Plug tray conveying device of transplanter

Abstract

The utility model discloses a plug tray conveying device of a transplanter, which belongs to the field of plug tray conveying devices, solves the problem that the conventional driving mechanism is easy to wear when being exposed in a severe environment, and adopts the technical scheme that the plug tray conveying device mainly comprises a transmission device and a driving device, the driving device comprises a first driver and an output shaft in transmission connection with the chain wheel, the first driver is connected with a rocker arm, the rocker arm is connected with the output shaft through a one-way non-return bearing, a protruding block is arranged on the peripheral side of the rocker arm, the conveying device further comprises a limiting device, and the limiting device is provided with a first position and a second position. The limiting device limits the rotating angle of the rocker arm so that the conveying chain can move by the length of one hole. And when the limiting device is located at the second position, the limiting device relieves limitation on the rocker arm, so that the conveying chain moves by the length of two holes. The rocker arm limiting device is mainly used for reducing abrasion between the limiting device and the rocker arm.

Description

Technical Field

[0001] The utility model shows a plug tray conveying device for a transplanter, belonging to the technical field of plug tray conveying devices. Background Art

[0002] Transplanting seedlings using a transplanter's tray conveyor can reduce the seedling leakage rate, seedling injury rate, and labor intensity, and can also improve the seedling transplanting efficiency, thereby significantly reducing the seedling planting cost.

[0003] When the transplanter's plug tray conveying device is transporting seedlings, the conveying device drives the plug tray to move the distance of one plug position, so that the plug position of the plug tray is positioned at the clamping position of the conveying device for the clamping device to clamp the seedlings. However, there is a gap of one plug position between two adjacent plug trays on the conveying device. Therefore, when a plug tray completes clamping the seedlings, the conveying device needs to move the distance of two plug positions to achieve the purpose of skipping an empty plug position at the intersection of the two plug trays.

[0004] When the outer arc surface of the ratchet boss is disengaged from the locking block, the locking frame arm is reset, the locking block is stuck in the ratchet groove again, locking the seedling feeding ratchet, and the seedling feeding chain and the seedling tray complete the movement of two unit steps, so that the seedling taking device can cross the edge gap of two adjacent seedling trays and realize seedling taking.

[0005] However, in the above patent, since the use scenario of the conveying device is relatively harsh, and the ratchet friction pair is used in a harsh environment, mud and sand are easily attached between the ratchet pawls, which easily causes wear of the ratchet pawls, thereby causing the movement accuracy of the drive device to deteriorate, which will greatly shorten the service life of the drive device; in addition, the ratchet pawl drive device will generate greater impact and noise during operation, which will reduce the user experience. Utility Model Content

[0006] The purpose of the utility model is to solve the problem that the existing driving mechanism is easily worn when used in a harsh environment. To this end, a transplanter tray conveying device is provided, which can accurately control the movement stroke of the conveying device while reducing the wear between the limit device and the rocker arm.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A transplanter tray conveying device, the conveying device is provided with a transmission device for conveying the tray and a driving device for controlling the movement of the transmission device, the transmission device includes a sprocket and a conveying chain, the driving device drives the sprocket to rotate so that the conveying chain conveys the tray, the driving device includes a first driver and an output shaft connected to the sprocket transmission, the output end of the first driver is connected to a rocker arm, the rocker arm is connected to the output shaft through a one-way check bearing, a protrusion is provided on the outer peripheral side of the rocker arm, the conveying device also includes a limiting device, the limiting device has a first position and a second position, when the limiting device is in the first position, the limiting device limits the rotation angle of the rocker arm so that the conveying chain moves the length of one hole; when the limiting device is in the second position, the limiting device releases the restriction on the rocker arm so that the conveying chain moves the length of two holes.

[0009] The beneficial effects of adopting the utility model are:

[0010] The conveying device described in the utility model includes a driving device and a transmission device, the transmission device includes a sprocket and a conveying chain, the driving device includes a first driver and an output shaft, the first driver drives the sprocket to rotate through the output shaft to realize the conveying chain driving the hole tray to move, when the limit device is in the first position, the limit device limits the rotation angle of the rocker arm to make the conveying chain move the stroke of one hole, ensuring that the seedlings at each hole on the hole tray can be smoothly clamped, and when one hole tray is clamped, the limit device switches to the second position. At this time, the limit device releases the restriction on the rocker arm, so that the rocker arm can rotate a larger angle, so that the conveying chain can move the stroke of two holes, and the conveying device can cross the gap between the two hole trays to realize continuous seedling removal; in addition, the conveying device is controlled by the limiting cooperation of the limiting device and the rocker arm. The movement stroke of the conveyor chain, the limit device and the rocker arm are mainly in abutment cooperation, which can reduce the friction between the limit device and the rocker arm, so that the conveying device can better adapt to the field working environment, which helps to extend the service life of the conveying device; secondly, a one-way check bearing is provided between the rocker arm and the output shaft, so that the rocker arm drives the output shaft to rotate in only one direction, and the rocker arm rotates until it abuts against the limit device and then rotates in the opposite direction. At this time, the output shaft does not rotate with the rocker arm, thereby ensuring that the conveyor chain always keeps running in the same direction; furthermore, the rocker arm and the limit device only come into contact when they abut, and the contact time is not long, so no mud and sand are allowed to adhere between the rocker arm and the limit device, which can reduce the possibility of wear of the rocker arm and the limit device, so that the conveying device can better adapt to the field working environment, which helps to improve the adaptability of the conveying device.

[0011] Preferably, the limiting device includes a second driver and a limiting block, the second driver drives the limiting block to move closer to or away from the rocker arm, and when the limiting device is in the first position, the limiting block is close to the rocker arm, and the limiting block abuts against the protrusion to limit the rotation angle of the rocker arm.

[0012] Preferably, the output end of the second driver is provided with a connector, the second driver is hinged to the limit block through the connector, the conveying device is provided with a first positioning pin, and the limit block is provided with a limiting groove for sliding the first positioning pin, and the second driver drives the limit block to move so that the first positioning pin slides relative to the limiting groove.

[0013] Preferably, the limiting device also includes a positioning block, and the conveying device is provided with a second positioning pin. One end of the positioning block is hinged to the second positioning pin, and the other end is hinged to the limiting block and the connecting head through the same hinge axis. The end of the second drive away from the connecting head is hinged to the conveying device. When the limiting device is in the first position, the limiting block and the positioning block remain flush.

[0014] Preferably, the limiting device further comprises a mounting seat, the mounting seat is fixed to the conveying device, and the second driver is hinged to the mounting seat.

[0015] Preferably, the frame is provided with two sets of sprockets and conveyor chains, the sprockets include a driving sprocket and a driven sprocket, the conveyor chain is sleeved on the driving sprocket and the driven sprocket, and a roller for placing the hole tray is provided between the two conveyor chains.

[0016] Preferably, the conveyor chain includes a number of chain links spliced ​​together, some of the chain links are provided with outer chain plates, the outer chain plates are provided with at least one positioning hole, and both ends of the rollers are inserted into the positioning holes to fix the rollers to the conveyor chain.

[0017] Preferably, at least part of the outer link plates is provided with two positioning holes.

[0018] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a structural diagram of a plug tray conveying device for a transplanter according to the utility model;

[0021] Figure 2 This is a side view of a transplanter tray conveying device according to the utility model;

[0022] Figure 3 This is a side view of a transmission device in a transplanter tray conveying device of the utility model;

[0023] Figure 4 This is a schematic structural diagram of a limiting device and a driving device in a plug tray conveying device of a transplanter according to the present invention;

[0024] Figure 5This is a front view of a limiting device in a plug tray conveying device of a transplanter according to the present invention when it is in the second position;

[0025] Figure 6 This is a structural schematic diagram of a transplanter tray conveying device according to the utility model when the limiting device is in the first position;

[0026] Figure 7 This is a front view of a limiting device in a transplanter tray conveying device of the utility model when it is in a first position.

[0027] Figure numerals: 1, transmission device; 11, sprocket; 111, driving sprocket; 112, driven sprocket; 12, conveyor chain; 121, outer link plate; 122, positioning hole; 21, first drive; 22, rocker arm; 221, protrusion; 222, check bearing; 23, mounting seat; 31, second drive; 311, connector; 32, limit block; 321, limit groove; 322, first positioning pin; 33, positioning block; 331, second positioning pin; 4, acupuncture point; 41, acupuncture point; 42, groove. DETAILED DESCRIPTION

[0028] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless expressly limited otherwise.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0032] like Figures 1 to 7 As shown, this embodiment shows a transplanter hole tray 4 conveying device, the conveying device is provided with a limiting device, a transmission device 1 for conveying the hole tray 4 and a driving device for controlling the movement of the transmission device 1, wherein the transmission device 1 includes a sprocket 11 and a conveying chain 12, and two sets of sprockets 11 and conveying chains 12 are provided on the frame, the sprocket 11 includes a driving sprocket 111 and a driven sprocket 112, the conveying chain 12 is sleeved on the driving sprocket 111 and the driven sprocket 112, and a number of rollers for placing the hole tray 4 are provided between the two conveying chains 12, the driving device includes a first driver 21 and an output shaft connected to the driving sprocket 111, the output end of the first driver 21 is connected to a rocker arm 22, and the rocker arm 22 is connected to the output shaft through a one-way check bearing 222. In addition, in this embodiment, the first driver 21 is a cylinder, and the output end of the first driver 21 is connected to the rocker arm 22. The arm 22 is rotatably connected. After the first driver 21 is started, the output end of the first driver 21 extends, thereby driving the rotation of the rocker arm 22. The inner ring and outer ring of the one-way check bearing 222 keep rotating synchronously in the direction of rotation, and then the rocker arm 22 can drive the output shaft to rotate, so that the sprocket 11 rotates, the sprocket 11 drives the conveyor chain 12 to move, and the roller moves with the conveyor chain 12 and drives the hole tray 4 to move; and in the process of retraction of the output end of the first driver 21, the first driver 21 drives the rocker arm 22 to rotate in the opposite direction. The inner ring and outer ring of the one-way check bearing 222 can rotate relative to each other in the direction of rotation, and then the output shaft does not rotate with the rocker arm 22. At this time, the sprocket 11 and the conveyor chain 12 remain stationary until the rocker arm 22 rotates to the initial position; the first driver 21 repeats the above movement to make the conveyor chain 12 always keep running in the same direction, thereby realizing the transportation of the hole tray 4.

[0033] The limiting device described in this embodiment has a first position and a second position. When the limiting device is in the first position, the limiting device limits the rotation angle of the rocker arm 22 so that the conveyor chain 12 moves the length of one acupoint 41; when the limiting device is in the second position, the limiting device releases the restriction on the rocker arm 22 so that the conveyor chain 12 moves the length of two acupoints 41.

[0034] The conveying device described in this embodiment includes a driving device and a transmission device. The transmission device 1 includes a sprocket 11 and a conveying chain 12. The driving device includes a first driver 21 and an output shaft. The first driver 21 drives the sprocket 11 to rotate through the output shaft to realize that the conveying chain 12 drives the hole tray 4 to move. When the limiting device is in the first position, the limiting device limits the rotation angle of the rocker arm 22 so that the conveying chain 12 moves the stroke of one hole position 41, ensuring that the seedlings in each hole position 41 on the hole tray 4 can be smoothly clamped. When a hole tray 4 is clamped, the limiting device switches to the second position. At this time, the limiting device releases the restriction on the rocker arm 22, so that the rocker arm 22 can rotate a larger angle, so that the conveying chain 12 can move the stroke of two holes 41, and the conveying device can cross the gap between the two hole trays 4 to realize continuous seedling removal. In addition, the conveying device is limited by the limiting device and the rocker arm 22 The rocker arm 22 and the limit device are in contact with each other, and the contact time is not long. Therefore, no mud or sand is allowed to adhere between the rocker arm 22 and the limit device, which can reduce the possibility of wear of the rocker arm 22 and the limit device, so that the conveying device can better adapt to the field working environment and help to extend the service life of the conveying device. Secondly, a one-way check bearing 222 is provided between the rocker arm 22 and the output shaft, so that the rocker arm 22 drives the output shaft to rotate only in one direction. After the rocker arm 22 rotates to abut against the limit device, it rotates in the opposite direction. At this time, the output shaft does not rotate with the rocker arm 22, thereby ensuring that the conveying chain 12 always keeps running in the same direction. Furthermore, the rocker arm 22 and the limit device only come into contact when they abut, and the contact time is not long. Therefore, no mud or sand is allowed to adhere between the rocker arm 22 and the limit device, which can reduce the possibility of wear of the rocker arm 22 and the limit device, so that the conveying device can better adapt to the field working environment and help to improve the adaptability of the conveying device.

[0035] The limiting device described in this embodiment includes a mounting seat 23, a second driver 31, a limiting block 32 and a positioning block 33, wherein the mounting seat 23 is fixed to the frame of the conveying device, and the output end of the second driver 31 is provided with a connecting head 311, and the second driver 31 is hinged to the limiting block 32 and the positioning block 33 through the connecting head 311, and the limiting block 32 and the positioning block 33 are hinged to the connecting head 311 through the same hinge axis, and the end of the second driver 31 away from the connecting head 311 is hinged to the mounting seat 23, and a first positioning pin 322 and a second positioning pin 331 are provided on the frame, wherein the second positioning pin 331 is hinged to the positioning block 33, and a limiting groove 321 for the first positioning pin 322 to slide is provided on the limiting block 32, and the second driver 31 drives the limiting block 32 to move so that the first positioning pin 322 slides relative to the limiting groove 321.

[0036] When the locking cam 331 is in the locked state, the locking cam 331 is in the locked state, and the first and second locking cams 332 are in the locked state, so that the locking cam 331 can be locked directly to the locking cam 332. The protrusion 221, wherein the output end of the first driver 21 is hinged to the connecting end of the rocker arm 22. After the first driver 21 is started, the output end of the first driver 21 extends out and drives the rocker arm 22 to rotate through the connecting end. During the rotation of the rocker arm 22, the end of the limit block 32 will abut against the protrusion 221, so that the output end of the first driver 21 cannot be fully extended, thereby limiting the rotation angle of the rocker arm 22, so that the conveyor chain 12 drives the hole tray 4 to move a hole 41, so that the seedlings in each hole 41 can be clamped, thereby effectively reducing the possibility of missing seedlings and making the transplanting of seedlings more reliable.

[0037] When the seedlings in one hole tray 4 are clamped, there is a gap between the two adjacent hole trays 4 in the conveying device. The length of the edge of the hole tray 4 and the gap is close to the length of one hole position 41. In order to avoid the lack of seedlings in the subsequent process due to the clamping device clamping the empty space, the conveying chain 12 needs to move the travel of the two holes positions 41 to cross the gap between the two adjacent hole trays 4 and realize normal seedling removal. In this embodiment, when the seedlings in one hole tray 4 are clamped, the limit device switches from the first position to the second position. During this process, the connecting head 311 of the second driver 31 descends, and the positioning block 33 rotates around the connecting head 311 under the action of the connecting head 311 and the second positioning pin 331. The limiting block 32 rotates around the connecting head 311 under the action of the connecting head 311 and the first positioning pin 322, and the first positioning pin 322 is relatively limited. The block 32 slides along the limit groove 321, and the limit block 32 moves away from the end of the connecting head 311 and gradually moves away from the rocker arm 22. At this time, the limit block 32 and the positioning block 33 are in a V shape; when the limit device is in the second position, the output end of the first driver 21 extends and drives the rocker arm 22 to rotate through the connecting end. During the rotation of the rocker arm 22, the limit block 32 will not contact the protrusion 221. The limit device releases the restriction on the rocker arm 22, and then the output end of the first driver 21 can be fully extended to maximize the rotation angle of the rocker arm 22. At this time, the rocker arm 22 drives the output shaft to rotate, and the output shaft drives the conveyor chain 12 to move through the active sprocket 111, and the conveyor chain 12 drives the hole tray 4 to move the formation of two holes 41, thereby achieving the effect of crossing the gap between the two adjacent hole trays 4 and realizing normal seedling removal to ensure the supply of transplanted seedlings.

[0038] It should be noted that, in other embodiments, the limiting device may also include only a second driver 31 and a limiting block 32, wherein the limiting block 32 is fixed to the output end of the second driver 31, and the second driver 31 drives the limiting block 32 close to the rocker arm 22 so that the limiting device reaches the first position, and the second driver 31 drives the limiting block 32 away from the rocker arm 22 so that the limiting device reaches the second position.

[0039] In addition, the hole tray 4 described in this embodiment is formed by arranging multiple holes 41, and the width of the holes 41 gradually decreases from top to bottom, so there is a groove 42 between two adjacent holes 41. After the hole tray 4 is placed on the conveying device, the roller is embedded in the groove 42, and multiple rollers are embedded in the bottom of a hole tray 4 so that the rollers support the hole tray 4. At the same time, two conveying chains 12 are fixed at both ends of the rollers. The rollers drive the hole tray 4 to move as the conveying chain 12 moves, so as to realize the transportation of the hole tray 4.

[0040] The conveyor chain 12 described in this embodiment is formed by a ring chain by splicing multiple chain links, and some chain links are provided with outer chain plates 121, and the outer chain plates 121 are provided with positioning holes 122 for fixing rollers. Since the spacing between the chain links is in English size, it does not match the spacing between the grooves 42 at the bottom of the hole tray 4. Therefore, when the hole tray 4 is placed on the roller, it is easy for the roller to not be completely embedded in the groove 42, resulting in the hole tray 4 being unable to be placed stably; and in this embodiment, some of the outer chain plates 121 in the conveyor chain 12 are provided with a positioning hole 122, and another part of the outer chain plates 121 are provided with two positioning holes 122, and the spacing between adjacent two outer chain plates 121 is not fixed. By equipping outer chain plates 121 with non-fixed spacing and adjusting the positions of the positioning holes 122 of the rollers on the outer chain plates 121, the spacing between adjacent two rollers can be adjusted, so that the spacing between the rollers can match the spacing between the grooves 42 at the bottom of the hole tray 4 to a certain extent, so that the placement of the hole tray 4 can be more stable, which helps to improve the feeding accuracy of the conveying device.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the drawings and the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A transplanter tray conveyor device, comprising a frame, a transmission device for conveying the tray, and a drive device for controlling the movement of the transmission device, the transmission device comprising a sprocket and a conveyor chain, the drive device driving the sprocket to rotate so that the conveyor chain conveys the tray, characterized in that: The driving device includes a first driver and an output shaft connected to the sprocket transmission. The output end of the first driver is connected to a rocker arm, which is connected to the output shaft through a one-way check bearing. A protrusion is provided on the outer peripheral side of the rocker arm. The conveying device also includes a limit device, which has a first position and a second position. When the limit device is in the first position, the limit device limits the rotation angle of the rocker arm so that the conveying chain moves a stroke of one acupoint; when the limit device is in the second position, the limit device releases the restriction on the rocker arm so that the conveying chain moves a stroke of two acupoints.

2. A transplanter tray conveying device according to claim 1, characterized in that: The limiting device includes a second driver and a limiting block. The second driver drives the limiting block to move closer to or away from the rocker arm. When the limiting device is in the first position, the limiting block is close to the rocker arm, and the limiting block abuts against the protrusion to limit the rotation angle of the rocker arm.

3. A transplanter tray conveying device according to claim 2, characterized in that: The output end of the second driver is provided with a connector, the second driver is hinged to the limit block through the connector, the conveying device is provided with a first positioning pin, and the limit block is provided with a limiting groove for sliding the first positioning pin, and the second driver drives the limit block to move so that the first positioning pin slides relative to the limiting groove.

4. The transplanter tray conveying device according to claim 3, characterized in that: The limiting device also includes a positioning block, and the conveying device is provided with a second positioning pin. One end of the positioning block is hinged to the second positioning pin, and the other end is hinged to the limiting block and the connecting head through the same hinge axis. The end of the second drive away from the connecting head is hinged to the conveying device. When the limiting device is in the first position, the limiting block and the positioning block remain flush.

5. The transplanter tray conveying device according to claim 4, characterized in that: The limiting device also includes a mounting seat, which is fixed to the conveying device, and the second driver is hinged to the mounting seat.

6. The transplanter tray conveying device according to claim 1, characterized in that: The transmission device also includes a frame, which is provided with two sets of sprockets and a conveyor chain. The sprockets include a driving sprocket and a driven sprocket. The conveyor chain is sleeved on the driving sprocket and the driven sprocket. A roller for placing the hole tray is provided between the two conveyor chains.

7. The transplanter tray conveying device according to claim 6, characterized in that: The conveyor chain includes a plurality of chain links connected to each other, some of the chain links are provided with outer chain plates, and the outer chain plates are provided with at least one positioning hole. The two ends of the roller are inserted into the positioning hole to fix the roller and the conveyor chain.

8. The transplanter tray conveying device according to claim 7, characterized in that: At least part of the outer link plates is provided with two positioning holes.

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