CN210591225U

CN210591225U - Axle suspension structure of self-adaptive multi-shaft wheeled vehicle

Info

Publication number: CN210591225U
Application number: CN201921509352.4U
Authority: CN
Inventors: 马敏
Original assignee: Nanjing Ping'an Heavy Lifting Co Ltd
Current assignee: Nanjing Ping'an Heavy Lifting Co Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-05-22
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses an axle suspension structure of self-adaptation multiaxis wheeled vehicle: the automobile seat comprises a frame and an axle, and comprises a lever arm, wherein the middle part of the lever arm is hinged on the frame, and two ends of the lever arm are respectively provided with a group of axles. The utility model discloses an axle passes through the lever arm and installs on the frame, and the lever arm can be according to the condition on road surface self-adjusting rotation angle, can guarantee the good contact of wheel and ground of each axle to realize having multiaxis wheeled vehicle to the adaptability on rugged and uneven ground, improved the efficiency of going through of multiaxis wheeled vehicle greatly, also can effectively avoid the damage of multiaxis wheeled vehicle axle and relevant part on the chassis, avoid the occurence of failure.

Description

Axle suspension structure of self-adaptive multi-shaft wheeled vehicle

Technical Field

The utility model relates to an engineering vehicle technical field, concretely relates to axle suspension structure of self-adaptation multiaxis wheeled vehicle.

Background

The large-tonnage crane has wide operation area, is mostly distributed in terrain complex areas such as mountainous regions, hills, grasslands and the like, has large road surface fluctuation on the occasions, and has higher requirements on the transition and climbing capacity of the heavy-load state of the vehicle.

At present, a 5-9-shaft integral rigid chassis is adopted for a large-tonnage crane, the crane body is long, a driving shaft is arranged on a plurality of front shafts of a vehicle, when a mountain road with steep upper and lower slopes and small approach slope is used, the problems that part of the driving shaft is suspended and the rest of the driving shaft provides insufficient power are easy to occur, the service performance of the whole crane on the mountain road is seriously influenced, and the transition efficiency is reduced. When the axle is severely suspended, the bearing of part of the axle exceeds the allowable bearing limit, which causes damage to related components on the chassis of the crane, causes inconvenience to users and brings corresponding economic loss. In particular, the crane can pass through a V-shaped road formed by a guide slope and a suspension bridge in the ferry process, the suspension problem of the axle can be more serious, and the condition that the vehicle head touches the road surface to cause the traffic failure can also occur under the condition of overlarge slope.

Patent document 1 (CN 1171334A) discloses a vehicle roll reducing device, which realizes the adjustment of the height of an axle by arranging a hydraulic cylinder supported on the axle, and the method has the defects that the stroke of the hydraulic cylinder is limited and the distance between the axle and a chassis is limited, so the adjustment range is limited; patent document 2 (CN 103522865A) is an independent suspension structure similar in principle to patent document 1. Patent document 3 (CN 106698210B) discloses a modular flexible chassis, its application and its crane, where the chassis is composed of a plurality of modules with different functions, and different combinations and connection modes are used among the modules to realize flexibility and modularization of the vehicle body.

SUMMERY OF THE UTILITY MODEL

For the self-adaptability that improves the crane truck body to rugged and uneven ground, the utility model provides an axle suspension structure of self-adaptation multiaxis wheeled vehicle.

The utility model adopts the technical scheme as follows: the axle suspension structure of the self-adaptive multi-axle wheeled vehicle comprises a frame and an axle, and comprises a lever arm, wherein the middle part of the lever arm is hinged on the frame, and two ends of the lever arm are respectively provided with one group of the axle.

The utility model has the advantages that: the utility model discloses an axle passes through the lever arm and installs on the frame, and the lever arm can be according to the condition on road surface self-adjusting rotation angle, can guarantee the good contact of wheel and ground of each axle to realize having multiaxis wheeled vehicle to the adaptability on rugged and uneven ground, improved the efficiency of going through of multiaxis wheeled vehicle greatly, also can effectively avoid the damage of multiaxis wheeled vehicle axle and relevant part on the chassis, avoid the occurence of failure.

Preferably: and a group of middle axles are arranged below a hinge point of the middle part of the lever arm of the frame.

Preferably: and a structure which is stressed by a hydraulic cylinder and buffered by an elastic piece is arranged between the frame and the middle axle, the upper end of the hydraulic cylinder is supported at the bottom of the frame, and the lower end of the hydraulic cylinder is supported at the side surface of the middle axle.

Preferably: the hydraulic cylinder is characterized in that the middle axle is provided with an omega-shaped suspension bracket which comprises a bulge ring in the middle and support lugs on two sides, the bulge ring is mounted on the middle axle in a suspension manner, the lower end of the hydraulic cylinder is mounted on the support lugs, and the height of the support lugs is lower than that of the axis of the middle axle.

Preferably: the middle part of the main rocker arm is hinged to the frame, and the middle part of the lever arm is hinged to two end parts of the main rocker arm.

Preferably: the frame is of a two-section combined structure, and the two sections of the frame are flexibly connected.

Drawings

Fig. 1 is a schematic view of a first embodiment of the present invention.

Fig. 2 is a schematic diagram of a second embodiment of the present invention.

Fig. 3 is a schematic view of an intermediate axle according to the second embodiment of the present invention.

Fig. 4 is a schematic view of a suspension bracket according to the second embodiment of the present invention.

Fig. 5 is a schematic diagram of a third embodiment of the present invention.

Fig. 6 is a schematic view of the first and second embodiments of the present invention applied to a 5-axis crane.

Fig. 7 is a schematic view of the second and third embodiments of the present invention applied to a 7-axis crane.

Fig. 8 is a schematic view of the front driving according to the fourth embodiment of the present invention.

Fig. 9 is a schematic view of the 8-axle crane of the present invention running on a V-shaped road surface.

Fig. 10 is a schematic view of the 8-axle crane of the present invention running on an inverted V-shaped road surface.

Fig. 11 is a schematic illustration of a five cab lift embodiment of the present invention.

Frame 1, axle 2, middle axle 2a, lever arm 3, hydraulic cylinder 4, elastic component 5, suspension bracket 6, bulge loop 601, support ear 602, main rocker arm 7.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

In the first embodiment, as shown in fig. 1: an axle suspension structure of a self-adaptive multi-axle wheeled vehicle comprises a frame 1 and an axle 2, and comprises a lever arm 3, wherein the middle part of the lever arm 3 is hinged on the frame 1, and two ends of the lever arm 3 are respectively provided with a group of axles 2. The axle 2 of the first embodiment is installed on the frame 1 through the lever arm 3, and the lever arm 3 can adjust the rotation angle according to the condition on the road surface by itself, so that the good contact between the wheels of each axle 2 and the ground can be ensured, the self-adaptive capacity of the multi-axle wheeled vehicle to the rugged ground is realized, the running passing efficiency of the multi-axle wheeled vehicle is greatly improved, the damage of relevant parts on the axle and the chassis of the multi-axle wheeled vehicle can be effectively avoided, and the accident is avoided.

In the second embodiment, as shown in FIGS. 2 to 4: a group of middle axles 2a are arranged on the frame 1 below a middle hinge point of the lever arm 3. The second embodiment is an improvement of the first embodiment, the principle is similar, and the difference is that an additional middle axle 2a is arranged to meet the bearing requirements of different crane bodies.

In the second embodiment, as shown in FIGS. 2 to 4: a structure which is stressed by a hydraulic cylinder 4 and buffered by an elastic piece 5 is arranged between the frame 1 and the middle axle 2a, the upper end of the hydraulic cylinder 4 is supported at the bottom of the frame 1, and the lower end is supported at the side surface of the middle axle 2 a. The hydraulic cylinder 4 of the second embodiment is not supported directly above the intermediate axle 2a, but on the side of the intermediate axle 2a, which ensures that the hydraulic cylinder 4 has a greater size and stroke, so that the intermediate axle 2a has a greater adjustment stroke in the vertical direction, and thus can be matched to the adjustment range of the lever arm 3. The elastic member 5 may be a mechanical spring or a pneumatic cylinder.

In the second embodiment, as shown in FIGS. 2 to 4: the middle axle 2a is provided with an omega-shaped suspension bracket 6 which comprises a raised ring 601 in the middle and support lugs 602 on two sides, the raised ring 601 is mounted on the middle axle 2a in a suspension manner, the lower end of the hydraulic cylinder 4 is mounted on the support lugs 602, and the height of the support lugs 602 is lower than that of the axis of the middle axle 2 a. The bulge loop 601 of the suspension bracket 6 of the embodiment has good stability and convenient installation in the installation with the two ends of the axle 2; and the support ears 602 are symmetrically arranged and used as support members at the lower end of the hydraulic cylinder 3, so that the stress is uniform and stable support can be provided.

In example three, as shown in fig. 5: the bicycle frame is characterized by further comprising a main rocker arm 7, wherein the middle part of the main rocker arm 7 is hinged to the bicycle frame 1, and the middle part of the lever arm 3 is hinged to two end parts of the main rocker arm 7. The second embodiment is another improvement of the first embodiment, the principle is similar, and the four-shaft support is provided, so that the selectivity of the suspension mode of the crane body is further improved.

The first, second and third embodiments actually provide axle suspension support structures of two-axis, three-axis and four-axis respectively, and the requirements of the integral rigid chassis of the 5-8-axis crane can be met by combining the two axle suspension support structures with each other, and the requirements of the 9-axis crane can be met by combining the three axle suspension support structures. As shown in fig. 6 and 7, which are schematic diagrams of a combination of a 5-axis crane and a 7-axis crane, the structures of other multi-axis cranes are similar, and are not listed here.

In the fourth embodiment, as shown in fig. 8: the frame 1 is of a two-section combined structure, and the two sections of the frame 1 are flexibly connected. The fourth structure of the embodiment is similar to the flexible chassis structure of patent document 3, and can improve the adaptability of the vehicle to rough road surfaces. The chain line and the solid line in fig. 8 respectively indicate different two-stage frames 1.

As shown in FIGS. 9 to 10, the schematic representation of the crane with the 8-shaft integral rigid chassis on the uneven road surface is shown.

Fig. 9 shows a V-shaped road surface, typically a road formed by a guide slope and a suspension bridge in a ferry, in which each wheel is in contact with the road surface by the automatic adaptation of the lever arm 3 and the main rocker arm 7 to the road surface, so as to ensure that each axle 2 is uniformly stressed; particularly, the headstock of the crane shown in fig. 11 can be arranged to be of a lifting structure, and is lifted in advance before entering a V-shaped road surface, so that a cab of the headstock is prevented from touching the road surface, and the running safety is ensured.

Fig. 10 shows an inverted V-shaped road surface, and the principle is similar. The fig. 9-10 are only illustrated by 8-shaft cranes, and in fact, the structure can be widely applied to 5-8-shaft integral cranes.

It should be noted that, necessary damping or damping devices may be disposed between the lever arm 3 and the vehicle frame 1, between the main rocker arm 7 and the vehicle frame 1, and between the lever arm 3 and the main rocker arm 7 to avoid vehicle body jolt, and the damping or damping devices may refer to the suspension structure of the existing engineering vehicle, and may also refer to the structure of the intermediate axle 2a in the second embodiment.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Obvious changes or variations coming within the spirit of the invention are intended to be covered by the scope of the invention.

Claims

1. The utility model provides an axle suspension structure of self-adaptation multiaxis wheeled vehicle, includes frame (1) and axle (2), its characterized in that: the automobile frame comprises a lever arm (3), the middle part of the lever arm (3) is hinged to the automobile frame (1), and two ends of the lever arm (3) are respectively provided with a group of axles (2).

2. The axle suspension structure of an adaptive multi-axle wheeled vehicle according to claim 1, characterized in that: a group of middle axles (2 a) are mounted on the frame (1) below a hinge point in the middle of the lever arm (3).

3. The axle suspension structure of an adaptive multi-axle wheeled vehicle according to claim 2, characterized in that: a structure which is stressed by a hydraulic cylinder (4) and buffered by an elastic piece (5) is arranged between the frame (1) and the middle axle (2 a), the upper end of the hydraulic cylinder (4) is supported at the bottom of the frame (1), and the lower end of the hydraulic cylinder is supported at the side surface of the middle axle (2 a).

4. The axle suspension structure of an adaptive multi-axle wheeled vehicle according to claim 3, wherein: the suspension bracket (6) is arranged on the middle axle (2 a) and comprises a raised ring (601) in the middle and support lugs (602) on two sides, the raised ring (601) is mounted on the middle axle (2 a) in a hanging manner, the lower end of the hydraulic cylinder (4) is mounted on the support lugs (602), and the height of the support lugs (602) is lower than that of the axis of the middle axle (2 a).

5. The axle suspension structure of an adaptive multi-axle wheeled vehicle according to claim 1, characterized in that: the bicycle frame is characterized by further comprising a main rocker arm (7), the middle of the main rocker arm (7) is hinged to the bicycle frame (1), and the middle of the lever arm (3) is hinged to two end portions of the main rocker arm (7).

6. The axle suspension structure of an adaptive multi-axle wheeled vehicle according to claim 1, characterized in that: the frame (1) is of a two-section combined structure, and the two sections of the frame (1) are flexibly connected.