CN220584066U

CN220584066U - Baby cabbage appearance quality detection grading system

Info

Publication number: CN220584066U
Application number: CN202322186037.5U
Authority: CN
Inventors: 张众昱; 张文军
Original assignee: Ningxia Brothers Modern Agricultural Development Co ltd
Current assignee: Ningxia Brothers Modern Agricultural Development Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-03-12
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses a baby cabbage appearance quality detection grading system, which relates to the technical field of baby cabbage appearance detection and comprises an illumination camera bellows, a rotating shaft, a movable door, an adjusting block, a turnover shaft, a fixed block, a motor, a vertical rod, a sliding cylinder, a supporting rod, an industrial camera, a U-shaped bracket, a movable block, an LED lamp, a damping rotating shaft, a guide post, an adjusting screw and a fixed component. The baby cabbage overturning device has the advantage of being capable of overturning baby cabbage rapidly.

Description

Baby cabbage appearance quality detection grading system

Technical Field

The utility model relates to the technical field of baby cabbage appearance detection, in particular to a baby cabbage appearance quality detection grading system.

Background

Baby cabbage is a brassica cabbage subspecies of Brassicaceae, is introduced from Japan and Korea, has thinner sides, more tender leaves in unit volume, approximately 8-9cm in equatorial diameter and 18-20 cm in height, is slender and sweet in dish shape, is rich in nutrients such as vitamins and trace elements, and is favored by domestic consumers. In recent years, with the increasing demands of the market on baby cabbage, a plurality of varieties such as Beijing chun, beijing chun 99, gao Lijin baby, alpine baby cabbage and the like are cultivated in China, vegetable base parks for building and planting crops such as baby cabbage and the like are started in various places such as Gansu, qianjiang and Wulan, and the like in China, partial varieties of baby cabbage planting is introduced in the Wenzhou area at present, and the planting is mainly concentrated in the first two seasons of spring and winter, so that the development of the domestic baby cabbage consumption market is greatly promoted. In order to provide commercial consumption demands of baby cabbage with different levels, the appearance quality of the baby cabbage needs to be classified and packaged regularly, so that an automatic method for detecting and classifying the appearance quality index of the baby cabbage is needed.

However, the prior art has the following defects in the using process: because the appearance quality of baby cabbage detects the appearance to the equal appearance detection of a week of baby cabbage, traditional baby cabbage appearance detection grading system is after detecting the one side of baby cabbage, need overturn other faces through the manual work with the baby cabbage, need open the dodge gate on the illumination camera bellows earlier before the upset, just can overturn the baby cabbage, still need close the dodge gate on the illumination camera bellows after the upset is accomplished, comparatively waste time.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a baby cabbage appearance quality detection grading system so as to solve the problems in the prior art. The baby cabbage overturning device has the advantage of being capable of overturning baby cabbage rapidly.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a baby cabbage outward appearance quality detection grading system, includes illumination camera bellows, rotation axis, dodge gate, regulating block, trip shaft, fixed block, motor, vertical pole, slide, bracing piece, industry camera, U-shaped support, dodge block, LED lamp, damping pivot, guide post, adjusting screw and fixed subassembly, the one end opening of illumination camera bellows, the opening part of illumination camera bellows passes through rotation axis and the one end swing joint of dodge gate, the dodge gate corresponds the cooperation with illumination camera bellows, the interior bottom of illumination camera bellows is provided with the fixed block, the side level of fixed block runs through and is provided with adjusting screw, and adjusting screw passes through the bearing and is connected with the fixed block rotation, be provided with two sections opposite rotation lines on the adjusting screw, and adjusting screw and two corresponding complex regulating block screw thread fit, the side level of fixed block is provided with the guide post that runs through the regulating block, the upper end of the regulating block is horizontally movably provided with a turnover shaft, the end side of one regulating block is horizontally provided with a motor, the output shaft of the motor is fixedly connected with the end part of one turnover shaft through a speed reducer, the bottom in the illumination camera bellows is provided with a vertical rod, the upper end of the vertical rod is movably provided with a sliding cylinder, the side surface of the sliding cylinder is horizontally provided with a U-shaped bracket, the two ends of the lower surface of the U-shaped bracket are movably connected with the upper end of the movable block through a damping rotating shaft, the lower end of the movable block is provided with an LED lamp, the inner side of the U-shaped bracket is fixedly connected with one end of a supporting rod, the other end of the supporting rod is vertically provided with an industrial camera, the side surface of the sliding cylinder is provided with a fixed component, the industrial camera is connected with an external computer, when the appearance of baby vegetables is required to be detected, the movable door is rotated around the rotating shaft, until the opening of the illumination camera bellows is completely opened, when the external diameter of the baby cabbage is smaller, the adjusting screw is rotated forward, as the adjusting screw is in threaded fit with the two adjusting blocks through the rotary threads, the adjusting screw drives the two adjusting blocks to move in opposite directions along the guide post, the two adjusting blocks drive the turning shafts to move in opposite directions until the distance between the two turning shafts is smaller than the external diameter of the baby cabbage, the baby cabbage is placed on the two turning shafts, the movable block rotates around the damping rotating shaft, the movable block drives the LED lamp to rotate until the LED lamp is adjusted to a proper irradiation angle, the industrial camera shoots the front face of the baby cabbage, the shot picture is transmitted to the computer, a detection program operated by the computer can detect and analyze the front face of the baby cabbage, the motor works, the power of motor output carries the pivot of turning over after the reduction gear speed reduction, the pivot of turning over drives baby's dish upset, thereby other faces of baby's dish are overturn, thereby carry out outward appearance quality detection to other faces of baby's dish, after whole baby's dish's a week is whole to be detected, obtain the outward appearance quality grade of current baby's dish by the procedure of computer, thereby carry out the classification to baby's dish, when industry camera is far away from baby's dish, loosen fixed subassembly, make the slide tube can slide downwards along vertical pole, the slide tube drives U-shaped support and moves downwards, the U-shaped support passes through the bracing piece and drives industry camera downwardly moving, until with industry camera to suitable height, the illumination camera bellows can avoid external light to enter inside, avoid external light to produce the influence to the outward appearance detection of inside baby's dish.

Further, the vertical activity in side of a slide is provided with T shape slide, the side level of a slide is provided with the traveller that runs through T shape slide, the outer end of traveller is provided with the fixed plate, the outside movable sleeve of traveller is equipped with the spring, and the spring is in between T shape slide and the fixed plate, one side level that the T shape slide is close to a slide is provided with the spliced pole, set up on the slide with the spliced pole corresponding complex through-hole, one side level that the T shape slide kept away from the slide is provided with the traveller, a plurality of and spliced pole corresponding complex regulation hole have evenly been seted up to the side equidistance of vertical pole, when needs to highly down adjust to the industry camera, the pulling traveller overcomes the spring effort, and the traveller drives T shape slide along the traveller and compresses the spring, and T shape slide drives the spliced pole and remove, makes the traveller along vertical pole downwardly sliding down, and the traveller drives U shape support downwardly moving, U shape support passes through the bracing piece and moves down the industry camera until with industry camera, with industry camera height is adjusted to the appropriate, and the spring is released to the fixed in the telescopic link down.

Further, the outer end of the pull column is provided with a bending extension rod which bends and extends towards the opening of the illumination camera bellows, and the bending extension rod plays a role in conveniently pulling the pull column.

Further, the outer end of the adjusting screw is provided with a hand wheel, and the hand wheel increases the rotation radius of the adjusting screw, so that the adjusting screw is easier and more labor-saving in rotation.

Further, anti-skid patterns are uniformly arranged on the turnover shaft connected to the output shaft of the motor at equal angles, and the anti-skid patterns can increase the friction force with the baby cabbage.

Further, the upper end of the adjusting block is movably connected with the overturning shaft through a supporting lug, and the supporting lug plays a role in supporting the overturning shaft.

Further, the regulating block is fixedly connected with the motor through a motor supporting plate, and the motor supporting plate plays a role in supporting the motor.

Further, one end of the movable door far away from the rotating shaft is provided with a lock catch correspondingly matched with the illumination camera bellows, and the lock catch plays a role in locking the movable door.

Further, the lower end of the U-shaped support is movably provided with a damping rotating shaft through a supporting block, and the supporting block plays a role in supporting the damping rotating shaft.

Based on the technical scheme, the baby cabbage appearance quality detection grading system has the following beneficial effects obtained through practical application:

1. according to the utility model, the motor is matched with the turnover shaft, so that after the current shooting of the baby cabbage by the industrial camera is finished, the power is output through the output shaft of the motor, the rotation speed of the speed reducer is reduced, the speed reducer is transmitted to the turnover shaft, and the turnover shaft drives the baby cabbage to turn over, so that the baby cabbage turns over to other surfaces, the turnover speed is high, the baby cabbage can be quickly turned over without opening a movable door on an illumination camera, and the time is saved.

2. According to the utility model, the adjusting blocks are matched with the adjusting screw rods, so that the two adjusting blocks can be driven to move in opposite directions or in opposite directions by positively and negatively rotating the adjusting screw rods according to the outer diameters of the baby vegetables, the adjusting blocks drive the turning shafts to move in opposite directions or in opposite directions, the turning shafts can support the baby vegetables with different outer diameters, and therefore, the baby vegetables with different outer diameters can be driven to turn, and the applicability is improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a right-side perspective view of the present utility model.

Fig. 3 is a schematic perspective view of the front view of the utility model with the top of the illumination camera bellows removed.

Fig. 4 is a schematic view of a partial enlarged structure at a in fig. 3 according to the present utility model.

Fig. 5 is a schematic rear view of the utility model with the top of the illumination camera pod removed.

Fig. 6 is a schematic view of a partially enlarged structure at B in fig. 5 according to the present utility model.

Fig. 7 is a schematic top perspective view of the baby cabbage turning assembly of the present utility model.

Fig. 8 is a schematic bottom perspective view of the baby cabbage turning assembly of the present utility model.

In the figure: 1 illumination camera bellows, 2 rotation axis, 3 dodge gates, 4 hasp, 5 supporting lugs, 6 regulating blocks, 7 tilting shafts, 8 fixed blocks, 9 handwheels, 10 motor support plates, 11 motors, 12 vertical rods, 13 sliding drums, 14 support rods, 15 industrial cameras, 16 inserting columns, 17 pulling columns, 18 bending extension rods, 19U-shaped brackets, 20 movable blocks, 21LED lamps, 22 supporting blocks, 23 damping rotation shafts, 24 anti-skid patterns, 25 regulating holes, 26 through holes, 27 sliding columns, 28T-shaped sliding plates, 29 springs, 30 fixed plates, 31 guide columns and 32 regulating screws.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-8, the present embodiment provides a technical solution: the utility model provides a baby cabbage appearance quality detection grading system, which comprises an illumination camera bellows 1, a rotating shaft 2, a movable door 3, an adjusting block 6, a turnover shaft 7, a fixed block 8, a motor 11, a vertical rod 12, a slide cylinder 13, a supporting rod 14, an industrial camera 15, a U-shaped bracket 19, a movable block 20, an LED lamp 21, a damping rotating shaft 23, a guide post 31, an adjusting screw 32 and a fixed component, wherein one end opening of the illumination camera bellows 1, the opening of the illumination camera bellows 1 is movably connected with one end of the movable door 3 through the rotating shaft 2, the movable door 3 is correspondingly matched with the illumination camera bellows 1, the fixed block 8 is arranged at the inner bottom of the illumination camera bellows 1, the adjusting screw 32 is horizontally arranged on the side surface of the fixed block 8 in a penetrating way, the adjusting screw 32 is rotatably connected with the fixed block 8 through a bearing, two sections of opposite rotating lines are arranged on the adjusting screw 32, the adjusting screw 32 is in threaded fit with the two correspondingly matched adjusting blocks 6, the side surface of the fixed block 8 is horizontally provided with a guide post 31 penetrating through the adjusting block 6, the upper end of the adjusting block 6 is horizontally movably provided with a turnover shaft 7, the end side of one of the adjusting blocks 6 is horizontally provided with a motor 11, an output shaft of the motor 11 is fixedly connected with the end part of one of the turnover shafts 7 through a speed reducer, a vertical rod 12 is arranged in the illumination dark box 1, the upper end of the vertical rod 12 is movably provided with a sliding cylinder 13, the side surface of the sliding cylinder 13 is horizontally provided with a U-shaped bracket 19, the two ends of the lower surface of the U-shaped bracket 19 are movably connected with the upper end of the movable block 20 through a damping rotating shaft 23, the lower end of the movable block 20 is provided with an LED lamp 21, the inner side of the U-shaped bracket 19 is fixedly connected with one end of a supporting rod 14, the other end of the supporting rod 14 is vertically provided with an industrial camera 15, the side surface of the sliding cylinder 13 is provided with a fixing component, the industrial camera 15 is connected with an external computer, when the appearance of the baby cabbage is required to be detected, the movable door 3 is rotated around the rotating shaft 2 until the opening of the illumination camera bellows 1 is completely opened, when the external diameter of the baby cabbage is smaller, the adjusting screw 32 is rotated forward, the adjusting screw 32 is matched with the two adjusting blocks 6 through the rotating threads, the adjusting screw 32 drives the two adjusting blocks 6 to move along the guide posts 31 in opposite directions, the two adjusting blocks 6 drive the turning shafts 7 to move in opposite directions until the distance between the two turning shafts 7 is smaller than the external diameter of the baby cabbage, the baby cabbage is placed on the two turning shafts 7, the movable block 20 is rotated around the damping rotating shaft 23, the movable block 20 drives the LED lamp 21 to rotate until the LED lamp 21 is adjusted to a proper irradiation angle, the industrial camera 15 shoots the front of the baby cabbage and transmits the shot picture to a computer, the detection program operated by the computer can detect and analyze the front surface of the baby cabbage, the motor 11 works, the power output by the motor 11 is transmitted to the turnover shaft 7 after being decelerated by the decelerator, the turnover shaft 7 drives the baby cabbage to turn over, so that the baby cabbage turns over to other surfaces, the appearance quality detection is carried out on the other surfaces of the baby cabbage, after the whole circle of the baby cabbage is completely detected, the appearance quality grade of the current baby cabbage is obtained by the program of the computer, the baby cabbage is classified, when the industrial camera 15 is far away from the baby cabbage, the fixing component is loosened, the sliding cylinder 13 can slide downwards along the vertical rod 12, the sliding cylinder 13 drives the U-shaped bracket 19 to move downwards, the U-shaped bracket 19 drives the industrial camera 15 to move downwards through the supporting rod 14 until the industrial camera 15 is regulated to a proper height, the illumination camera 1 can prevent external light from entering the interior, the influence of external light on the appearance detection of the internal baby cabbage is avoided.

Further, a T-shaped sliding plate 28 is vertically and movably arranged on the side surface of the sliding cylinder 13, a sliding column 27 penetrating through the T-shaped sliding plate 28 is horizontally arranged on the side surface of the sliding cylinder 13, a fixed plate 30 is arranged at the outer end of the sliding column 27, a spring 29 is movably sleeved on the outer side of the sliding column 27, the spring 29 is positioned between the T-shaped sliding plate 28 and the fixed plate 30, a plug column 16 is horizontally arranged on one side of the T-shaped sliding plate 28 close to the sliding cylinder 13, a through hole 26 correspondingly matched with the plug column 16 is formed in the sliding cylinder 13, a pull column 17 is horizontally arranged on one side of the T-shaped sliding plate 28 far away from the sliding cylinder 13, a plurality of adjusting holes 25 correspondingly matched with the plug column 16 are uniformly formed in the side surface of the vertical rod 12 at equal intervals, when the height of the industrial camera 15 needs to be adjusted downwards, the pull column 17 is pulled, the acting force of the spring 29 is overcome, the pull column 17 drives the T-shaped sliding plate 28 to slide along the sliding column 27, the T-shaped sliding plate 28 compresses the spring 29, the T-shaped sliding plate 28 drives the inserting column 16 to move, until the inserting column 16 is separated from the adjusting hole 25, the sliding cylinder 13 slides downwards along the vertical rod 12, the sliding cylinder 13 drives the U-shaped bracket 19 to move downwards, the U-shaped bracket 19 drives the industrial camera 15 to move downwards through the supporting rod 14, the pull column 17 is loosened until the industrial camera 15 is adjusted to a proper height, and the T-shaped sliding plate 28 drives the inserting column 16 to reenter the adjusting hole 25 to be fixed under the elastic force of the spring 29; the outer end of the pull column 17 is provided with a bending extension rod 18 which bends and extends towards the opening of the illumination camera bellows 1, and the bending extension rod 18 plays a role in conveniently pulling the pull column 17.

Further, the outer end of the adjusting screw 32 is provided with the hand wheel 9, and the hand wheel 9 increases the rotation radius of the adjusting screw 32, so that the rotation is easier and more labor-saving; the anti-skid patterns 24 are uniformly arranged on the turnover shaft 7 connected to the output shaft of the motor 11 at equal angles, and the friction force between the anti-skid patterns 24 and the baby cabbage can be increased.

Further, the upper end of the adjusting block 6 is movably connected with the turnover shaft 7 through the supporting lug 5, and the supporting lug 5 plays a role in supporting the turnover shaft 7; the adjusting block 6 is fixedly connected with the motor 11 through a motor supporting plate 10, and the motor supporting plate 10 plays a role in supporting the motor 11; one end of the movable door 3 far away from the rotating shaft 2 is provided with a lock catch 4 correspondingly matched with the illumination camera bellows 1, and the lock catch 4 plays a role in locking the movable door 3; the lower extreme of U-shaped support 19 is provided with damping pivot 23 through supporting shoe 22 activity, and supporting shoe 22 plays the effect of supporting damping pivot 23.

The utility model provides a baby cabbage appearance quality detection grading system, which has the following working principle: when the appearance of the baby cabbage is required to be detected, the movable door 3 is rotated around the rotating shaft 2 until the opening of the illumination camera bellows 1 is completely opened, when the external diameter of the baby cabbage is smaller, the adjusting screw 32 is rotated forward, the adjusting screw 32 is matched with the two adjusting blocks 6 through the rotating threads, the adjusting screw 32 drives the two adjusting blocks 6 to move along the guide posts 31 in opposite directions, the two adjusting blocks 6 drive the turning shafts 7 to move in opposite directions until the distance between the two turning shafts 7 is smaller than the external diameter of the baby cabbage, the baby cabbage is placed on the two turning shafts 7, the movable block 20 is rotated around the damping rotating shaft 23, the movable block 20 drives the LED lamp 21 to rotate until the LED lamp 21 is adjusted to a proper irradiation angle, the industrial camera 15 shoots the front face of the baby cabbage, the shot picture is transmitted to a computer, a detection program operated by the computer can detect and analyze the front face of the baby cabbage, when the motor 11 works, the power output by the motor 11 is transmitted to the turnover shaft 7 after being decelerated by the decelerator, the turnover shaft 7 drives the baby cabbage to turn over, so that the baby cabbage turns over to other surfaces, the appearance quality of the other surfaces of the baby cabbage is detected, after the whole circle of the baby cabbage is detected completely, the appearance quality grade of the current baby cabbage is obtained by a program of a computer, the baby cabbage is classified, when the industrial camera 15 is far away from the baby cabbage, the pull column 17 is pulled by the bending extension rod 18, the acting force of the spring 29 is overcome, the pull column 17 drives the T-shaped sliding plate 28 to slide along the sliding column 27, the T-shaped sliding plate 28 compresses the spring 29, the T-shaped sliding plate 28 drives the inserting column 16 to move until the inserting column 16 is separated from the adjusting hole 25, the sliding cylinder 13 slides downwards along the vertical rod 12, the sliding cylinder 13 drives the U-shaped bracket 19 to move downwards, the U-shaped bracket 19 drives the industrial camera 15 to move downwards through the supporting rod 14 until the industrial camera 15 is adjusted to a proper height, the pull column 17 is loosened, and the T-shaped sliding plate 28 drives the inserting column 16 to reenter the adjusting hole 25 for fixing under the elastic force of the spring 29, so that the height of the industrial camera 15 is adjusted.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a baby cabbage outward appearance quality detects grading system which characterized in that: including illumination camera bellows (1), rotation axis (2), dodge gate (3), regulating block (6), tilting axis (7), fixed block (8), motor (11), vertical pole (12), slide (13), bracing piece (14), industry camera (15), U-shaped support (19), movable block (20), LED lamp (21), damping pivot (23), guide post (31), adjusting screw (32) and fixed subassembly, the one end opening of illumination camera bellows (1), the opening part of illumination camera bellows (1) is through the one end swing joint of rotation axis (2) and dodge gate (3), movable gate (3) correspond the cooperation with illumination camera bellows (1), the interior bottom of illumination camera bellows (1) is provided with fixed block (8), the side level of fixed block (8) runs through and is provided with adjusting screw (32), and adjusting screw (32) are connected with fixed block (8) rotation through the bearing, be provided with two sections opposite direction rotation lines on adjusting screw (32), and adjusting screw (32) and two one end swing joint of corresponding regulating block (6), guide post (31) are run through to the side of fixed block (8), the upper end of the adjusting block (6) is horizontally movably provided with a turnover shaft (7), the end side of one of the adjusting blocks (6) is horizontally provided with a motor (11), an output shaft of the motor (11) is fixedly connected with the end part of one of the turnover shafts (7) through a speed reducer, a vertical rod (12) is arranged at the inner bottom of the illumination camera bellows (1), the upper end of the vertical rod (12) is movably provided with a sliding cylinder (13), the side surface of the sliding cylinder (13) is horizontally provided with a U-shaped bracket (19), the lower surface both ends of U-shaped support (19) are through damping pivot (23) and the upper end swing joint of movable block (20), the lower extreme of movable block (20) is provided with LED lamp (21), the inboard of U-shaped support (19) and the one end fixed connection of bracing piece (14), the other end of bracing piece (14) is vertical to be provided with industrial camera (15), the side of slide (13) is provided with fixed subassembly.

2. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: the vertical activity in side of slide (13) is provided with T shape slide (28), the side level of slide (13) is provided with slide (27) that runs through T shape slide (28), the outer end of slide (27) is provided with fixed plate (30), the outside movable sleeve of slide (27) is equipped with spring (29), and spring (29) are in between T shape slide (28) and fixed plate (30), one side level that is close to slide (13) of T shape slide (28) is provided with spliced pole (16), offered on slide (13) with spliced pole (16) corresponding complex through-hole (26), one side level that slide (28) were kept away from slide (13) is provided with pull column (17), a plurality of and spliced pole (16) corresponding complex regulation hole (25) are evenly offered to the side equidistance of vertical pole (12).

3. The system for detecting and grading the appearance quality of baby cabbage according to claim 2, wherein: the outer end of the pull column (17) is provided with a bending extension rod (18) which bends and extends towards the opening of the illumination camera bellows (1).

4. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: the outer end of the adjusting screw (32) is provided with a hand wheel (9).

5. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: anti-skid patterns (24) are uniformly arranged on the turnover shaft (7) connected to the output shaft of the motor (11) at equal angles.

6. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: the upper end of the adjusting block (6) is movably connected with the overturning shaft (7) through the supporting lug (5).

7. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: the adjusting block (6) is fixedly connected with the motor (11) through a motor supporting plate (10).

8. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: one end of the movable door (3) far away from the rotating shaft (2) is provided with a lock catch (4) correspondingly matched with the illumination camera bellows (1).

9. The system for detecting and grading the appearance quality of baby cabbage according to claim 1, wherein: the lower end of the U-shaped bracket (19) is movably provided with a damping rotating shaft (23) through a supporting block (22).