An all-terrain trolley dedicated to picking navel oranges

Abstract

The present invention relates to the field of navel orange picking equipment, and in particular to an all-terrain cart specially used for navel orange picking, including a cart, a rotating rod, an elastic protective net, etc. The present invention provides an all-terrain cart specially used for navel orange picking. In the picking state, the rotating rod opens the elastic protective net to the surroundings, so that the pickers around can easily put the picked navel oranges into the loading frame, and can also use the conveying hose and the arc tube to evenly load the navel oranges on the navel orange trees in the distance into various areas in the loading frame. In the moving state, the rotating rod gathers the elastic protective net to the middle of the loading frame, and the elastic protective net in the gathered state provides anti-fall protection for the fully loaded navel oranges in the loading frame. At the same time, it solves the problem that using an ordinary cart to walk in a navel orange planting field is not only time-consuming and labor-intensive, but also affects the picking efficiency of navel oranges, and there is also the problem that the navel oranges are shaken to the ground and damaged.

Description

Technical Field

[0001] The invention relates to the field of navel orange picking equipment, and in particular to an all-terrain cart specially used for navel orange picking. Background Art

[0002] For some navel orange orchards located in areas with relatively small ground undulations and relatively flat ground in mountainous areas, in order to improve the picking efficiency, there is a picking form in which multiple pickers use an all-terrain cart to stop in different areas of the navel orange plantation. After the pickers pick the navel oranges around the all-terrain cart, they transport them back to the cart, and then return to the navel orange trees empty-handed to pick again. After all the navel orange trees within a certain range around the cart are picked, the cart is moved to another area. The time consumed includes a lot of time for the pickers to travel back and forth between the cart and the navel orange trees, which affects the picking efficiency of the navel oranges. When the cart bed is full of a large number of navel oranges and is moving in a navel orange orchard with uneven ground, it is bound to produce severe bumps, which can easily cause the loaded navel oranges to be shaken to the ground, causing some of the fallen navel oranges to be broken and damaged, and need to be picked up and loaded again. Summary of the invention

[0003] In order to overcome the disadvantages that the pickers pick the navel oranges around the all-terrain cart, transport them back to the cart, and then return to the navel orange tree empty-handed to pick them again, which affects the picking efficiency of the navel oranges and also causes the navel oranges to fall to the ground and be damaged, the present invention provides an all-terrain cart specifically for picking navel oranges.

[0004] The technical solution is: an all-terrain cart for picking navel oranges, comprising a cart, moving wheels, a support frame, a rotating rod, a multi-stage telescopic rod, an elastic protective net, a fixing cylinder, a locking assembly, a conveying hose and a quick plug-in assembly; the cart is provided with at least two moving wheels; the cart is provided with at least two supporting frames; each of the four corners of the cart bucket of the cart is rotatably connected to a rotating rod, and the rotating direction of the rotating rod is set to be toward the center direction of the cart bucket of the cart; a ball head bearing is provided at the upper end of the rotating rod, and a multi-stage telescopic rod is commonly connected between the ball head bearings at the upper ends of the two rotating rods. The retractable rod, the multi-stage telescopic rod is composed of a fixed rod component and a telescopic rod component, wherein the fixed rod component and the telescopic rod component of the multi-stage telescopic rod are respectively connected to corresponding ball head bearings; a locking component is commonly connected between the fixed rod component of the multi-stage telescopic rod and the telescopic rod component of the same multi-stage telescopic rod; a circle of elastic protective net is commonly fixed between the four rotating rods; a fixed cylinder is fixed on any multi-stage telescopic rod; a conveying hose slides in the fixed cylinder; a quick plug-in component is commonly connected between the outlet end of the conveying hose and the fixed cylinder; and a feed hopper is connected to the inlet end of the conveying hose.

[0005] Furthermore, the locking assembly consists of an L-shaped clamping rod and a torsion spring; the L-shaped clamping rod is rotatably connected to the fixed rod component of the multi-stage telescopic rod; a torsion spring is fixedly connected between the L-shaped clamping rod and the corresponding fixed rod component of the multi-stage telescopic rod; and the clamping end of the L-shaped clamping rod is inserted into the telescopic rod component of the multi-stage telescopic rod.

[0006] Furthermore, the trolley is provided with a plurality of insertion rods; and the feed hopper is provided with a socket structure adapted to the insertion rods.

[0007] Furthermore, the quick plug-in assembly is composed of a permanent magnet and a terminal; the permanent magnet is fixedly connected to the fixed cylinder; the outlet end of the conveying hose is connected to the terminal, and the terminal is made of ferromagnetic material.

[0008] Furthermore, a transverse slider is slidably connected inside the cart bucket; a tension spring is fixedly connected between the transverse slider and the cart bucket; an arc tube is fixedly connected to the transverse slider; a fixed thread structure is provided at the inlet end of the arc tube; and a movable thread structure that matches the fixed thread structure of the arc tube is provided at the outlet end of the end head.

[0009] Further, the end is rotated to connect the delivery hose.

[0010] Furthermore, each of the four corners of the trolley is fixedly connected with a supporting clamp rod for supporting and unfolding the rotating rod on the same side, and a magnet capable of magnetically attracting the rotating rod is embedded inside the supporting clamp rod, and the rotating rod is made of ferromagnetic material.

[0011] Furthermore, the surface of the supporting clamp rod is covered with a layer of elastic rubber material.

[0012] Furthermore, a buffer sponge is provided at the bottom of the inner side of the cart.

[0013] Furthermore, one end of the conveying hose close to the feed hopper is configured as a telescopic tube structure.

[0014] The beneficial effects are as follows: the present invention provides an all-terrain cart specially used for picking navel oranges, which mainly consists of a cart bucket, a rotating rod and an elastic protective net on the rotating rod to form a loading frame. In the picking state, the rotating rod opens the elastic protective net to the four sides to increase the loading entrance area of ​​the navel oranges, so that pickers located around can easily put the picked navel oranges into the loading frame. At the same time, one of the pickers can hold the conveying hose and cooperate with the arc tube on the horizontal slider to evenly load the navel oranges on the navel orange trees located far away into various areas in the loading frame. In the moving state, the rotating rod gathers the elastic protective net to the middle of the loading frame, and the elastic protective net in the gathered state provides anti-fall protection for the fully loaded navel oranges in the loading frame, thereby solving the problem that using an all-terrain cart to walk in a navel orange planting field is not only time-consuming and labor-intensive, but also affects the picking efficiency of navel oranges, and there is also a problem that the navel oranges may be shaken to the ground and damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This invention describes a three-dimensional schematic diagram of the moving state of an all-terrain trolley dedicated to navel orange picking;

[0016] Figure 2 This invention describes a three-dimensional diagram of a wheelbarrow of an all-terrain trolley dedicated to navel orange picking;

[0017] Figure 3 This invention describes a three-dimensional diagram of a conveying hose of an all-terrain trolley dedicated to navel orange picking;

[0018] Figure 4 This invention describes a three-dimensional diagram of a multi-stage telescopic rod of an all-terrain trolley dedicated to navel orange picking;

[0019] Figure 5 This invention describes a three-dimensional diagram of an arc tube of an all-terrain trolley dedicated to navel orange picking;

[0020] Figure 6 This invention describes a three-dimensional diagram of an end of an all-terrain trolley dedicated to navel orange picking;

[0021] Figure 7 This invention describes a three-dimensional schematic diagram of the picking state of an all-terrain trolley dedicated to navel orange picking.

[0022] Names and serial numbers of components in the figure: 11 - wheelbarrow, 12 - moving wheel, 13 - support frame, 14 - insertion rod, 21 - rotating rod, 22 - multi-stage telescopic rod, 23 - elastic protection net, 24 - fixed cylinder, 25 - permanent magnet, 26 - L-shaped clamping rod, 27 - torsion spring, 28 - support clamping rod, 3 - conveying hose, 31 - feeding hopper, 310 - jack, 32 - end, 4 - horizontal slider, 41 - tension spring, 42 - arc tube. Detailed implementation method

[0023] The following will detail the preferred technical solutions of the present invention in conjunction with the accompanying drawings. Embodiment 1

[0024] An all-terrain trolley dedicated to navel orange picking, as Figures 1 - 6As shown in the figure, it includes a trolley 11, moving wheels 12, a support frame 13, a rotating rod 21, a multi-stage telescopic rod 22, an elastic protective net 23, a fixed cylinder 24, a locking component, a conveying hose 3, and a quick plug-in component; there are two moving wheels 12 on the trolley 11; there are two support frames 13 on the trolley 11; one rotating rod 21 is rotatably connected to each of the four corners of the hopper of the trolley 11; the rotation directions of the four rotating rods 21 are all set to face the center direction of the hopper of the trolley 11; a ball head bearing is provided at the upper end of each rotating rod 21, and a multi-stage telescopic rod 22 is commonly connected between the ball head bearings at the upper ends of every two adjacent rotating rods 21. The multi-stage telescopic rod 22 is composed of a fixed rod component and a telescopic rod component. Among them, the fixed rod component of the multi-stage telescopic rod 22 and the telescopic rod component farthest from the fixed rod component are respectively connected to the corresponding ball head bearings; a locking component is commonly connected between the fixed rod component of each multi-stage telescopic rod 22 and the telescopic rod component farthest from the fixed rod component on the same multi-stage telescopic rod 22; an elastic protective net 23 is commonly fixed between the four rotating rods 21. The hopper of the trolley 11, the rotating rod 21, and the elastic protective net 23 together form a loading frame; a fixed cylinder 24 is fixedly connected to the fixed rod component of any one multi-stage telescopic rod 22; a conveying hose 3 slides in the fixed cylinder 24; a quick plug-in component is commonly connected between the outlet end of the conveying hose 3 and the fixed cylinder 24; the inlet end of the conveying hose 3 is connected to a feed hopper 31; one end of the conveying hose 3 close to the feed hopper 31 is a telescopic tube structure, and the telescopic tube structure is a foldable and extendable corrugated structure. The picker can increase the length of the conveying hose 3 by stretching the telescopic tube structure of the conveying hose 3. After the picker contracts the telescopic tube structure of the conveying hose 3, the length of the conveying hose 3 can be shortened. The shortening of the length of the conveying hose 3 facilitates its storage on the trolley 11; there are several insertion rods 14 on the trolley 11; two jack 310 structures adapted to the insertion rods 14 are provided on the feed hopper 31. During non-picking work, the picker can fix the feed hopper 31 on the insertion rods 14 of the trolley 11 through the jack 310 structures, thereby completing the fixation of the feed hopper 31 on the conveying hose 3 and preventing the conveying hose 3 from dragging on the ground.

[0025] As Figure 4 shown, the locking component is composed of an L-shaped clamping rod 26 and a torsion spring 27; the L-shaped clamping rod 26 is rotatably connected to the fixed rod component of the multi-stage telescopic rod 22; two torsion springs 27 are commonly fixed between the L-shaped clamping rod 26 and the fixed rod component of the corresponding multi-stage telescopic rod 22; the clamping end of the L-shaped clamping rod 26 is initially inserted into a card slot correspondingly opened on the surface of the telescopic rod component of the multi-stage telescopic rod 22 farthest from the fixed rod component. In this state, the telescopic rod component of the multi-stage telescopic rod 22 is firmly locked by the clamping end of the L-shaped clamping rod 26 on the fixed rod component of the multi-stage telescopic rod 22, and the torsion spring 27 assists the L-shaped clamping rod 26 to make the locking effect more stable.

[0026] As Figure 3 andFigure 4 As shown, the quick plug-in assembly consists of a permanent magnet 25 and an end 32; the permanent magnet 25 is fixedly connected to the fixed cylinder 24; the outlet end of the conveying hose 3 is connected to the end 32, and the end 32 is a ferromagnetic material; the permanent magnet 25 generates a magnetic attraction to the end 32 of the stainless steel iron material, so that the end 32 is firmly magnetically attracted to the permanent magnet 25, and the picker only needs to pull the end 32 away from the permanent magnet 25 to quickly complete the separation of the two.

[0027] like Figure 2 and Figure 5 As shown, a transverse slider 4 is slidably connected in the bucket of the trolley 11; a light tension spring 41 is fixedly connected between the transverse slider 4 and the bucket of the trolley 11; an arc tube 42 is fixedly connected to the transverse slider 4, and the outlet end of the arc tube 42 is downwardly directed toward the bottom of the bucket of the trolley 11; a fixed thread structure is provided at the inlet end of the arc tube 42; the end head 32 is rotatably connected to the conveying hose 3; the outlet end of the end head 32 is provided with a movable thread structure that matches the fixed thread structure of the arc tube 42, and when the end head 32 is rotated and tightened on the fixed thread structure of the arc tube 42 through the movable thread structure, the end head 32 will be firmly fixed on the arc tube 42.

[0028] During the picking operation of the all-terrain cart specially used for picking navel oranges of the present invention, the picker first uses the moving wheels 12 to move the cart 11 along the forest path reserved between the rows of navel orange trees in the navel orange orchard to between multiple navel orange trees. By widening and enlarging the moving wheels 12, the cart 11 can be normally moved on the navel orange orchard road with a certain degree of ruggedness, so that the cart is more adaptable to the rugged road surface; the picker then lays the cart 11 flat, and the support frame 13 on the cart 11 is propped up on the ground, so that the cart 11 is parked between the multiple navel orange trees, and then the picker respectively pulls up the L-shaped clamping rods 26 on the two multi-stage telescopic rods 22 to extend the multi-stage telescopic rods 22, and then the picker pulls all the rotating rods 21 to flip to the side away from the cart 11, and at the same time, the rotating rods 21 on the front and rear sides respectively pull the fixed rod component and the telescopic rod component of the multi-stage telescopic rod 22 to expand in the direction away from each other, such as Figure 7 As shown, at this time, the four flipped-open rotating rods 21 jointly open the elastic protective net 23 to the four sides, so that the navel orange loading entrance area of ​​the loading frame composed of the cart 11, the rotating rods 21 and the elastic protective net 23 is increased, and the pickers can easily put the picked navel oranges into the loading frame when picking the navel oranges on the navel orange trees around the parking area of ​​the cart 11.

[0029] Combination Figure 2 and Figure 3Understand that when picking navel oranges that are relatively far from the trolley 11, one of the pickers first pulls the end 32 of the conveying hose 3 off the permanent magnet 25, and tightens the end 32 of the conveying hose 3 onto the fixed thread structure of the arc-shaped pipe 42 through the movable thread structure, so that the end 32 is fixed on the arc-shaped pipe 42, as Figure 7 shown. Subsequently, the picker holds the conveying hose 3 by hand and walks towards the navel orange tree far away from the parking area of the trolley 11 to carry out the navel orange picking work. The conveying hose 3 is pulled outwards along the fixed cylinder 24. At the same time, the conveying hose 3 pulls the transverse slider 4 to drive the arc-shaped pipe 42 to move towards the fixed cylinder 24. The transverse slider 4 drives the light pull spring 41 to stretch. The picker puts the picked navel oranges into the conveying hose 3 through the feed hopper 31. As long as the inlet end of the conveying hose 3 is pulled up to a height higher than the height of the fixed cylinder 2, the navel oranges can slide down along the conveying hose 3 and the arc-shaped pipe 42 into the hopper of the trolley 11 in sequence, completing the long-distance transportation process of the navel oranges. There is no need for the picker to put the navel oranges picked from a distance into the loading frame and then return to the navel orange tree empty-handed, reducing the time consumed on the way. When the picker pulls the conveying hose 3 towards a navel orange tree further away to carry out the navel orange picking work, the conveying hose 3 will pull the transverse slider 4 to drive the arc-shaped pipe 42 to move towards the fixed cylinder 24 more closely. At this time, the navel oranges sliding down from the outlet end of the arc-shaped pipe 42 will fall into the area closer to the fixed cylinder 24 on one side of the hopper of the trolley 11, realizing that during the process of the picker continuously pulling the conveying hose 3, the position of the outlet can be changed along with the movement of the picker, and the navel oranges can be evenly loaded into each area of the loading frame.

[0030] When other pickers working near the trolley 11 observe that the loading height of navel oranges in the hopper of the trolley 11 is about to be level with the height of the arc-shaped pipe 42, but there are still pickable navel oranges near the pickers picking from a distance, the end 32 is removed from the arc-shaped pipe 42, and the end 32 is remagnetically fixed on the permanent magnet 25 of the fixed cylinder 24, so that the conveying hose 3 is pulled out from the fixed cylinder 24 to a longer length. The picker picking from a distance can also pull the telescopic end of the conveying hose 3 towards the navel orange tree further away than before to carry out the navel orange picking work. After the picker picking from a distance puts the picked navel oranges into the conveying hose 3, it is possible that the conveying hose 3 has been sent out but the picker picking from a distance has not moved further away. At this time, the conveying hose 3 has a certain amount of movable margin. When the large navel oranges slide towards the trolley 11 in the conveying hose 3, there is a very low probability that the navel oranges will cause the conveying hose 3 to droop and bend due to the downward pressure of gravity. When the drooping and bending area appears near the fixed cylinder 24, the navel oranges further sliding towards the fixed cylinder 24 becomes "going uphill", and they may not be able to successfully "go uphill" due to insufficient power, and finally the navel oranges stay in the conveying hose 3. At this time, the picker near the trolley 11 needs to manually lift the conveying hose 3 to send the staying navel oranges into the trolley 11. The navel oranges directly fall onto the elastic protective net 23 along the conveying hose 3 and roll and accumulate between the hopper of the trolley 11 and the elastic protective net 23. Then the picker near the trolley 11 finishes picking and instead starts to place the subsequent navel oranges sent into the trolley 11 in other areas of the hopper of the trolley 11, adjusting the shape of the navel orange pile to avoid concentrated accumulation in one area until it is full and the picking work ends; although the picker who originally picked near the trolley 11 no longer picks, adjusting the shape of the navel orange pile to avoid concentrated accumulation is also a necessary step in the whole picking process, so the placement work is also a necessary working step. And if the picker picking from a distance from the trolley 11 is chosen to handle the above events, the picker still has to return to the trolley 11 first, resulting in unnecessary time consumption.

[0031] After finishing the picking work, the picker needs to first reset the rotating rod 21 to the center of the hopper of the trolley 11. As Figure 1 shown, the four rotating rods 21 that are flipped and reset together drive the elastic protective net 23 to converge towards the center of the hopper of the trolley 11, so that the elastic protective net 23 is converged to fit the surface of the navel oranges filled in the loading frame. At the same time, the rotating rods 21 on the front and rear sides respectively push the fixed rod part and the telescopic rod part of the multi-stage telescopic rod 22 to contract and reset in the direction of approaching each other. Subsequently, the picker inserts the clamping end of the L-shaped clamping rod 26 back into the clamping groove of the telescopic rod part of the multi-stage telescopic rod 22, so that the telescopic rod part of the multi-stage telescopic rod 22 is firmly locked by the clamping end of the L-shaped clamping rod 26, realizing that during the process of the picker pushing the trolley 11 to move, even if the trolley 11 experiences severe bumps, the elastic protective net 23 between the four rotating rods 21 can limit the navel orange pile and provide anti-falling protection. Example 2

[0032] The difference between this embodiment and Embodiment 1 is that, as Figures 1 - 6 shown, a support clamping rod 28 for supporting and unfolding the same-side rotating rod 21 is fixedly connected to each of the four corners of the trolley 11. A magnet capable of magnetically attracting the rotating rod 21 is embedded inside the support clamping rod 28. The rotating rod 21 is made of ferromagnetic material, and the magnetic attraction generated by the magnet is greater than the restoring elastic force generated after the elastic protective net 23 is stretched and unfolded; a layer of elastic rubber material covers the surface of the support clamping rod 28; when the rotating rod 21 is turned outwards into the unfolded state as Figure 7 shown, the rotating rod 21 is adsorbed on the corresponding support clamping rod 28, and the support clamping rod 28 restricts the rotating rod 21 to prevent the rotating rod 21 from not being able to unfold normally under the elastic force of the elastic protective net 23; generally, the picker manually unfolds the rotating rod 21 and directly lets go when feeling the magnetic attraction of the support clamping rod 28 on the rotating rod 21. The support clamping rod 28 is automatically adsorbed onto the rotating rod 21. For magnets with strong magnetism such as neodymium iron boron magnets, in fact, the final movement of the rotating rod 21 is closer to directly hitting the surface of the support clamping rod 28. After many times, problems such as local deformation of the rotating rod 21 are likely to occur. Therefore, by covering a layer of rubber skin, the impact can be slowed down and the rotating rod 21 can be protected without affecting the magnetic adsorption and fixing function. Example 3

[0033] A buffer sponge is provided at the inner bottom of the hopper of the trolley 11; the navel oranges that slide down from the outlet end of the arc-shaped pipe 42 and fall into the hopper of the trolley 11 will be supported by the buffer sponge with elastic buffering performance for the first time, avoiding the navel oranges from directly hitting the inner part of the hopper of the trolley 11 and being damaged, and realizing the protection of the picked navel oranges.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An all-terrain cart for picking navel oranges, comprising: a cart (11); the cart (11) is provided with at least two moving wheels (12); the cart (11) is provided with at least two supporting frames (13); Its characteristics are: The invention also comprises a rotating rod (21); each of the four corners of the bucket of the trolley (11) is rotatably connected to a rotating rod (21), and the rotating direction of the rotating rod (21) is set to be toward the center direction of the bucket of the trolley (11); a ball bearing is provided at the upper end of the rotating rod (21), and the ball bearings at the upper ends of the two rotating rods (21) are commonly connected to a multi-stage telescopic rod (22), the multi-stage telescopic rod (22) comprising a fixed rod component and a telescopic rod component, wherein the fixed rod component and the telescopic rod component of the multi-stage telescopic rod (22) are respectively connected to corresponding Ball bearing; a locking assembly is commonly connected between the fixed rod component of the multi-stage telescopic rod (22) and the telescopic rod component of the same multi-stage telescopic rod (22); a circle of elastic protective net (23) is commonly fixedly connected between the four rotating rods (21); a fixed cylinder (24) is fixedly connected to any multi-stage telescopic rod (22); a conveying hose (3) slides in the fixed cylinder (24); a quick plug-in assembly is commonly connected between the outlet end of the conveying hose (3) and the fixed cylinder (24); and a feed hopper (31) is connected to the inlet end of the conveying hose (3); The locking assembly is composed of an L-shaped clamping rod (26) and a torsion spring (27); the L-shaped clamping rod (26) is rotatably connected to the fixed rod component of the multi-stage telescopic rod (22); the torsion spring (27) is fixedly connected between the L-shaped clamping rod (26) and the corresponding fixed rod component of the multi-stage telescopic rod (22); the clamping end of the L-shaped clamping rod (26) is plugged into the telescopic rod component of the multi-stage telescopic rod (22); The quick plug-in assembly is composed of a permanent magnet (25) and a terminal (32); the permanent magnet (25) is fixedly connected to the fixed cylinder (24); the outlet end of the delivery hose (3) is connected to the terminal (32), and the terminal (32) is made of ferromagnetic material; A transverse slider (4) is slidably connected in the bucket of the trolley (11); a tension spring (41) is fixedly connected between the transverse slider (4) and the bucket of the trolley (11); an arc-shaped tube (42) is fixedly connected to the transverse slider (4); a fixed thread structure is provided at the inlet end of the arc-shaped tube (42); and a movable thread structure that matches the fixed thread structure of the arc-shaped tube (42) is provided at the outlet end of the end head (32); The end (32) is rotatably connected to the delivery hose (3).

2. The all-terrain cart for picking navel oranges according to claim 1 is characterized in that: The trolley (11) is provided with a plurality of insertion rods (14); and the feed hopper (31) is provided with an insertion hole (310) structure adapted to the insertion rods (14).

3. The all-terrain cart for picking navel oranges according to claim 1 is characterized in that: Each of the four corners of the trolley (11) is fixedly connected with a support clamp rod (28) for supporting the unfolding of the same-side rotating rod (21). A magnet capable of magnetically attracting the rotating rod (21) is embedded in the support clamp rod (28). The rotating rod (21) is made of ferromagnetic material.

4. The all-terrain cart for picking navel oranges according to claim 3 is characterized in that: The surface of the supporting clamp rod (28) is covered with a layer of elastic rubber material.

5. The all-terrain cart for picking navel oranges according to claim 1 is characterized in that: A buffer sponge is provided at the bottom of the inner side of the cart (11).

6. The all-terrain cart for picking navel oranges according to any one of claims 1 to 5, characterized in that: One end of the conveying hose (3) close to the feed hopper (31) is configured as a telescopic tube structure.

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