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JP-2026075100-A - Work vehicles

JP2026075100AJP 2026075100 AJP2026075100 AJP 2026075100AJP-2026075100-A

Abstract

[Problem] To provide a work vehicle that can accurately calculate the amount of materials consumed. [Solution] A work vehicle according to one embodiment comprises a vehicle body, a work device mounted on the vehicle body and driven by power, a remaining amount detection means for detecting the length of seedling mat remaining in the seedling tank of the work device, a movement count detection means for detecting the number of movements in correspondence with the movement operation of the seedling tank, a storage means for storing a reference length in the transport direction of the seedling mat, and a control device for calculating the compression ratio of the seedling mat based on the length of the seedling mat detected by the remaining amount detection means, the number of movements detected by the movement count detection means, and the reference length stored in the storage means. [Selection Diagram] Figure 1

Inventors

  • 今泉 大介
  • 山田 佳菜子
  • 飛田 秀平
  • 堀田 直岐

Assignees

  • 井関農機株式会社

Dates

Publication Date
20260507
Application Date
20260202

Claims (7)

  1. The vehicle body and A work device mounted on the vehicle body and driven by power, A remaining quantity detection means for detecting the length of the seedling mat remaining in the seedling tank of the work apparatus, Movement count detection means for detecting the number of movements in response to the movement operation of the seedling tank, A storage means for storing the reference length in the direction of transport of the seedling mat, The length of the seedling mat as determined by the remaining amount detection means, The number of moves detected by the aforementioned move count detection means, A work vehicle comprising a control device that calculates the compression ratio of a seedling mat based on a reference length stored in the storage means.
  2. The aforementioned movement count detection means is This seedling tank end detection switch operates when the seedling tank moves to the end, The control device, based on the number of times the seedling tank end detection switch has been activated, The work vehicle according to claim 1, characterized in that it calculates the number of movements.
  3. The control device, if the difference between the compression ratio calculated this time and the compression ratio calculated most recently is greater than or equal to a predetermined value, does not adopt the compression ratio calculated this time, as described in claim 1.
  4. The control device, when the difference between the previous compression ratio and the compression ratio before that is greater than or equal to a predetermined value, and the difference between the compression ratio calculated this time and the previous compression ratio is less than the predetermined value, adopts the previous compression ratio, as described in claim 3.
  5. The control device resets the compression ratio when a predetermined operation is performed, as described in claim 1 of the work vehicle.
  6. The control device is characterized by correcting the remaining amount of seedlings based on the calculated compression ratio, as described in any one of claims 1 to 5.
  7. The control device is characterized by calculating the amount of seedlings used per unit distance based on the calculated compression ratio, the amount of seedlings picked, and the amount of seedlings fed, as described in any one of claims 1 to 6.

Description

This invention relates to a work vehicle. Conventionally, there are known work vehicles that calculate the seedling consumption rate based on the number of seedling mats detected by sensors placed on the seedling tank and the distance traveled by the vehicle (see, for example, Patent Document 1). Japanese Patent Publication No. 2013-5748 Figure 1 is a side view showing a work vehicle.Figure 2 is a plan view showing the work vehicle.Figure 3 is a block diagram showing the control system, centered around the control device of the seedling transplanter.Figure 4 is a flowchart illustrating the process for calculating the amount of seedlings to be used.Figure 5 shows an example of a monitor displaying the remaining amount of seedlings.Figure 6A shows the state in which the distance measuring sensor installed in the seedling tank is located below the surface on which the seedlings are placed.Figure 6B shows the distance measuring sensor installed on the seedling tank in a state where it is protruding above the seedling mounting surface.Figure 7 is an explanatory diagram illustrating the concept related to the calculation of the compression ratio.Figure 8 is an explanatory diagram illustrating the concept related to the calculation of the compression ratio. First, an overview of the work vehicle 1 according to the embodiment will be described with reference to Figures 1 and 2. Figure 1 is a side view of the work vehicle 1. Figure 2 is a top view of the work vehicle 1. In the following explanation, the forward and backward directions refer to the direction of travel of the work vehicle 1 when moving straight ahead. The front side of the direction of travel is defined as "forward," and the rear side as "rear." The direction of travel of the work vehicle 1 is the direction from the driver's seat 41 towards the steering wheel 35 (steering device) when moving straight ahead (see Figures 1 and 2). The left-right direction is the direction perpendicular to the front-back direction, and is defined with respect to the "forward" direction. That is, with the operator (also called the crew member) seated in the cockpit 41 and facing forward, the left side is "left" and the right side is "right." The vertical direction refers to the vertical direction. The front-back, left-right, and up-down directions are mutually orthogonal. These directions are defined for explanatory purposes only, and the present invention is not limited by these directions. In this embodiment, the work vehicle 1 is described as a ride-on seedling transplanter 1 equipped with a seedling planting unit 4 as a work device, which receives seedlings in the field. As shown in Figures 1 and 2, the seedling transplanter 1 is equipped with a liftable seedling planting unit 4 on the rear side of the vehicle body 2 via a lifting link mechanism 3 for planting seedlings in the field. The main body of the fertilizer application device 5 is positioned on the upper rear side of the vehicle body 2. Note that if the work vehicle 1 is not a seedling transplanter 1, it may be equipped with a seeding device or other work equipment for supplying seeds. The vehicle body 2 is a four-wheel drive vehicle equipped with left and right front wheels 10 and rear wheels 11, which are both wheels and drive wheels. On the front side of the main frame 15, which constitutes the vehicle body structure of the vehicle body 2, are a transmission case 13 that transmits driving force to the seedling planting unit 4 and other components, and a hydraulic continuously variable transmission 14 that outputs the driving force supplied from the engine 30, i.e., the rotation generated by the engine 30, to the transmission case 13. The continuously variable transmission (CVT) 14 is a hydrostatic CVT, also known as an HST (Hydro Static Transmission). The following explanation will describe the case where the CVT is an HST 14. The transmission case 13 is equipped with a sub-transmission mechanism 16 that switches the driving mode of the vehicle body 2, such as when driving on the road in high-speed mode or when planting seedlings in low-speed mode. Front wheel final drive cases 10a are provided on the left and right sides of the transmission case 13. The front wheels 10 are mounted on left and right front axles 10b that protrude outward from the front wheel support sections of the left and right front wheel final drive cases 10a, which are capable of changing the steering direction. Furthermore, rear wheel gear cases 11a are attached to both the left and right sides of a rear frame 22 (see Figure 2), which is provided laterally on the rear side of the main frame 15. The rear wheels 11 are then attached to the left and right rear axles 11b, which protrude outward from the rear wheel gear cases 11a. Furthermore, left and right link support frames 23, which support the lifting link mechanism 3, are projected upward from the upper part of the rear frame 22. A pair of left and right lower link arms 24 are provid