Electric tea picking vehicle suitable for hilly tea garden

Abstract

The present application relates to a kind of electric tea harvesting vehicle suitable for hilly tea garden.Its characterized in that agricultural machinery load is installed on the body frame of the harvesting vehicle, and the agricultural machinery load includes crown cutter mechanism, tree cutter mechanism, harvesting bag, leaf fertilizer plastic bucket, fertilization spraying mechanism, electric control cabinet, air compressor, control cabinet and air compressor installation tray and oil-fired generator, and the crown cutter mechanism and fertilization spraying mechanism are used alternatively.The support of tea harvesting bag tray and the control cabinet and air compressor installation tray are a fixed size tray, which does not need to adjust the size automatically adjusted by the body width adjustment mechanism according to different slopes.The control cabinet and air compressor installation tray are used for the installation of control cabinet and air compressor, and it is also very convenient to install oil-fired generator in the tray.The electric tea harvesting vehicle is a series plug-in hybrid electric tea harvesting vehicle powered by an internal combustion engine as a range extender, which is more suitable for long-term operation in hilly areas.

Description

Technical Field

[0001] This invention relates to an electric tea harvesting vehicle suitable for hilly tea gardens. Background Technology

[0002] Many tea gardens in my country are located in hilly and mountainous areas. Due to steep slopes and rugged, uneven roads, there is a need for tea harvesting machinery that can adjust the center of gravity. An electric tea harvesting vehicle suitable for hilly tea gardens can enable large-scale mechanized tea harvesting and alleviate the problem of declining agricultural labor.

[0003] Major agricultural mechanization patents related to tea production in my country include: "A tea-picking machine with high efficiency" (application publication number CN104525470A); "A tea tree reaping machine" (application publication number CN108575386A); "A riding-type tea tree reaping machine and its usage method" (application publication number CN112889512A); "A tea tree reaping machine" (application publication number CN219555718U); "A highly automated tea harvester" (application publication number CN216362633U); "A tea tree cross-section arc-shaped contour cutting harvesting mechanism and cutting harvesting method" (application publication number CN115211283A); "A tea harvesting machine" (application publication number CN115088476A); and "An automated tea harvester" (application publication number CN113243202). However, the mechanical structure is very different from the electric tea harvesting vehicle for hilly tea gardens involved in this invention. It is necessary to design agricultural machinery equipment suitable for hilly tea gardens, including the load structure and transition connection structure of the agricultural machinery and the electric tea harvesting vehicle. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a technical solution for an electric tea harvesting vehicle suitable for hilly tea gardens.

[0005] An electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that: the agricultural machinery load is installed on the vehicle frame, which includes square steel steering brackets, steering wheel bracket steering mechanisms, upper bracket lifting cylinders, transverse brackets, longitudinal brackets, and upper balance brackets. Four square steel steering brackets are provided, each with a steering wheel bracket steering mechanism. Adjacent steering wheel bracket steering mechanisms connect to the transverse and longitudinal brackets to form a basic frame. Upper bracket lifting cylinders are installed on the steering wheel bracket steering mechanisms, and adjacent upper bracket lifting cylinders connect to the upper balance bracket via four-way connectors to form an upper frame. Vertical adjustment mechanisms are provided on both the square steel steering brackets and the transverse and longitudinal brackets to adjust the angles between the square steel steering brackets and the transverse and longitudinal brackets. A vehicle width adjustment mechanism is provided on the transverse brackets to adjust the transverse dimensions of the vehicle frame; a vehicle length adjustment mechanism is provided on the longitudinal brackets to adjust the longitudinal dimensions of the vehicle frame.

[0006] The transverse support includes: a single-ear ball joint, a transverse support square steel, and a vehicle width adjustment mechanism. The transverse support square steel is connected to the support plate located on the side of the lower flange of the steering mechanism of the steering wheel support through the single-ear ball joints on both sides. The longitudinal support includes: a single-ear ball joint, a longitudinal support square steel, and a vehicle length adjustment mechanism. The longitudinal support square steel is connected to the support plate located on the side of the lower flange of the steering mechanism of the steering wheel support through the single-ear ball joints on both sides.

[0007] The upper-level balance support is a telescopic universal joint structure, including: a ball joint, an outer balance support rod, an inner balance support rod, and a transverse balance support inner bushing. The outer and inner balance support rods are each screwed to a ball joint at one end. The ball joint is mounted on the four-way connector of the upper-level support lifting cylinder. The transverse balance support inner bushing is positioned between the outer and inner balance support rods and is supported by them, ensuring that the outer and inner balance support rods can freely extend and retract. Multiple support rods, each composed of a ball joint, an outer balance support rod, an inner balance support rod, and a transverse balance support inner bushing, are transversely arranged within the upper-level balance support.

[0008] The vehicle width adjustment mechanism is mounted on a transverse support square steel, dividing the transverse support square steel into two retractable structures. The vehicle width adjustment mechanism includes: a cross-shaft universal coupling, a forward threaded screw, a reverse threaded screw, a vehicle width adjustment stepper motor, a nut seat, and a slide. The cross-shaft universal coupling connects the forward threaded screw and the reverse threaded screw to its two sides respectively. The forward threaded screw and the reverse threaded screw are connected to the transverse support square steel on both sides via the nut seat. A slide is mounted on one side of the transverse support square steel, and the vehicle width adjustment stepper motor is mounted on the slide. The vehicle width adjustment stepper motor drives the screw to rotate. Since the screw is divided into a forward threaded screw and a reverse threaded screw, when the vehicle width adjustment stepper motor drives the screw to rotate, the nut seats will move closer or further apart to achieve the purpose of vehicle width adjustment.

[0009] The vehicle length adjustment mechanism is mounted on the longitudinal support square steel, dividing the longitudinal support square steel into two telescopic structures. The vehicle length adjustment mechanism includes: a cross-shaft universal coupling, a forward threaded screw, a reverse threaded screw, a vehicle length adjustment stepper motor, a nut seat, and a slide. The cross-shaft universal coupling connects the forward threaded screw and the reverse threaded screw. The forward threaded screw and the reverse threaded screw are respectively connected to the longitudinal support square steel on both sides through the nut seat. A slide is set on one of the outer longitudinal support square steel sides, and a vehicle length adjustment stepper motor is set on the slide. The vehicle length adjustment stepper motor drives the screw to rotate. Since the screw is divided into a forward threaded screw and a reverse threaded screw, when the vehicle length adjustment stepper motor drives the screw to rotate, the nut seats will move closer or further apart to achieve the purpose of vehicle length adjustment.

[0010] Bearings for the operating mechanism bracket are installed on the outer edges of both ends of the cross-shaft universal coupling. One end of the operating mechanism positioning bracket is embedded in the bearings of the operating mechanism bracket. The other end of the operating mechanism positioning bracket is connected to an L-shaped operating mechanism connecting bracket via bolts. Multiple positioning bracket fixing holes are provided on the operating mechanism positioning bracket, and multiple L-shaped operating mechanism bracket fixing holes are provided on the L-shaped operating mechanism connecting bracket. The operating mechanism positioning bracket and the L-shaped operating mechanism connecting bracket are connected by operating mechanism bracket fixing bolts and operating mechanism fixing bracket positioning nuts. Different hole positions allow for changes in the height of the L-shaped operating mechanism connecting bracket. A canopy cutting mechanism or a fertilizer spraying mechanism is connected to the bottom of the L-shaped operating mechanism connecting bracket. The canopy cutting mechanism or fertilizer spraying mechanism is fixed to the bottom of the L-shaped operating mechanism connecting bracket by welding. Changes in the height of the L-shaped operating mechanism connecting bracket consequently change the height of the connected canopy cutting mechanism or fertilizer spraying mechanism.

[0011] The canopy cutting mechanism or fertilizer spraying mechanism connected to the L-shaped operating mechanism connecting bracket is set in front of the square steel steering bracket at the front of the electric tea harvesting vehicle. That is, the canopy cutting mechanism or fertilizer spraying mechanism rests on the square steel steering bracket, thereby relatively fixing the longitudinal position of the canopy cutting mechanism or fertilizer spraying mechanism. The tree cutting mechanism is fixed on the steering wheel bracket wall inside the square steel steering bracket.

[0012] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the agricultural machinery load includes a canopy cutting mechanism, a tree cutting mechanism, a harvesting bag, a foliar fertilizer plastic bucket, a fertilizer spraying mechanism, an electrical control cabinet, an air compressor, a control cabinet and air compressor mounting tray, and a fuel generator. The canopy cutting mechanism and the fertilizer spraying mechanism are used interchangeably.

[0013] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the canopy cutter mechanism includes a canopy cutter shell, a cutter drive mechanism cover, an L-shaped operating mechanism connecting bracket, and a transition plate between the canopy cutter bracket and the cutter shell, all of which are connected in a mating manner. The transition plate between the canopy cutter bracket and the cutter shell is welded to the canopy cutter shell, and the L-shaped operating mechanism connecting bracket is welded to the transition plate. The L-shaped operating mechanism bracket fixing hole on the L-shaped operating mechanism connecting bracket is used to adjust the height of the canopy cutter mechanism through the operating mechanism bracket fixing bolt and the operating mechanism fixing bracket positioning nut.

[0014] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the canopy cutter shell contains a lower cutter, an upper cutter, a motor, a cylindrical cam mechanism, a grooved cam, a compressed air nozzle, a compressed air pipe, a cutter drive mechanism cover, and a soft sealing ring. The soft sealing ring is used to seal the compressed air pipe as it passes through the canopy cutter shell, and the cutter drive mechanism cover houses the cutter drive mechanism.

[0015] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the cutter drive mechanism includes a cutter mounting plate, a cutter mounting plate fixing bolt, a cutter drive mechanism base, a cutter drive mechanism base fixing bolt, a cylindrical cam bracket, a bearing, a sliding rod, a sliding rod fixing screw, a bushing, an upper cutter drive rod, a lower cutter drive rod, a cylindrical cam groove, and a coupling. The cutter drive mechanism base is fixed to the canopy cutter shell by the cutter drive mechanism base fixing bolt. The cutter drive mechanism base has two cylindrical cam brackets. The shaft of mechanism one passes through the bearing on the cylindrical cam bracket, allowing it to rotate flexibly. The grooved cam one on the upper cutter drive rod is inserted into the cylindrical cam groove of the upper part of the cylindrical cam mechanism one, and is positioned by two sliding rods passing through the bushing on the upper cutter drive rod. The sliding rods are finally fixed to the cylindrical cam bracket with sliding rod fixing screws. The grooved cam one on the lower cutter drive rod is inserted into the cylindrical cam groove of the lower part of the cylindrical cam mechanism one, and is positioned by two sliding rods passing through the bushing on the lower cutter drive rod. The sliding rods are finally fixed to the cylindrical cam bracket with sliding rod fixing screws.

[0016] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the shaft of the motor is connected to the shaft of the cylindrical cam mechanism via a coupling; the upper cutter drive rod is welded to the upper cutter, and the lower cutter drive rod is welded to the lower cutter; one side of the Z-shaped cutter bonding plate presses against the upper and lower cutters, and the other side of the Z-shaped cutter bonding plate is fixed to the canopy cutter housing by a cutter bonding plate fixing bolt; when the motor rotates, it drives the cylindrical cam mechanism to rotate via the coupling, and the grooved cams on the upper and lower cutter drive rods reciprocate horizontally along the grooves of the cylindrical cams, thereby driving the upper and lower cutters to reciprocate in opposite directions to cut the tea leaves; at the same time, compressed air nozzles blow compressed air, causing the cut tea leaves to be blown into the tea harvesting bag through the tea harvesting hose.

[0017] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the tree cutting mechanism includes a tree cutting electric drive mechanism, a tree cutting blade and wheel steering bracket connecting bolts, a compressed air pipe, an air nozzle, an upper cutting blade, a lower cutting blade, a motor, a cylindrical cam mechanism, a grooved cam, a cutting drive mechanism cover, a tree cutting mechanism fixing plate, a tree cutting blade outer shell, and a wheel steering bracket connecting nut. The tree cutting blade outer shell is connected to the tree cutting mechanism fixing plate, and the tree cutting mechanism fixing plate is threadedly connected to the wheel steering bracket connecting nut welded to the steering wheel bracket wall through the tree cutting blade and wheel steering bracket connecting bolts, so that the tree cutting mechanism is fixed on the steering wheel bracket.

[0018] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the outer shell of the tree cutter is equipped with a second cutter drive mechanism cover, a tree cutter electric drive mechanism, a connecting bolt between the tree cutter and the wheel steering bracket, a second crown cutter cylindrical cam mechanism, a second compressed air pipe, an air nozzle, an upper cutter blade, and a lower cutter blade. The air nozzle installed on the second compressed air pipe is angled upwards at 30 degrees. During harvesting, the second motor rotates, ultimately driving the upper and lower cutter blades to reciprocate within the crown cutter cylindrical cam mechanism. Simultaneously, the air nozzle blows compressed air, causing the cut tea leaves to be blown upwards and transported to the tea harvesting bag through the tea harvesting hose. The second cutter drive mechanism cover is equipped with a cutter drive mechanism with the same internal structure as the first cutter drive mechanism cover.

[0019] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the control cabinet, air compressor mounting tray, and tea harvesting bag tray all include a tray support, a slider welded to an upper lateral balance support, a metal discharge port support rod, tray fixing screws, a slider, and a slider welded to an upper lateral balance support. The tray support is equipped with two sliders, which are welded and fixed to the inner rod and outer rod of the balance support at the slider welded to the upper lateral balance support. The control cabinet, air compressor mounting tray, and tea harvesting bag tray are fixedly connected to the tray support bolts using tray fixing screws. Compressed air hoses are connected from the air compressor to the compressed air nozzles of the canopy cutter mechanism and the blowing nozzles of the tree cutter mechanism. The tea harvesting hoses from the canopy cutter mechanism and the two tree cutter mechanisms are connected to the tea harvesting bags through hose four-way connectors.

[0020] The electric tea harvesting vehicle suitable for hilly tea gardens is characterized in that the tea harvesting bag tray holds harvesting bags or plastic buckets of leaf fertilizer, and the air compressor, electrical control cabinet and fuel generator are installed on the air compressor mounting tray.

[0021] This invention relates to a tea harvesting bag tray and a control cabinet / air compressor mounting tray, which are fixedly connected by tray fixing screws and tray support bolts. The tray support is equipped with two sliders, which are welded to the inner and outer rods of the upper balance transverse support at the welding surfaces of the sliders and the upper balance support. This ensures that the tea harvesting bag tray support, control cabinet, and air compressor mounting tray are a fixed-size tray, eliminating the need for size adjustments due to different slopes or vehicle width adjustment mechanisms. The control cabinet and air compressor mounting tray is used for installing the control cabinet and air compressor, and also facilitates the installation of a fuel generator within the tray. The electric tea harvesting vehicle is a series-connected plug-in hybrid electric tea harvesting vehicle powered by an internal combustion engine for the range extender, making it more suitable for long-term operation in hilly areas.

[0022] When tea leaves need to be harvested, spare folding harvest bags can be placed in the tea harvest bag tray, and a harvest bag that fits into the metal discharge port fixed to the metal discharge port support rod is placed on top of the folding harvest bag.

[0023] The canopy cutting mechanism is bolted to the L-shaped operating mechanism connecting bracket and the operating mechanism positioning bracket, so that the canopy cutting mechanism is in front of the square steel steering bracket at the front of the electric tea harvesting vehicle. When the electric tea harvesting vehicle moves forward to harvest tea, the canopy cutting mechanism rests on the square steel steering bracket, thus relatively fixing the longitudinal position of the canopy cutting mechanism.

[0024] In this invention, the compressed air pipes from the air compressor to the compressed air nozzles of the canopy cutter mechanism and the blowing nozzles of the tree body cutter mechanism are connected by hoses. The connecting pipes to the tea harvesting bag and the canopy cutter mechanism and the two tree body cutter mechanisms are also connected by hoses through the hose four-way connector. Through the hose connection, the pipes of the electric tea harvesting vehicle can flexibly follow the lifting and lowering movement of the upper support lifting cylinder.

[0025] This invention allows for the replacement of harvest bags with foliar fertilizer plastic buckets. Harvesting bags are used during tea picking, and when foliar fertilizer needs to be applied to the tea leaves, the foliar fertilizer plastic bucket can be placed in the tray of the tea harvest bag. The output pressure of the air compressor is adjusted to 0.025MPa, and the compressed air hose from the air compressor pressurizes the foliar fertilizer plastic bucket from the top. The liquid fertilizer hose connects to the fertilizer spraying mechanism from the bottom of the foliar fertilizer plastic bucket. Attached Figure Description

[0026] Figure 1 This is a diagram illustrating the tool holder height adjustment.

[0027] Figure 2 Diagram showing the connection of the bracket for the operating mechanism;

[0028] Figure 3 Schematic diagram of the L-shaped operating mechanism connecting bracket;

[0029] Figure 4 This is a schematic diagram of the tree cutting mechanism;

[0030] Figure 5 Side view of the tree cutter mechanism;

[0031] Figure 6 Top sectional view of the tree cutter mechanism;

[0032] Figure 7 Top view of the canopy cutter mechanism;

[0033] Figure 8 Cross-sectional view of the canopy cutter mechanism;

[0034] Figure 9 Isometric drawing of the cylindrical cam mechanism for the cutter;

[0035] Figure 10 Axonometric view of the cutter drive mechanism (taking a tree canopy cutter as an example);

[0036] Figure 11 This is a schematic diagram of the canopy cutter mechanism;

[0037] Figure 12 This is a side view of the cutter's position;

[0038] Figure 13 This is a schematic diagram showing the connection between the pallet and the upper balance support.

[0039] Figure 14 A schematic diagram of the tray fixing mechanism when the vehicle body is extended in width;

[0040] Figure 15 A schematic diagram of the tray fixing mechanism when the width of the vehicle body is reduced;

[0041] Figure 16 This is a schematic diagram of the axle side of an electric tea harvesting vehicle.

[0042] Figure 17 A schematic diagram of the axle side of an electric tea harvesting vehicle converted into a foliar fertilizer spraying vehicle.

[0043] Figure 18 This is a schematic diagram of foliar fertilizer spraying. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings:

[0045] An electric tea harvesting vehicle suitable for hilly tea gardens has its agricultural machinery load mounted on a vehicle frame 100. The vehicle frame 100 includes square steel steering brackets 110, steering wheel bracket steering mechanisms 120, upper support lifting cylinders 130, transverse supports 170, longitudinal supports 180, and upper balance supports 190. Four square steel steering brackets 110 are provided, and the steering wheel bracket steering mechanisms 120 are mounted on each square steel steering bracket 110. Adjacent steering wheel bracket steering mechanisms 120 connect to the transverse supports 170 and the longitudinal supports 180 to form the basic frame. Upper support lifting cylinders 130 are mounted on the steering wheel bracket steering mechanisms 120, and adjacent upper support cylinders lift... The electric cylinder 130 is connected to the upper balance bracket 190 via a four-way connector to form the upper frame. Vertical adjustment mechanisms 140 are installed on the square steel steering bracket 110 and the transverse bracket 170, and on the square steel steering bracket 110 and the longitudinal bracket 180. Each vertical adjustment mechanism 140 is used to adjust the angle between the square steel steering bracket 110 and the transverse bracket 170, and the angle between the square steel steering bracket 110 and the longitudinal bracket 180. A vehicle width adjustment mechanism 160 is installed on the transverse bracket 170 to adjust the transverse dimension of the vehicle frame. A vehicle length adjustment mechanism 150 is installed on the longitudinal bracket 180 to adjust the longitudinal dimension of the vehicle frame.

[0046] The transverse support 170 includes: a single-ear ball joint 171, a transverse support square steel 172, and a vehicle body width adjustment mechanism 160. The transverse support square steel 172 is connected to a support plate disposed on the lower flange side of the steering mechanism 120 of the steering wheel support via the single-ear ball joints 171 on both sides. Similarly, the longitudinal support 180 includes: a single-ear ball joint, a longitudinal support square steel, and a vehicle body length adjustment mechanism 150. The longitudinal support square steel is connected to a support plate disposed on the lower flange side of the steering mechanism 120 of the steering wheel support via the single-ear ball joints on both sides.

[0047] The upper balance support 190 is a telescopic universal joint structure, including: a ball joint 191, an outer balance support rod 192, an inner balance support rod 193, and a transverse balance support inner bushing 194. The ball joint is screwed to one end of the outer balance support rod 192 and the inner balance support rod 193. The ball joint is set on the four-way connector 132 of the upper support lifting cylinder 130. The transverse balance support inner bushing 194 is set between the outer balance support rod 192 and the inner balance support rod 193 and is supported by the transverse balance support inner bushing 194 to ensure that the outer balance support rod 192 and the inner balance support rod 193 can extend and retract freely. Multiple support rods composed of the ball joint 191, the outer balance support rod 192, the inner balance support rod 193, and the transverse balance support inner bushing 194 are arranged transversely inside the upper balance support 190.

[0048] The vehicle width adjustment mechanism 160 is mounted on the transverse support square steel 172, dividing the transverse support square steel 172 into two telescopic structures. The vehicle width adjustment mechanism 160 includes: a cross-shaft universal coupling 161, a forward threaded screw 162, a reverse threaded screw 163, a vehicle width adjustment stepper motor 166, a nut seat 167, and a slide table 168. The forward threaded screw 162 and the reverse threaded screw 163 are respectively connected to both sides of the cross-shaft universal coupling 161. The threaded lead screw 163 is connected to the transverse support square steel 172 on both sides through the nut seat 167. A slide table 168 is set on one of the transverse support square steel 172, and a vehicle width adjustment stepper motor 166 is set on the slide table 168. The vehicle width adjustment stepper motor 166 drives the lead screw to rotate. Since the lead screw is divided into a forward threaded lead screw 162 and a reverse threaded lead screw 163, when the vehicle width adjustment stepper motor 166 drives the lead screw to rotate, the nut seats 167 will move closer or further apart to achieve the purpose of vehicle width adjustment.

[0049] The vehicle length adjustment mechanism 150 is mounted on the longitudinal support square steel, dividing the longitudinal support square steel into two telescopic structures. The components and adjustment principle of the vehicle length adjustment mechanism are the same as those of the vehicle width adjustment mechanism 160. The vehicle length adjustment mechanism includes: a cross-shaft universal coupling, a forward threaded screw, a reverse threaded screw, a vehicle length adjustment stepper motor, a nut seat, and a slide. The cross-shaft universal coupling connects the forward threaded screw and the reverse threaded screw. The forward threaded screw and the reverse threaded screw are respectively connected to the longitudinal support square steel on both sides through the nut seat. A slide is set on one of the outer longitudinal support square steels, and a vehicle length adjustment stepper motor is set on the slide. The vehicle length adjustment stepper motor drives the screw to rotate. Since the screw is divided into a forward threaded screw and a reverse threaded screw, when the vehicle length adjustment stepper motor drives the screw to rotate, the nut seats will move closer or further apart to achieve the purpose of vehicle length adjustment.

[0050] Bearings 164 for operating mechanism supports are installed on the outer edges of both ends of the universal joint 161. One end of an operating mechanism positioning bracket 165 is embedded in the bearing 164. The other end of the operating mechanism positioning bracket 165 is bolted to an L-shaped operating mechanism connecting bracket 205. The operating mechanism positioning bracket 165 has multiple positioning bracket fixing holes, and the L-shaped operating mechanism connecting bracket 205 has multiple L-shaped operating mechanism bracket fixing holes 208. The operating mechanism positioning bracket 165 and the L-shaped operating mechanism connecting bracket 205 are connected via the operating mechanism... The bracket fixing bolt 206 and the operating mechanism fixing bracket positioning nut 207 are connected in different hole positions to achieve the height change of the L-shaped operating mechanism connecting bracket 205; the bottom of the L-shaped operating mechanism connecting bracket 205 is connected to the canopy cutting mechanism 200 or the fertilizer spraying mechanism 322, and the canopy cutting mechanism 200 or the fertilizer spraying mechanism 322 is fixed to the bottom of the L-shaped operating mechanism connecting bracket 205 by welding. The height change of the L-shaped operating mechanism connecting bracket 205 will in turn cause the height change of the connected canopy cutting mechanism 200 or the fertilizer spraying mechanism 322.

[0051] The canopy cutting mechanism 200 or fertilizer spraying mechanism 322 connected to the L-shaped operating mechanism connecting bracket 205 is located in front of the square steel steering bracket 110 at the front of the electric tea harvesting vehicle. When the electric tea harvesting vehicle moves forward to harvest tea, the canopy cutting mechanism 200 rests against the square steel steering bracket, thereby relatively fixing the longitudinal position of the canopy cutting mechanism. The tree cutting mechanism 220 is fixed on the steering wheel bracket wall inside the square steel steering bracket 110.

[0052] The agricultural machinery load includes a canopy cutting mechanism 200, a tree cutting mechanism 220, a harvest bag 300, a foliar fertilizer plastic bucket 320, a fertilizer spraying mechanism 322, an electrical control cabinet 400, an air compressor 500, a control cabinet and air compressor mounting tray 600, and a fuel generator 800. The canopy cutting mechanism 200 and the fertilizer spraying mechanism 322 are interchangeable.

[0053] The canopy cutter mechanism 200 includes a canopy cutter housing 201, a cutter drive mechanism cover 202, an L-shaped operating mechanism connecting bracket 205, and a transition plate 209 between the canopy cutter bracket and the cutter housing. The transition plate 209 is welded to the canopy cutter housing 201. The L-shaped operating mechanism connecting bracket 205 is welded to the transition plate 209. The L-shaped operating mechanism bracket fixing hole 208 on the L-shaped operating mechanism connecting bracket 205 is used to adjust the height of the canopy cutter mechanism 200 through the operating mechanism bracket fixing bolt 206 and the operating mechanism fixing bracket positioning nut 207.

[0054] The canopy cutter housing 201 contains a lower cutter 210, an upper cutter 211, a motor 212, a cylindrical cam mechanism 213, a grooved cam 214, a compressed air nozzle 203, a compressed air pipe 204, a cutter drive mechanism cover 202, and a soft sealing ring 215. The soft sealing ring 215 is used to seal the compressed air pipe 204 as it passes through the canopy cutter housing 201. The cutter drive mechanism is installed inside the cutter drive mechanism cover 202.

[0055] The cutter drive mechanism includes a cutter mounting plate 700, a cutter mounting plate fixing bolt 701, a cutter drive mechanism base 702, a cutter drive mechanism base fixing bolt 703, a cylindrical cam bracket 704, a bearing 705, a sliding rod 706, a sliding rod fixing screw 707, a bushing 708, an upper cutter drive rod 709, a lower cutter drive rod 710, a cylindrical cam groove 711, and a coupling 712. The cutter drive mechanism base 702 is fixed to the canopy cutter housing 201 by the cutter drive mechanism base fixing bolt 703. There are two cylindrical cam brackets 704 on the cutter drive mechanism base 702, and the shaft of the cylindrical cam mechanism 213 passes through the cylindrical cam bracket 704. The bearing 705 allows for flexible rotation. The grooved cam 214 on the upper cutter drive rod 709 is inserted into the cylindrical cam groove 711 on the upper part of the cylindrical cam mechanism 213, and is positioned by two sliding rods 706 passing through the bushing 708 on the upper cutter drive rod 709. The sliding rods 706 are finally fixed to the cylindrical cam bracket 704 with sliding rod fixing screws 707. The grooved cam 214 on the lower cutter drive rod 710 is inserted into the cylindrical cam groove 711 on the lower part of the cylindrical cam mechanism 213, and is positioned by two sliding rods 706 passing through the bushing 708 on the lower cutter drive rod 710. The sliding rods 706 are finally fixed to the cylindrical cam bracket 704 with sliding rod fixing screws 707.

[0056] The shaft of motor 212 is connected to the shaft of cylindrical cam mechanism 213 via coupling 712. The upper cutter drive rod 709 is welded to the upper cutter 211, and the lower cutter drive rod 710 is welded to the lower cutter 210. One side of the Z-shaped cutter bonding plate 700 presses against the upper cutter 211 and the lower cutter 210, while the other side of the Z-shaped cutter bonding plate 700 is bolted to the canopy cutter housing 201 via cutter bonding plate fixing bolts 701. When motor 212 rotates, it drives the cylindrical cam mechanism 213 via coupling 712. When the column cam mechanism 213 rotates, the grooved cam 214 on the upper cutter drive rod 709 and the grooved cam 214 on the lower cutter drive rod 710 reciprocate horizontally along the cylindrical cam groove 711. The upper cutter drive rod 709 and the lower cutter drive rod 710 drive the upper cutter 211 and the lower cutter 210 to reciprocate in opposite directions to cut the tea leaves. At the same time, the compressed air nozzle 203 blows compressed air, so that the cut tea leaves are blown into the tea harvesting bag 300 through the tea harvesting hose 502.

[0057] The tree cutter mechanism 220 includes a tree cutter electric drive mechanism 221, a tree cutter and wheel steering bracket connecting bolt 222, a compressed air pipe 223, an air nozzle 224, an upper cutter blade 225, a lower cutter blade 226, a motor 227, a cylindrical cam mechanism 228, a grooved cam 229, a cutter drive mechanism cover 230, a tree cutter mechanism fixing plate 231, a tree cutter housing 232, and a wheel steering bracket connecting nut 233. The tree cutter housing 232 is connected to the tree cutter mechanism fixing plate 231. The tree cutter mechanism fixing plate 231 is threadedly connected to the wheel steering bracket connecting nut 233 welded to the steering wheel bracket wall 114 by the tree cutter and wheel steering bracket connecting bolt 222, so that the tree cutter mechanism 220 is fixed on the steering wheel bracket 110.

[0058] The tree cutter housing 232 contains a cutter drive mechanism cover 230, a tree cutter electric drive mechanism 221, a tree cutter and wheel steering bracket connecting bolt 222, a canopy cutter cylindrical cam mechanism 228, a compressed air pipe 223, an air nozzle 224, an upper cutter blade 225, and a lower cutter blade 226. The air nozzle 224 installed on the compressed air pipe 223 is angled upwards at 30 degrees. During harvesting, the motor 227 rotates and ultimately drives the upper cutter blade. 225 and the lower cutting blade 226 reciprocate within the second cylindrical cam mechanism 228 of the canopy cutter. Simultaneously, the air nozzle 224 blows compressed air, causing the cut tea leaves to be blown upwards and transported to the tea harvesting bag 300 through the tea harvesting hose 502. The second cutter drive mechanism housing 230 is equipped with a cutter drive mechanism with the same internal structure as the first cutter drive mechanism housing 202. The action process and working principle are the same. The tree body cutter mechanism 220 and the canopy cutter mechanism 200 have the same working principle, which will not be described again here.

[0059] The control cabinet and air compressor mounting tray 600 and tea harvest bag tray 601 both include a tray support 603, a slider 607, a metal discharge port support rod 605, a tray fixing screw 606, a slider 607, and a welding surface 604 between the slider and the upper balance horizontal support. The tray support 603 is equipped with two sliders 607, which are welded and fixed to the inner rod 193 and the outer rod 192 of the balance support at the welding surface 604 between the slider and the upper balance horizontal support. The outer rod 192 and the inner rod 193 of the balance support are supported by the inner bushing 194 of the horizontal support, ensuring that the outer rod 192 and the inner rod 193 of the balance support can extend and retract flexibly.

[0060] The control cabinet, air compressor mounting tray 600, and tea harvesting bag tray 601 are bolted to the tray support 603 using tray fixing screws 606. Compressed air hoses 501 connect from the air compressor 500 to the compressed air nozzles 203 of the canopy cutter mechanism 200 and the air nozzles 224 of the tree body cutter mechanism 220. Tea harvesting hoses 502 from the canopy cutter mechanism 200 and the two tree body cutter mechanisms 210 are connected to the tea harvesting bags 300 via hose four-way connectors 503. Harvesting bags 300 or foliar fertilizer plastic buckets 320 are placed on the tea harvesting bag tray 601. The air compressor 500, electrical control cabinet 400, and fuel generator 800 are mounted on the air compressor mounting tray 600. Example

[0061] An electric tea harvesting vehicle suitable for hilly tea gardens mainly includes: a vehicle frame 100, a canopy cutting mechanism 200, a tree cutting mechanism 210, an agricultural machinery load and its connecting mechanism, a harvesting bag 300, an electrical control cabinet 400, an air compressor 500, a control cabinet and air compressor mounting tray 600, a tea harvesting bag tray 601, and a fuel generator 800.

[0062] Please see Figure 1 Figure 2 Figure 3 , Figure 13 , Figure 17 The vehicle body frame 100 includes: a square steel steering bracket 110, a steering wheel bracket steering mechanism 120, an upper bracket lifting cylinder 130, a bracket vertical adjustment mechanism 140, a vehicle length adjustment mechanism 150, a vehicle width adjustment mechanism 160, a transverse bracket 170, a longitudinal bracket 180, and an upper balance bracket 190; wherein, the transverse bracket 170 includes: a single-ear ball joint 171, a transverse bracket square steel 172, and a vehicle width adjustment mechanism 160, and the transverse bracket square steel 172 is connected to the steering wheel bracket steering mechanism via the single-ear ball joints 171 on both sides. The lower flange side of 120 is connected to a support plate; the vehicle width adjustment mechanism 160 is set on the transverse support square steel 172, and includes: a cross-shaft universal coupling 161, a forward threaded screw 162, a reverse threaded screw 163, a vehicle width adjustment stepper motor 166, a nut seat 167, and a slide table 168; the upper balance support 190 is a telescopic universal joint including: a ball joint 191, a balance support outer rod 192, a balance support inner rod 193, and a transverse balance support inner bushing 194. The vehicle width adjustment mechanism 160 can automatically adjust the width of the vehicle body, and manually change the height of the cutter or foliar fertilizer spraying mechanism at the operating mechanism positioning bracket 165, adapting to strip-planted tea gardens in various regions.

[0063] The agricultural machinery load and its connecting mechanism include: a canopy cutting mechanism 200, a tree cutting mechanism 220, a harvest bag 300, a foliar fertilizer plastic bucket 320, a fertilizer spraying mechanism 322, an electrical control cabinet 400, an air compressor 500, a control cabinet and air compressor mounting tray 600, and a fuel generator 800. The canopy cutting mechanism 200 and the fertilizer spraying mechanism 322 are interchangeable.

[0064] The canopy cutter mechanism 200 includes a canopy cutter housing 201, a cutter drive mechanism cover 202, a compressed air nozzle 203, a compressed air pipe 204, an L-shaped operating mechanism connecting bracket 205, an operating mechanism bracket fixing bolt 206, an operating mechanism fixing bracket positioning nut 207, an L-shaped operating mechanism bracket fixing hole 208, a transition plate between the canopy cutter bracket and the cutter housing 209, a lower cutter 210, an upper cutter 211, a motor 212, a cylindrical cam mechanism 213, a grooved cam 214, and a soft sealing ring 215.

[0065] The tree cutter mechanism 220 includes: a tree cutter electric drive mechanism 221, a tree cutter and wheel steering bracket connecting bolt 222, a compressed air pipe 223, an air nozzle 224, an upper cutter blade 225, a lower cutter blade 226, a cutter drive mechanism cover 230, a tree cutter mechanism fixing plate 231, and a tree cutter outer shell 232; wherein the tree cutter electric drive mechanism 221 includes a motor 227, a cylindrical cam mechanism 228, and a grooved cam 229.

[0066] Please see Figure 8 , Figure 11 The transition plate 209 between the canopy cutter bracket and the cutter housing is welded to the canopy cutter housing 201 to increase the connection strength between the cutter bracket and the canopy cutter housing 201. The L-shaped operating mechanism connecting bracket 205 is welded to the transition plate 209 between the canopy cutter bracket and the cutter housing. The L-shaped operating mechanism bracket fixing hole 208 on the L-shaped operating mechanism connecting bracket 205 is used to adjust the height of the canopy cutter mechanism 200 through the operating mechanism bracket fixing bolt 206 and the operating mechanism fixing bracket positioning nut 207.

[0067] Please see Figure 7 , Figure 8 , Figure 11 The canopy cutter housing 201 internally includes a lower cutter 210, an upper cutter 211, a compressed air nozzle 203, a compressed air pipe 204, and a cutter drive mechanism cover 202. A soft sealing ring 215 is used to seal the compressed air pipe 204 as it passes through the canopy cutter housing 201. The tea harvesting hose 502 is fixed to the canopy cutter housing 201 via a tea harvesting hose connecting clamp 504.

[0068] The cutter drive mechanism housing 202 houses a drive motor 212, a cylindrical cam mechanism 213, and a grooved cam 214. One end of the grooved cam 214 is embedded in the groove of the cylindrical cam mechanism 213, and the other end is connected to the upper cutter 211. When the motor 212 rotates, it drives the cylindrical cam mechanism 213 to rotate. Since the grooved cam 214 is embedded in the cylindrical cam mechanism 213, it drives the upper cutter 211 to reciprocate. During harvesting, the rotation of the motor 212 ultimately drives the upper cutter 211 blade to reciprocate. At the same time, the compressed air nozzle 203 blows compressed air, causing the cut tea leaves to be blown into the tea harvesting bag 300 through the tea harvesting hose 502.

[0069] Please see Figure 6 The tree cutter housing 232 is connected to the tree cutter mechanism fixing plate 231. The tree cutter mechanism fixing plate 231 is threadedly connected to the wheel steering bracket connecting nut 233 welded on the steering wheel bracket wall 114 by the tree cutter and wheel steering bracket connecting bolt 222, so that the tree cutter mechanism 220 is fixed on the steering wheel bracket 110.

[0070] Please see Figure 4 and Figure 5 The tree cutter housing 232 contains: a tree cutter electric drive mechanism 221, a tree cutter connecting bolt to the wheel steering bracket 222, a crown cutter cylindrical cam mechanism 228, a compressed air pipe 223, an air nozzle 224, an upper cutting blade 225, and a lower cutting blade 226. The cutter drive mechanism cover 230 is located on top of the tree cutter housing 232. Inside the cutter drive mechanism cover 230 are a motor 227, a cylindrical cam mechanism 228, and a grooved cam 229. One end of the grooved cam 229 is embedded in the groove of the cylindrical cam mechanism 228, and the other end is connected to the upper cutting blade 225 via a cutter drive rod. When the motor 227 rotates, it drives the cylindrical cam mechanism 228 to rotate. Because the grooved cam 229 is embedded in the cylindrical cam mechanism 228, it drives the upper cutting blade 225 and the lower cutting blade 226 to reciprocate, thus cutting the tea leaves.

[0071] The air nozzle 224 installed on the compressed air pipe 223 is tilted upward at a 30-degree angle. During harvesting, the motor 227 drives the upper cutter 211 and the lower cutter 210 to move back and forth in opposite directions to cut the tea leaves. At the same time, the air nozzle 224 blows compressed air, causing the cut tea leaves to be blown from bottom to top and transported to the tea harvesting bag 300 through the tea harvesting hose 502.

[0072] Please see Figure 9 and Figure 10The canopy cutter mechanism 200 has a cutter drive mechanism base 702 fixed to the canopy cutter housing 201 by cutter drive mechanism base fixing bolts 703. There are two cylindrical cam supports 704 on the cutter drive mechanism base 702. The shaft of the cylindrical cam mechanism 213 passes through the bearing 705 on the cylindrical cam support 704 so that it can rotate flexibly. The grooved cam 214 on the upper cutter drive rod 709 is inserted into the cylindrical cam groove 711 on the upper part of the cylindrical cam mechanism 213 and is positioned by two sliding rods 706 passing through the bushing 708 on the upper cutter drive rod 709. The sliding rods 706 are finally fixed to the cylindrical cam support 704 by sliding rod fixing screws 707. Similarly, the grooved cam 214 of the lower cutter drive rod 710 is inserted into the cylindrical cam groove 711 of the lower cylindrical cam mechanism 213, and is positioned by two sliding rods 706 passing through the bushing 708 of the lower cutter drive rod 710. The sliding rods 706 are finally fixed to the cylindrical cam bracket 704 by the sliding rod fixing screw 707.

[0073] The shaft of motor 212 is connected to the shaft of cylindrical cam mechanism 213 via coupling 712. The upper cutter drive rod 709 is welded to the upper cutter 211, and the lower cutter drive rod 710 is welded to the lower cutter 210. One side of the Z-shaped cutter bonding plate 700 presses against the upper cutter 211 and the lower cutter 210, and the other side of the Z-shaped cutter bonding plate 700 is bolted to the canopy cutter housing 201 via cutter bonding plate fixing bolt 701.

[0074] When motor 212 rotates, it drives cylindrical cam mechanism 213 to rotate via coupling 712. Grooved cam 214 on upper cutter drive rod 709 and grooved cam 214 on lower cutter drive rod 710 move horizontally along cylindrical cam groove 711. The upper cutter drive rod 709 and lower cutter drive rod 710 drive the upper cutter 211 and lower cutter 210 to move in opposite directions to cut tea leaves.

[0075] The working principle of the tree cutting mechanism 220 is similar to that of the tree crown cutting mechanism 200.

[0076] Please see Figure 16 , Figure 14 and Figure 15 The tea harvesting bag tray 601 and the control cabinet and air compressor mounting tray 600 are both fixedly connected by tray fixing screws 606 and tray supports 603. The tray support 603 is equipped with two sliders 607, which are welded to the inner rod 193 and the outer rod 192 of the balance support at the welding surface 604 between the slider and the upper balance transverse support, respectively. In this way, the support of the tea harvesting bag tray 601 and the control cabinet and air compressor mounting tray 600 are a fixed-size tray, and the size does not need to be adjusted due to different slopes and the automatic adjustment mechanism 160 of the vehicle body width.

[0077] The control cabinet and air compressor mounting tray 600 is used for the installation of the control cabinet and air compressor. It is also very convenient to install the fuel generator 800 in the tray 600. The electric tea harvesting vehicle becomes a series plug-in hybrid electric tea harvesting vehicle powered by an internal combustion engine for the range extender, which is more suitable for long-term operation in hilly areas.

[0078] Please see Figure 16 When tea leaves need to be harvested, a spare folding harvest bag 301 can be placed in the tea harvest bag tray 601. A harvest bag 300 that is connected to the metal discharge port 306 that is fixed to the metal discharge port support rod 605 is placed on the folding harvest bag 301.

[0079] Please see Figure 1 Figure 2 Figure 3 , Figure 12 , Figure 13 and Figure 16 The canopy cutting mechanism 200 is fixedly connected to the operating mechanism positioning bracket 165 by an L-shaped operating mechanism connecting bracket 205 and the operating mechanism positioning bracket 165 with bolts, so that the canopy cutting mechanism 200 is in front of the square steel steering bracket 110 at the front of the electric tea harvesting vehicle. When the electric tea harvesting vehicle moves forward to harvest tea, the canopy cutting mechanism 200 rests on the square steel steering bracket 110, thereby relatively fixing the longitudinal position of the canopy cutting mechanism 200.

[0080] Please see Figure 16 , Figure 4 and Figure 5 The compressed air pipes from the air compressor 500 to the canopy cutter mechanism 200 and the blowing nozzle 224 of the tree body cutter mechanism 220 are connected by hoses; the tea harvesting hose 502 from the harvesting bag 300 is fixed to the hose four-way connector 503 with the tea harvesting hose clamp 504; the connecting pipes to the tea harvesting bag 300 and the canopy cutter mechanism 200 and the two tree body cutter mechanisms 210 are also connected by hoses and fixed by the tea harvesting hose clamp 504. Through the hose connection, the pipes of the electric tea harvesting vehicle can flexibly follow the lifting and lowering movement of the upper support lifting cylinder 130.

[0081] Please see Figure 16 When tea leaves need to be harvested, a spare folding harvest bag 301 can be placed in the tea harvest bag tray 601. A harvest bag 300 that is connected to the metal discharge port 306 fixed to the metal discharge port support rod 605 is placed on the folding harvest bag 301. Moreover, the metal discharge port 306 faces the rear of the vehicle, which makes it convenient for operators to change the harvest bag 300.

[0082] Please see Figure 17When foliar fertilizer is needed for tea leaves, a foliar fertilizer plastic bucket 320 can be placed in the tea harvest bag tray 601. The air compressor 500 output pressure is adjusted to 0.025 MPa. Compressed air hose 501 from the air compressor 500 pressurizes the foliar fertilizer plastic bucket 320 from the top. Liquid fertilizer hose 321 connects to the fertilizer spraying mechanism 322 from the bottom of the foliar fertilizer plastic bucket 320. (See also...) Figure 18 A diagram illustrating foliar fertilizer spraying and an estimate of its effects.

[0083] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electric tea harvesting vehicle suitable for hilly tea gardens, characterized in that: The agricultural machinery load is mounted on the vehicle frame of the harvesting vehicle. The vehicle frame includes square steel steering brackets, steering wheel bracket steering mechanisms, upper bracket lifting cylinders, transverse brackets, longitudinal brackets, and upper balance brackets. There are four square steel steering brackets, and the steering wheel bracket steering mechanisms are installed on the square steel steering brackets. Adjacent steering wheel bracket steering mechanisms connect to the transverse and longitudinal brackets to form the basic frame. Upper bracket lifting cylinders are installed on the steering wheel bracket steering mechanisms. Adjacent upper bracket lifting cylinders are connected to the upper balance brackets via four-way connectors to form the upper frame. Vertical adjustment mechanisms are installed on the square steel steering brackets and the transverse and longitudinal brackets, respectively, to adjust the angle between the square steel steering bracket and the transverse bracket and the longitudinal bracket. A vehicle width adjustment mechanism is installed on the transverse bracket to adjust the transverse dimension of the vehicle frame. A vehicle length adjustment mechanism is installed on the longitudinal bracket to adjust the longitudinal dimension of the vehicle frame. The transverse support includes: a single-ear ball joint, a transverse support square steel, and a vehicle width adjustment mechanism. The transverse support square steel is connected to the support plate located on the side of the lower flange of the steering mechanism of the steering wheel support through the single-ear ball joints on both sides. The longitudinal support includes: a single-ear ball joint, a longitudinal support square steel, and a vehicle length adjustment mechanism. The longitudinal support square steel is connected to the support plate located on the side of the lower flange of the steering mechanism of the steering wheel support through the single-ear ball joints on both sides. The upper-level balance support is a telescopic universal joint structure, including: a ball joint, an outer balance support rod, an inner balance support rod, and a transverse balance support inner bushing. The outer and inner balance support rods are each screwed to a ball joint at one end. The ball joint is mounted on the four-way connector of the upper-level support lifting cylinder. The transverse balance support inner bushing is positioned between the outer and inner balance support rods and is supported by them, ensuring that the outer and inner balance support rods can freely extend and retract. Multiple support rods, each composed of a ball joint, an outer balance support rod, an inner balance support rod, and a transverse balance support inner bushing, are transversely arranged within the upper-level balance support. The vehicle width adjustment mechanism is mounted on a transverse support square steel, dividing the transverse support square steel into two retractable structures. The vehicle width adjustment mechanism includes: a cross-shaft universal coupling, a forward threaded screw, a reverse threaded screw, a vehicle width adjustment stepper motor, a nut seat, and a slide. The cross-shaft universal coupling connects the forward threaded screw and the reverse threaded screw to its two sides respectively. The forward threaded screw and the reverse threaded screw are connected to the transverse support square steel on both sides via the nut seat. A slide is mounted on one side of the transverse support square steel, and the vehicle width adjustment stepper motor is mounted on the slide. The vehicle width adjustment stepper motor drives the screw to rotate. Since the screw is divided into a forward threaded screw and a reverse threaded screw, when the vehicle width adjustment stepper motor drives the screw to rotate, the nut seats will move closer or further apart to achieve the purpose of vehicle width adjustment. The vehicle length adjustment mechanism is mounted on the longitudinal support square steel, dividing the longitudinal support square steel into two telescopic structures. The vehicle length adjustment mechanism includes: a cross-shaft universal coupling, a forward threaded screw, a reverse threaded screw, a vehicle length adjustment stepper motor, a nut seat, and a slide. The cross-shaft universal coupling connects the forward threaded screw and the reverse threaded screw. The forward threaded screw and the reverse threaded screw are respectively connected to the longitudinal support square steel on both sides through the nut seat. A slide is set on one of the outer longitudinal support square steel sides, and a vehicle length adjustment stepper motor is set on the slide. The vehicle length adjustment stepper motor drives the screw to rotate. Since the screw is divided into a forward threaded screw and a reverse threaded screw, when the vehicle length adjustment stepper motor drives the screw to rotate, the nut seats will move closer or further apart to achieve the purpose of vehicle length adjustment. Bearings for the operating mechanism bracket are installed on the outer edges of both ends of the cross-shaft universal coupling. One end of the operating mechanism positioning bracket is embedded in the bearings of the operating mechanism bracket. The other end of the operating mechanism positioning bracket is connected to an L-shaped operating mechanism connecting bracket via bolts. Multiple positioning bracket fixing holes are provided on the operating mechanism positioning bracket, and multiple L-shaped operating mechanism bracket fixing holes are provided on the L-shaped operating mechanism connecting bracket. The operating mechanism positioning bracket and the L-shaped operating mechanism connecting bracket are connected by operating mechanism bracket fixing bolts and operating mechanism fixing bracket positioning nuts. Different hole positions allow for changes in the height of the L-shaped operating mechanism connecting bracket. A canopy cutting mechanism or a fertilizer spraying mechanism is connected to the bottom of the L-shaped operating mechanism connecting bracket. The canopy cutting mechanism or fertilizer spraying mechanism is fixed to the bottom of the L-shaped operating mechanism connecting bracket by welding. Changes in the height of the L-shaped operating mechanism connecting bracket consequently change the height of the connected canopy cutting mechanism or fertilizer spraying mechanism. The canopy cutting mechanism or fertilizer spraying mechanism connected to the L-shaped operating mechanism connecting bracket is set in front of the square steel steering bracket at the front of the electric tea harvesting vehicle. That is, the canopy cutting mechanism or fertilizer spraying mechanism rests on the square steel steering bracket, thereby relatively fixing the longitudinal position of the canopy cutting mechanism or fertilizer spraying mechanism. The tree cutting mechanism is fixed on the steering wheel bracket wall inside the square steel steering bracket. The agricultural machinery load includes a canopy cutting mechanism, a tree cutting mechanism, a harvest bag, a foliar fertilizer plastic bucket, a fertilizer spraying mechanism, an electrical control cabinet, an air compressor, a control cabinet and air compressor mounting tray, and a fuel generator. The canopy cutting mechanism and the fertilizer spraying mechanism are used interchangeably. The control cabinet, air compressor mounting tray, and tea harvesting bag tray all include a tray support, a slider welded to the upper lateral balance support, a metal discharge port support rod, tray fixing screws, a slider, and a slider welded to the upper lateral balance support. The tray support is equipped with two sliders, which are welded and fixed to the inner rod and outer rod of the balance support at the slider welded to the upper lateral balance support. The control cabinet, air compressor mounting tray, and tea harvesting bag tray are fixedly connected to the tray support bolts using tray fixing screws. Compressed air hoses are connected from the air compressor to the compressed air nozzles of the canopy cutter mechanism and the blowing nozzles of the tree cutter mechanism. Tea harvesting hoses from the canopy cutter mechanism and the two tree cutter mechanisms are connected to the tea harvesting bags through hose four-way connectors.

2. The electric tea harvesting vehicle suitable for hilly tea gardens according to claim 1, characterized in that... The canopy cutter mechanism includes a canopy cutter housing, a cutter drive mechanism cover, an L-shaped operating mechanism connecting bracket, and a transition plate between the canopy cutter bracket and the cutter housing. The transition plate between the canopy cutter bracket and the cutter housing is welded to the canopy cutter housing. The L-shaped operating mechanism connecting bracket is welded to the transition plate between the canopy cutter bracket and the cutter housing. The L-shaped operating mechanism bracket fixing hole on the L-shaped operating mechanism connecting bracket is used to adjust the height of the canopy cutter mechanism through the operating mechanism bracket fixing bolt and the operating mechanism fixing bracket positioning nut.

3. The electric tea harvesting vehicle suitable for hilly tea gardens according to claim 2, characterized in that... The canopy cutter housing includes a lower cutter, an upper cutter, a motor, a cylindrical cam mechanism, a grooved cam, a compressed air nozzle, a compressed air pipe, a cutter drive mechanism cover, and a soft sealing ring. The soft sealing ring is used to seal the compressed air pipe as it passes through the canopy cutter housing. The cutter drive mechanism is installed inside the cutter drive mechanism cover.

4. The electric tea harvesting vehicle suitable for hilly tea gardens according to claim 3, characterized in that... The cutter drive mechanism includes a cutter mounting plate, cutter mounting plate fixing bolts, a cutter drive mechanism base, cutter drive mechanism base fixing bolts, cylindrical cam brackets, bearings, sliding rods, sliding rod fixing screws, bushings, upper cutter drive rods, lower cutter drive rods, cylindrical cam grooves, and couplings. The cutter drive mechanism base is fixed to the canopy cutter housing by the cutter drive mechanism base fixing bolts. The cutter drive mechanism base has two cylindrical cam brackets, and the shaft of one cylindrical cam mechanism passes through the cylindrical cam bracket. The bearings on the upper part allow it to rotate flexibly. The grooved cam on the upper cutter drive rod is inserted into the groove of the upper cylindrical cam mechanism and positioned by two sliding rods passing through the bushing on the upper cutter drive rod. The sliding rods are finally fixed to the cylindrical cam bracket with sliding rod fixing screws. The grooved cam on the lower cutter drive rod is inserted into the groove of the lower cylindrical cam mechanism and positioned by two sliding rods passing through the bushing on the lower cutter drive rod. The sliding rods are finally fixed to the cylindrical cam bracket with sliding rod fixing screws.

5. An electric tea harvesting vehicle suitable for hilly tea gardens according to claim 4, characterized in that... The shaft of motor one is connected to the shaft of cylindrical cam mechanism one via a coupling. The upper cutter drive rod is welded to the upper cutter, and the lower cutter drive rod is welded to the lower cutter. One side of the Z-shaped cutter bonding plate presses against the upper and lower cutters, and the other side of the Z-shaped cutter bonding plate is fixed to the canopy cutter housing by cutter bonding plate fixing bolts. When motor one rotates, it drives cylindrical cam mechanism one to rotate via the coupling. The grooved cam one on the upper cutter drive rod and the grooved cam one on the lower cutter drive rod move horizontally back and forth along the groove of the cylindrical cam. The upper cutter drive rod and the lower cutter drive rod drive the upper cutter and the lower cutter to move back and forth in opposite directions to cut the tea leaves. At the same time, compressed air nozzles blow compressed air, so that the cut tea leaves are blown into the tea harvesting bag through the tea harvesting hose.

6. An electric tea harvesting vehicle suitable for hilly tea gardens according to claim 5, characterized in that... The tree cutter mechanism includes a tree cutter electric drive mechanism, a tree cutter and wheel steering bracket connecting bolts, a compressed air pipe, an air nozzle, an upper cutter blade, a lower cutter blade, a motor, a cylindrical cam mechanism, a grooved cam, a cutter drive mechanism cover, a tree cutter mechanism fixing plate, a tree cutter outer shell, and a wheel steering bracket connecting nut. The tree cutter outer shell is connected to the tree cutter mechanism fixing plate, and the tree cutter mechanism fixing plate is threadedly connected to the wheel steering bracket connecting nut welded to the steering wheel bracket wall through the tree cutter and wheel steering bracket connecting bolts, so that the tree cutter mechanism is fixed on the steering wheel bracket.

7. An electric tea harvesting vehicle suitable for hilly tea gardens according to claim 6, characterized in that... The tree cutter housing contains a second cutter drive mechanism cover, a tree cutter electric drive mechanism, a tree cutter and wheel steering bracket connecting bolts, a second crown cutter cylindrical cam mechanism, a second compressed air pipe, an air nozzle, an upper cutter blade, and a lower cutter blade. The air nozzle installed on the second compressed air pipe is angled upwards at 30 degrees. During harvesting, the second motor rotates, ultimately driving the upper and lower cutter blades to reciprocate within the crown cutter cylindrical cam mechanism. Simultaneously, the air nozzle blows compressed air, causing the cut tea leaves to be blown upwards and transported to the tea harvesting bag through the tea harvesting hose. The second cutter drive mechanism cover contains a cutter drive mechanism with the same internal structure as the first cutter drive mechanism cover.

8. An electric tea harvesting vehicle suitable for hilly tea gardens according to claim 1, characterized in that... The tea harvesting bag tray holds harvesting bags or plastic buckets of leaf fertilizer, while the air compressor mounting tray holds the air compressor, electrical control cabinet, and fuel generator.

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