Dredging robot for traction pipe

Abstract

The traction pipe desilting robot comprises two mounting boxes which are oppositely arranged, and an adjusting connecting block is connected between the two mounting boxes; the rotating shaft is arranged in the mounting box, the length of the rotating shaft is adjustable, the two ends of the rotating shaft extend out of the mounting box to form fixed ends, and rolling wheels are fixedly mounted at the fixed ends; the driving motor is arranged in the mounting box and drives the rotating shaft to rotate; the connecting column is arranged at the end, away from the other mounting box, of one mounting box, a plurality of arc-shaped scraping plates are arranged on the connecting column, operation is easy, and use is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a traction pipe dredging robot. BACKGROUND

[0002] Industrial traction pipe is a tool for pipe construction in trenchless technology, which is often used to cross terrain obstacles such as roads, railways, rivers, etc. without damaging the ground surface, especially in urban infrastructure construction and reconstruction. Industrial traction pipe generally refers to a pipe used in horizontal directional drilling (HDD) technology, which can be a plastic pipe, a steel pipe or a pipe made of other materials, used to lay water, gas, power or communication lines, according to the detailed route planning of the engineering requirements, considering the geological conditions, existing underground facilities and other factors, using a horizontal directional drilling machine to drill along the predetermined path. A guide system may be used during drilling to accurately control the direction, and after drilling is completed, multiple reaming is usually required to reach the diameter required for laying the pipe, and the pipe to be laid is connected to the end of the drill rod, and the traction force of the drill is used to pull the pipe into the reamed hole.

[0003] However, after the construction is completed, a large amount of silt will accumulate in the pipe, and the construction personnel can only clean the silt by using water flow or manual dredging and reverse cleaning, which is time-consuming and labor-intensive. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a traction pipe dredging robot, which, when in use, sets an installation box in the traction pipe, sets an arc-shaped scraper on the end of the installation box to scrape the silt in the pipe, and starts the roller at the bottom of the installation box to make the installation box work along the extension direction of the pipe.

[0005] To achieve the above-mentioned technical solutions, a traction pipe dredging robot is provided, which comprises:

[0006] Two installation boxes are arranged oppositely, and an adjusting connecting block is connected between the two installation boxes;

[0007] A rotating shaft with adjustable length is arranged in the installation box, the two ends of the rotating shaft extend out of the installation box to form fixed ends, and a roller is fixedly installed on the fixed end;

[0008] A drive motor is arranged in the installation box, and the drive motor drives the rotating shaft to rotate; and

[0009] A connecting column is arranged at the end of the installation box away from the other installation box, and a plurality of arc-shaped scrapers are arranged on the connecting column.

[0010] Further, the end of the connecting column is provided with a plurality of mounting blocks, the mounting blocks are arranged at intervals along the outer periphery of the connecting column, a mounting support is rotatably arranged on the mounting column, and the arc-shaped scraper is arranged on the mounting support.

[0011] The side of the connecting column is slidably provided with a plurality of arc-shaped rods, the end of the arc-shaped rod is arranged in the mounting support, the bracket is rotated along the sliding direction of the arc-shaped rod by sliding the arc-shaped rod, and the arc-shaped scraper is opened.

[0012] Further, the side of the connecting column is provided with a first electric push rod, and the first electric push rod drives the arc-shaped rod to slide.

[0013] Further, the mounting box is provided with a mounting plate close to one end of another mounting box, two swing rods are rotatably arranged on the mounting plate, a sleeve rod is slidably arranged on the side of the swing rod away from the mounting plate, and the end of the sleeve rod is rotatably arranged in the adjusting connecting block.

[0014] Further, a mounting block is fixedly arranged on the mounting plate, a mounting groove is formed on the side of the mounting block close to the adjusting connecting block, a swing block is rotatably arranged in the mounting groove, part of the side of the swing block extends out of the mounting block to form an extension segment, a rotating buckle is rotatably arranged on the extension segment, and the swing rod is fixedly arranged on the rotating buckle.

[0015] Further, a connecting spring is arranged between the sleeve and the rotating buckle, and the connecting spring is sleeved on the swing rod.

[0016] Further, a second electric push rod is arranged between the fixed end and the roller.

[0017] Further, a turnover block is rotatably arranged on the top of the mounting box, and the scraper is arranged on the turnover block.

[0018] Further, the driving motor is drivingly connected with a driving gear, a driven rack is formed on the rotating shaft corresponding to the driving gear, and the driving gear and the driven rack are engaged.

[0019] Further, the length of the rotating shaft is determined according to the construction requirements on site.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] By arranging the mounting box in the traction pipe, the arc-shaped scraper arranged at the end of the mounting box is used to scrape the sludge in the pipeline, the roller at the bottom of the mounting box is started to make the mounting box work along the extension direction of the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a kind of whole structure schematic diagram of towed pipe dredging robot.

[0023] Figure 2 It is the connecting effect drawing of the roller of a kind of towed pipe dredging robot.

[0024] Figure 3 It is the connecting effect drawing of the arc-shaped scraper of a kind of towed pipe dredging robot.

[0025] Figure 4 It is the connecting effect drawing of the adjusting connecting block of a kind of towed pipe dredging robot.

[0026] Figure 5 It is the connecting effect drawing of the turnover block of a kind of towed pipe dredging robot.

[0027] Legend: 1, mounting box; 2, power supply; 3, drive motor; 4, speed reducer; 5, drive gear; 6, driven rack; 7, rotating shaft; 8, roller; 9, collar; 10, second electric push rod; 11, mounting plate; 12, swing block; 13, sleeve; 14, connecting spring; 15, adjusting connecting block; 16, bent plate; 17, third electric push rod; 18, second setting rod; 19, rotating block; 20, second connecting spring; 21, second scraper; 22, connecting column; 23, first electric push rod; 24, arc-shaped rod; 25, mounting support; 26, arc-shaped scraper; 27, mounting motor. DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the drawings and specific embodiments.

[0029] Reference Figure 1 A kind of towed pipe dredging robot, it includes: two mounting boxes 1 of relative arrangement, adjusting connecting block 15 is connected between the two mounting boxes 1;Rotating shaft 7 of adjustable length is arranged in the mounting box 1, the two ends of the rotating shaft 7 extend outside the mounting box 1 and form fixed end, the fixed end is fixedly installed with roller 8;Drive motor 3 is arranged in the mounting box 1, the drive motor 3 drives the rotating shaft 7 to rotate;And the connecting column 22 of the one end of the mounting box 1 away from another mounting box 1 is arranged, the connecting column 22 is provided with a plurality of arc-shaped scrapers 26.

[0030] In the application, a preferred embodiment is: in the process of needing to clean the towed pipe, the length of the rotating shaft 7 is adjusted, so that the distance of the roller 8 on both sides and the distance of the towed pipe are adapted, the mounting box 1 is placed in the towed pipe, by starting drive motor 3, so that drive motor 3 drives the rotating shaft 7 to rotate, so that the roller 8 rotates, to drive the mounting box 1 to move along the towed pipe, the arc-shaped scraper 26 is arranged in the towed pipe and is cleaned.

[0031] Further, the power supply 2 is arranged in the installation box 1, and the power supply 2 provides power for the driving motor 3.

[0032] Further, the connecting end of the rotating shaft 7 and the roller 8 is a plum blossom type connection, which is convenient for the matching connection with the roller 8, the protruding limiting ring is arranged on the roller 8, the sleeve ring 9 is installed in the two groups of limiting rings, and the sleeve ring 9 is kept in the rotating relationship with the roller 8 and is limited in the sliding position of the roller 8;

[0033] Further, the end of the connecting column 22 is provided with a plurality of mounting blocks which are arranged at intervals along the outer periphery of the connecting column 22, the mounting column is rotatably provided with a mounting bracket 25, and the mounting bracket 25 is provided with the arc-shaped scraper 26.

[0034] The side of the connecting column 22 is slidably provided with a plurality of arc-shaped rods 24, the end of the arc-shaped rod 24 is arranged in the mounting bracket 25, the arc-shaped rod 24 is slid to rotate the mounting bracket along the sliding direction of the arc-shaped rod 24, so as to open the arc-shaped scraper 26.

[0035] Further, the connecting column 22 is provided with a first electric push rod 23, the first electric push rod 23 drives the arc-shaped rod 24 to slide, preferably, the end of the arc-shaped rod 24 away from the mounting bracket 25 is attached to the surface of the connecting column 22, the arc-shaped rod 24 is rotatably arranged on the mounting bracket 25, in the process of equipment displacement, the first electric push rod 23 on the two groups of installation boxes 1 is started to drive the arc-shaped rod 24 connected thereto to slide, the arc-shaped rod 24 rotatably arranged on one side of the mounting bracket 25 moves towards the sliding direction to drive the mounting bracket 25 to rotate, the arc-shaped rod 24 is pulled to open the plurality of mounting brackets 25, so that the arc-shaped scraper 26 is expanded, the arc-shaped scraper 26 is arranged in a stacked manner, and the arc-shaped scraper 26 is mainly made of PLC or hard rubber material, so that the scraping property is ensured, and the arc-shaped scraper 26 can be attached to the surface wall of the pipe body under the hard lifting of the electric push rod.

[0036] Further, the side of the connecting column 22 is provided with a first electric push rod 23, the first electric push rod 23 drives the arc-shaped rod 24 to slide.

[0037] Further, the installation box 1 is provided with a mounting plate 11 close to one end of another installation box 1, two swing rods are rotatably arranged on the mounting plate 11, a sleeve rod is slidably arranged on the side of the swing rod away from the mounting plate 11, and the end of the sleeve rod is rotatably arranged in the adjusting connecting block 15.

[0038] Further, the mounting plate 11 is fixedly provided with a mounting block, the mounting block is formed with a mounting groove near one side of the adjusting connecting block 15, the mounting groove is rotatably provided with a swing block 12, part of the side of the swing block 12 extends out of the mounting block to form an extension section, the extension section is rotatably provided with a rotating buckle, and the rotating buckle is fixedly provided with the swing rod.

[0039] Further, the connecting spring 14 is arranged between the sleeve 13 and the rotating buckle, and the connecting spring 14 is sleeved on the swing rod.

[0040] Further, in the process of sliding in the pipeline of the traction pipe, when the curvature of the pipeline changes, due to the length of the equipment, the center positions of the two groups of mounting boxes 1 adopt the rotatable and swingable adjusting connecting blocks 15, so that they can adapt to different internal structures of the pipe body, the adjusting connecting block 15 includes two oppositely arranged setting blocks, a connecting shaft is rotatably connected between the two setting blocks, the two mounting blocks are provided with lifting rings on opposite sides, the connecting shaft is rotatably arranged in the lifting rings of the two mounting blocks, the mounting block is formed with a swing groove corresponding to the connecting shaft, the connecting shaft is arranged in the swing groove, in the process of rotating the equipment, the connecting shaft at the center is rotated by changing the force point of the roller 88, the sleeve rods on the two sides are slidably arranged on the swing rod, so that the distance between the sleeve rod and the mounting plate 11 is reduced or increased, so that the overall length of the sleeve 13 and the swing rod changes, with the change of the angle of the mounting box 1, each sleeve 13 and the swing rod swing on the corresponding mounting plate 11, the sleeve 13 is rebounded by the connecting spring 14, so that it can be real-time corrected after the pipe body is straightened.

[0041] Further, the second electric push rod 10 is arranged between the fixed end and the roller 8. The second electric push rod 10 is started, the second electric push rod 10 pushes the roller 8 to move away from or close to the mounting box 1, so that the distance between the roller 8 and the fixed end is adjustable.

[0042] Further, the top of the mounting box 1 is rotatably provided with a turnover block, and the turnover block is provided with a scraper.

[0043] Further, a rotating block 19 is arranged on the top of the installation box 1, the rotating block 19 is arranged on the side of the installation box 1 away from the other installation box 1, the rotating block 19 is T-shaped, the T-shaped rotating block 19 comprises a middle section, the middle section extends out of the installation box 1 to form a middle connecting section, and a setting section is arranged on the middle connecting section, the middle section of the T-shaped rotating block 19 is arranged on the top of the installation box 1, a adjusting block is rotatably arranged on the setting section, a first setting rod is arranged on the top of the adjusting block, the first setting rod is arranged in parallel with the rotating block 19, a first telescopic rod is arranged on the end of the first setting rod, a first connecting spring is arranged on the first telescopic rod, the scraper is arranged on the first telescopic rod, a second setting rod 18 is arranged on the side of the adjusting block away from the middle section, the second setting rod 18, the first setting rod and the adjusting block are connected to form a Z-shaped structure, a second telescopic rod is arranged on the end of the second setting rod, a second connecting spring 20 is arranged on the second telescopic rod, a second scraper 21 is arranged on the second telescopic rod, in use, first rotate the rotating block 19, preferably, the angle of the rotating block 19 can be determined according to the requirements on the site, in this embodiment, the rotating block 19 is rotated to 30 degrees with the installation box 1, then rotate the adjusting block, the adjusting block drives the first setting rod and the second setting rod 18 to rotate, the scrapers on the ends of the first setting rod and the second setting rod 18 and the second scraper 21 rotate and clean the dirt on the top and the bottom of the pipeline, when the scrapers and the second scraper 21 contact the top or the bottom of the pipeline, the first telescopic rod and the second telescopic rod will be retracted, the first connecting spring and the second connecting spring 20 will be compressed and push the scrapers and the second scraper 21 to the inner wall of the pipeline to adapt to the pipes with different inner diameters. Preferably, a motor 27 is arranged on the installation box 1, the motor 27 drives the rotating block 19 to rotate.

[0044] Further, a bending plate 16 is arranged on the installation box 1, the adjusting block extends out of the rotating block 19 to form a rotating part, a third electric push rod 17 is arranged between the bending plate 16 and the rotating part, the adjusting block is rotated by pulling the rotating part. Preferably, the rotating block 19 forms a mounting groove corresponding to the adjusting block, a rotating shaft is arranged in the mounting groove, the adjusting block is rotatably arranged on the rotating shaft.

[0045] Further, the drive motor 3 is connected with a drive gear 5, a driven rack 6 is formed on the rotating shaft 7 corresponding to the drive gear 5, the drive gear 5 and the driven rack 6 are engaged.

[0046] Further, the length of the rotating shaft 7 is determined according to the requirements on the site.

[0047] Further, the installation box 1 is provided with a communication system and a control system, the communication system receives the instructions issued by the user and transmits them to the control system, and the control system controls the various motors in the installation box 1.

[0048] The use process of the dredging robot of the traction pipe is described below.

[0049] In the process of cleaning the traction pipe, the second electric push rod 10 is started to adjust the distance between the two rollers 8, and in the adjusting process, it is adapted to the inner diameter of the traction pipe of different sizes, and in this process, the control system is started by transmitting an electric signal to the control system, and the driving motor 3 is started by the driving motor 3, and preferably, the installation box 1 is also provided with a speed reducer 4, the driving motor 3 and the speed reducer 4 are matched to drive the roller 8 to rotate, and the roller 8 drives the equipment to move in the pipe at a proper length;

[0050] S2: In the process of equipment running, with the change of pipe curvature and position, the two installation boxes 1 change with the change of pipe curvature, position and angle, and the connecting block 15 swings and rotates, and the angle and curvature of the two installation boxes 1 are adjusted by the swing and the rebound force of the spring, so as to adjust the equipment in real time;

[0051] S3: In the process of low roller 8 rolling feedback, the running mode of the equipment is switched, the scraper with spring is attached to the surface wall of the pipe by turning and unfolding, the front side is attached and pulled, the rear side is turned in advance, and the front side is kept parallel to the rear side, so as to drive the equipment to creep and slide;

[0052] S4: In the process of equipment displacement, the cleaning device is started to unfold, so as to slide and unfold in the form of umbrella, the arc-shaped scraper 26 is scraped with the surface of the pipe, and the surface wall of the pipe is cleaned, and the pipe surface wall is cleaned by layering design.

[0053] The above embodiments of the application are described in detail in combination with the drawings, and those skilled in the art can make various changes to the application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the application, and the scope of protection of the application is defined by the appended claims.

Claims

1. A towed tube dewatering robot, characterized in that, The utility model provides a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

2. A towed pipe dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

3. A towed tube dewatering robot according to claim 2, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

4. A towed tube dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

5. A towed tube dewatering robot according to claim 4, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

6. A towed tube dewatering robot according to claim 5, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

7. A towed tube dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

8. A towed tube dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

9. A towed tube dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller.

10. A towed tube dewatering robot according to claim 1, characterized in that: The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with the roller. The utility model discloses a kind of adjustable length of rotation shaft, and the rotation shaft is driven by the drive motor to rotate, and the rotation shaft is provided with the fixed end outside the installation box, and the fixed end is fixedly installed with

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