CN212138439U - Portable winter jujube picking and collecting device - Google Patents
Portable winter jujube picking and collecting device Download PDFInfo
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- CN212138439U CN212138439U CN202020286856.0U CN202020286856U CN212138439U CN 212138439 U CN212138439 U CN 212138439U CN 202020286856 U CN202020286856 U CN 202020286856U CN 212138439 U CN212138439 U CN 212138439U
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Abstract
The utility model provides a collection device is picked to portable winter jujube has solved among the prior art winter jujube and has picked the problem that efficiency is lower, easily produce the damage to winter jujube. The portable winter jujube picking and collecting device comprises a picking mechanism and a collecting mechanism which are of split structures; the picking mechanism comprises a front rod body and a rear rod body which are connected through a tooth cup, the tooth cup is in threaded fit with the rear rod body, the front rod body is tightly pressed and fixed in an inner cavity of the rear rod body, and the front rod body can freely move in the rear rod body after the tooth cup is separated from the rear rod body; the front end of the front rod body is provided with a motor, the motor is connected with a paw shell through an eccentric block, and the paw shell vibrates in a reciprocating manner along the length directions of the front rod body and the rear rod body under the action of the motor and the eccentric block; a plurality of L-shaped bent teeth are fixed on the paw shell, an anti-slip sleeve is fixed on each bent tooth, at least one needle roller bearing is sleeved on each anti-slip sleeve, and the needle roller bearings are used for forming rolling friction with winter jujubes during picking.
Description
Technical Field
The utility model relates to a winter jujube picks and collects technical field, especially indicates a simple structure, convenient to use can not produce the harvesting collection device that damages to winter jujube.
Background
The skins of winter jujube fruits are very fragile and easy to damage, and the texture of the pulp is influenced, so that the winter jujube fruits are damaged when the winter jujube is picked by the traditional jujube picking method, and the ripeness degree is not well controlled by the artificial chemical agent ripening method, so that the most main mode at present is still artificial picking. Even though manual picking is the method for minimizing the damage rate of the winter jujubes, the winter jujubes need to be picked and placed lightly when being picked manually, so that the winter jujubes are prevented from being collided by each other or from falling on the ground as much as possible, and the integrity of the winter jujubes is kept. The exposed and damaged pulp not only causes the appearance to become unattractive, but also increases the difficulty of keeping the winter jujube fresh. Most of the existing winter jujube picking technologies cannot be suitable for the close planting winter jujube planting situation in China.
Currently, the research on fruit and vegetable picking machines abroad is developed from manual picking and shaking to picking by using robots. At the end of the 20 th century, colleges and universities in japan developed manipulators with 7 degrees of freedom that can mimic the picking action of workers. Although the freedom degree and operability of the picking manipulator are higher and higher with the further development of intelligent manufacturing, for winter jujube fruits, the fruits are smaller in size, round in appearance, not suitable for directional grabbing of mechanical claws, and large in number, compared with high-precision picking of robots and high cost of manufacturing the robots, the robot picking cannot be applied in a large scale, and the picked winter jujubes cannot form corresponding benefit values.
Disclosure of Invention
The utility model provides a collection device is picked to portable winter jujube has solved among the prior art winter jujube and has picked the problem that efficiency is lower, easily produce the damage to winter jujube.
The technical scheme of the utility model is realized like this: the portable winter jujube picking and collecting device comprises a picking mechanism and a collecting mechanism which are of split structures;
the picking mechanism comprises a front rod body and a rear rod body which are connected through a tooth cup, the tooth cup is in threaded fit with the rear rod body, the front rod body is tightly pressed and fixed in an inner cavity of the rear rod body, and the front rod body can freely move in the rear rod body after the tooth cup is separated from the rear rod body;
the front end of the front rod body is provided with a motor, the motor is connected with a paw shell through an eccentric block, and the paw shell vibrates in a reciprocating manner along the length direction of the front rod body and the rear rod body under the action of the motor and the eccentric block;
a plurality of L-shaped bent teeth are fixed on the paw shell, an anti-slip sleeve is fixed on each bent tooth, at least one needle roller bearing is sleeved on each anti-slip sleeve, and the needle roller bearings are used for forming rolling friction with winter jujubes during picking.
As a preferred embodiment, the end of the rear rod body comprises a locking section and an external thread section which are arranged in front and at back, the locking section is composed of a plurality of locking pieces with elasticity, the locking pieces are uniformly arranged in the circumferential direction of the rear rod body, and the front ends of the locking pieces are in an inverted hook shape;
the tooth cup comprises round platform section and the internal thread section of arranging from beginning to end, the stay is located in the round platform section, when the external thread section of the body of rod and the internal thread section of tooth cup are screwed gradually in the back, the round platform section extrudees the stay inwards.
As a preferred embodiment, a boss protruding inwards is arranged at the joint of the circular table section of the tooth cup and the internal thread section, and the boss corresponds to the inverted hook-shaped front end of the locking sheet so as to prevent the rear rod body from being separated from the tooth cup.
As a preferred embodiment, the collecting means comprises
The support can move freely, and a concave groove for accommodating the jujube trees is formed in the front of the support;
the rope line stretching type umbrella cover is arranged on the support and can be folded at two sides of the support or unfolded when being used for collecting winter jujubes;
and the tooth-shaped locker is arranged on the bracket and is used for fixing the bracket when the winter jujubes are collected.
As a preferred embodiment, the rope stretching type umbrella surface comprises two groups which are arranged at two sides of the bracket, the two groups have the same structure and have height difference, and the two groups have an overlapping area after being opened, so as to realize the full coverage of the space below the jujube trees;
each group of rope line stretching type umbrella fabric comprises two umbrella rods, the two umbrella rods are mounted on a support through bearings and can rotate in the horizontal plane, umbrella cloth is arranged between the two umbrella rods and between the umbrella rods and the support on the corresponding side, and the height of the outer side of the umbrella cloth is higher than that of the inner side of the umbrella cloth so as to ensure smooth collection of winter jujubes;
umbrella cloth with a high outer part and a low inner part is also arranged above the bracket, and when winter jujubes are collected, all the umbrella cloth surrounds the jujube trees for a circle.
As a preferred embodiment, a locking rod is arranged on the bracket, the front end of the locking rod extends into the concave groove and is fixed with a push rod head, a spring sleeved on the locking rod is arranged between the push rod head and the bracket, and the push rod head is used for abutting against the jujube tree and compressing the spring when collecting winter jujubes;
the locking rod is provided with rope lines which are in one-to-one correspondence with the umbrella rods in a penetrating manner, the rope lines are wound around the stop levers on the two sides and are wound at the bottoms of the corresponding umbrella rods, and when the locking rod moves, the umbrella rods are driven to swing through the rope lines.
As a preferred embodiment, the tooth-shaped locking device comprises a plurality of inclined blocks arranged on the locking rod side by side, and also comprises a clamping block arranged on the bracket;
the sloping blocks are installed on the locking rod through springs, all the sloping blocks and the clamping blocks are arranged oppositely, and when winter jujubes are collected, one sloping block is clamped with the clamping block, so that the umbrella rod is fixed.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the utility model discloses a collection device is picked to portable winter jujube is integrated by the device of a plurality of different functions, compact structure, has reduced the manufacturing cost of machine, and the size of machine is designed according to the data such as winter jujube planting field row column spacing and jujube tree height of on-the-spot research, therefore the volume of machine has obtained the optimization, and work area reduces for the machine can be extensive use each big winter jujube of china plant in the region. Compared with manual picking, the mechanical assistance is increased, the winter jujube picking efficiency can be effectively improved, the mechanical size is reasonable and more flexible for pure mechanical picking, and the mechanical picking device can adapt to picking of densely planted winter jujubes in China.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the picking mechanism of the present invention;
FIG. 2 is a left side schematic view of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at I;
FIG. 4 is an enlarged view of a portion of FIG. 1 at II;
FIG. 5 is an enlarged view of a portion of FIG. 2 at III;
FIG. 6 is a schematic structural view of the collecting mechanism of the present invention;
FIG. 7 is a schematic top view of the collection mechanism;
FIG. 8 is a side schematic view of the collection mechanism;
FIG. 9 is an enlarged view of a portion of FIG. 7 at IV;
FIG. 10 is an enlarged view of a portion of FIG. 7 at V;
FIG. 11 is an enlarged view of a portion at VI in FIG. 6;
in the figure: 1-a picking mechanism; 2-a collecting mechanism; 3-tooth cup; 4-front rod body; 5-rear rod body; 6, a motor; 7-eccentric mass; 8-paw shell; 9-bending teeth; 10-an anti-slip sleeve; 11-needle bearings; 12-an external thread section; 13-a locking sheet; 14-inverted hook type front end; 15-a circular table section; 16-internal thread section; 17-a boss; 18-a scaffold; 19-a concave groove; 20-cord stretch type umbrella fabric; 21-a first umbrella pole; 22-a second umbrella pole; 23-a third umbrella pole; 24-a fourth umbrella pole; 25-a fifth diagonal; 26-a sixth sway bar; 27-a bearing; 28-a locking lever; 29-a putter head; 30-a spring; 31-a string; 32-a stop lever; 33-a sloping block; 34-a fixture block.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1 and 6, do the utility model discloses two main component parts of collection device are picked to portable winter jujube, wherein, fig. 1 is picking mechanism 1, and fig. 6 is collection mechanism 2, and these two parts are mutually independent when using, and the handheld picking mechanism 1 of staff is picked the winter jujube on the tree, and collects mechanism 2 and arranges in the jujube tree below for collect the winter jujube that drops, thereby improve the efficiency of collecting. When not in use, picking mechanism 1 may be placed on collection mechanism 2 for storage. The structure of these two parts is described in detail below.
As shown in fig. 1 to 5, which are a schematic structural view of the picking mechanism 1 and a partial structural view of a plurality of parts, the picking mechanism 1 is in a long rod shape, and here, for convenience of explanation, the upper end of fig. 1 is defined as the front end of the picking mechanism 1. Its main part includes the preceding body of rod 4 and the back body of rod 5 connected through tooth cup 3, and the relative position of the preceding body of rod 4 and the back body of rod 5 can be adjusted and fixed with both through tooth cup 3's operation to change picker 1's length, make things convenient for the staff to operate, specifically as follows: as shown in fig. 4, the interior of the rear rod 5 is hollow, the front rod 4 penetrates into the inner cavity of the rear rod 5, a tooth cup 3 is further sleeved outside the connecting portion of the front rod 4 and the rear rod 5, the tooth cup 3 comprises a circular truncated cone section 15 and an internal thread section 16, and the size of the circular truncated cone section 15 is gradually increased from front to back. And the front end of the rear rod body 5 is provided with an external thread section 12 and a locking section, wherein the external thread section 12 can be in threaded fit with the internal thread section 16, the locking section comprises a plurality of locking sheets 13 which are circumferentially arranged, the number of the locking sheets 13 is four in the embodiment, and the locking sheets 13 have certain elasticity. The front end of the locking sheet 13 is of an inverted hook type, that is, the front end 14 of the inverted hook type in fig. 4, and a boss 17 which is located on the inner wall of the tooth cup 3 and protrudes inwards is correspondingly arranged at the connecting part of the circular truncated cone section 15 and the internal thread section 16, and the boss 17 is used for being clamped with the front end 14 of the inverted hook type to prevent the rear rod body 5 from being separated from the tooth cup 3. When the overall length of the picking mechanism 1 needs to be adjusted, the tooth cup 3 needs to be rotated firstly, so that the external thread section 12 is separated from the internal thread section 16, at the moment, the front rod body 4, the rear rod body 5 and the tooth cup 3 are relatively in an independent state, the relative positions can be adjusted at will, and in any case, under the condition that the boss 17 and the barb type front end 14 exist, the rear rod body 5 cannot be separated from the tooth cup 3. When the length of the picking mechanism 1 is adjusted to be proper, the tooth cup 3 is rotated, so that the internal thread section 16 and the external thread section 12 are slowly combined, at the moment, the tooth cup 3 moves backwards relative to the rear rod body 5, the circular truncated cone section 15 slowly extrudes the locking sheet 13 inwards, the front rod body 4 is further pressed in the rear rod body 5, and the length of the picking mechanism 1 is fixed.
As shown in fig. 3 and 5, a motor 6 is mounted at the front end of the front rod body 4, the motor 6 is connected with a gripper shell 8 through an eccentric block 7, and the gripper shell 8 vibrates reciprocally along the length direction of the front rod body 4 and the rear rod body 5 under the action of the motor 6 and the eccentric block 7; meanwhile, a plurality of L-shaped bent teeth 9 are fixed on the paw shell 8, each bent tooth 9 is fixed with an anti-slip sleeve 10, each anti-slip sleeve 10 is sleeved with at least one (two in the embodiment) needle roller bearing 11, when a worker brings the paw shell 8 close to the winter jujubes, under the vibration action of the paw shell 8, rolling friction is formed between the winter jujubes and the needle roller bearings 11, so that the damage to the skins of the winter jujubes is reduced, and the winter jujubes can be shaken down.
As shown in fig. 6, fig. 7 and fig. 8, the collecting mechanism 2 is a schematic structural diagram, and the collecting mechanism 2 is placed under a jujube tree when in use, so that winter jujubes fallen down by the picking mechanism 1 can be directly collected, and the structure of the collecting mechanism 2 will be described in detail below.
The collecting mechanism 2 comprises a support 18 composed of a plurality of rod bodies, wheels are mounted at the bottom of the support 18, the support can be moved conveniently, a concave groove 19 is formed in the front portion of the support 18, and the support 18 is pushed until a jujube tree is embedded into the concave groove 19 when winter jujubes are picked. As shown in figure 9, a locking lever 28 is arranged on the bracket 18, the front end of the locking lever 28 extends into the concave groove 19 and is fixed with a push rod head 29, the push rod head 29 is used for directly abutting against the jujube tree, a spring 30 sleeved on the locking lever 28 is arranged between the push rod head 29 and the bracket 18, and the spring 30 is used for realizing the resetting of the locking lever 28 and the folding of the umbrella cloth.
As shown in fig. 10 and 11, a tooth-shaped locking device is further mounted on the bracket 18, and includes a plurality of inclined blocks 33 arranged side by side on the locking rod 28, and a latch block 34 arranged on the bracket 18; these swash blocks 33 are each mounted on the lock lever 28 by a spring (not shown in the drawings), so that the swash blocks 33 can reciprocate in a direction perpendicular to the lock lever 28. All the inclined blocks 33 and the clamping blocks 34 are arranged oppositely, when the locking rod 28 moves backwards, the inclined blocks 33 sequentially slide over the clamping blocks 34 until the locking rod 28 stops moving, at the moment, one of the inclined blocks 33 is clamped with the clamping block 34 to counteract the elastic force of the spring 30, and therefore the locking rod 28 is fixed. After the collection is completed, the locking rod 28 is rotated to separate the inclined block 33 from the latch 34, and the locking rod 28 is reset under the action of the spring 30.
The support 18 is further provided with two groups of rope stretching type umbrella covers 20, the two groups of rope stretching type umbrella covers 20 are respectively arranged at two sides of the concave groove 19, when winter jujubes are collected, the two groups of rope stretching type umbrella covers 20 can be opened, and the opening or closing action is controlled by the locking rod 28, specifically, when the locking rod 28 moves backwards, the two groups of rope stretching type umbrella covers 20 are opened, and when the locking rod 28 moves forwards, the two groups of rope stretching type umbrella covers 20 are closed.
In fig. 7 and 9, one group of the cord stretching umbrella covers 20 includes a first umbrella stick 21 and a second umbrella stick 22 arranged on the left side of the concave groove 19, and the other group includes a third umbrella stick 23 and a fourth umbrella stick 24 arranged on the right side of the concave groove 19, as shown in fig. 8, the four umbrella sticks are all mounted through a bearing 27, so that the four umbrella sticks can rotate in the horizontal plane, and are all in a form of high outside and low inside, an umbrella cloth is arranged between the first umbrella stick 21 and the second umbrella stick 22, an umbrella cloth is arranged between the third umbrella stick 23 and the fourth umbrella stick 24, and the umbrella cloth is not shown in the figures for convenience of illustration. When the two sets of cord stretching umbrellas 20 are completely opened, a certain overlapping area is required between the second umbrella stick 22 and the third umbrella stick 23 to prevent date leakage, and therefore, a certain height difference is required between the second umbrella stick 22 and the third umbrella stick 23 during installation.
And realize that the key part of two sets of tensile formula umbrella face 20 actions of rope is rope 31 for running through check lock pole 28, one-to-one between rope 31 and the umbrella pole, and all ropes 31 are all walked around the pin 32 back winding of both sides and are corresponded the bottom of umbrella pole, certainly, in order to realize the reseing of four umbrella poles, can also install parts such as torsional spring additional in the bottom of umbrella pole. When the collecting work is not performed, the first and second umbrella poles 21 and 22 are attached to the left side of the support frame 18, i.e., to the fifth diagonal 25, and the third and fourth umbrella poles 23 and 24 are attached to the right side of the support frame 18, i.e., to the sixth diagonal 26, so that it is possible to prevent them from occupying too much space. When collecting the operation, the staff promotes support 18 to push down rod head 29 and leans on the jujube tree, push down rod head 29 compression spring 30 this moment, and locking lever 28 moves backward, and locking lever 28 can drive rope 31, and rope 31 and then four umbrella poles of pulling realize the rotation, until rotatory to the state that fig. 7 shows, of course, the rotation angle of four umbrella poles is decided by a plurality of factors, and foremost is the position and the interval of fender pole 32 in fig. 9, and these all can be through detailed calculation, do not describe here again. After rotating to the state shown in fig. 7, one of the inclined blocks 33 will be engaged with the latch block 34, so as to position the whole bracket 18. Therefore, winter jujubes which are shaken down by the picking mechanism 1 can directly fall on the open umbrella cloth below the jujube trees and then fall to the concave groove 19, and during actual operation, a basin can be placed at the concave groove 19 to contain the winter jujubes.
On the other hand, a piece of umbrella cloth is also arranged between the first umbrella rod 21 and the fifth inclined rod 25, between the fourth umbrella rod 24 and the sixth inclined rod 26, and between the fifth inclined rod 25 and the sixth inclined rod 26 respectively to receive the winter jujubes above the umbrella cloth, namely, the umbrella cloth is totally five pieces, the umbrella cloth between the fifth inclined rod 25 and the sixth inclined rod 26 is always in an open state, when the winter jujubes are not collected, the umbrella rods are in a closed state, so the other four pieces of umbrella cloth are all folded, when the winter jujubes are collected, the umbrella rods are opened, the other four pieces of umbrella cloth are also opened synchronously, and the five pieces of umbrella cloth surround the lower parts of the jujube trees.
After the collection is accomplished, the staff rotates locking lever 28 for sloping block 33 and fixture block 34 separation, and under the effect of spring 30, locking lever 28 resets, and under the effect of rope 31 and corresponding torsional spring, four umbrella poles also reset in step, finish the collection work, at last with picking mechanism 1 and collection mechanism 2 playback can, because picking mechanism 1 length is longer, can directly leave in the below of collecting mechanism 2, be convenient for store.
The utility model discloses a collection device is picked to portable winter jujube simple structure, convenient to use can realize that the high efficiency of winter jujube is picked, is collected the operation, is difficult for producing the epidermis to winter jujube to destroy moreover, and the degree of automation of picking, collecting the operation is higher, has alleviateed staff's intensity of labour, has fine practicality.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. Collection device is picked to portable winter jujube, its characterized in that: comprises a picking mechanism and a collecting mechanism which are of split type structures;
the picking mechanism comprises a front rod body and a rear rod body which are connected through a tooth cup, the tooth cup is in threaded fit with the rear rod body, the front rod body is tightly pressed and fixed in an inner cavity of the rear rod body, and the front rod body can freely move in the rear rod body after the tooth cup is separated from the rear rod body;
the front end of the front rod body is provided with a motor, the motor is connected with a paw shell through an eccentric block, and the paw shell vibrates in a reciprocating manner along the length direction of the front rod body and the rear rod body under the action of the motor and the eccentric block;
a plurality of L-shaped bent teeth are fixed on the paw shell, an anti-slip sleeve is fixed on each bent tooth, at least one needle roller bearing is sleeved on each anti-slip sleeve, and the needle roller bearings are used for forming rolling friction with winter jujubes during picking.
2. The portable winter jujube picking and collecting device as claimed in claim 1, wherein: the end part of the rear rod body comprises a locking section and an external thread section which are arranged in front and back, the locking section consists of a plurality of locking pieces with elasticity, the locking pieces are uniformly arranged in the circumferential direction of the rear rod body, and the front ends of the locking pieces are in an inverted hook shape;
the tooth cup comprises round platform section and the internal thread section of arranging from beginning to end, the stay is located in the round platform section, when the external thread section of the body of rod and the internal thread section of tooth cup are screwed gradually in the back, the round platform section extrudees the stay inwards.
3. The portable winter jujube picking and collecting device as claimed in claim 2, wherein: the connection of the circular table section and the internal thread section of the tooth cup is provided with a boss protruding inwards, and the boss corresponds to the inverted hook type front end of the locking sheet so as to prevent the rear rod body from being separated from the tooth cup.
4. The portable winter jujube picking and collecting device as claimed in claim 1, wherein: the collecting mechanism comprises
The support can move freely, and a concave groove for accommodating the jujube trees is formed in the front of the support;
the rope line stretching type umbrella cover is arranged on the support and can be folded at two sides of the support or unfolded when being used for collecting winter jujubes;
and the tooth-shaped locker is arranged on the bracket and is used for fixing the bracket when the winter jujubes are collected.
5. The portable winter jujube picking and collecting device as claimed in claim 4, wherein: the rope line stretching type umbrella surface comprises two groups which are arranged at two sides of the support, the two groups have the same structure and have height difference, and an overlapping area is formed between the two groups after the two groups are opened, so that the space below the jujube trees is completely covered;
each group of rope line stretching type umbrella fabric comprises two umbrella rods, the two umbrella rods are mounted on a support through bearings and can rotate in the horizontal plane, umbrella cloth is arranged between the two umbrella rods and between the umbrella rods and the support on the corresponding side, and the height of the outer side of the umbrella cloth is higher than that of the inner side of the umbrella cloth so as to ensure smooth collection of winter jujubes;
umbrella cloth with a high outer part and a low inner part is also arranged above the bracket, and when winter jujubes are collected, all the umbrella cloth surrounds the jujube trees for a circle.
6. The portable winter jujube picking and collecting device as claimed in claim 5, wherein: the bracket is provided with a locking rod, the front end of the locking rod extends into the concave groove and is fixedly provided with a push rod head, a spring sleeved on the locking rod is arranged between the push rod head and the bracket, and the push rod head is used for abutting against the jujube tree and compressing the spring when collecting winter jujubes;
the locking rod is provided with rope lines which are in one-to-one correspondence with the umbrella rods in a penetrating manner, the rope lines are wound around the stop levers on the two sides and are wound at the bottoms of the corresponding umbrella rods, and when the locking rod moves, the umbrella rods are driven to swing through the rope lines.
7. The portable winter jujube picking and collecting device as claimed in claim 6, wherein: the tooth-shaped locker comprises a plurality of inclined blocks arranged on the locking rod side by side and a clamping block arranged on the bracket;
the sloping blocks are installed on the locking rod through springs, all the sloping blocks and the clamping blocks are arranged oppositely, and when winter jujubes are collected, one sloping block is clamped with the clamping block, so that the umbrella rod is fixed.
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CN202020286856.0U CN212138439U (en) | 2020-03-10 | 2020-03-10 | Portable winter jujube picking and collecting device |
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CN202020286856.0U CN212138439U (en) | 2020-03-10 | 2020-03-10 | Portable winter jujube picking and collecting device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111296071A (en) * | 2020-03-10 | 2020-06-19 | 青岛理工大学 | Portable winter jujube picking and collecting device |
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2020
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN111296071A (en) * | 2020-03-10 | 2020-06-19 | 青岛理工大学 | Portable winter jujube picking and collecting device |
CN111296071B (en) * | 2020-03-10 | 2024-05-03 | 青岛理工大学 | Portable winter jujube picking and collecting device |
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