Pulley driving guide structure for adjustable telescopic arm

Abstract

The utility model discloses a pulley driving and guiding structure for an adjustable telescopic arm, and relates to a pulley driving and guiding structure, in particular to the pulley driving and guiding structure for the adjustable telescopic arm. The utility model aims to solve the problem that a sliding telescopic arm and a sleeved telescopic arm can generate a retardation phenomenon after being used for a period of time, so that the telescopic stability is influenced. The device comprises an extension steel wire, a contraction steel wire, a second-section arm front pulley combination, a second-section arm fixed pulley combination, a third-section arm front pulley combination, a third-section arm fixed pulley combination, a fourth-section arm front pulley combination, a fourth-section arm fixed pulley combination, a first-section arm pulley combination, a second-section arm movable pulley combination and a second-section arm pulley combination, and the third arm movable pulley assembly is combined with the third arm pulley assembly. The utility model belongs to the field of machinery.

Description

Technical Field

[0001] The utility model relates to a pulley drive guide structure, in particular to a pulley drive guide structure for an adjustable telescopic arm, belonging to the field of machinery. Background Art

[0002] The tank body refers to a closed tank container such as a reactor, a liquid storage tank, a fermentation tank, etc. The tank body needs to be cleaned after use to ensure that there will be no residue on the inner wall of the tank to contaminate the stored content in the tank when it is used next time. At present, the commonly used method for cleaning the tank body is manual cleaning. The manual cleaning method is to set a manual cleaning port on the tank body, and then the worker enters the tank body and uses a water pipe or a cleaner to clean the inner wall of the tank. The efficiency of manual cleaning of the tank body is low, and the labor intensity of the workers is high. In addition, some special tanks have corrosive and odorous residues, which will have a certain impact on human health. Therefore, there is an urgent need for a method that can automatically clean the tank body. An automatic tank cleaning system is disclosed, which uses a device for cleaning the inside of the tank to replace manual cleaning of the tank; the invention patent with publication number CN111468490A and application date April 29, 2020, discloses a tank automatic cleaning system. The system cooperates with a coil device, a hose automatic transmission device, a lifting device and a tilting arm cleaning device to replace manual automatic cleaning of the tank, thereby shortening the cleaning time and saving time, effort and cost; however, in actual use of the system, due to its use of a sliding telescopic arm structure, the stroke of a single-section telescopic arm is short, the stability is poor, and the structure is complex, which is not convenient for maintenance and installation. Utility Model Content

[0003] The utility model aims to solve the problem that the existing automatic tank cleaning system uses a sliding telescopic arm structure, resulting in a short stroke and poor stability of a single telescopic arm, and thus proposes an adjustable telescopic arm pulley drive guide structure.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows: the utility model includes an extending steel wire, a retracting steel wire, a front pulley assembly of the second arm, a fixed pulley assembly of the second arm, a front pulley assembly of the third arm, a fixed pulley assembly of the third arm, a front pulley assembly of the fourth arm, a fixed pulley assembly of the fourth arm, a pulley assembly of the first arm, a movable pulley assembly of the second arm, a pulley assembly of the second arm, a movable pulley assembly of the third arm and a pulley assembly of the third arm;

[0005] The front pulley assembly of the second section arm and the fixed pulley assembly of the second section arm are sequentially installed at the front end of the second section arm from front to back, the front pulley assembly of the third section arm and the fixed pulley assembly of the third section arm are sequentially installed at the front end of the third section arm from front to back, the front pulley assembly of the fourth section arm and the fixed pulley assembly of the fourth section arm are sequentially installed at the front end of the fourth section arm from front to back, the pulley assembly of the first section arm is installed at the rear end of the first section arm, and the pulley assembly of the first section arm is located in the rear part of the second section arm, the movable pulley assembly of the second section arm and the pulley assembly of the second section arm are installed at the rear end of the second section arm, and the movable pulley assembly of the second section arm and the pulley assembly of the second section arm are located in the rear part of the third section arm, the movable pulley assembly of the third section arm and the pulley assembly of the third section arm are installed at the rear end of the third section arm, and the movable pulley assembly of the third section arm and the pulley assembly of the third section arm are located in the rear part of the fourth section arm;

[0006] One end of the extended steel wire is connected to the driving device, and the other end of the extended steel wire passes through the fourth section arm fixed pulley assembly, the third section arm movable pulley assembly, the third section arm fixed pulley assembly, the second section arm movable pulley assembly, and the second section arm fixed pulley assembly in sequence, and is fixedly connected to the first section arm pulley assembly; one end of the retracted steel wire is connected to the driving device, and the other end of the retracted steel wire is fixedly connected to the first section arm pulley assembly.

[0007] Furthermore, the utility model also includes a third-section arm wire guide wheel, which is installed in the front end of the third section arm, one end of the extended steel wire is connected to the driving device, and the other end of the extended steel wire passes through the fourth-section arm fixed pulley assembly, the third-section arm movable pulley assembly, the third-section arm fixed pulley assembly, the third-section arm wire guide wheel, the second-section arm movable pulley assembly, and the second-section arm fixed pulley assembly, and then is fixedly connected to the first-section arm pulley assembly.

[0008] Furthermore, the second-section arm front pulley assembly includes a second-section arm front pulley mounting plate and four second-section arm front pulleys; the second-section arm front pulley mounting plate is fixedly mounted on the front end of the second section arm, the four second-section arm front pulleys are mounted on the second-section arm front pulley mounting plate, each second-section arm front pulley is rollingly connected to the outer side wall of the first section arm, and the second-section arm fixed pulley assembly is mounted on the second-section arm front pulley mounting plate.

[0009] Furthermore, the four second-section arm front pulleys are divided into two groups, each group consists of two second-section arm front pulleys, and the two groups of second-section arm front pulleys are symmetrically arranged on both sides of the first section arm.

[0010] Furthermore, the third-section arm front pulley assembly includes a third-section arm front pulley mounting plate and four third-section arm front pulleys; the third-section arm front pulley mounting plate is fixedly mounted on the front end of the third-section arm, and the four third-section arm front pulleys are mounted on the third-section arm front pulley mounting plate, each third-section arm front pulley is rollingly connected to the outer side wall of the second section arm, and the third-section arm fixed pulley assembly is mounted on the third-section arm front pulley mounting plate.

[0011] Furthermore, the four third-section arm front pulleys are divided into two groups, each group consists of two third-section arm front pulleys, and the two groups of third-section arm front pulleys are symmetrically arranged on both sides of the second section arm.

[0012] Furthermore, the fourth arm front pulley assembly includes a fourth arm front pulley mounting plate and four fourth arm front pulleys; the fourth arm front pulley mounting plate is fixedly mounted on the front end of the fourth arm, the four fourth arm front pulleys are mounted on the fourth arm front pulley mounting, each fourth arm front pulley is rollingly connected to the outer side wall of the third arm, and the fourth arm fixed pulley assembly is mounted on the fourth arm front pulley mounting plate.

[0013] Furthermore, the four fourth-section arm front pulleys are divided into two groups, each group consists of two fourth-section arm front pulleys, and the two groups of fourth-section arm front pulleys are symmetrically arranged on both sides of the third-section arm.

[0014] The beneficial effects of the utility model are as follows: the utility model adopts the method of steel wire driving pulley to realize multi-stage telescopic extension and retraction, and each stage of the telescopic arm is supported and guided by four pulleys during the extension and retraction process, which effectively increases the stroke of the single-stage telescopic arm and improves the working stability of the telescopic arm; the overall structure of the utility model is simple, the number of parts is small, and it is easy to install and maintain; the utility model adopts pulleys as guide wheels, which eliminates the problem of blocking of the telescopic arm after a period of use, and improves the stability of the operation of the telescopic arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0016] Specific implementation method 1: Combination Figure 1 The present embodiment is described. The pulley drive guide structure for an adjustable telescopic arm described in the present embodiment includes an extending steel wire, a retracting steel wire, a second-section arm front pulley assembly 2, a second-section arm fixed pulley assembly 3, a third-section arm front pulley assembly 5, a third-section arm fixed pulley assembly 6, a fourth-section arm front pulley assembly 9, a fourth-section arm fixed pulley assembly 10, a first-section arm pulley assembly 12, a second-section arm movable pulley assembly 13, a second-section arm pulley assembly 14, a third-section arm movable pulley assembly 15, and a third-section arm pulley assembly 16.

[0017] The second-section arm front pulley assembly 2 and the second-section arm fixed pulley assembly 3 are sequentially installed at the front end of the second-section arm 4 from front to back, the third-section arm front pulley assembly 5 and the third-section arm fixed pulley assembly 6 are sequentially installed at the front end of the third-section arm 8 from front to back, the fourth-section arm front pulley assembly 9 and the fourth-section arm fixed pulley assembly 10 are sequentially installed at the front end of the fourth-section arm 11 from front to back, the first-section arm pulley assembly 12 is installed at the rear end of the first-section arm 1, and the first-section arm pulley assembly 12 is located in the rear part of the second-section arm 4, the second-section arm movable pulley assembly 13 and the second-section arm pulley assembly 14 are installed at the rear end of the second-section arm 4, and the second-section arm movable pulley assembly 13 and the second-section arm pulley assembly 14 are located in the rear part of the third-section arm 8, the third-section arm movable pulley assembly 15 and the third-section arm pulley assembly 16 are installed at the rear end of the third-section arm 8, and the third-section arm movable pulley assembly 15 and the third-section arm pulley assembly 16 are located in the rear part of the fourth-section arm 14;

[0018] One end of the extended steel wire is connected to the driving device, and the other end of the extended steel wire passes through the fourth section arm fixed pulley assembly 10, the third section arm movable pulley assembly 15, the third section arm fixed pulley assembly 6, the second section arm movable pulley assembly 13, and the second section arm fixed pulley assembly 3 in sequence, and is fixedly connected to the first section arm pulley assembly 12; one end of the retracted steel wire is connected to the driving device, and the other end of the retracted steel wire is fixedly connected to the first section arm pulley assembly 12.

[0019] Specific implementation method 2: Combination Figure 1 This embodiment describes an adjustable telescopic arm pulley drive guide structure further comprising a third-section arm wire guide pulley 7, which is mounted within the front end of the third-section arm 8. One end of the extended wire is connected to the drive device, and the other end of the extended wire passes sequentially through the fourth-section arm fixed pulley assembly 10, the third-section arm movable pulley assembly 15, the third-section arm fixed pulley assembly 6, the third-section arm wire guide pulley 7, the second-section arm movable pulley assembly 13, and the second-section arm fixed pulley assembly 3, before being fixedly connected to the first-section arm pulley assembly 12. Other components and connection relationships are the same as those in the first embodiment.

[0020] Specific implementation method three: Combination Figure 1 This embodiment describes a pulley-driven guide structure for an adjustable telescopic arm. The second-arm front pulley assembly 2 includes a second-arm front pulley mounting plate 201 and four second-arm front pulleys 202. The second-arm front pulley mounting plate 201 is fixedly mounted to the front end of the second arm 4. The four second-arm front pulleys 202 are mounted on the second-arm front pulley mounting plate 201. Each second-arm front pulley 202 is in rolling connection with the outer wall of the first arm 1. The second-arm fixed pulley assembly 3 is mounted on the second-arm front pulley mounting plate 201. Other components and connection relationships are the same as those in the first embodiment.

[0021] Specific implementation method four: Combination Figure 1 This embodiment describes a pulley-driven guide structure for an adjustable telescopic boom. The four second-section arm front pulleys 202 of this embodiment are divided into two groups, each consisting of two second-section arm front pulleys 202. The two groups of second-section arm front pulleys 202 are symmetrically arranged on either side of the first-section arm 1. Other components and connections are the same as those in the third embodiment.

[0022] Specific implementation method five: Combination Figure 1 This embodiment describes a pulley-driven guide structure for an adjustable telescopic arm. The third-arm front pulley assembly 5 includes a third-arm front pulley mounting plate 501 and four third-arm front pulleys 502. The third-arm front pulley mounting plate 501 is fixedly mounted to the front end of the third-arm 8. The four third-arm front pulleys 502 are mounted on the third-arm front pulley mounting plate 501. Each third-arm front pulley 502 is in rolling connection with the outer wall of the second-arm 4. The third-arm fixed pulley assembly 6 is mounted on the third-arm front pulley mounting plate 501. Other components and connection relationships are the same as those in the first embodiment.

[0023] Specific implementation method six: combination Figure 1 This embodiment describes a pulley-driven guide structure for an adjustable telescopic arm. The four third-arm front pulleys 502 of this embodiment are divided into two groups, each group consisting of two third-arm front pulleys 502. The two groups of third-arm front pulleys 502 are symmetrically arranged on either side of the second arm 4. The remaining components and connection relationships are the same as those in the fifth embodiment.

[0024] Specific implementation method seven: combination Figure 1 This embodiment describes a pulley-driven guide structure for an adjustable telescopic arm, comprising a fourth-arm front pulley assembly 9 comprising a fourth-arm front pulley mounting plate 901 and four fourth-arm front pulleys 902. The fourth-arm front pulley mounting plate 901 is fixedly mounted on the front end of the fourth-arm 11, and the four fourth-arm front pulleys 902 are mounted on the fourth-arm front pulley mounting plate 901. Each fourth-arm front pulley 902 is in rolling connection with the outer wall of the third-arm 8. The fourth-arm fixed pulley assembly 10 is mounted on the fourth-arm front pulley mounting plate 901. Other components and connection relationships are the same as those of the first embodiment.

[0025] Specific implementation method eight: combination Figure 1 This embodiment describes an adjustable telescopic arm pulley drive guide structure. The four fourth-section arm front pulleys 902 of this embodiment are divided into two groups, each group consisting of two fourth-section arm front pulleys 902. The two groups of fourth-section arm front pulleys 902 are symmetrically arranged on both sides of the third-section arm 8. The other components and connection relationships are the same as those in the seventh embodiment.

[0026] How it works

[0027] During operation, the driving device pulls the extension wire, which in turn drives the first arm 1, the second arm 4, and the third arm 8 to extend; after completing the work, the driving device pulls the retraction wire, which pulls the first arm 1, the second arm 4, and the third arm 8 back and retracts them together.

[0028] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A pulley driven guide structure for an adjustable telescopic arm, characterized in that: The pulley drive guide structure for an adjustable telescopic arm comprises an extending steel wire, a retracting steel wire, a front pulley assembly (2) of the second arm, a fixed pulley assembly (3) of the second arm, a front pulley assembly (5) of the third arm, a fixed pulley assembly (6) of the third arm, a front pulley assembly (9) of the fourth arm, a fixed pulley assembly (10) of the fourth arm, a pulley assembly (12) of the first arm, a movable pulley assembly (13) of the second arm, a pulley assembly (14) of the second arm, a movable pulley assembly (15) of the third arm and a pulley assembly (16) of the third arm; The second arm front pulley assembly (2) and the second arm fixed pulley assembly (3) are sequentially installed at the front end of the second arm (4) from front to back, the third arm front pulley assembly (5) and the third arm fixed pulley assembly (6) are sequentially installed at the front end of the third arm (8) from front to back, the fourth arm front pulley assembly (9) and the fourth arm fixed pulley assembly (10) are sequentially installed at the front end of the fourth arm (11) from front to back, the first arm pulley assembly (12) is installed at the rear end of the first arm (1), and the first arm pulley assembly (12) The movable pulley assembly (13) and the pulley assembly (14) of the second arm are installed at the rear end of the second arm (4), and the movable pulley assembly (13) and the pulley assembly (14) of the second arm are located at the rear end of the third arm (8), the movable pulley assembly (15) and the pulley assembly (16) of the third arm are installed at the rear end of the third arm (8), and the movable pulley assembly (15) and the pulley assembly (16) of the third arm are located at the rear end of the fourth arm (11); One end of the extended steel wire is connected to the driving device, and the other end of the extended steel wire passes through the fourth section arm fixed pulley assembly (10), the third section arm movable pulley assembly (15), the third section arm fixed pulley assembly (6), the second section arm movable pulley assembly (13), and the second section arm fixed pulley assembly (3) in sequence, and is fixedly connected to the first section arm pulley assembly (12); one end of the retractable steel wire is connected to the driving device, and the other end of the retractable steel wire is fixedly connected to the first section arm pulley assembly (12).

2. According to claim 1, a pulley driving guide structure for an adjustable telescopic arm, characterized in that: The pulley drive guide structure for an adjustable telescopic arm also includes a third arm wire guide wheel (7), which is installed in the front end of the third arm (8), one end of the extended wire is connected to the driving device, and the other end of the extended wire passes through the fourth arm fixed pulley assembly (10), the third arm movable pulley assembly (15), the third arm fixed pulley assembly (6), the third arm wire guide wheel (7), the second arm movable pulley assembly (13), and the second arm fixed pulley assembly (3) in sequence, and is then fixedly connected to the first arm pulley assembly (12).

3. The pulley drive guide structure for an adjustable telescopic arm according to claim 1, characterized in that: The second-arm front pulley assembly (2) comprises a second-arm front pulley mounting plate (201) and four second-arm front pulleys (202); the second-arm front pulley mounting plate (201) is fixedly mounted on the front end of the second-arm (4); the four second-arm front pulleys (202) are mounted on the second-arm front pulley mounting plate (201); each second-arm front pulley (202) is rollingly connected to the outer side wall of the first-arm (1); and the second-arm fixed pulley assembly (3) is mounted on the second-arm front pulley mounting plate (201).

4. The pulley drive guide structure for an adjustable telescopic arm according to claim 3, characterized in that: The four second-section arm front pulleys (202) are divided into two groups, each group is composed of two second-section arm front pulleys (202), and the two groups of second-section arm front pulleys (202) are symmetrically arranged on both sides of the first section arm (1).

5. The pulley drive guide structure for an adjustable telescopic arm according to claim 1, characterized in that: The third arm front pulley assembly (5) comprises a third arm front pulley mounting plate (501) and four third arm front pulleys (502); the third arm front pulley mounting plate (501) is fixedly mounted on the front end of the third arm (8); the four third arm front pulleys (502) are mounted on the third arm front pulley mounting plate (501); each third arm front pulley (502) is rollingly connected to the outer side wall of the second arm (4); and the third arm fixed pulley assembly (6) is mounted on the third arm front pulley mounting plate (501).

6. The pulley drive guide structure for an adjustable telescopic arm according to claim 5, characterized in that: The four third-arm front pulleys (502) are divided into two groups, each group is composed of two third-arm front pulleys (502), and the two groups of third-arm front pulleys (502) are symmetrically arranged on both sides of the second arm (4).

7. The pulley drive guide structure for an adjustable telescopic arm according to claim 1, characterized in that: The fourth arm front pulley assembly (9) comprises a fourth arm front pulley mounting plate (901) and four fourth arm front pulleys (902); the fourth arm front pulley mounting plate (901) is fixedly mounted on the front end of the fourth arm (11); the four fourth arm front pulleys (902) are mounted on the fourth arm front pulley mounting plate (901); each fourth arm front pulley (902) is rollingly connected to the outer side wall of the third arm (8); and the fourth arm fixed pulley assembly (10) is mounted on the fourth arm front pulley mounting plate (901).

8. The pulley drive guide structure for an adjustable telescopic arm according to claim 7, characterized in that: The four fourth-section arm front pulleys (902) are divided into two groups, each group is composed of two fourth-section arm front pulleys (902), and the two groups of fourth-section arm front pulleys (902) are symmetrically arranged on both sides of the third-section arm (8).

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