Multi-point supporting structure for driving and crane

Abstract

The invention discloses a multi-point supporting structure for driving, which comprises a cab, an engine, accessories of the engine and a suspension arm bracket, a supporting point auxiliary bracket is additionally arranged on an upper vehicle suspension arm behind the cab, the upper vehicle weight is transmitted to a chassis frame through three supporting points, and the auxiliary bracket is connected with the frame through bolts. The stress state of the frame is changed, and the deformation condition of the frame is reduced, so that the vibration state of a cab is relieved, and the comfort of a driver and passengers is improved.

Description

Technical Field

[0001] The invention relates to the field of cranes, and in particular to a traveling multi-point support structure and a crane. Background Art

[0002] Multi-point support structure: refers to a vehicle with more than or equal to two support structures for the vehicle's crane arms. Vehicle transfer: After the crane completes the lifting task at one construction site, it is transferred to another construction site for lifting operations. Announcement status: refers to a vehicle state that meets national standards and has been certified by relevant departments and can be driven on the road.

[0003] Short-distance vehicle transfer, that is, heavy-load transfer, at this time, the vehicle will not be disassembled due to the short transfer distance, and the vehicle will often be transferred as a whole, that is, carrying certain parts, such as outriggers, turntables, booms and other large parts. Long-distance vehicle transfer, that is, vehicle transfer in the announced state, at this time, the vehicle needs to be on the road, and the vehicle must meet the announced state. Some parts will be disassembled so that the vehicle's own weight and axle load must meet the standard requirements and the announced state.

[0004] The existing all-terrain crane products, especially the super-large tonnage products, have a long total length of about 20 to 30 meters. When the vehicle is transferred, it is usually carried on the vehicle. The front part of the vehicle is arranged with the cab, engine and its accessories, so the position of the boom bracket is arranged at the back. The length from the boom bracket to the front end of the vehicle is about 10 meters.

[0005] When the vehicle is in motion, the vehicle's deadweight is transferred to the chassis frame through the boom bracket. The frame will be deformed due to the force, and the forward part of the boom bracket will be tilted upward, so that the tires at the first and second bridges are less stressed. When the vehicle is in motion, the front cab position will vibrate. When the vehicle is in a short-distance transfer, the vehicle is in a complete state, the deadweight is large, and the vehicle is moving slowly, so the vibration of the cab position is not obvious, and the driver's driving comfort is acceptable; but when the vehicle is in a long transfer, it is only driven with the basic arm state, the center of gravity of the vehicle moves backward, the weight in the front is light, the frame deformation is large, and the vehicle speed reaches 50-60 kilometers per hour at this time, so the vibration of the cab position is obvious, and sometimes this vibration will resonate with the vibration caused by the bumpy road, and the driver's driving comfort is very poor.

[0006] Therefore, it is necessary to develop new multi-point support structures and cranes for driving in a targeted manner to reduce frame deformation, alleviate cab vibration, and improve vehicle driving comfort. Summary of the invention

[0007] Purpose of the invention: In view of the shortcomings and defects of the prior art, the present invention provides a multi-point support structure and a crane for traveling, which can reduce the deformation of the frame by changing the stress state of the frame, thereby alleviating the vibration state of the cab and improving the comfort of the driver and passengers.

[0008] Technical solution: A multi-point support structure for driving of the present invention includes a cab, an engine and its accessories and a boom bracket, and is characterized in that an auxiliary support bracket is added to the vehicle boom behind the cab, the vehicle weight is transmitted to the chassis frame through three support points, and the auxiliary support is connected to the frame by bolts.

[0009] Wherein, the auxiliary bracket is provided with an adjustment gasket for height adjustment, and the weight of the upper vehicle is transferred to the lower vehicle by the boom bracket and the auxiliary bracket.

[0010] Wherein, the boom bracket and the auxiliary bracket respectively support part of the weight of the vehicle.

[0011] Wherein, the boom bracket is divided into two parts, the lower part is connected to the frame by bolts, and the upper part is connected by a rotating pin.

[0012] When the vehicle is traveling with its arm, the upper part of the boom bracket rotates upwards to support the boom on the vehicle; when the vehicle is performing lifting operations, the upper part rotates to the side of the lower part to lower the height of the boom bracket to ensure the vehicle's rotation operation.

[0013] Use a crane with a multi-point support structure for travel.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: By increasing the support points of the boom, the boom can be supported at multiple points, changing the force form of the frame, reducing the deformation of the frame, thereby alleviating the vibration of the cab and improving driving comfort. The multi-point support of the boom makes the front section of the frame evenly stressed, and the reliability of the frame is improved. The rotating structure of the boom bracket makes it convenient and quick to switch the height of the vehicle in the driving and lifting operation states, improving the humanized design. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a supporting structure and a crane in the prior art;

[0016] Figure 2 It is a structural schematic diagram of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the adjusting gasket of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the rotating shaft of the present invention;

[0019] In the figure, 1 is the cab; 2 is the engine and its accessories; 3 is the boom bracket; 4 is the auxiliary bracket; 5 is the adjustment gasket; and 6 is the rotating pin. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] like Figure 1-2 A supporting point auxiliary bracket 4 is added to the vehicle arm behind the cab. The vehicle weight is transferred to the chassis frame through three supporting points. Since the auxiliary bracket 4 is located forward, the deformation of the front section of the frame is reduced during driving, the tire contact point does not change much, and the vibration of the cab is greatly improved. The auxiliary bracket 4 is connected to the frame by bolts.

[0022] like Figure 3 The auxiliary bracket 4 is arranged with an adjustable gasket 5 which can be adjusted in height, which is used to ensure that the weight of the vehicle is mainly transferred to the vehicle under the boom bracket 3. The auxiliary bracket 4 can only support part of the weight of the vehicle. Although it is only part of the weight, it can also alleviate the vibration of the cab and improve the comfort of the cab.

[0023] like Figure 4 The boom bracket 3 has a rotation function. The boom bracket 3 is divided into two parts, the lower part is connected to the vehicle frame by bolts, and the upper part is connected by a rotating pin 6. When the vehicle is traveling with the arm, the upper part rotates to the top to support the vehicle boom; when the vehicle is performing a hoisting operation, the upper part rotates to the side of the lower part to lower the height of the boom bracket 3 to ensure the vehicle rotation operation.

[0024] The multi-point support structure and crane for traveling of the present invention, and the multi-point support structure of the vehicle arm, change the stress state of the vehicle frame and reduce the deformation of the vehicle frame. The auxiliary bracket is arranged with an adjustable height adjustment gasket, which can not only ensure that the front support point shares a part of the weight of the vehicle, but also ensure the possibility of the front section of the frame itself being damaged due to the problem of frame space arrangement and the strength cannot bear the weight of the vehicle alone. The rotating structure of the arm bracket makes the bracket height switching more convenient and quick.

[0025] The present invention increases the support points of the boom, so that the boom can provide multi-point support, change the force form of the frame, reduce the deformation of the frame, thereby alleviating the vibration of the cab and improving the driving comfort. The multi-point support of the boom makes the front section of the frame evenly stressed, and the reliability of the frame is improved. The rotating structure of the boom bracket makes it convenient and quick to switch the height of the vehicle in the driving and lifting operation states, improving the humanized design.

Claims

1. A multi-point support structure for traveling, comprising a cab (1), an engine and its accessories (2) and a boom support (3), characterized in that: A supporting point auxiliary bracket (4) is added to the vehicle mounting arm behind the cab (1), and the vehicle mounting weight is transferred to the chassis frame through three supporting points, and the auxiliary bracket (4) is connected to the frame through bolts.

2. The multi-point support structure for traveling according to claim 1, characterized in that: The auxiliary bracket (4) is provided with an adjustment gasket (5) for adjusting the height, and the weight of the upper vehicle is transferred to the lower vehicle via the boom bracket (3) and the auxiliary bracket (4).

3. The multi-point support structure for traveling according to claim 2, characterized in that: The boom bracket (3) and the auxiliary bracket (4) respectively support part of the weight of the vehicle.

4. The multi-point support structure for traveling according to claim 1, characterized in that: The boom bracket (3) is divided into two parts, the lower part is connected to the vehicle frame via bolts, and the upper part is connected via a rotating pin (6).

5. The multi-point support structure for traveling according to claim 4, characterized in that: When the vehicle is traveling with the arm, the upper part of the boom bracket (3) rotates upward to support the vehicle boom; when the vehicle is performing a lifting operation, the upper part rotates to the side of the lower part to lower the height of the boom bracket (3) to ensure the vehicle rotation operation.

6. A crane using the traveling multi-point support structure according to any one of claims 1 to 5.

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