CN202169896U - Tailboard lifting mechanism utilizing non-parallelogram four-rod mechanism - Google Patents
Tailboard lifting mechanism utilizing non-parallelogram four-rod mechanism Download PDFInfo
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- CN202169896U CN202169896U CN2011202805562U CN201120280556U CN202169896U CN 202169896 U CN202169896 U CN 202169896U CN 2011202805562 U CN2011202805562 U CN 2011202805562U CN 201120280556 U CN201120280556 U CN 201120280556U CN 202169896 U CN202169896 U CN 202169896U
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- platform
- tailboard
- oil cylinder
- parallelogram
- frame
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Abstract
The utility model provides a tailboard lifting mechanism utilizing a non-parallelogram four-rod mechanism, which comprises a frame, a lifting arm, a door closing cylinder, a lifting cylinder and a platform. The frame, the lifting arm, the door closing cylinder and the platform form the non-parallelogram four-rod mechanism. By the aid of the non-parallelogram four-rod mechanism, the tailboard platform starts to lower the head gradually while descends, and a tip of the tailboard touches the ground until the rear end of the tailboard platform touches the ground. On the contrary, the tailboard platform slowly raises the head while ascends, and the tailboard surface is in the horizontal state when the tailboard platform ascends in place. The tailboard lifting mechanism utilizing the non-parallelogram four-rod mechanism has the structural advantages that some auxiliary components such as sequential cylinders added to a traditional parallelogram four-rod mechanism and used for meeting automatic head lowering of the tailboard are avoided, structure is simplified, the tailboard is integrally lighter and cost is lower.
Description
Technical field
The utility model relates to a kind of lifting device of tailgate, relates in particular to a kind of tailgate lifting mechanism that uses non-parallel quadrangle four-bar mechanism.
Background technology
The tradition tailgate all is the principle that adopts the parallelogram four-bar mechanism; Thereby the platform of guaranteeing tailgate can keep flat-hand position all the time in lifting process; And after platform drops to its root and contacts to earth; Through the low head mechanism of tailgate, the inclination that the automatic length that changes the oil cylinder of closing the door is come implementation platform is contacted to earth the plate point again.Otherwise under platform contacted to earth situation fully, the new line mechanism through tailgate came back flat-bed plate point earlier and transfers to level, made platform keep the flat-hand position lifting that makes progress again.Like Fig. 1, Fig. 2, shown in Figure 3:
The defective part of prior art is following:
1, adopt the tailgate of parallelogram four-bar mechanism, the action that its flat-bed plate point contacts to earth must realize through the close the door length of oil cylinder of change.
2, change the method for the length of the oil cylinder of closing the door, a kind of is the electromagnetic valve that can directly open the oil cylinder of closing the door, though simple in structure, operation inconvenience needs to increase control button, and the action of contacting to earth of plate point is steady inadequately.
Another kind is an increase order cylinder in hydraulic efficiency pressure system, and the tailgate Platform Implementation is bowed automatically.(key can be realized the decline of tailgate, and the contact to earth action of bowing of back plate point of platform root) though simple to operate, the plate point contacts to earth also very steady, complex structure, cost height.
The utility model content
The utility model provides a kind of tailgate lifting mechanism that uses non-parallel quadrangle four-bar mechanism for solving the problems of the technologies described above.
The utility model realizes that the technical scheme that the utility model purpose adopts is:
A kind of tailgate lifting mechanism that uses non-parallel quadrangle four-bar mechanism; It comprises frame (1), lift arm (2), the oil cylinder of closing the door (3), elevating ram (4) and platform (5); The rear end of said lift arm (2) adopts pivot pin to be connected with said frame (1); The rear end of the said oil cylinder of closing the door (3) adopts pivot pin to be connected with said frame (1), and the rear end of said elevating ram (4) adopts pivot pin to be connected with said frame (1), and the front end of said lift arm (2) adopts pivot pin to be connected with said platform (5); The front end of the said oil cylinder of closing the door (3) adopts pivot pin to be connected with said platform (5), and the front end of said elevating ram (4) adopts pivot pin to be connected with said lift arm (2) front end; Said frame (1), said lift arm (2), the said oil cylinder of closing the door (3) and said platform (5) four constitute a non-parallel tetragonal four-bar mechanism.
Tetragonal all unequal to edge lengths, said frame (1) otic placode pitch-row 54mm; Following hole site reach 8mm; The long 520mm of said lift arm (2); The otic placode pitch-row of said platform (5) is 60mm; The said oil cylinder of closing the door (3) usable length 510mm, the employing internal diameter of cylinder is 50mm, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 85mm, and rodless cavity is an oil suction chamber; It is 50mm that said elevating ram (4) adopts internal diameter of cylinder, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 125mm, and rodless cavity is an oil suction chamber.
As shown in Figure 5.When platform (5) under the horizontal situation that lifting puts in place, when descending with the withdrawal of elevating ram (4), platform (5) is slowly low head status, when contact to earth in the rear end of platform (5), the plate point is also fitted with ground, the plate face of platform (5) is inclined.As shown in Figure 6.
Or when platform (5) under the situation of contacting to earth of bowing, with elevating ram (4) stretch out and lifting the time, platform (5) is slow new line state, to platform (5) when lifting puts in place, the plate face of platform (5) is the level of state.
The difference of the utility model and prior art is: the four-bar mechanism of prior art tailgate is the parallelogram four-bar mechanism; The platform of tailgate can keep flat-hand position all the time in lifting process; And after platform drops to its root and contacts to earth; Low head mechanism through tailgate again changes the inclination that the length of the oil cylinder of closing the door is come implementation platform, and the plate point is contacted to earth.Or under platform contacted to earth situation fully, the new line mechanism through tailgate came back platform earlier and transfers to level, made platform keep the flat-hand position lifting that makes progress again.
And the structure design that the utility model adopts; Be that four-bar linkage design is become non-parallel tetragonal, the tailgate platform is when descending like this, and platform just begins progressively to bow thereupon; When tailgate flat-bed rear end contacted with ground, flat-bed plate point had also been accomplished and has been contacted to earth.Otherwise, when the platform of tailgate in lifting, platform is slow new line state, to when platform raising puts in place, flat-bed plate face is the level of state
The non-parallel quadrangle four-bar mechanism constructional feature that the utility model adopts.Avoided traditional parallel four limit row four-bar mechanisms for satisfying tailgate some appurtenances such as increase order cylinder of bowing automatically, simplified the structure, made the tailgate total quality become lighter, cost is more economical.
Description of drawings
The horizontal jacking condition structural representation of platform of Fig. 1, existing tailgate;
The platform root of Fig. 2, the existing tailgate status architecture scheme drawing that contacts to earth;
The landing slab point of Fig. 3, the existing tailgate status architecture scheme drawing that contacts to earth;
Fig. 4, the utility model example structure scheme drawing;
Fig. 5, the utility model embodiment lifting status architecture scheme drawing;
Fig. 6, the utility model embodiment status architecture scheme drawing that contacts to earth.
The specific embodiment
The embodiment of the utility model such as Fig. 4, Fig. 5, shown in Figure 6.The rod member size of non-parallel quadrangle four-bar mechanism is as shown in the figure.Tetragonal all unequal to edge lengths.
Frame (1) adopts square tube to process otic placode pitch-row 54mm; Following hole site reach 8mm.
The long 520mm of lift arm (2); The otic placode pitch-row of platform (5) is 60mm.
Oil cylinder (3) the usable length 510mm that closes the door, the employing internal diameter of cylinder is 50mm, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 85mm, and rodless cavity is an oil suction chamber;
It is 50mm that elevating ram (4) adopts internal diameter of cylinder, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 125mm, and rodless cavity is an oil suction chamber;
The maximum lifting height 720mm of mechanism, load-carrying capacity: 500Kg; Lifting adopts hydraulic efficiency pressure system to drive, and descends to then driving with the platform deadweight, need not power.The switch door is with the flexible realization of the oil cylinder of closing the door, and flat-bed is bowed and accomplished automatically by four-bar mechanism.Simply, light.
What should explain at last is: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, it will be understood by those of skill in the art that still and can make amendment or be equal to replacement the utility model although this specification sheets has carried out detailed explanation with reference to each above-mentioned embodiment to the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and the scope of the utility model, and it all should be encompassed in the claim scope of the utility model.
Claims (2)
- One kind the utilization non-parallel quadrangle four-bar mechanism the tailgate lifting mechanism; It comprises frame (1), lift arm (2), the oil cylinder of closing the door (3), elevating ram (4) and platform (5); The rear end of said lift arm (2) adopts pivot pin to be connected with said frame (1); The rear end of the said oil cylinder of closing the door (3) adopts pivot pin to be connected with said frame (1), and the rear end of said elevating ram (4) adopts pivot pin to be connected with said frame (1), and the front end of said lift arm (2) adopts pivot pin to be connected with said platform (5); The front end of the said oil cylinder of closing the door (3) adopts pivot pin to be connected with said platform (5), and the front end of said elevating ram (4) adopts pivot pin to be connected with said lift arm (2) front end; It is characterized in that: said frame (1), said lift arm (2), the said oil cylinder of closing the door (3) and said platform (5) four constitute a non-parallel tetragonal four-bar mechanism.
- 2. a kind of tailgate lifting mechanism that uses non-parallel quadrangle four-bar mechanism according to claim 1 is characterized in that: tetragonal all unequal to edge lengths, and said frame (1) otic placode pitch-row 54mm; Following hole site reach 8mm; The long 520mm of said lift arm (2); The otic placode pitch-row of said platform (5) is 60mm; The said oil cylinder of closing the door (3) usable length 510mm, the employing internal diameter of cylinder is 50mm, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 85mm, and rodless cavity is an oil suction chamber; It is 50mm that said elevating ram (4) adopts internal diameter of cylinder, and diameter of piston rod is 30mm, and stroke is the single acting oil cylinder of 125mm, and rodless cavity is an oil suction chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202805562U CN202169896U (en) | 2011-08-03 | 2011-08-03 | Tailboard lifting mechanism utilizing non-parallelogram four-rod mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202805562U CN202169896U (en) | 2011-08-03 | 2011-08-03 | Tailboard lifting mechanism utilizing non-parallelogram four-rod mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202169896U true CN202169896U (en) | 2012-03-21 |
Family
ID=45828097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202805562U Expired - Fee Related CN202169896U (en) | 2011-08-03 | 2011-08-03 | Tailboard lifting mechanism utilizing non-parallelogram four-rod mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202169896U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963287A (en) * | 2012-11-21 | 2013-03-13 | 苏州江南航天机电工业有限公司 | Hydraulic tail plate of novel material support vehicle |
| CN103072510A (en) * | 2013-02-01 | 2013-05-01 | 合肥工业大学 | Hydraulic lifting device of carrier |
| CN110979136A (en) * | 2019-12-03 | 2020-04-10 | 深圳市三能机电设备有限公司 | Automobile tail plate without electric cylinder |
-
2011
- 2011-08-03 CN CN2011202805562U patent/CN202169896U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963287A (en) * | 2012-11-21 | 2013-03-13 | 苏州江南航天机电工业有限公司 | Hydraulic tail plate of novel material support vehicle |
| CN103072510A (en) * | 2013-02-01 | 2013-05-01 | 合肥工业大学 | Hydraulic lifting device of carrier |
| CN110979136A (en) * | 2019-12-03 | 2020-04-10 | 深圳市三能机电设备有限公司 | Automobile tail plate without electric cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20150803 |
|
| EXPY | Termination of patent right or utility model |