an inner hole is formed in the lower end face of the top plate (1), a thrust bearing (2) is arranged in the inner hole, and the thrust bearing (2) is connected with one end of an ejector pin bolt (3).
2. The mechanical jack of claim 1, wherein: a screw hole is formed in the outer surface of the base (5) in a threaded position, the axis of the screw hole is perpendicular to the axis of the base (5), and a locking nail (6) is detachably connected in the screw hole.
3. The mechanical jack of claim 1, wherein: the outer surface of the base (5) is provided with a circle of annular steps, and the outer diameter of each annular step is equal to that of the switching section (4).
4. The mechanical jack of claim 1, wherein: the lower end face of the base (5) is provided with a pin hole.
5. The mechanical jack of claim 1, wherein: the lower end face of the base (5) is provided with a through hole which penetrates through the upper end face and the lower end face of the base (5).
6. The mechanical jack of claim 1, wherein: the adapter coupling section (4) is a cylinder, a step through hole penetrating through the upper end face and the lower end face of the cylinder is formed in the axis direction of the adapter coupling section (4), the inner surfaces of the step through hole are respectively arranged on the first internal thread section and the second internal thread section, a threaded hole penetrating through the wall thickness of the adapter coupling section (4) is formed in the adapter coupling section (4), and the threaded hole is located at the first internal thread section.
7. The mechanical jack of claim 1, wherein: and a hexagonal boss is arranged on the ejector rod bolt (3).
8. The mechanical jack of claim 6, wherein: at least one hole is formed in the circumferential side surface of the hexagonal boss.
9. The mechanical jack of claim 1, wherein: and a circular boss is arranged on the ejector rod bolt (3), and the outer diameter of the circular boss is larger than the hole diameter of an inner hole of an outer ring of the thrust bearing (2).
10. The mechanical jack of claim 1, wherein: a groove is formed in the supporting plane of the top plate (1) and penetrates through the circumferential side surface of the top plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149263.8A CN110817727A (en) | 2019-11-21 | 2019-11-21 | Mechanical jack for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911149263.8A CN110817727A (en) | 2019-11-21 | 2019-11-21 | Mechanical jack for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110817727A true CN110817727A (en) | 2020-02-21 |
Family
ID=69557850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911149263.8A Pending CN110817727A (en) | 2019-11-21 | 2019-11-21 | Mechanical jack for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110817727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454211A (en) * | 2020-11-25 | 2021-03-09 | 安徽字母表工业设计有限公司 | Method for aligning and aligning threaded hole and through hole for production and assembly of vehicle tool |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2624495A1 (en) * | 1987-12-11 | 1989-06-16 | Bouche Michel | Leg or support pillar of the screw-jack type to support false floors, particularly of computer rooms |
| CN2719803Y (en) * | 2004-01-14 | 2005-08-24 | 刘智成 | Electric differential jack |
| CN102807173A (en) * | 2011-05-29 | 2012-12-05 | 胡新峰 | Novel spiral jack |
| CN202625723U (en) * | 2012-04-11 | 2012-12-26 | 湖北三江航天红阳机电有限公司 | Mechanical jack |
| CN103011007A (en) * | 2012-12-18 | 2013-04-03 | 南通市通润汽车零部件有限公司 | Fork shrinkage type screw jack |
| WO2018216354A1 (en) * | 2017-05-26 | 2018-11-29 | カネテック株式会社 | Jack |
-
2019
- 2019-11-21 CN CN201911149263.8A patent/CN110817727A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2624495A1 (en) * | 1987-12-11 | 1989-06-16 | Bouche Michel | Leg or support pillar of the screw-jack type to support false floors, particularly of computer rooms |
| CN2719803Y (en) * | 2004-01-14 | 2005-08-24 | 刘智成 | Electric differential jack |
| CN102807173A (en) * | 2011-05-29 | 2012-12-05 | 胡新峰 | Novel spiral jack |
| CN202625723U (en) * | 2012-04-11 | 2012-12-26 | 湖北三江航天红阳机电有限公司 | Mechanical jack |
| CN103011007A (en) * | 2012-12-18 | 2013-04-03 | 南通市通润汽车零部件有限公司 | Fork shrinkage type screw jack |
| WO2018216354A1 (en) * | 2017-05-26 | 2018-11-29 | カネテック株式会社 | Jack |
Non-Patent Citations (1)
| Title |
|---|
| 张树海: "《起重机运输设备选用与维护》", 31 January 2013 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112454211A (en) * | 2020-11-25 | 2021-03-09 | 安徽字母表工业设计有限公司 | Method for aligning and aligning threaded hole and through hole for production and assembly of vehicle tool |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |