Double-oil-cylinder telescopic boom for overhead working truck

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly relates to a double-oil-cylinder telescopic boom for an overhead working truck, which comprises a base, mounting mechanisms arranged on the base, a large arm arranged between the mounting mechanisms, a small arm arranged on the large arm, a connecting component arranged at the outer end of the small arm, and a working platform arranged on the connecting component. A first oil cylinder is arranged outside the large arm, side face installation pieces are arranged on the two sides of the large arm, a first hydraulic rod is arranged between the side face installation pieces, supporting connecting pieces are arranged at the bottom of the large arm, a second oil cylinder is arranged between the supporting connecting pieces, and the installation mechanism comprises a notch and a rotating rod. Through the installation mechanism, the rotating rod, the side face installation piece and the first hydraulic rod, supporting can be carried out along with the two sides of the large arm, the stability of the telescopic arm frame can be guaranteed, the environmental adaptability of the telescopic arm frame is improved, through the large arm, the first oil cylinder and the second hydraulic rod, the small arm is prevented from retracting after the first oil cylinder breaks down, and the safety guarantee of the small arm is further improved; and the safe use effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a double-cylinder telescopic boom for aerial work vehicles. Background Technology

[0002] Construction machinery refers to mechanical equipment used for various engineering construction, building, road construction, mining, logistics and handling tasks. Among them, aerial work platforms (also known as aerial work platform trucks or aerial lifting platforms) are a type of mechanical equipment specifically used for high-altitude operations. They include two types: articulated boom and telescopic boom. Telescopic boom aerial work platforms generally include a chassis, boom and working platform. A turntable is set on the chassis, the lower end of the boom is connected to the turntable, and the upper end of the boom is set with the working platform. After the boom is extended and raised, the working platform is moved to the high-altitude work area. After the boom is retracted and lowered, the working platform is returned to its original position.

[0003] The existing technology has the following shortcomings: Application number 202321651739.X proposes a dual-cylinder telescopic boom for aerial work platforms and an aerial work platform itself. This utility model, a dual-cylinder telescopic boom for aerial work platforms, applies this technology to aerial work platforms. The first and second-level cylinders can independently control the synchronous extension and retraction of the first and subsequent boom stages. For booms with a large number of stages, the extension and retraction efficiency is high. The first extension chain and first retraction chain are arranged on the first few boom stages with larger cross-sectional areas. For subsequent boom stages with smaller cross-sectional areas, only the second chain used for extension transmission between adjacent boom stages is retained, while the chain used for retraction transmission between adjacent boom stages is omitted. This simplifies the chain arrangement between adjacent boom stages, reduces the boom's cross-sectional area, achieves a compact boom design, facilitates boom assembly, and improves assembly efficiency.

[0004] When the above-mentioned equipment is in use, if the working platform is raised and there is a strong wind in the environment, it will affect the stability of the telescopic boom. The environmental adaptability of the telescopic boom can be further improved. At the same time, after the forearm of the telescopic boom is extended, the support structure is only supported by a set of hydraulic cylinders. If the hydraulic cylinders are damaged, the forearm can easily retract, which poses a safety hazard. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual-cylinder telescopic boom for aerial work platforms, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-cylinder telescopic boom for aerial work platforms, comprising a base, an installation mechanism on the base, a main boom between the installation mechanisms, a forearm on the main boom, a connecting component at the outer end of the forearm, a working platform on the connecting component, a first hydraulic cylinder outside the main boom, side mounting members on both sides of the main boom, a first hydraulic rod between the side mounting members, a support connector at the bottom of the main boom, a second hydraulic cylinder between the support connectors, and a second hydraulic rod inside the main boom;

[0007] The installation mechanism includes a notch and a rotating rod. The notch is provided on the installation mechanism, and the rotating rod is disposed within the notch.

[0008] As a preferred technical solution of this utility model: the mounting mechanism consists of two sets and is fixedly installed on the base, and the large arm is rotatably installed between the two sets of mounting mechanisms.

[0009] As a preferred technical solution of this utility model: the forearm is inserted into the upper arm, the connecting component is fixedly installed on the outer end of the forearm, and the working platform is fixedly installed on the connecting component.

[0010] As a preferred technical solution of this utility model: the first hydraulic cylinder is fixedly installed on the outside of the upper arm, and the output end of the first hydraulic cylinder is fixedly connected to the outside of the forearm.

[0011] As a preferred technical solution of this utility model: there are four sets of side mounting parts distributed on both sides of the main arm, and the rotating rod is rotatably installed in the notch.

[0012] As a preferred technical solution of this utility model: the bottom of the first hydraulic rod is fixedly installed on the rotating rod, the output end of the first hydraulic rod is connected between two sets of side mounting parts, and there are two sets of the first hydraulic rod distributed on both sides of the boom.

[0013] As a preferred technical solution of this utility model: there are four sets of support connectors, which are respectively installed on the bottom of the boom and the base. The bottom of the second hydraulic cylinder is rotatably installed between the two sets of support connectors on the base. The output end of the second hydraulic cylinder is rotatably installed between the two sets of support connectors at the bottom of the boom. The second hydraulic rod is fixedly installed inside the boom, and the output end of the second hydraulic rod is pressed against the bottom end of the forearm.

[0014] Compared with the prior art, this utility model provides a dual-cylinder telescopic boom for aerial work platforms, which has the following advantages:

[0015] 1. This aerial work platform with a dual-cylinder telescopic boom, by setting up an installation mechanism, a rotating rod, a side mounting component, and a first hydraulic rod, allows the second hydraulic cylinder to lift the boom. After the second hydraulic cylinder lifts the boom, the two sets of first hydraulic rods follow the boom and can support both sides of the boom, preventing the boom from swaying. In windy weather, this ensures the stability of the telescopic boom and improves its environmental adaptability.

[0016] 2. This type of aerial work platform with a dual-cylinder telescopic boom, by setting up a boom, a first hydraulic cylinder, and a second hydraulic rod, allows the first hydraulic cylinder to extend the forearm, while the second hydraulic rod can support the forearm inside the boom, preventing the forearm from retracting in case of a failure of the first hydraulic cylinder, further improving the safety of the forearm and ensuring safe use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the second hydraulic cylinder of this utility model;

[0019] Figure 3 This is a schematic diagram of the installation mechanism structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the installation of the second hydraulic rod of this utility model.

[0021] In the diagram: 1. Base; 2. Mounting mechanism; 201. Notch; 202. Rotating rod; 3. Boom; 4. Arm; 5. Connecting assembly; 6. Working platform; 7. First hydraulic cylinder; 8. Side mounting component; 9. First hydraulic rod; 10. Support connector; 11. Second hydraulic cylinder; 12. Second hydraulic rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4In this embodiment: a double-cylinder telescopic boom for an aerial work platform includes a base 1, an installation mechanism 2 on the base 1, a boom 3 between the installation mechanisms 2, a forearm 4 on the boom 3, a connecting component 5 at the outer end of the forearm 4, a working platform 6 on the connecting component 5, a first hydraulic cylinder 7 on the outside of the boom 3, side mounting parts 8 on both sides of the boom 3, a first hydraulic rod 9 between the side mounting parts 8, a support connector 10 at the bottom of the boom 3, a second hydraulic cylinder 11 between the support connectors 10, and a second hydraulic rod 12 inside the boom 3.

[0024] The base 1 facilitates the installation of the telescopic boom on the aerial work platform.

[0025] The mounting mechanism 2 includes a notch 201 and a rotating rod 202. The mounting mechanism 2 has a notch 201 and a rotating rod 202 is installed inside the notch 201.

[0026] The notch 201 provides space for the installation of the rotating rod 202.

[0027] In this embodiment, there are two sets of installation mechanisms 2, which are fixedly installed on the base 1, and the large arm 3 is rotatably installed between the two sets of installation mechanisms 2.

[0028] Specifically, the installation mechanism 2 facilitates the installation of the boom 3.

[0029] In this embodiment, the forearm 4 is inserted into the upper arm 3, the connecting component 5 is fixedly installed on the outer end of the forearm 4, and the working platform 6 is fixedly installed on the connecting component 5.

[0030] Specifically, the connecting component 5 makes the work platform 6 more stable at the outer end of the forearm 4, and the work platform 6 provides workers with standing conditions for working at height.

[0031] In this embodiment, the first hydraulic cylinder 7 is fixedly installed on the outside of the upper arm 3, and the output end of the first hydraulic cylinder 7 is fixedly connected to the outside of the lower arm 4.

[0032] Specifically, the first hydraulic cylinder 7 facilitates the extension of the forearm 4 out of the upper arm 3.

[0033] In this embodiment, there are four sets of side mounting parts 8, which are distributed on both sides of the boom 3, and the rotating rod 202 is rotatably installed in the notch 201;

[0034] Specifically, the rotating rod 202 ensures the tilting of the first hydraulic rod 9, allowing the first hydraulic rod 9 to flexibly follow the tilting of the boom 3.

[0035] In this embodiment, the bottom of the first hydraulic rod 9 is fixedly installed on the rotating rod 202, and the output end of the first hydraulic rod 9 is connected between two sets of side mounting parts 8. There are two sets of the first hydraulic rod 9, which are distributed on both sides of the boom 3.

[0036] Specifically, the first hydraulic rod 9 can support both sides of the boom 3 to prevent the boom 3 from swaying.

[0037] In this embodiment, there are four sets of support connectors 10, which are respectively installed on the bottom of the boom 3 and the base 1. The bottom of the second cylinder 11 is rotatably installed on the base 1 between the two sets of support connectors 10. The output end of the second cylinder 11 is rotatably installed between the two sets of support connectors 10 at the bottom of the boom 3. The second hydraulic rod 12 is fixedly installed inside the boom 3. The output end of the second hydraulic rod 12 is pushed against the bottom end of the forearm 4.

[0038] Specifically, the support connector 10 ensures that the second hydraulic cylinder 11 can flexibly control the lifting and lowering of the boom 3 after installation.

[0039] The working principle and usage process of this utility model are as follows: In actual use, the telescopic boom is installed on the corresponding work vehicle. The second hydraulic cylinder 11 and the first hydraulic rod 9 are controlled to raise the boom 3. During the process, the second hydraulic cylinder 11 can lift the boom 3, and the two sets of first hydraulic rods 9 can be raised along with the boom 3, always maintaining the connection between the first hydraulic rods 9 and the boom 3. The two sets of first hydraulic rods 9 can support both sides of the boom 3 to prevent the boom 3 from swaying. In windy weather, it can ensure the stability of the telescopic boom and improve the environmental adaptability of the telescopic boom. After the boom 3 is raised, the forearm 4 can be extended by the first hydraulic cylinder 7, thereby sending the work platform 6 out for high-altitude operations. The second hydraulic rod 12 can support the forearm 4 inside the boom 3 to prevent the forearm 4 from retracting in case of failure of the first hydraulic cylinder 7, further improving the safety of the forearm 4 and ensuring safe use.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-cylinder telescopic boom for an aerial work platform, comprising a base (1), wherein a mounting mechanism (2) is provided on the base (1), characterized in that: A large arm (3) is provided between the installation mechanisms (2), a small arm (4) is provided on the large arm (3), a connecting component (5) is provided at the outer end of the small arm (4), a working platform (6) is provided on the connecting component (5), a first oil cylinder (7) is provided on the outside of the large arm (3), side mounting parts (8) are provided on both sides of the large arm (3), a first hydraulic rod (9) is provided between the side mounting parts (8), a support connector (10) is provided at the bottom of the large arm (3), a second oil cylinder (11) is provided between the support connectors (10), and a second hydraulic rod (12) is provided inside the large arm (3). The installation mechanism (2) includes a notch (201) and a rotating rod (202). The installation mechanism (2) has a notch (201) and a rotating rod (202) is provided inside the notch (201).

2. The aerial work platform double-cylinder telescopic boom according to claim 1, characterized in that: The mounting mechanism (2) consists of two sets and is fixedly mounted on the base (1). The large arm (3) is rotatably mounted between the two sets of mounting mechanisms (2).

3. The aerial work platform double-cylinder telescopic boom according to claim 1, characterized in that: The forearm (4) is inserted into the upper arm (3), the connecting component (5) is fixedly installed on the outer end of the forearm (4), and the working platform (6) is fixedly installed on the connecting component (5).

4. The aerial work platform double-cylinder telescopic boom according to claim 1, characterized in that: The first hydraulic cylinder (7) is fixedly installed on the outside of the boom (3), and the output end of the first hydraulic cylinder (7) is fixedly connected to the outside of the forearm (4).

5. The aerial work platform double-cylinder telescopic boom according to claim 1, characterized in that: There are four sets of side mounting parts (8) distributed on both sides of the boom (3), and the rotating rod (202) is rotatably installed in the notch (201).

6. The aerial work platform double-cylinder telescopic boom according to claim 1, characterized in that: The bottom of the first hydraulic rod (9) is fixedly mounted on the rotating rod (202). The output end of the first hydraulic rod (9) is connected between two sets of side mounting parts (8). There are two sets of the first hydraulic rod (9) and they are distributed on both sides of the boom (3).

7. A double-cylinder telescopic boom for an aerial work platform according to claim 1, characterized in that: There are four sets of support connectors (10), which are respectively installed on the bottom of the boom (3) and the base (1). The bottom of the second cylinder (11) is rotatably installed between the two sets of support connectors (10) on the base (1). The output end of the second cylinder (11) is rotatably installed between the two sets of support connectors (10) at the bottom of the boom (3). The second hydraulic rod (12) is fixedly installed inside the boom (3). The output end of the second hydraulic rod (12) is pressed against the bottom end of the forearm (4).

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