Weight change system

Abstract

To provide a weight change system capable of making a driver operate carefully depending on the tire wear of an industrial vehicle.SOLUTION: A weight change system S comprises a weight change unit, a wear determination unit, a weight determination unit, and a change commanding unit. The weight change unit changes at least one weight of an accelerator pedal, a brake pedal, and an accelerator lever of an industrial vehicle 1. The wear determination unit determines the wear degree of the tire 10a of the industrial vehicle 1. The weight determination unit determines at least one weight of the accelerator pedal, the brake pedal, and the accelerator lever depending on the wear degree of the tire 10a. The change commanding unit controls the weight change unit according to the determination by the weight determination unit and changes at least one weight of the accelerator pedal, the brake pedal, and the accelerator lever.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a weight changing system for changing the weight of pedals and levers of an industrial vehicle. [Background technology]

[0002] Tires mounted on a vehicle wear down as the vehicle travels. If tire wear is left unchecked, the tire's grip strength will decrease, its ability to contact the road surface will decrease, braking distance will increase, and stability when turning will decrease. Therefore, it is extremely important to properly detect tire wear. For this reason, devices for detecting tire wear have been developed, as disclosed in Patent Document 1, for example.

[0003] Forklifts require more frequent acceleration, braking, and turning than general vehicles. Furthermore, because forklifts transport heavy loads, they place a heavier load on their tires than general vehicles. Consequently, forklift tires are more susceptible to wear than tires on general vehicles. Therefore, tire wear detection devices have been developed and used for forklifts, as described in Patent Documents 2 and 3. The industrial vehicle (forklift) disclosed in Patent Document 2 is configured to accurately detect when tires need to be replaced while the vehicle is stopped and to reliably notify the operator of the need. Furthermore, the tire wear detection device disclosed in Patent Document 3 accurately detects tire wear by taking into account tire wear during so-called stationary steering. Furthermore, an industrial vehicle (forklift) equipped with the tire wear detection device disclosed in Patent Document 3 reduces its driving acceleration relative to accelerator operation as the degree of tire wear increases. This prevents the industrial vehicle from slipping due to worn tires.

[0004] In order to prevent slippage due to worn tires, the driver needs to operate the vehicle carefully. However, simply informing the driver that it is time to change the tires, as disclosed in Patent Document 2, is not enough to ensure careful operation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-113835 [Patent Document 2] Japanese Patent Application Publication No. 2023-168845 [Patent Document 3] Japanese Patent Application Laid-Open No. 2005-349966 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide a system that can make the driver of an industrial vehicle operate the vehicle more carefully depending on the wear of the tires. [Means for solving the problem]

[0007] In order to solve the above problem, the weight change system according to the present invention comprises: A weight change system for use in an industrial vehicle, comprising: a weight changing unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of the industrial vehicle; a wear determination unit that determines the degree of wear of tires of an industrial vehicle; a weight determination unit that determines the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever in accordance with the degree of tire wear; and a change command unit that controls the weight change unit in accordance with the determination by the weight determination unit to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever.

[0008] In order to solve the above problem, the weight change system according to the present invention comprises: A weight change system for use in an industrial vehicle, comprising: a weight changing unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of the industrial vehicle; a wear sensor for detecting the degree of wear of tires of an industrial vehicle; a weight determination unit that determines the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever in accordance with the degree of tire wear; and a change command unit that controls the weight change unit in accordance with the determination by the weight determination unit to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever.

[0009] The weight change system preferably comprises: The industrial vehicle further includes an operating time measurement unit that measures the operating time of the industrial vehicle after the tire has been replaced, The wear determining unit determines the degree of tire wear based on the operating time of the industrial vehicle after the tire has been replaced.

[0010] The weight change system preferably comprises: An operating time measurement unit that measures the operating time of the industrial vehicle after a statutory inspection is performed on the industrial vehicle, The weight determination unit further determines not to increase the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever until a predetermined operating time has elapsed after the legal inspection is performed.

[0011] The weight change system preferably comprises: Further provided is a camera that photographs the surface of the tire to generate a tire image; The wear determination unit has a first trained model, The first trained model has been trained in advance to output the degree of tire wear when a tire image is input. The wear determination unit inputs the tire image into the first trained model and outputs the degree of wear.

[0012] The weight change system preferably comprises: Further provided is a camera that photographs the surface of the tire to generate a tire image; The wear determination unit has a second trained model, The second trained model has been trained in advance to output the degree of uneven wear when a tire image is input. The wear determination unit inputs the tire image into a second trained model and outputs the degree of uneven wear; The weight determination unit determines the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever, further based on the output degree of uneven wear.

[0013] In order to solve the above problem, an industrial vehicle according to the present invention includes any one of the weight change systems described above.

[0014] In order to solve the above problem, a weight change program according to the present invention includes: A program used in a weight change system including a weight change unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of an industrial vehicle, and a computer, On the computer, Determining the degree of wear of tires of an industrial vehicle; determining the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever according to the degree of tire wear; The weight changing unit is controlled in accordance with the determined weight to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever. [Effects of the Invention]

[0015] The weight change system according to the present invention can allow the driver to operate the industrial vehicle carefully depending on the wear of the tires. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram illustrating a weight change system according to a first embodiment of the present invention; [Figure 2] FIG. 2 is a side view of the forklift shown in FIG. 1. [Figure 3] FIG. 1 is a block diagram of a weight change system according to a first embodiment. [Figure 4] FIG. 3 is a flowchart showing the operation of the weight change system according to the first embodiment. [Figure 5] FIG. 10 is a block diagram of a weight change system according to a second embodiment. [Figure 6] FIG. 10 is a flowchart showing the operation of the weight change system according to the second embodiment. [Figure 7] FIG. 10 is a block diagram of a weight change system according to a third embodiment. [Figure 8] This is a diagram showing tire wear, where A shows a new tire, B shows tire wear without uneven wear, C shows wear on one side, and D shows wear on both shoulders. [Figure 9] FIG. 11 is a flowchart showing the operation of the weight change system according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, various embodiments of the weight change system according to the present invention will be described with reference to the accompanying drawings. In each embodiment, the industrial vehicle is a counter-load forklift, but this is merely an example, and the industrial vehicle according to the present invention is not limited to this forklift. For example, the industrial vehicle may be a reach forklift, a towing vehicle, or a straddle carrier.

[0018] First Embodiment 1 is a diagram illustrating a weight change system S according to the first embodiment. The weight change system S is provided in a forklift 1, and is configured to make the accelerator pedal and brake pedal heavier according to the degree of wear when the tires 10a of the forklift 1 wear, thereby urging the driver H to operate the forklift 1 more carefully.

[0019] <Forklift configuration> 2 is a side view of a forklift 1 equipped with a weight change system S. The forklift 1 is equipped with a plurality of wheels 10, a vehicle body 11, a driver's seat 12, a head guard 13, pedals 14, a lever 15, left and right masts 16, left and right forks 17, a wear sensor 18 (see FIG. 3), a weight change unit 21 (see FIG. 3), and a control unit 30 (see FIG. 3). The system equipped with the wear sensor 18, the weight change unit 21, and the control unit 30 is the weight change system S according to this embodiment.

[0020] A plurality of wheels 10 have tires 10a and are provided on all four sides of the vehicle body 11. The front wheels 10 are configured as drive wheels, and the rear wheels 10 are configured as driven wheels. Generally, drive wheels are considered to wear more easily than driven wheels.

[0021] The driver's seat 12 is provided on the vehicle body 11, and the head guard 13 is provided above the driver's seat 12.

[0022] The pedals 14 include an accelerator pedal, a brake pedal, and an inching pedal, and are provided below the driver's seat 12. Hereinafter, the accelerator pedal and the brake pedal will be collectively referred to simply as "pedals 14."

[0023] The lever 15 has a lift lever and a tilt lever, and is provided in front of the driver's seat 12.

[0024] The left and right forks 17 are configured to be able to be raised and lowered via the left and right masts 16, and the operator H operates a lift lever to raise and lower the forks 17 to perform cargo handling work.

[0025] The wear sensor 18 detects the degree of wear of at least one tire 10 a. The wear sensor 18 is preferably configured to detect the degree of wear of all tires 10 a, in which case the wear sensor 18 is disposed on each of all tires 10 a. The configuration of the wear sensor 18 is not particularly limited.

[0026] The wear sensor 18 may be configured, for example, by a sensor that measures the groove depth of the tire 10a. In this case, the wear sensor 18 is configured to measure the groove depth of the tire 10a using ultrasound, a laser, or the like.

[0027] Alternatively, the wear sensor 18 may be configured as an acceleration sensor. As the tire 10a wears, the diameter of the tire 10a changes, which affects the rotational speed (acceleration) of the wheel 10. Therefore, the wear sensor 18 detects changes in the rotational speed (acceleration) of the wheel 10 to estimate the degree of wear of the tire 10a.

[0028] The weight change unit 21 changes the weight of the pedal 14 when operated based on a command from a change command unit 307 (see FIG. 3), which will be described later. The weight change unit 21 is configured by, for example, a device that can adjust the weight by hydraulic pressure or a device that can adjust the weight by a spring.

[0029] Furthermore, for example, the weight change unit 21 may be an assist device that assists the force to press the pedal 14. In this case, the weight change unit 21 may adjust the assist force based on a command from the change command unit 307, and may substantially change the weight of the pedal 14 when the driver H presses it.

[0030] Furthermore, the weight change unit 21 may be configured to change the magnitude of the braking force responsive to the amount of depression force on the brake pedal, for example, based on a command from the change command unit 307. In this way, the weight change unit 21 effectively changes the weight of the brake pedal.

[0031] The control unit 30 is configured by a computer arranged inside the vehicle body 11, and has an arithmetic unit, a storage device, and a memory. The storage device stores a weight change program that causes the computer to function as a weight determination unit 305 and a change command unit 307, which will be described later.

[0032] <Functional configuration of the first embodiment> Next, a functional configuration of the weight change system S according to the first embodiment will be described. As shown in FIG. 3, the control unit 30 includes a storage unit 301, a weight determination unit 305, and a change command unit 307.

[0033] The storage unit 301 stores the degree of wear and the weight of the pedal 14 corresponding to the degree of wear in association with each other.

[0034] The weight determination unit 305 determines to increase the weight of the pedal 14 in accordance with the degree of wear of the tire 10a detected by the wear sensor 18. More specifically, the weight determination unit 305 determines to increase the weight of the pedal 14 the higher the degree of wear. When the degrees of wear of all tires 10a have been detected, the weight determination unit 305 determines to increase the weight of the pedal 14 in accordance with the highest degree of wear (i.e., the most worn tire 10a).

[0035] The change command unit 307 controls the weight change unit 21 to change the weight of the pedal 14 in accordance with the determination by the weight determination unit 305. As a result, the weight change system S makes the pedal 14 heavier the higher the degree of wear of the tire 10a, making it more difficult to perform operations such as sudden starts and sudden braking, thereby allowing the driver H to operate the pedal 14 more carefully. Furthermore, when the degree of wear of the tire 10a is low and the grip of the tire 10a is high, the weight change system S does not increase the weight of the pedal 14 and the lever 15, allowing the pedal 14 and the lever 15 to be operated quickly.

[0036] <Flow of the weight change system according to the first embodiment> Next, the operation of the weight change system S according to the first embodiment will be explained again with reference to the flow chart of FIG.

[0037] (1) First, the weight change system S acquires the degree of wear of the tire 10a from time to time using the wear sensor 18 (see S1 in FIG. 4).

[0038] (2) Next, the weight change system S determines the weight of the pedal 14 according to the acquired degree of wear of the tire 10a (see S2 in FIG. 4).

[0039] (3) Next, the weight change system S increases the weight of the pedal 14 in accordance with the determined weight of the pedal 14 (see S3 in FIG. 4).

[0040] In this way, the weight change system S according to this embodiment measures the degree of wear of the tire 10a as needed to obtain the degree of wear of the tire 10a in real time, while increasing the weight of the pedal 14. In this way, the weight change system S allows the driver H to operate the pedal 14 more carefully in accordance with the decrease in grip force due to the degree of wear of the tire 10a.

[0041] Second Embodiment Next, a second embodiment of the weight change system S according to the present invention will be described with reference to Figures 2, 5, and 6. Like the first embodiment, the weight change system S according to this embodiment is configured to change the weight of the pedal 14. Hereinafter, the same components as those in the first embodiment will be assigned the same reference numerals, and detailed description thereof may be omitted.

[0042] 2 and 5, the forklift 1 according to this embodiment includes a plurality of wheels 10, a vehicle body 11, a driver's seat 12, a head guard 13, pedals 14, a lever 15, left and right masts 16, left and right forks 17, a weight change unit 21, and a control unit 30. A system including the weight change unit 21 and the control unit 30 is the weight change system S according to this embodiment. Unlike the first embodiment, the weight change system S according to this embodiment does not include a wear sensor 18, but other configurations are the same as those of the first embodiment.

[0043] The weight change unit 21 changes the weight of the pedal 14 when operated based on the command from the change command unit 307 in the same manner as in the first embodiment.

[0044] The storage device of the control unit 30 stores a weight change program that causes the computer to function as an operating time measurement unit 302, a wear determination unit 303, a weight determination unit 305, and a change command unit 307, which will be described later.

[0045] <Functional configuration of the second embodiment> Next, a functional configuration of the weight change system S according to the second embodiment will be described. As shown in Fig. 5, the control unit 30 has a storage unit 301, an operating time measurement unit 302, a wear determination unit 303, a weight determination unit 305, and a change command unit 307.

[0046] As in the first embodiment, the storage unit 301 stores the degree of wear and the weight of the pedal 14 corresponding to the degree of wear in association with each other. The storage unit 301 also stores the date and time when each tire 10a was replaced and the date and time when a statutory inspection was performed.

[0047] The operating time measurement unit 302 measures the operating time of the forklift 1 after the tire 10a has been replaced. In this embodiment, the operating time measurement unit 302 measures the operating time of the forklift 1 after the tire 10a has been replaced for each tire 10a. The operating time measurement unit 302 also measures the operating time of the forklift 1 after a statutory inspection has been performed.

[0048] The wear determination unit 303 determines the degree of wear of each tire 10a based on the operating time of the forklift 1 after the tire 10a was replaced. That is, the wear determination unit 303 determines the degree of wear of each tire 10a based on the correlation between the operating time of the forklift 1 and the degree of wear of the tire 10a.

[0049] The weight determination unit 305 determines the weight of the pedal 14 to be heavier depending on the degree of wear determined by the wear determination unit 303. Therefore, similar to the first embodiment, the weight determination unit 305 determines the weight of the pedal 14 to be heavier the higher the degree of wear. Furthermore, the weight determination unit 305 determines the weight of the pedal 14 to be heavier according to the highest degree of wear among the degrees of wear of all the tires 10a.

[0050] The weight determination unit 305 further determines not to increase the weight of the pedal 14 until a predetermined operating time has elapsed since the mandatory inspection. That is, even if the wear determination unit 303 determines that the tire 10a is worn, the weight determination unit 305 determines that the tire 10a has sufficient gripping force until the predetermined operating time has elapsed since the mandatory inspection, and determines to reduce the weight of the pedal 14. The predetermined operating time may be, for example, one week to one month's worth of operating time.

[0051] As in the first embodiment, the change command unit 307 controls the weight change unit 21 to change the weight of the pedal 14 to the weight determined by the weight determination unit 305. As a result, as in the first embodiment, the weight change system S makes the pedal 14 heavier the higher the degree of wear of the tire 10a, allowing the driver H to operate the pedal more carefully. Moreover, the weight change system S does not increase the weight of the pedal 14 until a predetermined operating time has elapsed after the statutory inspection, allowing the driver H to operate the pedal quickly while the tire 10a has sufficient grip.

[0052] <Flow of the weight change system according to the second embodiment> Next, the operation of the weight change system S according to the second embodiment will be explained again with reference to the flow chart of FIG.

[0053] (1) First, the weight change system S measures the operating time of the forklift 1 after the tire 10a has been replaced, and also measures the operating time of the forklift 1 after the legal inspection has been performed (see S1 in FIG. 6).

[0054] (2) Next, the weight change system S determines the degree of wear of the tire 10a based on the operating time after the tire 10a is replaced (see S2 in FIG. 6).

[0055] (3) Next, the weight change system S determines the weight of the pedal 14 in accordance with the degree of wear determined by the wear determination unit 303 (see S3 in FIG. 6).

[0056] (4) Next, if a predetermined operating time has elapsed since the statutory inspection was performed (Yes in S4 of FIG. 6), the weight change system S changes the weight of the pedal 14 to the weight determined by the weight determination unit 305 (S5 of FIG. 6). On the other hand, if the predetermined operating time has not elapsed since the statutory inspection was performed (No in S4 of FIG. 6), the weight change system S does not increase the weight of the pedal 14. As a result, the weight change system S allows the driver H to operate the pedal 14 carefully depending on the decrease in grip force due to the wear of the tire 10a, and also allows the driver H to operate the pedal 14 quickly until the predetermined operating time has elapsed since the statutory inspection was performed.

[0057] Third Embodiment Next, a third embodiment of the weight change system S according to the present invention will be described with reference to Figures 2 and 7 to 9. Like the above-described embodiments, the weight change system S according to this embodiment is also configured to change the weight of the pedal 14. Hereinafter, the same components as those in the above-described embodiments will be assigned the same reference numerals, and detailed description thereof may be omitted.

[0058] 2 and 7, the forklift 1 according to this embodiment includes a plurality of wheels 10, a vehicle body 11, a driver's seat 12, a head guard 13, pedals 14, a lever 15, left and right masts 16, left and right forks 17, a camera 19, a weight change unit 21, and a control unit 30. A system including the camera 19, the weight change unit 21, and the control unit 30 constitutes a weight change system S according to this embodiment. Unlike the first embodiment, the weight change system S according to this embodiment includes a camera 19 instead of a wear sensor 18, but the other configurations are the same as those of the first embodiment.

[0059] There are multiple cameras 19, each disposed near a tire 10a. The cameras 19 are configured to capture images of the surface of the tire 10a to generate a tire image. However, this is merely an example, and the present invention may be implemented with one or more cameras 19 configured to generate a tire image of at least one tire 10a.

[0060] The weight change unit 21 changes the weight of the pedal 14 when operated based on the command from the change command unit 307 in the same manner as in the above embodiment.

[0061] The storage device of the control unit 30 stores a weight change program that causes the computer to function as a wear determination unit 303, a weight determination unit 305, and a change command unit 307, which will be described later.

[0062] <Functional configuration of the third embodiment> Next, a functional configuration of the weight change system S according to the third embodiment will be described. As shown in Fig. 7, the control unit 30 has a storage unit 301, a wear determination unit 303, a weight determination unit 305, and a change command unit 307.

[0063] The storage unit 301 stores a weight coefficient used when the weight determination unit 305 calculates the weight of the pedal 14 by multiplying the degree of wear of the tire 10a and the degree of uneven wear of the tire 10a.

[0064] The wear determination unit 303 has first and second trained models. The first trained model is trained in advance using a large number of tire images and the wear levels corresponding to each tire image as training data. As a result, when a tire image is input, the first trained model outputs the wear level of the tire 10a. The wear determination unit 303 inputs the tire image to the first trained model and causes it to output the wear level.

[0065] The second trained model has been trained in advance using a large number of tire images and the degree of uneven wear corresponding to each tire image as training data. As a result, when a tire image is input, the second trained model outputs the degree of uneven wear of the tire 10a. Figure 8 shows the wear on the tire 10a, where A shows a new tire 10a, B shows wear on the tire 10a without uneven wear, C shows wear on one side, and D shows wear on both shoulders. As shown in Figures 8C and 8D, the unevenly worn tire 10a causes an uneven contact patch with the road surface, resulting in reduced driving performance, reduced braking force, and an increased risk of slipping. Therefore, the driver H is required to operate the vehicle more carefully depending on the degree of uneven wear of the tire 10a. For example, the second trained model may be trained so that the degree of uneven wear is higher for wear on one side than for wear on both shoulders. The wear determination unit 303 inputs tire images into the second trained model and outputs the degree of uneven wear.

[0066] The weight determination unit 305 determines to increase the weight of the pedal 14 based on the output degree of wear and degree of uneven wear. More specifically, the weight determination unit 305 calculates the weight of the pedal 14 that should be increased by multiplying the degree of wear of the tire 10a, the degree of uneven wear of the tire 10a, and the weight coefficient. This allows the weight determination unit 305 to determine the weight of the pedal 14 taking into account not only the degree of wear of the tire 10a but also the degree of uneven wear of the tire 10a.

[0067] As in the above embodiment, the change command unit 307 controls the weight change unit 21 to change the weight of the pedal 14 to the weight determined by the weight determination unit 305. As a result, as in the above embodiment, the weight change system S makes the pedal 14 heavier the higher the degree of wear of the tire 10a, allowing the driver H to operate the forklift 1 more carefully. Moreover, since the weight change system S further increases the weight of the pedal 14 depending on the degree of uneven wear, the driver H can operate the forklift 1 even more carefully when operating a forklift 1 equipped with a tire 10a that has uneven wear.

[0068] <Flow of the weight change system according to the third embodiment> Next, the operation of the weight change system S according to the third embodiment will be explained again with reference to the flow chart of FIG.

[0069] (1) First, the weight change system S photographs the surface of the tire 10a with the camera 19 and generates a tire image (see S1 in FIG. 9).

[0070] (2) Next, the weight change system S determines the degree of wear and the degree of uneven wear of the tire 10a using the first and second trained models (see S2 in FIG. 9).

[0071] (3) Next, the weight change system S determines to increase the weight of the pedal 14 in accordance with the determined degree of wear and uneven wear (see S3 in FIG. 9).

[0072] (4) Next, the weight change system S changes the weight of the pedal 14 to the determined weight (S4 in FIG. 9). In this way, the weight change system S changes the weight of the pedal 14 taking into account the degree of wear and uneven wear of the tire 10a. As a result, the weight change system S allows the driver H to operate the pedal 14 more carefully depending on the degree of wear and uneven wear of the tire 10a.

[0073] Although the weight change system according to the present invention has been described above in relation to various embodiments thereof, the present invention is not limited to the above-described embodiments. The weight change system according to the present invention may be implemented, for example, by appropriately combining the above-described embodiments, or by implementing each of the following modifications or by combining the modifications.

[0074] <Modification> The industrial vehicle may be, for example, a reach forklift. In this case, the weight change unit 21 is configured to change the weight of the accelerator lever. In this case, the weight change unit 21 may be configured, for example, by a device that can adjust the weight of the accelerator lever using hydraulic pressure or a device that can adjust the weight of the accelerator lever using a spring. Furthermore, the weight change unit 21 may be, for example, an assist device that assists in operating the accelerator lever according to its weight. In this case, the weight change unit 21 adjusts the assist force based on a command from the change command unit 307, thereby essentially changing the weight of the accelerator lever when operated by the driver H. In this case, the weight determination unit 305 is configured to determine the weight of the accelerator lever instead of the pedal 14, and the change command unit 307 is configured to change the weight of the accelerator lever instead of the pedal 14.

[0075] Any of the components of the control unit 30 may be configured, for example, by a server computer installed on the cloud. In this case, the weight change system S changes the weight of the pedal 14 and the accelerator lever by communicating with this server computer. [Explanation of symbols]

[0076] S Weight Change System H Driver 1. Forklift (industrial vehicle) 10 wheels 10a tires 11 Body 12 Driver's seat 13 Head guard 14 pedals 15 Lever 16 Mast 17. Fork 18 Wear Sensor 19 Camera 21 Weight change section 30 Control Unit 301 Storage section 302 Operating time measurement unit 303 Wear determination unit 305 Weight determination unit 307 Change Order Department

Claims

1. A weight change system for use in an industrial vehicle, comprising: a weight changing unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of the industrial vehicle; a wear determination unit for determining a degree of wear of tires of the industrial vehicle; a weight determination unit that determines the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever in accordance with the degree of wear of the tire; a change command unit that controls the weight change unit in accordance with the determination of the weight determination unit to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever.

2. A weight change system for use in an industrial vehicle, comprising: a weight changing unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of the industrial vehicle; a wear sensor for detecting the degree of wear of the tires of the industrial vehicle; a weight determination unit that determines the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever in accordance with the degree of wear of the tire; a change command unit that controls the weight change unit in accordance with the determination of the weight determination unit to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever.

3. an operating time measurement unit that measures an operating time of the industrial vehicle after the tire has been replaced, The weight change system according to claim 1 , wherein the wear determination unit determines the degree of wear of the tire based on the operating time of the industrial vehicle after the tire has been replaced.

4. an operating time measurement unit that measures the operating time of the industrial vehicle after a statutory inspection is performed on the industrial vehicle; 3. The weight change system according to claim 1, wherein the weight determination unit further determines not to increase the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever until a predetermined operating time has elapsed after the mandatory inspection.

5. Further, a camera is provided to capture an image of the tire surface and generate a tire image. The wear determination unit has a first trained model, the first trained model is machine-learned in advance to output the wear level of the tire when the tire image is input; The weight change system according to claim 1 , wherein the wear determination unit inputs the tire image into the first trained model to output the degree of wear.

6. Further, a camera is provided to capture an image of the tire surface and generate a tire image. The wear determination unit has a second trained model, the second trained model is trained in advance by machine learning to output an uneven wear degree when the tire image is input; the wear determination unit inputs the tire image into the second trained model and outputs the degree of uneven wear; 2. The weight change system according to claim 1, wherein the weight determination unit determines the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever based on the outputted wear rate.

7. An industrial vehicle equipped with the weight change system according to any one of claims 1 to 3 and 5.

8. A program used in a weight change system including a weight change unit that changes the weight of at least one of an accelerator pedal, a brake pedal, and an accelerator lever of an industrial vehicle, and a computer, The computer, Determining the degree of wear of tires of the industrial vehicle; determining a weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever in accordance with the degree of wear of the tire; and controlling the weight change unit in accordance with the determined weight to change the weight of at least one of the accelerator pedal, the brake pedal, and the accelerator lever.

Images