A kind of LED curtain wall splicing bracket

Abstract

The present invention discloses an LED curtain wall splicing bracket, and the present invention relates to the technical field of LED curtain walls. The LED curtain wall splicing bracket comprises a wind blocking device, a splicing device, a ventilation device, a protective device, a collecting trough and a bottom plate, the two ends of the wind blocking device are respectively fixedly connected to the surfaces of the splicing device and the ventilation device, the bottom of the collecting trough is fixedly connected to the top of the ventilation device, the top of the protective device is fixedly connected to the bottom of the collecting trough, the surface of the protective device is rotatably connected to the surface of the bottom plate, the wind blocking device comprises a bent plate, a slide groove is provided on the upper surface of the bent plate, and a slider is slidably connected to the surface of the slide groove, so as to relieve the wind extrusion and impact; relieve the pressure of a large amount of wind to prevent the wind from damaging the entire wind blocker; cool the back of the LED screen; dissipate the heat inside the entire device; and protect the LED screen.

Description

Technical Field

[0001] The invention relates to the technical field of LED curtain walls, in particular to an LED curtain wall splicing bracket. Background Art

[0002] The LED curtain wall screen is composed of LED dot matrices, which display text, pictures, animations, and videos by turning on and off red, green, and blue lamps. The content can be changed at any time. Each component is a display device with a modular structure. The modular LED screens are combined to obtain a complete screen, which is easy to carry and set up.

[0003] LED curtain walls in open air environments with strong winds are easily hit by wind, causing the entire splicing bracket to be blown down, and at the same time using the wind to cool down the equipment inside the splicing bracket; in addition, LED curtain walls in rainy weather will be eroded by rain, causing the equipment inside the splicing bracket to become damp and affect its performance; the operation of the equipment inside the splicing bracket will always generate a lot of heat, which will affect the operation of the entire equipment over time. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an LED curtain wall splicing bracket, including a wind blocking device, a splicing device, a ventilation device, a protective device, a collecting trough and a bottom plate.

[0005] The two ends of the wind blocking device are respectively fixedly connected to the surfaces of the splicing device and the ventilation device, the bottom of the collecting tank is fixedly connected to the top of the ventilation device, the top of the protective device is fixedly connected to the bottom of the collecting tank, and the surface of the protective device is rotatably connected to the surface of the bottom plate;

[0006] The wind blocking device comprises a bent plate, the left end of which is fixedly connected to the surface of the splicing device, the right end of which is fixedly connected to the surface of the ventilation device, a sliding groove is provided on the upper surface of the bent plate, a slider is slidably connected to the surface of the sliding groove, and a wind blocker is fixedly connected to the top of the slider, wherein the wind blocker plays a role in blocking wind from entering the interior of the entire device and relieving wind extrusion;

[0007] A spring is fixedly connected to the upper surface of the right half of the bent plate, and one end of the spring away from the bent plate is fixedly connected to a limit block, a rotating rod is sleeved on the surface of the limit block, and the bottom of the limit block is fixedly connected to the upper surface of the bent plate;

[0008] The splicing device includes an LED screen, wherein the rotation of the LED screen allows hot air to float out from the deflected gaps to achieve the effect of heat dissipation, the left end of the LED screen is fixedly connected to the surface of the breathable device, a puzzle board is inserted at the center position of the rear surface of the LED screen, and an end of the puzzle board away from the LED screen is fixedly connected to a perforated plate, and a drainage bag is fixedly connected to the right surface of the perforated plate, wherein the drainage bag plays a role in cooling the back of the LED screen, and a splicing point is fixedly connected to the bottom of the perforated plate.

[0009] Preferably, the ventilation device includes a beam column, the bottom of the beam column is fixedly connected to the top of the base plate, the top of the beam column is fixedly connected to a compression column, the top of the compression column is fixedly connected to the bottom of the collecting trough, the surface of the beam column is fixedly connected to an expansion ring in a circular array, and the surface of the beam column is fixedly connected to an air induced block.

[0010] Preferably, a support rod is fixedly connected to the surface of the expansion ring, a bending portion of the support rod is rotatably connected to a rotating shaft, a surface of the rotating shaft is fixedly connected to the surface of the puzzle board, an end of the support rod away from the expansion ring is fixedly connected to the rear surface of the LED screen, and a merging column is fixedly connected to the left end of the LED screen.

[0011] Preferably, the protective device includes a protective body, wherein the closing of the protective body plays a role in protecting the LED screen, the surface of the protective body is rotatably connected to the side of the bottom plate, the upper surface of the protective body is fixedly connected to a connecting plate, the end of the connecting plate away from the protective body is fixedly connected to a folding rod, the end of the folding rod away from the protective body is fixedly connected to a side frame, the end of the side frame away from the folding rod is fixedly connected to a bottom rod, and the top of the bottom rod is fixedly connected to the bottom of the collecting trough.

[0012] Preferably, the wind blocker comprises a transparent plate, the bottom of which is fixedly connected to a lateral plate, the front and rear surfaces of the lateral plate are fixedly connected to side plates, and the lower surface of the transparent plate is fixedly connected to the top of the slider.

[0013] Preferably, the inner wall on the left side of the transparent plate is fixedly connected with a headwind ring, the end of the headwind ring away from the transparent plate is fixedly connected with a closing scale, and the right surface of the headwind ring is fixedly connected with a pull rope.

[0014] Preferably, the end of the pull rope away from the upwind ring is fixedly connected to a block, the surface of the block is fixedly connected to a pull rod, and the end of the pull rod away from the block is fixedly connected to the bottom of the closing scale, wherein the upwind ring and the leftmost closing scale play a role in offsetting the impact of wind, while the other three closing scales play a role in relieving a large amount of wind force to prevent the wind from damaging the entire wind block.

[0015] Preferably, the splicing point includes a lower clamp, the upper surface of which is fixedly connected to the bottom of the perforated plate, and the bottom of the perforated plate is fixedly connected to an upper clamp, wherein the lower clamp and the upper clamp serve to increase stability, and the bottoms of the lower clamp and the upper clamp are both plugged into the upper surface of the bent plate.

[0016] The present invention provides a LED curtain wall splicing bracket. It has the following beneficial effects:

[0017] 1. The LED curtain wall splicing bracket continues to push the limit block 14 and compress the spring 15 through the wind blocker 17 until the spring 15 is compressed to an undeformable state and stops moving, so as to prevent wind from entering the entire device and relieve wind pressure.

[0018] Second, the LED curtain wall splicing bracket will rotate counterclockwise through the closing scale 178 connected to the headwind ring 171, allowing part of the wind to flow out along the surface of the leftmost closing scale 178 and the headwind ring 171 and block the rest of the wind, so as to offset the impact of wind.

[0019] 3. The LED curtain wall splicing bracket, through the counterclockwise rotation of the headwind ring 171 and the leftmost closing scale 178, causes the leftmost closing scale 178 to hit the adjacent closing scale 178, causing it to rotate counterclockwise and allow wind to blow through, wherein the leftmost closing scale 178 plays a role in blocking the wind, while the other three closing scales 178 play a role in relieving a large amount of wind force, preventing the wind force from damaging the entire wind blocker 17.

[0020] Fourth, the LED curtain wall splicing bracket, through part of the wind blowing out from the wind blocker 17 and along the bent plate 13 into the perforated plate 23, then a small part of the wind will be blown out from the center of the perforated plate 23 and finally hit the beam column 37, so that the wind force is dispersed.

[0021] 5. The LED curtain wall splicing bracket allows most of the wind force to enter the drainage bag 26 and be blown out from another opening of the drainage bag 26 and hit the LED screen 22 to achieve a cooling effect on the back of the LED screen 22.

[0022] 6. The LED curtain wall splicing bracket is bent by the lower clamping head 251 and the upper clamping head 252 and the force-bearing area between the bent plate 13 is increased to achieve the effect of increasing stability.

[0023] 7. The LED curtain wall splicing bracket, through the increase of the internal temperature of the device, makes the expansion ring 34 become larger, and the support rod 32 fixed on the surface of the expansion ring 34 will rotate with the rotation axis 33 as the center, so the LED screen 22 fixed on the other end of the support rod 32 will be deflected, so that the hot air will float out from the deflected gap to achieve the effect of heat dissipation.

[0024] 8. The LED curtain wall splicing bracket moves the collecting trough 5 downward and drives the bottom rod 41 fixed at the bottom thereof to move, and the folding rod 43 is connected to the bottom rod 41 through the side frame 42, so the folding rod 43 will push the connecting plate 44 to move downward, and the other end of the connecting plate 44 is connected to a protective body 45, and the surface of the protective body 45 is rotatably connected to the bottom plate 6, so the protective body 45 will rotate to close, so as to achieve the protection of the LED screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of an LED curtain wall splicing bracket of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the LED curtain wall splicing bracket of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the wind blocking device of the present invention;

[0028] Figure 4 It is a schematic diagram of the wind blocker structure of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the splicing device of the present invention;

[0030] Figure 6 This is a schematic diagram of the splicing point structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the ventilation device of the present invention;

[0032] Figure 8 It is a schematic diagram of the structure of the protective device of the present invention.

[0033] In the figure: 1, wind blocking device; 2, splicing device; 3, ventilation device; 4, protective device; 5, collecting tank; 6, bottom plate; 11, slider; 12, slide slot; 13, bent plate; 14, limit block; 15, spring; 16, rotating rod; 17, wind block; 171, headwind ring; 172, pull rope; 173, transparent plate; 174, pull bar; 175, straight plate; 176, side plate; 177, blocking block; 178. Closing scales; 21. Jigsaw panels; 22. LED screen; 23. Perforated plate; 25. Joint points; 26. Drainage bag; 251. Lower clamp; 252. Upper clamp; 31. Combined column; 32. Support rod; 33. Rotating shaft; 34. Expansion ring; 35. Air induction block; 36. Compression column; 37. Beam column; 41. Bottom rod; 42. Side frame; 43. Folding rod; 44. Connecting plate; 45. Protective body. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0035] like Figure 1-Figure 8 As shown, the present invention provides a technical solution: an LED curtain wall splicing bracket, comprising a wind blocking device 1, a splicing device 2, a ventilation device 3, a protective device 4, a collecting tank 5 and a bottom plate 6, wherein the two ends of the wind blocking device 1 are respectively fixedly connected to the surfaces of the splicing device 2 and the ventilation device 3, the bottom of the collecting tank 5 is fixedly connected to the top of the ventilation device 3, the top of the protective device 4 is fixedly connected to the bottom of the collecting tank 5, and the surface of the protective device 4 is rotatably connected to the surface of the bottom plate 6;

[0036] The wind blocking device 1 includes a bent plate 13, the left end of which is fixedly connected to the surface of the splicing device 2, the right end of which is fixedly connected to the surface of the ventilation device 3, the upper surface of the bent plate 13 is provided with a slide groove 12, the surface of the slide groove 12 is slidably connected with a slider 11, the top of the slider 11 is fixedly connected with a wind blocker 17, the upper surface of the right half of the bent plate 13 is fixedly connected with a spring 15, the end of the spring 15 away from the bent plate 13 is fixedly connected with a limiting block 14, the surface of the limiting block 14 is sleeved with a rotating rod 16, and the bottom of the limiting block 14 is fixedly connected to the upper surface of the bent plate 13; the limiting block 14 is continuously pushed and the spring 15 is compressed by the wind blocker 17 until the spring 15 is compressed to the point where it cannot be deformed and stops moving, so as to achieve the effect of blocking wind from entering the entire device.

[0037] The splicing device 2 includes an LED screen 22, the left end of which is fixedly connected to the surface of the ventilation device 3, a panel 21 is inserted at the center of the rear surface of the LED screen 22, an end of the panel 21 away from the LED screen 22 is fixedly connected to a perforated plate 23, a drainage bag 26 is fixedly connected to the right surface of the perforated plate 23, and a splicing point 25 is fixedly connected to the bottom of the perforated plate 23. When part of the wind is blown out from the wind blocker 17 and enters the perforated plate 23 along the curved plate 13, a small part of the wind will be blown out from the center of the perforated plate 23 and finally hit the beam 37, so that the wind force is dispersed, and most of the wind force enters the drainage bag 26, blows out from another opening of the drainage bag 26 and hits the LED screen 22.

[0038] The ventilation device 3 includes a beam column 37, the bottom of which is fixedly connected to the top of the bottom plate 6, the top of which is fixedly connected to a compression column 36, the top of which is fixedly connected to the bottom of the collecting tank 5, the surface of which is fixedly connected to an expansion ring 34 in a circular array, the surface of which is fixedly connected to an air induced block 35, the surface of which is fixedly connected to a strut 32, the bending portion of which is rotatably connected to a rotating shaft 33, the surface of which is fixedly connected to the surface of the puzzle board 21, the end of the strut 32 away from the expansion ring 34 is fixedly connected to the rear surface of the LED screen 22, and the left end of the LED screen 22 is fixedly connected to a merging column 31. As the temperature inside the device increases, the expansion ring 34 becomes larger, and the support rod 32 fixed on the surface of the expansion ring 34 rotates around the rotation axis 33, so that the LED screen 22 fixed on the other end of the support rod 32 deflects, causing hot air to float out from the deflected gap.

[0039] The protection device 4 includes a protection body 45, the surface of which is rotatably connected to the side of the bottom plate 6, a connecting plate 44 is fixedly connected to the upper surface of the protection body 45, a folding rod 43 is fixedly connected to the end of the connecting plate 44 away from the protection body 45, a side frame 42 is fixedly connected to the end of the folding rod 43 away from the protection body 45, a bottom rod 41 is fixedly connected to the end of the side frame 42 away from the folding rod 43, and the top of the bottom rod 41 is fixedly connected to the bottom of the collecting tank 5. The collecting tank 5 moves downward and drives the bottom rod 41 fixed at the bottom thereof to move, and the folding rod 43 is connected to the bottom rod 41 through the side frame 42, so the folding rod 43 will push the connecting plate 44 to move downward, and the other end of the connecting plate 44 is connected to the protection body 45, and the surface of the protection body 45 is rotatably connected to the bottom plate 6, so the protection body 45 will rotate to close.

[0040] The wind blocker 17 includes a transparent plate 173, the bottom of which is fixedly connected to a straight plate 175, the front and rear surfaces of the straight plate 175 are fixedly connected to side plates 176, the lower surface of the transparent plate 173 is fixedly connected to the top of the slider 11, the inner wall on the left side of the transparent plate 173 is fixedly connected to a headwind ring 171, the end of the headwind ring 171 away from the transparent plate 173 is fixedly connected to a closing scale 178, the right surface of the headwind ring 171 is fixedly connected to a pull rope 172, the end of the pull rope 172 away from the headwind ring 171 is fixedly connected to a blocking block 177, the surface of the blocking block 177 is fixedly connected to a pull strip 174, and the end of the pull strip 174 away from the blocking block 177 is fixedly connected to the bottom of the closing scale 178. The closing scale 178 connected to the headwind ring 171 will rotate counterclockwise, allowing part of the wind to flow out along the surface of the leftmost closing scale 178 and the headwind ring 171 and block the rest of the wind.

[0041] Through the counterclockwise rotation of the headwind ring 171 and the leftmost closing scale 178, the leftmost closing scale 178 will collide with the adjacent closing scale 178, causing it to rotate counterclockwise and allow wind to blow through.

[0042] The splicing point 25 includes a lower clamp 251, the upper surface of which is fixedly connected to the bottom of the perforated plate 23, and the bottom of which is fixedly connected to the upper clamp 252, and the bottoms of the lower clamp 251 and the upper clamp 252 are both plugged into the upper surface of the bent plate 13. The lower clamp 251 and the upper clamp 252 are bent and the force-bearing area between the bent plate 13 is increased.

[0043] When in use, strong wind blows onto the wind stopper 17, causing the slider 11 at the bottom of the wind stopper 17 to start moving inward along the slide groove 12 opened on the surface of the bent plate 13, so that the wind stopper 17 will shrink and bend inward, and will be resisted when it hits the limit block 14. If the resistance of the limit block 14 is greater than the thrust of the wind, the wind stopper 17 will stop moving. When the resistance of the limit block 14 is less than the thrust of the wind, the wind stopper 17 will continue to push the limit block 14 and compress the spring 15 until the spring 15 is compressed to the point where it cannot be deformed and stops moving, thereby preventing wind from entering the entire device and alleviating wind squeezing.

[0044] When excessive wind blows onto the blocking block 177 and the closing scales 178, where there are four closing scales 178 and they are all rotatably connected to the inner wall of the transparent plate 173, the blocking block 177 will move downward. At this time, the blocking block 177 will drive the pull rods 174 and the pull ropes 172 fixed on its surface. There are two pull rods 174, and the other ends of the two pull rods 174 are respectively connected to the right halves of the third closing scale and the fourth closing scale. Therefore, the third closing scale and the fourth closing scale will flip clockwise, allowing the wind to enter the transparent plate 173 through the gap. In addition, the other end of the pull rope 172 is connected to the headwind ring 171, so that the closing scales 178 connected to the headwind ring 171 will rotate counterclockwise, allowing part of the wind to flow out along the surface of the leftmost closing scale 178 and the headwind ring 171 and block the rest of the wind, so as to offset the impact of wind.

[0045] Through the counterclockwise rotation of the headwind ring 171 and the leftmost closing scale 178, the leftmost closing scale 178 will hit the adjacent closing scale 178, causing it to rotate counterclockwise and allow wind to blow through, among which the leftmost closing scale 178 plays a role in blocking the wind, while the other three closing scales 178 play a role in relieving a large amount of wind force, preventing the wind force from damaging the entire wind blocker 17.

[0046] Part of the wind is blown out from the wind blocker 17 and enters the perforated plate 23 along the bent plate 13. At this time, a small part of the wind will be blown out from the center of the perforated plate 23 and finally hit the beam 37, so that the wind force is dispersed, and most of the wind force will enter the drainage bag 26, and blow out from another opening of the drainage bag 26 and hit the LED screen 22, so as to achieve the cooling effect on the back of the LED screen 22.

[0047] The wind escaping from the wind blocker 17 hits the bent plate 13, so that the bent plate 13 is subjected to force and squeezes the lower clamp 251 and the upper clamp 252. At this time, the lower clamp 251 and the upper clamp 252 will bend and increase the force-bearing area between the bent plate 13, so as to achieve the effect of increasing stability.

[0048] As the temperature inside the device increases, the expansion ring 34 becomes larger, and the support rod 32 fixed on the surface of the expansion ring 34 rotates around the rotation axis 33, so the LED screen 22 fixed on the other end of the support rod 32 deflects, allowing hot air to float out from the deflected gap to achieve the effect of heat dissipation.

[0049] When rainwater falls into the collecting trough 5, the weight of the collecting trough 5 increases and squeezes the compression column 36 at the bottom thereof. At this time, the collecting trough 5 will move downward and drive the bottom rod 41 fixed at the bottom thereof to move. The folding rod 43 is connected to the bottom rod 41 through the side frame 42, so the folding rod 43 will push the connecting plate 44 to move downward. The other end of the connecting plate 44 is connected to a protective body 45, and the surface of the protective body 45 is rotatably connected to the bottom plate 6, so the protective body 45 will rotate to close, so as to protect the LED screen.

[0050] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An LED curtain wall splicing bracket, comprising a wind blocking device (1), a splicing device (2), a ventilation device (3), a protective device (4), a collecting tank (5) and a bottom plate (6), characterized in that: The two ends of the wind blocking device (1) are respectively fixedly connected to the surfaces of the splicing device (2) and the ventilation device (3); the bottom of the collecting trough (5) is fixedly connected to the top of the ventilation device (3); the top of the protective device (4) is fixedly connected to the bottom of the collecting trough (5); and the surface of the protective device (4) is rotatably connected to the surface of the bottom plate (6); The wind blocking device (1) comprises a bent plate (13), the left end of the bent plate (13) is fixedly connected to the surface of the splicing device (2), the right end of the bent plate (13) is fixedly connected to the surface of the ventilation device (3), the upper surface of the bent plate (13) is provided with a slide groove (12), the surface of the slide groove (12) is slidably connected to a slider (11), and the top of the slider (11) is fixedly connected to a wind blocker (17); A spring (15) is fixedly connected to the upper surface of the right half of the bent plate (13); one end of the spring (15) away from the bent plate (13) is fixedly connected to a limit block (14); a rotating rod (16) is sleeved on the surface of the limit block (14); and the bottom of the limit block (14) is fixedly connected to the upper surface of the bent plate (13); The splicing device (2) comprises an LED screen (22), the left end of the LED screen (22) is fixedly connected to the surface of the ventilation device (3), a puzzle board (21) is inserted at the center position of the rear surface of the LED screen (22), an end of the puzzle board (21) away from the LED screen (22) is fixedly connected to a perforated plate (23), a right surface of the perforated plate (23) is fixedly connected to a drainage bag (26), and a splicing point (25) is fixedly connected to the bottom of the perforated plate (23).

2. The LED curtain wall splicing bracket according to claim 1, characterized in that: The ventilation device (3) comprises a beam column (37), the bottom of the beam column (37) is fixedly connected to the top of the bottom plate (6), the top of the beam column (37) is fixedly connected to a compression column (36), the top of the compression column (36) is fixedly connected to the bottom of the collecting tank (5), the surface of the beam column (37) is fixedly connected to an expansion ring (34) in the form of a circumferential array, and the surface of the beam column (37) is fixedly connected to an air induction block (35).

3. The LED curtain wall splicing bracket according to claim 2, characterized in that: The surface of the expansion ring (34) is fixedly connected to a support rod (32), the bending portion of the support rod (32) is rotatably connected to a rotating shaft (33), the surface of the rotating shaft (33) is fixedly connected to the surface of the puzzle board (21), one end of the support rod (32) away from the expansion ring (34) is fixedly connected to the rear surface of the LED screen (22), and the left end of the LED screen (22) is fixedly connected to a merging column (31).

4. The LED curtain wall splicing bracket according to claim 1, characterized in that: The protective device (4) comprises a protective body (45), the surface of which is rotatably connected to the side surface of the bottom plate (6), the upper surface of which is fixedly connected to a connecting plate (44), the end of which away from the protective body (45) is fixedly connected to a folding rod (43), the end of which away from the protective body (45) is fixedly connected to a side frame (42), the end of which away from the folding rod (43) is fixedly connected to a bottom rod (41), and the top of which is fixedly connected to the bottom of the collecting tank (5).

5. The LED curtain wall splicing bracket according to claim 1, characterized in that: The wind blocker (17) comprises a transparent plate (173), the bottom of which is fixedly connected to a lateral plate (175), the front and rear surfaces of the lateral plate (175) are both fixedly connected to side plates (176), and the lower surface of the transparent plate (173) is fixedly connected to the top of the slider (11).

6. The LED curtain wall splicing bracket according to claim 5, characterized in that: The inner wall on the left side of the transparent plate (173) is fixedly connected to a headwind ring (171), one end of the headwind ring (171) away from the transparent plate (173) is fixedly connected to a closing scale (178), and the right surface of the headwind ring (171) is fixedly connected to a pull rope (172).

7. The LED curtain wall splicing bracket according to claim 6, characterized in that: One end of the pull rope (172) away from the headwind ring (171) is fixedly connected to a blocking block (177), a pull bar (174) is fixedly connected to the surface of the blocking block (177), and one end of the pull bar (174) away from the blocking block (177) is fixedly connected to the bottom of the closing scale (178).

8. The LED curtain wall splicing bracket according to claim 1, characterized in that: The splicing point (25) comprises a lower clamp (251), the upper surface of the lower clamp (251) is fixedly connected to the bottom of the perforated plate (23), the bottom of the perforated plate (23) is fixedly connected to an upper clamp (252), and the bottoms of the lower clamp (251) and the upper clamp (252) are both plugged into the upper surface of the bent plate (13).

Images