Integrated breeding method for sturgeons and rainbow trout

Abstract

The invention discloses a sturgeon and rainbow trout integrated culture method, and belongs to the technical field of fish culture, and the method comprises the following steps: S1, equipment place preparation; s2, fry selection and stocking; s3, feeding management: selecting corresponding foodstuffs of sturgeons and rainbow trout, putting the foodstuffs into the sturgeon and rainbow trout feeding device, and regularly feeding the sturgeons and rainbow trout through the sturgeon and rainbow trout feeding device; s4, fishing and selling; the sturgeon and rainbow trout feeding device comprises a mounting frame mounted between the sturgeon culture pond and the rainbow trout culture pond. According to the invention, the mounting rack is mounted between the sturgeon culture pond and the rainbow trout culture pond, and the incomplete bevel gear is located at the position engaged with the two groups of bevel gears; according to the automatic feeding device for sturgeons and rainbow trout, when a worker feeds sturgeons and rainbow trout in the sturgeon culture pond and the rainbow trout culture pond, the double-head servo motor is only needed to be started, the conveying roller can correspondingly rotate to complete the feeding task, operation is more convenient and faster, and the workload of the worker is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of fish breeding, and in particular relates to an integrated breeding method for sturgeons and rainbow trout. Background Art

[0002] Fish farming is an important part of the aquaculture industry. With the continuous progress of society and the continuous improvement of people's living standards, the market demand for fish and the pursuit of diversified species in the catering industry are also increasing. Therefore, fish farming is becoming more and more centralized to ensure market supply. At the same time, the types of farmed fish are becoming more and more diversified, such as sturgeon, rainbow trout, etc.

[0003] When currently breeding sturgeons and rainbow trout, some of them are cultured in breeding ponds. At the same time, in order to ensure the growth of sturgeons and rainbow trout, the fish are generally fed small meals frequently. Therefore, staff members need to perform feeding tasks frequently. In addition, since there are certain differences in the high-quality feed of sturgeons and rainbow trout, and since sturgeons and rainbow trout have different habits, there will be food snatching when they are placed in the same breeding pond for breeding. Therefore, every time they are fed, staff members need to throw feed into the breeding ponds of sturgeons and rainbow trout respectively, which greatly increases the workload of staff members. Summary of the invention

[0004] In order to overcome the above defects, the present invention provides a method for integrated breeding of sturgeons and rainbow trout, which solves the problem of excessive feeding workload for workers in the existing integrated breeding of sturgeons and rainbow trout.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for integrated breeding of sturgeon and rainbow trout, comprising the following steps:

[0006] S1. Equipment site preparation: select a sunny and well-ventilated place to install sturgeon breeding ponds and rainbow trout breeding ponds as well as sturgeon and rainbow trout feeding devices, lay water supply and drainage pipes for sturgeon breeding ponds and rainbow trout breeding ponds, and disinfect the sturgeon breeding ponds and rainbow trout breeding ponds in advance, and then introduce water that meets the water quality standards into the sturgeon breeding ponds and rainbow trout breeding ponds;

[0007] S2. Select and stock fish fry: select healthy and vigorous sturgeon and rainbow trout fry for disinfection, and then place them into corresponding sturgeon breeding ponds and rainbow trout breeding ponds for breeding;

[0008] S3, feeding management, selecting corresponding food for sturgeon and rainbow trout and putting it into the feeding device for sturgeon and rainbow trout, feeding them regularly through the feeding device for sturgeon and rainbow trout, and adjusting the feeding frequency in a targeted manner according to the growth of sturgeon and rainbow trout and weather changes, and checking the growth of sturgeon and rainbow trout regularly to prevent and control diseases;

[0009] S4. Fishing and sales: select time periods for fishing and sales based on the growth of sturgeons and rainbow trout and market conditions;

[0010] The sturgeon and rainbow trout feeding device comprises a mounting frame installed between the sturgeon breeding pond and the rainbow trout breeding pond, a slide groove is provided at the middle position of the bottom of the mounting frame, and a slider is provided inside the slide groove, a movable mounting bin is installed at the bottom of the slider, and connecting support rods are installed on both sides of the movable mounting bin, and a food storage bin is installed at one end of the connecting support rod away from the movable mounting bin;

[0011] The bottom of both sides of the food storage bin are provided with inclined discharge holes, a feeding roller is passed through the bottom of one end of the food storage bin, and a material storage groove is reserved at the top of the outer wall of the feeding roller;

[0012] A mounting shaft is installed at one end of the feed roller close to the food storage bin, and the mounting shaft passes through the food storage bin, two sets of bevel gears are installed on the outer side of the mounting shaft away from the end of the feed roller, racks are installed on both sides of the bottom of the mounting frame, and a driving mechanism for driving its own movement is provided in the movable mounting bin, and the driving mechanism is used to drive the feed roller to rotate.

[0013] As a further solution of the present invention: the cross-sectional shape of the slider is "T"-shaped, and the slider and the slide groove form a relative sliding mechanism.

[0014] As a further solution of the present invention: the transverse central axis of the connecting support rod is parallel to the transverse central axis of the movable installation bin, and the connecting support rod and the movable installation bin are made in one piece.

[0015] As a further solution of the present invention: a support frame is installed at the bottom of the food storage bin away from the connecting support rod, and a support roller is installed at the bottom of the support frame.

[0016] As a further solution of the present invention: the driving mechanism includes a double-headed servo motor, which is installed at the bottom of the movable mounting chamber, the output ends on both sides of the double-headed servo motor are connected to output shafts, and the output shafts pass through the movable mounting chamber, the output shaft is installed with a gear body at one end close to the double-headed servo motor, and the output shaft is installed with incomplete bevel gears at one end away from the double-headed servo motor.

[0017] As a further solution of the present invention: the central axis of the gear body is parallel to the transverse central axis of the rack, and the gear body and the rack are meshingly connected.

[0018] As a further solution of the present invention: the incomplete bevel teeth are perpendicular to the two groups of bevel gears, and the incomplete bevel teeth are located at a position meshing with the two groups of bevel gears.

[0019] As a further solution of the present invention: a fixing plate is installed at one end of the feed roller away from the mounting shaft, a threaded rod passes through one end of the fixing plate, a movable adjustment block is provided at one end of the threaded rod close to the feed roller, and the movable adjustment block extends to the interior of the material trough.

[0020] As a further solution of the present invention: the threaded rod is rotationally connected to the movable adjustment block, and the threaded rod is threadedly connected to the fixed plate.

[0021] As a further solution of the present invention: the top of the movable adjustment block is arc-shaped, and the movable adjustment block and the material containing trough form a relative sliding structure.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By installing the mounting frame between the sturgeon breeding pond and the rainbow trout breeding pond, and the incomplete bevel gear is located at the position meshing with the two sets of bevel gears, when feeding the sturgeons and rainbow trout in the sturgeon breeding pond and the rainbow trout breeding pond, the staff only needs to turn on the double-headed servo motor to make the feed roller rotate accordingly to complete the feeding task, which makes the operation more convenient and quick, and greatly reduces the workload of the staff.

[0024] 2. Through the meshing connection between the gear body and the rack, when the double-head servo motor drives the gear body to rotate, the movable installation bin can drive the food storage bin to move longitudinally, so that the food dropped from the food storage bin can be more evenly distributed in the sturgeon breeding pond and the rainbow trout breeding pond, avoiding excessive crowding of fish to grab food, etc.

[0025] 3. By opening two groups of inclined discharge holes on the food storage bin, the feed roller can intermittently discharge the food in different directions when it reciprocates, so that the food can be further evenly distributed when it falls.

[0026] 4. Through the meshing connection between the gear body and the rack, the output shaft of the movable mounting bin always rotates a fixed number of circles when completing a stroke, so the number of times the material trough on the feed roller discharges material downward is also fixed, so that automatic quantitative feeding can be achieved during each feeding.

[0027] 5. The feed roller is provided with a fixed plate, a threaded rod and a movable adjustment block, so that the staff can adjust the amplitude of the feed entering the feed trough by rotating the threaded rod to drive the movable adjustment block, thereby changing the amount of material discharged from the feed trough each time, so as to facilitate the staff to adjust the feeding amount according to the different types of sturgeons and rainbow trout and the different growth stages before feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the main cross-sectional structure of the present invention;

[0030] Figure 3 The present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0031] Figure 4 It is a schematic diagram of the main cross-sectional structure of the food storage bin of the present invention;

[0032] Figure 5 The present invention Figure 5 A schematic diagram of the enlarged structure at B;

[0033] Figure 6 It is a side structural schematic diagram of the present invention;

[0034] Figure 7 The present invention Figure 6 A schematic diagram of the enlarged structure at C;

[0035] Figure 8 It is a side structural schematic diagram of the feed roller of the present invention.

[0036] In the figure: 1. sturgeon breeding pond; 2. rainbow trout breeding pond; 3. mounting frame; 4. slideway; 5. slide block; 6. movable mounting bin; 7. connecting support rod; 8. food storage bin; 9. supporting frame; 10. supporting roller; 11. inclined discharge hole; 12. feed roller; 13. material trough; 14. mounting shaft; 15. bevel gear; 16. rack; 17. double-headed servo motor; 18. output shaft; 19. gear body; 20. incomplete bevel gear; 21. fixing plate; 22. threaded rod; 23. movable adjustment block. DETAILED DESCRIPTION

[0037] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0038] like Figure 1-Figure 8 As shown, the present invention provides a technical solution:

[0039] Example 1

[0040] A sturgeon and rainbow trout integrated breeding method comprises the following steps:

[0041] S1. Equipment site preparation: select a sunny and well-ventilated place to install sturgeon breeding pond 1 and rainbow trout breeding pond 2 as well as sturgeon and rainbow trout feeding devices, lay water supply and drainage pipes for sturgeon breeding pond 1 and rainbow trout breeding pond 2, and perform preliminary disinfection on sturgeon breeding pond 1 and rainbow trout breeding pond 2, and then introduce water that meets the water quality standards into sturgeon breeding pond 1 and rainbow trout breeding pond 2;

[0042] S2, fry selection and stocking, select healthy and energetic sturgeon and rainbow trout fry for disinfection, and then put them into the corresponding sturgeon breeding pond 1 and rainbow trout breeding pond 2 for breeding;

[0043] S3, feeding management, selecting corresponding food for sturgeon and rainbow trout and putting it into the feeding device for sturgeon and rainbow trout, feeding them regularly through the feeding device for sturgeon and rainbow trout, and adjusting the feeding frequency in a targeted manner according to the growth of sturgeon and rainbow trout and weather changes, and checking the growth of sturgeon and rainbow trout regularly to prevent and control diseases;

[0044] S4. Fishing and sales: select time periods for fishing and sales based on the growth of sturgeons and rainbow trout and market conditions;

[0045] The sturgeon and rainbow trout feeding device comprises a mounting frame 3 installed between the sturgeon breeding pond 1 and the rainbow trout breeding pond 2. The sturgeon breeding pond 1 and the rainbow trout breeding pond 2 can be of the same type as existing similar breeding equipment, and are equipped with functions such as oxygenation, water purification and replacement, which will not be repeated here. At the same time, the sturgeon breeding pond 1 and the rainbow trout breeding pond 2 can also be existing dug ponds equipped with functions such as oxygenation, water purification and replacement, and when in use, the mounting frame 3 can also be installed on the embankment slope between the sturgeon breeding pond 1 and the rainbow trout breeding pond 2, which is not limited here;

[0046] A slide groove 4 is provided at the middle position of the bottom of the mounting frame 3, and a slider 5 is provided inside the slide groove 4. A movable mounting bin 6 is installed at the bottom of the slider 5, and connecting support rods 7 are installed on both sides of the movable mounting bin 6. A food storage bin 8 is installed at one end of the connecting support rod 7 away from the movable mounting bin 6. The cross-sectional shape of the slider 5 is "T"-shaped, and the slider 5 and the slide groove 4 form a relative sliding mechanism, so that under the action of a corresponding external force, the slider 5 can slide in the slide groove 4, so that the food storage bin 8 moves horizontally and longitudinally, so that the food storage bin 8 can make the food more evenly distributed in the sturgeon breeding pond 1 and the rainbow trout breeding pond 2 when discharging and feeding;

[0047] The transverse central axis of the connecting support rod 7 is parallel to the transverse central axis of the movable installation bin 6, and the connecting support rod 7 and the movable installation bin 6 are made in one piece, so as to ensure the supporting effect of the connecting support rod 7 on the food storage bin 8 during use, and the connection strength between the connecting support rod 7 and the movable installation bin 6;

[0048] A support frame 9 is installed at the bottom of the food storage bin 8 away from the connecting support rod 7, and a support roller 10 is installed at the bottom of the support frame 9. The support frame 9 and the support roller 10 can cooperate to support the food storage bin 8, thereby making the support of the food storage bin 8 more comprehensive. The outer side of the support roller 10 can be made of rubber material to ensure its wear resistance.

[0049] The bottom of both sides of the food storage bin 8 are provided with inclined discharge holes 11, and a feed roller 12 is passed through the bottom of one end of the food storage bin 8, and a material storage groove 13 is reserved at the top of the outer wall of the feed roller 12. The feed roller 12 can rotate on the food storage bin 8, so that when the feed roller 12 reciprocates, the material storage groove 13 faces upward, and the food in the food storage bin 8 can be filled therein, and the material storage groove 13 faces downward, and the food in the material storage groove 13 can be discharged through one of the two groups of inclined discharge holes 11, and the reciprocating rotation of the feed roller 12 can make the food intermittently discharged from one of the two groups of inclined discharge holes 11, so that the lateral distribution during discharge can be more uniform;

[0050] The end of the feed roller 12 close to the food storage bin 8 is equipped with a mounting shaft 14, and the mounting shaft 14 penetrates the food storage bin 8. Two sets of bevel gears 15 are installed on the outer side of the mounting shaft 14 away from the end of the feed roller 12. Racks 16 are installed on both sides of the bottom of the mounting frame 3. A driving mechanism for driving its own movement is provided in the movable mounting bin 6, and the driving mechanism is used to drive the feed roller 12 to rotate. The driving mechanism includes a double-headed servo motor 17, which is installed at the bottom of the movable mounting bin 6. The output ends on both sides of the double-headed servo motor 17 are connected There is an output shaft 18, and the output shaft 18 passes through the movable installation bin 6. A gear body 19 is installed at one end of the output shaft 18 close to the double-headed servo motor 17, and an incomplete bevel gear 20 is installed at one end of the output shaft 18 away from the double-headed servo motor 17. The central axis of the gear body 19 is parallel to the transverse central axis of the rack 16, and the gear body 19 and the rack 16 are meshingly connected, so that when the double-headed servo motor 17 drives the output shaft 18 to rotate, the movable installation bin 6 can move accordingly, so that the food storage bin 8 can complete the above-mentioned horizontal and longitudinal movement tasks;

[0051] The incomplete bevel gear 20 is perpendicular to the two sets of bevel gears 15, and the incomplete bevel gear 20 is located at a position meshing with the two sets of bevel gears 15, so that when the double-headed servo motor 17 drives the output shaft 18 to rotate, the half-circle gear block on the incomplete bevel gear 20 will intermittently mesh with one of the two sets of bevel gears 15, and when the incomplete bevel gear 20 meshes with the two sets of bevel gears 15, the mounting shaft 14 will rotate in different directions, so that the mounting shaft 14 can drive the feed roller 12 to complete the above-mentioned reciprocating rotation task;

[0052] When explanation is needed,

[0053] When the movable mounting bin 6 moves a stroke of the same length as the rack 16, the number of rotations of the output shaft 18 remains constant, so the number of reciprocating rotations of the feed roller 12 during the process also remains constant, so that the number of downward discharges of the feed trough 13 on the feed roller 12 also remains constant, so that when the movable mounting bin 6 moves a stroke, the amount of food discharged is fixed, thereby completing the quantitative feeding task.

[0054] Example 2

[0055] Based on the above-mentioned embodiment 1, a fixing plate 21 is installed at one end of the feed roller 12 away from the mounting shaft 14, a threaded rod 22 is passed through one end of the fixing plate 21, and a movable adjustment block 23 is arranged at one end of the threaded rod 22 close to the feed roller 12, and the movable adjustment block 23 extends to the inside of the material receiving groove 13, the top of the movable adjustment block 23 is arc-shaped, and the movable adjustment block 23 and the material receiving groove 13 form a relative sliding structure, so that when the feed roller 12 rotates, the movable adjustment block 23 can make a circular motion with the feed roller 12 without The rotation of the feed roller 12 is hindered, and at the same time, the movable adjustment block 23 can block the opening of the feed trough 13 on the feed roller 12 to prevent the leakage of food from the feed trough 13. When the depth of the movable adjustment block 23 in the feed trough 13 changes, the material volume of the feed trough 13 itself can change accordingly, so that the discharge amount of the feed roller 12 in one reciprocating rotation changes accordingly, so that the staff can adjust the feeding amount according to the different types and growth stages of sturgeons and rainbow trout.

[0056] The threaded rod 22 is rotatably connected to the movable adjustment block 23, and the threaded rod 22 is threadably connected to the fixed plate 21, so that the staff can drive the movable adjustment block 23 to adjust the depth into the material trough 13 by rotating the threaded rod 22. At the same time, the threaded rod 22 can also be replaced by other similar structures that drive the movable adjustment block 23 to move and adjust, such as an electric push rod, etc., which is not limited here.

[0057] The working principle of the feeding device for sturgeon and rainbow trout in the present invention is as follows: the device is powered by an external power supply or a battery, and is installed between the sturgeon breeding pond 1 and the rainbow trout breeding pond 2 when in use. In the initial state, the slider 5 is located at one side of the inside of the slide 4, and the food storage bin 8 is located at the edge of the sturgeon breeding pond 1 and the rainbow trout breeding pond 2, so that it is convenient for the staff to put a sufficient amount of food into the food storage bin 8. Before putting food into the food storage bin 8, two groups of threaded rods 22 are rotated respectively according to the current growth stage of the sturgeon and rainbow trout, so that the movable adjustment block 23 penetrates into the corresponding material storage trough 13 by a specified amplitude, so that the single feeding amount can meet the current needs of the sturgeon and rainbow trout, and then a sufficient amount of food is put into the food storage bin 8;

[0058] When feeding is needed, the staff controls the double-headed servo motor 17 through the controller to drive the output shaft 18 to rotate accordingly, and the incomplete bevel gear 20 is located at a position meshing with the two sets of bevel gears 15. As mentioned above, at this time, the feed roller 12 can rotate back and forth continuously, so that the material trough 13 can intermittently transfer the food in the food storage bin 8 to one of the two sets of inclined discharge holes 11 and discharge it, so that the food is more evenly discharged laterally. Furthermore, the gear body 19 is meshed with the rack 16, so that the movable installation bin 6 can drive the food storage bin 8 to start horizontal longitudinal movement by connecting the support rod 7, so that the food storage bin 8 can be more evenly distributed longitudinally when discharging, until the food storage bin 8 moves to the edge of the other end of the sturgeon breeding pond 1 and the rainbow trout breeding pond 2. The centralized feeding task is completed this time, and the operation is convenient and quick.

[0059] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A method for integrated breeding of sturgeon and rainbow trout, characterized in that , including the following steps: S1. Equipment and site preparation: select a sunny and well-ventilated place to install the sturgeon breeding pond (1) and the rainbow trout breeding pond (2) as well as the feeding devices for sturgeon and rainbow trout, lay the water supply and drainage pipes for the sturgeon breeding pond (1) and the rainbow trout breeding pond (2), and perform preliminary disinfection on the sturgeon breeding pond (1) and the rainbow trout breeding pond (2), and then introduce water that meets the water quality standards into the sturgeon breeding pond (1) and the rainbow trout breeding pond (2); S2. Selecting and stocking fry: Select healthy and vigorous sturgeon and rainbow trout fry for disinfection, and then place them into corresponding sturgeon breeding ponds (1) and rainbow trout breeding ponds (2) for breeding; S3, feeding management, selecting corresponding food for sturgeon and rainbow trout and putting it into the feeding device for sturgeon and rainbow trout, feeding them regularly through the feeding device for sturgeon and rainbow trout, and adjusting the feeding frequency in a targeted manner according to the growth of sturgeon and rainbow trout and weather changes, and checking the growth of sturgeon and rainbow trout regularly to prevent and control diseases; S4. Fishing and sales: select time periods for fishing and sales based on the growth of sturgeons and rainbow trout and market conditions; The sturgeon and rainbow trout feeding device comprises a mounting frame (3) mounted between a sturgeon breeding pond (1) and a rainbow trout breeding pond (2); a slide groove (4) is provided at a middle position of the bottom of the mounting frame (3); a slide block (5) is provided inside the slide groove (4); a movable mounting bin (6) is installed at the bottom of the slide block (5); connecting support rods (7) are installed on both sides of the movable mounting bin (6); a food storage bin (8) is installed at one end of the connecting support rod (7) away from the movable mounting bin (6); The bottom of both sides of the food storage bin (8) are provided with inclined discharge holes (11), a feed roller (12) penetrates the bottom of one end of the food storage bin (8), and a material storage groove (13) is reserved at the top of the outer wall of the feed roller (12); A mounting shaft (14) is installed at one end of the feed roller (12) close to the food storage bin (8), and the mounting shaft (14) passes through the food storage bin (8). Two sets of bevel gears (15) are installed on the outer side of the end of the mounting shaft (14) away from the feed roller (12). Racks (16) are installed on both sides of the bottom of the mounting frame (3). A driving mechanism for driving the movable mounting bin (6) is provided in the movable mounting bin (6), and the driving mechanism is used to drive the feed roller (12) to rotate.

2. The integrated breeding method for sturgeon and rainbow trout according to claim 1, characterized in that: The cross-sectional shape of the sliding block (5) is "T"-shaped, and the sliding block (5) and the sliding groove (4) form a relative sliding mechanism.

3. The integrated breeding method for sturgeon and rainbow trout according to claim 1, characterized in that: The transverse central axis of the connecting support rod (7) is parallel to the transverse central axis of the movable installation bin (6), and the connecting support rod (7) and the movable installation bin (6) are integrally manufactured.

4. The integrated breeding method for sturgeon and rainbow trout according to claim 3, characterized in that: A support frame (9) is installed at the bottom of the food storage bin (8) away from the connecting support rod (7), and a support roller (10) is installed at the bottom of the support frame (9).

5. The integrated breeding method for sturgeon and rainbow trout according to claim 1, characterized in that: The driving mechanism comprises a double-headed servo motor (17), the double-headed servo motor (17) is mounted at the bottom of the movable mounting chamber (6), the output ends on both sides of the double-headed servo motor (17) are connected to output shafts (18), and the output shafts (18) penetrate the movable mounting chamber (6), the end of the output shaft (18) close to the double-headed servo motor (17) is mounted with a gear body (19), and the end of the output shaft (18) away from the double-headed servo motor (17) is mounted with an incomplete bevel gear (20).

6. The integrated breeding method for sturgeon and rainbow trout according to claim 5, characterized in that: The central axis of the gear body (19) is parallel to the transverse central axis of the rack (16), and the gear body (19) and the rack (16) are meshingly connected.

7. The integrated breeding method for sturgeon and rainbow trout according to claim 5, characterized in that: The incomplete bevel teeth (20) are perpendicular to the two groups of bevel gears (15), and the incomplete bevel teeth (20) are located at a position meshing with the two groups of bevel gears (15).

8. The integrated breeding method for sturgeon and rainbow trout according to claim 1, characterized in that: A fixing plate (21) is installed at one end of the feed roller (12) away from the mounting shaft (14); a threaded rod (22) passes through one end of the fixing plate (21); a movable adjustment block (23) is provided at one end of the threaded rod (22) close to the feed roller (12); and the movable adjustment block (23) extends to the interior of the material trough (13).

9. The integrated breeding method for sturgeon and rainbow trout according to claim 8, characterized in that: The threaded rod (22) is rotationally connected to the movable adjustment block (23), and the threaded rod (22) is threadedly connected to the fixed plate (21).

10. The integrated breeding method for sturgeon and rainbow trout according to claim 8, characterized in that: The top of the movable adjustment block (23) is arc-shaped, and the movable adjustment block (23) and the material containing groove (13) form a relative sliding structure.

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