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EP-4230823-B1 - OPERATION VEHICLE

EP4230823B1EP 4230823 B1EP4230823 B1EP 4230823B1EP-4230823-B1

Inventors

  • DENG, Biao
  • XU, Dapeng
  • LI, JIANGBO

Dates

Publication Date
20260506
Application Date
20210629

Claims (4)

  1. An operation vehicle, comprising a vehicle body and a cab (300) provided at a front end of the vehicle body, and further comprising a boom device (100) provided on the vehicle body, wherein the boom device (100) comprises at least seven booms hinged end to end in sequence, and when the boom device (100) is in a folded state, a fifth boom (5) and a sixth boom (6) are located on the same straight line, a seventh boom (7) is located below the sixth boom (6), and end portions of at least two booms in the seven booms are located above the cab (300); characterized in that , a fourth boom (4) is a boom that bends downwards in a height direction, wherein a head end of a fourth boom (4) is located below a third boom (3), and a tail end of the fourth boom (4) is located above the third boom (3) and above the cab (300).
  2. The operation vehicle of claim 1, wherein the operation vehicle further comprises a rotary table (200) arranged on the vehicle body, the rotary table (200) is arranged on a front part or a middle part of the vehicle body, a head end of a first boom (1) is connected with the rotary table (200), and a head end of the fifth boom (5) is connected to the tail end of the fourth boom (4) and located above the cab (300).
  3. The operation vehicle of claim 2, wherein the rotary table (200) is arranged on a front part of the vehicle body, and a hinged point between the rotary table (200) and the first boom (1) is located above the cab (300).
  4. The operation vehicle of claim 3, wherein, when the boom device is in a folded state, a second boom (2) is located below the first boom (1), a head end of a third boom (3) is located between the first boom (1) and the second boom (2), and the fifth boom (5), the sixth boom (6) and the seventh boom (7) are all located above the fourth boom (4), wherein the first boom (1), the second boom (2) and the head end of the third boom (3) are folded in a first vertical plane, a tail end of the third boom (3), the fourth boom (4) and the fifth boom (5) are folded in a second vertical plane, the third boom (3) is a corner-turning boom in that the third boom (3) transitions from within the first vertical plane to within the second vertical plane.

Description

The present application claims the priority of Chinese Patent Application No. 202011314762.0, filed with the Chinese Patent Office on November 20, 2020 and entitled "Operation Vehicle". TECHNICAL FIELD The present application relates to the technical field of pumping equipment, in particular to an operation vehicle. Operation vehicles are known from the documents CN 203 050 124 U and CN 102 182 319 A, which show operation vehicles comprising a vehicle body and a cab provided at a front end of the vehicle body, and further comprising a boom device provided on the vehicle body. BACKGROUND A concrete pump vehicle is provided with a rotary table and a boom device arranged on the rotary table. The boom device includes a plurality of booms, and when being driven by a driving device, the plurality of booms can be expanded, converged, rotated and folded. The boom device is fixed with a conveying pipe, and the conveying pipe moves along with the boom device, to convey concrete to designated positions. When a concrete pump vehicle is in a non-working state, a plurality of booms are folded to possibly reducing space occupied by the concrete pump vehicle. When the boom device is in a folded state, since the boom device is limited in a height direction, a space for arrangement in a vertical direction is small. Therefore, making full use of a space in a vertical direction to compactly fold the boom device is crucial for increasing a total length of the boom device and improving flexibility of material distribution of the boom device. At present, folding manners of a boom device of a concrete pump vehicle mainly include an R-type manner, a Z-type manner and an RZ-type manner. The R-type folding manner refers to a folding manner in which a plurality of booms are folded towards one direction such as a clockwise direction through a manner of winding or intervolving or expanded towards an opposite direction such as an anticlockwise direction. The Z-type folding manner refers to a folding manner in which a plurality of booms are folded or expanded in directions which are opposite in sequence. An RZ type is a combination of an R type and a Z type. A tail end structure of a pump vehicle boom in the prior art is mainly in two forms, in one form, as shown in Fig. 1, two booms at tail ends are two whole booms, in another form, as shown in Fig. 2, the last boom is disconnected by two sections, an expanded angle is about 90°-180°, and the penultimate boom is a whole boom. For a tail end structure of the above boom, when the first structural form is adopted, two booms at tail ends are both whole booms. For long-boom pump trucks (pump trucks with boom lengths being greater than 50 meters), two booms are tail ends are too long, thereby greatly reducing construction flexibility; when the second structural form is adopted, although the last boom is disconnected by two sections, since an expanded angle is only 90°-180°, and the penultimate boom is too long, the construction flexibility is also greatly limited. SUMMARY OF THE INVENTION The present application aims at solving at least one of the technical problems existing in the prior art or in related techniques. To this end, the present application aims at overcoming the defect in the prior art that the flexibility of boom construction of the pump vehicle is low, so as to provide an operation vehicle. To achieve the above object, technical solutions of the present application provides an operation vehicle according to claim 1, including a vehicle body and a cab provided at a front end of the vehicle body, and further including a boom device provided on the vehicle body, the boom device includes at least seven booms hinged end to end in sequence, wherein when the boom device is in a folded state, a fifth boom and a sixth boom are both located on the same straight line, a seventh boom is located below the sixth boom, and end portions of at least two booms in the seven booms are located above the cab. Optionally, the operation vehicle further includes a rotary table arranged on the vehicle body, the rotary table is arranged on a front part or a middle part of the vehicle body, a head end of a first boom is connected with the rotary table, and a tail end of the fourth boom and a head end of the fifth boom are located above the cab. Optionally, the rotary table is arranged at a front part of the vehicle body, and a hinged point between the rotary table and the first boom is located above the cab. Optionally, when the boom device is in the folded state, the second boom is located below the first boom, a head end of a third boom is located above the second boom, the fourth boom is located above the third boom, and the fifth boom, the sixth boom and the seventh boom are located above the fourth boom, wherein the first boom, the second boom and the head end of the third boom are folded in a first vertical plane, a tail end of the third boom, the fourth boom and the fifth boom are folded in a secon