CN216761590U

CN216761590U - Lifting device and trailer thereof

Info

Publication number: CN216761590U
Application number: CN202220412356.6U
Authority: CN
Inventors: 陈廷勇; 李冬; 唐新和
Original assignee: Changsha Intelligent Special Vehicle Research Institute Co ltd
Current assignee: Changsha Intelligent Special Vehicle Research Institute Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-17
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to a lifting device and a trailer thereof, compared with the mode that the lifting device is directly linked with a flat plate and the flat plate is lifted and descended by directly stretching an oil cylinder without directly linking a driving component with the flat plate, the mode adopts a supporting seat and a rotating arm as carriers, the power of the driving component is transmitted to the rotating arm through the conversion of the supporting seat and the rotating arm, and then the rotating arm rotates to drive the flat plate to lift and descend, in particular to skillfully setting the connecting point of the rotating arm and the supporting seat to be higher than the connecting point of the rotating arm and the flat plate when the flat plate is in a horizontal position, the utility model has the advantages that the small-amplitude stroke of the driving component can meet the requirement of large-amplitude lifting of the flat plate, taking the driving component as an oil cylinder as an example, the stroke of the oil cylinder can be greatly reduced, not only can reduce the cost of the driving component, but also can improve the lifting range of the flat plate, more importantly, the weight born by the driving assembly can be greatly reduced, the service life of the driving assembly is prolonged, and safe and stable operation is ensured.

Description

Lifting device and trailer thereof

Technical Field

The utility model relates to the field of trailers, in particular to a lifting device of a trailer.

Background

The trailer, also known as a wrecker, a road rescue vehicle and a towing vehicle, has multiple functions of hoisting, lifting, towing and the like, is mainly used for road fault vehicles, urban illegal vehicles, emergency rescue and the like by wreckers, and can timely tow fault vehicles or accident vehicles away from the site to ensure the smoothness of roads.

As shown in fig. 1, a conventional trailer includes a body 1, tires 2, a bed 3, a lifting device 4, a lifting device 5, and a damping device 6. Its elevating gear 4 adopts conventional mode, directly links elevating gear and dull and stereotyped 3, directly stretches out and draws back through the hydro-cylinder in order to realize dull and stereotyped lift. However, this type of lifting device 4 has several disadvantages: 1. in the lifting process of the flat plate, the function can be realized only by a large oil cylinder stroke, and the manufacturing cost is high; 2. the stroke of the oil cylinder is limited, and the oil cylinders with the same grade can only realize the small-range lifting of the flat plate, and have large lifting difficulty and inflexibility; 3. the flat plate and the vehicle borne by the flat plate are all directly stressed on the lifting device 4, so that the lifting device is easy to damage, the service life of the lifting device is seriously shortened, the use cost is quite high, and safety accidents are easily caused.

Therefore, how to improve the specific structure of the lifting device to avoid the above-mentioned defects is a technical problem to be solved in the field of trailers.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present invention provides a lifting device, including: the device comprises a supporting seat, a driving assembly and a rotating arm; one end of the rotating arm is connected with the supporting seat, and the other end of the rotating arm is connected with the flat plate; one end of the driving component is connected with the supporting seat, and the other end of the driving component is connected with the rotating arm so as to drive the rotating arm to rotate and further drive the flat plate to lift;

the connecting point of the rotating arm and the supporting seat is higher than the connecting point of the rotating arm and the flat plate when the flat plate is in a horizontal position.

Furthermore, the supporting seat is in an ear shape, and flanges are arranged at the upper end and the lower end of the supporting seat.

Further, the connecting point of the driving assembly and the rotating arm is positioned at the upper end of the midpoint of the rotating arm.

Furthermore, when the flat plate is in a horizontal position, the connecting point of the rotating arm and the supporting seat, the connecting point of the driving assembly and the rotating arm and the connecting point of the rotating arm and the flat plate are positioned on the same vertical line.

Furthermore, the connection points between the supporting seat, the driving component, the rotating arm and the flat plate are connected by a pin shaft component.

Furthermore, an elastic buffer part is arranged at the joint of the pin shaft assembly.

In another aspect, the present invention also provides a trailer comprising a body, tires, a platform, and any of the above-described lifting devices; the lifting device is used for lifting the flat plate.

Further, the trailer also comprises a hoisting device or/and a damping device.

Compared with the mode that the lifting device is directly linked with the flat plate and the flat plate is lifted and descended by directly stretching and contracting the oil cylinder in the prior art, the lifting device and the trailer thereof provided by the utility model adopt the supporting seat and the rotating arm as carriers without directly linking the driving component with the flat plate, transmit the power of the driving component to the rotating arm through the conversion of the supporting seat and the rotating arm, and then drive the flat plate to lift and descend by the rotation of the rotating arm, in particular skillfully set the connecting point of the rotating arm and the supporting seat to be higher than the connecting point of the rotating arm and the flat plate when the flat plate is in a horizontal position, have the advantages that the small-amplitude stroke of the driving component can meet the large-amplitude lifting of the flat plate, and take the driving component as the oil cylinder, the stroke of the oil cylinder is greatly reduced, not only can the cost of the driving component be reduced, but also can improve the lifting range of the flat plate, more importantly, the weight born by the driving assembly can be greatly reduced, the service life of the driving assembly is prolonged, and the safe and stable operation is ensured.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a trailer of the prior art;

FIG. 2 is a schematic structural view of one embodiment of the lifting device of the present invention;

fig. 3 is a schematic elevation view of an embodiment of the elevating device of the present invention.

Detailed Description

As shown in fig. 2, there is shown a lifting device of a trailer of the present invention, which comprises a body 1, tires 2, a platform 3, and the utility model is characterized in that the lifting device 4 is further improved. The lifting device 4 comprises a supporting seat 41, a driving component 42 and a rotating arm 43; wherein one end of the rotating arm is connected with the supporting seat (as shown in a connection point A in figure 2), and the other end is connected with the flat plate (as shown in a connection point B in figure 2); one end of the driving component is connected with the supporting seat (as shown in a connection point C in fig. 2), and the other end of the driving component is connected with the rotating arm (as shown in a connection point D in fig. 2) so as to drive the rotating arm to rotate and further drive the flat plate to lift. The key point is that the connection point A of the rotating arm 43 and the supporting seat 41 should be higher than the connection point B of the rotating arm 43 and the flat plate 3 when the flat plate is in a horizontal position, so that when the rotating arm drives the flat plate to lift, the required stroke of the driving assembly 42 is shortened, and the manufacturing cost and the use cost are reduced.

In this embodiment, an improved scheme of the lifting device is provided, compared to the way that the lifting device is directly linked with the flat plate and the flat plate is lifted and lowered directly by the stretching and contraction of the oil cylinder in the prior art, the way does not directly link the driving component 42 with the flat plate 3, but adopts the supporting seat 41 and the rotating arm 43 as carriers, and transmits the power of the driving component to the rotating arm through the conversion of the supporting seat and the rotating arm, and then the rotating arm rotates to drive the flat plate to lift (as shown in fig. 3), especially skillfully sets the connection point of the rotating arm and the supporting seat to be higher than the connection point of the rotating arm and the flat plate when the flat plate is in a horizontal position, and has the advantages that the small-amplitude stroke of the driving component can meet the large-amplitude lifting of the flat plate, taking the driving component as the oil cylinder as an example, the stroke of the oil cylinder can be greatly reduced, and not only the cost of the driving component can be reduced, but also can improve the lifting range of the flat plate, more importantly, can greatly reduce the weight born by the driving component, prolong the service life of the driving component and ensure safe and stable operation.

Specifically, the supporting seat 41 is optionally, but not limited to, shaped like an ear, and flanges are provided at the upper and lower ends thereof to provide a moving space for the rotating arm, the driving assembly and the plate, so as to avoid collision or limit movement of the rotating arm, the driving assembly and the plate. More specifically, the driving assembly 42 may be, but is not limited to, hydraulic, pneumatic, etc.; taking hydraulic pressure as an example, the hydraulic pressure is selected but not limited to include a hydraulic oil cylinder and a piston rod, so that the piston rod can move in the oil cylinder in a telescopic manner to drive the rotating arm to rotate, and further drive the flat plate to lift.

More specifically, the connection point D of the drive assembly to the pivot arm is preferably located at the upper end of the midpoint of the pivot arm. Based on the same reason, the method can further improve the lifting height of the flat plate under the same stroke of the driving assembly (such as an oil cylinder), and on one hand, the use cost of oil consumption and the like is reduced; on the other hand, the lifting range of the flat plate is improved.

More specifically, when the flat plate is in the horizontal position, the connection point a of the rotating arm 43 and the supporting seat 41, the connection point D of the driving assembly and the rotating arm, and the connection point B of the rotating arm 43 and the flat plate 3 are located on the same vertical line. When the flat plate 3 is located at a horizontal position, the three points form a straight line to form a self-locking mode, so that the flat plate 3 is further fixed, and the flat plate 3 is prevented from shaking randomly.

More specifically, above-mentioned tie point ABCD all can adopt the round pin hub connection to improve the flexibility of each junction, can not only reduce required drive power of drive assembly and oil consumption etc. can also accelerate the speed that the flat board goes up and down, improve the convenience of using.

More specifically, this round pin hub connection still is provided with elastic buffer to further reduce the friction of junction, further improve the flexibility of junction.

In another aspect, the present invention also provides a trailer comprising a body 1, tires 2, a platform 3, and a lifting device 4 of the present invention. Preferably, the trailer, optionally but not exclusively, comprises a lifting device 5 to facilitate towing of the faulty vehicle and to reduce manual labour. More preferably, the trailer may optionally, but not exclusively, include a damping device 6 to further increase the stability and safety of the raising and lowering of the bed.

The above trailer is created based on the above lifting device, the technical functions and advantages of the trailer are not described herein, and various technical features of the above embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features of the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the combination should be considered as being within the scope of the description in this specification.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A lifting device, comprising: the device comprises a supporting seat, a driving assembly and a rotating arm; one end of the rotating arm is connected with the supporting seat, and the other end of the rotating arm is connected with the flat plate; one end of the driving component is connected with the supporting seat, and the other end of the driving component is connected with the rotating arm so as to drive the rotating arm to rotate and further drive the flat plate to lift;

2. The lifting device as claimed in claim 1, wherein the supporting base is in the shape of an ear, and flanges are provided at upper and lower ends of the supporting base.

3. The lift device of claim 1, wherein the connection point of the drive assembly to the pivot arm is located at the upper end of the midpoint of the pivot arm.

4. The lift mechanism of claim 1, wherein the point of attachment of the arm to the support base, the point of attachment of the drive assembly to the arm, and the point of attachment of the arm to the plate are positioned on the same vertical line when the plate is in the horizontal position.

5. The lifting device as claimed in any one of claims 1 to 4, wherein the connection points between the support base, the driving member, the rotating arm and the plate are connected by a pin assembly.

6. The lifting device as claimed in claim 5, wherein an elastic buffer is further provided at the joint of the pin assembly.

7. A trailer comprising a body, tires, a platform and a lifting device as claimed in any one of claims 1 to 6; the lifting device is used for lifting the flat plate.

8. A trailer in accordance with claim 7, further comprising lifting means or/and damping means.