A walk behind self-propelled chassis

Abstract

The utility model discloses a hand -held self -propelled chassis belongs to agricultural machinery and equipment technical field. The chassis includes frame, power output assembly, gearbox subassembly and operation control subassembly, and power output assembly is connected power input clutch disc and walking power output wheel through power output shaft, and gearbox subassembly contains shift lever, gear change subassembly, drive steering assembly and wheel drive assembly, realizes and goes ahead, retreats and nimble steering function, and operation control subassembly controls steering and clutches through handrail and handle, and the chassis realizes speed change and goes ahead and retreats switching through the gear change of shift lever control, and adopts left and right wheel independent control structure, has small turning radius, simple operation etc. Characteristics, especially suitable for hilly, terrace etc. Complex terrain's agricultural operation.

Description

Technical Field

[0001] This utility model applies to the field of agricultural machinery and equipment technology, and provides a hand-held self-propelled chassis. Background Technology

[0002] As agriculture becomes increasingly large-scale and centralized, agricultural machinery is also developing towards larger scales. However, my country's terrain is complex, and even today there are still many scattered farming areas, such as hilly, terraced, and sloping areas. In these areas, farmland is scattered and the terrain is complex, making it impossible for medium and large machines to enter for harvesting operations. Manual harvesting is inefficient and labor-intensive. Therefore, some small-scale harvesting equipment is still needed for harvesting operations. For these areas, there is also a need for flexible movement control and simple operation. Utility Model Content

[0003] Therefore, this utility model provides a self-propelled hand-held chassis that achieves forward and reverse movement, as well as a small turning radius, making it suitable for moving in complex terrains, through a gearbox assembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a hand-operated self-propelled chassis, comprising:

[0005] A rack is used to mount various components;

[0006] A power output assembly includes a rotatably mounted power output shaft, on which a power input clutch disc, a release rocker arm, and a travel power output wheel are mounted. The power input clutch disc is driven to the power output shaft, and the release rocker arm is used to control the engagement and disengagement between the power input clutch disc and the power output shaft.

[0007] A gearbox assembly includes a gearshift lever, a gear shifting assembly, a drive steering assembly, and a wheel drive assembly. The gear shifting assembly includes a gear shift drive frame rotatably connected to a gear shift shaft. A power input wheel, a first gear, and a second gear are mounted on the gear shift shaft. The power input wheel is driven by a power output wheel. The drive steering assembly includes a steering power input shaft, a left steering rocker arm, and a right steering rocker arm. A steering power input gear, a left wheel power output gear, and a right wheel power output gear are mounted on the steering power input shaft. The steering power input gear is detachably driven by both the left and right wheel power output gears. The left steering rocker arm controls the left wheel power output gear. The drive clutch between the wheel and the steering power input gear, the right steering rocker arm is used to control the drive clutch between the right wheel power output gear and the steering power input gear, the gear shift lever can drive the gear shift drive frame so that the first gear or the second gear can engage or disengage with the steering power input gear, the wheel drive assembly includes a left wheel power input gear and a right wheel power input gear, the left wheel power input gear is driven and connected to the left wheel drive shaft, the right wheel power input gear is driven and connected to the right wheel drive shaft, the left wheel drive shaft is equipped with a left travel wheel, the right wheel drive shaft is equipped with a right travel wheel, the left wheel power input gear is engaged with the left wheel power output gear, and the right wheel power input gear is engaged with the right wheel power output gear;

[0008] The operation control components include a left armrest, a right armrest, a left steering handle, a right steering handle, and a main clutch control handle. The left steering handle is connected to the left steering rocker arm via a cable and is used to control the rotation of the left steering rocker arm. The right steering handle is connected to the right steering rocker arm via a cable and is used to control the rotation of the right steering rocker arm. The main clutch control handle is connected to the release rocker arm via a cable and is used to control the rotation of the release rocker arm.

[0009] Furthermore, the left wheel power output gear is provided with a left drive block, the right wheel power output gear is provided with a right drive block, and the steering power input gear is provided with a left drive slot adapted to the left drive block and a right drive slot adapted to the right drive block. Both the left wheel power output gear and the right wheel power output gear are connected to a return spring. In the initial state, the left drive block is engaged in the left drive slot and the right drive block is engaged in the right drive slot.

[0010] Furthermore, the gear shifting assembly also includes a reverse gear drive frame, which is rotatably connected to a reverse gear drive gear. The reverse gear drive gear meshes with the first gear shifting gear, and the gear shift lever can drive the reverse gear drive frame to make the reverse gear drive gear mesh with or disengage from the steering power input gear.

[0011] Furthermore, the power input clutch disc includes a power input pulley, and both the travel power input wheel and the travel power output wheel are in the form of sprockets, with the travel power input wheel and the travel power output wheel connected by a chain drive.

[0012] Furthermore, the left and right handrails are fixedly connected by a handrail connecting rod.

[0013] Furthermore, a header mounting bracket is installed on the front side of the frame, a header drive sprocket is also installed on the power output shaft, and the operation control component also includes a header control handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the gear shifting component is controlled by a gear lever to achieve gear shifting and forward / reverse switching, flexibly adapting to different work scenarios. The left and right driving wheels are independently controlled by the left and right wheel power output gears, respectively, enabling flexible turning on the spot. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a self-propelled hand-held chassis mentioned in this utility model;

[0017] Figure 2 This is a schematic diagram of the power output component mentioned in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the operation control component mentioned in this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the gearbox assembly mentioned in this utility model;

[0020] Figure 5 for Figure 4 Top view of the internal structure of the transmission assembly;

[0021] Figure 6 This is a schematic diagram of the gear shifting component mentioned in this utility model;

[0022] Figure 7 This is a schematic diagram of the drive steering assembly mentioned in this utility model.

[0023] In the picture:

[0024] 100. Rack;

[0025] 200 Power take-off assembly; 210 Power take-off shaft; 220 Power input clutch disc; 230 Separator rocker arm; 240 Traveling power take-off wheel; 250 Cutting table drive sprocket.

[0026] 300. Gearbox assembly; 310. Gear lever; 320. Gear shifting assembly; 321. Gear drive frame; 322. Reverse drive frame; 323. Gear shaft; 324. First gear; 325. Second gear; 326. Reverse drive gear; 330. Travel power input wheel; 340. Drive steering assembly; 341. Steering power input gear; 342. Left wheel power output gear; 343. Right wheel power output gear; 344. Left steering rocker arm; 345. Right steering rocker arm; 350. Wheel drive assembly; 351. Left wheel power input gear; 352. Right wheel power input gear; 353. Left wheel drive shaft; 354. Right wheel drive shaft;

[0027] 400. Operation control assembly; 410. Left handrail; 420. Right handrail; 430. Left steering handle; 440. Right steering handle; 450. Main clutch control handle; 460. Handrail connecting rod; 470. Cutting table control handle.

[0028] 500. Left-hand drive wheel.

[0029] 600. Right-hand drive wheel.

[0030] 700. Cutting table mounting bracket. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example, see attached document Figure 1 The present invention provides a self-propelled hand-held chassis, including a frame 100 for mounting various components. A power output component 200, a gearbox component 300, and an operation control component 400 are mounted on the frame 100. In order to assist in the installation of equipment, a cutting table mounting bracket 700 is mounted on the front side of the frame 100.

[0033] Power take-off assembly 200 is used to transfer power from the diesel engine power source to gearbox assembly 300 and other auxiliary equipment (such as headers, plows, etc.), as shown in the attached document. Figure 2As shown, it includes a rotatable power output shaft 210, on which a power input clutch disc 220, a release rocker arm 230, a header drive sprocket 250, and a travel power output wheel 240 are mounted. The power input clutch disc 220 is drivenly connected to the power output shaft 210. The power input clutch disc 220 includes a power input pulley, which transmits power to the subsequently installed diesel engine through a belt drive mechanism, thereby driving the header drive sprocket 250 and the travel power output wheel 240 to run. The release rocker arm 230 is used to control the engagement and disengagement between the power input clutch disc 220 and the power output shaft 210. This part of the structure is conventional technology and will not be described in detail here.

[0034] As attached Figure 4 Appendix Figure 5 As shown, the gearbox assembly 300 includes a gearshift lever 310, a gear shifting assembly 320, a drive steering assembly 340, and a wheel drive assembly 350, as illustrated in the attached diagram. Figure 6 As shown, the gear shifting assembly 320 includes a gear shift drive frame 321 and a reverse gear drive frame 322. The gear shift drive frame 321 is rotatably connected to a gear shift shaft 323, on which a travel power input wheel 330, a first gear 324, and a second gear 325 are mounted. Both the travel power input wheel 330 and the travel power output wheel 240 are sprockets, connected by a chain drive. The reverse gear drive frame 322 is rotatably connected to a reverse gear drive gear 326, which meshes with the first gear 324. The gear shift lever 310 can drive the reverse gear drive frame 322, thereby engaging or disengaging the reverse gear drive gear 326 from the steering power input gear 341. Figure 7As shown, the drive steering assembly 340 includes a steering power input shaft, a left steering rocker arm 344, and a right steering rocker arm 345. A steering power input gear 341, a left wheel power output gear 342, and a right wheel power output gear 343 are mounted on the steering power input shaft. The steering power input gear 341 is detachably driven connected to both the left and right wheel power output gears 342 and 343. The left steering rocker arm 344 controls the drive clutch between the left wheel power output gear 342 and the steering power input gear 341, and the right steering rocker arm 345 controls the drive clutch between the right wheel power output gear 343 and the steering power input gear 341. Specifically, the left wheel power output gear 342 is equipped with a left drive lever. The right wheel power output gear 343 is equipped with a right drive block, and the steering power input gear 341 is equipped with a left drive slot adapted to the left drive block and a right drive slot adapted to the right drive block. Both the left wheel power output gear 342 and the right wheel power output gear 343 are connected to a return spring. In the initial state, the left drive block is engaged in the left drive slot, and the right drive block is engaged in the right drive slot. The gearshift lever 310 can drive the gearshift drive frame 321 to engage or disengage the first gear 324 or the second gear 325 with the steering power input gear 341. The wheel drive assembly 350 includes a left wheel power input gear 351 and a right wheel power input gear 352. The left wheel power input gear 351 is driven by... The left drive shaft 353 is connected to the right drive shaft 354 via the right drive input gear 352. The left drive shaft 353 mounts the left travel wheel 500, and the right drive shaft 354 mounts the right travel wheel 600. The left drive input gear 351 meshes with the left drive output gear 342, and the right drive input gear 352 meshes with the right drive output gear 343. The aforementioned gearbox assembly 300 provides four travel power output gears for the self-propelled chassis: low gear, high gear, reverse gear, and neutral. Switching between these four gears is achieved by the gear shift lever 310 controlling the gear shifting assembly 320. In neutral, the gear shift lever 310 controls the gear shift drive frame 321 and the reverse gear drive frame 322, enabling the first gear shift... Gear 324, the second transmission gear 325, and the reverse drive gear 326 are all disengaged from the steering power input gear 341. At this time, the power from the travel power input wheel 330 cannot be transmitted to the drive steering assembly 340, and the self-propelled chassis is in neutral. However, the diesel engine can still run and provide power to the auxiliary equipment mounted on the cutter mounting frame 700. In low gear, the gearshift lever 310 controls the transmission drive frame 321 and the reverse drive frame 322, ensuring that the first transmission gear 324 is engaged with the steering power input gear 341, while the second transmission gear 325 and the reverse drive gear 326 are disengaged from the steering power input gear 341.At this time, the power from the travel power input wheel 330 is transmitted to the drive steering assembly 340 through the first transmission gear 324. Within the drive steering assembly 340, the steering power input gear 341 transmits power to the left wheel power output gear 342 and the right wheel power output gear 343, thereby driving the left travel wheel 500 and the right travel wheel 600. The high-speed gear operates similarly to the low-speed gear, controlling the transmission drive frame 321 and the reverse drive frame 322 via the gear lever 310, causing the second transmission gear 325 to engage with the steering wheel... All force input gears 341 are engaged, while the first transmission gear 324 and the reverse drive gear 326 are disengaged from the steering power input gear 341. At this time, the power from the travel power input wheel 330 is transmitted to the drive steering assembly 340 via the second transmission gear 325. The gear ratio between the second transmission gear 325 and the first transmission gear 324 determines the change in their output speeds, thus affecting the rotational speeds of the left travel wheel 500 and the right travel wheel 600. In reverse gear, the power is transmitted via the gear lever 31. The control system 321 controls the transmission drive frame and the reverse drive frame 322, ensuring that the reverse drive gear 326 is engaged with the steering power input gear 341, while the first transmission gear 324 and the second transmission gear 325 are disengaged from the steering power input gear 341. Since the first transmission gear 324 is engaged with the reverse drive gear 326, the power from the travel power input wheel 330 is transmitted through the first transmission gear 324 to the reverse drive gear 326, and then to the drive steering assembly 340. Power is transmitted between the first transmission gear 324 and the steering power input gear 341 via the reverse drive gear 326. Therefore, the steering direction of the steering power input gear 341 is opposite to that of the lower gear. This power is then transmitted to the left and right driving wheels 500, thus enabling the reversing operation of the self-propelled chassis. The steering operation of the self-propelled chassis depends on the engagement / disengagement state of the drive clutch between the left wheel power output gear 342, the right wheel power output gear 343, and the steering power input gear 341, as detailed in the attached diagram. Figure 7As shown, in the initial state, the left drive block is engaged in the left drive slot and the right drive block is engaged in the right drive slot. At this time, the power of the steering power input gear 341 can be synchronously transmitted to the left wheel power output gear 342 and the right wheel power output gear 343. When a left turn is required, the left steering rocker arm 344 rotates to push the left wheel power output gear 342 away from the steering power input gear 341, so that the left drive block is separated from the left drive slot. At this time, the power of the steering power input gear 341 cannot be transmitted to the left wheel power output gear 342. At this time, the left wheel power output gear 342 stops rotating, while the right wheel power output gear 343 continues to rotate. This results in the left driving wheel 500 stopping while the right driving wheel 600 continues to rotate, thus achieving the effect of turning to the left. When a right turn is required, it is the opposite of the left turn. The right steering rocker arm 345 rotates to push the right wheel power output gear 343 away from the steering power input gear 341.

[0035] The operation control assembly 400 includes a left handrail 410, a right handrail 420, a left steering handle 430, a right steering handle 440, a header control handle 470, and a main clutch control handle 450. The left handrail 410 and the right handrail 420 are fixedly connected by a handrail connecting rod 460. The left steering handle 430 is connected to the left steering rocker arm 344 by a cable and is used to control the rotation of the left steering rocker arm 344, thereby controlling the left turn operation of the self-propelled chassis. The right steering handle 440 is connected to the right steering rocker arm 345 by a cable and is used to control the rotation of the right steering rocker arm 345, thereby controlling the right turn operation of the self-propelled chassis. The main clutch control handle 450 is connected to the release rocker arm 230 by a cable and is used to control the rotation of the release rocker arm 230, thereby controlling the connection between the power input clutch disc 220 and the power output shaft 210. The header control handle 470 is used to connect auxiliary equipment (such as a header).

[0036] In summary, the self-propelled chassis mentioned in this embodiment controls the gear shifting component 320 via the gear lever 310 to achieve gear shifting and forward / reverse switching, flexibly adapting to different working scenarios. The left wheel 500 and right wheel 600 are independently controlled by the left wheel power output gear 342 and the right wheel power output gear 343, respectively, to achieve flexible turning on the spot and adapt to various complex and narrow terrains.

[0037] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0038] The above are merely preferred embodiments of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A self-propelled, hand-held chassis, characterized in that, include: A rack is used to mount various components; A power output assembly includes a rotatably mounted power output shaft, on which a power input clutch disc, a release rocker arm, and a travel power output wheel are mounted. The power input clutch disc is driven to the power output shaft, and the release rocker arm is used to control the engagement and disengagement between the power input clutch disc and the power output shaft. A gearbox assembly includes a gearshift lever, a gear shifting assembly, a drive steering assembly, and a wheel drive assembly. The gear shifting assembly includes a gear shift drive frame rotatably connected to a gear shift shaft. A power input wheel, a first gear, and a second gear are mounted on the gear shift shaft. The power input wheel is driven by a power output wheel. The drive steering assembly includes a steering power input shaft, a left steering rocker arm, and a right steering rocker arm. A steering power input gear, a left wheel power output gear, and a right wheel power output gear are mounted on the steering power input shaft. The steering power input gear is detachably driven by both the left and right wheel power output gears. The left steering rocker arm controls the left wheel power output gear. The drive clutch between the wheel and the steering power input gear, the right steering rocker arm is used to control the drive clutch between the right wheel power output gear and the steering power input gear, the gear shift lever can drive the gear shift drive frame so that the first gear or the second gear can engage or disengage with the steering power input gear, the wheel drive assembly includes a left wheel power input gear and a right wheel power input gear, the left wheel power input gear is driven and connected to the left wheel drive shaft, the right wheel power input gear is driven and connected to the right wheel drive shaft, the left wheel drive shaft is equipped with a left travel wheel, the right wheel drive shaft is equipped with a right travel wheel, the left wheel power input gear is engaged with the left wheel power output gear, and the right wheel power input gear is engaged with the right wheel power output gear; The operation control components include a left armrest, a right armrest, a left steering handle, a right steering handle, and a main clutch control handle. The left steering handle is connected to the left steering rocker arm via a cable and is used to control the rotation of the left steering rocker arm. The right steering handle is connected to the right steering rocker arm via a cable and is used to control the rotation of the right steering rocker arm. The main clutch control handle is connected to the release rocker arm via a cable and is used to control the rotation of the release rocker arm.

2. The self-propelled hand-held chassis according to claim 1, characterized in that, The left wheel power output gear is provided with a left drive block, and the right wheel power output gear is provided with a right drive block. The steering power input gear is provided with a left drive slot that matches the left drive block and a right drive slot that matches the right drive block. Both the left wheel power output gear and the right wheel power output gear are connected to a return spring. In the initial state, the left drive block is engaged in the left drive slot and the right drive block is engaged in the right drive slot.

3. A self-propelled hand-held chassis according to claim 2, characterized in that, The gear shifting assembly also includes a reverse gear drive frame, which is rotatably connected to a reverse gear drive gear. The reverse gear drive gear meshes with the first gear shifting gear, and the gear shift lever can drive the reverse gear drive frame to make the reverse gear drive gear mesh with or disengage from the steering power input gear.

4. A self-propelled hand-held chassis according to any one of claims 1-3, characterized in that, The power input clutch disc includes a power input pulley, and both the travel power input wheel and the travel power output wheel are in the form of sprockets. The travel power input wheel and the travel power output wheel are connected by a chain drive.

5. A self-propelled hand-held chassis according to claim 4, characterized in that, The left and right handrails are fixedly connected by a handrail connecting rod.

6. A self-propelled hand-held chassis according to claim 5, characterized in that, A header mounting bracket is installed on the front side of the frame, a header drive sprocket is also installed on the power output shaft, and the operation control component also includes a header control handle.

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