阅读说明：本技术 可调式变幅铰点系统、举高消防车或高空作业车 (Adjustable amplitude-variable hinge point system, elevating fire truck or overhead working truck ) 是由 邹宁波 周敏 欧涛 黄开 于 2020-11-30 设计创作，主要内容包括：本发明涉及高空作业设备,具体公开了一种可调式变幅铰点系统,包括臂架、驱动机构、连杆机构和安装座,所述臂架通过所述连杆机构与所述安装座连接,其中所述驱动机构处于第一工作状态时能够驱动所述臂架相对于所述安装座转动设定角度,并通过所述连杆机构举升所述臂架以增大所述臂架与所述安装座之间的距离,所述驱动机构处于第二工作状态时能够驱动所述臂架相对于所述安装座回转所述设定角度,并通过动所述连杆机构降低所述臂架以减小所述臂架与所述安装座的距离。此外,本发明还涉及一种举高消防车或高空作业车。本发明的可调式变幅铰点系统能够兼顾举升高度和回收高度。(The invention relates to high-altitude operation equipment, and particularly discloses an adjustable variable-amplitude hinge point system which comprises an arm support, a driving mechanism, a link mechanism and a mounting seat, wherein the arm support is connected with the mounting seat through the link mechanism, the driving mechanism can drive the arm support to rotate for a set angle relative to the mounting seat when in a first working state, and lift the arm support through the link mechanism so as to increase the distance between the arm support and the mounting seat, the driving mechanism can drive the arm support to rotate for the set angle relative to the mounting seat when in a second working state, and the arm support is lowered by moving the link mechanism so as to reduce the distance between the arm support and the mounting seat. In addition, the invention also relates to a lifting fire truck or an overhead working truck. The adjustable variable amplitude hinge point system can give consideration to both lifting height and recovery height.)

1. An adjustable amplitude-variable hinge point system is characterized by comprising an arm support (3), a driving mechanism, a connecting rod mechanism and a mounting seat (4), the arm support (3) is connected with the mounting seat (4) through the connecting rod mechanism, wherein the driving mechanism can drive the arm support (3) to rotate for a set angle relative to the mounting seat (4) through the connecting rod mechanism when in a first working state, and the arm support (3) is lifted through the connecting rod mechanism to increase the distance between the arm support (3) and the mounting seat (4), when the driving mechanism is in a second working state, the arm support (3) can be driven to rotate relative to the mounting seat (4) by the connecting rod mechanism for a set angle, and the connecting rod mechanism is moved to lower the arm support (3) so as to reduce the distance between the arm support (3) and the mounting seat (4).

2. The adjustable amplitude-variable hinge point system as claimed in claim 1, wherein the link mechanism comprises a first link (1) and a second link (2), one end of the first link (1) and one end of the second link (2) are respectively hinged with a first link lower hinge point (11) and a second link lower hinge point (21) on the mounting seat (4), and the other end of the first link (1) and the other end of the second link (2) are respectively hinged with a first link upper hinge point (12) and a second link upper hinge point (22) on the arm support (3).

3. The adjustable amplitude-variable hinge point system as claimed in claim 2, wherein the first connecting rod lower hinge point (11), the second connecting rod lower hinge point (21), the second connecting rod upper hinge point (22) and the first connecting rod upper hinge point (12) are connected in sequence to form a quadrangle, when the driving mechanism is in the first working state, the first connecting rod (1) and the second connecting rod (2) rotate anticlockwise and the arm support (3) rotates clockwise, and when the driving mechanism is in the second working state, the first connecting rod (1) and the second connecting rod (2) rotate clockwise and the arm support (3) rotates anticlockwise.

4. The adjustable luffing hinge point system according to claim 3, wherein the length of the first connecting rod (1) is greater than the length of the second connecting rod (2).

5. The adjustable amplitude-variable hinge point system as claimed in claim 3, wherein the first link lower hinge point (11), the second link lower hinge point (21), the first link upper hinge point (12) and the second link upper hinge point (22) are positioned such that: when the driving mechanism is in the second working state, the first connecting rod (1), the second connecting rod (2) and the arm support (3) can be horizontally arranged on the mounting seat (4).

6. The adjustable amplitude-variable hinge point system as claimed in any one of claims 1 to 5, wherein the driving mechanism is a telescopic driving device, one end of the telescopic driving device is hinged with the arm support (3), and the other end of the telescopic driving device is hinged with the first connecting rod (1).

7. The adjustable amplitude-variable hinge point system as claimed in claim 6, wherein the telescopic driving device is an oil cylinder (5), a piston rod of the oil cylinder (5) is hinged with the arm support (3), and a cylinder body of the oil cylinder (5) is hinged with the first connecting rod (1).

8. The adjustable amplitude-variable hinge point system as claimed in claim 7, wherein the hinge point of the oil cylinder (5) and the first connecting rod (1) is located at the middle part of the first connecting rod (1).

9. The adjustable amplitude-variable hinge point system as claimed in any one of claims 1 to 5, wherein a reinforcing plate (6) is arranged on the arm support (3), and the arm support (3) is connected with the link mechanism through the reinforcing plate (6).

10. A lifting fire truck or overhead working truck, characterized by comprising an auxiliary frame and the variable amplitude hinge point system as claimed in any one of claims 1 to 9, wherein the arm support (3) is connected with the auxiliary frame through the variable amplitude hinge point system.

Technical Field

The invention relates to high-altitude operation equipment, in particular to an adjustable amplitude-variable hinge point system. In addition, the invention also relates to a lifting fire truck or an overhead working truck.

Background

With the continuous increase of the heights of houses and commercial buildings, the height of a fire scene is also continuously increased, new challenges are brought to fire scene relief, and a fire truck is used as a professional device for fire scene relief and is particularly important for the fire rescue work of high-rise buildings.

The height of the vehicle and the lifting height are two very important indexes in the performance of the fire truck, the passing performance and the maneuverability of the vehicle are determined by the height of the vehicle, and the lower height of the vehicle enables the fire truck to flexibly adapt to different road conditions and environments and quickly arrive at a fire scene; the lifting height determines the limit height of the fire truck for rescuing, and the higher lifting height enables the fire truck to be suitable for more high-rise buildings.

Referring to fig. 1 and 2, a fire fighting truck in the prior art includes a fixed turntable 1a, a lower portion of the fixed turntable 1a is connected to a frame through a pivoting support, an upper portion of the fixed turntable 1a is connected to an arm support 2a through an arm support hinge point 11a, is connected to an oil cylinder 3a through an oil cylinder hinge point 12a, and is hinged to the arm support 2 a. However, a certain height difference needs to be formed between the boom hinge point 11a of the fixed turntable 1a and the oil cylinder hinge point 12a, so that the oil cylinder 3a applies a pushing force or a pulling force to the boom 2a, thereby lifting or retracting the boom 2a, and therefore, the fixed turntable 1a enables the height of the fire truck to be reduced to a very limited extent.

In view of the above, a new adjustable luffing hinge point system is needed.

Disclosure of Invention

The technical problem to be solved by the first aspect of the invention is to provide an adjustable variable amplitude hinge point system, which can give consideration to both the lifting height and the recovery height of a boom.

The second aspect of the invention is to provide a high-lift fire truck or overhead working truck, which can take the lifting height and the recovery height of the boom into consideration.

In order to solve the technical problem, a first aspect of the present invention provides an adjustable variable-amplitude hinge point system, which includes an arm support, a driving mechanism, a link mechanism and a mounting seat, wherein the arm support is connected to the mounting seat through the link mechanism, the driving mechanism can drive the arm support to rotate by a set angle relative to the mounting seat when in a first working state, and lift the arm support by the link mechanism to increase a distance between the arm support and the mounting seat, the driving mechanism can drive the arm support to rotate by the set angle relative to the mounting seat when in a second working state, and the arm support is lowered by moving the link mechanism to decrease the distance between the arm support and the mounting seat.

As a specific structural form, the link mechanism comprises a first link and a second link, one end of the first link and one end of the second link are respectively hinged with a first link lower hinge point and a second link lower hinge point on the mounting seat, and the other end of the first link and the other end of the second link are respectively hinged with a first link upper hinge point and a second link upper hinge point on the arm support.

Preferably, the first link lower hinge point, the second link upper hinge point and the first link upper hinge point are sequentially connected to form a quadrangle, when the driving mechanism is in the first working state, the first link and the second link rotate counterclockwise and the arm support rotates clockwise, and when the driving mechanism is in the second working state, the first link and the second link rotate clockwise and the arm support rotates counterclockwise.

Further preferably, the length of the first link is greater than the length of the second link.

Preferably, the first link lower hinge point, the second link lower hinge point, the first link upper hinge point and the second link upper hinge point are positioned as follows: when the driving mechanism is in the second working state, the first connecting rod, the second connecting rod and the arm support can be horizontally arranged on the mounting seat.

Preferably, the driving mechanism is a telescopic driving device, one end of the telescopic driving device is hinged with the arm support, and the other end of the telescopic driving device is hinged with the first connecting rod.

As a specific structure form, the telescopic driving device is an oil cylinder, a piston rod of the oil cylinder is hinged with the arm support, and a cylinder body of the oil cylinder is hinged with the first connecting rod.

Preferably, the hinge point of the oil cylinder and the first connecting rod is located at the middle section of the first connecting rod.

Preferably, a reinforcing plate is arranged on the arm support, and the arm support is connected with the connecting rod mechanism through the reinforcing plate.

The invention provides a lifting fire truck or an overhead working truck in a second aspect, which comprises an auxiliary frame and an adjustable variable amplitude hinge point system in any one technical scheme of the first aspect, wherein the arm support is connected with the auxiliary frame through the adjustable variable amplitude hinge point system.

According to the adjustable amplitude-variable hinge point system in the basic technical scheme, when the driving mechanism is in the first working state, the arm support can be driven to rotate for a set angle through the connecting rod mechanism or directly, so that the arm support is lifted by a certain height, and the driving mechanism can drive the connecting rod mechanism to further lift the arm support, so that the distance between the arm support and the mounting seat is increased, and the lifting height of the arm support is further increased; when the driving mechanism is in the second working state, the arm support can be recovered by driving the arm support to rotate by a set angle through the link mechanism or directly, and the driving mechanism can drive the link mechanism to act, so that the distance between the arm support and the mounting seat is further reduced, and the recovery height of the arm support is further reduced. Namely, the adjustable variable amplitude hinge point system skillfully increases or decreases the distance between the arm support and the mounting seat through the link mechanism, so that the arm support can reach higher lifting height and lower recovery height.

Further advantages of the present invention, as well as the technical effects of preferred embodiments, are further described in the following detailed description.

Drawings

FIG. 1 is a schematic diagram of a prior art fire truck;

fig. 2 is a schematic structural view of a fixed turntable in the prior art;

FIG. 3 is a schematic structural view of an embodiment of the adjustable luffing hinge point system of the present invention, wherein the drive mechanism is in a first operating state;

FIG. 4 is a schematic structural view of an embodiment of the adjustable luffing hinge point system of the present invention, wherein the drive mechanism is in a second operating state;

FIG. 5 is a schematic diagram of the operation of one embodiment of the adjustable luffing hinge point system of the present invention;

fig. 6 is a schematic structural view of an embodiment of the elevated fire truck or aerial cage of the present invention.

Reference numerals

1 first link 11 first link lower hinge point

12 first connecting rod upper hinge point

2 second link 21 second link lower hinge point

22 second connecting rod upper hinge point

3 arm support 4 mounting seat

5 oil cylinder 6 reinforcing plate

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "disposed" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; the two elements may be connected directly or indirectly through intervening media, or may be connected through one another or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 2 to 5, the adjustable variable amplitude hinge point system according to the basic technical scheme of the present invention includes an arm support 3, a driving mechanism, a link mechanism and a mounting base 4, wherein the arm support 3 is connected with the mounting base 4 through the link mechanism. When the driving mechanism is in a first working state, the arm support 3 can be directly driven or driven by the connecting rod mechanism to rotate for a set angle relative to the mounting seat 4, so that the arm support 3 is lifted for a certain height, and the driving mechanism can drive the connecting rod mechanism to further lift the arm support 3, so that the distance between the arm support 3 and the mounting seat 4 is increased, and the lifting height of the arm support is further increased; when the driving mechanism is in the second working state, the arm support 3 can be directly driven or driven by the link mechanism to rotate for a set angle relative to the mounting seat 4, so that the arm support 3 is recovered, and the driving mechanism can further reduce the distance between the arm support 3 and the mounting seat 4 by moving the link mechanism, so that the recovery height of the arm support 3 is reduced. The link mechanism is mainly used for changing the distance between the arm support 3 and the mounting seat 4, the driving mechanism is mainly used for providing power for the link mechanism, and the driving mechanism can directly drive the arm support 3 to act and can also drive the arm support 3 to act through the link mechanism.

According to the adjustable variable amplitude hinge point system in the basic technical scheme, the distance between the arm support 3 and the mounting seat 4 is skillfully increased or reduced through the connecting rod mechanism, so that the arm support 3 can reach higher lifting height and lower recovery height. When the adjustable amplitude-variable hinge point system is applied to a lifting fire truck or an overhead working truck, the trafficability, the maneuverability and the flexibility of the working truck are higher, the application range is wider, on one hand, the recovery height of the arm support 3 is lower, the overall height of the working truck is reduced, and the lifting fire truck or the overhead working truck can flexibly adapt to different road conditions and environments and can quickly reach an accident site; on the other hand, the lifting height of the arm support 3 is high, the lifting height determines the limit height of the working vehicle for rescue, and the working vehicle can be suitable for more high-rise buildings due to the high lifting height along with the continuous increase of the heights of the modern houses and commercial buildings.

As a specific structure form, the link mechanism comprises a first link 1 and a second link 2, one end of the first link 1 and one end of the second link 2 are respectively hinged with a first link lower hinge point 11 and a second link lower hinge point 12 on the mounting seat 4, and the other end of the first link 1 and the other end of the second link 2 are respectively hinged with a first link upper hinge point 12 and a second link upper hinge point 22 on the arm support 3. The link mechanism with the structure has simple structure and convenient installation. Alternatively, the link mechanism may be formed in other structural forms, and the link mechanism may change the distance between the arm support 3 and the mounting base 4 by rotating or extending and contracting.

Alternatively, the first link 1 and the second link 2 may be in the form of mutually intersecting scissors arms that are folded or unfolded to increase or decrease the distance between the arm support 3 and the mounting base 4; or, referring to fig. 3 and 4, the first connecting rod 1 and the second connecting rod 2 may also form a quadrilateral structure with the arm support 3 and the mounting base 4, the first connecting rod lower hinge point 11, the second connecting rod lower hinge point 21, the second connecting rod upper hinge point 22 and the first connecting rod upper hinge point 12 are sequentially connected to form a quadrilateral, the length of the first connecting rod 1 is greater than that of the second connecting rod 2, when the driving mechanism is in the first working state, the first connecting rod 1 and the second connecting rod 2 rotate counterclockwise and the arm support 3 rotates clockwise, the arm support 3 is lifted, when the driving mechanism is in the second working state, the first connecting rod 1 and the second connecting rod 2 rotate clockwise and the arm support 3 rotates counterclockwise, and the arm support 3 is retracted; or, the link mechanism may also be in the form of a multi-layer fork frame, which is disposed between the arm support 3 and the mounting seat 4, and plays a role in further lifting or lowering the height of the arm support 3.

Preferably, the first link lower hinge point 11, the second link lower hinge point 21, the first link upper hinge point 12 and the second link upper hinge point 22 are positioned such that: when the driving mechanism is in the second working state, the first connecting rod 1, the second connecting rod 2 and the arm support 3 can be horizontally placed on the mounting seat 4. For example, the length of the connecting line between the first link lower hinge point 11 and the first link upper hinge point 12 plus the length of the connecting line between the first link upper hinge point 12 and the second link upper hinge point 22 is made greater than the length of the connecting line between the first link lower hinge point 11 and the second link lower hinge point 21 plus the length of the connecting line between the second link upper hinge point 22 and the second link lower hinge point 21. Therefore, after the arm support 3 is recovered, the height between the highest point of the arm support 3 and the mounting seat 4 is reduced as much as possible, and the recovery height of the arm support 3 is reduced more effectively. That is to say, the distance between two adjacent hinge points needs to be designed reasonably, and when the connecting rod mechanism is prevented from rotating to a dead point, the second connecting rod 2, the first connecting rod 1 and the mounting seat 4 still have a large included angle therebetween, so that the recovery height of the adjustable variable amplitude hinge point system cannot be reduced well.

Preferably, the driving mechanism is a telescopic driving device, one end of the telescopic driving device is hinged with the arm support 3, the other end of the telescopic driving device is hinged with the first connecting rod 1, and the arm support 3 and a connecting rod in the connecting rod mechanism are pushed or pulled to rotate through telescopic reciprocating linear motion. Or, the driving mechanism is a rotation driving device, which can be disposed at each hinge point, and drives the arm support 3 and the connecting rod in the connecting rod mechanism to rotate through the torque.

Specifically, the telescopic driving device is an oil cylinder 5, a piston rod of the oil cylinder 5 is hinged to the arm support 3, a cylinder body of the oil cylinder 5 is hinged to the first connecting rod 1, when the piston rod of the oil cylinder 5 extends out, namely when the driving device is in a first working state, the arm support 3 is lifted, and when the piston rod of the oil cylinder 5 retracts, namely when the driving device is in a second working state, the arm support 3 is retracted. Alternatively, the telescopic driving device may be an electric push rod, a linear motor, or the like.

In order to optimize the mechanical structure of the adjustable variable amplitude hinge point system, the hinge point of the oil cylinder 5 and the first connecting rod 1 is positioned at the middle section of the first connecting rod 1, and the arm support 3, the oil cylinder 5 and the first connecting rod 1 form a stable triangular structure.

Preferably, a reinforcing plate 6 is arranged on the arm support 3, and the arm support 3 is connected with the link mechanism through the reinforcing plate 6. The reinforcing plate 6 is wrapped on the arm support 3, hinge holes are formed in the reinforcing plate, when the hinge holes fail, the reinforcing plate 6 is convenient to maintain and replace, meanwhile, the hinge holes are machined in the reinforcing plate 6, and the structure of the arm support 3 is also simplified.

In order to help those skilled in the art to more deeply understand the technical idea of the present invention, the following is an adjustable luffing hinge point system of a preferred embodiment of the present invention.

The working bucket mechanism comprises an arm support 3, a driving mechanism, a connecting rod mechanism and a mounting seat 4, wherein a reinforcing plate 6 is arranged on the arm support 3, and the arm support 3 is connected with the connecting rod mechanism through the reinforcing plate 6; the connecting rod mechanism comprises a first connecting rod 1 and a second connecting rod 2, the length of the first connecting rod 1 is larger than that of the second connecting rod 2, one ends of the first connecting rod 1 and the second connecting rod 2 are respectively hinged with a first connecting rod lower hinge point 11 and a second connecting rod lower hinge point 12 on the mounting seat 4, the other ends of the first connecting rod 1 and the second connecting rod 2 are respectively hinged with a first connecting rod upper hinge point 12 and a second connecting rod upper hinge point 22 on the reinforcing plate 6, and the first connecting rod lower hinge point 11, the second connecting rod lower hinge point 21, the second connecting rod upper hinge point 22 and the first connecting rod upper hinge point 12 are sequentially connected to form a quadrangle; the driving mechanism is an oil cylinder 5, a piston rod of the oil cylinder 5 is hinged with the arm support 3, a cylinder body of the oil cylinder 5 is hinged with the first connecting rod 1, and a hinged point of the oil cylinder 5 and the first connecting rod 1 is positioned at the middle section of the first connecting rod 1.

The working process of the variable amplitude hinge point system of a preferred embodiment of the present invention is as follows.

When a piston rod of the oil cylinder 5 extends out, the arm support 3 rotates clockwise, the arm support 3 lifts, and meanwhile, the first connecting rod 1 and the second connecting rod 2 rotate anticlockwise, so that the distance between the arm support 3 and the mounting base 4 is increased, and the lifting height of the arm support 3 is further improved; when a piston rod of the oil cylinder 5 retracts, the arm support 3 rotates anticlockwise, the arm support 3 is recovered, and meanwhile, the first connecting rod 1 and the second connecting rod 2 rotate clockwise, so that the distance between the arm support 3 and the mounting base 4 is reduced, and the recovery height of the arm support 3 is further reduced; after the arm support 3 is recovered in place, the first connecting rod 1, the second connecting rod 2 and the arm support 3 can be horizontally placed on the mounting seat.

The invention also provides a high-lift fire truck or high-altitude operation truck, which comprises an auxiliary frame and an adjustable amplitude-variable hinge point system in any one of the technical schemes, and the arm support 3 is connected with the auxiliary frame through the adjustable amplitude-variable hinge point system, referring to fig. 6. The elevating fire truck or overhead working truck has higher trafficability, maneuverability and flexibility and wider application range, on one hand, the recovery height of the arm support 3 is lower, so that the overall height of the working truck is reduced, and the elevating fire truck or overhead working truck can flexibly adapt to different road conditions and environments and quickly reach accident sites; on the other hand, the lifting height of the arm support 3 is high, the lifting height determines the limit height of the working vehicle for rescue, and the working vehicle can be suitable for more high-rise buildings due to the high lifting height along with the continuous increase of the heights of the modern houses and commercial buildings.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.