Cantilever crane structure and aerial work platform
By designing a boom structure containing multiple chambers and flexible material connectors, the problem of setting up a drag chain protection hose in the prior art is solved, and the effect of the connectors being always connected and avoiding damage is achieved, simplifying the structure and improving durability.
Patent Information
- Application Number
- CN202421624199.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-10
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-10
AI Technical Summary
In the prior art, drag chains need to be installed to protect the hose, which has a complex structure. If the drag chain is directly omitted, it will cause the hose to easily collide with steel pipes and other structures, or cause the hose to be wrapped around the steel pipe, which will in turn lead to damage to the hose.
An arm frame structure is designed, including a basic arm and a telescopic arm, which has a receiving cavity inside the telescopic arm. The receiving cavity is divided into multiple chambers by a first guard plate and a second guard plate, and is connected in different chambers by connecting parts made of flexible materials, avoiding the use of the drag chain structure.
With this structure, the connection of the connector can be always maintained, avoiding collision or entanglement of the flexible material connector with other structures, thereby avoiding damage to the connector, simplifying the structure and improving durability.
Smart Images
Figure CN222809207U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aerial work platforms, in particular to a boom structure and an aerial work platform. Background Art
[0002] In aerial work machinery or aerial work platforms, a basic arm and a telescopic arm that can be extended and retracted relative to the basic arm are usually provided, and the electrical equipment or hydraulic equipment in the telescopic arm needs to be connected with a wire harness or pipeline. In traditional solutions, the wire harness or pipeline is usually arranged outside the basic arm for easy connection, but it is easily affected by external factors, such as falling objects damaging the wire harness or pipeline, or the wire harness or pipeline is aged rapidly under wind, sun and rain. In addition, the exposure of the wire harness or pipeline will also affect the aesthetics of the boom.
[0003] In this regard, the prior art provides a telescopic arm, which is provided with a steel pipe and a hose connected in sequence. The steel pipe is fixedly arranged inside the telescopic arm, and the hose is connected to the end of the steel pipe and is also arranged inside the telescopic arm. The hose is protected by a drag chain. When the telescopic arm is extended or retracted, the hose is guided and protected by the drag chain, which can avoid arranging the drag chain assembly outside the telescopic arm to increase the width of the telescopic arm, and can avoid the risk of collision and damage to the drag chain assembly. However, the problem is that a drag chain needs to be set to protect the hose, and the structure is complicated. If the drag chain is directly omitted, the hose will easily collide with structures such as the steel pipe, or the hose will be entangled with the steel pipe, thereby causing damage to the hose. Utility Model Content
[0004] According to one aspect of the utility model, the utility model provides an arm structure to solve the problem in the prior art that a drag chain needs to be set up to protect the hose, which has a complex structure. If the drag chain is directly omitted, the hose will easily collide with structures such as steel pipes, or cause the hose to be entangled with the steel pipe, thereby causing damage to the hose.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The arm structure comprises a basic arm for connecting to the fuselage and a telescopic arm capable of being telescoped relative to the basic arm, wherein the interior of the telescopic arm has a receiving cavity;
[0007] The arm structure further includes a first guard plate and a second guard plate, wherein the first guard plate and the second guard plate are both fixedly connected to the cavity wall of the accommodating cavity and sequentially divide the accommodating cavity into a first cavity, a second cavity and a third cavity;
[0008] The arm structure also includes a first connector, a second connector and a third connector connected in sequence, the first connector is used to connect a fuselage device set on the fuselage, the third connector is used to connect a target device set on the telescopic arm, the first connector is set in the first cavity, the second connector is set in the second cavity, and the third connector is set in the third cavity, the second connector is made of a flexible material, and when the telescopic arm is extended or retracted relative to the basic arm, the second connector can be straightened or bent.
[0009] As a preferred solution of the boom structure, the first connecting member is made of a flexible material; and / or the third connecting member is made of a flexible material.
[0010] As a preferred solution of the arm structure, the accommodating cavity has a first cavity wall and a second cavity wall arranged opposite to each other, the first cavity wall and the first guard plate form the first cavity, the first guard plate and the second guard plate form the second cavity, and the second guard plate and the second cavity wall form the third cavity.
[0011] As a preferred solution of the arm structure, the first connecting member is fixedly arranged on the cavity wall of the accommodating cavity by a tube clamp; and / or the third connecting member is fixedly arranged on the cavity wall of the accommodating cavity by a tube clamp.
[0012] As a preferred solution of the arm support structure, it also includes a driving member, and the driving member is used to drive the telescopic arm to reciprocate and extend relative to the basic arm.
[0013] As a preferred solution for the arm structure, the driving member is a telescopic cylinder, which has a fixed sleeve arranged on the basic arm and a telescopic rod arranged on the telescopic arm. The telescopic rod can reciprocate relative to the fixed sleeve to drive the telescopic arm to reciprocate and extend relative to the basic arm.
[0014] As a preferred solution of the boom structure, the telescopic cylinder is located in the second cavity, at least part of the second connecting member is arranged between the fixed sleeve and the first guard plate, or at least part of the second connecting member is arranged between the fixed sleeve and the second guard plate.
[0015] As a preferred solution of the arm structure, it also includes a support base fixedly connected to the first guard plate or fixedly connected to the second guard plate, and the fixed sleeve is connected to the support base.
[0016] As a preferred solution of the arm structure, the basic arm has a slide groove extending along its length direction, and the telescopic arm is slidably arranged in the slide groove.
[0017] According to another aspect of the utility model, an aerial work platform is provided, including a fuselage and the above-mentioned boom structure, the basic arm is connected to the fuselage, the fuselage is provided with fuselage equipment, the first connecting member, the second connecting member and the third connecting member are used to connect the fuselage equipment with a target equipment arranged on the telescopic arm.
[0018] The beneficial effects of the utility model are:
[0019] The utility model provides an arm structure, comprising a basic arm for connecting a fuselage and a telescopic arm capable of extending and retracting relative to the basic arm, wherein the interior of the telescopic arm is provided with a accommodating cavity; the arm structure also comprises a first guard plate and a second guard plate, wherein the first guard plate and the second guard plate are both fixedly connected to the cavity wall of the accommodating cavity, and sequentially divide the accommodating cavity into a first cavity, a second cavity, and a third cavity; the arm structure also comprises a first connecting member, a second connecting member, and a third connecting member connected in sequence, wherein the first connecting member is used to connect a fuselage device arranged on the fuselage, and the third connecting member is used to connect a target device arranged on the telescopic arm, thereby connecting the fuselage device with the target device through the first connecting member, the second connecting member, and the third connecting member. The first connecting member is arranged in the first cavity, the second connecting member is arranged in the second cavity, and the third connecting member is arranged in the third cavity. The second connecting member is made of flexible material. When the telescopic arm is extended or retracted relative to the basic arm, the second connecting member can be straightened or bent, so that when the telescopic arm is extended or retracted, the first connecting member, the second connecting member and the third connecting member can always remain connected. In addition, the first connecting member, the second connecting member and the third connecting member are respectively arranged in different cavities and separated by guard plates, so that the drag chain structure in the traditional solution can be omitted, the structure is simple, and the second connecting member made of flexible material can be avoided from colliding with the first connecting member or the third connecting member, while avoiding the second connecting member being entangled with the first connecting member or the third connecting member, thereby avoiding damage to the second connecting member.
[0020] The utility model also provides an aerial work platform, including a fuselage and the above-mentioned boom structure, wherein the basic arm is connected to the fuselage, the fuselage is provided with a fuselage device, and the first connector, the second connector and the third connector are used to connect the fuselage device with a target device provided on the telescopic arm. In the boom structure, the first connector is provided in the first cavity, the second connector is provided in the second cavity, and the third connector is provided in the third cavity. The second connector is made of a flexible material. When the telescopic arm is extended relative to the basic arm, the second connector can be straightened or bent, so that when the telescopic arm is extended, the first connector, the second connector and the third connector can always remain connected. In addition, the first connector, the second connector and the third connector are respectively provided in different cavities and separated by a guard plate, so that the drag chain structure in the traditional solution can be omitted, the structure is simple, and the second connector made of a flexible material can be prevented from colliding with the first connector or the third connector, and the second connector is prevented from being entangled with the first connector or the third connector, thereby preventing the second connector from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of the boom structure in the embodiment of the utility model;
[0022] Figure 2 yes Figure 1 The enlarged view of point A in the middle;
[0023] Figure 3 It is a schematic diagram of the structure of the driving member in the embodiment of the utility model.
[0024] In the figure:
[0025] 100, basic arm;
[0026] 200, telescopic arm; 201, first cavity; 202, second cavity; 203, third cavity;
[0027] 300, driving member; 310, fixing sleeve; 320, telescopic rod;
[0028] 400, support seat;
[0029] 1. First guard plate; 2. Second guard plate; 3. First connecting piece; 4. Second connecting piece; 5. Third connecting piece; 6. Pipe clamp. DETAILED DESCRIPTION
[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0034] In aerial work machinery or aerial work platforms, wiring harnesses or pipelines are usually arranged outside the basic arm, but they are easily affected by external factors. In this regard, the prior art provides a telescopic arm, which is provided with a steel pipe and a hose connected in sequence. The steel pipe is fixedly arranged inside the telescopic arm, and the hose is connected to the end of the steel pipe and is also arranged inside the telescopic arm. The hose is protected by a drag chain. When the telescopic arm is extended or retracted, the hose is guided and protected by the drag chain, which can avoid arranging the drag chain assembly outside the telescopic arm to increase the width of the telescopic arm, and can avoid the risk of collision and damage to the drag chain assembly. However, the problem is that a drag chain needs to be set to protect the hose, and the structure is complicated. If the drag chain is directly omitted, the hose will easily collide with structures such as steel pipes, or the hose will be entangled with the steel pipe, thereby causing damage to the hose.
[0035] In response to the above problems, this embodiment provides an arm structure to solve the problem that in the prior art, a drag chain needs to be set up to protect the hose, which has a complex structure. If the drag chain is directly omitted, the hose will easily collide with structures such as steel pipes, or cause the hose to be entangled with the steel pipe, thereby causing damage to the hose. This embodiment can be used in the field of aerial work platform technology.
[0036] Reference Figure 1-Figure 3 The arm structure includes a basic arm 100 for connecting to a fuselage and a telescopic arm 200 that can be telescoped relative to the basic arm 100, wherein the basic arm 100 is used to connect to the fuselage of the aerial work platform, and the telescopic arm 200 has a receiving cavity inside. The arm structure also includes a first guard plate 1 and a second guard plate 2, both of which are fixedly connected to the cavity wall of the receiving cavity, and the receiving cavity is sequentially divided into a first cavity 201, a second cavity 202, and a third cavity 203, wherein the first guard plate 1 and the second guard plate 2 can be connected to the cavity wall of the receiving cavity by bolts, or by welding.
[0037] Continue to refer to Figure 1-Figure 3 The arm structure also includes a first connector 3, a second connector 4 and a third connector 5 connected in sequence, the first connector 3 is used to connect the fuselage equipment set on the fuselage, and the third connector 5 is used to connect the target equipment set on the telescopic arm 200, so that the fuselage equipment is connected to the target equipment through the first connector 3, the second connector 4 and the third connector 5. Among them, the first connector 3, the second connector 4 and the third connector 5 are pipelines or wiring harnesses. The target equipment can be a driving device such as a hydraulic cylinder or a gas cylinder, or an electrical device such as a sensor. When the target equipment is a hydraulic cylinder or a gas cylinder, the fuselage equipment is a hydraulic oil source or a gas source, and the first connector 3, the second connector 4 and the third connector 5 are hydraulic pipelines for connecting the hydraulic cylinder with the hydraulic oil source. Alternatively, the first connector 3, the second connector 4 and the third connector 5 are gas pipelines for connecting the gas cylinder with the gas source. When the target device is an electrical device such as a sensor, the body device is a power supply or a controller, and the first connector 3, the second connector 4 and the third connector 5 are wiring harnesses for electrically connecting the sensor to the power supply or the controller.
[0038] Continue to refer to Figure 1-Figure 3The first connecting member 3 is arranged in the first cavity 201, the second connecting member 4 is arranged in the second cavity 202, and the third connecting member 5 is arranged in the third cavity 203. The second connecting member 4 is made of flexible material. When the telescopic arm 200 is extended or retracted relative to the basic arm 100, the second connecting member 4 can be straightened or bent, so that when the telescopic arm 200 is extended or retracted, the first connecting member 3, the second connecting member 4 and the third connecting member 5 can always remain connected. In addition, the first connecting member 3, the second connecting member 4 and the third connecting member 5 are respectively arranged in different cavities and separated by guard plates, so that the drag chain structure in the traditional solution can be omitted, the structure is simple, and the second connecting member 4 made of flexible material can be avoided from colliding with the first connecting member 3 or the third connecting member 5, and at the same time, the second connecting member 4 is avoided from being entangled with the first connecting member 3 or the third connecting member 5, thereby avoiding damage to the second connecting member 4.
[0039] Continue to refer to Figure 1-Figure 3 The first connector 3 is made of a flexible material to facilitate the installation of the first connector 3 and the connection between the first connector 3 and the fuselage device. At the same time, the first connector 3 can be protected by the cavity wall of the accommodating cavity and the first protective plate 1 to avoid damage; and / or, the third connector 5 is made of a flexible material to facilitate the installation of the third connector 5 and the connection between the third connector 5 and the target device. At the same time, the third connector 5 can be protected by the cavity wall of the accommodating cavity and the second protective plate 2 to avoid damage.
[0040] In some embodiments, the first connector 3, the second connector 4 and the third connector 5 are connected via a pipe joint; or, the first connector 3, the second connector 4 and the third connector 5 are connected via a wiring harness joint.
[0041] In other embodiments, the first connector 3 and the second connector 4 are both made of flexible materials, and the first connector 3 and the second connector 4 are integrally arranged; or, the second connector 4 and the third connector 5 are both made of flexible materials, and the second connector 4 and the third connector 5 are integrally arranged; or, the first connector 3, the second connector 4 and the third connector 5 are all made of flexible materials, and the first connector 3, the second connector 4 and the third connector 5 are integrally arranged, which constitute a whole, specifically a complete pipeline or wiring harness.
[0042] This embodiment exemplarily provides a solution in which the second connector 4 and the third connector 5 are both made of flexible materials and the second connector 4 and the third connector 5 are integrally arranged. In addition, the end of the second connector 4 away from the third connector 5 is connected to the first connector 3 through a pipe connector or a wiring harness connector.
[0043] Continue to refer to Figure 1-Figure 3The accommodating cavity has a first cavity wall and a second cavity wall arranged opposite to each other, the first cavity wall and the first guard plate 1 enclose a first cavity 201, the first guard plate 1 and the second guard plate 2 enclose a second cavity 202, and the second guard plate 2 and the second cavity wall enclose a third cavity 203. Optionally, the first guard plate 1 and the second guard plate 2 are arranged in parallel and at intervals, so that the first cavity 201, the second cavity 202 and the third cavity 203 are arranged in sequence along the normal direction of the first guard plate 1 or the second guard plate 2, so as to facilitate the passage of the wiring harness or pipeline.
[0044] Continue to refer to Figure 1-Figure 3 , the first connector 3 is fixedly arranged on the cavity wall of the accommodating cavity, specifically the first cavity wall, through the tube clamp 6, so that the first connector 3 is fixedly arranged on the first cavity wall; and / or, the third connector 5 is fixedly arranged on the cavity wall of the accommodating cavity, specifically the second cavity wall, through the tube clamp 6, so that the third connector 5 is fixedly arranged on the first cavity wall. This embodiment exemplarily provides a solution in which the first connector 3 is fixedly arranged on the cavity wall of the accommodating cavity through the tube clamp 6, and the third connector 5 is fixedly arranged on the cavity wall of the accommodating cavity through the tube clamp 6.
[0045] Continue to refer to Figure 1-Figure 3 The arm structure further includes a driving member 300 , which is used to drive the telescopic arm 200 to reciprocate and extend relative to the basic arm 100 , so that the telescopic arm 200 can be controlled by the driving member 300 .
[0046] Specifically, the driving member 300 is a telescopic oil cylinder, which has a fixed sleeve 310 disposed on the basic arm 100 and a telescopic rod 320 disposed on the telescopic arm 200, and the telescopic rod 320 can reciprocate relative to the fixed sleeve 310 to drive the telescopic arm 200 to reciprocate and telescope relative to the basic arm 100. Optionally, although the fixed sleeve 310 does not rotate relative to the basic arm 100 and the telescopic rod 320 does not rotate relative to the telescopic arm 200 under normal circumstances, the fixed sleeve 310 is still hinged to the basic arm 100 through a pin, and the telescopic rod 320 is hinged to the telescopic arm 200 through a pin, so as to allow the fixed sleeve 310 to rotate slightly relative to the basic arm 100, and at the same time allow the telescopic rod 320 to rotate slightly relative to the telescopic arm 200, so as to facilitate fine adjustment of the angles of the fixed sleeve 310 and the telescopic rod 320 when installing them.
[0047] Continue to refer to Figure 1-Figure 3In order to facilitate installation, the telescopic oil cylinder is located in the second cavity 202, but such a setting may cause the space of the second cavity 202 to be larger, and the second connecting member 4 may shake in the second cavity 202, or collide with the telescopic oil cylinder. In this regard, at least part of the second connecting member 4 is arranged between the fixed sleeve 310 and the first guard plate 1, or at least part of the second connecting member 4 is arranged between the fixed sleeve 310 and the second guard plate 2, thereby limiting the activity space of the second connecting member 4 and reducing the amplitude of its shaking. This embodiment exemplarily provides a solution in which part of the second connecting member 4 is arranged between the fixed sleeve 310 and the first guard plate 1.
[0048] Continue to refer to Figure 1-Figure 3 The arm structure also includes a support seat 400 fixedly connected to the first guard plate 1 or fixedly connected to the second guard plate 2, and the fixed sleeve 310 is connected to the support seat 400. Optionally, the first guard plate 1 is not directly connected to the cavity wall of the accommodating cavity, but is fixedly arranged on the fixed sleeve 310 through the support seat 400, and is fixedly arranged on the cavity wall of the accommodating cavity through the fixed sleeve 310. Optionally, the cross-section of the guard plate connected to the support seat 400 is L-shaped or U-shaped, which includes a bottom plate and an extension plate, the extension plate is perpendicular to the bottom plate and extends in a direction close to the fixed sleeve 310, and the support seat 400 can be connected to the bottom plate and the extension plate at the same time to increase the structural strength, and at the same time, it is convenient to set part of the second connecting member 4 between the fixed sleeve 310 and the corresponding guard plate.
[0049] Continue to refer to Figure 1-Figure 3 The basic arm 100 has a slide groove extending along its length direction, and the telescopic arm 200 is slidably arranged in the slide groove, so that the movement of the telescopic arm 200 when sliding relative to the basic arm 100 is more stable.
[0050] The present embodiment also provides an aerial work platform, including a fuselage and the above-mentioned boom structure, wherein a basic arm 100 is connected to the fuselage, and the fuselage is provided with fuselage equipment. The first connecting member 3, the second connecting member 4 and the third connecting member 5 are used to connect the fuselage equipment with a target equipment provided on the telescopic arm 200. In the arm structure, the first connecting member 3 is arranged in the first cavity 201, the second connecting member 4 is arranged in the second cavity 202, and the third connecting member 5 is arranged in the third cavity 203. The second connecting member 4 is made of flexible material. When the telescopic arm 200 is telescoped relative to the basic arm 100, the second connecting member 4 can be straightened or bent, so that when the telescopic arm 200 is telescoped, the first connecting member 3, the second connecting member 4 and the third connecting member 5 can always remain connected. In addition, the first connecting member 3, the second connecting member 4 and the third connecting member 5 are respectively arranged in different cavities and separated by guard plates, so that the drag chain structure in the traditional solution can be omitted, the structure is simple, and the second connecting member 4 made of flexible material can be avoided from colliding with the first connecting member 3 or the third connecting member 5, while avoiding the second connecting member 4 from being entangled with the first connecting member 3 or the third connecting member 5, thereby avoiding damage to the second connecting member 4.
[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A boom structure, comprising a basic arm (100) for connecting to a fuselage and a telescopic arm (200) capable of being telescopic relative to the basic arm (100), wherein the interior of the telescopic arm (200) has a receiving cavity; It is characterized in that The arm structure further comprises a first guard plate (1) and a second guard plate (2), wherein the first guard plate (1) and the second guard plate (2) are both fixedly connected to the cavity wall of the accommodating cavity and sequentially divide the accommodating cavity into a first cavity (201), a second cavity (202) and a third cavity (203); The arm structure further comprises a first connecting member (3), a second connecting member (4) and a third connecting member (5) which are connected in sequence, wherein the first connecting member (3) is used to connect a fuselage device arranged on the fuselage, and the third connecting member (5) is used to connect a target device arranged on the telescopic arm (200). The first connecting member (3) is arranged in the first cavity (201), the second connecting member (4) is arranged in the second cavity (202), and the third connecting member (5) is arranged in the third cavity (203). The second connecting member (4) is made of a flexible material, and when the telescopic arm (200) is extended or retracted relative to the basic arm (100), the second connecting member (4) can be straightened or bent.
2. The boom structure according to claim 1, characterized in that: The first connecting member (3) is made of a flexible material; and / or the third connecting member (5) is made of a flexible material.
3. The boom structure according to claim 1, characterized in that: The accommodating cavity comprises a first cavity wall and a second cavity wall which are arranged opposite to each other; the first cavity wall and the first protective plate (1) form the first cavity (201); the first protective plate (1) and the second protective plate (2) form the second cavity (202); and the second protective plate (2) and the second cavity wall form the third cavity (203).
4. The boom structure according to claim 1, characterized in that: The first connecting member (3) is fixedly arranged on the cavity wall of the accommodating cavity by means of a tube clamp (6); and / or the third connecting member (5) is fixedly arranged on the cavity wall of the accommodating cavity by means of a tube clamp (6).
5. The boom structure according to any one of claims 1 to 4, characterized in that: It also includes a driving member (300), wherein the driving member (300) is used to drive the telescopic arm (200) to reciprocate and extend relative to the basic arm (100).
6. The boom structure according to claim 5, characterized in that: The driving member (300) is a telescopic oil cylinder, which comprises a fixed sleeve (310) arranged on the basic arm (100) and a telescopic rod (320) arranged on the telescopic arm (200); the telescopic rod (320) can reciprocate relative to the fixed sleeve (310) to drive the telescopic arm (200) to reciprocate and telescope relative to the basic arm (100).
7. The boom structure according to claim 6, characterized in that: The telescopic cylinder is located in the second chamber (202), and at least a portion of the second connecting member (4) is arranged between the fixed sleeve (310) and the first guard plate (1), or at least a portion of the second connecting member (4) is arranged between the fixed sleeve (310) and the second guard plate (2).
8. The boom structure according to claim 6, characterized in that: It also includes a support seat (400) fixedly connected to the first guard plate (1) or fixedly connected to the second guard plate (2), and the fixing sleeve (310) is connected to the support seat (400).
9. The boom structure according to any one of claims 1 to 4, characterized in that: The basic arm (100) has a slide groove extending along its length direction, and the telescopic arm (200) is slidably arranged in the slide groove.
10. Aerial work platform, characterized in that: It comprises a fuselage and a boom structure as described in any one of claims 1 to 9, wherein the basic arm (100) is connected to the fuselage, the fuselage is provided with fuselage equipment, and the first connecting member (3), the second connecting member (4) and the third connecting member (5) are used to connect the fuselage equipment with a target equipment arranged on the telescopic arm (200).