CN101168363A - Semitrailer support - Google Patents
Semitrailer support Download PDFInfo
- Publication number
- CN101168363A CN101168363A CNA2007100316748A CN200710031674A CN101168363A CN 101168363 A CN101168363 A CN 101168363A CN A2007100316748 A CNA2007100316748 A CN A2007100316748A CN 200710031674 A CN200710031674 A CN 200710031674A CN 101168363 A CN101168363 A CN 101168363A
- Authority
- CN
- China
- Prior art keywords
- nut
- semi
- leg
- reinforced rib
- trailer support
- 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
Images
Landscapes
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
A leg of semi-trailer comprises an inner leg which can extend up and down, and an outer leg fixed at two sides of the front portion of semi-trailer, wherein the inner and outer legs are connected via a lead screw and a nut, a screw hole at center of the nut is communicated with an oil groove at upper portion, the nut is square with at least two layers arranged with strengthening ribs between, the upper layer of the nut is provided with a transition slope at center of which the oil groove in bucket shape is arranged, the strengthening rib is triangle, of which one edge is connected with the lower layer of the nut and another edge is connected with the middle of the nut. The invention sets the nut as square with at least two layers, to keep working stability of the nut and improve rotation torque resistance, thereby improving the lifting ability of the leg, and the invention sets the strengthening ribs to reduce the thickness of lower layer and middle cylinder, reduce nut weight, and keep the strength and rigidity of the nut, thereby prolonging the service life of the leg.
Description
Technical field
The present invention relates to a kind of superimposed trailer, particularly a kind of semi-trailer support.
Background technology
Under the side bar of the left and right sides of chassis of semi-trailer, be furnished with movable supporting legs usually, assisting the supporting 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 avoid movable supporting legs to contact with ground reliably, bring out safety misadventure.
Our company discloses a kind of superimposed trailer bearing set in Chinese patent literature CN2384840Y, comprise the left and right supporting leg and the intermediate connecting shaft thereof that can be installed in the superimposed trailer front end, the two-speed gear transmission device is characterized in that described supporting leg is closed inside and outside sleeve structure; The lifting screw of inner sleeve is provided with micro-adjusting mechanism, with eliminate internal and external casing in lifting process because of the excessive offset loading force that produces of two axial lines angle.Square, circular or polygon abnormity that the cross-sectional plane of supporting leg internal and external casing is generally.Micro-adjusting mechanism is the Ball faced nut that is arranged on the loading plate of inner sleeve top, and it can realize the rotation of moving of certain distance and certain angle on loading plate.The feed screw nut of this structure is running into superimposed trailer not at ordinary times, screw mandrel still can move freely in nut, can do not blocked by nut, but, because the feed screw nut is a single layer structure, when it rotates, has only two corners of individual layer to contact with the square tube inwall after the carrying, other positions of nut unsettled (or holder is empty), vibrate easily, job insecurity is not because the axis of screw mandrel and nut overlaps, so the effective ingear thread of this feed screw nut number reduces, suffered moment of flexure of screw thread and shearing all increase, and through facts have proved: its screw thread is easy to generate distortion, make between screw mandrel and the nut occur stuck, reduce the jacking capacity of supporting leg, directly influence its service life.
Summary of the invention
Technical matters to be solved by this invention be to provide a kind of simple and reasonable, cost of manufacture is low, carrying back working stability, jacking capacity height, capacity operation flexibly, the semi-trailer support of long service life, to overcome the weak point in original traditional design technology.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of semi-trailer support, interior leg that comprising upper and lowerly to contract stretches and the outer leg that is fixed on the superimposed trailer front part sides, be connected with nut by screw mandrel between the inside and outside leg, the tapped bore of nut central authorities and the oil storage grooves on its top are connected; Its architectural feature is that nut is two layers or more square structure, is provided with reinforced rib between layer and the layer.
Be provided with the transition inclined-plane in the upper strata of described nut, oil storage grooves is positioned at transition inclined-plane central authorities, and oil storage grooves is funnel-form.
Described reinforced rib is a triangle, and it joins with the lower floor of nut on one side, and another side and nut middle part join; Or reinforced rib is quadrangle, and its top and bottom ends joins with the upper and lower of nut respectively, and its middle part joins with the column middle part of nut.Reinforced rib is four to 12, and hoop and symmetry are uniform.
Leg is a square tube in described, and nut is arranged in the square tube, and its edge is provided with corner cut or circular arc, and reinforced rib is relative with corner cut or arc position.
The upper and lower layer of the described nut length of side equates.The lower floor bottom surface of nut is the plane, transmitted load.
A kind of semi-trailer support, comprise the nut in the leg in being arranged on, its architectural feature is that nut is two layers or more square structure, be provided with reinforced rib between layer and the layer, the lower floor of nut sits and is pressed on the loading plate, and the position of the corresponding loading plate of interior leg sidewall is provided with one and above bar hole.
Described bar hole be two and more than, on the leg sidewall, loading plate connects as one by plug welding and interior square tube in being symmetricly set on.
Leg is a square tube in described, and nut is quadrangle, and its lower floor bottom surface is the plane; Reinforced rib is a triangle, and it joins with feed screw nut's lower floor on one side, and another side and nut middle part join; Or reinforced rib is quadrangle, and its top and bottom ends joins with the upper and lower of nut respectively, and its middle part joins with the column middle part of nut; The nut edge is provided with corner cut or circular arc, and reinforced rib is relative with corner cut or arc position.
The present invention's nut is set to two layers or more square structure, when increasing it and rotating and interior leg, be the contact point of square tube: the corner of the upper and lower two-layer many places of nut contacts with the square tube inwall simultaneously, when screw mandrel rotates, its working stability, the effective ingear thread of screw mandrel and nut number is many, so can effectively improve its bending resistance and resistance to shear, prove through test of many times: the screw thread of this nut is stressed evenly, indeformable behind the long-term load, at full load, screw mandrel rotate freely in nut, increase the jacking capacity of supporting leg significantly; In the reinforced rib that is provided with between the upper and lower layer, both can effectively reduce the wall thickness of lower floor's thickness of slab and middle part cylinder, can effectively alleviate the weight of whole nut again, and bulk strength and rigidity that can retention nut, prolong the service life of supporting leg.
The present invention is provided with funnelform oil storage grooves in the upper strata of nut, when screw mandrel rotates, lubricating oil can enter between the thread of screw mandrel and nut in this oil storage grooves smoothly, carry out lubricated fully, when lubricating oil is too much, can temporarily be stored in this oil storage grooves again, semi-trailer support is as compared with the past more economized on oil, and removed the oil tube in the supporting leg in the past, reduced cost of manufacture.
The present invention is simple and reasonable, cost of manufacture is low, flexible operation.
Description of drawings
Fig. 1 is the main TV structure scheme drawing of first embodiment of the invention.
Fig. 2 is the plan structure scheme drawing of Fig. 1.
Fig. 3 is the A-A sectional structure scheme drawing among Fig. 2.
Fig. 4 is the perspective view of first embodiment of the invention.
Fig. 5 is the running condition structural representation of first embodiment of the invention.
Fig. 6 looks the local structure scheme drawing for the left side of Fig. 5.
Fig. 7 is the main TV structure scheme drawing of second embodiment of the invention.
Fig. 8 is the plan structure scheme drawing of Fig. 7.
Fig. 9 is the B-B sectional structure scheme drawing of Fig. 8.
Figure 10 is the perspective view of second embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Among the figure: 1 is first feed screw nut's upper strata, and 1.1 are the transition inclined-plane, and 1.2 is first oil storage grooves, 2 is first reinforced rib, and 3 is first feed screw nut's lower floor, and 4 is tapped bore, 5 is screw mandrel, and 6 is cover plate, and 7 is loading plate, 8 is interior square tube, 8.1 be bar hole, 21 is second feed screw nut's upper strata, 21.1 is second oil storage grooves, 22 is second feed screw nut's lower floor, and 23 is second reinforced rib.
First embodiment
Referring to Fig. 1-Fig. 6, first nut in this semi-trailer support is upper and lower two layers square structure, is provided with first reinforced rib 2 between upper strata 1 and the lower floor 3.Tapped bore 4 is arranged on central authorities, is provided with transition inclined-plane 1.1, the first oil storage grooves 1.2 in the upper strata 1 of first nut and is positioned at transition inclined-plane central authorities, and first oil storage grooves is funnel-form, and first oil storage grooves and tapped bore 4 communicate; First reinforced rib is four, rectangular triangle, and hoop is uniform, and over against four corner cuts, the lower floor of an one square edge and first nut joins, and another square edge and first nut middle part cylinder join.First nut is arranged in the square tube 8, and its position, four angles is respectively arranged with corner cut.The bottom surface of the first nut lower floor 2 is the plane.
Whole first nut is sat by its lower floor on the loading plate 7 that is pressed in the interior leg, and the position of the corresponding loading plate of square tube sidewall is provided with four bar holes 8.1, and this bar hole is symmetricly set on the four avris walls of square tube, and loading plate connects as one by plug welding and square tube.
Second embodiment
Referring to Fig. 7-Figure 10, second reinforced rib 23 is quadrangle, upper strata 21 bottom connections of its top margin and second nut, and lower floor 22 tops of its base and second nut join, and the column part at the middle part of its inner side edge and second nut joins.In the leg square tube 8, its four jiaos of positions were provided with circular arc in second nut was arranged on, and second reinforced rib 23 is eight, and hoop is uniform, and wherein, four second reinforced ribs are over against four circular arcs.
All the other are not stated part and see first embodiment, no longer repeat.
Claims (10)
1. semi-trailer support, the interior leg that comprising upper and lowerly to contract stretches and be fixed on the outer leg of superimposed trailer front part sides is connected with nut by screw mandrel between the inside and outside leg, and the oil storage grooves on the tapped bore of nut central authorities (4) and its top is connected; It is characterized in that nut is two layers or more square structure, be provided with reinforced rib between layer and the layer.
2. semi-trailer support according to claim 1 is characterized in that being provided with funnelform oil storage grooves in the upper strata of described nut.
3. semi-trailer support according to claim 2 is characterized in that being provided with the transition inclined-plane in the upper strata of described nut, and oil storage grooves is positioned at transition inclined-plane central authorities.
4. semi-trailer support according to claim 2 is characterized in that described reinforced rib is a triangle, and it joins with the lower floor of nut on one side, and another side and nut middle part join; Or reinforced rib is quadrangle, and its top and bottom ends joins with the upper and lower of nut respectively, and its middle part joins with the column middle part of nut.
5. semi-trailer support according to claim 4 is characterized in that described reinforced rib is four to 12, and hoop and symmetry are uniform.
6. semi-trailer support according to claim 5 is characterized in that described interior leg is square tube (8), and nut is arranged in the square tube, and its edge is provided with corner cut or circular arc, and reinforced rib is relative with corner cut or arc position.
7. semi-trailer support according to claim 6 is characterized in that the upper and lower layer of the described nut length of side equates; The bottom surface of the lower floor of nut is the plane of transmitted load.
8. semi-trailer support, comprise the nut in the leg in being arranged on, it is characterized in that nut is two layers or more structure, be provided with reinforced rib between layer and the layer, the lower floor of nut sits and is pressed on the loading plate (7), and the position of the corresponding loading plate of interior leg sidewall is provided with one and above bar hole (8.1).
9. semi-trailer support according to claim 8, feature be described bar hole (8.1) be two and more than, on the leg sidewall, loading plate (7) connects as one by plug welding and interior square tube in being symmetricly set on.
10. semi-trailer support according to claim 8, feature are that described interior leg is square tube (8), and nut is quadrangle, and its lower floor bottom surface is the plane; Reinforced rib is a triangle, and it joins with the lower floor of nut on one side, and another side and nut middle part join; Or reinforced rib is quadrangle, and its top and bottom ends joins with the upper and lower of nut respectively, and its middle part joins with the column middle part of nut; The nut edge is provided with corner cut or circular arc, and reinforced rib is relative with corner cut or arc position.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100316748A CN101168363A (en) | 2007-11-21 | 2007-11-21 | Semitrailer support |
| PCT/CN2008/001010 WO2009065288A1 (en) | 2007-11-21 | 2008-05-23 | A semi-trailer support loading nut |
| EP08748531.4A EP2223830A4 (en) | 2007-11-21 | 2008-05-23 | A semi-trailer support loading nut |
| US12/744,153 US8622677B2 (en) | 2007-11-21 | 2008-05-23 | Semi-trailer support loading nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100316748A CN101168363A (en) | 2007-11-21 | 2007-11-21 | Semitrailer support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101168363A true CN101168363A (en) | 2008-04-30 |
Family
ID=39389167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100316748A Pending CN101168363A (en) | 2007-11-21 | 2007-11-21 | Semitrailer support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101168363A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065288A1 (en) * | 2007-11-21 | 2009-05-28 | Guangdong Fuwa Engineering Manufacturing Co., Ltd. | A semi-trailer support loading nut |
| CN101269654B (en) * | 2008-04-29 | 2011-05-11 | 广东富华工程机械制造有限公司 | Semi-trailer support bearing screwed cap |
| CN106167103A (en) * | 2015-05-19 | 2016-11-30 | 古德里奇公司 | For strengthening the molding inserts of pull-out strength |
-
2007
- 2007-11-21 CN CNA2007100316748A patent/CN101168363A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065288A1 (en) * | 2007-11-21 | 2009-05-28 | Guangdong Fuwa Engineering Manufacturing Co., Ltd. | A semi-trailer support loading nut |
| US8622677B2 (en) | 2007-11-21 | 2014-01-07 | Guangdong Fuwa Engineering Manufacturing Co., Ltd. | Semi-trailer support loading nut |
| CN101269654B (en) * | 2008-04-29 | 2011-05-11 | 广东富华工程机械制造有限公司 | Semi-trailer support bearing screwed cap |
| CN106167103A (en) * | 2015-05-19 | 2016-11-30 | 古德里奇公司 | For strengthening the molding inserts of pull-out strength |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8622677B2 (en) | Semi-trailer support loading nut | |
| CN1040858C (en) | Landing gear for semitrailers | |
| CN100434352C (en) | Mobile device for movable type heavy vehicle lifter | |
| CN201751218U (en) | Shock absorbing balance wheel for forklifts | |
| CN101168363A (en) | Semitrailer support | |
| CN201105721Y (en) | Trailer jack | |
| CN201713276U (en) | Telescopic handler | |
| CN110422238A (en) | A kind of big compartment damping device of refitted car | |
| CN103043565A (en) | Telescopic handler | |
| CN102588381B (en) | Telescopic hydraulic cylinder | |
| CN105636840B (en) | For the support for the change in location for supporting and compensating the semi-trailer parked | |
| CN101269654B (en) | Semi-trailer support bearing screwed cap | |
| KR101223956B1 (en) | The multistage screw feeder | |
| CN202641660U (en) | Landing leg | |
| JP4993525B2 (en) | forklift | |
| CN201279715Y (en) | Grinding disc lifting mechanism of flour milling machine for crystal ball | |
| CN201021309Y (en) | Steering mechanism for flat car | |
| CN206157730U (en) | Blank pressing stake machine | |
| CN111648422B (en) | Miniature oil-electricity hybrid four-wheel-drive loader | |
| CN216949734U (en) | Movable granary | |
| CN221253820U (en) | Self-adaptive walking platform and lifting vehicle | |
| CN2868976Y (en) | Electric jack | |
| CN212242835U (en) | Agricultural machine vehicle body chassis with steering driving lifting function | |
| CN218598521U (en) | Swing hydraulic cylinder for forklift | |
| CN103241686A (en) | Rotatable lifting appliance special for forklift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |