CN109673324B - Machine for spreading plates in field - Google Patents

Machine for spreading plates in field Download PDF

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Publication number
CN109673324B
CN109673324B CN201910007933.6A CN201910007933A CN109673324B CN 109673324 B CN109673324 B CN 109673324B CN 201910007933 A CN201910007933 A CN 201910007933A CN 109673324 B CN109673324 B CN 109673324B
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China
Prior art keywords
tray
fixed
frame
wheel
pallet
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CN201910007933.6A
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CN109673324A (en
Inventor
王健
徐宾
杜小强
徐瞻泓
夏旭东
陈建能
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/029Receptacles for seedlings
    • A01G9/0293Seed or shoot receptacles
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/08Devices for filling-up flower-pots or pots for seedlings; Devices for setting plants or seeds in pots
    • A01G9/088Handling or transferring pots

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
  • Handcart (AREA)

Abstract

The invention discloses a field plate paving machine. The workload of manually paving the seedling raising tray is large, and the field operation environment makes people more fatigued. The invention comprises a ridge power guide rail, a ridge auxiliary guide rail, a longitudinal moving device and a pallet paving trolley. The longitudinal moving device comprises a Hall sensor, a moving guide rail, a connecting frame, a supporting frame, a first speed reducing motor, a second speed reducing motor, a middle wheel and a side wheel set. The pallet paving trolley comprises a frame, a wheel shaft, a transverse moving driving piece, a position adjusting mechanism, a pallet clamping mechanism, a lifting mechanism and wheels. The position adjusting mechanism comprises an adjusting block, a hand wheel, a screw rod and a handle. The tray clamping mechanism comprises a tray placing driving assembly, a tray laying frame and a clamping jaw assembly. The tray clamping mechanism comprises a tray placing driving assembly, a tray laying frame and a clamping jaw assembly. The invention adopts the cam to drive the chuck jaws, the telescopic reciprocating motion of the chuck jaws realizes the one-by-one laying action of a pile of seedling raising trays, the structure is compact, the motion is reliable, and the reliability of laying trays is greatly improved.

Description

Machine for spreading plates in field
Technical Field
The invention belongs to the technical field of agricultural auxiliary machinery, and particularly relates to a field plate paving machine.
Background
With the development of agricultural production mechanization in China, precision seeding automatic production lines are mostly adopted for rice seedling raising, so that the seedling quality is improved. The soil covering, sowing and soil covering are finished in the seedling raising tray through an automatic seedling raising assembly line. Then putting the seedlings in a dark room for centralized heat preservation and moisture preservation, and sprouting. After seedlings emerge regularly in a darkroom, the seedlings are manually transported to a seedling hardening greenhouse or a seedling bed for secondary seedling raising, the labor intensity is high in the process, the requirement on labor force is high, and a mechanical device is urgently needed to replace manpower to complete tray laying work.
Some tray laying equipment is already available in the market at present, but most of the seedling raising machines combine an automatic seedling raising production line with a tray. Firstly, manually placing seedling raising trays into a feeding hole of a seedling raising machine, completing the seeding of rice through an inclined conveying belt and three hoppers above the conveying belt, and finally placing the seeded seedling raising trays into a seedling field along with the walking of the seedling raising machine in the field. The seedling raising machine still needs to be manually loaded on the tray one by one, and the work of laying a whole pile of seedling raising trays cannot be completed.
Disclosure of Invention
The invention aims to provide a field pallet laying machine.
The invention comprises a ridge power guide rail, a ridge auxiliary guide rail, a longitudinal moving device and a pallet paving trolley. The ridge auxiliary guide rail and the two ridge power guide rails are arranged along the ridge direction. The ridge auxiliary guide rail is fixed between two adjacent ridge fields. Two ridge guide rails are respectively fixed on two sides of the two ridges of fields.
The longitudinal moving device comprises a Hall sensor, a moving guide rail, a connecting frame, a supporting frame, a first speed reducing motor, a second speed reducing motor, a middle wheel and a side wheel set. One end of each movable guide rail is fixed with the two ends of one connecting frame, and the other end of each movable guide rail is fixed with the two ends of the other connecting frame. The side wheel set comprises two side wheels. Two side wheels in one side wheel set are respectively supported at one end of the two moving guide rails. Two side wheels in the other side wheel set are respectively supported at the other ends of the two moving guide rails. The first speed reducing motor and the second speed reducing motor are respectively fixed with two ends of one of the movable guide rails. An output shaft of the first speed reduction motor is fixed with one side wheel in one of the side wheel sets. And an output shaft of the second speed reducing motor is fixed with one side wheel in the other side wheel set. The two ends of the supporting frame are respectively fixed with the middle parts of the two movable guide rails. The two middle wheels are respectively supported at two ends of the supporting frame. The two middle wheels are in rolling contact with the ridge auxiliary guide rail. The side wheels in the two side wheel sets are in rolling contact with the two ridge-direction power guide rails respectively. The four Hall sensors are sequentially arranged and fixed on one of the movable guide rails. Wherein two hall sensors are located one side of support frame. And the other two Hall sensors are positioned on the other side of the support frame.
The pallet paving trolley comprises a frame, a wheel shaft, a transverse moving driving piece, a position adjusting mechanism, a pallet clamping mechanism, a lifting mechanism and wheels. Two wheel shafts are respectively supported on two sides of the frame. Wheels are fixed at both ends of the two wheel shafts. The wheels at the two ends of the wheel shaft are respectively in rolling contact with the two movable guide rails. One of the axles is driven by a traverse drive.
The lifting mechanism comprises a lifting driving piece, a lifting frame, a lifting block and a screw rod. The lifting frame is fixed on the frame. The lead screw is supported on the lifting frame. The lead screw is driven by a lifting driving piece. The lifting block and the lifting frame form a sliding pair. The first nut fixed on the lifting block and the screw rod form a screw pair.
The position adjusting mechanism comprises an adjusting block, a hand wheel, a screw rod and a handle. The bottom end of the screw rod penetrates through the lifting block and forms a revolute pair with the lifting block. The handle and the bottom end of the screw rod form a screw pair. The second nut fixed on the adjusting block and the screw form a screw pair. The hand wheel is fixed with the top end of the screw rod.
The tray clamping mechanism comprises a tray placing driving assembly, a tray laying frame and a clamping jaw assembly. The tray laying frame consists of an inner plate and two side plates. The inner ends of the two side plates are respectively fixed with the two ends of the inner plate. The inner plate is fixed with the adjusting block. The pallet frame and the vehicle frame form a sliding pair. The claw assemblies are two in total. The two jaw assemblies are respectively arranged at the bottoms of the two side plates.
The jack catch subassembly hold the pivot and tray jack catch including holding tightly the sub-spare, holding tightly. The clasping rotating shaft is supported at the bottom of the corresponding side plate. The holding sub-piece comprises a holding claw and a cam. The clasping claws and the corresponding side plates form a sliding pair. A cam cavity is arranged in the clasping claw. The cams are all fixed with the clasping rotating shaft. The cam is disposed within the cam cavity. The working contour of the cam and the inner side surface of the cam cavity form a cam pair. And a linkage block is fixed at the bottom of the holding claw. N holding sub-pieces are arranged in one clamping jaw assembly, and n is more than or equal to 1 and less than or equal to 5. The n holding sub-pieces are arranged in sequence. The tray jaws and the bottom of the corresponding side plate form a revolute pair. The inner edge of the tray claw is provided with a linkage strip. The linkage strip is contacted with the linkage block in the holding sub-piece. The tray jack catch is located and embraces the under of the sub-piece tightly.
Furthermore, the outer edge of the tray claw is provided with a clamping strip which is integrally formed with the tray claw.
Further, under the state of holding the claw retraction in the son of holding tightly, the linkage piece supports the linkage strip for the medial surface of tray jack catch keeps the level, and the card strip is towards directly over. Under the state that the holding claw in the holding sub-piece retracts, the linkage block loosens the linkage strip, and the tray claw is in an inclined state.
Furthermore, the distance between the two side plates is equal to the width of the seedling raising tray to be paved.
Further, the traverse driving member includes a third motor, a driving gear and a driven gear. The driven gear is fixed with one of the wheel shafts. The third motor is fixed with the frame. An output shaft of the third motor is fixed with the driving gear. The driving gear is meshed with the driven gear.
The lifting driving piece comprises a fourth motor, a synchronous belt wheel and a synchronous belt. And the fourth motor is fixed on the frame. And the two synchronous belt wheels are respectively fixed with the screw rod and the output shaft of the fourth motor. The two synchronous pulleys are connected through a synchronous belt.
Further, the tray placing driving assembly comprises a fifth motor, a driving chain wheel, a driven chain wheel and a chain. The two driven sprockets and the two clamping jaw assemblies are internally and tightly held with the rotating shaft respectively and fixedly. The fifth motor is fixed on the pallet frame. And an output shaft of the fifth motor is fixed with the driving chain wheel. The driving chain wheel is connected with the two driven chain wheels through a chain.
Further, the pallet trolley also comprises a three-hole button box. The three-hole button box is provided with a start button, an emergency stop button and a direction knob. There are two three-hole button boxes. Two three-hole button boxes are respectively arranged on two sides of the frame.
Further, the side of the holding claw far away from the corresponding side plate is provided with a clamping plate integrally formed with the holding claw.
The invention has the beneficial effects that:
1. the invention has the advantages of rich laying path and flexible movement by the longitudinally moving device and the transversely moving laying tray trolley, and can be suitable for different laying tray rice seedling beds.
2. According to the invention, the position of the tray is accurately determined through the Hall sensor, the control difficulty is reduced, and the quality of the tray is improved.
3. According to the invention, the initial calibration is carried out by adopting manual height adjustment in the initial height of the tray laying trolley and the seedling bed, so that the falling distance of the seedling raising tray can be kept constant in the fields with different heights by the tray laying trolley, the seedling raising tray can stably fall, and the seedling in the seedling raising tray is not damaged.
4. The invention adopts the cam to drive the chuck jaws, the telescopic reciprocating motion of the chuck jaws realizes the one-by-one laying action of a pile of seedling raising trays, the structure is compact, the motion is reliable, and the reliability of laying trays is greatly improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a first perspective view of the pallet truck of the present invention;
FIG. 3 is a second perspective view of the pallet truck of the present invention;
FIG. 4 is a schematic view of the assembly of the position adjustment mechanism, the lifting mechanism and the pallet frame of the present invention;
figure 5 is a schematic view of the jaw assembly of the present invention.
FIG. 6 is a schematic view of the tray claw of the tray hand-clamping mechanism of the present invention holding the seedling tray;
fig. 7 is a schematic view of the tray claw of the tray clamping mechanism for loosening the seedling raising tray.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in figure 1, the field pallet paving machine comprises a ridge-direction power guide rail 31, a ridge-direction auxiliary guide rail 32, a longitudinal moving device and a pallet paving trolley 2. The ridge auxiliary guide rail 32 and the two ridge power guide rails 31 are arranged along the ridge direction of the field. The ridge auxiliary guide rail 32 is fixed between two adjacent ridge fields. The two ridge guide rails are respectively fixed on two sides of the two ridges of the field (namely, the ridge auxiliary guide rail 32 and the two ridge power guide rails 31 are respectively fixed between three adjacent ridges).
The longitudinal moving device comprises a Hall sensor 33, a moving guide rail 1, a connecting frame, a supporting frame 7, a first speed reducing motor 3, a second speed reducing motor 4, a middle wheel 5 and a side wheel set. Two movable guide rails 1 are arranged at intervals, one end of each movable guide rail is fixed to two ends of one connecting frame, and the other end of each movable guide rail is fixed to two ends of the other connecting frame. The side wheel set comprises two side wheels 6. The two side wheels 6 in one of the side wheel sets are supported at one end of the two moving guide rails 1. The two side wheels 6 in the other side wheel group are respectively supported at the other ends of the two moving guide rails 1. The first speed reduction motor 3 and the second speed reduction motor 4 are respectively fixed with two ends of one moving guide rail 1. The output shaft of the first reduction motor 3 is fixed with one side wheel 6 in one of the side wheel sets. The output shaft of the second reduction motor 4 is fixed with one side wheel 6 in the other side wheel set. The two ends of the supporting frame 7 are respectively fixed with the middle parts of the two movable guide rails 1. The two intermediate wheels 5 are respectively supported at both ends of a support frame 7. Both intermediate wheels 5 are in rolling contact with the ridge auxiliary rail 32. The side wheels 6 in the two side wheel sets are respectively in rolling contact with the two ridge-direction power guide rails 31.
The four hall sensors 33 are sequentially arranged and fixed on one of the moving guide rails. Two hall sensors 33 are located on one side of the supporting frame 7, and respectively correspond to the tray placing positions on two sides of one ridge of land (i.e. can indicate the tray placing trolley 2 to start or stop placing the tray). The other two Hall sensors 33 are positioned at the other side of the support frame 7 and respectively correspond to the tray placing positions at two sides of the other ridge of the field.
As shown in fig. 2 and 3, the pallet truck 2 includes a frame 34, an axle, a traverse driving member, a position adjusting mechanism 8, a pallet chucking mechanism 9, a lifting mechanism, a three-hole button box 11, and wheels 12. The two axles are supported on either side of the frame 34. Wheels 12 are fixed at both ends of the two wheel shafts. The wheels 12 at the two ends of the wheel shaft are respectively in rolling contact with the two moving guide rails 1. The traverse drive comprises a third motor 14, a driving gear and a driven gear 13. The driven gear is fixed with one of the wheel shafts. The third motor 14 is fixed to the frame 34. The output shaft of the third motor 14 is fixed to the drive gear. The drive gear meshes with the driven gear 13.
The three-hole button box 11 is provided with a start button, an emergency stop button and a direction knob. The three-hole button casing 11 has two. Two three-hole button boxes 11 are respectively provided on both sides of the carriage 34.
As shown in fig. 2, 3 and 4, the lifting mechanism includes a fourth motor 15, a timing pulley 17, a timing belt 16, a lifting frame 35, a lifting block 25 and a lead screw 18. The fourth motor 15 and the lifting frame 35 are fixed on the frame 34. The threaded spindle 18 is supported on a crane 35. The two synchronous pulleys 17 are fixed to the screw 18 and the output shaft of the fourth motor 15, respectively. The two timing pulleys 17 are connected by a timing belt 16. The lifting block 25 and the lifting frame 35 form a sliding pair. The lifting block 25 and the lifting frame 35 form a sliding pair. The first nut fixed to the lifting block 25 and the screw 18 form a screw pair.
The position adjustment mechanism 8 includes an adjustment block 36, a hand wheel 23, a screw 24, and a handle 26. The bottom end of the screw 24 passes through the lifting block 25 and forms a rotating pair with the lifting block 25. The threaded through hole formed at the inner end of the handle 26 and the bottom end of the screw 24 form a screw pair. The second nut fixed on the adjusting block 36 and the screw 24 form a screw pair. The hand wheel 23 is fixed to the top end of the screw 24.
As shown in fig. 2, 3 and 5, the tray chucking mechanism 9 includes a disc placing drive assembly, a disc laying frame 10 and a claw assembly. The pallet frame 10 is composed of an inner plate and two side plates. The inner ends of the two side plates are respectively fixed with the two ends of the inner plate. The inner plate is fixed to the adjustment block 36. The distance between the two side plates is equal to the width of the seedling raising tray to be paved. And sliding blocks are fixed on the outer side surfaces of the two side plates. The two sliding blocks and the two sliding rails 19 fixed on the frame 34 form sliding pairs respectively. The claw assemblies are two in total. The two jaw assemblies are respectively arranged at the bottoms of the two side plates.
As shown in fig. 5, 6 and 7, the jaw assembly includes a clasping sub-member, clasping spindles 37 and pallet jaws 30. The clasping rotating shaft 37 is supported at the bottom of the corresponding side plate. The clasping sub-member comprises a clasping claw 28 and two cams 27. The clasping claws 28 and the corresponding side plate form a sliding pair which slides along the direction vertical to the inner side surface of the side plate. Two cam cavities are formed in the clasping claw 28. Both cams 27 are fixed to the clasping rotating shaft 37. Two cams 27 are respectively disposed in the two cam cavities. The working profile of the cam 27 and the inner side of the cam cavity constitute a cam pair. The reciprocating sliding of the clasping claws 28 can be realized by the rotation of the clasping rotary shaft 37. The side of the clasping claw 28 far away from the corresponding side plate is provided with a clamping plate which is integrally formed with the clasping claw 28. A linkage block 29 is fixed to the bottom of the clasping claw 28. Two holding sub-pieces are arranged in one clamping jaw component. The two holding sub-pieces are arranged at intervals.
The tray claws 30 form a revolute pair with the bottom of the corresponding side plate. The outer edge of the inner side surface of the tray claw 30 is provided with a clamping strip 30-2 which is integrally formed with the tray claw 30. The clamping strips 30-2 are towards the right upper part and are convenient to clamp into the bottom of the seedling raising tray, and the stability of the seedling raising tray in the supporting mode is enhanced. The inner edge of the inner side surface of the tray claw 30 is provided with a linkage strip 30-1 which is integrally formed with the tray claw 30. The linkage bar 30-1 contacts the linkage block 29 in the clasping sub-member. The tray claws 30 are located directly below the clasping sub-members.
In the retracted state of the holding claws 28 in the holding sub-member, the link block 29 abuts against the link strip 30-1, so that the inner side surfaces of the pallet claws 30 are kept horizontal and the clip strip 30-2 faces directly upward. At this time, the distance between the two tray claws 30 is smaller than the width of the seedling raising tray, and the effect of supporting the seedling raising tray can be achieved. In the state in which the clasping claws 28 in the clasping sub-members are retracted, the link blocks 29 release the link strips 30-1 and the pallet claws 30 are turned down to an inclined state by the action of gravity. At this time, the seedling raising tray is clamped by the clamping claws 28 in the two jaw assemblies.
The tray placing driving assembly includes a fifth motor 22, a driving sprocket, a driven sprocket 20 and a chain 21. The two driven sprockets 20 are respectively fixed with the two jaw assemblies in the clasping rotating shaft 37. The fifth motor 22 is fixed to the pallet frame 10. The output shaft of the fifth motor 22 is fixed to the drive sprocket. The driving sprocket is connected to two driven sprockets 20 by a chain 21.
The working principle of the field pallet paving machine is as follows:
step one, moving the pallet paving trolley to one end of the movable guide rail, so that the four Hall sensors are positioned on the same side of the pallet paving trolley. The four Hall sensors are a first Hall sensor, a second Hall sensor, a third Hall sensor and a fourth Hall sensor in sequence according to the distance between the four Hall sensors and the pallet trolley.
The fourth motor 15 is reversed so that the elevator block moves to the lower limit position. The handle 26 is rotated to remove the handle 26 from the threaded rod 24. The hand wheel 23 is rotated, the screw rod drives the adjusting block 36 to slide up and down, so that the distance between the tray clamping jaws 30 and the field is smaller than 25 mm. The handle 26 is then screwed onto the bottom end of the screw. So that the handle 26 presses the lifting block to ensure that the screw cannot rotate.
And step two, the fourth motor 15 rotates positively to move the lifting block to the upper limit position. The fifth motor 22 is rotated so that the gripping dogs 28 in both jaw assemblies are retracted. The user places a stack of trays on the tray jaws 30 in the two jaw assemblies.
And step three, the third motor rotates positively to enable the pallet paving trolley 2 to move from one end of the movable guide rail 1 to the other end. When the first hall sensor 33 detects the pallet jack, the third motor stops, and at this point, the pallet jack 30 in both jack catch assemblies reaches one side edge of a ridge of the field.
And step four, the fourth motor 15 rotates reversely, so that the lifting block moves to the lower limit position.
And step five, the fifth motor 22 rotates to push out the holding claws 28 in the two claw assemblies, and the tray claws 30 in the two claw assemblies turn downwards. The seedling raising tray located at the lowest position falls down to the field. The seedling raising tray located at the next lower position is clamped by the clamping claws 28 in the two jaw assemblies and becomes a new lowermost seedling raising tray.
And step six, the fifth motor 22 rotates, so that the holding claws 28 in the two claw assemblies retract, and the pallet claws 30 in the two claw assemblies turn upwards. The clasping claws 28 in the two jaw assemblies loosen the seedling raising tray, and the seedling raising tray falls onto the tray jaws 30 in the two jaw assemblies. Simultaneously, the fourth motor 15 rotates forward, so that the lifting block moves to the upper limit position. And entering the step seven.
And step seven, if the second Hall sensor 33 detects the pallet trolley, entering step eight. If the fourth hall sensor 33 detects a pallet dolly, the process proceeds to step nine. If no Hall sensor 33 detects the tray-laying trolley, the third motor rotates positively to enable the tray-laying trolley 2 to move by the width of one seedling raising tray, then the third motor stops rotating, and the steps from four to six are repeatedly executed.
And step eight, the third motor rotates forwards until the third Hall sensor 33 detects the pallet trolley. And then the third motor stops rotating, and the steps from four to seven are repeatedly executed.
And step nine, reversely rotating the third motor, so that the pallet truck returns to the initial position (namely the position in the step one) on the movable guide rail 1. Meanwhile, the first speed reducing motor and the second speed reducing motor rotate forwards synchronously, so that the longitudinal moving device moves for a distance of one seedling raising tray length along the ridge power guide rail 31. And then, the first speed reducing motor and the second speed reducing motor synchronously stop rotating. The user places a stack of trays on the tray jaws 30 in the two jaw assemblies. And then repeating the steps from four to eight.

Claims (8)

1. A field pallet laying machine comprises a ridge power guide rail, a ridge auxiliary guide rail, a longitudinal moving device and a pallet laying trolley; the method is characterized in that: the ridge auxiliary guide rail and the two ridge power guide rails are arranged along the ridge direction; the ridge direction auxiliary guide rail is fixed between two adjacent ridge fields; two ridge guide rails are respectively fixed on two sides of the two ridges of fields;
the longitudinal moving device comprises a Hall sensor, a moving guide rail, a connecting frame, a supporting frame, a first speed reducing motor, a second speed reducing motor, a middle wheel and two side wheel sets; one end of each movable guide rail is fixed with two ends of one connecting frame, and the other end of each movable guide rail is fixed with two ends of the other connecting frame; the side wheel set comprises two side wheels; two side wheels in one side wheel set are respectively supported at one end of the two movable guide rails; two side wheels in the other side wheel set are respectively supported at the other ends of the two movable guide rails; the first speed reducing motor and the second speed reducing motor are respectively fixed with two ends of one of the movable guide rails; an output shaft of the first speed reducing motor is fixed with one side wheel in one of the side wheel sets; an output shaft of the second speed reducing motor is fixed with one side wheel in the other side wheel set; two ends of the supporting frame are respectively fixed with the middle parts of the two movable guide rails; the two middle wheels are respectively supported at two ends of the supporting frame; the two middle wheels are in rolling contact with the ridge auxiliary guide rail; the side wheels in the two side wheel sets are in rolling contact with the two ridge-direction power guide rails respectively; the four Hall sensors are sequentially arranged and fixed on one of the movable guide rails; wherein the two Hall sensors are positioned at one side of the support frame; the other two Hall sensors are positioned on the other side of the support frame;
the pallet paving trolley comprises a frame, a wheel shaft, a transverse moving driving piece, a position adjusting mechanism, a pallet clamping mechanism, a lifting mechanism and wheels; two wheel shafts are respectively supported at two sides of the frame; wheels are fixed at both ends of the two wheel shafts; wheels at two ends of the wheel shaft are in rolling contact with the two movable guide rails respectively; one of the axles is driven by a traverse driving member;
the lifting mechanism comprises a lifting driving piece, a lifting frame, a lifting block and a screw rod; the lifting frame is fixed on the frame; the screw rod is supported on the lifting frame; the screw rod is driven by a lifting driving piece; the lifting block and the lifting frame form a sliding pair; a first nut fixed on the lifting block and a screw rod form a screw pair;
the position adjusting mechanism comprises an adjusting block, a hand wheel, a screw and a handle; the bottom end of the screw rod penetrates through the lifting block and forms a rotating pair with the lifting block; the handle and the bottom end of the screw form a screw pair; the second nut fixed on the adjusting block and the screw form a screw pair; the hand wheel is fixed with the top end of the screw rod;
the tray clamping mechanism comprises a tray placing driving assembly, a tray laying frame and a clamping jaw assembly; the tray laying frame consists of an inner plate and two side plates; the inner ends of the two side plates and the two ends of the inner plate are respectively fixed; the inner plate is fixed with the adjusting block; the pallet frame and the frame form a sliding pair; the number of the jaw assemblies is two; the two jaw assemblies are respectively arranged at the bottoms of the two side plates;
the clamping jaw assembly comprises a holding sub-piece, a holding rotating shaft and a tray clamping jaw; the clasping rotating shaft is supported at the bottom of the corresponding side plate; the holding sub-piece comprises a holding claw and a cam; the clasping claws and the corresponding side plates form a sliding pair; a cam cavity is formed in the clasping claw; the cams are all fixed with the clasping rotating shaft; the cam is arranged in the cam cavity; the working contour of the cam and the inner side surface of the cam cavity form a cam pair; the bottom of the holding claw is fixed with a linkage block; n holding sub-pieces are arranged in one clamping jaw assembly, and n is more than or equal to 1 and less than or equal to 5; the n holding sub-pieces are sequentially arranged; the tray jaws and the bottoms of the corresponding side plates form a revolute pair; the inner edge of the tray claw is provided with a linkage strip; the linkage strip is contacted with a linkage block in the holding sub-piece; the tray jack catch is located and embraces the under of the sub-piece tightly.
2. A field pallet machine as claimed in claim 1 wherein: and the outer edge of the tray clamping jaw is provided with a clamping strip which is integrally formed with the tray clamping jaw.
3. A field pallet machine as claimed in claim 2 wherein: under the state that the holding claws in the holding sub-piece retract, the linkage blocks abut against the linkage strips, so that the inner side surfaces of the clamping claws of the tray are kept horizontal, and the clamping strips face to the right upper side; under the state that the holding claw in the holding sub-piece retracts, the linkage block loosens the linkage strip, and the tray claw is in an inclined state.
4. A field pallet machine as claimed in claim 1 wherein: the distance between the two side plates is equal to the width of the seedling raising tray to be paved.
5. A field pallet machine as claimed in claim 1 wherein: the transverse driving piece comprises a third motor, a driving gear and a driven gear; the driven gear is fixed with one wheel shaft; the third motor is fixed with the frame; an output shaft of the third motor is fixed with the driving gear; the driving gear is meshed with the driven gear;
the lifting driving piece comprises a fourth motor, a synchronous belt wheel and a synchronous belt; the fourth motor is fixed on the frame; the two synchronous belt wheels are respectively fixed with the screw rod and an output shaft of the fourth motor; the two synchronous pulleys are connected through a synchronous belt.
6. A field pallet machine as claimed in claim 1 wherein: the tray placing driving assembly comprises a fifth motor, a driving chain wheel, a driven chain wheel and a chain; the two driven chain wheels are respectively fixed with the two clamping jaw assemblies in the tightly holding rotating shaft; the fifth motor is fixed on the pallet frame; an output shaft of the fifth motor is fixed with the driving chain wheel; the driving chain wheel is connected with the two driven chain wheels through a chain.
7. A field pallet machine as claimed in claim 1 wherein: the pallet paving trolley also comprises a three-hole button box; the three-hole button box is provided with a start button, an emergency stop button and a direction knob; the three-hole button box is provided with two holes; two three-hole button boxes are respectively arranged on two sides of the frame.
8. A field pallet machine as claimed in claim 1 wherein: the side of the holding claw far away from the corresponding side plate is provided with a clamping plate integrally formed with the holding claw.
CN201910007933.6A 2019-01-04 2019-01-04 Machine for spreading plates in field Active CN109673324B (en)

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Application Number Priority Date Filing Date Title
CN201910007933.6A CN109673324B (en) 2019-01-04 2019-01-04 Machine for spreading plates in field

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Application Number Priority Date Filing Date Title
CN201910007933.6A CN109673324B (en) 2019-01-04 2019-01-04 Machine for spreading plates in field

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CN109673324A CN109673324A (en) 2019-04-26
CN109673324B true CN109673324B (en) 2020-11-03

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CN111226646B (en) * 2020-03-04 2021-09-21 浙江理工大学 Tray placing device for field tray laying operation
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