Manual lifting type electric threshing vehicle

Abstract

The invention discloses a manual lifting type electric threshing vehicle, and relates to the technical field of threshing vehicles, the manual lifting type electric threshing vehicle comprises a chassis, the chassis comprises a frame, the top of the frame is slidably provided with a lifting assembly, and the top of the lifting assembly is provided with a working platform; the lifting assembly comprises an air spring, a lower sliding block, a cross arm and a ratchet wheel, a sliding shaft is installed at the bottom end of the cross arm, the other end of the sliding shaft is movably connected with the lower sliding block, a sliding groove is formed in the inner side wall of the frame, one end of the lower sliding block is fixedly connected with the air spring, the air spring is arranged in the frame, and the lower sliding block is slidably arranged in the sliding groove. A limiting plate is fixedly connected to the bottom of the sliding groove, a plurality of limiting holes are formed in the top of the limiting plate and distributed in the horizontal direction of the limiting plate in an array mode, a mounting hole is formed in the ratchet wheel, and double locking after the sliding plate is adjusted is achieved through wedge-shaped matching of an inserting block and a limiting block and spring self-locking of a plug pin and the limiting groove. And even if the device is used for a long time or vibrates frequently, the adjusted position does not generate unexpected displacement.

Description

Technical Field

[0001] This invention relates to the field of leaf-cutting vehicles, and more specifically, to a manually operated lifting electric leaf-cutting vehicle. Background Technology

[0002] A leaf-removing vehicle is a specialized auxiliary device used for leaf removal operations in greenhouses or facility agriculture. Its basic structure includes a chassis and a lifting device installed on the chassis. The top of the lifting device is connected to a work platform for carrying the operator. The operator can manually drive the lifting device to adjust the height of the platform so as to remove leaves from plants of different heights.

[0003] Existing leaf-cutting machines typically use a scissor lift device, in which two cross arms are hinged together by a pin. The bottom ends of the cross arms are slidably mounted on the chassis. In use, the operator manually lifts the platform upwards, driving the scissor lift device to unfold, causing the bottom ends of the two cross arms to move closer together, thus raising the platform. When it is necessary to lower the platform, the operator uses their own weight or manually presses down on the platform, causing the bottom ends of the two cross arms to move away from each other, and the platform lowers accordingly.

[0004] However, due to the heavy weight of the scissor lift and the working platform, manually lifting the platform requires overcoming significant resistance, and the operator needs to exert considerable force to raise the platform. Especially when carrying out long-term, high-frequency leaf-removing operations in greenhouses, the operator's physical strength is greatly depleted, and fatigue is easily generated. For female operators with relatively weak physical strength or older operators, manually operating the leaf-removing machine is quite difficult, and they may not even be able to complete the work independently, thus limiting the range of people who can use the leaf-removing machine. Summary of the Invention

[0005] One objective of this invention is to provide a manually operated lifting electric leaf-spraying cart, which solves the technical problems in related technologies such as the difficulty of manually lifting the platform, the high labor intensity of operation, and the high physical requirements for operators, making it difficult for female and elderly operators to use.

[0006] According to an embodiment of the present invention, a manual lifting electric leaf-cutting vehicle includes a chassis, the chassis includes a frame, a lifting assembly is slidably disposed on the top of the frame, and a working platform is mounted on the top of the lifting assembly; The lifting assembly includes a gas spring, a lower slide block, a cross arm, and a ratchet. A sliding shaft is installed at the bottom of the cross arm, and the other end of the sliding shaft is movably connected to the lower slide block. A groove is provided on the inner side wall of the frame. One end of the lower slide block is fixedly connected to the gas spring, which is located inside the frame. The lower slide block is slidably located inside the groove. A limit plate is fixedly connected to the bottom of the groove. Several limit holes are provided on the top of the limit plate, and the limit holes are arranged in an array along the horizontal direction of the limit plate. The ratchet has a mounting hole, and the sliding shaft is movably sleeved inside the mounting hole. The bottom of the ratchet and the limit hole form an abutting connection.

[0007] In a preferred embodiment, the chassis further includes a telescopic frame, which is fixedly connected to one side of the vehicle frame, and swivel wheels are fixedly connected to both ends of the telescopic frame.

[0008] In a preferred embodiment, the chassis further includes a motor, a drive chain, a drive shaft, and a mounting base. The motor is fixedly connected to the bottom of the frame, the motor output end is movably connected to one end of the drive chain, the other end of the drive chain is movably connected to the drive shaft, the drive shaft passes through the interior of the mounting base, and the drive shaft is rotatably connected to the inner wall of the mounting base. The mounting base is fixedly installed at the bottom of the frame, and two wheels are fixedly connected to both ends of the drive shaft. A storage box is fixedly installed on the top of the frame.

[0009] In a preferred embodiment, the lifting assembly further includes an upper slider, which is fixedly connected to one end of the top of the cross arm, and one end of the bottom of the cross arm slides along the direction of the slide groove via a lower slider, while the other end of the bottom of the cross arm is fixedly connected to the frame.

[0010] In a preferred embodiment, the work platform includes a lifting platform, the bottom of which is slidably connected to an upper slider, one end of the top of the cross arm is fixedly connected to the bottom of the lifting platform, and a handrail is installed on the top of the lifting platform.

[0011] In a preferred embodiment, a guide sleeve is slidably fitted onto the handrail, a footrest is fixedly connected to the outer side of the guide sleeve, and an electric pedal is installed on the lifting platform.

[0012] In a preferred embodiment, an adjustment assembly is installed inside the frame. The adjustment assembly includes an adjustment frame, a sliding plate, and a first spring. The adjustment frame is fixedly connected to the inner wall of the frame. A rectangular groove is formed inside the adjustment frame. The sliding plate is slidably connected along the groove of the rectangular groove. One end of the gas spring passes through the adjustment frame into the rectangular groove and is fixedly connected to one side of the sliding plate. The other side of the sliding plate is fixedly connected to one end of the first spring, and the other end of the first spring is fixedly connected to one end of the rectangular groove.

[0013] In a preferred embodiment, a limiting component is slidably installed inside the adjusting frame. The limiting component includes a limiting block and a pin. The limiting block is slidably disposed on the side wall of the adjusting frame. A limiting groove is formed in the side wall of the adjusting frame. A circular hole is formed inside the limiting block. The pin is movably connected inside the circular hole, and one end of the pin forms an abutting connection with the inside of the limiting groove. A baffle is fixedly connected to the periphery of the pin. A second spring is fixedly connected to one end of the baffle. The second spring is sleeved on the outer surface of the pin. Both the second spring and the baffle are located inside the circular hole.

[0014] In a preferred embodiment, the adjusting component further includes a plug block, which is fixedly connected to one side of the sliding plate. A wedge-shaped groove is provided inside the limiting block, one end of the plug block is adapted to the wedge-shaped groove, and one end of the plug block and one end of the pin form an abutting engagement.

[0015] In a preferred embodiment, a first lever is fixedly connected to the outer side of the insert block, and a second lever is fixedly connected to the outer side of the limiting block.

[0016] The beneficial effects of this invention are: This invention utilizes a horizontally mounted gas spring to provide auxiliary horizontal thrust when manually lifting the platform, significantly reducing the physical exertion of the operator. Even female or elderly operators with relatively weaker physical strength can easily complete the platform lifting operation, expanding the range of suitable users. Furthermore, a one-way locking mechanism is formed by a ratchet and a limiting hole on the limiting plate, achieving step-by-step locking during platform ascent. Even if the operator accidentally releases their grip, the platform will not fall, effectively preventing safety accidents caused by platform loss of control and improving operational safety.

[0017] This invention uses a sliding plate that slides within an adjustment frame to change the initial compression of the gas spring, thereby suppressing excessive thrust in summer and compensating for insufficient thrust in winter. This ensures a consistent operating feel for the leaf-driving machine across different seasons, solving the problem of inconsistent operating feel caused by temperature variations in traditional gas springs.

[0018] This invention achieves double locking after the sliding plate is adjusted by the wedge-shaped engagement of the insert block and the limiting block, and the spring self-locking of the pin and the limiting groove. Even with long-term use or frequent vibration, the adjusted position will not undergo unexpected displacement, thus ensuring the long-term stability of the gas spring thrust compensation effect. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the overall structural schematic diagrams of the present invention.

[0020] Figure 2 This is a front view structural diagram of the present invention.

[0021] Figure 3 This is the second schematic diagram of the overall structure of the present invention.

[0022] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0023] Figure 5 This is a schematic diagram of the gas spring and adjustment assembly of the present invention.

[0024] Figure 6 For the present invention Figure 5 Enlarged view of section B in the middle.

[0025] Figure 7 This is a cross-sectional structural diagram of the adjustment component and the limiting component of the present invention.

[0026] Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle.

[0027] In the diagram: 1. Chassis; 101. Frame; 102. Telescopic frame; 103. Casters; 104. Motor; 105. Drive chain; 106. Drive shaft; 107. Mounting base; 108. Riding wheel; 109. Storage box; 2. Lifting assembly; 201. Gas spring; 202. Lower slider; 203. Cross arm; 204. Upper slider; 205. Ratchet; 206. Limit plate; 207. Limit hole; 3. Working... Platform; 301, Lifting platform; 302, Handrail; 303, Guide sleeve; 304, Footrest; 305, Electric pedal; 4, Adjustment assembly; 401, Adjustment frame; 402, Sliding plate; 403, First spring; 404, First lever; 405, Insert block; 5, Limiting assembly; 501, Limiting groove; 502, Limiting block; 503, Pin; 504, Second spring; 505, Baffle; 506, Second lever. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0029] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a manual lifting electric leaf-cutting vehicle includes a chassis 1, the chassis 1 includes a frame 101, a lifting assembly 2 is slidably disposed on the top of the frame 101, and a working platform 3 is installed on the top of the lifting assembly 2. The lifting assembly 2 includes a gas spring 201, a lower slider 202, a cross arm 203, and a ratchet 205. A sliding shaft is installed at the bottom end of the cross arm 203, and the other end of the sliding shaft is movably connected to the lower slider 202. A sliding groove is provided on the inner side wall of the frame 101. One end of the lower slider 202 is fixedly connected to the gas spring 201. The gas spring 201 is located inside the frame 101. The lower slider 202 is slidably located inside the sliding groove. A limiting plate 206 is fixedly connected to the bottom of the sliding groove. A plurality of limiting holes 207 are provided on the top of the limiting plate 206. The limiting holes 207 are arranged in an array along the horizontal direction of the limiting plate 206. The ratchet 205 is provided with a mounting hole. The sliding shaft is movably sleeved inside the mounting hole. The bottom of the ratchet 205 and the limiting hole 207 form an abutting connection.

[0030] The chassis 1 also includes a telescopic frame 102, which is fixedly connected to one side of the frame 101. Universal wheels 103 are fixedly connected to both ends of the telescopic frame 102. The chassis 1 also includes a motor 104, a drive chain 105, a drive shaft 106, and a mounting base 107. The motor 104 is fixedly connected to the bottom of the frame 101. The output end of the motor 104 is movably connected to one end of the drive chain 105, and the other end of the drive chain 105 is movably connected to the drive shaft 106. The drive shaft 106 passes through the interior of the mounting base 107 and is rotatably connected to the inner wall of the mounting base 107. The mounting base 107 is fixedly installed at the bottom of the frame 101. Riding wheels 108 are fixedly connected to both ends of the drive shaft 106. 01 A storage box 109 is fixedly installed on the top; the lifting assembly 2 also includes an upper slider 204, which is fixedly connected to one end of the top of the cross arm 203, and one end of the bottom of the cross arm 203 slides along the slide groove via the lower slider 202, and the other end of the bottom of the cross arm 203 is fixedly connected to the frame 101; the work platform 3 includes a lifting platform 301, the bottom of the lifting platform 301 is slidably connected to the upper slider 204, one end of the top of the cross arm 203 is fixedly connected to the bottom of the lifting platform 301, and a handrail 302 is installed on the top of the lifting platform 301; a guide sleeve 303 is slidably sleeved on the handrail 302, and a footrest 304 is fixedly connected to the outer side of the guide sleeve 303; an electric pedal 305 is installed on the lifting platform 301.

[0031] It should be further explained that the gas spring 201 is horizontally installed inside the frame 101, with its fixed end fixedly connected to the sliding plate 402 and its movable end fixedly connected to the lower slider 202. The lower slider 202 is slidably installed in a groove on the inner side wall of the frame 101. One end of the lower slider 202 is movably connected to the sliding shaft at the bottom of the cross arm 203. The ratchet 205 is sleeved on the outside of the sliding shaft through a mounting hole. The bottom of the ratchet 205 and the limiting hole 207 at the top of the limiting plate 206 form a contact fit, which is used to achieve one-way locking during the platform's ascent to prevent the platform from accidentally falling.

[0032] In this embodiment, the operator controls the motor 104 to start and stop by stepping on the electric pedal 305. The power output of the motor 104 is transmitted to the drive shaft 106 via the transmission chain 105, causing the drive shaft 106 to rotate within the mounting base 107, thereby driving the track wheels 108 at both ends to rotate synchronously, enabling the vehicle to travel on the track. The telescopic frame 102 and its end casters 103 are used for movement and steering assistance in non-track areas. When the operator manually lifts the lifting platform 301, the cross arm 203 unfolds, and one end of its bottom slides along the slide groove towards the bottom end of the other cross arm 203 via the lower slider 202. The gas spring 201 is horizontally set, with one end fixedly connected to the lower slider 202. When the lower slider 202 slides, the gas spring 201 is compressed or stretched, and the resulting elastic force acts on the lower slider 202, providing horizontal auxiliary thrust, thereby reducing the force required for manual lifting. During the lifting process... In the middle, the ratchet 205, which is movably connected to the sliding shaft, moves with the cross arm 203. When the platform rises, the bottom of the ratchet 205 passes through each limiting hole 207 on the limiting plate 206 in sequence, and gets locked in each one, realizing one-way locking of the platform. If the operator releases his hand, the ratchet 205 abuts against the currently locked limiting hole 207, preventing the lower slider 202 from sliding in the opposite direction, thereby preventing the platform from falling accidentally. The top end of the cross arm 203 is slidably connected to the bottom of the lifting platform 301 through the upper slider 204. When the cross arm 203 is extended or retracted, the upper slider 204 slides accordingly at the bottom of the lifting platform 301 to adapt to the angle change of the cross arm 203 and ensure the stability of the lifting process. The guide sleeve 303 on the handrail 302 can slide up and down along the handrail 302, driving the foot pedal 304 to be adjusted to a position suitable for the operator's height. The storage box 109 is used to store leaf-cutting tools or temporarily store the cut leaves.

[0033] like Figure 5 , Figure 6 and Figure 7As shown in the above embodiment, since the gas spring 201 is filled with high-pressure nitrogen, its pressure is significantly affected by the ambient temperature. In the high-temperature environment of summer, the internal pressure of the gas spring 201 increases, resulting in excessive auxiliary thrust, causing the platform to rise too sharply and become difficult to control, posing a safety hazard. In the low-temperature environment of winter, the internal pressure of the gas spring 201 decreases, resulting in insufficient auxiliary thrust, making it difficult to lift the platform and increasing labor intensity. These problems lead to significant differences in the operating feel of the same leaf-spraying machine when used in different seasons, making it impossible to provide a stable and consistent auxiliary effect. Therefore, in this embodiment... In the frame 101, an adjustment assembly 4 is installed inside. The adjustment assembly 4 includes an adjustment frame 401, a sliding plate 402, and a first spring 403. The adjustment frame 401 is fixedly connected to the inner wall of the frame 101. A rectangular groove is opened inside the adjustment frame 401. The sliding plate 402 is slidably connected along the groove of the rectangular groove. One end of the gas spring 201 passes through the adjustment frame 401 into the rectangular groove, and the gas spring 201 is fixedly connected to one side of the sliding plate 402. The other side of the sliding plate 402 is fixedly connected to one end of the first spring 403. The other end of the first spring 403 is fixedly connected to one end of the rectangular groove.

[0034] It should be further explained that the adjustment component 4 is installed inside the frame 101, the adjustment frame 401 is fixedly connected to the inner wall of the frame 101, and a rectangular groove extending horizontally is opened inside it. The sliding plate 402 is set in the rectangular groove and can slide along the groove. One end of the gas spring 201 passes through the adjustment frame 401 and extends into the rectangular groove, and this end is fixedly connected to one side of the sliding plate 402. The other side of the sliding plate 402 is fixedly connected to one end of the first spring 403, and the other end of the first spring 403 is fixedly connected to the inner wall of the end of the rectangular groove.

[0035] In this embodiment, when it is necessary to adjust the auxiliary thrust of the gas spring 201, the operator manually pushes the sliding plate 402 to slide along the rectangular groove. When the sliding plate 402 moves, it drives the end of the gas spring 201, which is fixedly connected to it, to move synchronously, thereby changing the fixed position of the tail of the gas spring 201 in the frame 101, that is, changing the initial compression of the gas spring 201. The first spring 403 is compressed or stretched during the movement of the sliding plate 402, providing a reverse elastic force, making the adjustment process more stable, and assisting in maintaining the position stability of the sliding plate 402 after the adjustment is in place. Through the above adjustment, in summer, the tail of the gas spring 201 can be adjusted to a position away from the bottom of the cross arm 203 to reduce the initial compression and suppress excessive thrust; in winter, the tail of the gas spring 201 can be adjusted to a position close to the bottom of the cross arm 203 to increase the initial compression and compensate for insufficient thrust, so that the gas spring 201 can provide a stable and suitable auxiliary thrust in different ambient temperatures.

[0036] In the above embodiment, when the leaf-beating cart is continuously raised and lowered, the vibration generated by the raising and lowering may cause the gas spring 201 to loosen due to the repeated expansion and contraction, resulting in a deviation in the adjusted position and affecting the performance. Therefore, to solve this problem, in this embodiment, a limiting component 5 is slidably installed inside the adjusting frame 401. The limiting component 5 includes a limiting block 502 and a pin 503. The limiting block 502 is slidably disposed on the side wall of the adjusting frame 401, and a limiting groove 501 is formed in the side wall of the adjusting frame 401. A circular hole is formed inside the limiting block 502, and the pin 503 is movably connected inside the circular hole, with one end of the pin 503 connected to the limiting groove 502. 1. An internal contact connection is formed. A baffle 505 is fixedly connected to the periphery of the pin 503. A second spring 504 is fixedly connected to one end of the baffle 505. The second spring 504 is sleeved on the outer surface of the pin 503. Both the second spring 504 and the baffle 505 are located inside the circular hole. The adjusting component 4 also includes a plug 405. The plug 405 is fixedly connected to one side of the sliding plate 402. A wedge-shaped groove is opened inside the limiting block 502. One end of the plug 405 is adapted to the wedge-shaped groove, and one end of the plug 405 and one end of the pin 503 form a contact engagement. A first lever 404 is fixedly connected to the outer side of the plug 405, and a second lever 506 is fixedly connected to the outer side of the limiting block 502.

[0037] like Figure 5 , Figure 7 and Figure 8 As shown in this embodiment, after the sliding plate 402 is adjusted to the target position, the operator pushes the limiting block 502 to slide on the side wall of the adjusting frame 401 via the second lever 506, causing the limiting block 502 to move towards the insertion block 405. As the limiting block 502 moves, one end of the insertion block 405 gradually inserts into the wedge-shaped groove inside the limiting block 502. During the insertion process, the end of the insertion block 405 abuts against the end of the pin 503, pushing the pin 503 to compress the second spring 504 and retract within the circular hole. When the insertion block 405 is fully inserted into the wedge-shaped groove, One end of the pin 503 is inserted into the limiting groove 501, and the end of the pin 503 abuts against the end of the insert block 405. At the same time, the other end of the pin 503 always keeps in contact with the limiting groove 501 on the side wall of the adjusting frame 401, thereby achieving double locking of the insert block 405 and the limiting block 502. When it is necessary to adjust the position of the sliding plate 402 again, the operator can release the above-mentioned locking state by using the first lever 404 or the second lever 506. This structure utilizes the wedge fit and spring self-locking principle to effectively prevent the sliding plate 402 from undergoing unexpected displacement due to lifting vibration.

[0038] The working principle of this invention is as follows: The operator stands on the lifting platform 301 and controls the motor 104 to start and stop by stepping on the electric pedal 305. After the motor 104 starts, its output power is transmitted to the drive shaft 106 via the transmission chain 105, driving the drive shaft 106 to rotate within the mounting base 107. This, in turn, drives the track wheels 108 at both ends of the drive shaft 106 to rotate synchronously, enabling the entire vehicle to move on the greenhouse track. When the operator manually lifts the lifting platform 301, the cross arm 203 unfolds, and one end of its bottom slides along the groove on the inner side wall of the frame 101 via the lower slider 202 towards the bottom end of the other cross arm 203. The gas spring 201 is horizontally mounted inside the frame 101, with one end fixedly connected to the lower slider 202 and the other end fixedly connected to the sliding plate 402. When the lower slider 202 slides, the gas spring 201 is compressed or stretched, and the resulting elastic force acts on the lower slider 202, providing auxiliary horizontal thrust. During the lifting process, the ratchet 205, which is movably sleeved with the sliding shaft, moves synchronously with the cross arm 203. When the platform rises, the bottom of the ratchet 205 sequentially passes through each limiting hole 207 on the limiting plate 206, locking into each hole to achieve one-way locking of the platform. If the operator releases the ratchet, the ratchet 205 abuts against the currently engaged limiting hole 207, preventing the lower slider 202 from sliding in the opposite direction, thus effectively preventing the platform from accidentally falling.

[0039] When the auxiliary thrust of the gas spring 201 needs to be adjusted, the operator manually pushes the sliding plate 402 to slide along the rectangular groove in the adjustment frame 401. When the sliding plate 402 moves, it drives the end of the gas spring 201, which is fixedly connected to it, to move synchronously, thereby changing the fixed position of the tail of the gas spring 201 in the frame 101, that is, changing the initial compression of the gas spring 201. The first spring 403 is compressed or stretched during the movement of the sliding plate 402, providing a reverse elastic force, making the adjustment process smoother, and assisting in maintaining the position stability of the sliding plate 402 after the adjustment is in place. Through the above adjustment, in summer, the tail of the gas spring 201 can be adjusted to a position away from the bottom of the cross arm 203 to reduce the initial compression and suppress excessive thrust; in winter, the tail of the gas spring 201 can be adjusted to a position close to the bottom of the cross arm 203 to increase the initial compression and compensate for insufficient thrust, so that the gas spring 201 can provide a stable and suitable auxiliary thrust in different ambient temperatures.

[0040] To prevent displacement of the adjusted sliding plate 402 due to lifting vibration, after the sliding plate 402 is adjusted to the target position, the operator pushes the limiting block 502 to slide on the side wall of the adjusting frame 401 using the second lever 506, causing the limiting block 502 to move towards the insertion block 405. As the limiting block 502 moves, one end of the insertion block 405 gradually inserts into the wedge-shaped groove inside the limiting block 502. During insertion, the end of the insert block 405 abuts against the end of the pin 503, pushing the pin 503 to compress the second spring 504 and retract within the circular hole. When the insert block 405 is fully inserted into the wedge groove, one end of the pin 503 inserts into the limiting groove 501, and the end of the pin 503 abuts against the end of the insert block 405. At the same time, the other end of the pin 503 always abuts against the limiting groove 501 on the side wall of the adjusting frame 401, thereby achieving double locking of the insert block 405 and the limiting block 502. When it is necessary to adjust the position of the sliding plate 402 again, the operator can release the locking state by using the first lever 404 or the second lever 506.

[0041] One end of the cross arm 203 is slidably connected to the bottom of the lifting platform 301 via an upper slider 204. When the cross arm 203 extends or retracts, the upper slider 204 slides accordingly at the bottom of the lifting platform 301 to adapt to changes in the angle of the cross arm 203 and ensure the stability of the lifting process. The guide sleeve 303 on the handrail 302 can slide up and down along the handrail 302, driving the foot pedal 304 to be adjusted to a position suitable for the operator's height, improving working comfort. The storage box 109 is used to store leaf-cutting tools or temporarily store cut leaves for convenient operation.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A manual lifting electric leaf-cutting vehicle, comprising a chassis (1), the chassis (1) comprising a frame (101), a lifting assembly (2) slidably disposed on the top of the frame (101), and a working platform (3) mounted on the top of the lifting assembly (2). Its features are, The lifting assembly (2) includes a gas spring (201), a lower slider (202), a cross arm (203), and a ratchet (205). A sliding shaft is installed at the bottom end of the cross arm (203), and the other end of the sliding shaft is movably connected to the lower slider (202). A sliding groove is provided on the inner side wall of the frame (101). One end of the lower slider (202) is fixedly connected to the gas spring (201). The gas spring (201) is located inside the frame (101). The lower slider (202) is slidably located inside the sliding groove. A limiting plate (206) is fixedly connected to the bottom of the sliding groove. A plurality of limiting holes (207) are provided on the top of the limiting plate (206). The limiting holes (207) are arranged in an array along the horizontal direction of the limiting plate (206). The ratchet (205) is provided with an installation hole. The sliding shaft is movably sleeved inside the installation hole. The bottom of the ratchet (205) and the limiting hole (207) form an abutting connection.

2. The manually operated lifting electric leaf-beating cart according to claim 1, characterized in that, The chassis (1) also includes a telescopic frame (102), which is fixedly connected to one side of the frame (101), and universal wheels (103) are fixedly connected to both ends of the telescopic frame (102).

3. The manually operated lifting electric leaf-beating cart according to claim 1, characterized in that, The chassis (1) also includes a motor (104), a transmission chain (105), a transmission shaft (106), and a mounting base (107). The motor (104) is fixedly connected to the bottom of the frame (101). The output end of the motor (104) is movably connected to one end of the transmission chain (105), and the other end of the transmission chain (105) is movably connected to the transmission shaft (106). The transmission shaft (106) passes through the interior of the mounting base (107), and the transmission shaft (106) is rotatably connected to the inner wall of the mounting base (107). The mounting base (107) is fixedly installed at the bottom of the frame (101). The two ends of the transmission shaft (106) are respectively fixedly connected to the track wheels (108). A storage box (109) is fixedly installed on the top of the frame (101).

4. The manually operated lifting electric leaf-beating cart according to claim 1, characterized in that, The lifting assembly (2) also includes an upper slider (204), which is fixedly connected to one end of the top of the cross arm (203). One end of the bottom of the cross arm (203) slides along the groove direction via a lower slider (202), and the other end of the bottom of the cross arm (203) is fixedly connected to the frame (101).

5. A manually operated lifting electric leaf-beating cart according to claim 1, characterized in that, The working platform (3) includes a lifting platform (301), the bottom of the lifting platform (301) is slidably connected to the upper slider (204), one end of the top of the cross arm (203) is fixedly connected to the bottom of the lifting platform (301), and a handrail (302) is installed on the top of the lifting platform (301).

6. A manually operated lifting electric leaf-beating cart according to claim 5, characterized in that, A guide sleeve (303) is slidably sleeved on the handrail (302), and a footrest (304) is fixedly connected to the outer side of the guide sleeve (303). An electric pedal (305) is installed on the lifting platform (301).

7. A manually operated lifting electric leaf-beating cart according to claim 1, characterized in that, An adjustment assembly (4) is installed inside the frame (101). The adjustment assembly (4) includes an adjustment frame (401), a sliding plate (402), and a first spring (403). The adjustment frame (401) is fixedly connected to the inner wall of the frame (101). A rectangular groove is opened inside the adjustment frame (401). The sliding plate (402) is slidably connected along the groove of the rectangular groove. One end of the gas spring (201) passes through the adjustment frame (401) into the rectangular groove. The gas spring (201) is fixedly connected to one side of the sliding plate (402). The other side of the sliding plate (402) is fixedly connected to one end of the first spring (403). The other end of the first spring (403) is fixedly connected to one end of the rectangular groove.

8. A manually operated lifting electric leaf-beating cart according to claim 7, characterized in that, The limiting component (5) is slidably installed inside the adjusting frame (401). The limiting component (5) includes a limiting block (502) and a pin (503). The limiting block (502) is slidably disposed on the side wall of the adjusting frame (401). A limiting groove (501) is opened on the side wall of the adjusting frame (401). A circular hole is opened inside the limiting block (502). The pin (503) is movably connected inside the circular hole, and one end of the pin (503) forms an abutting connection with the inside of the limiting groove (501). A baffle (505) is fixedly connected to the periphery of the pin (503). A second spring (504) is fixedly connected to one end of the baffle (505). The second spring (504) is sleeved on the outer surface of the pin (503). The second spring (504) and the baffle (505) are both located inside the circular hole.

9. A manually operated lifting electric leaf-beating cart according to claim 8, characterized in that, The adjustment component (4) also includes a plug (405), which is fixedly connected to one side of the sliding plate (402). The limiting block (502) has a wedge-shaped groove inside. One end of the plug (405) is adapted to the wedge-shaped groove, and one end of the plug (405) and one end of the pin (503) form a contacting fit.

10. A manually operated lifting electric leaf-beating cart according to claim 9, characterized in that, The outer side of the insert (405) is fixedly connected to a first lever (404), and the outer side of the limiting block (502) is fixedly connected to a second lever (506).

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