Insulating forearm mechanism suitable for aerial work platform with voltage smaller than or equal to 66KV

Abstract

The utility model provides an insulating forearm mechanism suitable for an aerial work platform with the voltage smaller than or equal to 66KV. The small arm mechanism comprises an insulating main arm, two insulating pull rods parallel to the insulating main arm and a working bucket installed at the free end of the insulating main arm, one end of the insulating main arm is rotationally connected with the arm support mechanism through a first connecting frame, the other end of the insulating main arm is rotationally connected with a connecting support, and the two insulating pull rods are arranged above the insulating main arm in parallel; one end is rotatably connected with the arm support mechanism through a first pull rod rotating shaft, the other end is rotatably connected with the connecting support through a second pull rod rotating shaft, a small arm variable-amplitude cylinder is arranged between the first pull rod rotating shaft and the first connecting support, and the working bucket is rotatably installed at the free end of the insulating main arm through a leveling support. According to the utility model, any insulation distance of the working bucket can be ensured to be more than 300mm, so that the working bucket achieves an insulation effect; the utility model can flexibly act when working in a specific or narrow space, and is simpler in structure and easy to weld.

Description

Technical Field

[0001] This utility model belongs to the field of high-altitude work equipment, specifically an insulated forearm mechanism suitable for high-altitude work platforms with voltage less than or equal to 66KV. This insulated mechanism can realize high-altitude work with voltage less than or equal to 66KV. Background Technology

[0002] With the continuous changes and development of life and production, aerial work platforms have received increasing attention and application. There are countless cases of their use in fields such as machinery manufacturing, bridge construction, equipment maintenance, and power installation. Among them, aerial work platforms are widely used due to their advantages such as convenient transportation, high operating efficiency, and low failure rate.

[0003] Existing aerial work platforms often have live wires or electrical equipment in many situations such as routine maintenance and cleaning. If the machine is shut down for maintenance, it will cause economic losses, and if it is operated while the power is on, it will pose a great challenge to the personal safety of the workers.

[0004] In addition, to ensure stability, the boom mechanism of existing aerial work platforms mostly adopts a four-bar parallel structure, which is relatively complex and has high processing and welding costs; and its adjustment is limited when operating in specific or narrow spaces. Summary of the Invention

[0005] In order to solve the technical problems existing in the background art, this utility model provides an insulated forearm mechanism suitable for high-altitude work platforms with voltage less than or equal to 46KV. This forearm mechanism can solve the problem of live work, and has good overall structural stability, simple processing and convenient welding.

[0006] To achieve the aforementioned technical objectives, this utility model provides an insulated boom mechanism suitable for aerial work platforms with voltages less than or equal to 66KV. This mechanism is installed at the front end of the boom mechanism of the lower boom of an aerial work vehicle. The boom mechanism includes an insulated main boom, two insulated tie rods parallel to the main boom, and a work bucket installed at the free end of the main boom. The insulated main boom is positioned below the center of the boom mechanism. One end of the main boom is rotatably connected to the boom mechanism via a first connecting frame, and the other end is rotatably connected to a connecting bracket. The two insulated tie rods are arranged parallel above the main boom. Furthermore, one end of each of the two insulating tie rods is rotatably connected to the boom mechanism via a first tie rod pivot, and the other end is rotatably connected to the connecting bracket via a second tie rod pivot. A boom luffing cylinder is provided between the first tie rod pivot and the first connecting bracket. The boom luffing cylinder is located in the middle above the front end of the boom mechanism. The cylinder body of the boom luffing cylinder is fixed on the first tie rod pivot, and the piston end of the boom luffing cylinder is fixed on the first connecting bracket. The working bucket is rotatably mounted on the free end of the insulating main boom via a leveling bracket. The leveling bracket is rotatably connected to the insulating main boom, and the working bucket is vertically fixed on the leveling bracket.

[0007] The preferred technical solution of this utility model is as follows: a second connecting frame is fixedly installed at the free end of the insulating main arm; the lower end of the leveling bracket and the connecting bracket are rotatably connected to the second connecting frame through a leveling cylinder fixing shaft; a leveling cylinder is provided between the leveling cylinder fixing shaft and the leveling bracket; the cylinder body of the leveling cylinder is rotatably connected to the upper part of the leveling bracket; the piston end of the leveling cylinder is fixed to the leveling cylinder fixing shaft; and the leveling cylinder fixing shaft is rotatably connected to the second connecting frame.

[0008] The preferred technical solution of this utility model is as follows: the first connecting frame is connected to the lower front end of the boom mechanism. The first connecting frame is rotatably connected to the boom mechanism through the connecting frame pivot. The area of ​​the boom mechanism between the first tie rod pivot and the connecting frame pivot is parallel to the connecting bracket. The boom mechanism, the insulated main boom, the two insulated tie rods and the connecting bracket form a parallelogram mechanism.

[0009] The preferred technical solution of this utility model is as follows: the leveling bracket includes an inclined area and a vertical area, the lower end of the inclined area is rotatably connected to the second connecting frame, the working bucket is fixedly installed at the upper end of the vertical area of ​​the leveling bracket, and the leveling cylinder is rotatably connected to the upper part of the vertical area of ​​the leveling bracket through a rotating shaft.

[0010] The beneficial effects of this utility model are:

[0011] (1) The parallel main boom and insulating tie rod of this utility model are both imported high-strength insulating materials. The boom luffing cylinder of this utility model pushes the insulating main boom, and the insulating tie rod is linked to keep the connecting bracket at a parallel angle. Its unique leveling method and layout (the arbitrary insulation distance of the working bucket is more than 300mm) enable the working bucket to achieve insulation effect; it can meet the safety of workers in the case of live operation.

[0012] (2) When the insulated main boom of this utility model is in the horizontal direction, the insulated arm mechanism can continue to be in the upward direction, so as to provide better flexible movement in specific or narrow spaces; when the boom is raised to the highest point, the parallel insulated arm mechanism can increase the working space and range, thereby improving the practicality and competitive advantage of the aerial work platform.

[0013] (3) The entire forearm mechanism of this utility model adopts a three-insulating rod parallel structure, which greatly increases the stability of the structure. It is more robust than similar four-bar parallel structures. Moreover, it simplifies the structure compared to the common four-bar parallel method on the market. Its structure is simpler and easier to weld. It reduces the disadvantage of needing large machine tools for processing, and has significant improvement and competitive space in production, processing and sales. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the horizontal operation of this utility model;

[0016] Figure 3 A schematic diagram of the lifting operation of this utility model.

[0017] In the diagram: 1—Boom mechanism, 2—Insulated main boom, 200—First connecting frame, 201—Second connecting frame, 202—Connecting frame pivot, 3—Insulated tie rod, 300—First tie rod pivot, 301—Second tie rod pivot, 4—Connecting bracket, 5—Leveling bracket, 6—Working bucket, 7—Boom luffing cylinder, 8—Leveling cylinder fixed shaft, 9—Leveling cylinder. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Specific embodiments are as follows: Figures 1 to 3 As shown in the accompanying drawings, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] This embodiment provides an insulated boom mechanism suitable for aerial work platforms with voltages less than or equal to 66KV, for installation at the front end of boom mechanism 1 on the lower arm of the aerial work vehicle, such as... Figures 1 to 3As shown, the boom mechanism includes an insulated main boom 2, two insulated tie rods 3 parallel to the insulated main boom 2, and a work bucket 6 installed at the free end of the insulated main boom 2. The insulated main boom 2 is arranged below the middle of the boom mechanism 1. One end of the insulated main boom 2 is rotatably connected to the boom mechanism 1 through a first connecting frame 200, and the other end is fixedly installed with a second connecting frame 201. A connecting bracket 4 is rotatably connected to the second connecting frame 201. The two insulated tie rods 3 are arranged parallel above the insulated main boom 2, and one end of the two insulated tie rods 3 is rotatably connected to the boom mechanism 1 through a first tie rod pivot 300, and the other end is rotatably connected to the connecting bracket 4 through a second tie rod pivot 301. A boom luffing cylinder 7 is provided between shaft 300 and the first connecting frame 200. The boom luffing cylinder 7 is located above the middle of the front end of the boom mechanism 1. The cylinder body of the boom luffing cylinder 7 is fixed on the first pull rod shaft 300, and the piston end of the boom luffing cylinder 7 is fixed on the first connecting frame 200. The first connecting frame 200 is connected to the lower front end of the boom mechanism 1. The first connecting frame 200 is rotatably connected to the boom mechanism 1 through the connecting frame shaft 202. The area of ​​the boom mechanism 1 between the first pull rod shaft 300 and the connecting frame shaft 202 is parallel to the connecting bracket 4. The boom mechanism 1, the insulated main boom 2, the two insulated pull rods 3 and the connecting bracket 4 form a parallelogram mechanism.

[0022] The embodiment provides an insulated boom mechanism suitable for aerial work platforms with voltages less than or equal to 46KV, such as Figures 1 to 3 As shown, the working bucket 6 is rotatably mounted on the free end of the insulated main arm 2 via a leveling bracket 5. The lower end of the leveling bracket 5 and the connecting bracket 4 are rotatably connected to the second connecting frame 201 via a leveling cylinder fixing shaft 8. A leveling cylinder 9 is provided between the leveling cylinder fixing shaft 8 and the leveling bracket 5. The cylinder body of the leveling cylinder 9 is rotatably connected to the upper part of the leveling bracket 5, and the piston end of the leveling cylinder 9 is fixed to the leveling cylinder fixing shaft 8. The leveling cylinder fixing shaft 8 is rotatably connected to the second connecting frame 201. The leveling bracket 5 includes an inclined area and a vertical area. The lower end of its inclined area is rotatably connected to the second connecting frame 201. The working bucket 6 is fixedly mounted on the upper end of the vertical area of ​​the leveling bracket 5, and the working bucket 6 is always in a vertical state with its opening facing upward. The leveling cylinder 9 is rotatably connected to the upper part of the vertical area of ​​the leveling bracket 5 via a rotating shaft.

[0023] This utility model is installed at the front end of the main boom of an aerial work platform. During operation, it consists of three insulated rods: the large cross-sectional size of the insulated main boom 2 ensures stability; the boom luffing cylinder 7 pushes the insulated main boom 2; and the two insulated tie rods 3 of the boom link keep the connecting bracket 4 parallel. The work bucket 6 moves up and down with the boom luffing cylinder 7. During operation, the boom luffing cylinder 7 pushes the insulated main boom 2, and the insulated tie rods 3 of the boom link keep the connecting bracket 4 parallel. Its unique leveling method and layout (the insulation distance of any work bucket is over 300mm) ensures the work bucket achieves insulation. When the insulated parallel main boom 2 is in the horizontal direction, the insulated boom mechanism can continue to luff upwards, providing better flexibility in specific or narrow spaces. When the boom is raised to its highest point, the parallel insulated boom mechanism increases the working space and range, improving the practicality and competitive advantage of the aerial work platform.

[0024] This invention utilizes a boom luffing cylinder 7 to drive the insulated main boom 2, which in turn drives the insulated boom tie rod 3 for parallel luffing, thus transporting the work bucket and personnel to the designated height. Compared to the commonly used four-bar parallel method, this simplifies the structure, accelerates production efficiency, and reduces production costs. This novel luffing mechanism provides an innovative approach, saving on FRP (fiberglass reinforced plastic) usage, reducing production costs, and enhancing the sales competitiveness of self-propelled insulated aerial work platforms.

[0025] The above description is merely one embodiment of this utility model, and while it is quite specific and detailed, it should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An insulated boom mechanism suitable for aerial work platforms with voltages less than or equal to 66KV, for installation at the front end of the boom mechanism (1) of the lower boom of an aerial work vehicle, characterized in that: The boom mechanism includes an insulated main boom (2), two insulated tie rods (3) parallel to the insulated main boom (2), and a work bucket (6) installed at the free end of the insulated main boom (2). The insulated main boom (2) is arranged below the middle of the boom mechanism (1). One end of the insulated main boom (2) is rotatably connected to the boom mechanism (1) through a first connecting frame (200), and the other end is rotatably connected to a connecting bracket (4). The two insulated tie rods (3) are arranged parallel above the insulated main boom (2), and one end of the two insulated tie rods (3) is rotatably connected to the boom mechanism (1) through a first tie rod pivot (300), and the other end is connected to a second tie rod pivot (300). 01) Rotary connection with connecting bracket (4), a small boom luffing cylinder (7) is provided between the first pull rod shaft (300) and the first connecting frame (200). The small boom luffing cylinder (7) is placed in the middle above the front end of the boom mechanism (1). The cylinder body of the small boom luffing cylinder (7) is fixed on the first pull rod shaft (300), and the piston end of the small boom luffing cylinder (7) is fixed on the first connecting frame (200). The working bucket (6) is rotatably installed on the free end of the insulated main boom (2) through the leveling bracket (5). The leveling bracket (5) is rotatably connected to the insulated main boom (2), and the working bucket (6) is vertically fixed on the leveling bracket (5).

2. The insulated forearm mechanism for a high-altitude work platform with a voltage of less than or equal to 66KV as described in claim 1, characterized in that: The free end of the insulating main arm (2) is fixedly installed with a second connecting frame (201). The lower ends of the leveling bracket (5) and the connecting bracket (4) are rotatably connected to the second connecting frame (201) through the leveling cylinder fixing shaft (8). A leveling cylinder (9) is provided between the leveling cylinder fixing shaft (8) and the leveling bracket (5). The cylinder body of the leveling cylinder (9) is rotatably connected to the upper part of the leveling bracket (5). The piston end of the leveling cylinder (9) is fixed to the leveling cylinder fixing shaft (8). The leveling cylinder fixing shaft (8) is rotatably connected to the second connecting frame (201).

3. An insulated boom mechanism for an aerial work platform with a voltage of 66KV or less, as described in claim 1 or 2, characterized in that: The first connecting frame (200) is connected to the lower front end of the boom mechanism (1). The first connecting frame (200) is rotatably connected to the boom mechanism (1) through the connecting frame pivot (202). The area of ​​the boom mechanism (1) between the first tie rod pivot (300) and the connecting frame pivot (202) is parallel to the connecting bracket (4). The boom mechanism (1), the insulated main boom (2), the two insulated tie rods (3) and the connecting bracket (4) form a parallelogram mechanism.

4. An insulated forearm mechanism for an aerial work platform with a voltage of less than or equal to 66KV, as described in claim 2, is characterized in that: The leveling bracket (5) includes an inclined area and a vertical area. The lower end of the inclined area is rotatably connected to the second connecting frame (201). The working bucket (6) is fixedly installed at the upper end of the vertical area of ​​the leveling bracket (5). The leveling cylinder (9) is rotatably connected to the upper part of the vertical area of ​​the leveling bracket (5) through a rotating shaft.

Images