CN201442574U - Semi-trailer support leg - Google Patents
Semi-trailer support leg Download PDFInfo
- Publication number
- CN201442574U CN201442574U CN2009200298778U CN200920029877U CN201442574U CN 201442574 U CN201442574 U CN 201442574U CN 2009200298778 U CN2009200298778 U CN 2009200298778U CN 200920029877 U CN200920029877 U CN 200920029877U CN 201442574 U CN201442574 U CN 201442574U
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- China
- Prior art keywords
- leg
- screw
- lifting
- semi
- bearing
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- 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.)
- Expired - Fee Related
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- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The utility model relates to a semi-trailer component, in particular to a semi-trailer support leg, which comprises an outer leg, a lifting inner leg and a lead screw, wherein the lifting inner leg can extend up and down in the outer leg, and the lead screw is used for connecting the outer leg and the lifting inner leg. The utility model is characterized in that the lower end of the lifting inner leg is connected with a folding ground foot, the lead screw is respectively clamped and connected with a screw nut and a ball bearing, the screw nut is fixed in the lifting inner leg, the ball bearing is arranged on a bearing seat at the inner side of the outer leg, the upper end of the lead screw is provided with a worm wheel, the worm wheel is fixed to the ball bearing at the top and the bottom through locking screw nuts, and one side of the worm wheel is provided with a worm shaft. The utility model has the advantages of compact structure, few transmission components, low manufacture cost, small welding deformation, convenient manufacture and assembly and high precision.
Description
(1) technical field
The utility model relates to a kind of superimposed trailer parts, particularly a kind of semi-trailer support.
(2) background technology
The outside at superimposed trailer leading portion left and right sides side bar is equipped with movable supporting legs usually, assisting to support superimposed trailer when handling goods or the parking maintenance, and can regulate the height of superimposed trailer according to the actual height of the traction seat of various tractor trucks.These movable supporting legs generally should be contracted in the superimposed trailer driving process, thereby failure-free avoids movable supporting legs to contact with ground, prevents to bring out safety misadventure.
The semi-trailer support of widespread use is generally finished deceleration by 7 gears on the market now.The transmission chain length, the manufacturing cost height, the manufacturing difficulty, each transmission shaft supports and adopts steel bushing welding, and deflection is big, and alerting ability does not guarantee.
(3) summary of the invention
The utility model is in order to remedy the deficiencies in the prior art, and a kind of semi-trailer support of simple and reasonable, flexible operation is provided.
The utility model is achieved by the following technical solution:
A kind of semi-trailer support, leg and connect outer leg and the leading screw of the interior leg of lifting in the lifting that comprise outer leg, can stretch outside in the leg up and down, it is characterized in that: the lower end of leg is connected with folding lower margin in the lifting, leading screw respectively be fixed on the screw in the leg in the lifting and be installed in ball-bearing casing clamping on the outer inboard leg bearing seat, the leading screw upper end is equipped with the worm gear that worm screw is arranged by jam nut and the fixing up and down end of ball-bearing casing.
Be fixed with the connecting panel that the surface is provided with screw hole on the relative position of outer leg outer side described in the utility model.
Bearing seat described in the utility model lower end is provided with the pressure axis bearing that surface bearing is installed around leading screw.
Operation by worm screw makes the worm gear rotation, thereby drives the leading screw rotation, make in the lifting with the leading screw clamping screw in the leg up and down spiral move, drive with the fixing lifting of screw in leg flexible up and down; The folding lower margin that the leg lower end is connecting in the lifting does not contact with ground when leg is upwards flexible in lifting, and at this moment convenient folding lower margin is upwards turned up, and has simplified the flexible scope of leg in the lifting, acts freely, and has saved non-cutting time.In the utility model, screw adopts high-strength wear-resisting ductile iron and lock pressure technology, and light wear-resisting, intensity is reliable.
The ball-bearing casing of outer inboard leg and leading screw clamping are felt relieved to leading screw, and support from two ends to worm gear and worm screw, and bearing seat is processed entirely, centering precision height when welding is installed.
Fixing connecting panel on the relative position of outer leg outer side, leaving screw hole on the connecting panel, can connecting panel and car body are being fixed together by holding screw is installed.
Install a surface bearing additional in the bearing seat lower end, when around leading screw leading screw further being felt relieved, surface bearing is mainly used in the axial load that bears supporting leg, reduces the damage rate of parts, prolongs the service life of supporting leg.
Outer leg described in the utility model upper end is fixed with the worm gear reducer casing that hides worm gear and leading screw, and worm screw stretches out the worm gear reducer casing.The worm gear reducer casing is welded on outer leg upper end, and worm gear and leading screw are hidden with dustproof, grease is housed in the casing reduces worm gear and worm screw wearing and tearing minimizing working resistance, and worm screw stretches out the worm gear reducer casing, is convenient to worm screw is operated.
In folding lower margin described in the utility model and the lifting on the leg the corresponding fixed plate of installing make folding lower margin when upwards turning up, the state of laying that will fold lower margin by fixed block is fixed, and prevents to fix because of folding lower margin not firm advancing of car body to be caused puzzlement.
The shape of leg can be provided with according to concrete operational circumstances in outer leg and the lifting, is as the criterion with easy to operate, adopts the form of square tube in this utility model.
In the utility model, leg welding lock is pressed into one in screw and the lifting, and bearing seat is that welding two square plates in thick-walled pipe outside form, and with outer leg solder together, outer leg again with the connecting panel solder together.Worm gear reducer casing and outer leg weld together, worm screw stretches out the worm gear reducer casing.Like this, outer leg, worm gear reducer casing, connecting panel, bearing seat all are one during work, and they are fastened on the car body by the screw on the connecting panel.Shake worm screw drive worm gear during work and rotate, thereby drive the leading screw rotation, leading screw drives screw and moves up and down together with leg in the lifting, owing to the lifting square tube is sleeved in the outer square tube, can only move up and down, and can not rotate, thereby jack-up and the folding and unfolding of having finished supporting leg is moved.
The utility model has following obvious advantage:
(1) compact conformation, Transmission is few, low cost of manufacture, welding deformation amount is few, make easy to assembly, the precision height;
(2) speed ratio is big, and all adopts ball-bearing casing and high-strength wear-resisting ductile iron screw, and hoisting force is big, light and flexible;
(3) lower margin can be turned up, and is swift and convenient to operate.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a partial cutaway schematic of the present utility model.
Among the figure, 1 screw, 2 pressure axis bearings, 3 surface bearings, 4 bearing seats, 5 ball-bearing casings, 6 leading screws, 7 jam nuts, 8 worm gears, 9 worm screws, 10 connecting panels, 11 outer legs, leg in 12 liftings, 13 screw holes, 14 folding lower margins, 15 worm gear reducer casings, 16 fixed blocks.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.Leg 12 and connect outer leg 11 and the leading screw 6 of the interior leg 12 of lifting in the liftings that this embodiment comprises outer leg 11, can stretch up and down in the leg 11 outside, it is characterized in that: the lower end of leg 12 is connected with folding lower margin 14 in the lifting, leading screw 6 respectively be fixed on the screw 1 in the leg in the lifting 12 and be installed in ball-bearing casing 5 clampings on the outer leg 11 inner shafts bearings 4, leading screw 6 upper ends are equipped with the worm gear 8 that a side of fixing up and down by jam nut 7 and ball-bearing casing 5 has worm screw 9; Be fixed with the connecting panel 10 that the surface is provided with screw hole 13 on the relative position in described outer leg 11 outsides; Described bearing seat 4 lower ends are provided with the pressure axis bearing 2 that surface bearing 3 is installed around leading screw 6; Described outer leg 11 upper ends are fixed with the worm gear reducer casing 15 that hides worm gear 8 and leading screw 6, and worm screw 9 stretches out worm gear reducer casing 15; Correspondence is equipped with fixed block 16 on the interior leg 12 of described folding lower margin 14 and lifting; Leg 12 is square tube in described outer leg 11 and the lifting.
Screw is installed in the screw hole 13 on connecting panel 10, supporting leg and car body are fastenedly connected.
When needs shrink supporting leg, shake worm screw 9 and make worm gear 8 rotations, thereby drive leading screw 6 rotations, the screw of fixing on the leg 12 in the lifting 1 passes through the screw thread clamping with leading screw 6, the rotation of leading screw 6 makes the interior leg 12 of screw 1 related lifting with its rotation, because leg 12 only can stretch up and down in the tight package action to leg in the lifting 12 of outer leg 11, lifting, and there is not the sway phenomenon to take place.
Along with moving up of leg in the lifting 12, folding lower margin 14 is liftoff, when the inclination that reaches folding lower margin 14 when ground clearance does not contact with ground, upwards folding lower margin 14, and will fold lower margin 14 by the corresponding fixed block of installing 16 on the leg 12 in folding lower margin 14 and the lifting and fix, treat in the lifting that leg 12 is contracted at utmost or when being contracted to the operation that no longer influences car body, supporting leg shrinks to be finished.
When needs are laid supporting leg, will fold lower margin 14 earlier and put down, shake worm screw 9 again and make worm gear 8 rotations, make in the screw 1 related lifting leg 12 with its rotation by the rotation that drives leading screw 6, reach the purpose of downward stretching, extension, until folding lower margin 14 kiss the earths, can be with till the car body jack-up.
Claims (6)
1. semi-trailer support, comprise outer leg (11), the interior leg (12) of the interior lifting that can stretch up and down of leg (11) outside and the leading screw (6) that connects leg (12) in outer leg (11) and the lifting, it is characterized in that: the lower end of leg (12) is connected with folding lower margin (14) in the lifting, leading screw (6) respectively be fixed on the screw (1) in the leg in the lifting (12) and be installed in ball-bearing casing (5) clamping on outer leg (11) the inner shafts bearing (4), leading screw (6) upper end is equipped with the worm gear (8) that a side of fixing up and down by jam nut (7) and ball-bearing casing (5) has worm screw (9).
2. semi-trailer support according to claim 1 is characterized in that: be fixed with the connecting panel (10) that the surface is provided with screw hole (13) on the relative position in described outer leg (11) outside.
3. semi-trailer support according to claim 1 is characterized in that: described bearing seat (4) lower end is provided with the pressure axis bearing (2) that surface bearing (3) is installed around leading screw (6).
4. semi-trailer support according to claim 1 is characterized in that: described outer leg (11) upper end is fixed with the worm gear reducer casing (15) that hides worm gear (8) and leading screw (6), and worm screw (9) stretches out worm gear reducer casing (15).
5. semi-trailer support according to claim 1 is characterized in that: leg (12) is gone up correspondence fixed block (16) is installed in described folding lower margin (14) and the lifting.
6. semi-trailer support according to claim 1 is characterized in that: leg (12) is square tube in described outer leg (11) and the lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200298778U CN201442574U (en) | 2009-07-21 | 2009-07-21 | Semi-trailer support leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200298778U CN201442574U (en) | 2009-07-21 | 2009-07-21 | Semi-trailer support leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201442574U true CN201442574U (en) | 2010-04-28 |
Family
ID=42547249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200298778U Expired - Fee Related CN201442574U (en) | 2009-07-21 | 2009-07-21 | Semi-trailer support leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201442574U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015509A (en) * | 2014-04-23 | 2015-11-04 | 苏州华电电气股份有限公司 | Gravity pendulum type supporting leg for vehicle-mounted hydraulic tail plate |
-
2009
- 2009-07-21 CN CN2009200298778U patent/CN201442574U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015509A (en) * | 2014-04-23 | 2015-11-04 | 苏州华电电气股份有限公司 | Gravity pendulum type supporting leg for vehicle-mounted hydraulic tail plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20100721 |