Intelligent screening device for industrial aquaculture of mandarin fish

Abstract

The invention discloses an intelligent screening device for industrial aquaculture of mandarin fish, and belongs to the field of aquaculture, the intelligent screening device for industrial aquaculture of mandarin fish comprises a screening structure, the screening structure comprises a support, the lower portion of the rear end of the support is fixedly connected with an isolation device, and the lower portion of the front end of the support is fixedly connected with a linkage device; the lower end of the middle of the support is fixedly connected with two guiding structures, each guiding structure comprises a plurality of driving devices which are sequentially and fixedly connected from top to bottom, the upper portion of the rear end of each guiding structure is fixedly connected with an air interchanger, and the front end of each guiding structure is fixedly connected with a push rod. Through the screening structure, the mandarin fish can be screened without leaving the water surface, and the driving device can drive the mandarin fish with the size smaller than that of the round hole to pass through the isolation device through the threatening of sound and bubbles, so that the mandarin fish is not easy to cause stress reaction due to separation from the water surface when the mandarin fish is screened.

Description

Technical Field

[0001] The invention relates to the field of aquaculture, and more specifically to an intelligent screening device for factory-cultured mandarin fish. Background Art

[0002] Mandarin fish is a fish with delicious meat. Because it has few bones and grows quickly, it is currently farmed on a large scale.

[0003] Since mandarin fish is a carnivorous fish, it is very aggressive towards fish smaller than itself. Different mandarin fish grow at different rates in the same breeding pond, which results in the faster-growing larger mandarin fish easily swallowing the slower-growing smaller mandarin fish, resulting in a decrease in mandarin fish production. This requires regular body screening of mandarin fish. Traditional body screening of farmed fish usually involves taking the fish out of the water for manual sorting. However, due to its particularity, mandarin fish is prone to a greater stress response and death after leaving the water, which makes the traditional fish body screening method unsuitable for mandarin fish farming. Summary of the invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an intelligent screening device for factory-farmed mandarin fish, which can realize body size screening of mandarin fish without leaving the water surface through the screening structure, and the driving device can drive mandarin fish whose size is smaller than the round hole to pass through the isolation device through the threat of sound and bubbles, so that the mandarin fish is not easily subjected to stress response due to leaving the water surface when body size screening is carried out.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] The sieving device of the present invention is a kind of intelligent screening device for factory-farmed mandarin fish, comprising a breeding frame, the bottom of the side wall of the breeding frame is provided with symmetrically distributed strip grooves, the upper edge of the side wall of the breeding frame is fixedly installed with symmetrically distributed racks, the strip grooves and the racks are located on the same side of the breeding frame, and the middle of the breeding frame is slidably connected with a screening structure, the screening structure comprises a bracket, the lower part of the rear end of the bracket is fixedly connected with an isolation device, the lower part of the front end of the bracket is fixedly connected with a linkage device, the lower middle end of the bracket is fixedly connected with two guide structures, the guide structure comprises a plurality of driving devices fixedly connected in sequence up and down, the upper part of the rear end of the guide structure is fixedly connected with a ventilation device, the front end of the guide structure is fixedly connected with a push rod, the driving device comprises a shell, the middle part of the shell is provided with an air storage tank, the middle part of the front end of the air storage tank is slidably connected with a cross bar, the middle part of the air storage tank is slidably connected with a first rubber plug, the two front ends of the first rubber plug are fixedly connected with a tension spring, and the upper and lower ends of the cross bar are An elastic metal sheet is fixedly connected, and a placement groove is provided at both upper and lower ends of the air storage tank in the middle of the shell, and two rigid metal sheets are fixedly connected in the middle of the placement groove, a rectangular block is fixedly connected to the rear end of the shell, a rectangular groove is provided in the middle of the rectangular block, a first hollow ring body is fixedly connected in the middle of the rectangular groove, a first air channel is provided at both upper and lower ends of the rectangular groove in the middle of the rectangular block, a second rubber plug is slidably connected to the front side of the first hollow ring body in the middle of the rectangular groove, and two first compression springs are fixedly connected between the first hollow ring body and the second rubber plug in the middle of the rectangular groove, an air outlet is provided at the rear end of the rectangular block, a through hole is provided on the shell, and adjacent shells are connected to each other, and the screening structure allows the mandarin fish to be screened for body size without leaving the water surface, and the driving device can drive the mandarin fish whose size is smaller than the round hole to pass through the isolation device through the threat of sound and bubbles, so that the mandarin fish is not easy to cause stress reaction due to leaving the water surface when screening for body size.

[0007] Furthermore, the ventilation device includes a connecting pipe, the upper end of the connecting pipe is fixedly connected to a cylindrical block, the middle of the cylindrical block is provided with a cylindrical groove, the middle of the cylindrical groove is fixedly connected to a second hollow ring body, the middle of the cylindrical groove is located on the upper side of the second hollow ring body and is slidably connected to a third rubber plug, the middle of the cylindrical groove is located between the second hollow ring body and the third rubber plug and is fixedly connected to a second compression spring, the middle of the cylindrical groove is located on both sides of the cylindrical groove and a second air channel is provided, and the upper end of the cylindrical block is provided with an air inlet, so that the air inside the driving device can be replenished.

[0008] Furthermore, the isolation device includes a frame, a first drive module is installed at both corners of the upper end of the frame, a second drive module is installed at both corners of the lower end of the frame, the second drive module matches the strip groove, and a plurality of circular holes are equidistantly provided in the middle of the frame, so that the isolation device can block the mandarin fish whose body size is larger than the circular holes, and the first drive module and the second drive module can drive the screening structure to move without deviation.

[0009] Furthermore, the linkage device includes a rotating rod, both ends of which are fixedly connected to gears, the outer end of the rotating rod is fixedly connected to two driving wheels, both sides of the driving wheel are provided with support plates, the support plates located on both sides of the same driving wheel are rotatably connected to the middle of one end away from the driving wheel, a transmission belt is sleeved between the driving wheel and the driven wheel, the outer end of the transmission belt is fixedly connected to a push block, and the push rod can be driven when the screening structure moves.

[0010] Furthermore, the front end of the tension spring is fixedly connected to the inner wall of the shell, and the rigid metal sheet can hinder the movement of the elastic metal sheet, so that the tension spring can drive the first rubber plug to reset, and the rigid metal sheet can make a sound through the rebound impact of the elastic metal sheet, thereby intimidating the movement of the mandarin fish.

[0011] Furthermore, the shell is connected to the rectangular block, and the shell located on the uppermost side is connected to the connecting pipe, and the upper end of the connecting pipe is higher than the water surface, so that the gas can pass through the air outlet to form bubbles, and the air can enter the air storage tank, and the ventilation device is not easily submerged in water.

[0012] Furthermore, the rear end of the first airway is located at the rear side of the first hollow ring body, and the lower end of the second airway is located at the lower side of the second hollow ring body, so that the second rubber plug is not easy to block the first airway, and the third rubber plug is not easy to block the second airway.

[0013] Furthermore, the gear is meshedly connected with the rack, and the push block can drive the push rod to move during movement, and the support plate can be fixedly connected to the bracket, so that the gear can rotate through the rack during movement, and the push rod can be driven to move.

[0014] Compared with the prior art, the advantages of the present invention are: (1) This scheme uses a screening structure to make it possible for the mandarin fish to be screened for size without leaving the water surface, and the driving device can drive the mandarin fish whose size is smaller than the round hole to pass through the isolation device through the threat of sound and bubbles, so that the mandarin fish is not likely to suffer a stress reaction due to leaving the water surface during body size screening.

[0015] (2) The collision sound between the elastic metal sheet and the rigid metal sheet causes the mandarin fish to move toward the isolation device, and the bubbles released from the air outlet further drive the mandarin fish whose body size is smaller than the round hole to pass through the isolation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall stereogram of the present invention; Figure 2 It is a stereoscopic diagram of the screening structure of the present invention; Figure 3 It is a split stereogram of the screening structure of the present invention; Figure 4 A three-dimensional diagram of the isolation device of the present invention; Figure 5 It is a three-dimensional diagram of the linkage device of the present invention; Figure 6 A three-dimensional diagram of the guide structure of the present invention; Figure 7 A three-dimensional diagram of a driving device and a ventilation device of the present invention; Figure 8 It is a partial half-section stereoscopic view of the driving device and the ventilation device of the present invention; Fig. 9 A half-section front view schematic diagram of a driving device and a ventilation device of the present invention; Fig.10 for Fig. 9 A partial enlarged view of; Fig.11 for Fig. 9 B is a partial enlarged view; Fig.12 It is a schematic diagram of the working principle of the expelling device and the ventilation device of the present invention in the exhaust state; Fig.13 for Fig.12 A partial enlarged view of C.

[0017] Description of the numbers in the figure: 1. Cultivation frame; 2. Strip groove; 3. Rack; 4. Bracket; 5. Isolation device; 501. Frame; 502. First drive module; 503. Round hole; 504. Second drive module; 6. Linkage device; 601. Rotating rod; 602. Gear; 603. Driving wheel; 604. Support plate; 605. Driven wheel; 606. Transmission belt; 607. Push block; 7. Driving device; 701. Shell; 702. Air storage tank; 703. Crossbar; 704. First rubber plug; 705. Tension spring; 706. Elastic Metal sheet; 707, placement groove; 708, rigid metal sheet; 709, rectangular block; 710, rectangular groove; 711, first hollow ring body; 712, first airway; 713, second rubber plug; 714, first compression spring; 715, air outlet; 716, through hole; 8, ventilation device; 801, connecting pipe; 802, cylindrical block; 803, cylindrical groove; 804, second hollow ring body; 805, third rubber plug; 806, second compression spring; 807, second airway; 808, air inlet; 9, push rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of the adapter model component. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-13, an intelligent screening device for factory-farmed mandarin fish, comprising a breeding frame 1, a symmetrically distributed strip groove 2 is provided at the bottom of the side wall of the breeding frame 1, a symmetrically distributed rack 3 is fixedly installed at the upper edge of the side wall of the breeding frame 1, the strip groove 2 and the rack 3 are located on the same side of the breeding frame 1, a screening structure is slidably connected in the middle of the breeding frame 1, the screening structure comprises a bracket 4, an isolation device 5 is fixedly connected to the lower rear end of the bracket 4, a linkage device 6 is fixedly connected to the lower front end of the bracket 4, two guide structures are fixedly connected to the lower middle end of the bracket 4, the guide structure comprises a plurality of driving devices 7 fixedly connected in sequence up and down, a ventilation device 8 is fixedly connected to the upper rear end of the guide structure, a push rod 9 is fixedly connected to the front end of the guide structure, the driving device 7 comprises a shell 701, an air storage tank 702 is provided in the middle of the shell 701, a cross bar 703 is slidably connected to the middle of the front end of the air storage tank 702, a first rubber plug 704 is slidably connected to the middle of the air storage tank 702, and both front ends of the first rubber plug 704 are fixed A tension spring 705 is connected, and elastic metal sheets 706 are fixedly connected at the upper and lower ends of the cross bar 703. A placement groove 707 is provided at the upper and lower ends of the gas storage tank 702 in the middle of the shell 701, and two rigid metal sheets 708 are fixedly connected in the middle of the placement groove 707. A rectangular block 709 is fixedly connected to the rear end of the shell 701, a rectangular groove 710 is provided in the middle of the rectangular block 709, and a first hollow ring body 711 is fixedly connected in the middle of the rectangular groove 710. A first air channel 712 is provided in the middle of the rectangular block 709, and a second rubber plug 713 is slidably connected to the front side of the first hollow ring body 711 in the middle of the rectangular groove 710. Two first compression springs 714 are fixedly connected in the middle of the rectangular groove 710, and an air outlet 715 is provided at the rear end of the rectangular block 709. A through hole 716 is provided on the shell 701, and adjacent shells 701 are connected to each other.

[0022] See also Figure 1-11The ventilation device 8 includes a connecting pipe 801, a cylindrical block 802 is fixedly connected to the upper end of the connecting pipe 801, a cylindrical groove 803 is opened in the middle of the cylindrical block 802, a second hollow ring body 804 is fixedly connected to the middle of the cylindrical groove 803, a third rubber plug 805 is slidably connected to the middle of the cylindrical groove 803 located on the upper side of the second hollow ring body 804, a second compression spring 806 is fixedly connected to the middle of the cylindrical groove 803 located between the second hollow ring body 804 and the third rubber plug 805, a second air channel 807 is opened in the middle of the cylindrical block 802 on both sides of the cylindrical groove 803, and an air inlet 808 is opened at the upper end of the cylindrical block 802, so that the air inside the driving device 7 can be replenished. The isolation device 5 includes a frame 501, a first driving module 502 is installed at both corners of the upper end of the frame 501, and a second driving module 504 is installed at both corners of the lower end of the frame 501. The second driving module 504 includes a second leg fixedly connected to the frame 501, and two second rotating wheels are rotatably connected to the second leg, wherein the rotating shaft of one of the second rotating wheels is fixedly connected to the output shaft of the motor, and the motor is fixedly installed on the second leg, and the motor is powered by a power supply, which is installed inside the second leg, and the power supply and the motor are both waterproof and sealed; the first driving module 502 includes a first leg fixedly connected to the frame 501, and two first rotating wheels are rotatably connected to the first leg. The second driving module 504 matches the strip groove 2, and a plurality of circular holes 503 are equidistantly opened in the middle of the frame 501, so that the isolation device 5 can block the mandarin fish whose body size is larger than the circular holes 503, and the first driving module 502 and the second driving module 504 can drive the screening structure to move without deviation.

[0023] See also Figure 5-11 The linkage device 6 includes a rotating rod 601, both ends of the rotating rod 601 are fixedly connected with a gear 602, the outer end of the rotating rod 601 is fixedly connected with two driving wheels 603, both sides of the driving wheels 603 are provided with a supporting plate 604, and the supporting plates 604 located on both sides of the same driving wheel 603 are rotatably connected with a driven wheel 605 at the middle of one end away from the driving wheel 603, and a transmission belt 606 is sleeved between the driving wheel 603 and the driven wheel 605, and a push block 607 is fixedly connected to the outer end of the transmission belt 606, and when the screening structure moves, the push rod 9 can be driven. The front end of the tension spring 705 is fixedly connected to the inner wall of the housing 701, and the rigid metal sheet 708 can hinder the movement of the elastic metal sheet 706, so that the tension spring 705 can drive the first rubber plug 704 to reset, and the rigid metal sheet 708 can make a sound through the rebound impact of the elastic metal sheet 706, thereby intimidating the mandarin fish to move.

[0024] See also Figure 1-11The shell 701 is connected to the rectangular block 709, and the shell 701 located at the uppermost side is connected to the connecting pipe 801, and the upper end of the connecting pipe 801 is higher than the water surface, so that the gas can pass through the gas outlet 715 to form bubbles, and the air can enter the gas storage tank 702, and the ventilation device 8 is not easily submerged by water. The rear end of the first airway 712 is located at the rear side of the first hollow ring body 711, and the lower end of the second airway 807 is located at the lower side of the second hollow ring body 804, so that the second rubber plug 713 is not easy to block the first airway 712, and the third rubber plug 805 is not easy to block the second airway 807. The gear 602 is meshed with the rack 3, and the push block 607 can drive the push rod 9 to move during the movement, and the support plate 604 can be fixedly connected to the bracket 4, so that the gear 602 can rotate through the rack 3 during the movement, and the push rod 9 can be driven to move.

[0025] When screening, the first drive module 502 and the second drive module 504 are powered on and started, and the first drive module 502 and the second drive module 504 drive the screening structure to move slowly through the isolation device 5, and the gear 602 rotates through the rack 3 during the movement, and the gear 602 drives the driving wheel 603 to rotate through the rotating rod 601, and the driving wheel 603 drives the push block 607 to move through the driven wheel 605 and the transmission belt 606, and the push block 607 contacts the push rod 9 during the movement and drives the push rod 9 to move horizontally; The push rod 9 drives the first rubber plug 704 to move toward the rectangular block 709 through the cross bar 703. At the same time, the elastic metal sheet 706 contacts and deforms with the rigid metal sheet 708. The cross bar 703 continues to move so that the elastic metal sheet 706 is no longer limited by the rigid metal sheet 708. The elastic metal sheet 706 contacts and collides with the rigid metal sheet 708 during the movement and reset process and makes a sound. The sound scares the mandarin fish located between the guide structure and the isolation device 5 and swims toward the isolation device 5. At the same time, the first rubber plug 704 The gas inside the gas storage tank 702 is squeezed. At this time, the third rubber plug 805 seals the air inlet 808 under the action of the second compression spring 806. At the same time, the gas squeezes the second rubber plug 713 to move toward the first hollow ring body 711. The gas passes through the first air channel 712 and is discharged through the air outlet 715 to form a large number of bubbles. The bubbles make the mandarin fish move further toward the isolation device 5. The mandarin fish with a body size smaller than the round hole 503 passes through the isolation device 5, while the mandarin fish with a body size larger than the round hole 503 cannot pass through the isolation device 5 and are thus screened out. The push block 607 continues to move and is no longer in contact with the push rod 9. The first rubber plug 704 is reset under the action of the tension spring 705. At this time, negative pressure is formed inside the air storage tank 702. Under the action of the first compression spring 714, the second rubber plug 713 blocks the rectangular groove 710. At the same time, under the action of atmospheric pressure, the third rubber plug 805 overcomes the second compression spring 806 and moves downward. Air enters the air storage tank 702 through the air inlet 808 and the second air channel 807. During the reset process of the first rubber plug 704, no bubbles are discharged from the air outlet 715, and the remaining mandarin fish that have not been screened enters between the guide structure and the isolation device 5. The screening structure keeps moving, and the above operation is repeated, so that the mandarin fish in the culture frame 1 can be screened without leaving the water. The screening structure can be used to screen the mandarin fish without leaving the water surface, and the driving device 7 can drive the mandarin fish whose size is smaller than the round hole 503 to pass through the isolation device 5 through the sound and the threat of bubbles, so that the mandarin fish is not likely to cause a stress reaction due to leaving the water surface when the body size is screened.

[0026] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An intelligent screening device for factory-farmed mandarin fish, comprising a breeding frame (1), wherein the bottom of the side wall of the breeding frame (1) is provided with symmetrically distributed strip grooves (2), and the upper edge of the side wall of the breeding frame (1) is fixedly provided with symmetrically distributed racks (3), wherein the strip grooves (2) and the racks (3) are located on the same side of the breeding frame (1), and a screening structure is slidably connected to the middle of the breeding frame (1), characterized in that: The screening structure comprises a support (4), an isolating device (5) is fixedly connected to the lower rear end of the support (4), a linkage device (6) is fixedly connected to the lower front end of the support (4), two guide structures are fixedly connected to the lower middle end of the support (4), the guide structure comprises a plurality of driving devices (7) fixedly connected in sequence up and down, a ventilation device (8) is fixedly connected to the upper rear end of the guide structure, and a push rod (9) is fixedly connected to the front end of the guide structure; The driving device (7) comprises a shell (701), a gas storage tank (702) is provided in the middle of the shell (701), a cross bar (703) is slidably connected to the middle of the front end of the gas storage tank (702), a first rubber plug (704) is slidably connected to the middle of the gas storage tank (702), both front ends of the first rubber plug (704) are fixedly connected to tension springs (705), the upper and lower ends of the cross bar (703) are fixedly connected to elastic metal sheets (706), a placement groove (707) is provided in the middle of the shell (701) at both the upper and lower ends of the gas storage tank (702), the middle of the placement groove (707) is fixedly connected to two rigid metal sheets (708), and a rectangular block (704) is fixedly connected to the rear end of the shell (701). 9), a rectangular groove (710) is provided in the middle of the rectangular block (709), a first hollow ring body (711) is fixedly connected in the middle of the rectangular groove (710), a first air channel (712) is provided in the middle of the rectangular block (709) at both the upper and lower ends of the rectangular groove (710), a second rubber plug (713) is slidably connected in the middle of the rectangular groove (710) at the front side of the first hollow ring body (711), two first compression springs (714) are fixedly connected in the middle of the rectangular groove (710) between the first hollow ring body (711) and the second rubber plug (713), an air outlet (715) is provided at the rear end of the rectangular block (709), a through hole (716) is provided on the shell, and adjacent shells (701) are connected to each other.

2. The intelligent screening device for industrialized cultured mandarin fish according to claim 1, characterized in that: The ventilation device (8) comprises a connecting pipe (801), the upper end of the connecting pipe (801) is fixedly connected to a columnar block (802), the middle of the columnar block (802) is provided with a columnar groove (803), the middle of the columnar groove (803) is fixedly connected to a second hollow ring body (804), the middle of the columnar groove (803) is located on the upper side of the second hollow ring body (804) and is slidably connected to a third rubber plug (805), the middle of the columnar groove (803) is located between the second hollow ring body (804) and the third rubber plug (805) and is fixedly connected to a second compression spring (806), the middle of the columnar groove (803) is located on both sides of the columnar groove (803) and is provided with a second air channel (807), and the upper end of the columnar block (802) is provided with an air inlet (808).

3. The intelligent screening device for industrialized cultured mandarin fish according to claim 1, characterized in that: The isolation device (5) comprises a frame (501), wherein first drive modules (502) are installed at both corners of the upper end of the frame (501), and second drive modules (504) are installed at both corners of the lower end of the frame (501), wherein the second drive modules (504) match the strip-shaped grooves (2), and a plurality of circular holes (503) are equidistantly provided in the middle of the frame (501).

4. The intelligent screening device for industrialized cultured mandarin fish according to claim 1, characterized in that: The linkage device (6) comprises a rotating rod (601), both ends of the rotating rod (601) are fixedly connected to gears (602), the outer end of the rotating rod (601) is fixedly connected to two driving wheels (603), both sides of the driving wheel (603) are provided with supporting plates (604), the supporting plates (604) located on both sides of the same driving wheel (603) are rotatably connected to a driven wheel (605) at the middle of one end away from the driving wheel (603), a transmission belt (606) is sleeved between the driving wheel (603) and the driven wheel (605), and the outer end of the transmission belt (606) is fixedly connected to a push block (607).

5. The intelligent screening device for industrialized cultured mandarin fish according to claim 1, characterized in that: The front end of the tension spring (705) is fixedly connected to the inner wall of the housing (701), and the rigid metal sheet (708) is capable of hindering the movement of the elastic metal sheet (706).

6. The intelligent screening device for industrialized culture of mandarin fish according to claim 2, characterized in that: The shell (701) and the rectangular block (709) are connected, and the shell (701) located at the uppermost side is connected to the connecting pipe (801), and the upper end of the connecting pipe (801) is higher than the water surface.

7. The intelligent screening device for industrialized cultured mandarin fish according to claim 2, characterized in that: The rear end of the first air channel (712) is located at the rear side of the first hollow ring body (711), and the lower end of the second air channel (807) is located at the lower side of the second hollow ring body (804).

8. The intelligent screening device for industrialized cultured mandarin fish according to claim 4, characterized in that: The gear (602) is meshingly connected with the rack (3), and the push block (607) can drive the push rod (9) to move during movement, and the support plate (604) can be fixedly connected with the bracket (4).

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