CN213059968U

CN213059968U - Telescopic arm

Info

Publication number: CN213059968U
Application number: CN202021798967.6U
Authority: CN
Inventors: 刘星河; 郑小波; 张泉泉
Original assignee: Lantanke Industrial Automation Jiangsu Co ltd
Current assignee: Lantanke Industrial Automation Jiangsu Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-04-27
Anticipated expiration: 2030-08-25

Abstract

The utility model discloses a telescopic boom, including fixing base and the outer arm of slip setting on the fixing base, be provided with the motor on the fixing base, the output shaft of motor passes through the transmission shaft and is connected with the one end of transmission band, the other end and the outer arm of transmission band are connected, it is provided with last axis of rotation and lower axis of rotation to rotate on the outer arm, the cover is equipped with closed loop chain and can take place to rotate between last axis of rotation and the lower axis of rotation, one side of closed loop chain is located the outer arm outside and sets up the fixed plate cover on the fixing base and establish above that, the inside slip of outer arm is provided with the inner arm, the opposite side of closed loop chain is located the inside and inner arm of outer arm and is.

Description

Telescopic arm

Technical Field

The utility model relates to a flexible arm among the engineering machine tool especially relates to a flexible arm.

Background

At present, in engineering machinery, a plurality of working arms of the machinery are provided with telescopic arms, such as a truck crane, a rock drill, a concrete wet-spraying machine and the like. The traditional telescopic boom consists of an inner boom and an outer boom, the inner boom is sleeved in the outer boom, one end of the inner boom can extend out or retract into the outer boom, and the inner boom is generally pushed by an oil cylinder. The existing telescopic arm can only move through an inner arm sleeve, and the length of the inner arm and the outer arm which are overlapped together is too long, so that the whole structure of the telescopic arm is heavy. Therefore, for a telescopic arm, the length of the inner arm and the outer arm which are overlapped together is too long, so that the overall structure of the telescopic arm is heavy and heavy.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, an object of the present invention is to provide a telescopic boom with a simple structure.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a telescopic boom, include the fixing base and slide the outer arm that sets up on the fixing base, be provided with the motor on the fixing base, the output shaft of motor passes through the transmission shaft and is connected with the one end of transmission band, the other end and the outer arm of transmission band are connected, it is provided with upper rotating shaft and lower rotating shaft to rotate on the outer arm, the cover is equipped with closed loop chain and can takes place to rotate between upper rotating shaft and the lower rotating shaft, one side of closed loop chain is located the outer arm outside and sets up the fixed plate cover on the fixing base and establish above that, the inside slip of outer arm is provided with the inner arm, the.

The utility model relates to a flexible arm's beneficial effect is, fixes the fixing base after, opens the motor, and motor output shaft rotates, drives the transmission band clockwise movement, and the transmission band drives the outer arm and moves down. And because the fixing seat is fixed, the closed-loop chain is arranged on the outer arm, when the outer arm moves downwards, one side of the closed-loop chain, which is positioned in the outer arm, rotates at the fixed plate and generates friction between the closed-loop chain and the fixed plate, and the generated friction force enables the closed-loop chain on the outer arm to rotate clockwise. The inner arm is connected with the other side of the closed-loop chain, which is positioned inside the outer arm, the closed-loop chain rotates to drive the other side of the closed-loop chain, which is positioned inside the outer arm, to move downwards, and then the inner arm is driven to move downwards while the outer arm moves downwards. Similarly, when the outer arm moves upwards, the closed-loop chain rotates anticlockwise, and the inner arm moves upwards while the outer arm moves upwards. The telescopic arm with the structure has a simple structure, only uses one motor as a driving source, and has small volume. Meanwhile, when the inner arm moves upwards or downwards, the outer arm also moves upwards or downwards simultaneously, so that the length of the inner arm and the outer arm which are overlapped together is reduced during working, and excessive space cannot be occupied.

As a further improvement of the utility model, an outer arm guide rail is arranged on the fixing base, an outer arm slider is arranged outside the outer arm, and the outer arm slider is embedded into the outer arm guide rail and can slide. The outer arm can keep stable when moving on the fixed seat.

As a further improvement, the utility model is that the inner arm guide rail is arranged on the inner arm, the inner arm slide block is arranged inside the outer arm, and the inner arm slide block is embedded into the inner arm guide rail and can slide. The inner arm is kept stable when moving on the outer arm.

As a further improvement of the utility model, the inner arm sliding blocks are provided with a plurality of inner arm sliding blocks. Further stabilizing the movement of the inner arm on the outer arm.

As a further improvement, the inner arm is provided with an inner arm fixing block, and the inner arm fixing block is connected with one side of the closed loop chain inside the outer arm. The inner arm fixing block enables the inner arm to be stably connected with the closed-loop chain, and further enables the inner arm to be stable when moving on the outer arm.

As a further improvement of the utility model, the inner arm fixing blocks are provided with a plurality of fixing blocks. Further stabilizing the movement of the inner arm on the outer arm.

As a further improvement of the utility model, a plurality of openings are arranged on the outer arm. The condition that the inner arm slides in the outer arm can be observed conveniently.

Drawings

FIG. 1 is a structural view of the present embodiment;

fig. 2 is a bottom view of the present embodiment.

In the figure:

1-a fixed seat; 2, a motor; 3-outer arm; 31-outer arm slider; 32-inner arm slider; 4-inner arm; 41-inner arm guide rail; 5-a transmission shaft; 6, conveying the belt; 7-closed loop chain; 8-outer arm guide rails; 9-inner arm fixing block; 10-lower rotating shaft; 11-fixing the plate.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to the attached drawings 1-2, the telescopic boom of the embodiment includes a fixing seat 1 and an outer arm 3 slidably disposed on the fixing seat 1, a motor 2 is disposed on the fixing seat 1, an output shaft of the motor 2 is connected with one end of a transmission belt 6 through a transmission shaft 5, the other end of the transmission belt 6 is connected with the outer arm 3, an upper rotating shaft and a lower rotating shaft 10 are rotatably disposed on the outer arm 3, a closed-loop chain 7 is sleeved between the upper rotating shaft and the lower rotating shaft 10, the closed-loop chain 7 can rotate, one side of the closed-loop chain 7 is disposed outside the outer arm 3 and is sleeved on a fixing plate 11 disposed on the fixing seat 1, an inner arm 4 is slidably disposed inside the outer arm 3, and the other side of the closed-loop chain 7 is disposed inside the.

After fixing base 1, start

motor

2, 2 output shafts of motor rotate, drive transmission band 6 clockwise migration, drive outer arm 3 and move down on fixing base 1. And because fixing base 1 is the rigid, closed loop chain 7 sets up on outer arm 3, and when outer arm 3 moved down, closed loop chain 7 was located the inside one side of outer arm 3 and takes place to rotate and produce the friction between the two at fixed plate 11 department, and the closed loop chain 7 on the frictional force messenger outer arm 3 takes place clockwise rotation. Inner arm 4 is located the inside opposite side of outer arm 3 with closed loop chain 7 and is connected, and closed loop chain 7 rotates, drives closed loop chain 7 and is located the inside opposite side downstream of outer arm 3, and then drives inner arm 4 and also carries out downstream when outer arm 3 downstream. Similarly, when the outer arm 3 moves upward, the closed-loop chain 7 rotates counterclockwise, and the inner arm 4 moves upward while the outer arm 3 moves upward. The telescopic arm with the structure has simple structure, only uses one motor 2 as a driving source, and has small volume. Meanwhile, when the inner arm 4 moves upwards or downwards, the outer arm 3 also moves upwards or downwards at the same time, so that the length of the inner arm 4 and the outer arm 3 which are overlapped together is reduced during working, and excessive space is not occupied.

The fixing base 1 of this embodiment is provided with an outer arm guide rail 8, and the outside of the outer arm 3 is provided with an outer arm slider 31, and the outer arm slider 31 is embedded into the outer arm guide rail 8 and can slide. So that the outer arm 3 is kept stable when moving on the fixed seat 1.

In the present embodiment, the inner arm 4 is provided with an inner arm guide 41, the inner arm slider 32 is provided inside the outer arm 3, and the inner arm slider 32 is slidably fitted into the inner arm guide 41. Keeping the inner arm 4 stable when moving over the outer arm 3.

The inner arm slider 32 of the present embodiment is plural. Further stabilizing the movement of the inner arm 4 on the outer arm 3.

The inner arm 4 of this embodiment is provided with an inner arm fixing block 9, and the inner arm fixing block 9 is connected with one side of the closed-loop chain 7 inside the outer arm 3. The inner arm fixing block 9 stably connects the inner arm 4 and the closed-loop chain 7, and further keeps the inner arm 4 stable when moving on the outer arm 3.

The inner arm fixing block 9 of the present embodiment is plural. Further stabilizing the movement of the inner arm 4 on the outer arm 3.

The outer arm 3 of this embodiment is provided with a plurality of openings. The condition that the inner arm 4 slides in the outer arm 3 is convenient to observe.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A telescopic boom, characterized in that: comprises a fixed seat (1) and an outer arm (3) arranged on the fixed seat (1) in a sliding way, the fixed seat (1) is provided with a motor (2), an output shaft of the motor (2) is connected with one end of a transmission belt (6) through a transmission shaft (5), the other end of the transmission belt (6) is connected with the outer arm (3), an upper rotating shaft and a lower rotating shaft (10) are rotatably arranged on the outer arm (3), a closed loop chain (7) is sleeved between the upper rotating shaft and the lower rotating shaft (10), the closed loop chain (7) can rotate, one side of the closed loop chain (7) is positioned outside the outer arm (3) and is sleeved with a fixing plate (11) arranged on the fixing seat (1), the inner arm (4) is arranged inside the outer arm (3) in a sliding mode, and the other side of the closed-loop chain (7) is located inside the outer arm (3) and connected with the inner arm (4).

2. A telescopic arm according to claim 1, characterized in that: the outer arm guide rail (8) is arranged on the fixing seat (1), an outer arm sliding block (31) is arranged outside the outer arm (3), and the outer arm sliding block (31) is embedded into the outer arm guide rail (8) and can slide.

3. A telescopic arm according to claim 1, characterized in that: the inner arm is characterized in that an inner arm guide rail (41) is arranged on the inner arm (4), an inner arm sliding block (32) is arranged inside the outer arm (3), and the inner arm sliding block (32) is embedded into the inner arm guide rail (41) and can slide.

4. A telescopic arm according to claim 3, characterized in that: the inner arm sliding blocks (32) are multiple.

5. A telescopic arm according to claim 1, characterized in that: an inner arm fixing block (9) is arranged on the inner arm (4), and the inner arm fixing block (9) is connected with one side, located inside the outer arm (3), of the closed-loop chain (7).

6. A telescopic arm according to claim 5, characterized in that: the number of the inner arm fixing blocks (9) is multiple.

7. A telescopic arm according to claim 1, characterized in that: the outer arm (3) is provided with a plurality of openings.