JP2017193199A - Coupled car control device equipped with slide type coupling device and coupling information display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display detailed information concerning an axle load of a tractor.SOLUTION: A control device 14 for a coupled car equipped with a slide type connector having a coupler which is combined with a coupling part of a trailer when coupling the trailer to a tractor, and has a position adjustment mechanism which can change a position of the coupler along a straight direction of travel of the tractor and an axial load sensor for detecting an axial load. The control device has: an axial load determination part 18 which determines whether the axial load detected by the axial load sensor is equal to or less than a prescribed set value; an axial load calculation part 19 which calculates a differential value between the axial load detected by the axial load sensor and the prescribed set value; and a display control device 20 which displays information corresponding to the differential value calculated by the axial load calculation part 19.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a connected vehicle control device including a slide type connecting device and a connection information display method.

  The connected vehicle is a vehicle in which a trailer is connected to a tractor. In the articulated vehicle, a king pin as a trailer coupling portion is inserted (that is, coupled) to the coupler of the tractor, and the tractor and the trailer are coupled. At this time, there is a tractor including a slide-type connecting and pulling device that can change the position of the coupler on the tractor along the straight traveling direction (that is, the front-rear direction) of the tractor (see, for example, Patent Document 1). By using the slide type connecting and pulling device, the degree of freedom with respect to the restriction of the structure of the trailer that one tractor can pull can be increased. Therefore, it is possible to pull various types of trailers by connecting them to one tractor.

  In such a slide type connecting and pulling device, the position of the coupler is variously determined for each type of trailer. The driver of the tractor (or the driving assistant) needs to set the coupler position determined for each trailer model according to the trailer model. At this time, if the position of the coupler that does not match the trailer vehicle type is set by mistake, when the tractor turns, the front corner of the trailer hits the rear of the tractor cab or the tractor pitches. There is a possibility that inconveniences such as narrowing the allowable pitching range may occur.

  Therefore, the applicant of the present application has proposed a device for displaying information on whether or not the coupler is located at a position suitable for the vehicle type of the trailer when the trailer is connected to the tractor and the axle weight of the tractor is appropriate. (See Patent Document 2).

JP-A-5-162663 JP 2014-240254 A

  In the device of Patent Document 2 described above, it can be seen whether the axle load of the tractor is appropriate or inappropriate, but the driver cannot know how much the axle load has or exceeds. . Therefore, in the apparatus of Patent Document 2, it is not possible to present information that serves as a reference when the driver considers what measures should be taken in order to make the tractor axle load appropriate. It was.

  The present invention has been made under such a background, and is a control device and a connection information display method for a connected vehicle provided with a slide type connection device capable of displaying detailed information of a tractor's axle load. The purpose is to provide.

  The present invention includes a coupler that is coupled to a trailer coupling portion when coupling a trailer to a tractor, a position adjusting unit that can change the position of the coupler along a straight traveling direction of the tractor, and a shaft that detects the axial load In a control apparatus for a connected vehicle having a slide type coupling device, the axle weight determining means for determining whether or not the axle weight detected by the axle weight detecting means is equal to or less than a predetermined set value. And a calculating means for calculating a difference value between the axle weight detected by the axle weight detecting means and a predetermined set value, and a display means for displaying information corresponding to the difference value calculated by the calculating means. It is.

  In the above-described control device, the display means can display information corresponding to the difference value stepwise in the positive direction and the negative direction around a predetermined set value.

  Another aspect of the present invention includes a coupler that is coupled to a trailer coupling portion when coupling a trailer to a tractor, and includes a position adjusting means that can change the position of the coupler along the straight traveling direction of the tractor, In a connection information display method executed by a connected vehicle control device having a slide type connecting device, the shaft weight detected by the shaft weight detecting means is less than a predetermined set value. Corresponding to the axle load determination step for determining whether or not there exists, the calculation step for calculating the difference value between the axle load detected by the axle load detection means and the predetermined set value, and the difference value calculated by the calculation step And a display step for displaying information.

  In the connection information display method described above, the display step may include a step of displaying information corresponding to the difference value stepwise in the positive direction and the negative direction centering on the predetermined set value.

  According to the present invention, it is possible to display detailed information on the tractor axle load.

1 is an overall configuration diagram of a connecting vehicle according to an embodiment of the present invention. It is a whole block diagram of the tractor of FIG. It is a block block diagram of the control apparatus and display part of FIG. It is a flowchart which shows operation | movement of the control apparatus of FIG. It is a figure which shows the example of a display of the monitor part of FIG. It is a figure which shows the example of a display different from FIG. 5 of the monitor part of FIG.

(About the outline of the connected vehicle 1)
As shown in FIG. 1, a connecting vehicle 1 according to an embodiment of the present invention is configured by connecting a tractor 2 and a trailer 3. The tractor 2 has a coupler 4 into which a king pin (not shown) as a connecting portion of the trailer 3 is inserted when the trailer 3 is connected to the tractor 2. As shown in FIG. 2, the tractor 2 includes a control device 14 and a display unit 15 that displays output information of the control device 14.

(About coupler 4)
As shown in FIG. 2, the coupler 4 is placed on a position adjusting mechanism 5 whose position can be changed along a direction along the straight traveling direction of the tractor 2 (in the drawing, the left-right direction, hereinafter referred to as the front-rear direction). Installed. The coupler 4 is installed on the position adjustment mechanism 5 so as to move freely within a range of a predetermined angle at least in the pitching direction of the tractor 2. The coupler 4 and the position adjusting mechanism 5 constitute a slide type connecting and pulling device 6 as shown in the upper broken line frame in FIG. In addition, in order to explain the upper structure, the slide type connecting and pulling device 6 in the upper broken line frame in FIG. According to the slide type connecting and pulling device 6, the position of the coupler 4 can be changed, so that it is possible to deal with various types of trailers 3.

(About the slide type connecting and pulling device 6)
As shown in the top structural diagram in the broken-line frame at the top of FIG. 2, the slide-type connecting and pulling device 6 has a coupler 4 along which a coupler 4 is provided along a pair of rails 7 provided on a planar position adjusting mechanism 5. 2 is configured to be slidable within a predetermined range in the front-rear direction. The coupler 4 is inserted with a king pin as a connecting portion of the trailer 3 (not shown). The coupler 4 is provided with a mechanism for fixing the slide position. This is formed in a mechanism in which a pair of lock portions 8 provided on the coupler 4 side protrudes outward by a pneumatic cylinder 9 and is fitted to the unevenness of the rail 7 at an appropriate position in the front-rear direction.

  The pneumatic cylinder 9 is arranged on the back surface of the coupler 4 when viewed from the top structural diagram in the broken line frame at the top of FIG. Since this is in a position that cannot be seen from above, it is originally drawn with a broken line, but in FIG. 2, this is drawn with a solid line instead of a broken line for easy understanding. Air pressure is sent to the pneumatic cylinder 9 from an air tank (not shown) via an air valve (not shown). When air pressure is sent to the pneumatic cylinder 9, the lock portion 8 is disengaged from the rail 7, and the coupler 4 can slide along the rail 7. On the other hand, when the air pressure of the pneumatic cylinder 9 is lost, the lock portion 8 is engaged with the rail 7 by a spring force (not shown), and the coupler 4 is fixed on the rail 7. Note that the slide-type connecting and pulling device 6 is generally well known, and may have a structure other than that illustrated in FIG.

(About hose 12 and air valve 13)
The hose 12 is a pipe line for sending brake air pressure to the trailer 3 connected to the tractor 2. The hose 12 is provided with a sufficient length so as not to hinder the connection even if the mutual position of the tractor 2 and the trailer 3 changes. The brake air pressure is controlled by the air valve 13. A plurality of electric signal lines are connected between the tractor 2 and the trailer 3 in parallel with or around the hose 12. Various signals are transmitted to the electrical signal line in addition to signals for the tail lamp and direction indicator lamp circuits of the trailer 3 that have been conventionally used.

(About the axle load of the tractor 2)
As shown in FIG. 2, the tractor 2 has a front wheel f and a rear wheel r, each having an axle (not shown). The weight applied to the axle is referred to as axle weight, and the maximum value per axle is defined by law. The tractor 2 has a shaft weight sensor fa on the front wheel f and a shaft weight sensor ra on the rear wheel r. In the state where the trailer 3 is connected to the slide type connecting and pulling device 6, the distribution of the axial weight of the front wheel f and the axial weight of the rear wheel r can be adjusted by moving the position of the coupler 4 back and forth.

  For example, when the axle weight of the front wheel f is lighter than that of the rear wheel r, the difference between the axle weight of the front wheel f and the axle weight of the rear wheel r is reduced by moving the position of the coupler 4 forward. be able to. At this time, if the axle weight of the rear wheel r exceeds the maximum value stipulated by law, the axle weight of the rear wheel r may be reduced below the maximum value by moving the position of the coupler 4 forward. It becomes possible. Further, also from the viewpoint of the steering stability of the tractor 2, it is preferable that the difference between the axial weight of the front wheel f and the axial weight of the rear wheel r is small.

(Regarding the control device 14)
The control device 14 will be described with reference to FIG. As shown in FIG. 3, the control device 14 includes a vehicle type coupler position storage unit 16, a axle load setting value storage unit 17, an axle load determination unit 18, an axle load calculation unit 19, a display control unit 20, Have The vehicle type coupler position storage unit 16 stores information on an appropriate position of the coupler 4 in the vehicle type of the trailer 3. The axle load set value storage unit 17 stores a predetermined set value of the axle weight of the rear wheel r of the tractor 2. It is preferable that the predetermined set value of the axle load is, for example, a maximum axle load value determined by law or a lower limit value uniquely determined for each vehicle.

  The axle load determination unit 18 determines whether or not the axle load detected by the axle load sensor ra is equal to or less than a predetermined set value stored in the axle load setting value storage unit 17. The axle weight calculation unit 19 calculates a difference value between the axle weight detected by the axle weight sensor ra and a predetermined setting value stored in the axle weight setting value storage unit 17. The display control unit 20 controls various displays on the display unit 15 described later. For example, the display control unit 20 displays information corresponding to the difference value calculated by the axle load calculation unit 19 on the monitor unit 15a of the display unit 15. At this time, as shown in FIGS. 5 and 6, the display control unit 20 displays information corresponding to the difference values stepwise in the positive direction and the negative direction around a predetermined set value.

  The storage of the information in the vehicle type coupler position storage unit 16 and the axle load set value storage unit 17 described above may be performed before the tractor 2 is shipped by the manufacturer of the tractor 2 or after the tractor 2 is shipped. You may carry out by the user side which purchased the tractor 2. FIG.

(About display unit 15)
As shown in FIG. 3, the display unit 15 includes a monitor unit 15a on which image information is displayed, an alarm buzzer 15b, and an alarm lamp 15c. When the trailer 3 is connected to the tractor 2 under the control of the display control unit 20, the monitor unit 15 a displays “unknown trailer” and image information when the vehicle type information of the trailer 3 is not yet input. Alternatively, the monitor unit 15 a receives the vehicle type information when the trailer 3 is connected to the tractor 2 and the vehicle type information is not stored in the vehicle type coupler position storage unit 16 under the control of the display control unit 20. Display "trailer unknown" and image information.

  The monitor unit 15 a controls the display control unit 20 to control the axle load of the rear wheel r when the trailer 3 is connected to the tractor 2 and a predetermined set value stored in the axle load set value storage unit 17. The amount of divergence is displayed as image information. At this time, the display color is changed and displayed so that it can be seen at a glance how much the axial weight of the rear wheel r exceeds the predetermined set value. For example, if the axle weight of the rear wheel r exceeds the set value, red is displayed (see FIG. 5), and if there is a margin with respect to the predetermined set value, green is displayed (see FIG. 6). ). 5 and 6 will be described later.

  Furthermore, the monitor unit 15a controls whether the display control unit 20 controls the image information whether the forward radius, the skirt radius, the total connection length, and the pitching angle of the trailer 3 are within appropriate values. Display as. At this time, the display color can be changed and displayed so that it can be seen at a glance whether or not the forward radius, the skirt radius, the total connection length, and the pitching angle of the trailer 3 are appropriate values. For example, if any of the forward radius, the skirt radius, the connecting total length, and the pitching angle of the trailer 3 is not an appropriate value, red is displayed, and if it is an appropriate value, green is displayed. A specific example of displaying image information will be described later.

  The alarm buzzer 15b and the alarm lamp 15c are controlled by the display control unit 20 when the axle weight of the rear wheel r of the tractor 2 due to the connection of the trailer 3 to the tractor 2 exceeds a predetermined set value. When the trailer 3 is connected to the trailer 3 and the vehicle type information of the trailer 3 is not yet input, the trailer 3 is connected to the tractor 2 and the vehicle type information is input, but the vehicle type information is stored in the vehicle type coupler position storage. When it is not stored in the part 16, or when any of the forward radius, the skirt radius, the total length of connection, and the pitching angle of the trailer 3 is outside the range of proper values, the sound and blink.

(Regarding trailer 3 forward radius, hem radius, total connecting length, pitching angle)
Here, as an explanation of terms, the forward radius of the trailer 3 is defined as the distance from the center of the coupler 4 to the front corner of the trailer 3 when the side connected to the tractor 2 of the trailer 3 is defined as the front. The radius of the circle on the horizontal plane is called the forward radius. Further, when the opposite side in front of the trailer 3 is defined as the rear, the radius of the circle on the horizontal plane whose radius is the distance from the center of the coupler 4 to the rear corner of the trailer 3 is referred to as the skirt radius. Further, the distance from the front part of the tractor 2 to the rear part of the trailer 3 when the vehicle is in the straight traveling state is referred to as a total connecting length. Further, the limit angle at which the lower edge of the front part of the trailer 3 does not come into contact with the tractor 2 when the tractor 2 is pitched while the trailer 3 is kept in a horizontal state is called a pitching angle.

  When the coupler 4 is positioned at a position suitable for the vehicle type of the trailer 3, the forward radius, the skirt radius, the total connection length, and the pitching angle of the trailer 3 are within the appropriate values. On the other hand, if the coupler 4 is positioned at a position that is incompatible with the vehicle type of the trailer 3, any or all of the forward radius, the hem radius, the total connection length, and the pitching angle of the trailer 3 are outside the range of appropriate values.

(About operation | movement of the control apparatus 14)
The operation of the control device 14 will be described with reference to the flowchart of FIG. The START condition in the flowchart of FIG. 4 is a condition that the trailer 3 has been connected to the tractor 2. Note that the flow from START to END in FIG. 4 is one cycle, and when the flow proceeds to END, if the START condition is satisfied, the flow is executed again.

  In step S1, when the vehicle type information is input to the control device 14 and the control device 14 acquires the position information of the coupler 4, the flow proceeds to step S2. The vehicle type information is input by a keyboard such as a driver connected to the control device 14 by an operator such as a driver. The position information of the coupler 4 is transmitted to the control device 14 by a sensor (not shown) attached to the position adjustment mechanism 5, for example.

  In step S2, the control device 14 determines whether or not the axle load applied to the rear wheel r of the tractor 2 due to the connection of the trailer 3 to the tractor 2 is equal to or less than a predetermined set value. If it is determined in step S2 that the axle load is equal to or less than the predetermined set value, the flow proceeds to step S3. On the other hand, if it is determined in step S2 that the axle load exceeds a predetermined set value, the flow proceeds to step S6.

  In step S3, the control device 14 causes the monitor unit 15a of the display unit 15 to display green as the determination 1 as shown in FIG. 6, and the degree of deviation from the predetermined set value of the axle load (margin amount). Is displayed numerically. In the example of FIG. 6, a black circle is displayed in the numerical value “−100”, and it can be seen that there is a margin of 100 kg (kilogram) with respect to the set value. In step S3, when the axle load margin is displayed, the flow proceeds to step S4. Note that the above-described determination 1 is a determination related to the axial weight of the rear wheel r, and a determination related to a forward radius, a skirt radius, a total connection length, and a pitching angle of the trailer 3 described later is determined as a determination 2.

  In step S <b> 4, the control device 14 determines whether or not all items of the forward radius, the skirt radius, the total connection length, and the pitching angle of the trailer 3 are within a range of appropriate values. If it is determined in step S4 that all the above items are within the range of appropriate values, the flow proceeds to step S5. At this time, the monitor unit 15a displays green in the determination 2 shown in FIG. 3, and further confirms that the forward radius, the hem radius, the total connection length, and the pitching angle of the trailer 3 are appropriate values. “OK” is displayed. On the other hand, if it is determined in step S4 that any of the above is outside the range of appropriate values, the flow proceeds to step S9.

  In step S5, the control device 14 gives a control instruction to an engine ECU (Electric Control Unit) and a brake ECU (not shown) as normal running enable control instructions so that the vehicle can run normally, and a flow for one cycle. End (END).

  In step S6, the control device 14 causes the monitor unit 15a of the display unit 15 to display red as determination 1 as shown in FIG. 5 and to numerically indicate the degree of deviation (over amount) from the set value of the axle load. To display. In the example of FIG. 5, a black circle is displayed in the numerical value “+50”, and it can be seen that there is an overload of 50 kg with respect to the set value. When the overload amount of the axle load is displayed in step S6, the flow proceeds to step S7.

  In step S <b> 7, the control device 14 locks the wheels of the trailer 3 as an instruction that disables traveling. Specifically, the control device 14 instructs the brake ECU of the tractor 2 to use the brakes of the wheels of the trailer 3. When receiving this instruction, the brake ECU supplies air pressure in an air tank (not shown) on the tractor 2 side to a brake actuator (not shown) of the trailer 3 via the hose 12. When the process is completed in step S7, the flow proceeds to step S8.

  In step S8, the control device 14 sounds the alarm buzzer 15b and lights the alarm lamp 15c, and the flow ends the process for one cycle (END).

  In step S <b> 9, the control device 14 instructs the brake ECU to lock the wheels of the trailer 3 as a travel impossible control instruction. When the process is completed in step S9, the flow proceeds to step S10.

  In step S10, the control device 14 sounds the alarm buzzer 15b to blink the alarm lamp 15c and displays image information on the monitor unit 15a. At this time, as shown in FIG. 3, the monitor unit 15 a displays red in the determination 2, and further, for each of the forward radius, the skirt radius, the total connection length, and the pitching angle of the trailer 3, appropriate values are displayed. Items that are out of range are displayed as “NG”. In addition, as shown in FIG. 3, the monitor unit 15 a displays “trailer unknown” and image information when the input vehicle type information is not stored in the vehicle type coupler position storage unit 16. When the process is completed in step S10, the flow proceeds to step S11.

  In step S11, the control device 14 determines whether or not an unillustrated emergency movement mode switch is in an ON state. If it is determined in step S11 that the emergency movement mode switch is in the ON state, the flow proceeds to step S12. On the other hand, if it is determined in step S11 that the emergency movement mode switch is in the OFF state, the flow ends the process for one cycle (END).

  In step S <b> 12, the control device 14 issues a travel enable control instruction in which an upper limit is set for the engine rotation speed to the engine ECU as a vehicle speed limited travel enable control instruction. When the process is completed in step S12, the flow proceeds to step S13.

  In step S13, the control device 14 instructs the brake ECU to unlock the wheels of the trailer 3 as a travelable control instruction. When the process is completed in step S11, the flow for one cycle is ended (END).

  Thereby, when the axial weight of the rear wheel r of the tractor 2 exceeds the set value, it is possible to prevent the connected vehicle 1 from being erroneously driven by locking the wheels of the trailer 3. On the other hand, if the axial weight of the rear wheel r of the tractor 2 is equal to or less than the set value, the connected vehicle 1 can travel while the vehicle speed is limited even if there is a problem in the positional relationship between the tractor 2 and the trailer 3. According to this, the position adjustment of the coupler 4 can be performed after moving the connecting vehicle 1 to an appropriate place.

  In addition, since it is possible to display whether or not the value is appropriate for each item, for example, when the forward radius and the pitching angle are NG, but the total connection length is OK, there is room to further retract the coupler 4. I understand that. Conversely, when the forward radius and the pitching angle are OK, it can be seen that there is room to further advance the coupler 4 when the total connection length is NG. In this way, the position of the coupler 4 can be set to an appropriate position for each vehicle type of the trailer 3.

  When it is determined “No” in step S <b> 2 of the above-described flow, an operator such as a driver executes readjustment of the position adjustment mechanism 5. For example, when the axial weight exceeds 50 kg as in the display example of the monitor unit 15a shown in FIG. 5, the position of the coupler 4 is moved in front of the tractor 2 (that is, in the cab direction). Thereby, the axial weight biased to the rear wheel r of the tractor 2 is also distributed to the front wheel f. According to this, the axial load applied to the rear wheel r of the tractor 2 can be equalized between the front and rear wheels, and the axial load applied to the rear wheel r can be made equal to or less than the set value. At this time, the operator can adjust the amount of movement of the coupler 4 with reference to the over amount displayed on the monitor unit 15a. At this time, although the wheels of the trailer 3 are locked, the tractor 2 can normally travel. Therefore, the position of the coupler 4 can be adjusted by releasing the lock portion 8 of the position adjusting mechanism 5 and slightly moving the tractor 2 in the front-rear direction. Can be changed. The adjustment of the axial load applied to the rear wheel r of the tractor 2 can be adjusted not only by moving the position of the coupler 4 but also by measures such as moving the position of the load loaded on the trailer 3.

  If “Yes” is determined in step S2, “margin” is displayed in step S3, and the driver adds the luggage to the trailer 3 with reference to the displayed “margin”. Measures such as loading can be considered.

  In addition, when it is determined “No” in step S4 of the above-described flow, the operator such as the driver can also use the position adjustment mechanism 5 in the same manner as when “No” is determined in step S2. Perform readjustment. Furthermore, when it is determined “No” in step S4, it is determined “Yes” in step S2. Therefore, there is no problem with straight running or running on a road surface with small pitching. Therefore, when it is determined “No” in step S4, the vehicle is allowed to travel with a vehicle speed limit. According to this, since the connection vehicle 1 can be moved, for example, the position adjustment mechanism 5 can be readjusted by moving the connection vehicle 1 to another location.

(Effects according to embodiments of the present invention)
According to the control device 14 of the articulated vehicle 1 described above, the axle load determination unit 18 that determines whether the axle weight detected by the axle weight sensor ra is equal to or less than a predetermined set value, and the axle weight sensor ra. Since it has an axle load calculation unit 19 that calculates a difference value between the detected axle load and a predetermined set value, and a display control unit 20 that displays information corresponding to the difference value calculated by the axle load calculation 19. The detailed information on the axial load of the tractor 2 can be displayed on the display unit 15. Thereby, in order to make the axial weight of the tractor 2 appropriate, it is possible to present information to the driver as a reference when the driver considers what measures should be taken.

  At this time, the display control unit 20 causes the display unit 15 to display information corresponding to the difference values stepwise in the positive direction and the negative direction centering on the predetermined set value. It is possible to grasp the detailed information in a way that is easy to understand visually.

(Other embodiments)
The embodiment described above can be variously modified without departing from the gist thereof. For example, the display example of the display unit 15 may be variously changed. For example, the alarm lamp 15c may be omitted such that the monitor unit 15a displays image information corresponding to the alarm lamp 15c. Or if the monitor part 15a is a type which has a speaker, the alarm buzzer 15b can be abbreviate | omitted and the function of the alarm buzzer 15b can be substituted by the speaker of the monitor part 15a. According to this, the display part 15 can be only the monitor part 15a. Also, the alarm buzzer 15b and the alarm lamp 15c may be assigned different roles individually without linking their operations.

  Further, in the process of step S4 in FIG. 4, it is determined whether or not all the items of the forward radius, the skirt radius, the connection total length, and the pitching angle of the trailer 3 are within the range of appropriate values. In this determination process, it may be determined whether or not the axle load is within an appropriate value range. Even if the axle load applied to the axle of the rear wheel of the tractor 2 is within a predetermined set value range, if the axle load applied to the axle of the rear wheel is too light, the difference in axle load between the front and rear wheels is large. This is because it is presumed that it is not preferable for traveling.

  Moreover, you may connect between the control apparatus 14 and the display part 15 by radio | wireless communication. According to this, the display of the display part 15 can be confirmed in the place away from the connecting vehicle 1.

  Further, the display unit 15 may be provided with an input function (keyboard or the like) of vehicle type information (not shown).

  The vehicle type information may be input by reading a bar code, QR code, IC tag or the like attached to the trailer 3 instead of manually by an operator such as a driver. In this case, a reading function such as a barcode, QR code, or IC tag is provided on the control device 14 side.

  The control device 14 can be realized by executing a predetermined program in which the information processing device is installed in advance. Such an information processing apparatus has, for example, a memory, a CPU (Central Processing Unit), an input / output port, and the like. The CPU of the information processing apparatus reads and executes a control program as a predetermined program from a memory or the like. Thereby, the function of the control device 14 is realized in the information processing apparatus. An ASIC (Application Specific Integrated Circuit), a microprocessor (microcomputer), a DSP (Digital Signal Processor), or the like may be used instead of the CPU.

  Further, even if the predetermined program described above is stored in the memory of the information processing apparatus before shipment of the control device 14, it is stored in the memory of the information processing apparatus after shipment of the control device 14. It may be a thing. Further, a part of the program may be stored in a memory of the information processing apparatus after the control device 14 is shipped. The program stored in the memory or the like of the information processing apparatus after shipment of the control device 14 may be, for example, the one installed on a computer-readable recording medium such as a CD-ROM or the Internet. The one downloaded via the transmission medium may be installed.

  The predetermined program described above includes not only a program that can be directly executed by the information processing apparatus but also a program that can be executed by being installed on a hard disk or the like. Also included are those that are compressed or encrypted.

  Thus, by realizing the control device 14 with the information processing device and the program, it becomes possible to flexibly cope with mass production and specification change (or design change).

  Note that the program executed by the information processing apparatus may be a program that is processed in time series in the order described in this specification, or may be necessary in parallel or when a call is made. It may be a program that performs processing at timing.

  In addition, for the information on the axle load applied to the front wheel f and the rear wheel r of the tractor 2 described above, the axle load sensors fa and ra are omitted. For example, when the tractor 2 is equipped with an air suspension, the tractor 2 has a trailer. 3 can be obtained by detecting a change in air pressure of the air suspension before and after connecting the three.

DESCRIPTION OF SYMBOLS 1 ... Connection vehicle, 2 ... Tractor, 3 ... Trailer, 4 ... Coupler, 5 ... Position adjustment mechanism (position adjustment means), 6 ... Slide-type connection pulling device, 14 ... Control device, 15 ... Display part, 16 ... Vehicle type Coupler position storage unit, 17... Axle load set value storage unit (part of axle load determination means, part of calculation means), 18... Axle load determination part (axle weight determination means), 19. Means), 20... Display control section (display means), fa, ra... Axle load sensor (axle weight detection means)

Claims (4)

When connecting the trailer to the tractor, it has a coupler to be coupled with the trailer connection part,
Position adjusting means capable of changing the position of the coupler along the straight traveling direction of the tractor;
A shaft weight detecting means for detecting the shaft weight;
Having
In a control device for a connected vehicle provided with a slide type connecting device,
Axle weight determining means for determining whether or not the axle weight detected by the axle weight detecting means is equal to or less than a predetermined set value;
Calculating means for calculating a difference value between the axle weight detected by the axle weight detecting means and the predetermined set value;
Display means for displaying information corresponding to the difference value calculated by the calculation means;
Having
A control device characterized by that. The control device according to claim 1,
The display means displays information corresponding to the difference value stepwise in the positive direction and the negative direction around the predetermined set value,
A control device characterized by that. When connecting the trailer to the tractor, it has a coupler to be coupled with the trailer connection part,
Position adjusting means capable of changing the position of the coupler along the straight traveling direction of the tractor;
A shaft weight detecting means for detecting the shaft weight;
Having
In a connection information display method executed by a connected vehicle control device including a slide type connection device,
An axle weight determination step for determining whether or not the axle weight detected by the axle weight detector is equal to or less than a predetermined set value;
A calculation step of calculating a difference value between the axial weight detected by the axial weight detection means and the predetermined set value;
A display step of displaying information corresponding to the difference value calculated by the calculation step;
Having
A connected information display method characterized by the above. In the connection information display method according to claim 3,
The display step includes a step of displaying information corresponding to the difference value stepwise in a positive direction and a negative direction around the predetermined set value,
A connected information display method characterized by the above.

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