CN211644468U - Hydraulic lifting mechanism of car carrier - Google Patents

Abstract

The utility model discloses a hydraulic lift mechanism for a car carrier, comprising a chassis, a hydraulic cylinder, a safety arm, a long lift arm, a sliding block, a short lift arm and an upper platform; the bottom of the lift mechanism passes through a pin shaft It is fixed at the rear of the chassis, the top of the lifting mechanism is connected with the inclined track of the upper platform by means of slider connection, and a pair of lifting mechanisms are arranged opposite each other on both sides of the rear of the chassis to complete the lifting action together; The lifting arm, the safety arm and the slider are respectively hinged with the long lifting arm; when the safety arm is lifted to a certain height for operation, a safety pin is inserted into the pin hole on the safety arm to fix the lifting height. ensure safety. The lifting mechanism of the lifting mechanism has stable lifting action, high lifting efficiency, no lifting dead point, effectively preventing the occurrence of safety accidents, and has high safety performance.

Description

A hydraulic lift mechanism for a car carrier

technical field

The patent of the present invention relates to the technical field of lifting devices, in particular to a hydraulic lifting mechanism of a car carrier.

Background technique

When the lifting mechanism of the existing car carrier works, there are the following disadvantages in the lifting process: 1. When lifting to a certain angle, the upper platform is difficult to lift, resulting in difficulty in lifting under the rated working pressure of the hydraulic cylinder. rising situation. 2. During the lifting process, in order to continue the lifting, when the defect 1 occurs, it is necessary to increase the oil supply of the hydraulic cylinder, increase the thrust of the hydraulic cylinder, and pull the front column tightly on the upper platform to make the front column. It is subjected to a large pulling force, causing the front column to deform and move backwards. 3. When the angle with the greatest force is broken, the speed will undergo a sudden change, resulting in unstable lifting and potential safety hazards.

Utility model content

In view of the defects in the prior art, the utility model provides a hydraulic lifting mechanism, which can improve the lifting efficiency of the lifting system, and at the same time, the lifting action is stable, the installation is convenient, and the safety is high.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a hydraulic lift mechanism for a car carrier, comprising a chassis, a hydraulic cylinder, a safety arm, a long lift arm, a slider, a short lift arm, and an upper platform; the The hydraulic cylinder is connected with the chassis by a pin, and the piston rod of the hydraulic cylinder is connected with the lifting arm through the pin; the two ends of the lifting arm are respectively connected with the chassis and the slider through the pin; the slider is located on the slider of the upper platform In the guide rail; the short arm of the lifting short arm is hinged with the upper platform and the long arm respectively, and the pin shaft hinged with the upper platform is located in the inclined slot hole on the upper platform; the two ends of the safety arm are fixed on the chassis and the long arm through the pin shaft, In order to ensure safety, when lifting to a certain height to start loading or unloading, insert a safety pin on the safety arm to protect the hydraulic cylinder.

Further, the contact surface with the slider in the guide rail of the upper platform is an inclined surface, which is beneficial for the slider to slide backward during the lifting process.

Further, there is a certain gap between the lower baffle of the upper platform track and the slider to prevent the slider from being locked during operation.

Further, the slot hole at the rear of the upper platform is inclined, which is beneficial to reduce the pulling force of the upper platform on the front column during lifting.

Compared with the prior art, the beneficial effects of the patent of the present invention are: in the process of lifting, there will be no angle with large force, the lifting process is stable, and the speed will not change abruptly. In the process of lifting, the pulling force of the upper platform on the front column is reduced, the front column will not have large deformation and displacement, and the lifting efficiency of the lifting system is improved. At the same time, the lifting action is stable, easy to install and safe. high.

Description of drawings

Fig. 1 is the front view of the hydraulic lifting mechanism of the patent of the present invention; Fig. 2 is the partial half-section schematic diagram of the inner rail of the slider and the upper platform; Fig. 3 is the schematic diagram of the safety arm; Lifting long arm; 5 slider; 6 lifting short arm; 7 upper platform; 8 slider rail; 31 condom arm; 32 telescopic arm.

Detailed ways

The embodiments of the technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

As shown in FIG. 1 , the utility model discloses a hydraulic lifting mechanism, which includes a chassis 1 , a hydraulic cylinder 2 , a safety arm 3 , a long lifting arm 4 , a slider 5 , a short lifting arm 6 , and an upper platform 7 , Slider guide 8. The tail of the hydraulic cylinder 2, the lower end of the safety arm 3, and the lower end of the long lift arm 4 are all fixed on the chassis through pins. As shown in the figure, the piston rod of the hydraulic cylinder 2 and the upper end of the safety arm 3 are connected with the lifting arm 4 through the pin shaft, and the upper end of the supporting long arm 4 is connected with the slider 5 through the pin shaft, and the slider 5 is located on the upper platform 7 in the slider guide 8. As shown in FIG. 2 , the working surface of the sliding block and the guide rail is made into an inclined plane, so that the force on the sliding block 5 is beneficial to the lifting of the upper platform 7 . One end of the short lifting arm 6 is hinged with the long lifting arm 4 through a pin shaft, and the other end can slide freely in the inclined notch of the upper platform 7, which plays the role of auxiliary support, and the length of the short lifting arm 6 is related to the lifting. The distance from the hinge point of the long arm and the short arm to the hinge point of the slide of the long arm is close, which can prevent the interference of the long arm and the short arm during the lifting process. As shown in FIG. 3 , the safety arm 3 is composed of a condom arm 31, a telescopic arm 32 and a safety pin 33. The telescopic arm 32 is inside the condom arm 31 and can be freely retracted. The telescopic arm 32 has 8 holes, and the two can cooperate to The upper platform 7 can be lifted and fixed in 8 positions, which can meet the needs of transporting most cars. In addition, the number and position of the holes on the safety arm 3 can be processed according to the needs, so that the car can be lifted and fixed to any position. change.

Specific working process:

When the upper platform 7 needs to be lifted, the hydraulic cylinder 2 is extended to drive the lift arm 4 to swing upward around the hinge point between the lower end of the lift arm 4 and the chassis 1, and the lift arm 4 rotates while driving the slider 5 on the upper platform 7. The sliding block guide 8 moves backward, the sliding block 5 lifts the upper platform 7, the lifting work is mainly completed by the lifting long arm 4, and the lifting short arm 6 is mainly responsible for the auxiliary support work in the later stage. One end of the lifting arm 6 is initially located at the outermost side of the notch of the upper platform 7, and moves forward in the slot with the swing of the lifting arm 4, and the upper platform 7 is lifted under the action of the two lifting arms. Select an appropriate lift height for the height of the car. Driven by the lift arm 4, the safety arm 3 swings around the hinge point between the condom arm 31 and the chassis 1, and the telescopic arm 32 extends from the condom arm 31. When the upper platform 7 After rising to a suitable height, insert a safety pin 33 into the safety arm 3 to fix the length of the safety arm. The safety arm 3 plays the role of protecting the supporting hydraulic cylinder 2 and supporting the lifting arm 4 to ensure that the upper platform 7 remains in a proper position. .

When the lifting platform 7 needs to descend, the hydraulic cylinder 2 shrinks to drive the lifting arm 4 to rotate downward around the hinge point between the lower end of the lifting arm 4 and the chassis 1, and the lifting arm 4 rotates at the same time to drive the slider 5 on the upper platform 7. The slider track 8 moves forward, one end of the lifting arm 6 moves outward from the innermost side of the notch of the upper platform 7, and the upper platform 7 descends under the action of the two lifting arms until it descends to the lowest position.

This technical solution improves the safety and reliability of the lift mechanism of the car carrier, can stop at any height during the lifting process, has stable lifting action, high lifting efficiency, and effectively prevents the occurrence of safety accidents.

Claims (5)

1. A hydraulic lift mechanism for a car carrier, comprising a chassis (1), a hydraulic cylinder (2), a safety arm (3), a long lift arm (4), a slider (5), and a short lift arm (6) ), the upper platform (7), and the slider guide rail (8), characterized in that: the bottom of the lifting mechanism and the chassis (1) are fixed by means of pin shaft connection, and the lifting arm (4) passes through the slider (5) It is connected with the inclined track on the upper platform (7), and the two ends of the short lifting arm (6) are respectively connected with the long lifting arm (4) and the inclined slot hole of the upper platform (7) through the pin shaft. 2. A hydraulic lift mechanism for a car carrier according to claim 1, characterized in that the hinge point connecting the long lift arm (4) and the short lift arm (6) is connected to the slider (5) The distance from the center of mass is approximately equal to the length to the hinge point of the slotted holes of the lifting jib (6) and the upper platform (7). 3. A hydraulic lift mechanism for a car carrier according to claim 1, characterized in that the working surface in contact with the sliding block (5) and the upper platform (7) forms a certain angle with the horizontal plane, and the working surface is a bevel. 4 . The hydraulic lift mechanism for a car carrier according to claim 1 , wherein the slot hole of the upper platform ( 7 ) is an inclined slot hole. 5 . 5. The hydraulic lift mechanism for a car carrier according to claim 1, wherein the safety arm comprises a condom arm (31), a telescopic arm (32) and a safety pin (33), and the telescopic arm (32) ) can be telescopic in the condom arm (31), and there are 8 holes on the telescopic arm (32) for inserting the safety pin (33).

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