CN213202179U - Lorry-mounted crane vertical leg with locking mechanism - Google Patents
Lorry-mounted crane vertical leg with locking mechanism Download PDFInfo
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- CN213202179U CN213202179U CN202021849627.1U CN202021849627U CN213202179U CN 213202179 U CN213202179 U CN 213202179U CN 202021849627 U CN202021849627 U CN 202021849627U CN 213202179 U CN213202179 U CN 213202179U
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- leg
- screw rod
- nut
- locking
- oil cylinder
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Abstract
The utility model discloses a lorry crane vertical leg with locking mechanism, include: vertical cylinder, support cover, screw rod, stabilizer blade and lock nut. The vertical oil cylinder comprises a cylinder body and a piston rod, the cylinder body is vertically fixed at the horizontal outer end part of the horizontal supporting leg, the supporting sleeve is fixedly connected to the lower end of the horizontal supporting leg, a through hole is formed in the axis of the supporting sleeve, and the screw rod is connected to the lower end of the piston rod and driven by the vertical oil cylinder to move up and down; the support legs are fixedly connected to the lower end of the screw rod. And the locking nut is sleeved outside the screw rod and is in threaded fit with the screw rod. After the vertical oil cylinder extends out, the locking nut is screwed up and tightly propped against the supporting sleeve to ensure that the supporting leg does not retract.
Description
Technical Field
The utility model belongs to the technical field of the hoist, in particular to lorry crane perpendicular leg with locking mechanism.
Background
The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes. The tire crane is mainly characterized in that: the traveling cab and the crane control cab are integrated into a whole and are formed by evolving a crawler crane (crawler crane), a crawler and a traveling support part of a traveling mechanism are changed into a chassis with tires, the defect that a crawler plate of the crawler crane (crawler crane) damages a road surface is overcome, and the material handling machine belongs to material handling machinery.
The vertical leg of the support leg of the lorry-mounted crane locks the working condition position by the hydraulic lock, and under the condition of long-time work, the quality of the hydraulic lock is uneven, and the vertical oil cylinder leaks liquid to cause the inclination of a vehicle body.
Disclosure of Invention
The utility model aims at the not enough of above-mentioned prior art, provide a relative hydraulic locking is safer and more reliable's lorry crane perpendicular leg.
For solving the above technical problem, the utility model discloses a technical scheme is:
a lorry crane vertical leg with a locking mechanism, a horizontal support leg being the basis for its application, the vertical leg comprising: vertical cylinder, support cover, screw rod, stabilizer blade and lock nut.
The horizontal supporting leg is connected to the crane frame; as an outwardly extending support structure for the crane carriage.
The vertical oil cylinder comprises a cylinder body and a piston rod, and the cylinder body is vertically fixed at the horizontal outer end part of the horizontal supporting leg. When the oil cylinder is vertical, the power unit of the vertical leg provides power for the extension and retraction of the oil cylinder.
The supporting sleeve is fixedly connected to the lower end of the horizontal supporting leg, the supporting sleeve is coaxial with the vertical oil cylinder, a through hole is formed in the axis of the supporting sleeve, and the piston rod can move up and down in the through hole.
The screw rod is connected to the lower end of the piston rod and is driven by the vertical oil cylinder to move up and down; the support legs are fixedly connected to the lower end of the screw rod.
And the locking nut is sleeved outside the screw rod and is in threaded fit with the screw rod.
Further, still include: and supporting the sleeve nut. The support sleeve nut is sleeved outside the support sleeve, and the support sleeve nut is in threaded fit with the support sleeve.
Further, the outer diameter of the support sleeve nut is the same as that of the locking nut.
Furthermore, the supporting sleeve nut and the locking nut are both provided with tightening bolts arranged along the respective radial directions. The supporting sleeve nut and the locking nut are prevented from rotating under the non-artificial condition, and meanwhile, the upper tightening bolt and the lower tightening bolt can be relatively fixed through the connecting piece.
Further, the threads on the screw are trapezoidal threads. The trapezoidal thread has certain self-locking shape, and the locking nut can not be forced to rotate after receiving axial pressure.
The utility model has the advantages that: after the vertical leg of the lorry-mounted crane with the locking mechanism extends out of the vertical oil cylinder, the locking nut is screwed up and tightly propped against the supporting sleeve, so that the leg is ensured not to retract. Due to the fact that the screw rod and the locking nut are adopted for thread rotation adjustment, adjustment speed is high, and working efficiency is high. In the locking effect, the mechanical locking is safer and more reliable than the hydraulic locking, and the mechanical locking and the hydraulic locking are combined with each other to prevent the vertical oil cylinder from leaking liquid and prolong the service life of the vertical leg.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
As shown in fig. 1, a lorry-mounted crane vertical leg with a locking mechanism, a horizontal supporting leg 1 is an application foundation of the lorry-mounted crane vertical leg, and the vertical leg comprises: the vertical oil cylinder 2, the support sleeve 3, the screw rod 4, the support leg 5, the locking nut 6 and the support sleeve nut 7.
The horizontal supporting leg 1 is connected to a crane frame; as an outwardly extending support structure for the crane.
The vertical oil cylinder 2 comprises a cylinder body 21 and a piston rod 22, and the cylinder body 21 is vertically fixed at the horizontal outer end part of the horizontal supporting leg 1. And when the oil cylinder 2 is vertical, the power unit of the vertical leg provides power for the extension and contraction of the oil cylinder.
The supporting sleeve 3 is fixedly connected to the lower end of the horizontal supporting leg 1, is coaxial with the vertical oil cylinder 2, is provided with a through hole 31 at the axis, and the piston rod 22 can move up and down in the through hole 31.
The support sleeve nut 7 is sleeved outside the support sleeve 3, and the support sleeve nut 7 is in threaded fit with the support sleeve 3. The support sleeve nut 7 rotates downwards and is tightly propped against the locking nut 6, so that certain pretightening force can be applied.
The screw rod 4 is connected with the lower end of the piston rod 22 and is driven by the vertical oil cylinder 2 to move up and down; the support leg 5 is fixedly connected with the lower end of the screw rod 4. The threads on the screw rod 4 are trapezoidal threads. The trapezoidal thread has a certain self-locking shape, and the locking nut 6 is not forced to rotate when receiving axial pressure.
And the locking nut 6 is sleeved outside the screw rod 4, and the locking nut 6 is in threaded fit with the screw rod 4.
The outer diameter of the support sleeve nut 7 is the same as that of the locking nut 6.
The supporting sleeve nut 7 and the locking nut 6 are both provided with tightening bolts 8 which are arranged along the respective radial directions. The upper and lower tightening bolts 8 can be relatively fixed by a connecting piece in order to prevent the support sleeve nut 7 and the lock nut 6 from rotating artificially.
When the support device works, the horizontal support leg 1 extends outwards, the vertical oil cylinder 2 extends downwards, the lock nut 6 is screwed upwards after the support leg 5 reaches the bottom surface, and the support sleeve nut 7 is screwed downwards; the locking nut 6 is tightly propped against the support sleeve 3 to ensure that the supporting leg does not retract; in the locking effect, the mechanical locking is safe and reliable relative to the hydraulic locking.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the embodiments and descriptions herein to illustrate the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, all of which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents.
In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "center", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the present invention.
Claims (5)
1. The utility model provides a lorry crane vertical leg with locking mechanism, is applied to on the horizontal support leg of hoist frame, its characterized in that includes:
the vertical oil cylinder comprises a cylinder body and a piston rod, and the cylinder body is vertically fixed at the horizontal outer end part of the horizontal supporting leg;
the supporting sleeve is fixedly connected to the lower end of the horizontal supporting leg, is coaxial with the vertical oil cylinder, is provided with a through hole at the axis, and can move up and down in the through hole;
the screw rod is connected to the lower end of the piston rod and is driven by the vertical oil cylinder to move up and down;
the support leg is fixedly connected to the lower end of the screw rod; and
and the locking nut is sleeved outside the screw rod and is in threaded fit with the screw rod.
2. A lorry crane vertical leg with a locking mechanism as claimed in claim 1, characterised in that: further comprising: and the support sleeve nut is sleeved outside the support sleeve and is in threaded fit with the support sleeve.
3. A lorry crane vertical leg with a locking mechanism as claimed in claim 2, characterised in that: the outer diameter of the support sleeve nut is the same as that of the locking nut.
4. A lorry crane vertical leg with a locking mechanism as claimed in claim 3, characterised in that: the supporting sleeve nut and the locking nut are both provided with puller bolts arranged along the radial directions of the supporting sleeve nut and the locking nut.
5. A lorry crane vertical leg with a locking mechanism as claimed in claim 1, characterised in that: the screw thread on the screw rod is a trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849627.1U CN213202179U (en) | 2020-08-31 | 2020-08-31 | Lorry-mounted crane vertical leg with locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021849627.1U CN213202179U (en) | 2020-08-31 | 2020-08-31 | Lorry-mounted crane vertical leg with locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213202179U true CN213202179U (en) | 2021-05-14 |
Family
ID=75843135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021849627.1U Active CN213202179U (en) | 2020-08-31 | 2020-08-31 | Lorry-mounted crane vertical leg with locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213202179U (en) |
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2020
- 2020-08-31 CN CN202021849627.1U patent/CN213202179U/en active Active
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