CN116941446A - An automatic irrigation road flower box with carbon dioxide reduction function - Google Patents

Abstract

The invention discloses an automatic irrigation road flower box with a carbon dioxide reducing function, which comprises a guardrail and an installation box, wherein the guardrail comprises a pair of support vertical rods, a rectangular frame is fixedly connected between the support vertical rods, a plurality of blocking plates are installed in the rectangular frame, the blocking plates are obliquely arranged, a mounting frame is installed at the bottom of the support vertical rods, adjusting pipes are movably inserted in the support vertical rods, and the installation box is installed between the adjusting pipes; compared with the prior art, when the water pump is connected to start running, clean water can be conveyed into the fixed pipe, the water pressure in the elastic pipe can change, the elastic pipe can be in a vertical and tight state, and the connecting shaft can be driven to move, so that the reset shaft moves, the elastic plate can be stretched and paved at the top end of a plant to play a role in sunshade, the sunshade effect can be achieved when water is irrigated and supplemented in noon in summer, the condition that the plant is dead by sun is reduced, and the survival rate of the plant is guaranteed.

Description

An automatic irrigation road flower box with carbon dioxide reduction function

Technical field

The invention relates to the technical field of road flower boxes, specifically an automatic irrigation road flower box with a carbon dioxide reduction function.

Background technique

With the progress of social civilization and economic development, by placing flower boxes on urban roads, municipal departments can not only absorb harmful gases in the air, release oxygen, and purify the air, but also decorate and beautify the environment.

However, the flower boxes need to be watered by sanitation personnel. Generally, the flower boxes on the roadside are watered by sprinklers and other equipment. However, this watering method cannot guarantee even watering, resulting in easy plant death, and subsequent replenishment is required. , and in the case of summer exposure, sanitation personnel need to lay a sunshade net to reduce the occurrence of internal plants being sunburned to death, which requires a lot of labor costs to maintain. For this reason, we propose a carbon dioxide reduction function Automatic irrigation road flower boxes are used to solve the above problems.

Contents of the invention

The purpose of the present invention is to provide an automatic irrigation road flower box with the function of reducing carbon dioxide, so as to solve the problems raised in the above background technology.

In order to achieve the above object, the present invention provides the following technical solution: an automatic irrigation road flower box with a carbon dioxide reduction function, including a guardrail and an installation box. The guardrail includes a pair of support vertical poles, and the support vertical poles are fixedly connected with each other. Rectangular frame, a plurality of blocking plates are installed inside the rectangular frame, the blocking plates are arranged in an inclined manner, a mounting bracket is installed at the bottom of the supporting vertical rod, and an adjustment tube is movablely inserted inside the supporting vertical rod, and the installation The box is installed between the regulating pipes, the side walls at both ends of the rectangular frame are fixedly connected with welding frames, and a connecting water tank is installed on the welding frame;

A blocking mechanism is installed on the top of the side wall of the installation box. A pair of fixed pipes are fixedly connected to the inner wall of the installation box. The fixed pipes are arranged symmetrically. A plurality of auxiliary irrigation mechanisms are installed on the surface of the fixed pipes. The connecting water tank A fixed water pump is installed inside, and a transmission pipe is installed on the fixed water pump. The transmission pipe is connected with the fixed pipe. The guardrail is installed between the roads, and the water stored in the connecting water tank can be transmitted to the inside of the fixed pipe through the connecting water pump. When the shading mechanism and the auxiliary irrigation mechanism are used, not only can the plants inside the installation box be quickly irrigated, but also the elastic panels can be used to shade the plants, preventing the plants from being sunburned to death, and ensuring the survival rate of the plants.

Preferably, a pair of limiting partitions are installed at the bottom of the inner wall of the installation box. The limiting partitions are located directly below the fixed pipe. The limiting partitions are hollow. The top of the inner wall of the limiting partitions is engaged with a Grid board, a plurality of drainage channels are provided on the side of the limit partition away from the side wall of the installation box, an absorbent sponge is installed inside the limit partition, and a separation box is installed between the limit partitions , the separation boxes are arranged in a uniform array inside the installation box. During the irrigation process, the excess water flow can be transmitted along the grid plate to the inside of the sponge board, which can play a storage role and allow it to enter the soil from the drainage channel. internal.

Preferably, the separation box includes a fixed bottom plate, which is clamped at the bottom of the inner wall of the installation box. A plurality of plastic support plates are fixedly connected to the side walls of the fixed bottom plate, and the top of the plastic support plate is fixedly connected to the limiting frame. U-shaped plates are fixedly connected to the side walls at both ends of the limit frame. The position of the U-shaped plate is higher than the soil surface. An anti-slip pad is fixedly connected to the inner wall of the U-shaped plate. When insect damage occurs through the plants, it can Quickly pull out the separation box on one side and replace it with other plants to facilitate adjustment and maintenance by environmental sanitation personnel.

Preferably, the shielding mechanism includes an adjustment frame, a limit slot is provided at the top of the side wall of the installation box, the adjustment frame is inserted inside the limit slot, and a through slot is provided at the top of the adjustment frame, and the through slot is provided at the top of the adjustment frame. Limiting plates are fixedly connected between the inner walls of the groove, and elastic plates are fixedly connected on both sides of the limiting plates;

A reset shaft is movably inserted at the bottom of the adjustment frame, and the reset shaft is in a "U" shape. One end of the reset shaft is fixedly connected to a connecting shaft, and both ends of the connecting shaft are fixedly connected to snap rings. The connecting shaft The top is fixedly connected to one end of the elastic plate, and the movement of the connecting shaft causes the reset axis to move, which allows the elastic plate to stretch and be laid on the top of the plant to provide sunshade. It can also provide sunshade for irrigation and water replenishment at noon in summer. .

Preferably, a plurality of tee pipes are installed on the fixed pipe, the positions of the tee pipes and the adjustment frame are staggered, a plastic pipe is inserted at the top of the tee pipe, and a pair of plastic pipes are fixedly connected to the top of the plastic pipe. Elastic tube, the top of the elastic tube is fixedly connected with a snap ball, and the snap ball is clamped inside the snap ring. When the water pump starts to operate, clean water can be transported to the inside of the fixed tube, and the water pressure inside the elastic tube It can change and make the elastic tube in a vertical and tight state, thereby driving the connecting shaft to move.

Preferably, the auxiliary irrigation mechanism includes a limiter tube, the limiter tubes are arranged in a uniform array on a fixed tube, a plurality of rubber tubes are fixedly connected to the fixed tube, and a connection is fixedly connected to the limiter tube. ring, a drainage plate is installed on the connecting ring, the drainage plate and the rubber pipe are connected with each other, and the water flow is quickly discharged along the drainage plate. The conductive plate can rotate with the impact of the water flow, allowing the water flow to follow the annular groove. Spraying quickly everywhere can quickly irrigate plants from multiple angles.

Preferably, a plurality of fixed frames are fixedly connected to the limiting tube, a limiting shaft is fixedly connected to the fixed frame, a rotating disk is provided for rotation on the limiting shaft, and an annular groove is provided on the rotating disk. The position of the annular groove corresponds to the top of the drainage plate, a plurality of conductive plates are fixedly connected to the inner wall of the annular groove, and the conductive plates are arranged obliquely inside the annular groove;

An elastic ring is fixedly connected to the conductive plate. A plurality of swing balls are fixedly connected to the surface of the elastic ring. A through hole is provided inside the swing ball. A rubber sheet is fixedly connected to the inner wall of the through hole. The rubber A tapered tube is fixedly connected to the bottom of the plate. During the rotation of the rotating plate, the water flow can impact the inside of the through hole, causing the tapered tube to deform, and the inside of the drainage plate can be cleaned as the rotating plate rotates.

Compared with the prior art, the beneficial effects of the present invention are:

1. When the present invention starts to operate by connecting the water pump, it can transport clean water to the inside of the fixed pipe, and the water pressure inside the elastic pipe can change, which can make the elastic pipe in a vertical and tight state, thereby driving the connecting shaft to move. This allows the reset axis to move, allowing the elastic plate to stretch and be laid on the top of the plant to provide sunshade. It can also provide sunshade for irrigation and water replenishment at noon in the summer, reduce the occurrence of sunburn of the plant, and ensure the survival rate of the plant. ;

2. In the present invention, the water flow is quickly discharged along the drainage plate. The conductive plate can rotate in response to the impact of the water flow, allowing the water flow to quickly spray along the annular groove. It can quickly irrigate plants from multiple angles and reduce watering. Omissions occurred during the water process;

3. In the present invention, excess water flow during the irrigation process can be transmitted along the grid plate to the interior of the sponge plate, which can play a storage role and allow it to enter the soil from the drainage channel to ensure that the roots at the bottom can absorb enough water to ensure the survival rate of plants;

4. During the rotation of the rotating disk, the present invention can make the water flow impact the inside of the through hole, deform the tapered pipe, and clean the inside of the drainage plate as the rotating disk rotates, reducing clogging during the irrigation process. Case;

5. When insect damage occurs to a plant, the present invention can directly pull out the separation box on one side quickly and replace it with another plant, which facilitates environmental sanitation personnel to adjust and maintain the plant, and reduces the further spread of insect damage.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a partially enlarged structural schematic diagram of position A in Figure 1 of the present invention;

Figure 3 is a partially enlarged structural schematic diagram of B in Figure 1 of the present invention;

Figure 4 is a schematic diagram of the auxiliary irrigation structure of the present invention;

Figure 5 is a schematic cross-sectional structural diagram of the swing ball of the present invention;

Figure 6 is a schematic diagram of the bottom structure of the adjustment frame of the present invention;

Figure 7 is a schematic diagram of the internal structure of the installation box of the present invention;

In the picture: 1. Guardrail; 2. Installation box; 3. Shielding mechanism; 4. Auxiliary irrigation mechanism; 5. Separation box; 11. Support vertical rod; 12. Installation frame; 13. Rectangular frame; 14. Blocking plate; 15 , connect the water tank; 16. Transmission pipe; 17. Adjustment pipe; 21. Fixed pipe; 22. Limiting partition; 23. Grid plate; 24. Drainage groove; 25. Tee pipe; 26. Plastic pipe; 261. Elastic tube; 31. Adjustment frame; 32. Through groove; 33. Reset shaft; 34. Elastic plate; 35. Connecting shaft; 351. Snap ring; 41. Limiting tube; 42. Fixing frame; 421. Limiting shaft ; 43. Rotating disk; 44. Annular groove; 441. Conductive plate; 45. Elastic ring; 451. Swinging ball; 46. Connecting ring; 47. Drainage plate; 48. Through hole; 481. Rubber sheet; 482. Tapered Pipe; 51. Limiting frame; 52. Fixed bottom plate; 53. U-shaped plate.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Please refer to Figures 1-7. The present invention provides a technical solution: an automatic irrigation road flower box with a carbon dioxide reduction function, including a guardrail 1 and an installation box 2. The guardrail 1 includes a pair of supporting vertical poles 11. The supporting vertical poles 11 There is a rectangular frame 13 fixedly connected between the rectangular frame 13. A plurality of blocking plates 14 are installed inside the rectangular frame 13. The blocking plates 14 are arranged in an inclined manner. A mounting frame 12 is installed at the bottom of the supporting vertical rod 11. An adjusting tube 17 is movablely inserted inside the supporting vertical rod 11. , the installation box 2 is installed between the regulating pipes 17, the side walls of the rectangular frame 13 are fixedly connected with welding frames at both ends, and the connecting water tank 15 is installed on the welding frame;

A shielding mechanism 3 is installed on the top of the side wall of the installation box 2. A pair of fixed pipes 21 are fixedly connected to the inner wall of the installation box 2. The fixed pipes 21 are arranged symmetrically. A plurality of auxiliary irrigation mechanisms 4 are installed on the surface of the fixed pipe 21, and a connecting water tank 15 is installed inside. There is a fixed water pump, and a transmission pipe 16 is installed on the fixed water pump. The transmission pipe 16 and the fixed pipe 21 are connected. The guardrail 1 is installed between the roads, and the water stored in the connecting water tank 15 can be transmitted to the inside of the fixed pipe 21 through the connecting water pump. , under the action of the shielding mechanism 3 and the auxiliary irrigation mechanism 4, not only can the plants inside the installation box 2 be quickly irrigated, but also the elastic plate 34 can be used to shade the plants to avoid the plants from being sunburned to death, and ensure the survival of the plants. Rate.

A pair of limiting partitions 22 are installed at the bottom of the inner wall of the installation box 2. The limiting partitions 22 are located directly below the fixed pipe 21. The limiting partitions 22 are hollow, and a grid plate 23 is engaged with the top of the inner wall of the limiting partitions 22. A plurality of drainage channels 24 are provided on the side of the limit partition 22 away from the side wall of the installation box 2. An absorbent sponge is inserted inside the limit partition 22. A separation box 5 is installed between the limit partitions 22. The separation box 5 Arranged in a uniform array inside the installation box 2, excess water flow during the irrigation process can be transmitted to the inside of the sponge board along the grid plate 23, which can play a storage role and allow it to enter the soil from the drainage channel 24. Ensure that the roots at the bottom can absorb enough water to ensure the survival rate of the plant.

The separation box 5 includes a fixed bottom plate 52, which is clamped at the bottom of the inner wall of the installation box 2. A plurality of plastic support plates are fixedly connected to the side walls of the fixed bottom plate 52, and the top of the plastic support plate is fixedly connected to a limiting frame 51, which is U-shaped plates 53 are fixedly connected to the side walls at both ends of 51. The position of U-shaped plate 53 is higher than the soil surface. Anti-slip pads are fixedly connected to the inner wall of U-shaped plate 53. When insect damage occurs through the plants, one side of the U-shaped plate 53 can be directly removed. The separation box 5 can be quickly pulled out and replaced with other plants, which facilitates sanitation personnel to adjust and maintain the plant and reduce the further spread of pests.

The blocking mechanism 3 includes an adjusting frame 31. A limited slot is provided on the top of the side wall of the installation box 2. The adjusting frame 31 is inserted inside the limiting slot. A through slot 32 is provided on the top of the adjusting frame 31. The fixed connection between the inner walls of the through slot 32 is limited. The positioning plate has elastic plates 34 fixedly connected to both sides of the positioning plate;

A reset shaft 33 is movably inserted at the bottom of the adjusting frame 31. The reset shaft 33 is in a "U" shape. One end of the reset shaft 33 is fixedly connected to a connecting shaft 35. Both ends of the connecting shaft 35 are fixedly connected to snap rings 351. The top of the connecting shaft 35 is connected to One end of the elastic plate 34 is fixedly connected, and movement occurs through the connecting shaft 35, thereby causing the reset shaft 33 to move, which can stretch the elastic plate 34 and lay it on the top of the plants to provide sunshade and provide irrigation and water replenishment at noon in summer. The sunshade effect reduces the occurrence of sun-death of plants and ensures the survival rate of plants.

A plurality of tee pipes 25 are installed on the fixed pipe 21. The positions of the tee pipes 25 are staggered with the adjustment frame 31. A plastic pipe 26 is inserted at the top of the tee pipe 25. A pair of elastic pipes 261 are fixedly connected to the top of the plastic pipe 26. A snap ball is fixedly connected to the top of the elastic tube 261, and the snap ball is clamped inside the snap ring 351. When the water pump starts to operate, clean water can be transported to the inside of the fixed tube 21, and the water pressure inside the elastic tube 261 can When the elastic tube 261 changes, the elastic tube 261 can be vertically tightened, thereby driving the connecting shaft 35 to move.

The auxiliary irrigation mechanism 4 includes a limiting tube 41. The limiting tubes 41 are arranged in a uniform array on the fixed tube 21. A plurality of rubber tubes are fixedly connected to the fixed tube 21. The limiting tube 41 is fixedly connected to a connecting ring 46. The connecting ring There is a drainage plate 47 installed on 46. The drainage plate 47 and the rubber pipe are connected with each other. The water flow is quickly discharged along the drainage plate 47. The conductive plate 441 can rotate with the impact of the water flow and can make the water flow quickly along the annular groove 44. Spraying can quickly irrigate plants from multiple angles and reduce omissions during the watering process.

A plurality of fixed brackets 42 are fixedly connected to the limiting tube 41, and a limiting shaft 421 is fixedly connected to the fixed frame 42. A rotating disk 43 is rotatably provided on the limiting shaft 421, and an annular groove 44 is provided on the rotating disk 43. The annular groove 44 The position corresponds to the top of the drainage plate 47. A plurality of conductive plates 441 are fixedly connected to the inner wall of the annular groove 44, and the conductive plates 441 are arranged obliquely inside the annular groove 44;

An elastic ring 45 is fixedly connected to the conductive plate 441. A plurality of swing balls 451 are fixedly connected to the surface of the elastic ring 45. A through hole 48 is provided inside the swing ball 451. A rubber sheet 481 is fixedly connected to the inner wall of the through hole 48. The rubber sheet 481 A tapered tube 482 is fixedly connected to the bottom. During the rotation of the rotating plate 43, the water flow can impact the inside of the through hole 48, causing the tapered tube 482 to deform, and the drainage plate 47 can be affected by the rotation of the rotating plate 43. Clean the inside to reduce clogging during irrigation.

Working principle: First, the guardrail 1 is installed between the roads, and the water stored in the connecting water tank 15 can be transferred to the inside of the fixed pipe 21 through the connecting water pump. Under the action of the shielding mechanism 3 and the auxiliary irrigation mechanism 4, not only can the installation box be 2. The plants inside can be irrigated quickly, and can also be shaded with the help of the elastic plate 34 to avoid the plants from being sunk to death, which can ensure the survival rate of the plants. When the connected water pump starts to operate, clean water can be delivered to the fixed pipe 21 inside, and the water pressure inside the elastic tube 261 can change, which can make the elastic tube 261 in a vertically tight state, thereby driving the connecting shaft 35 to move, thereby causing the reset shaft 33 to move, and allowing the elastic plate 34 to stretch. It is laid on the top of the plants to provide sunshade. It can be irrigated and replenished at noon in summer and has a sunshade effect at the same time, reducing the death of plants from the sun and ensuring the survival rate of plants;

Then when the plants need to be irrigated, the water can be quickly discharged along the drainage plate 47. The conductive plate 441 can rotate in response to the impact of the water flow, allowing the water to be sprayed quickly along the annular groove 44, and can be sprayed from multiple locations. Rapid irrigation of plants from an angle can reduce omissions during the watering process, and as the excess water flow can be transmitted to the inside of the sponge board along the grid plate 23, it can play a storage role and enable it to be discharged from the drain. The water tank 24 enters the soil to ensure that the roots at the bottom can absorb enough water and ensure the survival rate of the plants. As the rotating disk 43 rotates, the water flow can impact the inside of the through hole 48, allowing the tapered tube to 482 deforms, it can clean the inside of the drainage plate 47 as the rotating disk 43 rotates, reducing clogging during the irrigation process;

Finally, when pests appear on plants, the separation box 5 on one side can be quickly pulled out and replaced with other plants, which facilitates environmental sanitation personnel to adjust and maintain the plants and reduce further spread of pests.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. An automatic irrigation road flower box with the function of reducing carbon dioxide, including a guardrail (1) and an installation box (2), characterized in that: the guardrail (1) includes a pair of support vertical bars (11), and the support A rectangular frame (13) is fixedly connected between the vertical poles (11). A plurality of blocking plates (14) are installed inside the rectangular frame (13). The blocking plates (14) are arranged at an angle, and the supporting vertical rods (13) are installed at an angle. 11) An installation frame (12) is installed at the bottom, an adjustment tube (17) is movably inserted inside the support vertical rod (11), the installation box (2) is installed between the adjustment tubes (17), the rectangular Welding frames are fixedly connected to the side walls at both ends of the frame (13), and a connecting water tank (15) is installed on the welding frame; A shielding mechanism (3) is installed on the top of the side wall of the installation box (2), and a pair of fixed tubes (21) are fixedly connected to the inner wall of the installation box (2). The fixed tubes (21) are symmetrically arranged, and the fixed tubes (21) are symmetrically arranged. A plurality of auxiliary irrigation mechanisms (4) are installed on the surface of the pipe (21), a fixed water pump is installed inside the connecting water tank (15), and a transmission pipe (16) is installed on the fixed water pump, and the transmission pipe (16) and The fixed pipe (21) is connected. 2. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 1, characterized in that: a pair of limiting partitions (22) are installed at the bottom of the inner wall of the installation box (2), and the limiting partitions The partition (22) is located directly below the fixed pipe (21). The limiting partition (22) is hollow, and a grid plate (23) is engaged with the top of the inner wall of the limiting partition (22). A plurality of drainage channels (24) are provided on the side of the limit partition (22) away from the side wall of the installation box (2). An absorbent sponge is stuck inside the limit partition (22). The limit partition (22) is provided with an absorbent sponge. A separation box (5) is installed between (22), and the separation box (5) is arranged in a uniform array inside the installation box (2). 3. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 2, characterized in that: the separation box (5) includes a fixed bottom plate (52), and the fixed bottom plate (52) is clamped on At the bottom of the inner wall of the installation box (2), a plurality of plastic support plates are fixedly connected to the side walls of the fixed bottom plate (52), and the top of the plastic support plate is fixedly connected to a limit frame (51). Both sides of the limit frame (51) U-shaped plates (53) are fixedly connected to the end and side walls. The position of the U-shaped plate (53) is higher than the soil surface. An anti-slip pad is fixedly connected to the inner wall of the U-shaped plate (53). 4. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 1, characterized in that: the blocking mechanism (3) includes an adjusting frame (31), and the top of the side wall of the installation box (2) A limited slot is provided, and the adjustment frame (31) is inserted inside the limit slot. A through slot (32) is provided at the top of the adjustment frame (31), and the fixed connection between the inner walls of the through slot (32) is limited. The positioning plate has elastic plates (34) fixedly connected to both sides of the positioning plate; A reset shaft (33) is movably inserted at the bottom of the adjustment frame (31). The reset shaft (33) is in a "U" shape. One end of the reset shaft (33) is fixedly connected with a connecting shaft (35). Snap rings (351) are fixedly connected to both ends of the connecting shaft (35), and the top of the connecting shaft (35) is fixedly connected to one end of the elastic plate (34). 5. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 1, characterized in that: the fixed pipe (21) is equipped with a plurality of three-way pipes (25), and the three-way pipes (25) is staggered with the adjusting frame (31). A plastic pipe (26) is inserted at the top of the tee pipe (25). A pair of elastic pipes (261) are fixedly connected to the top of the plastic pipe (26). A snap ball is fixedly connected to the top of the elastic tube (261), and the snap ball is clamped inside the snap ring (351). 6. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 1, characterized in that: the auxiliary irrigation mechanism (4) includes a limiting pipe (41), and the limiting pipe (41) It is arranged on the fixed tube (21) in a uniform array. A plurality of rubber tubes are fixedly connected to the fixed tube (21). A connecting ring (46) is fixedly connected to the limiting tube (41). The connecting ring A drainage plate (47) is installed on (46), and the drainage plate (47) and the rubber pipe penetrate each other. 7. An automatic irrigation road flower box with carbon dioxide reduction function according to claim 6, characterized in that: the limiting pipe (41) is fixedly connected with a plurality of fixing brackets (42), and the fixing brackets (42) is fixedly connected with a limiting shaft (421), a rotating disk (43) is provided on the limiting shaft (421), and an annular groove (44) is provided on the rotating disk (43). The position of the groove (44) corresponds to the top of the drainage plate (47). A plurality of conductive plates (441) are fixedly connected to the inner wall of the annular groove (44). The conductive plates (441) are arranged at an angle in the annular groove (44). internal; An elastic ring (45) is fixedly connected to the conductive plate (441). A plurality of swing balls (451) are fixedly connected to the surface of the elastic ring (45). There are through holes (451) inside the swing balls (451). 48), a rubber sheet (481) is fixedly connected to the inner wall of the through hole (48), and a tapered tube (482) is fixedly connected to the bottom of the rubber sheet (481).