CN215626371U - Novel overturning supporting leg device of connecting rod structure - Google Patents
Novel overturning supporting leg device of connecting rod structure Download PDFInfo
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- CN215626371U CN215626371U CN202122362150.5U CN202122362150U CN215626371U CN 215626371 U CN215626371 U CN 215626371U CN 202122362150 U CN202122362150 U CN 202122362150U CN 215626371 U CN215626371 U CN 215626371U
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Abstract
Novel upset landing leg device of connecting rod structure. A novel overturning leg device of a connecting rod structure for increasing the conversion rate of overturning thrust is provided. Comprises a linear driving mechanism, a long connecting rod, a short connecting rod, a hinged shaft, a fixed seat and a turnover seat; one end of the long connecting rod is hinged with the fixed seat, and the other end of the long connecting rod is hinged with the hinge shaft; the overturning seat is fixedly arranged at the end part of the vertical supporting leg and is hinged with the fixed seat; the turnover seat is directly welded on the vertical supporting leg and forms a whole with the vertical supporting leg, and the form has higher strength and improves the compactness of the structure; one end of the short connecting rod is hinged with the turnover seat, and the other end of the short connecting rod is hinged with the hinge shaft. The present case adopts two four-bar linkage structural style to apply to upset landing leg device, but the conversion rate of greatly increased linear drive mechanism thrust can be with the more efficient conversion of thrust that linear drive mechanism provided to the effective moment of upset action moreover, and the prerequisite that satisfies the upset action descends the upset and only selects actuating mechanism to do littleer, has saved space and cost.
Description
Technical Field
The utility model relates to a lower vehicle supporting part of hoisting equipment, in particular to a novel overturning leg device with a connecting rod structure.
Background
The general structural form of the crane is that an upper turning and hoisting part and a lower supporting part are arranged; wherein, in order to guarantee the stability of hoist operation, need the landing leg to support the ground, the landing leg of hoist plays vital function to the hoist. The supporting legs of the crane consist of horizontal telescopic legs and vertical telescopic legs; the outward extension of the horizontal telescopic legs can ensure the stability of the crane, prevent the crane from tipping and ensure the operation safety; the vertical supporting legs support the ground and share most of the direct return force of the heavy object lifted by the crane.
Vertical legs are used for a number of reasons, such as: the vertical supporting leg needs to be turned over by 180 degrees to the upper side due to the reasons that the space of the chassis is limited, the ground clearance is small due to the overlong length of the supporting leg and the like;
there are many types of flip leg styles on the market today, roughly divided into the following:
1. manually-operated turning form
Connecting the vertical leg with the horizontal leg through a large shaft, and limiting in a bolt mode; or the two sides are connected with the vertical leg and the horizontal leg by a connecting pin shaft; the vertical leg is manually moved to turn over;
the form is only suitable for small-tonnage cranes, and the middle-tonnage cranes and the large-tonnage cranes can not be turned over manually;
2. vertical oil cylinder linkage type
Based on the mechanical lever principle, the vertical leg is driven to turn over up and down by the extension and retraction of the vertical oil cylinder;
the form depends excessively on the extension and retraction of the vertical oil cylinder, and the vertical oil cylinder is driven by the extension and retraction, so that the vertical leg cannot be turned over at any length and cannot be stopped at any angle; the turning action is extremely inflexible;
3. driving mode of turnover oil cylinder
A mode of driving the vertical leg to turn over by independently adding a turning oil cylinder; by using the extension and contraction of the turnover cylinder, the vertical leg is driven to turn upwards by the outward extension of the turnover cylinder, and the vertical leg is driven to turn downwards by the contraction of the turnover cylinder;
in the prior art, for example, an invention patent of "a crane arm and a self-disassembling and assembling device thereof" published in 2012, 05, month 16 is patent No. 2010105292968; the telescopic oil cylinder is driven by the telescopic oil cylinder to stretch and retract, and the supporting leg oil cylinder rotates relative to the supporting leg in a vertical plane. In the actual use process, the problems that the thrust moment conversion rate of the oil cylinder is low, the mechanism is not stable in operation, the overturning angle can only reach 0-90 degrees, the supporting legs cannot be in a vertical and fully-folded state, the space is occupied more in space and the like are found.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a novel overturning leg device with a connecting rod structure, which has a compact structure and increases the conversion rate of overturning thrust.
The technical scheme of the utility model is as follows: the novel overturning leg device with the connecting rod structure is characterized by comprising a linear driving mechanism, a long connecting rod, a short connecting rod, a hinged shaft, a fixed seat and an overturning seat;
the fixed seat is fixedly arranged below the main supporting leg;
the linear driving mechanism is arranged in the fixed seat, the tail part of the cylinder body is hinged with the fixed seat, and the end part of the piston rod is hinged on the hinged shaft;
one end of the long connecting rod is hinged with the fixed seat, and the other end of the long connecting rod is hinged with the hinged shaft;
the overturning seat is fixedly arranged at the end part of the vertical supporting leg and is hinged with the fixed seat;
one end of the short connecting rod is hinged with the turnover seat, and the other end of the short connecting rod is hinged with the hinge shaft.
The linear driving mechanism comprises an oil cylinder, an air cylinder or an electric push rod.
The overturning seat comprises a bottom plate and a pair of side overturning plates;
the bottom plate is fixedly arranged at the end part of the vertical supporting leg;
the pair of side turning plates are symmetrically arranged on the side part of the bottom plate;
the end part of the side turning plate close to the fixed seat is hinged with the fixed seat.
The middle part of the bottom plate is provided with an extension plate which is hinged with the short connecting rod;
the extension plate is fixedly connected with the bottom plate.
The fixed seat comprises a lining plate and a pair of fixed side plates;
the lining plate is fixedly arranged below the main supporting leg;
the pair of fixed side plates are symmetrically and fixedly arranged on the side part of the linear driving mechanism and are fixedly arranged below the lining plate.
The fixed side plate comprises a side plate A and a side plate B;
the side plate A and the side plate B are fixedly arranged below the lining plate in parallel;
and a space matched with the overturning seat is arranged between the side plate A and the side plate B.
And one end of the pair of fixed side plates, which is far away from the overturning seat, is provided with a reinforcing shaft in a penetrating connection.
The reinforcing shaft is fixedly connected with the fixed side plate.
The short connecting rods are provided with a pair of short connecting rods which are symmetrically arranged at the side parts of the piston rod.
The long connecting rods are provided with a pair of long connecting rods and symmetrically arranged on the side parts of the piston rods.
The utility model comprises a linear driving mechanism, a long connecting rod, a short connecting rod, a hinge shaft, a fixed seat and a turnover seat; one end of the long connecting rod is hinged with the fixed seat, and the other end of the long connecting rod is hinged with the hinge shaft; the overturning seat is fixedly arranged at the end part of the vertical supporting leg and is hinged with the fixed seat; the turnover seat is directly welded on the vertical supporting leg and forms a whole with the vertical supporting leg, and the form has higher strength and improves the compactness of the structure; one end of the short connecting rod is hinged with the turnover seat, and the other end of the short connecting rod is hinged with the hinge shaft. The present case adopts two four-bar linkage structural style to apply to upset landing leg device, but the conversion rate of greatly increased linear drive mechanism thrust can be with the more efficient conversion of thrust that linear drive mechanism provided to the effective moment of upset action moreover, and the prerequisite that satisfies the upset action descends the upset and only selects actuating mechanism to do littleer, has saved space and cost.
Drawings
Figure 1 is a schematic perspective view of the present invention,
figure 2 is a schematic perspective view of the present invention,
FIG. 3 is a perspective view of the connection between the fixing base and the flipping base,
figure 4 is a schematic view of the near fully expanded state of the present invention,
FIG. 5 is a schematic view of the semi-retracted state of the present invention;
FIG. 6 is a schematic structural diagram of the fully-retracted state of the present invention;
in the figure, 1 is a linear driving mechanism, 2 is a long connecting rod, 3 is a short connecting rod, 4 is a hinge shaft, 5 is a fixed seat, 51 is a lining plate, 52 is a fixed side plate, 521 is a side plate A, 522 is a side plate B, 6 is a turnover seat, 61 is a bottom plate, 62 is a side turnover plate, 63 is an extension plate, 7 is a main supporting leg, 8 is a vertical supporting leg, and 9 is a reinforcing shaft.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1-6, the novel overturning leg device with the connecting rod structure comprises a linear driving mechanism 1, a long connecting rod 2, a short connecting rod 3, a hinge shaft 4, a fixed seat 5 and an overturning seat 6;
the fixed seat 5 is fixedly arranged below the main supporting leg 7;
the linear driving mechanism 1 is arranged in the fixed seat 5, the tail part of the cylinder body is hinged with the fixed seat 5, and the end part of the piston rod is hinged on the hinged shaft 4; the turnover function (up-turnover and down-turnover) of the vertical supporting leg 8 is driven by the extension and retraction of the linear driving mechanism 1 which is hinged;
one end of the long connecting rod 2 is hinged with the fixed seat 5, and the other end of the long connecting rod is hinged with the hinged shaft 4;
the overturning seat 6 is fixedly arranged at the end part of the vertical supporting leg 8 and is hinged with the fixed seat 5; the overturning seat 6 is directly welded on the vertical supporting leg 8 and forms a whole with the vertical supporting leg 8, and the form has higher strength and improves the compactness of the structure;
one end of the short connecting rod 3 is hinged with the turnover seat 6, and the other end of the short connecting rod is hinged with the hinge shaft 4.
The linear driving mechanism 1 comprises an oil cylinder, an air cylinder or an electric push rod. The oil cylinder is preferably selected in the scheme.
The overturning seat 6 comprises a bottom plate 61 and a pair of side turning plates 62;
the bottom plate 61 is fixedly arranged at the end part of the vertical leg 8;
the pair of side turning plates 62 are symmetrically arranged at the side part of the bottom plate 61;
the end part of the side turning plate 62 close to the fixed seat 5 is hinged with the fixed seat 5 through a hinge shaft A.
The middle part of the bottom plate 61 is provided with an extension plate 63 which is hinged with the short connecting rod 3;
the extension plate 63 is fixedly connected to the base plate 61.
The fixed seat 5 comprises a lining plate 51 and a pair of fixed side plates 52;
the lining plate 51 is fixedly arranged below the main supporting leg 7;
the pair of fixed side plates 52 are symmetrically fixed to the side of the linear drive mechanism 1 and are fixed below the liner plate 51.
Further optimizing and improving the overall strength, the fixed side plate 52 comprises a side plate A521 and a side plate B522;
the side plate A521 and the side plate B522 are fixedly arranged below the lining plate 51 in parallel;
a space matched with the side turning plate 62 of the turning seat 6 is arranged between the side plate A521 and the side plate B522.
One end of the pair of fixed side plates 52 far away from the overturning seat 6 is provided with a reinforcing shaft 9 which is connected in a penetrating way.
Further preferably, the reinforcing shaft 9 is fixedly connected with the fixed side plate 52.
Further expanding, the reinforcing shaft 9 and the fixed side plates 52 can be movably connected, the two ends of the reinforcing shaft 9 are clamped, the pair of fixed side plates 52 are connected into a stable whole, and the strength of the whole is improved.
The short connecting rods 3 are provided with a pair and symmetrically arranged at the side parts of the piston rods.
The long connecting rods 2 are provided with a pair of long connecting rods, symmetrically arranged at the side parts of the piston rods and positioned at the outer sides of the short connecting rods 3.
As shown in fig. 1, the state is a fully retracted state, and at this time, the piston rod of the linear driving mechanism (in this case, preferably, the oil cylinder) nearly extends out of the piston cavity; when the piston rod retracts, the hinged shaft is pulled to move towards the cylinder body, and the vertical supporting leg is stably rotated clockwise through the action of the long connecting rod and the short connecting rod and the hinging of the fixed seat and the overturning seat.
The present case adopts two four-bar linkage structural style to apply to upset landing leg device, but the conversion rate of 1 thrust of greatly increased linear drive mechanism, can be with the more efficient conversion of thrust that linear drive mechanism 1 provided to the effective moment of upset action moreover, and the prerequisite that satisfies the upset action descends the upset and only selects actuating mechanism to do littleer, has saved space and cost.
Compared with the prior art, the scheme is that:
1. from the aspect of the thrust moment of the oil cylinder: the oil cylinder with the four-bar mechanism can be made smaller under the condition that the effective moment of the four-bar mechanism is high and the required thrust moment is the same, so that the cost can be saved;
2. from the aspect of structural operation; the double four-bar linkage mechanism disclosed by the utility model has the advantages that the jamming cannot occur in the whole overturning process, and the operation is more stable.
3. From the aspect of overturning angle; the utility model can turn the supporting legs by 0-180 degrees and vertically and upwardly take the supporting legs, so that the mechanism is more compact and the space is saved.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (10)
1. The novel overturning leg device with the connecting rod structure is characterized by comprising a linear driving mechanism, a long connecting rod, a short connecting rod, a hinged shaft, a fixed seat and an overturning seat;
the fixed seat is fixedly arranged below the main supporting leg;
the linear driving mechanism is arranged in the fixed seat, the tail part of the cylinder body is hinged with the fixed seat, and the end part of the piston rod is hinged on the hinged shaft;
one end of the long connecting rod is hinged with the fixed seat, and the other end of the long connecting rod is hinged with the hinged shaft;
the overturning seat is fixedly arranged at the end part of the vertical supporting leg and is hinged with the fixed seat;
one end of the short connecting rod is hinged with the turnover seat, and the other end of the short connecting rod is hinged with the hinge shaft.
2. The novel overturning leg device of link structure as claimed in claim 1, wherein the linear driving mechanism comprises an oil cylinder, an air cylinder or an electric push rod.
3. The novel overturning leg device of link structure as claimed in claim 1, wherein the overturning seat comprises a bottom plate and a pair of side turning plates;
the bottom plate is fixedly arranged at the end part of the vertical supporting leg;
the pair of side turning plates are symmetrically arranged on the side part of the bottom plate;
the end part of the side turning plate close to the fixed seat is hinged with the fixed seat.
4. The novel overturning leg device of link structure as claimed in claim 3, wherein the middle part of the bottom plate is provided with an extension plate for hinging with the short link;
the extension plate is fixedly connected with the bottom plate.
5. The novel overturning leg device of link structure as claimed in claim 1, wherein the fixing seat comprises a lining plate and a pair of fixing side plates;
the lining plate is fixedly arranged below the main supporting leg;
the pair of fixed side plates are symmetrically and fixedly arranged on the side part of the linear driving mechanism and are fixedly arranged below the lining plate.
6. The link structure novel overturning leg device according to claim 5, wherein the fixed side plate comprises a side plate A and a side plate B;
the side plate A and the side plate B are fixedly arranged below the lining plate in parallel;
and a space matched with the overturning seat is arranged between the side plate A and the side plate B.
7. The novel overturning leg device of link structure as claimed in claim 5, wherein a pair of said fixed side plates are provided with a through-connection reinforced shaft at the end far from said overturning seat.
8. The novel overturning leg device of link structure as claimed in claim 7, wherein the reinforcing shaft is fixedly connected with the fixed side plate.
9. The novel overturning leg device of link structure as claimed in claim 1, wherein said short links are provided in a pair, symmetrically disposed on the side of the piston rod.
10. The novel overturning leg device of link structure as claimed in claim 1, wherein said long links are provided with a pair, symmetrically disposed at the side of the piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122362150.5U CN215626371U (en) | 2021-09-28 | 2021-09-28 | Novel overturning supporting leg device of connecting rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122362150.5U CN215626371U (en) | 2021-09-28 | 2021-09-28 | Novel overturning supporting leg device of connecting rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215626371U true CN215626371U (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122362150.5U Active CN215626371U (en) | 2021-09-28 | 2021-09-28 | Novel overturning supporting leg device of connecting rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215626371U (en) |
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2021
- 2021-09-28 CN CN202122362150.5U patent/CN215626371U/en active Active
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