Adjustable discharging device

Abstract

The utility model discloses an adjustable discharging device, which comprises a blanking frame, a feeding frame and a discharging frame, the material guide triangular plates are arranged at intervals in the left-right direction, and first material passing gaps are formed in the bottoms of the adjacent material guide triangular plates; the supporting plate is arranged below the first material passing gap, and a second material passing gap is formed between the supporting plate and the bottom of the material guiding triangular plate; the lifting adjusting mechanism is used for driving the supporting plate to lift; the swing mechanism is used for driving the supporting plate to swing in a reciprocating mode so as to drive the materials on the supporting plate to penetrate through the second material passing gap. According to the grain discharging device, the second material passing gap is formed by the material guide triangular plate and the supporting plate, the distance of the second material passing gap can be adjusted through cooperation of the lifting adjusting mechanism and the swing mechanism, materials on the supporting plate are driven to penetrate through the gap, and therefore adaptive grain discharging of crops with different grain sizes is achieved; the gap size can be adjusted according to crops with different particle sizes, so that the adaptability of the grain discharging mechanism is improved, and the problem that a traditional grain discharging wheel is difficult to adapt to the crops with different particle sizes is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery technical field, in particular, relate to an adjustable discharging device. BACKGROUND

[0002] In the field of agricultural mechanization, especially in crop drying machines, the grain discharging mechanism is a key component. The traditional grain discharging mechanism mostly uses grain discharging wheels (star wheel grain discharging rollers) for grain discharging. This design has some limitations and problems in actual operation. Specifically, the existing grain discharging wheel grain discharging mechanism has difficulty in achieving good adaptability when facing crops of different particle sizes. This is because the gap and shape of the grain discharging wheel are usually fixed and cannot be adjusted according to the size of the crop particles, resulting in the possibility of breaking crops or seeds during the grain discharging process, which not only affects the operation effect of the drying machine, but also reduces the yield. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides an adjustable discharging device.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] An adjustable discharging device comprises: a discharging frame; a material guiding triangular plate, one of the corners of the material guiding triangular plate is arranged upward, the material guiding triangular plate is installed in the discharging frame, the material guiding triangular plates are arranged in the left-right direction, and the adjacent material guiding triangular plates form a first material passing gap at the bottom; a supporting plate is arranged below the first material passing gap and forms a second material passing gap with the bottom of the material guiding triangular plate; a lifting adjusting mechanism is installed in the discharging frame and connected with the supporting plate, which is used to drive the supporting plate to lift and move, so as to adjust the distance of the second material passing gap; and a swinging mechanism is installed in the discharging frame and connected with the supporting plate, which is used to drive the supporting plate to swing back and forth, so as to drive the material on the supporting plate to pass through the second material passing gap.

[0006] Further, the lifting adjusting mechanism comprises a rotating shaft rotatably installed in the discharging frame, the rotating shaft is arranged in the space surrounded by the material guiding triangular plate; a swing arm capable of rotating synchronously with the rotating shaft is installed on the rotating shaft, a connecting rod is hinged to the end of the swing arm away from the rotating shaft, and the end of the connecting rod away from the swing arm is hinged to the supporting plate, and the width of the supporting plate is greater than the width of the first material passing gap.

[0007] Further, one end of the rotating shaft penetrates through the side wall of the discharging frame and is connected with a swinging handle, and the swinging handle rotates synchronously with the rotating shaft.

[0008] Further, the discharging frame is provided with a connecting seat corresponding to the outer side of the swinging handle, the connecting seat is provided with two spaced vertical blocks, the swinging handle is located between the two vertical blocks and can swing between the two vertical blocks.

[0009] Further, the stand is provided with a limiting strip at one end away from the connecting seat, the swing handle is located between the connecting seat and the limiting strip, the swing handle is provided with a limiting hole, the limiting strip is provided with a plurality of perforations arranged around at a position corresponding to the limiting hole, and the limiting hole is aligned with one of the perforations and penetrates into the limiting pin.

[0010] Further, the rotating shaft extends in the front-rear direction, and the front and rear sidewalls of the blanking frame are provided with guide cylinders, and the rotating shaft is rotatably installed in the guide cylinders.

[0011] Further, the swing mechanism comprises a motor, an eccentric block and a transmission rod, the output shaft of the motor is connected with the eccentric block to drive the eccentric block to rotate, one end of the transmission rod is hingedly connected with the supporting plate, and the other end is hingedly connected with the eccentric block.

[0012] Further, the number of the guide triangular plates is greater than three, the supporting plates are arranged in one-to-one correspondence with the first material passing gaps, adjacent supporting plates can be connected through the tandem rod at the bottom, and the lifting adjusting mechanism and the swing mechanism are connected with the tandem rod.

[0013] Further, the guide triangular plate is internally provided with a reinforcing rib plate, and the reinforcing rib plate is attached to part of the inner wall of the guide triangular plate.

[0014] Further, the guide triangular plate is provided with a vertical plate extending vertically downward at the bottom, a positioning strip plate is installed at the inner side of the vertical plate, the positioning strip plate is provided with a positioning protrusion, and the reinforcing rib plate is provided with a positioning notch matched with the positioning protrusion at the bottom side edge.

[0015] The utility model has the following beneficial effects:

[0016] The second material passing gap formed by the guide triangular plate and the supporting plate can be adjusted in spacing through the cooperation of the lifting adjusting mechanism and the swing mechanism, and the material on the supporting plate can be driven to pass through the gap, so that the adaptability of the grain discharging mechanism to different particle size crops is improved.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings that form a part of this application are intended to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:

[0019] Figure 1 is the overall structure schematic view of the embodiment of the utility model;

[0020] Figure 2 is Figure 1 the enlarged view of A of the utility model;

[0021] Figure 3 is the sectional view of the utility model;

[0022] Figure 4 is Figure 3 the enlarged view of B of the utility model;

[0023] Figure 5 is the bottom view angle structure schematic view of the embodiment of the utility model;

[0024] Figure 6 is Figure 5 the enlarged view of C of the utility model;

[0025] Figure 7 is Figure 5 the enlarged view of D of the utility model;

[0026] Figure 8 is the sectional view of the end of the rotating shaft;

[0027] Figure 9 is the connection structure schematic view of the swing handle and the connecting seat of another embodiment of the utility model;

[0028] Figure 10 is Figure 9 the exploded state structure schematic view of the utility model.

[0029] Legend:

[0030] Blanking frame 100, connecting seat 110, vertical block 111, limiting strip 112, perforation 113, guide cylinder 120;

[0031] Material guiding triangular plate 200, first material passing gap 210, reinforcing rib plate 220, positioning notch 221, vertical plate 230, positioning strip plate 240, positioning protrusion 241;

[0032] Support plate 300, second material passing gap 310, series connection rod 320;

[0033] Lifting adjusting mechanism 400, rotating shaft 410, swing arm 420, connecting rod 430, swing handle 440, limiting hole 441, limiting head 450, lifting plate 460, movable hole 461;

[0034] Swing mechanism 500, motor 510, eccentric block 520, transmission rod 530;

[0035] Inserting column 600, nut 610, radial convex ring 620, compression spring 630;

[0036] Press handle 700, lifting part 710, U-shaped groove 711, operating part 720. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0041] Please refer to Figures 1 to 4 An adjustable material discharge device in a preferred embodiment of the present invention includes a material discharge frame 100, a guide triangle plate 200, a support plate 300, a lifting adjustment mechanism 400, and a swing mechanism 500.

[0042] One of the pointed corners of the guide triangle 200 is positioned upwards. Material flows downwards along the inclined side of the guide triangle 200. The guide triangle 200 is installed within the unloading frame 100. The guide triangles 200 are spaced apart in the left-right direction, and adjacent guide triangles 200 form a first material passage gap 210 at the bottom, allowing material to pass through. Typically, the first material passage gap 210 is fixed and not adjustable. It is understood that the number of first material passage gaps 210 is one less than the number of guide triangles 200.

[0043] The supporting plate 300 is arranged below the first material passing gap 210, and the supporting plate 300 and the bottom of the material guiding triangular plate 200 form a second material passing gap 310, and the material needs to pass through the second material passing gap 310 to fall and realize discharging. It can be understood that the number and position of the supporting plate 300 correspond to the first material passing gap 210, that is, one supporting plate 300 is arranged below each first material passing gap 210.

[0044] The lifting adjusting mechanism 400 is installed on the discharging frame 100, is connected with the supporting plate 300, and is used for driving the supporting plate 300 to lift and move, so as to adjust the spacing of the second material passing gap 310.

[0045] The swinging mechanism 500 is installed on the discharging frame 100, is connected with the supporting plate 300, and is used for driving the supporting plate 300 to swing back and forth, so as to drive the material on the supporting plate 300 to pass through the second material passing gap 310. Generally, the material will accumulate on the supporting plate 300 and will not easily slide out of the second material passing gap 310, and the left and right reciprocating movement of the supporting plate 300 can drive the granular material to pass through the second material passing gap 310, and with the reciprocating movement, the material on the supporting plate 300 will be gradually squeezed to the edge and finally fall off, and the continuous reciprocating movement of the supporting plate 300 can realize continuous discharging.

[0046] The adjustable discharging device provided by the utility model, through the second material passing gap 310 formed by the material guiding triangular plate 200 and the supporting plate 300, through the cooperation of the lifting adjusting mechanism 400 and the swinging mechanism 500, the spacing of the second material passing gap 310 can be adjusted, and the material on the supporting plate 300 is driven to pass through the second material passing gap 310, so that the adaptability of discharging different sizes of crops is realized; the size of the gap can be adjusted according to different sizes of crops, so that the adaptability of the discharging mechanism is improved, and the problem that the traditional discharging wheel is difficult to adapt to different sizes of crops is solved. The crops can be tea fruits or other granular agricultural products.

[0047] Referring to Figure 3 , Figure 5 and Figure 6 , the lifting adjusting mechanism 400 comprises a rotating shaft 410 rotatably installed on the discharging frame 100, the rotating shaft 410 is arranged in the space surrounded by the material guiding triangular plate 200, so that the rotating shaft 410 does not interfere with the material falling; the rotating shaft 410 is provided with a swing arm 420 capable of rotating synchronously with the rotating shaft 410, one end of the swing arm 420 away from the rotating shaft 410 is hingedly connected with a connecting rod 430, one end of the connecting rod 430 away from the swing arm 420 is hingedly connected with the supporting plate 300, and the width of the supporting plate 300 is greater than the width of the first material passing gap 210. Figure 3As shown, the connecting rod 430 is in a vertical or nearly vertical state, at this time, the rotating shaft 410 drives the swing arm 420 to rotate, mainly to change the height of the connecting rod 430 and the supporting plate 300, although the supporting plate 300 will have a certain movement in the width direction (left and right direction), but since the width of the supporting plate 300 is greater than the width of the first material passing gap 210, within the activity range of the supporting plate 300, even if the supporting plate 300 is driven by the swing arm 420 to have a certain displacement in the width direction, it does not affect the supporting plate 300 to cover the first material passing gap 210 in the width direction, and does not affect the control of the falling material. Of course, in other embodiments, the lifting adjusting mechanism 400 can also be a telescopic motor to drive the supporting plate 300 to rise and fall.

[0048] With reference to Figure 3 And Figure 5 In further embodiments of the present application, the rotating shaft 410 is connected with a swing handle 440 at one end, and the swing handle 440 rotates synchronously with the rotating shaft 410, so that the rotating shaft 410 can be driven to rotate by operating the swing handle 440 outside the blanking frame 100, and the height size of the second material passing gap 310 can be conveniently adjusted by operating the rotating shaft 410.

[0049] With reference to Figure 2 In further embodiments of the present application, the blanking frame 100 is provided with a connecting seat 110 corresponding to the outer side surface of the swing handle 440, the connecting seat 110 is provided with two spaced apart vertical blocks 111, and the swing handle 440 is located between the two vertical blocks 111 and can swing between the two vertical blocks 111, thereby limiting the rotation range of the swing handle 440 and the rotating shaft 410. It can be understood that when the swing handle 440 swings between the two vertical blocks 111, the connecting rod 430 is always in a vertical or nearly vertical state, and the angle between the connecting rod 430 and the plumb line is not more than 15 degrees, thereby reducing the horizontal displacement amount of the supporting plate 300 during lifting and moving.

[0050] With reference to Figure 2In further embodiments of the utility model, the end of the vertical block 111 away from the connecting seat 110 is provided with a limiting strip 112, the swing handle 440 is located between the connecting seat 110 and the limiting strip 112, the swing handle 440 is provided with a limiting hole 441, the limiting strip 112 is provided with a plurality of through holes 113 arranged around the position corresponding to the limiting hole 441, the through holes 113 are arranged around the rotation shaft, the limiting hole 441 is aligned with one of the through holes 113 and the limiting pin is inserted into the limiting hole 441 so as to realize the fixation of the position and the angle, the limiting hole 441 is aligned with different through holes 113, that is, the second material passing gap 310 of different sizes is corresponded, so that the interval of the second material passing gap 310 is adjusted by switching different through holes 113 to adapt to the crops of different particle sizes. Generally, the size of the second material passing gap 310 does not need to be adjusted frequently in real time to adapt to different crops, generally, before use, the limiting hole 441 is aligned with the through hole 113 and the limiting pin is inserted to fix the second material passing gap 310 at a size to adapt to the crop particles to be faced. When a kind of crop needs to be replaced, the limiting pin is pulled out, the swing handle 440 is rotated to make the limiting hole 441 aligned with another suitable position of the through hole 113 and the limiting pin is inserted again to realize the interval size adjustment of the second material passing gap 310.

[0051] As Figure 9 and Figure 10As shown, in some other embodiments of the utility model, still include the post 600. Swing handle 440 is connected with the upper lifting plate 460 at interval, the upper lifting plate 460 is equipped with the movable hole 461 with the alignment of perforation 113, the post 600 is movably provided in movable hole 461, the post 600 one end is used for inserting into perforation 113, the other passes through movable hole 461 and is equipped with nut 610, the post 600 peripheral wall is equipped with radial convex ring 620, radial convex ring 620 is located between the upper lifting plate 460 and connecting seat 611, the post 600 is equipped with compression spring 630, and the both ends of compression spring 630 are respectively abutted with radial convex ring 620 and upper lifting plate 460, to exert the force of the post 600 towards perforation 113, so that the post 600 can keep in the state of inserting into perforation 113 when there is no external force, so that the height of the supporting plate 300 and the distance of the second material gap 310 keep stable. The upper lifting plate 460 is hingedly connected with a pressing handle 700, one end of the pressing handle 700 is provided with a lifting portion 710, the other end is provided with an operating portion 720, the lifting portion 710 is provided with a U-shaped notch 711 for embedding the post 600; the lifting portion 710 is located between the nut 610 and the upper lifting plate 460, so that when the operating portion 720 is pressed, the lifting portion 710 can lift the nut 610 and the post 600, so that the post 600 is separated from the perforation 113. The contour of the nut 610 is larger than the movable hole 461, so that the post 600 is prevented from separating from the movable hole 461, and the outer peripheral contour of the nut 610 is larger than the post 600, so that the lifting portion 710 can still contact the nut 610 after avoiding the post 600, so that the nut 610 and the post 600 can be lifted. And the post 600 can be easily lifted by the pressing handle 700, and the operation is simple. When adjustment is needed, hold the upper lifting plate 460 and press the operating portion 720, the lifting portion 710 lifts the nut 610 and the post 600, so that the post 600 is separated from the perforation 113, then the upper lifting plate 460 is rotated around the rotating shaft 410, so that the post 600 is aligned with another suitable position of the perforation 113, and the operating portion 720 is released, the post 600 is reinserted into the aligned perforation 113, and the distance size adjustment of the second material gap 310 is realized to adapt to different crop drying and discharging requirements.

[0052] With reference to Figure 8 In further embodiments of the utility model, the rotating shaft 410 extends in the front-rear direction, and the front and rear side walls of the discharging frame 100 are provided with guide cylinders 120, and the rotating shaft 410 is rotatably installed in the guide cylinders 120, so as to realize the positioning and rotation guiding of the rotating shaft 410. In addition, in order to realize the axial positioning of the rotating shaft 410, the rotating shaft 410 is threadedly connected with limiting heads 450 at both ends, and the outer peripheral contour of the limiting head 450 is larger than the center hole of the guide cylinder 120.

[0053] With reference to Figure 3 And Figure 7In further embodiments of the present application, the swing mechanism 500 comprises a motor 510, an eccentric block 520 and a transmission rod 530, the output shaft of the motor 510 is connected with the eccentric block 520 to drive the eccentric block 520 to rotate, one end of the transmission rod 530 is hinged with the supporting plate 300, and the other end is hinged with the eccentric block 520. Thus, the motor 510 drives the eccentric block 520 to rotate, and finally drives the supporting plate 300 to move left and right through the transmission rod 530. It can be understood that when the supporting plate 300 moves left and right, the transmission rod 530 will drive the supporting plate 300 to move up and down slightly, and the up and down movement is beneficial to the smooth flow of the material from the second material passing gap 310, and the left and right movement of the supporting plate 300 in combination with the slight up and down movement makes the material flow and discharging more smooth.

[0054] With reference to Figure 1 and Figure 3 In further embodiments of the present application, the number of the material guiding triangular plates 200 is greater than three, the supporting plates 300 are arranged in one-to-one correspondence with the first material passing gaps 210, adjacent supporting plates 300 can be connected through the bottom series connection rods 320, and the lifting adjusting mechanism 400 and the swing mechanism 500 are connected with the series connection rods 320. Thus, the swing mechanism 500 and the lifting adjusting mechanism 400 can drive multiple supporting plates 300 to move at the same time, the number of driving mechanisms is reduced, and of course, in order to ensure sufficient power and facilitate arrangement, the supporting plates 300 can be provided with multiple groups, each group comprising two or more adjacent supporting plates 300, the supporting plates 300 in the same group can be connected through the series connection rods 320, the supporting plates 300 in different groups are not connected, and the supporting plates 300 in different groups need to be provided with different lifting adjusting mechanisms 400 and swing mechanisms 500. In addition, the series connection rods 320 corresponding to the supporting plates 300 in the same group can be multiple, and the lifting adjusting mechanism 400 and the swing mechanism 500 can be connected to the series connection rods 320 at different positions.

[0055] With reference to Figure 3 and Figure 4 In further embodiments of the present application, the material guiding triangular plate 200 is provided with a reinforcing rib plate 220, and the reinforcing rib plate 220 is attached to part of the inner wall of the material guiding triangular plate 200, so as to improve the structural strength of the material guiding triangular plate 200 and reduce its deformation.

[0056] With reference to Figure 3 and Figure 4 In further embodiments of the present application, the material guiding triangular plate 200 is provided with a vertical plate 230 extending vertically downward at the bottom, a positioning strip plate 240 is installed inside the vertical plate 230, the positioning strip plate 240 is provided with a positioning protrusion 241, and the reinforcing rib plate 220 is provided with a positioning notch 221 matched with the positioning protrusion 241, so as to realize the positioning of the reinforcing rib plate 220 by the cooperation of the positioning protrusion 241 and the positioning notch 221.

[0057] The above merely is preferred embodiment of the present utility model, and is not for limiting the present utility model, for the person skilled in the art, the present utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An adjustable discharge device, characterized in that, include: Material feeding frame (100); A guide triangle plate (200) is provided, with one of its sharp corners facing upwards. The guide triangle plate (200) is installed inside the unloading frame (100). The guide triangle plates (200) are spaced apart in the left and right directions. Adjacent guide triangle plates (200) form a first material passage gap (210) at the bottom. The pallet (300) is located below the first material passage gap (210) and forms a second material passage gap (310) with the bottom of the guide triangle plate (200); The lifting adjustment mechanism (400) is installed on the unloading frame (100) and connected to the pallet (300). It is used to drive the pallet (300) to lift and move to adjust the spacing of the second material passage gap (310). The swing mechanism (500) is installed on the feeding frame (100) and connected to the pallet (300). It is used to drive the pallet (300) to swing back and forth so as to drive the material on the pallet (300) through the second material passage gap (310).

2. The adjustable discharge device according to claim 1, characterized in that, The lifting adjustment mechanism (400) includes a rotating shaft (410) rotatably mounted on the unloading frame (100), the rotating shaft (410) passing through the space enclosed by the guide triangle plate (200); a swing arm (420) that can rotate synchronously with the rotating shaft (410) is mounted on the rotating shaft (410), a connecting rod (430) is hinged to one end of the swing arm (420) away from the rotating shaft (410), and the end of the connecting rod (430) away from the swing arm (420) is hinged to the pallet (300), the width of the pallet (300) is greater than the width of the first material passage gap (210).

3. The adjustable discharge device according to claim 2, characterized in that, One end of the rotating shaft (410) extends through the side wall of the feeding frame (100) and is connected to a swing handle (440), which rotates synchronously with the rotating shaft (410).

4. The adjustable discharge device according to claim 3, characterized in that, The feeding frame (100) is provided with a connecting seat (110) on the outer side of the swing handle (440). The connecting seat (110) is provided with two spaced-apart uprights (111). The swing handle (440) is located between the two uprights (111) and can swing between the two uprights (111).

5. The adjustable discharge device according to claim 4, characterized in that, The end of the stand block (111) away from the connecting seat (110) is provided with a limiting strip (112). The swing handle (440) is located between the connecting seat (110) and the limiting strip (112). The swing handle (440) is provided with a limiting hole (441). The limiting strip (112) is provided with a circumferential arrangement of through holes (113) corresponding to the position of the limiting hole (441). The limiting hole (441) is aligned with one of the through holes (113) and a limiting pin is inserted.

6. The adjustable discharge device according to claim 2, characterized in that, The rotating shaft (410) extends in the front-to-back direction, and the front and rear side walls of the feeding frame (100) are provided with guide cylinders (120), and the rotating shaft (410) is rotatably mounted on the guide cylinders (120).

7. The adjustable discharge device according to claim 1, characterized in that, The swing mechanism (500) includes a motor (510), an eccentric block (520) and a transmission rod (530). The output shaft of the motor (510) is connected to the eccentric block (520) to drive the eccentric block (520) to rotate. One end of the transmission rod (530) is hinged to the support plate (300), and the other end is hinged to the eccentric block (520).

8. The adjustable discharge device according to claim 1, characterized in that, The number of the guide triangles (200) is greater than three. The pallets (300) are set one-to-one with the first material passage gap (210). Adjacent pallets (300) can be connected by the connecting rod (320) at the bottom. The lifting adjustment mechanism (400) and the swing mechanism (500) are both connected to the connecting rod (320).

9. The adjustable discharge device according to claim 1, characterized in that, A reinforcing rib plate (220) is installed inside the guide triangle plate (200), and the reinforcing rib plate (220) is in contact with part of the inner wall of the guide triangle plate (200).

10. The adjustable discharge device according to claim 9, characterized in that, The bottom of the guide triangle plate (200) is provided with a vertical plate (230) extending downwards. A positioning strip plate (240) is installed on the inner side of the vertical plate (230). The positioning strip plate (240) is provided with a positioning protrusion (241). The bottom side of the reinforcing rib plate (220) is provided with a positioning notch (221) that matches the positioning protrusion (241).

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