CN108328077A - Box for material circulation for transporting potting - Google Patents

Abstract

The present invention relates to a kind of box for material circulation for transporting potting, the box for material circulation contains inside and outside babinet, potting is housed inside internal box, the babinet top and the bottom that outer case contains are fixed together by the first hasp lock, the inner surface of outer case is spherical surface, the bottom basin and upper cover that internal box contains are fixed together by the second hasp lock, the lower surface periphery of bottom basin is uniformly provided with the first universal wheel, the upper surface periphery of upper cover is uniformly provided with the second universal wheel, internal box is only contacted by the surface of the first and second universal wheel idler wheels with the inner surface of outer case, potting is placed in bottom basin, it is uniformly provided with compressed spring and cambered plate between the medial surface of bottom basin and the lateral surface of planting pot, under the action of compressed spring, the inner concave of cambered plate and the lateral surface of planting pot are in close contact, planting pot it is suitable for reading on be covered with circular breast boards；The present invention can make it remain normal condition straight up in potting transportational process, ensure that the survival rate and economic benefit of potting.

Description

Logistics box for transporting potted plants

(1) Technical field:

The invention relates to a logistics box, in particular to a logistics box for transporting potted plants.

(two), background technology:

With the development of society and economy, people's material and cultural living standards are improving day by day, and the logistics industry has developed fully. Logistics boxes are widely used in various industries for cargo transportation, delivery etc. With the development of the Internet, economic and trade activities have become more frequent. With the help of online shopping platforms, people can buy their favorite treasures without leaving home. Northerners began to buy green plants in the south, and southerners also thought about how to cultivate fruit trees in the north. More and more people prefer to buy potted plants online, and then use express logistics to transport them. But potted plants are essentially different from other items such as clothing, books or daily necessities. Potted plants are living plants that are planted in the pot soil. The pots are usually made of clay pots or ceramic pots. Broken, potted leaves will fall off after collision.

The transportation of existing potted plants is generally open transportation and boxed transportation; open transportation means that the potted plants are directly placed in an open truck compartment for transportation, and are extremely vulnerable to severe damage due to severe weather such as wind and snow during transportation; or The potted plants may be knocked over due to the bumping of the vehicle and the overturning of other goods during transportation, the pots will be squeezed and collided, the potted soil will be dumped, and the potted plants will be damaged, resulting in economic losses; in addition, open transportation takes up a lot of space and is inconvenient to carry; packing and transportation Usually paper, wooden or steel logistics boxes are used. When mailing, the plants are first dug out of the pot, and part of the soil on the roots of the plants is removed, and then the roots are wrapped in plastic bags, and then the plants are put into the logistics box. This will often cause the lack of oxygen or malnutrition of the plant root system due to the lack of ecological environment, and the leaves will wither and turn yellow, which will affect the normal growth of the plant and make the time for slowing down the seedlings longer. If the transportation time is longer, it will threaten the life of the plant; Put the whole potted plant into the logistics box first, and then fill the potted plants with paper scraps, foam materials, corrugated paper and other cushioning objects to fix them. However, the particularity of the live potted plant transportation process has not been well considered. In the process of transportation or loading and unloading, it is inevitable that they will be turned upside down, placed horizontally, dropped or collided, causing the potted plants, soil, etc. to inevitably shift or even fall, causing the roots of the potted plants to be injured, the branches broken or the leaves to fall off , reducing plant survival.

(3) Contents of the invention:

The technical problem to be solved by the present invention is to provide a logistics box for transporting potted plants, which can keep the potted plants in a vertical and upward normal state during the process of transporting potted plants, and the potted plants can be fixed safely and reliably in the logistics box , to ensure the survival rate and economic benefits of potted plants.

Technical scheme of the present invention:

A logistics box for transporting potted plants, comprising an outer box body and an inner box body, the inner box body is arranged inside the outer box body, potted plants are installed inside the inner box body; the outer box body includes an upper box body and a lower box body body, the box body The upper part of the box body and the lower part of the box body are fixedly connected together by M first hasp locks, and the M first hasp locks are evenly distributed at the junction of the upper part of the box body and the lower part of the box body. The inner surface of the outer box body is spherical; The box body contains a bottom basin and an upper cover, and the bottom basin and the upper cover are fixedly connected together by N second hasp locks, and the N second hasp locks are evenly distributed at the connection between the bottom basin and the upper cover, and the bottom of the bottom basin P first universal wheels are uniformly arranged around the surface, the wheel bases of the P first universal wheels are fixedly connected with the lower surface of the bottom basin, Q second universal wheels are uniformly arranged around the upper surface of the upper cover, and Q The wheel seats of the second universal wheels are fixedly connected with the upper surface of the upper cover, and the inner box is only connected to the outer box by the surface of the rollers of the P first universal wheels and the surface of the rollers of the Q second universal wheels. The inner surface of the potted plant is in contact with the inner surface; the planting pot at the lower part of the potted plant is placed in the bottom pot, the green plant at the upper part of the potted plant is covered in the upper cover, and S compression springs are evenly arranged between the inner side of the bottom pot and the outer side of the planting pot, each One end of a compression spring is fixedly connected to the inner surface of the bottom pot, and the other end is fixedly connected to the middle part of the outer convex surface of an arc panel. The shape of the inner concave surface of the arc panel matches the shape of the outer surface of the planting pot. Below, the inner concave surface of the arc panel is in close contact with the outer surface of the planting pot; the upper opening of the planting pot is covered with a circular soil retaining plate, the outer diameter of the earth retaining plate is larger than the outer diameter of the upper opening of the planting pot, and the upper opening of the soil retaining plate The middle part of the surface is provided with a first through hole, the stem of the green plant passes through the first through hole, and the soil retaining plate is divided into two identical sub-boards along its diameter direction, and the straight sides of the two sub-boards are respectively There are upper flanges corresponding to each other, and the upper flange surfaces of the two sub-plates are respectively provided with at least two second through holes corresponding to each other, connecting bolts are installed in the second through holes, and the two sub-plates are connected by Bolts are fixedly connected together to form a soil retaining board; the soil retaining board is connected to the inner bottom surface of the bottom basin through T fixed ropes, and T holes for threading the rope are uniformly arranged around the upper surface of the soil retaining board, and the inner bottom surface of the bottom basin is evenly fixed There are T pull rings, one end of the T fixed ropes is respectively fixedly connected with the T pull rings, and the other ends of the T fixed ropes pass through the T rope holes respectively and then tightened and fastened to the rope holes; M and N is a natural number greater than or equal to 2, and P, Q, S, and T are all natural numbers greater than or equal to 3.

The box wall of the outer box is a hollow structure, the connection between the upper part of the box and the lower part of the box is a tongue and groove, and M first hasp locks are installed on the outer surface of the outer box; the connection between the bottom basin and the upper cover is a groove. mouth, and N second hasp locks are installed on the outer surface of the inner box body.

The inner surface of the outer box is a smooth spherical surface. This smooth spherical surface refers to the spherical surface that the roller of the first universal wheel and the roller of the second universal wheel can roll without hindrance on this spherical surface. The surface roughness of the inner surface is Ra is preferably less than or equal to 0.8 μm; the hooks of the M first hasp locks are fixedly connected to the outer surface of the upper part of the box body, and the latches of the M first hasp locks are fixedly connected to the outer surface of the lower part of the box body ; The hooks of the N second hasp locks are fixedly connected to the outer surface of the upper cover, and the latches of the N second hasp locks are fixedly connected to the outer surface of the bottom basin.

The rollers of the first universal wheel and the second universal wheel are all spherical rollers installed in the ball bowl of the wheel seat, and the spherical rollers are in point contact with the inner surface of the outer box; the upper part of the box and the lower part of the box pass through the outer box After the M first hasp locks are fixedly connected together, the gap formed by the connection on the inner surface of the outer box is less than or equal to 1/5 of the diameter of the smallest spherical roller.

The shape of the outer box is cube-shaped, the connection between the upper part of the box and the lower part of the box is located in the middle of the outer box, and the inner cavity of the outer box wall is filled with fillers; the shape of the inner box is upper small and lower Big drum shape; the outer surface of the outer box is provided with ventilation holes, and the outer surface of the inner box is also provided with ventilation holes.

The middle part of the six outer sides of the outer box is respectively provided with four ventilation holes, and the outer side of the inner box is provided with eight ventilation holes, and the aperture of the ventilation holes is less than or equal to 1/5 of the diameter of the smallest spherical roller.

The outer box body and the inner box body are made of engineering plastics; the filler is made of lightweight foamed plastic or lightweight foamed rubber.

M, N, P, Q, S and T are all 4.

On the retaining plate, the second through holes are distributed on both sides of the first through holes.

Beneficial effects of the present invention:

1. In the present invention, P first universal wheels are evenly arranged on the lower surface of the bottom basin of the inner box of the present invention, Q second universal wheels are evenly arranged on the upper surface of the upper cover, and the inner surface of the outer box is a spherical surface. , the inner box is only in contact with the inner surface of the outer box through the surfaces of the rollers of P first universal wheels and the rollers of Q second universal wheels. During the potted plant transportation or moving process, when the outer box When the body tilts, the balance state of the inner box is broken. Since the lower part of the potted plant has planting pots, roots, soil and the water contained therein, the sum of its weight is far greater than the weight of the green plants on the upper part of the potted plant. Under the action, the first universal wheel on the lower surface of the bottom basin of the inner box will slide downward along the inner surface of the outer box, and the second universal wheel on the upper surface of the upper cover of the inner box will slide along the inner surface of the outer box. The inner surface of the inner box slides upwards until the inner box reaches a stable equilibrium state again, that is, the inner box is vertical, and the potted plants are always in a normal state of vertical upwards, which can ensure that the potted plants will not be bumped by vehicles during transportation. The outer box is damaged due to the influence of moving, etc., and the potted plants are installed in the logistics box, which can also be protected from the influence of bad weather. The potted plants do not need to slow down the seedlings or the time for slowing down the seedlings is greatly shortened, which ensures the survival rate of the potted plants. and economic benefits.

2. The connection between the upper part of the box body and the lower part of the box body of the present invention is a tongue and groove. After the potted plant is put into the inner box body, the upper part of the box body and the lower part of the box body are easily snapped together, and the upper part of the box body and the lower part of the box body The M first hasp locks are fixedly connected to form a seamless whole, and the inner surface of the outer box becomes a complete spherical surface, which ensures that the universal wheels on the upper and lower surfaces of the inner box can slide smoothly on the inner surface of the outer box , thus laying the foundation for the safe transportation of potted plants.

3. S compression springs and arc panels are evenly arranged between the inner side of the inner box bottom basin of the present invention and the outer side of the planting pot, and the shape of the inner concave surface of the arc panel matches the shape of the outer side of the planting pot, so that the planting The upper opening of the pot is covered with a circular soil retaining plate, the outer diameter of which is greater than the outer diameter of the upper opening of the planting pot, and the soil retaining plate is connected with the inner bottom surface of the bottom basin through T root fixed ropes. Under the joint action of compression springs, arc panels, soil retaining panels and fixed ropes, even if the potted plants are tilted, the planting pots will be firmly fixed in the bottom of the inner box without displacement or even falling due to tilting. The pot is broken, the root of the potted plant is injured, the branches are broken and damaged, and the pot soil is dumped out of the pot, thus ensuring that the ecological environment required for the normal growth of the potted plant will not be affected.

4. The middle part of the six outer sides of the outer box of the present invention is respectively provided with four ventilation holes, and the outer side of the inner box is provided with eight ventilation holes. During the process of transporting potted plants, the inner box can still pass through The ventilation holes exchange air with the outside of the box to meet the air needs of the potted plants during transportation.

5. The inner cavity of the outer box wall of the present invention is filled with lightweight foamed plastics or lightweight foamed rubber. Once the box is squeezed, dropped or collided during the transportation of potted plants, it will To buffer, to ensure the relative integrity of the box, so that potted plants from damage.

(4) Description of drawings:

Fig. 1 is the structural representation of the logistics box for transporting potted plants;

Fig. 2 is a top view structural schematic diagram of Fig. 1;

Fig. 3 is a schematic diagram of the cross-sectional structure of A-A of Fig. 2;

Fig. 4 is the B-B sectional view of Fig. 3 and the schematic diagram of partial sectional structure;

Fig. 5 is a schematic cross-sectional structure diagram when the upper cover and the upper part of the box body are removed from the logistics box for transporting potted plants;

Fig. 6 is a structural schematic diagram of two sub-boards of the soil retaining board in Fig. 4 .

(5) Specific implementation methods:

Referring to Figures 1 to 6, in the figure, the logistics box for transporting potted plants includes an outer box body 1 and an inner box body 2, the inner box body 2 is arranged inside the outer box body 1, and the inner box body 2 is equipped with potted plants 3 The outer casing 1 contains the upper casing 4 and the lower casing 5, the upper casing 4 and the lower casing 5 are fixedly connected together by 4 first hasp locks 6, and the 4 first hasp locks 6 are evenly distributed in the At the junction of the upper part 4 of the box body and the lower part 5 of the box body, the inner surface 7 of the outer box body 1 is spherical; The buckle locks 10 are fixedly connected together, and the four second hasp locks 10 are evenly distributed at the junction of the bottom basin 8 and the upper cover 9, and the periphery of the bottom surface of the bottom basin 8 is evenly provided with four first universal wheels 11, 4 The wheel seat 12 of the first universal wheel 11 is fixedly connected with the lower surface of the bottom basin 8, and the upper surface periphery of the upper cover 9 is evenly provided with 4 second universal wheels 13, and the wheels of the 4 second universal wheels 13 The seat 14 is fixedly connected with the upper surface of the upper cover 9, and the inner box body 2 is only connected to the outer box body 1 by the surfaces of the rollers 15 of the four first universal wheels 11 and the surfaces of the rollers 16 of the four second universal wheels 13. The inner surface 7 of the potted plant 3 is in contact with the inner surface 7; the planting pot 17 at the bottom of the potted plant 3 is placed in the bottom pot 8, and the green plant body 18 at the top of the potted plant 3 is covered in the upper cover 9, between the inner side of the bottom pot 8 and the outer side of the planting pot 17 Evenly be provided with 4 compression springs 19, one end of each compression spring 19 is fixedly connected on the inner surface of bottom basin 8, and the other end is fixedly connected with the middle part of the outer convex surface of an arc panel 20, and the shape of the inner concave surface of the arc panel 20 is consistent with The shape of the outer surface of the planting pot 17 matches, and under the effect of the compression spring 19, the inner concave surface of the arc panel 20 is in close contact with the outer side of the planting pot 17; the upper mouth of the planting pot 17 is covered with a circular soil retaining plate 21, The outer diameter of earth retaining plate 21 is greater than the outer diameter of planting pot 17 upper mouth, and the upper surface middle part of earth retaining plate 21 is provided with first through hole 22, and the stem portion 23 of green plant body 18 passes through this first through hole 22. Over, the retaining plate 21 is divided into two identical sub-boards 24 along its diameter direction, and the straight sides of the two sub-boards 24 are respectively provided with corresponding upper flanges 25, and the upturned sides on the two sub-boards 24 The surface of the side 25 is respectively provided with at least two second through holes 26 corresponding to each other, and connecting bolts are installed in the second through holes 26, and the two sub-boards 24 are fixedly connected together by connecting bolts to form a soil retaining plate 21; 21 is connected with the inner bottom surface of bottom basin 8 by 4 fixed ropes 27, and the upper surface periphery of earth retaining plate 21 is evenly provided with 4 threading holes 28, and the inner bottom surface periphery of bottom basin 8 is uniformly fixed with 4 draw rings 29, One end of 4 fixed ropes 27 is fixedly connected with 4 pull rings 29 respectively, and the other end of 4 fixed ropes 27 passes through 4 threading holes 28 respectively and then tightens and fastens on the threading holes 28 .

The box wall of the outer box body 1 is a hollow structure, the junction of the box body upper part 4 and the box body lower part 5 is a tongue and groove, and four first hasp locks 6 are installed on the outer surface of the outer box body 1; The junction of the cover 9 is a tongue and groove, and 4 second hasp locks 10 are installed on the outer surface of the inner box body 2 .

The inner surface 7 of the outer box body 1 is a smooth spherical surface, which refers to a spherical surface that the roller 15 of the first universal wheel 11 and the roller 16 of the second universal wheel 13 can roll without hindrance on this spherical surface. The surface roughness Ra of the inner surface 7 is 0.2 μm; the hooks 30 of the four first hasp locks 6 are fixedly connected to the outer surface of the upper part 4 of the box body, and the locks 31 of the four first hasp locks 6 are fixedly connected On the outer surface of the lower part 5 of the box; the hooks 32 of the four second hasp locks 10 are fixedly connected to the outer surface of the upper cover 9, and the locks 33 of the four second hasp locks 10 are fixedly connected to the bottom basin 8 on the outer surface.

The roller 15 of the first universal wheel 11 and the roller 16 of the second universal wheel 13 are all spherical rollers installed in the ball bowl of the wheel seat, and the spherical roller is in contact with the inner surface of the outer box 1 at 7 points; the upper part of the box body 4 and the casing bottom 5 are fixedly connected together by 4 first hasp locks 6 on the outer casing, and the gap formed by the joint on the inner surface 7 of the outer casing 1 is equal to 1/5 of the diameter of the smallest spherical roller.

The outer box body 1 is in the shape of a cube, and the junction of the upper box body 4 and the lower box body part 5 is located in the middle of the outer box body 1, and fillers 34 are filled in the inner cavity of the box wall of the outer box body 1; the inner box body 2 has a drum shape with a small top and a large bottom; the outer surface of the outer box 1 is provided with ventilation holes 35 , and the outer surface of the inner box 2 is also provided with ventilation holes 36 .

The middle part of the six outer surfaces of the outer casing 1 is respectively provided with four ventilation holes 35, and the outer surface of the inner casing 2 is provided with eight ventilation holes 36, and the aperture of the ventilation holes is equal to 1/5 of the minimum spherical roller diameter.

The materials of the outer box 1 and the inner box 2 are engineering plastics; the material of the filler 34 is lightweight foamed plastic.

On the retaining plate 21 , the second through holes 26 are distributed on both sides of the first through holes 22 .

The steps to use the logistics box are as follows:

1. Open the first hasp lock 6 on the outer box body 1 to separate the upper part 4 of the box body from the lower part 5 of the box body;

2. Remove the upper part 4 of the box from the lower part 5 of the box;

3. Take out the inner box 2;

4. Open the second hasp lock 10 on the inner box body 2 to separate the bottom basin 8 of the inner box body 2 from the upper cover 9;

5. Place the planting pot 17 at the lower part of the potted plant 3 in the middle of the inner bottom surface of the bottom pot 8, adjust the position of the planting pot 17, so that the inner concave surface of the arc panel 20 fits well with the outer surface of the planting pot 17 ;

6. Cover the two sub-boards 24 of the earth retaining plate 21 on the upper opening of the planting pot 17, so that the stem portion 23 of the green plant 18 passes through the first through hole 22 of the earth retaining plate 21, and simultaneously make the two The four corresponding second through holes 26 on the surface of the upper flange 25 of the sub-board 24 are aligned, and four connecting bolts are respectively installed in the second through-holes 26, and the two sub-boards 24 are fixedly connected together to form a soil retaining plate 21 ;

7. One end of the four fixed ropes 27 is respectively fixedly connected to the four draw rings 29 on the inner bottom surface periphery of the bottom basin 8, and the other ends of the four fixed ropes 27 pass through the upper surface periphery of the earth retaining plate 21 and are evenly arranged. The 4 stringing holes 28 of the back are tightened and fastened on the stringing holes 28;

8. Put the upper cover 9 of the inner box 2 to cover the green plant 18 and fasten it on the bottom basin 8, and lock the second hasp lock 10 on the inner box 2;

9. Put the inner box body 2 into the box body lower part 5 of the outer box body 1, and make the four first universal wheels 11 evenly arranged around the lower surface of the bottom basin 8 of the inner box body 2 and the outer box body 1. contact with the spherical inner surface 7;

10. Buckle the upper part 4 of the box body on the lower part 5 of the box body, and lock the first hasp lock 6 on the outer box body 1 .

Claims (9)

1. a kind of box for material circulation for transporting potting, it is characterized in that：Containing outer case and internal box, internal box is arranged in outer case Inside, potting is housed inside internal box；Outer case contains babinet top and lower box, and babinet top and lower box pass through M the first hasp locks are fixed together, and M the first hasp locks are evenly distributed on the connection of babinet top and lower box The inner surface at place, outer case is spherical surface；Internal box contains bottom basin and upper cover, and bottom basin and upper cover are fixed by N number of second hasp lock It links together, N number of second hasp lock is evenly distributed on the junction of bottom basin and upper cover, and the lower surface periphery of bottom basin is uniformly provided with P the first universal wheels, the P wheel seats of the first universal wheel and the lower surface of bottom basin are fixedly connected, and the upper surface periphery of upper cover is uniform Equipped with Q the second universal wheels, the Q wheel seats of the second universal wheel and the upper surface of upper cover are fixedly connected, and internal box only passes through P the The surface of the idler wheel of one universal wheel and the surface of idler wheel of Q the second universal wheels are contacted with the inner surface of outer case；Potting lower part Planting pot be placed in bottom basin, the green implant on potting top is housed in upper cover, the medial surface of bottom basin and the lateral surface of planting pot Between be uniformly provided with S compressed spring, one end of each compressed spring is fixedly connected on the medial surface of bottom basin, the other end and one It being fixedly connected in the middle part of the arcuate surface of a cambered plate, the shape of the inner concave of cambered plate is matched with the shape of the lateral surface of planting pot, Under the action of compressed spring, the inner concave of cambered plate and the lateral surface of planting pot are in close contact；The upper covering suitable for reading of planting pot There are circular breast boards, the outer diameter of breast boards to be more than planting pot outer diameter suitable for reading, the upper surface middle part of breast boards is equipped with first and leads to The stem in hole, green implant passes through from the first through hole, and breast boards is divided into two pieces of identical scoreboards along its diametric(al), two pieces points Mutual corresponding upper overturning is respectively equipped on the straight flange of plate, and the upper overturning surface in two pieces of scoreboards is respectively equipped at least two phases Mutual corresponding second through-hole is equipped with connection bolt in the second through-hole, and two pieces of scoreboards are fixed together by connecting bolt Form breast boards；Breast boards is connected by T roots fixed rope and the inner bottom surface of bottom basin, and the upper surface periphery of breast boards is uniformly provided with T The inner bottom surface periphery of a lacing hole, bottom basin is uniformly fixed with T draw ring, and one end of T root fixed ropes is fixed with T draw ring respectively to be connected It connects, the other ends of T root fixed ropes is tensed after being each passed through T lacing hole and fastened on lacing hole；M and N is more than or equal to 2 Natural number, P, Q, S and T are the natural number more than or equal to 3.

2. the box for material circulation according to claim 1 for transporting potting, it is characterized in that：The tank wall of the outer case is hollow The junction of structure, babinet top and lower box is tongue and groove, and M the first hasp locks are mounted on the outer surface of outer case；Bottom The junction of basin and upper cover is tongue and groove, and N number of second hasp lock is mounted on the outer surface of internal box.

3. the box for material circulation according to claim 2 for transporting potting, it is characterized in that：The inner surface of the outer case is light Sliding spherical surface；The lock hook of M the first hasp locks is fixedly connected on the outer surface on babinet top, and the lock of M the first hasp locks is taken It is fixedly connected on the outer surface of lower box；The lock hook of N number of second hasp lock is fixedly connected on the outer surface of upper cover, N number of The lock of second hasp lock is taken on the outer surface for being fixedly connected on bottom basin.

4. the box for material circulation according to claim 1 for transporting potting, it is characterized in that：First universal wheel and the 20000th It is the spherical roller in wheel seat ball bowl, the inner surface point contact of the spherical roller and outer case to the idler wheel of wheel.

5. the box for material circulation according to claim 1 for transporting potting, it is characterized in that：The shape of the outer case is pros The junction of the bodily form, babinet top and lower box is located at the middle part of outer case, is filled in the internal cavities of outer case tank wall Filler；The shape of internal box is up-small and down-big cydariform；The outer surface of outer case is equipped with ventilation hole, the lateral surface of internal box On also be provided with ventilation hole.

6. the box for material circulation according to claim 5 for transporting potting, it is characterized in that：Six lateral surfaces of the outer case Middle part be respectively provided with four ventilation holes, the lateral surface of internal box is equipped with eight ventilation holes.

7. the box for material circulation according to claim 5 for transporting potting, it is characterized in that：The material of the outer case and internal box Matter is engineering plastics；The material of filler is light-weight foam plastics or light-weight foam rubber.

8. the box for material circulation according to claim 1 for transporting potting, it is characterized in that：Described M, N, P, Q, S and T are 4.

9. the box for material circulation according to claim 1 for transporting potting, it is characterized in that：On the breast boards, second is logical Pore size distribution is on the both sides of first through hole.