CN215798109U - Electrically-driven horizontal support leg device of lorry-mounted crane - Google Patents
Electrically-driven horizontal support leg device of lorry-mounted crane Download PDFInfo
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- CN215798109U CN215798109U CN202122456578.6U CN202122456578U CN215798109U CN 215798109 U CN215798109 U CN 215798109U CN 202122456578 U CN202122456578 U CN 202122456578U CN 215798109 U CN215798109 U CN 215798109U
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- supporting leg
- lorry
- driving mechanism
- linear driving
- piston rod
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Abstract
The lorry-mounted crane electrically drives the horizontal supporting leg device. The utility model relates to a lorry crane, mobile crane and take the engineering machine tool, commodity circulation machinery of horizontal landing leg to remove to equip, especially relate to lorry crane electric drive horizontal landing leg device. Comprises a basic supporting leg, a telescopic supporting leg and a linear driving mechanism; the cylinder body of the linear driving mechanism is arranged in the cavity of the basic supporting leg, the piston rod of the linear driving mechanism is connected with the telescopic supporting leg through the buffer mechanism, and the telescopic supporting leg slides in the cavity of the basic supporting leg in a reciprocating manner through the extension and retraction of the piston rod; after the vertical supporting leg of the telescopic supporting leg supports the ground, the pin shaft moves leftwards to compress the spring, so that the piston rod is protected from being subjected to set smaller thrust, and bending damage caused by rigid bearing of huge counter force of the vertical supporting leg is avoided. The utility model has the characteristics of compact structure, reduction of bending deformation of the piston rod and the like.
Description
Technical Field
The utility model relates to a lorry-mounted crane, an automobile crane, and mobile equipment with a horizontal supporting leg, such as engineering machinery and logistics machinery, in particular to an electrically-driven horizontal supporting leg device of the lorry-mounted crane.
Background
A truck-mounted crane (crane truck) is a device for lifting, revolving and hoisting goods by a hydraulic lifting and telescoping system, and is generally assembled on a truck.
The lorry-mounted crane has good maneuverability and rapid transfer, can integrate the functions of hoisting and transportation, improves the resource utilization rate, and improves the stability of hoisting because the telescopic supporting legs need to extend out of the basic supporting legs during the working process. The telescopic supporting leg is arranged in the foundation supporting leg in a sliding mode, the state of figure 6 appears often after the vertical supporting leg at the end of the telescopic supporting leg is contacted with the ground, the telescopic supporting leg and the foundation supporting leg are inclined due to the gap, and after the telescopic supporting leg and the foundation supporting leg are used for a period of time, the problem that relevant accessories such as a driving device for pushing the telescopic supporting leg are bent and the like can occur.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the electrically-driven horizontal leg device of the lorry-mounted crane, which has a compact structure and reduces the bending deformation of a piston rod.
The technical scheme of the utility model is as follows: the electrically-driven horizontal leg device of the lorry-mounted crane comprises a basic leg, a telescopic leg and a linear driving mechanism;
the cylinder body of the linear driving mechanism is hinged in the cavity of the basic supporting leg, the piston rod of the linear driving mechanism is connected with the telescopic supporting leg through a buffer mechanism, and the telescopic supporting leg slides in the cavity of the basic supporting leg in a reciprocating manner through the extension and retraction of the piston rod;
the buffer mechanism comprises a pin shaft and a plurality of springs;
the end part of a piston rod of the linear driving mechanism is provided with a jack matched with the pin shaft;
the pin shaft horizontally penetrates through the inner cavity of the telescopic supporting leg through the jack and is in clearance fit with the jack;
the jack is internally provided with a plurality of accommodating grooves matched with the springs, and the deformation of the piston rod of the linear driving mechanism is reduced through the springs in the accommodating grooves.
The spring sets up in the jack, is close to the cylinder side, and one end is connected with the tank bottom of holding tank, and the other end and round pin hub connection.
The pin shaft is provided with an installation groove matched with the spring.
And a first positioning hole matched with the spring is formed in the mounting groove.
The end part of the pin shaft is provided with a guide-in part which is convenient for installing a spring.
And a second positioning hole matched with the spring is formed in the middle of the pin shaft.
The linear driving mechanism is an electric cylinder, an oil cylinder or an air cylinder.
The utility model comprises a basic supporting leg, a telescopic supporting leg and a linear driving mechanism; the cylinder body of the linear driving mechanism is arranged in the cavity of the basic supporting leg, the piston rod of the linear driving mechanism is connected with the telescopic supporting leg through the buffer mechanism, and the telescopic supporting leg slides in the cavity of the basic supporting leg in a reciprocating manner through the extension and retraction of the piston rod; after the vertical supporting leg of the telescopic supporting leg supports the ground, the pin shaft moves leftwards to compress the spring, so that the piston rod is protected from being subjected to set smaller thrust, and bending damage caused by rigid bearing of huge counter force of the vertical supporting leg is avoided. The utility model has the characteristics of compact structure, reduction of bending deformation of the piston rod and the like.
Drawings
Figure 1 is a schematic diagram of the structure of the utility model,
figure 2 is a second schematic structural view of the present invention,
figure 3 is a schematic structural view of the pin connection state,
figure 4 is an enlarged structural schematic diagram of the pin shaft provided with the mounting groove,
figure 5 is an enlarged structural view of the pin shaft provided with the lead-in part,
FIG. 6 is a schematic structural view of a telescopic leg in a state of being inclined in the related art;
in the figure, 1 is a basic supporting leg, 2 is a telescopic supporting leg, 3 is an electric cylinder, 4 is a buffer mechanism, 41 is a pin shaft, 411 is an installation groove, 412 is a first positioning hole, 413 is a leading-in part, and 42 is a spring.
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 figures 1-5, the utility model relates to an electrically-driven horizontal supporting leg device of a lorry-mounted crane, which comprises a basic supporting leg 1, a telescopic supporting leg 2 and a linear driving mechanism;
the cylinder body of the linear driving mechanism is hinged in the cavity of the basic supporting leg 1, the piston rod of the linear driving mechanism is connected with the telescopic supporting leg 2 through the buffer mechanism 4, and the telescopic supporting leg 2 slides in the cavity of the basic supporting leg 1 in a reciprocating manner through the extension and retraction of the piston rod;
the buffer mechanism 4 comprises a pin shaft 41 and a plurality of springs 42;
the end part of the piston rod of the linear driving mechanism is provided with an insertion hole matched with the pin shaft 41;
the pin shaft 41 horizontally penetrates through the inner cavity of the telescopic supporting leg 2 (hinged or fixedly connected with the telescopic supporting leg 2) through the jack and is in clearance fit with the jack;
a plurality of accommodating grooves matched with the springs 42 are formed in the insertion holes, and deformation of piston rods of the linear driving mechanisms is reduced through the springs 42 in the accommodating grooves.
The pin 41 is connected to the telescopic leg 2, and when the telescopic leg 2 is horizontally extended, the pin 41 and the telescopic leg 2 are pushed to move forward by the pre-compression force of the spring 42, because the pre-compression force is set to be larger than the force required for movement, the spring 42 always maintains the pin 41 in a state (clearance fit) that the piston rod is close to the right (the direction of fig. 2 is taken as the reference direction). After the vertical supporting leg of the telescopic supporting leg 2 supports the ground, the pin shaft 41 moves leftwards to compress the spring 42, so that the piston rod is protected from being subjected to set small thrust, and bending damage caused by rigid bearing of huge counter force of the vertical supporting leg is avoided.
The spring 42 is arranged in the jack and close to the cylinder body, one end of the spring is connected with the groove bottom of the accommodating groove, and the other end of the spring is connected with the pin shaft 41.
The pin shaft 41 is provided with a mounting groove 411 adapted to the spring 42.
A first positioning hole 412 adapted to the spring 42 is disposed in the mounting groove 411. The spring 42 is first inserted into the mounting groove 411, and then the pin 41 is inserted until the spring 42 is inserted into the first positioning hole 412.
The end of the pin 41 is provided with an introduction part 413 for facilitating the installation of the spring 42. A section of the spring 42 is clamped in the accommodating groove in advance, then the end provided with the leading-in part 413 firstly enters the inserting hole, and the spring 42 is slowly compressed to the middle position of the pin shaft 41 under the action of the inclined surface of the leading-in part 413.
Further preferably, a second positioning hole matched with the spring 42 is formed in the middle of the pin shaft 41. After the spring 42 is slowly compressed to the middle position of the pin shaft 41, the other end of the spring is clamped into the second positioning hole, and the stability of the spring 42 in the working process is improved.
The linear driving mechanism is an electric cylinder 3, an oil cylinder or an air cylinder. The present case is preferred to select electronic jar 3, adopts the hydro-cylinder to take place easily and lets out or hydraulic pressure lock produces the problem, can lead to the landing leg to throw away and cause the accident in the driving process on the road at the car. In addition, the oil cylinder needs elements such as a hydraulic valve and a pipeline which are matched, and the occupied space is large.
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 (7)
1. The electrically-driven horizontal leg device of the lorry-mounted crane comprises a basic leg, a telescopic leg and a linear driving mechanism; it is characterized in that the preparation method is characterized in that,
the cylinder body of the linear driving mechanism is hinged in the cavity of the basic supporting leg, the piston rod of the linear driving mechanism is connected with the telescopic supporting leg through a buffer mechanism, and the telescopic supporting leg slides in the cavity of the basic supporting leg in a reciprocating manner through the extension and retraction of the piston rod;
the buffer mechanism comprises a pin shaft and a plurality of springs;
the end part of a piston rod of the linear driving mechanism is provided with a jack matched with the pin shaft;
the pin shaft horizontally penetrates through the inner cavity of the telescopic supporting leg through the jack and is in clearance fit with the jack;
the jack is internally provided with a plurality of accommodating grooves matched with the springs, and the deformation of the piston rod of the linear driving mechanism is reduced through the springs in the accommodating grooves.
2. The electrically driven horizontal leg arrangement of a lorry crane according to claim 1, characterized in that said spring is arranged in the receptacle close to the cylinder side, with one end connected to the bottom of the receiving groove and the other end connected to the pin.
3. The electrically driven horizontal leg device of an lorry-mounted crane according to claim 1 or 2, characterized in that the pin is provided with a mounting groove adapted to the spring.
4. The electrically driven horizontal leg device of an lorry-mounted crane according to claim 3, characterized in that a first positioning hole matched with the spring is formed in the mounting groove.
5. An electrically driven horizontal leg arrangement of a lorry crane according to claim 1, characterized in that the end of the pin is provided with a lead-in for facilitating mounting of a spring.
6. The electrically driven horizontal leg device of the lorry-mounted crane as claimed in claim 5, wherein a second positioning hole matched with the spring is formed in the middle of the pin shaft.
7. The electrically driven horizontal leg device of a lorry-mounted crane according to claim 1, characterized in that the linear driving mechanism is an electric cylinder, a hydro cylinder or a pneumatic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122456578.6U CN215798109U (en) | 2021-10-12 | 2021-10-12 | Electrically-driven horizontal support leg device of lorry-mounted crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122456578.6U CN215798109U (en) | 2021-10-12 | 2021-10-12 | Electrically-driven horizontal support leg device of lorry-mounted crane |
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| Publication Number | Publication Date |
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| CN215798109U true CN215798109U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122456578.6U Active CN215798109U (en) | 2021-10-12 | 2021-10-12 | Electrically-driven horizontal support leg device of lorry-mounted crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933254A (en) * | 2022-06-16 | 2022-08-23 | 江苏中矿重型装备有限公司 | Lower supporting device for thrust wheel scrap steel heavy plate conveyor |
-
2021
- 2021-10-12 CN CN202122456578.6U patent/CN215798109U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933254A (en) * | 2022-06-16 | 2022-08-23 | 江苏中矿重型装备有限公司 | Lower supporting device for thrust wheel scrap steel heavy plate conveyor |
| CN114933254B (en) * | 2022-06-16 | 2023-10-13 | 江苏中矿重型装备有限公司 | Lower supporting device for supporting wheel scrap steel heavy plate conveyor |
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