JP2003285662A - Inspection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inspection system, which comprises a rotary cam interlocking an artificially operable operating tool, and a detecting switch operated by the rotary cam to detect the operating position of the operating tool, and makes the detection switch precisely and quickly inspect whether or not an operating area of the operating tool in a detected status is proper one. <P>SOLUTION: The inspection system comprises an operating position detecting means 60 for detecting the operation position of the operating tool, a switch status detecting means 70 for detecting the status of the detecting switch, and an operating area measuring means 83 for making the detecting switch measure the operating area of the operating tool in the detected status on the basis of detection results given by the operating position detecting means 60 and the switch status detecting means 70. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a rotary cam that is interlocked with an operation tool that can be manually operated, and a detection switch that is operated by the rotary cam to detect the operating position of the operation tool. The present invention relates to an inspection device that inspects a detection state of a detection device.

[0002]

2. Description of the Related Art For example, in a tractor, as shown in FIG.
As shown in FIG. 5, the detection switch 51 assembled to the switch support portion 5a of the mission case 5 and the shifter operation arm 15 are integrally rotatably connected to one end side, and the main speed change lever 11 is integrated to the other end side. A rotary cam 53 configured by providing a switch operation notch 52 in the middle of the rotary support shaft 13 rotatably connected to the main shift lever 11 at a first speed position F.
When operated to the neutral position N between 1 and the reverse position R, the switch operation notch 52 causes the operation portion 51b of the detection switch 51 to operate.
When the rotary cam 53 releases the pressing operation on the operating portion 51b by signing, the detection device 50 detects that the main switch lever 11 has been operated to the neutral position N by switching the detection switch 51 from ON to OFF. If the detection switch 51 of the detection device 50 is provided in the operation circuit of the engine starter, the main transmission lever 11 is operated to the neutral position N, and the traveling transmission is operated to the neutral state. , Some are configured so that the engine is started by operating the engine starter.

In this case, as the operating portion 51b of the assembled detecting switch 51 comes closer to the switch operating notch 52 due to manufacturing or assembling error of the switch supporting portion 5a or the detecting switch 51, the detecting switch 51 becomes closer. The operation range of the main speed change lever 11 where 51 enters is widened. That is, the operation range of the main shift lever 11 in which the detection switch 51 is in the neutral detection state is widened. On the other hand, the farther the operating portion 51b of the assembled detection switch 51 is from the switch operation notch 52, the narrower the operating range of the main speed change lever 11 into which the detection switch 51 enters. That is, the operation range of the main shift lever 11 in which the detection switch 51 is in the neutral detection state is narrowed.

When the operation range of the main speed change lever 11 in which the detection switch 51 is in the neutral detection state becomes too wide, the engine starts even if the main speed change lever 11 approaches the first speed position F1 or the reverse position R, and the engine starts. When the engine is started, the shift gear may approach the transmission position and a squeal may occur. On the other hand, if the operation range of the main transmission lever 11 where the detection switch 51 is in the neutral detection state becomes too narrow, the detection switch 51 is not in the neutral detection state even if the main transmission lever 11 is operated to the neutral position. The engine starting device does not operate, and it is difficult to perform the engine starting operation because it is necessary to operate the main shift lever 11 so as to accurately match the predetermined position.

That is, if the operation range of the main transmission lever 11 in which the detection switch 51 is in the neutral detection state becomes too wide or too narrow, the detection result of the detection device becomes inadequate. Therefore, in this detection device, the detection switch is in the neutral detection state. It is inspected whether the operation range of the main gear shift lever is within an appropriate range, and if it is wider or narrower than the appropriate operation range. If it is, it is necessary to adjust it so that the operating range is appropriate.

[0006]

Conventionally, in order to inspect the detection state of the above-described detection device, the main transmission lever is artificially operated to switch the detection switch, and the main transmission lever is in the operation path. This is done by artificially determining whether the detection switch is turned on if it is in the operation position of, which is troublesome. In addition, there were cases where the judgments varied, and the operation range in which the neutrality detection state was reached was uneven.

An object of the present invention is to provide an inspection device capable of accurately and promptly inspecting a detection device such as the above-mentioned detection device for starting an engine to check whether it is in an appropriate detection state. It is in.

[0008]

The constitution, action and effect of the invention according to claim 1 are as follows.

[Configuration] Detection state of a detection device provided with a rotary cam that is interlocked with an operation tool that can be manually operated and a detection switch that is operated by the rotation cam to detect the operating position of the operation tool. In the inspection device for inspecting, the operation position detecting means for detecting the operation position of the operation tool on the operation path, the switch state detecting means for detecting the state of the detection switch, the operation position detecting means and the switch state detection. An operation area measuring means for measuring an operation area of the operation tool in which the detection switch is in the detection state is provided based on the detection result by the means.

[Operation] When the operation switch is started to perform the inspection process, the operation position detecting means detects the operation position of the operation tool on the operation path, and the switch state detecting means operates the detection switch along with the movement of the operation tool. Is detected, and the operation range measuring means measures the operation range of the operation tool in which the detection switch is in the detection state based on the detected operation position by the operation position detection means and the detection switch state by the switch state detection means. It is something. With this, the operation of the operation tool in which the detection switch is in the detection state, such as displaying the measurement operation area to know, or determining whether the measurement operation area is out of the set operation area and displaying the result, etc. It is possible to accurately and quickly know what kind of operation area the operation area is based on the measurement operation area. [Effect] If the position of the detection switch with respect to the rotary cam is appropriate, the measurement operation area by the operation area measuring means is as designed or close to that, and if the position of the detection switch with respect to the rotation cam is inappropriate. Since the measurement operation range by the operation range measurement means is different from the design operation range or something close to it, whether the detection device is as designed or close to it is based on the measurement operation range. Can be accurately and quickly inspected.

The structure, operation and effect of the invention according to claim 2 are as follows.

[Configuration] In the configuration of the invention according to claim 1, the detection device is a detection device for detecting a neutral position of an operating tool for switching the transmission between a transmission state and a neutral state by a detection switch, The operation range measuring means is configured to measure the operation range of the operation tool in which the detection switch is in the neutral detection state.

[Operation] The detection device detects that the transmission is in the neutral state based on the operation position of the operating tool, and the neutral detection of the detection device is performed as designed or in a state close thereto. As described above, it is possible to accurately and promptly inspect whether or not the condition is satisfied.

[Effect] As described at the beginning, when the transmission is constructed so that the engine can be started if the transmission is operated in the neutral state, whether or not the detection device performs the detection operation as designed or in a state close thereto. Can be accurately and quickly inspected, and as described at the beginning, gear squeal does not occur, and the starting operation can be easily performed.

The structure, operation, and effect of the invention according to claim 3 are as follows.

[Structure] In the structure of the invention according to claim 1 or 2, there is provided operation range display means for displaying a measurement operation range by the operation range measurement means.

[Operation] The measurement operation area by the operation area measurement means is displayed by the operation area display means, and the display allows the measurement operation area to be known accurately and quickly.

[Effect] Therefore, it is possible to know the measurement operation range accurately and quickly, and to perform the above-described accurate inspection of the detection device easily and quickly.

The constitution, action and effect of the invention according to claim 4 are as follows.

[Structure] In the structure of the invention according to any one of claims 1 to 3, a judgment means for judging whether or not the measurement operation area by the operation area measuring means is out of the set operation area, and this judgment. And a judgment display means for displaying the judgment result by the means.

[Operation] The determination means determines whether or not the measurement operation area by the operation area measurement means is out of the set operation area, and the result of this determination is displayed by the determination display means. It is possible to easily and quickly know whether or not the operation area is out of the set operation area.

[Effect] Whether or not the measurement operation area is out of the set operation area can be easily and quickly known, and the above-described accurate inspection of the detection device can be easily and quickly performed.

The constitution, action and effect of the invention according to claim 5 are as follows.

[Structure] In the structure of the present invention according to any one of claims 1 to 4, the operation position detecting means is provided with a detection object detachably attached to the operation tool so that the stroke sensor can move toward and away from the operation sensor. And is configured to detect the operation position of the operation tool on the operation path based on the stroke of the detection target object with respect to the stroke sensor.

[Operation] When the object to be detected is mounted on the operating tool and the operating tool is operated, the object to be detected approaches and separates from the stroke sensor, and the stroke sensor operates the operating tool based on the separated stroke. The position is detected.

[Effect] The inspection can be performed by simply detecting the operation position of the operation tool by simply mounting the detection object on the operation tool and operating the operation tool.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a pair of left and right steerable and drivable front wheels 1, a pair of left and right drivable rear wheels 2, a prime mover having an engine 3, a driving seat 4, and A pair of left and right lift arms 6 and a power take-off shaft are attached to a mission case 5 which constitutes a vehicle body frame of a self-propelled vehicle body having a driver unit equipped with a tipping protection frame 8 (hereinafter referred to as ROPS 8). 7 is provided to connect various working devices such as a rotary cultivator to the rear part of the vehicle body so as to be able to move up and down, and to transmit the driving force from the engine 3 by the power take-off shaft 7 to the connected working devices. Thus, the tractor is configured so as to constitute various working machines such as a riding type cultivator.

The driving force from the engine 3 is changed to a driving force for traveling in a total of four stages including three stages of forward movement and one stage of reverse movement, and the front and rear wheels 1, 2
Gear transmission 10 for transmission to
A work gear transmission that shifts the driving force from the engine 3 into a total of three stages of working driving force of two stages of forward rotation and one stage of reverse rotation and transmits it to the power take-off shaft 7 is provided inside the mission case 5. is there.

The traveling gear transmission 10 is configured to be operated by a traveling gear shift operation device having a main gear shift lever 11 located on the side of the driver's seat 4. This traveling gear shift operation device is shown in FIG. It is constructed as shown in FIG.

That is, the main speed change lever 11 supports the base end side of the main speed change lever 11 at one end side via the connecting member 11a, and the other end side relatively rotates the pair of support portions 12a, 12b of the mission case 5. And is supported by the transmission case 5 via a rotation support shaft 13 that is slidably inserted, and swings around the axis of the rotation support shaft 13 in the front-rear direction of the vehicle body. It is adapted to slide in the direction along the axis of, that is, in the lateral direction of the vehicle body.

A shifter operation arm 15 is fixed to a portion of the rotary support shaft 13 located inside the mission case 5, and a main guide lever 11 is fixed to a rear wheel fender. When sliding operation is performed in the lateral direction of the vehicle body along the selection operation path 31 formed by the lateral groove portion of the guide groove, the rotation support shaft 13 slides in the lateral direction of the vehicle body with respect to the mission case 5 to move the shifter operation arm 15. Then, the tip side of this shift operation arm 15 is the first
A shift gear to be operated can be selected from the first shift gear 21 and the second shift gear 22 of the traveling gear transmission 10 by entering one of the operation recesses 18c and 19c of the shifter 18 and the second shifter 19.

When the main shift lever 11 is swung in the forward and backward direction of the vehicle body along the forward operation path 32 formed by one of the front and rear grooves of the guide groove, the rotary support shaft 13 rotates and the shifter operation arm 15 swings. When operated, the shifter operation arm 15 acts on the operation concave portion 18c of the first shifter 18 to slide the first shifter 18 along the shifter support shaft 16, and the first shifter 18 is moved by the fork portion 18b. 1 The shift gear 21 is slidably operated. When the main shift lever 11 is oscillated in the vehicle front-rear direction along the forward-reverse operation path 33 formed by the other front-rear direction groove portion of the guide groove, the rotation support shaft 13 rotates and the shifter operation arm 1
5, the shifter operation arm 15 acts on the operation recess 19c of the second shifter 19 to slide the second shifter 19 along the shifter support shaft 17,
The shifter 19 slides the second shift gear 22 with the fork portion 19b.

A spring 26 is provided inside the first shifter 18.
The positioning body 27, which is a sphere provided so as to be slidably biased toward the shifter support shaft 16, by the positioning body 27, which is provided inside the second shifter 19 similarly to the first shifter 18, and the pair of shifters. Positioning grooves 16a to 1 provided at three locations in the longitudinal direction of each of the support shafts 16 and 17
6c, 17a to 17c, the first shift gear 21,
A detent mechanism 28 for positioning the second shift gear 22 and the main shift lever 11 at respective operating positions is configured.

A rotation support shaft is provided by a spring 29 externally fitted to the rotation support shaft 13 between the arm mounting member 14 fixing the shifter operation arm 15 to the rotation support shaft 13 and the wall portion of the mission case 5. By slidingly urging 13 the main transmission lever 11 in the neutral position N is inserted into the notch 34 of the lever guide 30 communicating with the intermediate portion of the forward operation path 32 and fixed in the neutral position N. It is configured to urge as much as possible.

That is, when the main transmission lever 11 is operated to the neutral position N located between the forward operation path 32 and the forward / reverse operation path 33, the first shifter 18 causes the first shift gear 2 to move.
1 is operated to a neutral position which is disengaged from both the forward second speed gear (not shown) and the forward third speed gear (not shown), and the second shifter 19 moves the second shift gear 22 to the first forward speed gear (not shown). )
And the reverse gear (not shown) are disengaged to the neutral position so that the traveling gear transmission 10 moves to the front and rear wheels 1.
It becomes a neutral state so as to stop the transmission to 2. At this time, the detent mechanism 28 includes the positioning body 27 of the first shifter 18 and the positioning body 2 of the second shifter 19.
7 is also the above-mentioned three positioning grooves 1 of the shifter support shafts 16 and 17.
6a to 16c and 17a to 17c are engaged with the central positioning grooves 16b and 17b to be positioned, whereby the shift gears 21 and 22 and the main shift lever 11 are engaged.
Is positioned at the neutral position N.

When the main shift lever 11 is operated to the first speed position F1 located at the front end of the forward / backward operation path 33, the second shifter 19 operates the second shift gear 22 to the transmission position meshed with the forward first speed position. Gear drive for traveling 1
The forward first speed state is set so that 0 transmits the driving force of the first forward speed to the front and rear wheels 1, 2. At this time, the detent mechanism 2
8 is in a positioning state in which the positioning body 27 of the second shifter 19 is engaged with the positioning groove 17c of the shifter support shaft 17, whereby the second shift gear 22 is in the transmission position and the main transmission lever 11 is in the first speed position F1. Are positioned respectively.

When the main shift lever 11 is operated to the reverse position R located at the rear end portion of the forward / backward operation path 33, the second shifter 19 operates the second shift gear 22 to the transmission position meshed with the reverse gear for traveling. The gear transmission 10 is in the reverse drive state so as to transmit the reverse drive force to the front and rear wheels 1, 2. At this time, the detent mechanism 28 is in a positioning state in which the positioning body 27 of the second shifter 19 is engaged with the positioning groove 17a of the shifter support shaft 17, and as a result,
The second shift gear 22 is positioned at the transmission position, and the main shift lever 11 is positioned at the reverse position R.

When the main transmission lever 11 is operated to the second speed position F2 located at the front end portion of the forward operation path 32, the first shifter 18 operates the first shift gear 21 to the transmission position meshed with the second forward speed gear, Driving gear transmission 10
Is in the second forward speed state so as to transmit the driving force of the second forward speed to the front and rear wheels 1, 2. At this time, the dedent mechanism 2
8 is in a positioning state in which the positioning body 27 of the first shifter 18 is engaged with the positioning groove 16c of the shifter support shaft 16, whereby the first shift gear 18 is in the transmission position and the main transmission lever 11 is in the second speed position F2. Are positioned respectively.

When the main shift lever 11 is operated to the third speed position F3 located at the rear end of the forward operation path 32, the first shifter 18 operates the first shift gear 21 to the transmission position in mesh with the forward third speed gear. , Running gear transmission 10
Is in the third forward speed state so that the driving force of the third forward speed is transmitted to the front and rear wheels 1, 2. At this time, the dedent mechanism 2
8 is in a positioning state in which the positioning body 27 of the first shifter 18 is engaged with the positioning groove 16a of the shifter support shaft 16, whereby the first shift gear 21 is in the transmission position and the main shift lever 11 is in the third speed position F3. Are positioned respectively.

The work gear transmission is configured to be operated by a work shift operation device having a PTO lever 35 located on the rear side of the main shift lever 11 on the side of the driver's seat 4. This work speed change operation device is constructed as shown in FIG.

That is, the PTO lever 35 is
The base end side of the O-lever 35 is supported at one end side via a connecting member 36, and the other end side is supported by the mission case 5 via a rotation support shaft 38 rotatably attached to a support portion 37 of the mission case 5. It is designed to swing in the front-rear direction of the vehicle body around the axis of the rotation support shaft 38.
Inside the transmission case 5, the rotary support shaft 38 has the same structure as the rotary support shaft 13 of the travel speed change operation device, and is linked to the shift gear of the work gear transmission. However, in the work gear transmission,
One shifter (not shown) slides on one shift gear to engage / disengage each of the high speed gear, the low speed gear, and the reverse rotation gear.

That is, the PTO lever 35 is provided with an operation path 39 formed by one linear guide groove of the lever guide 30.
Swinging in the longitudinal direction of the vehicle body along the
When operated to the high speed position H located at the front end of 9, the shifter operates the shift gear to the transmission position meshed with the high speed gear so that the work gear transmission transmits high speed positive rotation power to the power takeoff shaft 7. Becomes fast. When the PTO lever 35 is operated to the low speed position L located in the middle part of the operation path 39, the shifter operates the shift gear to the transmission position meshed with the low speed gear, and the working gear transmission moves at a low speed with respect to the power take-off shaft 7. It becomes a low speed state so as to transmit rotational power. PTO lever 3
When 5 is operated to the reverse rotation position G located at the rear end of the operation path 39, the shifter operates the shift gear to the transmission position where it meshes with the reverse rotation gear, and the work gear transmission causes the reverse rotation power with respect to the power extraction shaft 7. It will be in the reverse state to transmit. Whether the PTO lever 35 is operated to the first neutral position N1 between the high speed position H and the low speed position L or to the second neutral position N2 between the low speed position L and the reverse rotation position G, the shifter shifts the gears. Is operated to a neutral position deviating from each of the high speed gear, the low speed gear, and the reverse rotation gear, and the work gear transmission is brought into a neutral state so as to stop transmission to the power take-off shaft 7.

The PTO lever 35 is moved to the high speed position H, the low speed position L, the reverse rotation position G, the first neutral position N1, and the second neutral position N2.
Regardless of which one is operated, the detent mechanism positioning body includes a positioning body provided on the shifter and a plurality of positioning grooves provided on the shifter support shaft, like the detent mechanism 28 of the travel speed change operation device. Is engaged with a predetermined positioning groove to bring the detent mechanism into a positioning state, the shift gear is positioned at each transmission position and each neutral position, and the PTO lever 35 is at the high speed position H, the low speed position L, the reverse rotation position G, and the first position. The first neutral position N1 and the second neutral position N2 are positioned at respective operating positions.

As shown in FIG. 7, the engine starter 40
Key switch device 4 in the operation circuit 41 for operating the
2 and the starter relay 43, a detection switch 51 of the traveling mission detection device 50 for detecting the neutral state of the traveling gear transmission 10 and a detection switch of the work mission detection device 55 for detecting the neutral state of the working gear transmission. 56 and 56 are connected in series.

That is, even if the key switch device 42 is operated to the engine starting position ST, if at least one of the traveling gear transmission 10 and the working gear transmission is in the transmission state, the engine starting device 40 does not operate and the engine starts. 3 is not applied, and only when both the traveling gear transmission 10 and the working gear transmission are in the neutral state, the engine starting device 40 can be operated to start the engine 3.

As shown in FIGS. 2 and 5, the traveling mission detection device 50 includes the detection switch 51 mounted on the switch support portion 5a of the mission case 5 by a mounting screw portion 51a, and the rotary support shaft 13. And a rotary cam 53 having a switch operation notch 52 having a substantially V-shaped cross section at its intermediate portion.

That is, the switch operation notch 52 is formed in the neutral position N in the forward operation path 32 of the main speed change lever 11.
When the main shift lever 11 is operated to the neutral position N of the forward / backward operation path 33, the other end side corresponds to the operation portion 51b of the detection switch 51 when the main switch lever 11 is operated. Corresponding to the operation unit 51b of
It is formed in a groove shape having a length along the axial direction of the rotary support shaft 13, and when the main speed change lever 11 is oscillated in the longitudinal direction of the vehicle body, the rotary cam 53 rotates in conjunction with the main speed change lever 11. However, if the main gear shift lever 11 is operated to the neutral position N on either the forward operation path 32 or the forward-backward operation path 33,
The switch operation notch 52 is the operation portion 5 of the detection switch 51.
The detection switch 51 is turned on when the rotary cam 53 releases the pressing operation on the operation portion 51b by coding 1b. In both the forward operation path 32 and the forward-reverse operation path 33, the main transmission lever 11 is rocked from the neutral position N to the vehicle body front side or the vehicle body rear side, and the operation stroke is the switch operation notch of the detection switch 51. 52
When a predetermined stroke determined by the positional relationship of the rotary support shaft 13 in the radial direction with respect to and the size of the switch operation notch 52 in the circumferential direction of the rotary support shaft is reached, the rotary cam 53 presses the operating portion 51b. By doing so, the detection switch 51 is turned off.

As a result, the traveling mission detecting device 50
Detects whether the main transmission lever 11 has been operated to the neutral position N by the detection switch 51, and when it detects that the main transmission lever 11 has been operated to the neutral position N, the traveling gear transmission 10 is neutralized based on the detection result. The operation circuit 41 of the engine starter 40 is closed in this detected state.

As shown in FIGS. 4 and 6, the work mission detection device 55 includes the detection switch 56 mounted on the switch support portion 5b of the mission case 5 by a mounting screw portion 56a, and the rotary support shaft 38. The rotary cam 58 is formed by providing switch operation notches 57 having a substantially V-shaped cross section at two positions in the middle of the rotation supporting shaft circumferential direction.

That is, when the PTO lever 35 is oscillated, the rotary cam 58 rotates in conjunction with the PTO lever 35, and when the PT0 lever 35 is operated to the first neutral position N1, one switch is operated. The operation notch 57 corresponds to the operation portion 56b of the detection switch 56, and the rotary cam 58 releases the pressing operation on the operation portion 56b, so that the PT0 lever 35 operates.
Is operated to the second neutral position N2, the other switch operation notch 57 is provided on the operation portion 56b of the detection switch 56.
In this case, the detection switch 56 is turned on by releasing the pressing operation of the operating portion 56b by the rotary cam 58. When the PT0 lever 35 is operated from the first neutral position N1 to the front side or the rear side, the second
When operated from the neutral position N2 to the front side or the rear side,
The operation stroke reaches a predetermined stroke determined by the positional relationship in the radial direction of the rotation support shaft 38 with respect to the switch operation notch 57 of the detection switch 56 and the size of the switch operation notch 57 in the rotation support shaft circumferential direction. Then, the rotary cam 58 presses the operating portion 56b, and the detection switch 56 is turned off.

As a result, the work mission detection device 55
Causes the detection switch 56 to move the PTO lever 35 to the first position.
When it is detected whether or not the neutral position N1 or the second neutral position N2 is operated, and when it is detected that the first neutral position N1 or the second neutral position N2 is operated, the work gear transmission is based on the detection result. Is operated to a neutral state, and in this detected state, the operation circuit 41 of the engine starting device 40 is closed.

In both the detection switch 51 of the traveling mission detection device 50 and the detection switch 56 of the work mission detection device 55, a shim 59 is provided between the switch body and the switch support portions 5a and 5b, and By adjusting the thickness of the shim 59, the detection switch 5
The positions of 1 and 56 with respect to the rotation support shafts 13 and 38 are adjusted so that the operation ranges of the main transmission lever 11 and the PTO lever 35 in which the detection switches 51 and 56 are in the detection state are not excessive. is there.

Between the neutral position N of the main speed change lever 11 and the first speed position F1, the detection switch 51 of the traveling mission detection device 50 is in the detection state, the front operation area 11F of the main speed change lever 11 and the neutral position of the main speed change lever 11. Between the position N and the reverse position R, the detection switch 51 of the traveling mission detection device 50 is in the detection state, between the rear operation range 11R of the main transmission lever 11 and the first neutral position N1 of the PTO lever 35 and the high speed position H. At the first front operating area 35F1 of the PTO lever 35 in which the detection switch 56 of the work mission detecting device 55 is in the detection state, and the work mission detecting device 55 detects between the first neutral position N1 of the PTO lever 35 and the low speed position L. When the switch 56 is in the detection state, the first rear operation area 35R1 of the PTO lever 35, the second neutral position N2 of the PTO lever 35, and The work is performed between the second front position 35F2 of the PTO lever 35, the second neutral position N1 of the PTO lever 35, and the reverse rotation position G, in which the detection switch 56 of the work mission detection device 55 is in the detection state between the high speed position L. The second rear operation area 35R2 of the PTO lever 35 in which the detection switch 56 of the mission detection device 55 is in the detection state,
Each of the neutral regions W of the main transmission lever 11 and the PTO lever 35, in which the shift gear does not mesh with the transmission gears located on both sides in the shift direction even if the main transmission lever 11 or the PTO lever 35 moves, It can be defined as shown in 12. The vertical axis shown in FIG. 12 indicates the main shift lever 11 and the PTO.
The operation position of the lever 35 is shown, and the horizontal axis represents the main shift lever 1
1, the movement time of the PTO lever 35 is shown. In addition, FIG.
The waveform A shown in FIG.
The output of the operation position detecting means 60 for detecting the operation position of No. 5 is shown. The waveform B indicates the detection switch 51 and the detection switch 5.
Switch state detecting means 70 for detecting the switch state of No. 6
The horizontal line portion B1 of the waveform B indicates the cut state of the detection switches 51 and 56, and the horizontal line portion B2 indicates
The ON state of the detection switches 51 and 56 is shown.

The model input means 75, the switch state detecting means 70, and the operation position detecting means 60 shown in FIG.
The inspection device main body 80 with which the means 75, 70, 60 are associated with each other, and the liquid crystal display device 90 associated with the inspection device main body 80 are used to detect the traveling mission detection device 50 and the work mission detection device. The inspection device for the device 55, the traveling speed change operation device, and the work speed change operation device is configured.

In this inspection device, the traveling mission detection device 50 outputs a detection result of a state in which there is no excess or deficiency in each of the front operation area 11F and the rear operation area 11R of the main transmission lever 11 based on the above definition. It is inspected whether or not the work mission detection device 55 detects the PTO lever 35.
The first front operating area 35F1, the first rear operating area 35R1,
It is inspected whether or not each of the second front operation area 35F2 and the second rear operation area 35R2 gives a detection result of a state in which there is no excess or deficiency, and the traveling speed change operation device and the work speed change operation device are The first working detent, which is the running detent width as the working width when the detent mechanism 28 positions the main transmission lever 11 at the neutral position N, and the working width when the detent mechanism positions the PTO lever 35 at the first neutral position N1. The width and detent mechanism move the PTO lever 35 to the second neutral position N.
It is to inspect whether or not the second working detent width, which is the working width for positioning at 2, is not excessive or insufficient, and in detail, it is configured as follows.

The model input means 75 is a bar code reader using infrared rays, and by causing the reader section 76 to act on the tag attached to the tractor to be inspected, the model and machine of the tractor described on the tag. A bar code indicating a number or the like is read, and information such as the model of the tractor and the machine number is output to the inspection device body 80.

The switch state detecting means 70 comprises the clamp 7
The starter relay 4 of the operating circuit 41 of the engine starting device 40 is composed of a current sensor 1 of which is an input terminal.
41a between the engine 3 and the engine starter 40 (FIG. 7)
It is connected to the clamp 71 by the clamp 71 to detect whether the detection switches 51 and 56 of the traveling mission detection device 50 or the work mission detection device 55 to be inspected are in the on or off state, and the detection result is displayed. Output to the inspection device body 80.

That is, one of the traveling mission detection device 50 and the work mission detection device 55, which is not the inspection target, is placed in the detection switch 51, 56, and the key switch device 42 is operated to the engine starting position ST. If the detection switch 51, 56 of the one of the traveling mission detection device 50 and the work mission detection device 56 to be inspected is in the closed state,
When a current is generated in the operation circuit portion 41a and the detection switches 51 and 56 are turned off, no current is generated in the operation circuit portion 41a. As a result, the switch state detection device 70 makes the traveling mission detection device 50 and the work mission detection device 5 to be inspected based on the detection result that the current is not generated in the operation circuit portion 41a.
Of the traveling mission detection device 50 and the work mission detection device 55 to be inspected on the basis of the detection result that the detection switches 51 and 56 of No. 5 are in the OFF state and the current is generated in the operation circuit portion 41a. Detection switch 5
It is detected that 1,56 are in the ON state.

As shown in FIG. 9, the operation position detecting means 60 has a sensor support 62 having a mounting portion 61 having a pair of ROPS holding plates 61a on the back side, and a sensor support 62 on the front side of the sensor support 62. Stroke sensor 63 consisting of a rotary encoder whose case is fixed to one end
And a guide roller 64 rotatably attached to the other surface side of the sensor support body 62 and a detection target body 66 provided at the end portion of the operation cable 65 of the stroke sensor 63. Yes, in detail, it is configured as follows.

As shown in FIG. 10, by attaching the mounting portion 61 to the base portion of the lops 8, a pair of lops holding plates 61a hold the lops 8 and attach the sensor support 62 to the lops 8, thereby making a stroke. Sensor 63
The guide roller 64 and the guide roller 64 can be fixed to the lops 8, and the stroke sensor 63 and the guide roller 64 can be removed from the lops 8 together with the sensor support 62 by removing the lops holding plate 61a from the lops 8.

The object to be detected 66 is a loop cable having a pair of magnets 67, and is used for the main transmission lever 11 and the PT.
The O-lever 35 can be fitted from above so as to be easily attached to the O-lever 35, or can be pulled out upward from the main transmission lever 11 or the PTO lever 35 and removed for operation. Further, at the time of inspection, the main gearshift lever 11 and the PTO lever 35 can be fixed by attracting with a pair of magnets 67 to the rod portions that are out of the grips of the main gearshift lever 11 and the PTO lever 35 so that they do not move relative to each other. Has become.

As a result, the operation position detecting means 60 winds the operation cable 65 of the stroke sensor 63 fixed to the rope 8 around the guide roller 64, as shown in FIG. Main shift lever 1
1 or PTO lever 35 fixed to the main transmission lever 11 or P
By operating the TO lever 35, the main shift lever 1
The operation position on the forward operation path 32 or the forward-backward operation path 33 and the operation position on the operation path 39 of the PTO lever 35 are detected, and the detection result is output to the detection device main body 80.

That is, when the main speed change lever 11 and the PTO lever 35 are operated along the operation paths 33 and 39, the detection object 66 moves together with the main speed change lever 11 and the PTO lever 35, and is separated from the stroke sensor 63. As it approaches or approaches, the distance stroke of the detection object 66 with respect to the Slotalk sensor 63 changes. Then, the pull-out stroke of the operation cable 65 of the stroke sensor 63 changes, so that the stroke sensor 63 detects the position of the detection target body 66 based on the pull-out stroke of the operation cable 65.
Or as the operating position of the PTO lever 35.

The inspection apparatus main body 80 is formed by using a microcomputer, and as shown in FIG.
1, a detent width setting means 82, an operation area measuring means 83, a detent width measuring means 84, a judging means 85, a start switch 86, a detent confirmation switch 87 and a reset switch 88, and a model input means 75 and a switch state detecting means. 70, based on the information from each of the operation position detecting means 60 and the information from each of the switches 86, 87, 88,
It works as follows.

That is, when the model information is input from the model input means 75, it is set in advance as something to be equipped in the traveling mission detecting device 50 and the work mission detecting device 55, and is set corresponding to each model and stored in the memory. Pre-setting operation area, post-setting operation area, setting first
Based on the model information from the model inputting unit 75 and the setting first rear operating region, the setting second front operating region, the setting second rear operating region, the operating region setting unit 81 selects the tractor to be inspected. Corresponding pre-setting operation area 11FS, post-setting operation area 11R
S, setting first pre-operation area 35F1S, setting first post-operation area 3
5R1S, the setting second pre-operation area 35F2S, and the setting second post-operation area 35R2S are set. Furthermore, the set travel detent width and the set work detent width, which are set in advance as those to be provided in the travel speed change operation device and the work speed change operation device, are set corresponding to each model and are input to the memory unit, Based on the model information from the model input unit 75, the detent width setting unit 82 sets the set traveling detent width RDS and the set work detent width TDS corresponding to the tractor to be inspected.

A measurement command is input from the start switch 86, and the switch state detecting means 70 and the operation position detecting means 6 are input.
When the detection result is input from 0, the operation range measuring means 83 determines the reverse position R of the speed change lever 11 based on the detection result of the switch on by the switch state detecting means 70 and the detected operation position by the operation position detecting means 60. The detection switch 51 between the neutral position N and the reverse position G of the PTO lever 35 and the second neutral position N2, and the PTO lever 35.
Between the low speed position L and the first neutral position N1 of the shift lever 11 after the detection switch 56 is switched from ON to OFF, between the first speed position F1 of the speed change lever 11 and the neutral position N. Then, the detection switch 51 turns the PTO lever 3
5 between the low speed position L and the second neutral position N2, and the PTO
Between the high speed position H of the lever 35 and the first neutral position N1, the detection switch 56 is switched from the cut-off state to the forward operation position PF (FIG. 12), and the shift lever 11 is set to the neutral position N by the detent mechanism 28. , PTO lever 35 measures each of positioning operation positions PN (FIG. 12) at which the PTO lever 35 is positioned by the detent mechanism as the first neutral position N1 and the second neutral position N2, respectively. Pre-operation area 11
FK, post-measurement operation area 11RK, measurement first pre-operation area 35F1K, measurement second pre-operation area 35F2K, measurement first post-operation area 35R1K, measurement second of the work mission detection device 55
Each of the post-operation areas 35R2K is measured. Then, the command to display each measurement operation area is output to the display device 90. Further, the determination means 85 causes the pre-measurement operation area 11
Pre-setting operation area 11FS by FK and operation area setting means 81
And the post-measurement operation area 11RK and the post-setting operation area 11RS by the operation area setting means 81, and the measurement first pre-operation area 35F.
1K and setting first operation area 35 by operation area setting means 81
F1S is the measurement second pre-operation area 35F2K and the second pre-operation area 35F2S set by the operation area setting means 81, and the measurement first post-operation area 35R1K is the first post-operation area 35R1S set by the operation area setting means 81. The measurement second post-operation area 35
Setting by R2K and operation area setting means 81 Second post operation area 3
5R2S is compared with each other to determine whether or not each measurement operation area deviates to the side larger or smaller than the set operation area. When it is determined that the measurement operation area is not off, or when it is determined that it is off Also outputs a command to display each determination result to the display device 90.

When the measurement command is input from the detent confirmation switch 87 and the detection result by the operation position detecting means 60 is input, the detent width measuring means 84 determines the detent mechanism based on the operation position detected by the operation position detecting means 60. 28. Measurement traveling detent width RDK as an operation width when 28 positions the main transmission lever 11 at the neutral position N, and measurement work as an operation width when the detent mechanism positions the PTO lever 35 at the first neutral position N1 The detent width TD1K and the measurement second working detent width TD2K as the working width when the detent mechanism positions the PTO lever 35 at the second neutral position N2 are measured, and a command to display each measured detent width is displayed. Device 90
Output to. Then, the determining means 85 measures the measured traveling detent width RDK and the set traveling detent width RDS by the detent width setting means 82 to measure the first working detent width TD.
1K and the set work detent width TDS by the detent width setting means 82 are compared with the measurement second work detent width TD2K and the set work detent width TDS by the detent width setting means 82, respectively, and each measured detent width is less than the set detent width. Judge whether it is off to the big side or the small side,
A command to display each determination result is output to the display device 90 both when it is determined that it is not disengaged and when it is determined that it is disengaged.

As shown in FIG. 11 and the like, the display device 90
Includes a plurality of display portions 91a to 91c for the inspection result of the traveling mission detection device 50 and a plurality of display portions 91d to 91i for the inspection result of the work mission detection device 55 arranged in the vertical and horizontal directions. The operation area display means 91 and the judgment display means 95 provided with a main display portion 96 located on the side of the operation area display means 91 are provided.
When a display command is input from 0, each measurement operation area and each measurement detent width are displayed by the operation area display means 91, and each judgment result is displayed by the judgment display means 95.

That is, the operation area display means 91 measures the pre-measurement operation area 11FK on the display section 91a, the measured traveling detent width RDK on the display section 91b, the post-measurement operation area 11RK on the display section 91c, and the display section 91d. First pre-operation area 35F1
Measure K on the display unit 91e First work detent width TD1K
Is displayed on the display unit 91f, and the measurement second front operation region 35F2K is displayed on the display unit 91g.
The second work detent width TD2K measured in 1 h is displayed on the display unit 91.
At i, the measurement second post-operation area 35R2K is digitally displayed by a numerical value indicating the size of each measurement operation area and each measurement detent width.

The judgment display means 95 is an operation range display means 91.
Of the plurality of display sections 91a to 91i and the main display section 9
6, the operation area 11FK before measurement of the travel mission detection device 50, the operation area 11RK after measurement, the measurement traveling detent width RDK, the measurement first pre-operation area 35F1K of the work mission detection device 55, the measurement first post-operation. Area 35R1K,
Measurement first work detent width TD1K, measurement second pre-operation area 3
5F2K, the measurement second post-operation area 35R2K, and the measurement second work detent width TD2K are all outside the set operation area set by the operation area setting means 81 and the set detent width set by the detent width setting means 82. If there is not, the main display unit 96 displays an inspection pass display 98 (FIG. 11 (A)) indicating this. Pre-measurement operation area 11FK, post-measurement operation area 11RK, measurement traveling detent width RDK, work mission detection apparatus 55 measurement first pre-operation area 35F1K, measurement first post-operation area 35R1K, measurement first work Detent width TD1
K, measurement second pre-operation area 35F2K, measurement second post-operation area 3
5R2K, at least one of the measurement second work detent width TD2K is out of the set operation area set by the operation area setting means 81, the set detent width set by the detent width setting means 82, main display The inspection failure display 99 (FIG.
1 (b) is displayed. At this time, further disabling the measurement operation area and the display portions 91a to 91i that digitally display the measurement detent width are discolored from a white background to a red background, and the inspection failure and the inspection item of the failure are displayed. indicate.

That is, in this inspection apparatus, the inspection is performed as follows.

That is, first, the type in which the tag attached to the tractor to be inspected is described is input to the inspection device body 80 by the type input means 75, and the switch state detection means 70 is set in the engine starter 40.
Connected to the operation circuit 41. The stroke sensor 63 of the operation position detecting means 60 is fixed to the rope 8, and the detection object 66 of the operation position detecting means 60 is fixed to the main shift lever 11.

After that, the main shift lever 11 is operated to the reverse position R of the forward / backward operation path 33, and the start switch 86 is operated to give a measurement command to the inspection device main body 80.
The main transmission lever 11 is operated toward the neutral position N while the key switch device 42 is operated to the engine start position ST and maintained in the on state. At this time, the PTO lever 35 is operated to the first neutral position N1 or the second neutral position N2, and the detection switch 56 of the work mission detection device 55 is turned on. As the main shift lever 11 is operated, the engine 3
When the engine is started, the main transmission lever 11 is stopped at its operating position, and the key switch device 42 is turned off to switch the engine 3 to the OFF position. At this time, the inspection device main body 80 determines the rear operation position PR of the main shift lever 11 based on the detection operation position by the stroke sensor 63 of the operation position detection means 60 and the detection result of the switch on by the switch state detection means 70. Measure and store this. At this time, the detection data 5 ms before the start of the output of the current sensor when the engine is started is used for measurement.

Next, after the main transmission lever 11 is operated to the first speed position F1 on the forward / reverse operation path 33, the key switch device 4
The main shift lever 11 is operated toward the neutral position N while the engine 2 is operated to the engine start position ST and maintained in the engaged state. Also at this time, the PTO lever 35 is moved to the first neutral position N1.
Alternatively, the detection switch 56 of the work mission detection device 55 is turned on by operating to the second neutral position N2. When the engine 3 is started with the operation of the main shift lever 11,
The main transmission lever 11 is stopped at its operating position, and the key switch device 42 is turned off to switch the engine 3 to the OFF position. At this time, the inspection device body 80 is
The front operation position PF of the main shift lever 11 is measured based on the operation position detected by the stroke sensor 63 of the operation position detection means 60 and the detection result of the switch on by the switch state detection means 70, and this is stored. However,
At this time, the detection data 5 ms before the start of the output of the current sensor when the engine is started is used for measurement.

Next, the main shift lever 11 is operated to the neutral position N of the forward / backward operation path 33, and then the detent confirmation switch 87 is operated to give a detent width measurement command to the inspection device main body 80, and the detent is measured. While the confirmation switch 87 is being operated, the detent mechanism 28 moves the main transmission lever 1
The main transmission lever 11 is pressed against the front end and the rear end of the operating range for positioning 1 at the neutral position N. Then,
The inspection device main body 80 measures and stores the measured traveling detent width RDK based on the detected operation position by the operation position detection means 60 and the command of the measurement position when the main transmission lever 11 is stopped. After that, the operation of the detent confirmation switch 87 is released, and the inspection of the traveling mission detection device 50 and the traveling speed change operation device is completed.

Thereafter, the detection object 66 of the operation position detecting means 60 is changed from the main shift lever 11 to the PTO lever 35, and the work mission detecting device is operated in the same manner as the inspection of the traveling mission detecting device 50 and the traveling shift operating device. 5
5 and the work speed change operation device are inspected. However, in this case, the main transmission lever 11 is operated to the neutral position N and the detection switch 51 of the traveling mission detection device 50 is turned on. An inspection for reciprocating the PTO lever 35 between the reverse rotation position G and the low speed position L, and an inspection for reciprocating operation between the low speed position L and the high speed position H are performed.

When the inspection of the work mission detection device 50 and the work speed change operation device is completed, the inspection device main body 80 causes the travel mission detection device 50 and the travel speed change operation device to operate after measurement 11RK, before operation 11FK, and during measurement travel. Detent width RDK, work mission detection device 55 and work speed change layer device measurement first pre-operation area 35F1K, measurement first post-operation area 35R1K, measurement first work detent width TD1K,
Measurement second pre-operation area 35F2K, measurement second post-operation area 35R
2K, each of the measurement second work detent width TD2K is calculated, and it is determined whether or not each measurement operation area and each measurement detent width is out of the set operation area and set detent width, and a display command is output to the display device 90. To do.

As shown in FIG. 11A, the display device 90
The operation area display means 91 digitally displays each measurement operation area and each measurement detent width on the plurality of display portions 91a to 91i. Furthermore, when the respective measurement operation areas and the respective measurement detent widths do not deviate from the set operation areas and the set detent widths, the judgment display means 95 of the display device 90 causes the display unit 90 to display the plurality of display portions 91.
a) to 91i and the main display unit 96 display an inspection pass as shown in FIG. 11A, and at least one of each measurement operation area and each measurement detent width is out of the setting operation area and the setting detent width. In addition, the judgment display means 95 of the display device 90 includes the plurality of display sections 91a to 91i and the main display section 9.
6 indicates that the inspection has failed as shown in FIG.

By operating the reset switch 88 both during and after the inspection,
The detection data up to that point is discarded and the inspection can be started from the beginning.

[Other Embodiments] Traveling mission detection device 5
0 and the traveling speed change operation device are inspected by operating the main speed change lever 11 on the forward / backward operation path 33 as in the above embodiment, or by operating on the forward operation path 32. .

In addition to the detection device for detecting the shift lever 11 and the PTO lever 35, a detection device for detecting an operation lever for operating various devices other than the transmission and a detection device for detecting an operation pedal. The present invention can be applied to the case of an inspection device for inspecting the device. Therefore, the speed change lever 11, the PTO lever 35, various operation levers, operation pedals, etc. are collectively referred to as the operation tools 11, 35.
I call it.

As in the above embodiment, the stroke sensor 6
In addition to adopting a rotary encoder as No. 3, a potentiometer may be adopted.

[Brief description of drawings]

[Figure 1] Side view of the entire tractor

FIG. 2 is a cross-sectional view of a traveling speed change operation device.

FIG. 3 is a plan view showing a positioning groove.

FIG. 4 is a cross-sectional view of a work speed change operation device.

FIG. 5 is a sectional view of a traveling mission detection device.

FIG. 6 is a sectional view of a work mission detection device.

FIG. 7 is a circuit diagram of an engine starting device.

FIG. 8 is a schematic diagram of an inspection device.

FIG. 9 is a perspective view of operation position detection means.

FIG. 10 is an explanatory diagram showing a usage procedure of the operation position detecting means.

FIG. 11 is an explanatory diagram of display means.

FIG. 12 is an explanatory diagram showing the definition of an operation area.

[Explanation of symbols]

11,35 Operation tool 33, 39 Operation route 50,55 detector 51,56 Detection switch 53,58 rotating cam 60 Operation position detecting means 66 Object to be detected 70 Switch status detection means 83 Operation range measuring means 85 Judgment means 91 Operation range display means 95 Judgment display means

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3D040 AA02 AA03 AA10 AA13 AA28                       AA40 AB04 AC29 AC42 AC45                       AC63 AE19 AF07

Claims (5)

[Claims] 1. A detection state of a detection device provided with a rotary cam interlocking with an operation tool which can be manually operated, and a detection switch equipped with a detection switch which is operated by the rotation cam to detect an operation position of the operation tool. An inspection device for inspecting, wherein an operation position detecting means for detecting an operation position on an operation path of the operation tool, a switch state detecting means for detecting a state of the detection switch, the operation position detecting means and the switch state. An inspection apparatus comprising operation area measuring means for measuring an operation area of an operation tool in which a detection switch is in a detection state based on a detection result by the detection means. 2. The detection device is a detection device for detecting a neutral position of an operating tool for switching the transmission between a transmission state and a neutral state by a detection switch. The inspection device according to claim 1, wherein the inspection device is configured to measure the operation range of the operation tool in the detection state. 3. The inspection apparatus according to claim 1, further comprising operation area display means for displaying a measurement operation area by the operation area measurement means. 4. A determination means for determining whether or not the measurement operation area by the operation area measurement means is out of the set operation area, and a determination display means for displaying the determination result by this determination means. The inspection apparatus according to any one of 1 to 3. 5. The operation position detecting means includes a stroke sensor that is provided with a detection object that is detachable from an operation tool and that can be moved toward and away from the operation tool. The inspection device according to claim 1, wherein the inspection device is configured to detect an operation position on an operation path of the operation tool.