Folding and lifting chassis, method for folding and lifting the chassis, and trailer

Abstract

The present invention discloses a folding and lifting chassis, a method for folding and lifting the chassis, and a trailer. The folding and lifting chassis includes a front girder, a first connecting rod, a driving member, a rear girder, rear wheels, a two-force bar, and a second connecting rod. The first connecting rod is connected to the front girder, and then the rear girder is connected to the rear wheels through the second connecting rod. At the same time, the two-force bar is connected to the first connecting rod and the second connecting rod, and the driving member is arranged on the front girder to drive the first connecting rod to swing. Thus, the rear girder can be placed flat on the ground for a faulty vehicle to drive onto the rear girder, and at the same time, the rear girder can also lift the faulty vehicle to a set height to dock with the front girder.

Description

Technical Field

[0001] The present invention relates to the field of vehicle chassis, and particularly to a folding and lifting chassis, a method for folding and lifting the chassis, and a trailer. Background Art

[0002] A wrecker, also known as a tow truck, road rescue vehicle, or towing vehicle, has multiple functions such as lifting, pulling, and towing. It is mainly used for the emergency rescue of road breakdown vehicles and urban illegal vehicles. Currently, common wreckers on the market are equipped with a loading plate that is movably connected to the chassis. When the rear end of the loading plate descends to the ground, a ramp for the breakdown vehicle to climb is formed. The breakdown vehicle can then drive onto the loading plate through a towing device or by itself. As the rear section of the loading plate is lifted, the breakdown vehicle is placed on the wrecker, thus completing the wrecking work.

[0003] During the operation, since one end of the loading plate is in contact with the ground and the other end is in a raised state at a higher level from the ground, when loading goods or a breakdown vehicle, it is necessary to use a forklift or for the vehicle to climb onto the loading plate by itself, which requires more work and is very inconvenient during the operation process. Summary of the Invention

[0004] The main object of the present invention is to propose a folding and lifting chassis device and an automatic cleaning device, aiming to solve the problem that when existing vehicles are in operation, it is necessary to first load goods or a breakdown vehicle on an inclined loading plate, resulting in additional work.

[0005] To achieve the above object, the present invention proposes a folding and lifting chassis, which includes:

[0006] A front girder;

[0007] A first connecting rod, one end of which is hinged to the front girder;

[0008] A driving member for driving the first connecting rod to swing relative to the front girder;

[0009] A rear girder, one end of which is hinged to the end of the first connecting rod away from the front girder;

[0010] A suspension assembly including a rear wheel and a second connecting rod hinged to the rear wheel, and the end of the second connecting rod away from the rear wheel is hinged to the rear girder;

[0011] A two-force bar, one end of which is hinged to the first connecting rod and the other end is hinged to the second connecting rod.

[0012] In some embodiments, the hinge axis of the two-force bar and the first connecting rod is located between the hinge axes of the first connecting rod with the front girder and the rear girder respectively.

[0013] In some embodiments, the hinge axis of the two-force rod and the second connecting rod is located on one side of the connecting line of the hinge axes of the second connecting rod with the rear wheel and the rear frame respectively.

[0014] In some embodiments, the driving member includes an oil cylinder with one end hinged to the front frame and the other end hinged to the first connecting rod.

[0015] In some embodiments, the rear frame includes a raised state and a lowered state; in the raised state, the rear frame is lifted as the first connecting rod and the second connecting rod swing upward and docks with the front frame, and in the lowered state, the rear frame descends to the ground as the first connecting rod and the second connecting rod swing downward.

[0016] The present invention also provides a method for folding and lifting a chassis, which applies the above-mentioned folding and lifting chassis, and is characterized by including the following steps:

[0017] The driving member pushes the first connecting rod to swing downward, driving the end of the rear frame hinged to the first connecting rod to descend to the ground;

[0018] The two-force rod respectively hinged to the first connecting rod and the second connecting rod moves in conjunction, the second connecting rod swings downward, and the other end of the rear frame falls to the ground.

[0019] In some embodiments, the method for folding and lifting the chassis further includes the following steps:

[0020] The driving member pushes the first connecting rod to swing upward, driving the end of the rear frame hinged to the first connecting rod to rise;

[0021] The two-force rod respectively hinged to the first connecting rod and the second connecting rod moves in conjunction, the second connecting rod swings upward, causing the other end of the rear frame to rise.

[0022] The present invention also provides a trailer, which applies the above-mentioned method for folding and lifting the chassis.

[0023] The present invention connects the rear frame to the front frame through the first connecting rod, then connects the rear frame to the rear wheel through the second connecting rod, and at the same time connects the two-force rod to the first connecting rod and the second connecting rod, and sets the driving member on the front frame to drive the first connecting rod to swing. Thus, the rear frame can be moved to lie flat on the ground for a faulty vehicle to drive onto the rear frame, and at the same time, the rear frame can also move to lift the faulty vehicle to a set height and dock with the front frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the folding and lifting chassis in the lowered state in an embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the folding and lifting chassis in the raised state in an embodiment of the present invention;

[0026] Figure 3 This is a top view of the folding and lifting chassis in another embodiment of the present utility model.

[0027] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0028] Next, the solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0029] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back... are only used to explain the relative positional relationship and movement conditions between components in a specific posture, that is, as shown in the accompanying drawings. If this specific posture changes, then the directional indication will also change accordingly.

[0030] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0031] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention also provides a folding and lifting chassis. Referring to Figures 1 to 3 , the folding and lifting chassis includes:

[0033] Front main beam 1;

[0034] The first connecting rod 2, one end of which is hinged to the front main beam 1;

[0035] The driving member 3 is used to drive the first connecting rod 2 to swing relative to the front main beam 1;

[0036] The rear main beam 4, one end of which is hinged to the end of the first connecting rod 2 away from the front main beam 1;

[0037] A suspension assembly, comprising a rear wheel 5 and a second connecting rod 6 hinged to the rear wheel 5, wherein one end of the second connecting rod 6 away from the rear wheel 5 is hinged to the rear beam 4;

[0038] The second force rod 7 has one end hinged to the first connecting rod 2 and the other end hinged to the second connecting rod 6 .

[0039] In this embodiment, the driving member 3 includes a cylinder having one end hinged to the front beam 1 and the other end hinged to the first connecting rod 2. The rear beam 4 includes a lifting state and a lowering state; in the lifting state, the rear beam 4 is lifted as the first connecting rod 2 and the second connecting rod 6 swing upward and docks with the front beam 1; in the lowering state, the rear beam 4 is lowered to the ground as the first connecting rod 2 and the second connecting rod 6 swing downward.

[0040] In this embodiment, the rear beam 4 adopts a frame structure and a carrier plate for placing goods or faulty vehicles can be fixed on its upper surface. The left and right sides of the rear beam 4 are connected to the rear wheels 5 through the second connecting rod 6. One end of the second connecting rod 6 is hinged to the rear wheel 5, and the other end is hinged to the rear beam 4. Compared with the traditional vehicle chassis structure, the wheel axle connecting the two rear wheels is omitted, and the rear beam 4 can be raised and lowered between the two rear wheels. The driving member 3 can be selected as an oil cylinder, and the first connecting rod 2 and the second connecting rod 6 are connected by setting a two-force rod 7 to ensure that the second connecting rod 6 can be linked with the swing of the first connecting rod 2. After the oil cylinder retracts, the first connecting rod 2 swings up to a horizontal state, and the front end of the rear beam 4 is lifted. Due to the existence of the two-force rod 7, the pulling force of the two-force rod 7 will also pull the lower end of the second connecting rod 6 to swing upward, and the rear end of the rear beam 4 hinged to the lower end of the second connecting rod 6 is lifted, so that the rear beam and the goods or faulty vehicles thereon are lifted as a whole. When the oil cylinder is fully retracted, the pulling force of the oil cylinder keeps the two connecting rods in the lifted state, and the rear beam 4 is fully lifted.

[0041] The present invention connects the rear beam 4 to the front beam 1 through the first connecting rod 2, and then connects the rear beam 4 to the rear wheel 5 through the second connecting rod 6, and simultaneously connects the first connecting rod 2 and the second connecting rod 6 through the two-force rod 7, and sets the driving member 3 on the front beam 1 to drive the first connecting rod 2 to swing, thereby the rear beam 4 can be laid flat on the ground for the faulty vehicle to drive onto the rear beam 4, or the cargo can be directly loaded on the rear beam, without the need to lift the cargo or the faulty vehicle separately, and then the rear beam 4 is driven to be lifted as a whole by the oil cylinder. The problem that the existing tow truck needs to load the cargo or the faulty vehicle on the inclined loading plate first when operating, which generates extra work, is solved.

[0042] In some embodiments, the hinge axis of the two-force rod 7 and the first connecting rod 2 is located between the hinge axes of the first connecting rod 2 and the front beam 1 and the rear beam 4 respectively. The hinge axis of the two-force rod 7 and the second connecting rod 6 is located on one side of the line connecting the second connecting rod 6 and the hinge axes of the rear wheel 5 and the rear beam 4 respectively. The first connecting rod 2, the second connecting rod 6, the rear beam 4 and the two-force rod 7 form a four-bar linkage. By setting the two-force rod 7 to connect the first connecting rod 2 and the second connecting rod 6, it is ensured that the second connecting rod 6 can move with the swing of the first connecting rod 2. In addition, a buffer spring can be set at the hinge of the first connecting rod 2 and the rear wheel 5, so that the first connecting rod 2 and the rear wheel form a suspension assembly. Even if the road conditions are bumpy, the rear beam 4 will remain relatively stable after the suspension assembly jumps.

[0043] The present invention also provides a chassis folding and lifting method, which uses the above-mentioned folding and lifting chassis, and comprises the following steps:

[0044] The driving member pushes the first connecting rod to swing downward, driving the end of the rear beam hinged to the first connecting rod to descend to the ground;

[0045] The two force rods respectively hinged with the first connecting rod and the second connecting rod are linked, the second connecting rod swings down, and the other end of the rear beam falls to the ground.

[0046] The present invention connects the rear beam 4 to the front beam 1 through the first connecting rod 2, and then connects the rear beam 4 to the rear wheel 5 through the second connecting rod 6. At the same time, the two force rods 7 connect the first connecting rod 2 and the second connecting rod 6, and the driving member 3 is set on the front beam 1 to drive the first connecting rod 2 to swing. As a result, the rear beam 4 can be laid flat on the ground to allow a faulty vehicle to drive onto the rear beam 4, or the cargo can be directly loaded on the rear beam without the need to lift the cargo or the faulty vehicle for loading. This solves the problem that the existing tow truck needs to load the cargo or the faulty vehicle on an inclined loading plate first when operating, which generates additional work.

[0047] In some embodiments, the chassis folding and lifting method further includes the following steps:

[0048] The driving member pushes the first connecting rod to swing upward, driving one end of the rear beam hinged to the first connecting rod to rise;

[0049] The two force rods respectively hinged with the first connecting rod and the second connecting rod are linked, and the second connecting rod is swung upward to make the other end of the rear beam rise.

[0050] In this embodiment, the first link 2, the second link 6, the rear beam 4 and the two-force bar 7 form a four-bar linkage. By arranging the two-force bar 7 to connect the first link 2 and the second link 6, it is ensured that the second link 6 can follow the swing of the first link 2. The hinge axis of the two-force bar 7 and the first link 2 is located between the hinge axes of the first link 2 with the front beam 1 and the rear beam 4 respectively. The hinge axis of the two-force bar 7 and the second link 6 is located on one side of the connection line of the hinge axes of the second link 6 with the rear wheel 5 and the rear beam 4 respectively. When the first link 2 swings upward to the horizontal state, the front end of the rear beam 4 is lifted. Due to the existence of the two-force bar 7, the tension of the two-force bar 7 will also pull up the lower end of the second link 6 to swing upward, and the rear end of the rear beam 4 hinged to the lower end of the second link 6 is lifted, realizing the overall lifting of the rear beam and the goods or the faulty vehicle thereon. When the oil cylinder is fully retracted, the tension of the oil cylinder keeps the two links in the lifted state, and the rear beam 4 is fully lifted.

[0051] The present invention also provides a trailer applying the above-mentioned chassis folding and lifting method. By forming a four-bar linkage with the first link 2, the second link 6, the rear beam 4 and the two-force bar 7, the telescopic movement of the oil cylinder drives the downward or upward swing of the first link 2. At the same time, driven by the two-force bar 7, the lowering or lifting of the rear beam 4 is realized. After the rear beam 4 is placed flat on the ground, it is convenient to load the goods or the faulty vehicle on the rear beam 4.

[0052] The folding and lifting chassis proposed by the present invention is applicable to vehicles, including but not limited to engineering vehicles, freight trucks, trucks, trailers, etc. Due to having the folding and lifting chassis structure of the present invention or the chassis folding and lifting method of the present invention, such types of vehicles thus have the beneficial effects described in the present invention.

[0053] The above are only partial or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the content of the specification and drawings of the present invention under the overall concept of the present invention, or direct / indirect applications in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A folding and lifting chassis, characterized in that, include: front beam; A first connecting rod, one end of which is hinged to the front beam; A driving member, used for driving the first connecting rod to swing relative to the front beam; A rear beam, hinged to an end of the first connecting rod away from the front beam; A suspension assembly, comprising a rear wheel, and a second connecting rod hinged to the rear wheel, wherein an end of the second connecting rod away from the rear wheel is hinged to the rear beam; A two-force rod has one end hinged to the first connecting rod and the other end hinged to the second connecting rod.

2. The folding and lifting chassis according to claim 1, wherein The hinge axis between the two force rods and the first connecting rod is located between the hinge axes of the first connecting rod and the front beam and the rear beam respectively.

3. The folding and lifting chassis according to claim 2, wherein, The hinge axis between the two force rods and the second connecting rod is located on one side of the connection line between the second connecting rod and the hinge axes of the rear wheel and the rear beam respectively.

4. The folding and lifting chassis according to claim 3, characterized in that, The driving member comprises an oil cylinder with one end hinged to the front beam and the other end hinged to the first connecting rod.

5. The foldable lifting chassis according to any one of claims 1-4, characterized in that, The rear beam includes a raised state and a lowered state; in the raised state, the rear beam is lifted as the first link and the second link swing upward, and in the lowered state, the rear beam is lowered to the ground as the first link and the second link swing downward.

6. A chassis folding and lifting method, applied to the folding and lifting chassis according to any one of claims 1 to 5, characterized in that, The following steps are involved: The driving member pushes the first connecting rod to swing downward, driving the end of the rear beam hinged to the first connecting rod to descend to the ground; The two force rods respectively hinged with the first connecting rod and the second connecting rod are linked, the second connecting rod swings down, and the other end of the rear beam falls to the ground.

7. The chassis folding and lifting method according to claim 6, characterized in that, The chassis folding and lifting method further comprises the following steps: The driving member pushes the first connecting rod to swing upward, driving the end of the rear beam hinged to the first connecting rod to rise; The two force rods respectively hinged with the first connecting rod and the second connecting rod are linked, and the second connecting rod is swung upward to make the other end of the rear beam rise.

8. A trailer, characterized in that, The chassis folding and lifting method according to claim 6 or 7 is applied, or the folding and lifting chassis according to any one of claims 1-5 is provided.

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