CN100480555C - Operating device of operation vehicle - Google Patents

Abstract

Operating device for operation vehicle of the invention includes a gear-box, a first man-made operating element, a first joining element, a first joining end, a first operating shaft, a first moving element, a first cam, a first shifting gear, a sencond joining element, a second joining end, a second operating shaft, a second moving element, a second cam, a second shifting gear, in which, the first joining element is rotatablely supported on the dead axle supported on the operation vehicle; the sencond joining element is supported on the dead axle, in parallel with the first joining element on the position of the rotary shaft; the second joining end extrudes from the first joining end to the position leaving the operation vehicle; the first man-made operating element is selectively linking with the first joining element and the sencond joining element.

Description

The operation equipment of operating vehicle

Technical field

The present invention relates to a kind of operation and carry out the operation equipment of the operating vehicle of multi-change speed operation by service axis.

Background technique

In the operating structure of this operating vehicle, for example, in the two-stage of can advancing, retreat under the situation of the variable speed operations more than three grades such as one-level, be (the special fair 3-8427 communique) that carries out variable speed operation by service axis to the slide of axis direction.

In above-mentioned structure, because number of steps of speeds is many more, the operation amount of service axis on its axis direction is just long more, from the outstanding shaft portion lengthening of gearbox, so the size of the gearbox integral body on the direction of operating strengthens, causes gearbox to maximize.

Summary of the invention

The objective of the invention is to not cause gearbox to carry out the operation equipment of the operating vehicle of the variable speed operation more than three grades with maximizing.

The operation equipment of operating vehicle involved in the present invention comprises:

Gearbox is taken in the speed change gear of above-mentioned operating vehicle;

The 1st manual operation parts are used for selecting desirable one from a plurality of shift position;

The 1st coupling member is supported in the above-mentioned operating vehicle, can transmit the steering force from above-mentioned the 1st manual operation parts;

The 1st connects the end, links with above-mentioned the 1st coupling member interlock;

The 1st service axis is supported on the above-mentioned gearbox, can rotate around the 1st axle center, and support above-mentioned the 1st connection end outside gearbox;

The 1st moving member can be at the direction top offset along above-mentioned the 1st axle center;

The 1st cam becomes above-mentioned the 1st moving member in the displacement on above-mentioned the 1st axis direction the rotation transformation of above-mentioned the 1st service axis around above-mentioned the 1st axle center;

The 1st change gear can be by the displacement with above-mentioned the 1st moving member butt;

The 2nd coupling member is supported in the above-mentioned operating vehicle, can transmit the steering force from above-mentioned the 1st manual operation portion machine;

The 2nd connects the end, links with above-mentioned the 2nd coupling member interlock;

The 2nd service axis is supported on the above-mentioned gearbox, can rotate around the 2nd axle center, and support above-mentioned the 2nd connection end outside gearbox;

The 2nd moving member can be at the direction top offset along above-mentioned the 2nd axle center;

The 2nd cam becomes above-mentioned the 2nd moving member in the displacement on above-mentioned the 2nd axis direction the rotation transformation of above-mentioned the 2nd service axis around above-mentioned the 2nd axle center;

The 2nd change gear can be by the displacement with above-mentioned the 2nd moving member butt.

Above-mentioned the 1st coupling member rotatably is supported on the stationary axle, and this stationary axle is supported in the above-mentioned operating vehicle; Above-mentioned the 2nd coupling member is to be supported on the said fixing axle with above-mentioned the 1st coupling member and the position that is listed on the running shaft; The above-mentioned the 2nd connects the end is projected into the position of leaving above-mentioned operating vehicle from above-mentioned the 1st connection end; Above-mentioned the 1st manual operation parts selectively link with the some interlock of above-mentioned the 1st coupling member and above-mentioned the 2nd coupling member.

According to this structure, because the rotation motion that constitutes service axis changes the cammingly that move of moving member at axis direction into, so can not make from the outstanding shaft portion of gearbox elongated because of variable speed operation.

And, constituting under the situation of cammingly, owing to reasons such as operation amounts, number of steps of speeds on service axis is restricted, but also can carry out multistage variable speed operation by equipping a plurality of service axis, and,, can not cause operability to reduce because of equipping a plurality of service axis owing to select to carry out the operation of these each service axis by the connection of operation piece.

Therefore, neither can cause the maximization of gearbox, can carry out the variable speed operation more than three grades again.

Description of drawings

Fig. 1 is the left side view of tractor integral body.

Fig. 2 is the right side view of tractor integral body.

Fig. 3 is the plan view of tractor integral body.

Fig. 4 is the stereogram of the tractor integral body seen from the right front.

Fig. 5 is the stereogram of the tractor integral body seen from the left back.

Fig. 6 is the roughly whole left side view of tractor.

Fig. 7 is the major component stereogram of the configuration of expression motor and gearbox etc.

Fig. 8 is the vertical profile rear view of gearbox.

Fig. 9 is the vertical profile rear view of gearbox major component.

Figure 10 is the vertical profile side view of gearbox.

Figure 11 is the vertical profile rear view of the gearbox major component of exportable auxiliary power ground formation.

Figure 12 is the vertical profile side view of the gearbox of exportable auxiliary power ground formation.

Figure 13 is the cross-sectional plan view of gearbox major component after launching.

Figure 14 is the stereogram of the major component of expression variable speed operation structure.

Figure 15 is the left side view of the major component of expression variable speed operation structure.

Figure 16 is the plan view of the major component of expression variable speed operation structure.

Figure 17 is the vertical profile plan view of the major component of expression main transformer speed operating structure.

Figure 18 is the vertical profile plan view of the major component of vice variable speed operation structure.

Figure 19 is the vertical profile plan view of the major component of vice variable speed operation structure.

Figure 20 is the vertical profile rear view of the major component of expression sealing configuration.

Figure 21 is the vertical profile rear view of the major component of the supporting structure of the accessory drive system of expression gearbox.

Figure 22 is the vertical profile rear view of the major component of the decomposing state of expression gearbox.

Figure 23 is the vertical profile side view at gearbox rear portion.

Figure 24 is the stereogram of the major component of expression configuration of operating oil tank and supporting structure.

Figure 25 is the stereogram of the major component of the maintaining structure of expression air cleaner.

Figure 26 quickens the stereogram of the major component of operating structure for the expression of seeing from the right back.

Figure 27 quickens the stereogram of the major component of operating structure for the expression of seeing from the left back.

Figure 28 quickens the side view of the major component of operating structure for expression.

Figure 29 quickens the vertical profile side view of the major component of operating structure for expression.

Figure 30 quickens the exploded perspective view of the major component of operating structure for expression.

Figure 31 quickens the cross-sectional plan view of the major component of operating structure for expression.

Figure 32 is the stereogram of the major component of the configuration of expression lifting jar and elongated boom and supporting structure.

Embodiment

Shown in Fig. 1 as the left surface of the tractor integral body of an example of operating vehicle, its whole right flank shown in Fig. 2, its whole plane shown in Fig. 3, the whole solid of seeing from the right front shown in Fig. 4, the whole solid of seeing from the left back shown in Fig. 5, the integral left side of illustrating shown in Fig. 6, this tractor comprises: the vehicle frame 1 that is formed the frame shape by band steel etc., what be formed on its rear portion one side takes Drive Section 2, lift-launch is at the motor 3 of the front portion of vehicle frame 1, be attached at the gearbox that is also used as framework 4 of the rearward end of vehicle frame 1, be provided in the front-wheel 5 about the front portion of vehicle frame 1, be provided in gearbox 4 about trailing wheel 6, be provided in the hydraulic up-down cylinder 7 of gearbox 4 tops, and the pairing left and right elongated boom 8 that moves up and down of the action by this lifting jar 7 etc., at its rear portion, can link the outer disc type excavator of figure via link mechanism 9 grades, apparatus for work such as rotary tillage device or trailer etc.

Take Drive Section 2 and take platform 10, the steering wheel 11 of the front-wheel 5 about manipulation, and the departure direction dish 11 predetermined distances driving that is provided in the rear formation such as 12 of attending a banquet by what be laid on vehicle frame 1 rear portion one side.

As Fig. 1～shown in Figure 9, motor 3 is the horizontal arrangement type diesel engine of carrying in the front portion of vehicle frame 1, the posture that its integral body is stretched out towards the car body left with its output shaft 13 is positioned at and is higher than the position of taking platform 10, is delivered to the input that upper front end had of gearbox 4 with on the 1st transmission shaft 16 from the power of motor 3 via pedal-type transmission device 14 and many plates of dry type shape main clutch 15.

Shown in Fig. 1～5 and Fig. 8～11, in the gearbox 4, as driving transmission agent 27, in gear type is housed the main transformer quick-mounting put 18, the secondary speed-changing device 20 of gear type, trailing wheel differential motion 22, locking framework 24, and driving gear 26 etc., wherein, the main transformer quick-mounting puts 18 based on being provided in the operation of taking in the Drive Section 2 main shift lever (example of operation piece) 17 of driving 12 the left of attending a banquet, switch to the transmission of power that will not be delivered on the 1st transmission shaft 16 to the set about neutral condition of a side of transmission direction, speed change becomes to retreat the fallback state that the low speed and reverse power of usefulness transmits, speed change becomes to be suitable for the low-speed forward state that the low speed turn power of rotary tillage operation etc. is transmitted, speed change becomes to be suitable for rotating the middling speed forward travel state that the middling speed turn power of digging operation etc. is transmitted, and speed change becomes to be suitable for the state that advances at utmost speed that the high speed turn power of towing operation etc. is transmitted, secondary speed-changing device 20 is based on the operation of the secondary speed change lever that is provided in main shift lever 17 rears (example of operation piece) 19, switch to the power the main transformer quick-mounting not put after 18 speed changes that produce to the transmission direction neutral condition that a side transmits of setting about, the lower-speed state that speed change becomes low speed power to transmit, and the speed change fast state that becomes high speed power to transmit, on the differential shaft (example of transmission shaft) 21 about power after the speed change that differential motion 22 produces secondary speed-changing device 20 arrives with the state transfer of allowing its differential rotation, locking framework 24 is taken in the Drive Section 2 operation of trampling of driving 12 the bottom-right differential locking pedal 23 of attending a banquet based on being provided in, from allowing that trailing wheel switches to the differential lock state of prevention with the differential relieving state of the left and right difference moving axis 21 of differential motion 22, driving gear 26 will arrive on the corresponding rear axle shaft (example of transmission shaft) 25 from the transmission of power of left and right difference moving axis 21.

Shown in Fig. 6～12, gearbox 4 constitutes and can be separated into four parts on the left and right directions of car body, by being positioned at central taking in capacious the 1st housing section 28 and take in the 2nd little housing section 29 of volume about it, will its upper front end with about towards the 1st transmission shaft 16 that is equipped with of posture be supported on its left end one side from the 1st housing section 28 to the outstanding state of left, the main transformer quick-mounting put 18 and secondary speed-changing device 20 and trailing wheel be housed in the accommodation space that forms between the 1st housing section 28 and the 2nd housing section 29 with differential motion 22, the differential shaft 21 in locking framework 24 and left side and driving gear 26 are housed in the accommodation space that forms between the 3rd housing section 30 in the 1st housing section 28 and left side, and the rear axle shaft 25 in left side is supported on the state that stretches out to left from the 3rd housing section 30 by the 1st housing section 28 and the 3rd housing section 30, the differential shaft 21 on right side and driving gear 26 are housed in the accommodation space of the formation between the 4th housing section 31 on the 2nd housing section 29 and right side, and be supported on from the 4th housing section 31 to the right-hand state that stretches out by the 2nd housing section 29 and the 4th housing section 31 rear axle shaft 25 with the right side, and, the rear axle shaft 25 about having and the carry-out part 32 of driving gear 26 are positioned at its aftermost upper/lower positions, have the first half of the 1st transmission shaft 16 grades, with the closer to front end one side that has the 1st transmission shaft 16, the inclination attitude that raises is got in the front portion that is positioned at the top, is equipped to be positioned to be higher than the position of taking platform 10.

And, bottom one side of the 4th housing section 31 is attached at bottom one side of the 1st housing section 28 with the bottom one side bolt that forms the 2nd housing section 29 in a narrow margin, so, with for example in the bottom of the 1st housing section 28 side, be formed for the connecting area of special use that bolt links bottom one side of the 2nd housing section 29 up and down, with be used for the connecting area of special use that bolt links bottom one side of the 4th housing section 31, the bolt situation that links bottom one side of bottom one side of the 2nd housing section 29 and the 4th housing section 31 is compared respectively, can suppress bloating of bottom belly one side in the gearbox 4, can make the ground of gearbox 4 highly higher.

As Fig. 8～shown in Figure 19, the 1st service axis 35 is equipped with on the top of gearbox 4, the 2nd service axis 38, the 3rd service axis 41, and the 4th service axis 44 etc., wherein, the 1st service axis 35 is via the 1st shift fork (example of moving member) 34, at going-back position R1, R2 and low-speed forward position F1, slide main transformer quick-mounting is put 18 the 1st change gear 33 between the F2, the 2nd service axis 38 is via the 2nd shift fork (example of moving member) 37, at middling speed progressive position F3, the F4 and the position F5 that advances at utmost speed, slide main transformer quick-mounting is put 18 the 2nd change gear 36 between the F6, the 3rd service axis 41 is via the 3rd shift fork (example of moving member) 40, the change gear 39 of slide secondary speed-changing device 20 between low-speed position L and high speed position H, the 4th service axis 44 is via the 4th shift fork 43, in locked position with remove the gear shift pawl 42 of slide locking framework 24 between the position.

The 1st service axis 35 is connected on the main shift lever 17 connecting the state of operation of selecting by the operation of main shift lever 17 via the 1st coupling mechanism L1, the 2nd service axis 38 is connected on the main shift lever 17 connecting the state of operation of selecting by the operation of main shift lever 17 via the 2nd coupling mechanism L2, when by this connection, main shift lever 17 is operated neutral position N along the main transformer speed with roughly H type formation on guide rod 45 with guide slot 45A, going-back position R1, R2, low-speed forward position F1, F2, middling speed progressive position F3, F4, position F5 perhaps advances at utmost speed, during F6, the main transformer quick-mounting put 18 with these operating positions be switched to neutral condition accordingly, fallback state, the low-speed forward state, the middling speed forward travel state, state perhaps advances at utmost speed.

The 3rd service axis 41 is connected on the secondary speed change lever 19 via the 3rd coupling mechanism L3 operation, when by this connection, secondary speed change lever 19 is operated neutral position N along the secondary speed change that straight line shape is formed on the guide rod 45 with guide slot 45B, low-speed position L, perhaps during high speed position H, secondary speed-changing device 20 is switched to neutral condition, lower-speed state, perhaps fast state accordingly with these operating positions.

The 4th service axis 44 is connected on the differential locking pedal 23 via the 4th coupling mechanism (not shown) operation, when by this connection, when carrying out the trampling of differential locking pedal 23, locking framework 24 switches to lock state from relieving state, when removed differential lock end pedal 23 trample operation the time, locking framework 24 switches to relieving state from lock state.

In passing, set for respectively: the speed of the 1 fast position F1 that advances of low-speed forward state that the rotary tillage operation usefulness of ploughing and weeding operation etc. occurs being used to being rotated is about 1.1km/h, the speed that the 2 fast position F2 that advance of the state that advances at utmost speed that the ploughing and weeding operation uses occur being used to being rotated is about 1.7km/h, the speed that the 3 fast position F3 that advance of the low-speed forward state that the disc type digging operation of disc type digging operation etc. uses occur being used to carrying out is about 3.8km/h, the speed of the 4 fast position F4 that advance of the state that advances at utmost speed that appearance disc type digging operation is used is about 6.0km/h, the speed that the 5 fast position F5 that advance of the low-speed forward state that the towing operation of towing operation etc. uses occur being used to carrying out is about 13.8km/h, the speed of the 6 fast position F6 that advance of the state that advances at utmost speed that the appearance towing operation is used is about 21.7km/h, the speed that retreats 1 fast position R1 that the lower-speed state of usefulness occurs retreating is about 2.8km/h, and the speed that retreats 2 fast states that the fast state of usefulness occurs retreating is about 4.3km/h.

As Fig. 2～4, Fig. 8, Fig. 9 and shown in Figure 11, between the 2nd housing section 28 and the 3rd housing section 30, and the 2nd between housing section 29 and the 4th housing section 31, contain the side brake 47 of wet multi-plate shape respectively, based on the operation of trampling of the brake petal 46 of the pairing left and right correspondence that is provided in the right front portion of taking Drive Section 2, will give corresponding differential shaft 21 with the corresponding braking force of its operation amount.

As Fig. 8, Fig. 9 and shown in Figure 11, on the 3rd housing 30 and the 4th housing 31, be equipped with the service axis 48 of the side brake 47 of brake operating correspondence, between shaft supporting part 30A, the 31A of these service axis 48 and the 3rd housing section 30 that supports and the 4th housing section 31, can add oil sealing 49 from the outside of gearbox 4 with loading and unloading.

As shown in figure 13, between shaft supporting part 28A, the 28B of above-mentioned the 1st service axis 35 and the 2nd service axis 38 and the 1st housing section 28 that supports, also add oil sealing 49, and, though it is not shown, but between the shaft supporting part of above-mentioned the 3rd service axis 41 and the 4th service axis 44 and the 1st housing section 28 that supports, also respectively can from the outside loading and unloading of gearbox 4 add oil sealing 49.

As Fig. 8 and shown in Figure 20, between the shaft supporting part 30B of the rear axle shaft 25 in left side and the 3rd housing section 30 that its foreign side's one side is supported, and between the shaft supporting part 31B of the rear axle shaft 25 on right side and the 4th housing section 31 that its foreign side's one side is supported, respectively and be provided with two oil sealings 50,51, constitute can be from the outside loading and unloading of gearbox 4 for the oil sealing 51 that is provided in car body foreign side one side in these oil sealings 50,51.

And, the outside one end with respect to shaft supporting part 30B, the 31B of rear axle shaft 25 on the 3rd housing section 30 and the 4th housing section 31 is separately installed with cover 52, prevent muddy water etc. adhere to or immerse about rear axle shaft 25 and shaft supporting part 30B, 31B with respect to these between.

As Fig. 7～shown in Figure 13, the 1st housing section 28 forms more deeply, with have size for take in the main transformer quick-mounting put 18 and secondary speed-changing device 20 and trailing wheel with the volume of taking in of the roughly integral body of differential motion 22, and be formed with the power carry-out part 28C that power output unit 53 can be installed in the portion in its back-end.

That is to say, gearbox 4 can change specification and become the 1st specification and the 2nd specification, described the 1st specification for example is that disc type digging operation or towing operation etc. are such, is that object is (with reference to Fig. 8～Figure 10) only not need from gearbox 4 output operations with the user of the operation of power, described the 2nd specification for example be rotary tillage operation etc. like that, to carry out need be object with the user of power from gearbox 4 output operations, equipped power output unit 53 (with reference to Figure 11, Figure 12), in the 1st specification, the power output that sealing is formed on the power carry-out part 28C is attached on the power carry-out part 28C with cover 54 bolts of opening 28a.

As shown in figure 12, in the 2nd specification, the power output unit 53 of equipment constitutes, can be supported on bolt via the 1st bearing 56 and a pair of oil sealing 57,58 to the pto 59 that apparatus for work etc. carries out transmission is attached on the power output housing 55 of the roughly tubular on the power carry-out part 28C, and umbrella gear 60 and the 2nd bearing 61 are installed on the end of gearbox 4 one sides on its pto 59.

And the oil sealing 58 that is provided in car body foreign side one side in a pair of oil sealing 57,58 constitutes and can load and unload from the outside of gearbox 4.

Fig. 8, Fig. 9, Figure 11, Figure 13 and shown in Figure 21, the 2nd housing section 29 is to have the 1st shaft supporting part 29A of the right part of supporting the 1st transmission shaft 16, support the 2nd shaft supporting part 29B～the 5th of each right part of the 2nd transmission shaft 62～the 5th transmission shaft 65 that is equipped with abreast with the 1st transmission shaft 16 and support axial region 29E, the 6th shaft supporting part 29F of the left part of the differential shaft 21 on support right side, and the degree of the 7th shaft supporting part 29G of the left part of the rear axle shaft 25 on support right side, form by near the position that is set in each shaft supporting part 29A～29G more shallowly, with each 16,21,25, the lid shape that the defiber PL of 62～65 quadratures separates with the 1st housing section 28, and, front and back at an upper portion thereof, have releasably can be in the 2nd specification from the 1st transmission shaft 16 to supporting portion 67 that the accessory drive system 66 of pto 59 transmissions supports, these supporting portions 67 are to have two separation structures that first bolt is attached at the 1st supporting part 68 on the 2nd housing section 29 and is attached at the 2nd supporting part 69 on the 2nd housing section 29 with the 1st supporting part 68 bolts after it links.

As shown in figure 12, the accessory drive system of equipping in the 2nd specification 66 constitutes the shaft drive formula, with be provided in respect to the 1st transmission shaft 16 and the 2nd transmission shaft 62～perpendicular attitude such as the 5th transmission shaft 65 the 2nd transmission shaft 62～the 5th transmission shaft 65 etc. above the two ends of attachment driving shaft 70, be equipped with umbrella gear 71,72, on the supporting portion 67 before and after its attachment driving shaft 70 is supported on via bearing 73, one distolateral umbrella gear 71 is engaged on the umbrella gear 74 of equipment on the 1st transmission shaft 16, and another distolateral umbrella gear 72 is engaged on the umbrella gear 60 of power output unit 53.

As Figure 11 and shown in Figure 12, in the 2nd specification, between the 1st transmission shaft 16 and umbrella gear 74, add the assisted clutch 75 that switches to the drive state of pto 59 from the 1st transmission shaft 16, have the 5th service axis 78 on the top of the 1st housing section 28 and the 2nd housing section 29, via the 5th shift fork 77 shift component 76, the 5 service axis 78 of its assisted clutch 75 of slide between transmission on positi and the transmission off position only in the 2nd specification, be connected in via the outer coupling mechanism of figure the driving of taking in the Drive Section 2 attend a banquet 12 about on the assisted clutch bar 79 of outfit (with reference to Fig. 1, Fig. 2 and Fig. 4).

Though omitted diagram, between the shaft supporting part of the 5th service axis 78 and the 1st housing section 28 that supports and the 2nd housing section 29, also can add oil sealing 49 with loading and unloading from the outside of gearbox 4.

That is to say, each oil sealing 49,51,58 beyond the oil sealing 50,57 of interior side one side can not decompose gearbox 4 and change from the outside of gearbox 4 at an easy rate, in addition, sealed department by making the reference level OS below that is positioned at gear box oil is a dual structure, when the oil sealing 51,58 in the outside is changed, need not to bleed off the operation of gear box oil, its result can promptly handle the loss of oil sealing 49,51,58.

As Fig. 8～shown in Figure 13, in the inside of gearbox 4, left end one side of the 1st transmission shaft 16 is equipped with the wide cut gear 80 with the rotation of the 1st transmission shaft 16 one, puts on 18 to the main transformer quick-mounting from the transmission of power of these wide cut gear 80 outputs.

On the 2nd transmission shaft 62 that is equipped with below near the 1st transmission shaft 16, from its left end one side, with with the 2nd transmission shaft 62 one rotatably the chimeric state of spline be equipped with successively: low-speed forward is with small diameter gear 81, all the time with the 1st driving gear 82 of wide cut gear 80 engagement, middling speed advance with in diameter gear 83, and advance at utmost speed with gear wheel in large diameter 84, be positioned at below the 1st transmission shaft 16 and the 2nd transmission shaft 62 with its near the 3rd transmission shaft 63 that is equipped with on, from its left end one side, with with the 3rd transmission shaft 63 one rotatably the chimeric state of spline have successively: the 1st change gear 33, slidably be displaced to going-back position R1 with 80 engagements of wide cut gear, R2, low-speed forward position F1 with small diameter gear 81 engagements, F2 is with these gears 80,81 all out of mesh neutral positions; The 2nd change gear 36 slidably is displaced to the middling speed progressive position F3, the F4 that mesh with middle diameter gear 83, with advance at utmost speed position F5, the F6 of gear wheel in large diameter 84 engagements, with these gears 83,84 all out of mesh neutral position N; And the 2nd driving gear 85.And, by the 2nd transmission shaft the 62, the 3rd transmission shaft 63 and be equipped in each gear 33,36,81～85 on these transmission shafts 62,63 and constitute the main transformer quick-mounting and put 18.

Be positioned on the 4th transmission shaft 64 that is equipped with near the 3rd transmission shaft 63 below the 3rd transmission shaft 63, from its left end one side, change gear 39 is equipped with successively with state with the rotation of the 4th transmission shaft 64 one, all the time with the 3rd driving gear 86 of the 2nd driving gear 85 engagement, on the 5th transmission shaft 65 that is equipped with below near the 4th transmission shaft 64, from its left end one side, be equipped with successively with state: large diameter low speed gear 87 with the rotation of the 5th transmission shaft 65 one, all the time with 4th driving gear 89 of trailing wheel with the minor diameter of input gear 88 engagements of differential motion 22, and the high gear 90 of middle diameter, change gear 39 constitutes the low-speed position L that slidably is displaced to low speed gear 87 engagements, with the high speed position H of high gear 90 engagements, with these gears 87,90 all out of mesh neutral position N.And, constitute secondary speed-changing device 20 by the 4th transmission shaft the 64, the 5th transmission shaft 65 and each gear 39,86,87,89,90 of being equipped on these transmission shafts 64,65.

On the differential shaft 21 about the outfit of the rear of the 5th transmission shaft 65, be equipped with trailing wheel differential motion 22, and form the 5th driving gear 91 of minor diameter, driving gear 26 engagements on the rear axle shaft 25 about the rear was equipped with of the differential shaft 21 about being entrenched in spline all the time.

By above-mentioned structure, gearbox 4 is constituted under the situation of the 1st specification, as Fig. 8～Figure 10, Figure 13 and shown in Figure 22, the posture that the 1st housing section 28 is positioned at the top with the parting surface of itself and the 2nd housing section 28 is placed on the assembly or fitting table etc., from its parting surface one side, order assembling with regulation: the 1st transmission shaft 16 of having equipped wide cut gear 80 and umbrella gear etc., the main transformer quick-mounting is put each transmission shaft 62 of 18,63 and each gear 33,36,81～85, put each service axis 35 of 18 with respect to the main transformer quick-mounting, 58 and each shift fork 34,37, each transmission shaft 64 of secondary speed-changing device 20,65 and each gear 39,86,87,89,90, the 3rd service axis 41 and the 3rd shift fork 40 with respect to secondary speed-changing device 20, and trailing wheel differential motion 22 etc., and after the affirmation of having carried out these assemblings and action, the 2nd housing section 29 is bonded on its parting surface, bolt links its top one side, on the 2nd housing section 29, assembling has been assembled differential shaft 21 with the order of regulation, rear axle shaft 25, driving gear 26, and the 4th housing section 31 of side brake 47 and its service axis 48 etc., its top one side bolt is attached on the 2nd housing 29, and the bottom one side bolt of its underpart one side with the 2nd housing section 29 is attached on the 1st housing section 28, afterwards, make its upset, on the 1st housing section 28, assembling has been assembled differential shaft 21 with the order of regulation, rear axle shaft 25, driving gear 26, the gear shift pawl 42 of locking framework 24, and the 3rd housing section 30 of side brake 47 and its service axis 48 etc., thereby can assemble fairly simplely.

In addition, gearbox 4 is being constituted under the situation of the 2nd specification, as Figure 11～shown in Figure 13, the posture that the 1st housing section 28 is positioned at the top with the parting surface of itself and the 2nd housing section 29 is placed on the assembly or fitting table etc., from its parting surface one side, order assembling main transformer quick-mounting with regulation is put each transmission shaft 62 of 18,63 and each gear 33,36,81～85, put each service axis 35 of 18 with respect to the main transformer quick-mounting, 38 and each shift fork 34,37, each transmission shaft 64 of secondary speed-changing device 20,65 and each gear 39,86,87,89,90, the 3rd service axis 41 and the 3rd shift fork 40 with respect to secondary speed-changing device 20, trailing wheel differential motion 22, and the pto 59 of power output unit 53 and umbrella gear 60 etc., and after the affirmation of having carried out these assemblings and action, the 1st transmission shaft that has the shift component 76 etc. of umbrella gear 74 and assisted clutch 75 with wide cut gear 80 has been assembled in assembling with the order of regulation on its parting surface, the 5th service axis 78 and the 5th shift fork 77 with respect to its shift component 76, and the attachment driving shaft 70 of accessory drive system 66 and umbrella gear 71, the 2nd housing section 29 of 72 grades, its upper bolt is linked, on the 2nd housing section 29, assembling has been assembled differential shaft 21 with the order of regulation, rear axle shaft 25, driving gear 26, and the 4th housing section 31 of side brake 47 and its service axis 48 etc., its top one side bolt is attached on the 2nd housing section 29, and the bottom one side bolt of its underpart one side with the 2nd housing section 29 is attached on the 1st housing section 28, afterwards, make its upset, on the 1st housing section 28, assembling has been assembled differential shaft 21 with the order of regulation, rear axle shaft 25, driving gear 26, the gear shift pawl 42 of locking framework 24, and the 3rd housing section 30 of side brake 47 and its service axis 48 etc., and carry out the bolt binding, thereby can assemble fairly simplely.

And, in arbitrary specification of the 1st specification or the 2nd specification, put the non-drive state that 18 the 1st change gear 33 and the 2nd change gear 36 are positioned at neutral position N even be in the main transformer quick-mounting in the inside of gearbox 4, under the state that main clutch 15 is connected, by power from motor 3, be positioned at the small diameter gear 81 of wide cut gear 80 belows, the 1st driving gear 82, middle diameter gear 83, and gear wheel in large diameter 84 is also all the time with 80 rotations of wide cut gear, so, even be reduced to from reference level OS at the pasta of gear box oil under near the situation the lower end of the 1st driving gear 82 or gear wheel in large diameter 84 etc., also can splash by the gear box oil that makes that the 1st driving gear 82 or gear wheel in large diameter 84 realized, and as lubricant oil to supplies such as bearing 93 that supports the 1st transmission shaft 16 and the 2nd transmission shaft 62 etc. and wide cut gears 80.

In addition, be positioned under the drive state of the position outside the N of neutral position making the main transformer quick-mounting put 18 the 1st change gear 33 or the 2nd change gear 36, by power from motor 3, on the basis of above-mentioned non-drive state, the 1st change gear 33, the 2nd change gear 36, change gear 39, the 2nd driving gear 85, and the 3rd driving gear 86 rotations, so, even be reduced to from reference level OS at the pasta of gear box oil under near the situation the lower end of change gear 39 or the 3rd driving gear 86, also can gear box oil be splashed, and jump on the gear box oil of realizations such as the 1st driving gear 82 or gear wheel in large diameter 84 by change gear 39 or the 3rd driving gear 86, and as lubricant oil to supplies such as bearing 93 that supports the 1st transmission shaft 16 and the 2nd transmission shaft 62～the 5th transmission shaft 65 etc. and wide cut gears 80.

And, in above-mentioned drive state, be positioned under the drive state of the position outside the N of neutral position at the change gear 39 that makes secondary speed-changing device 20, by power from motor 3, on the basis of above-mentioned drive state, low speed gear 87, the 4th driving gear 89, high gear 90, the trailing wheel input gear 88 of differential motion 22, about the 5th driving gear 91, and about driving gear 26 rotation, in other words, be contained in all gears 26 in the gearbox 4 in, 33,36,39,80～91 all rotations, so, even the pasta of gear box oil be reduced to from reference level OS low speed gear 87 or trailing wheel with near the situation the lower end of the input gear 88 of differential motion 22 etc. under, also can gear box oil be splashed, and jump on the gear box oil of realization such as change gear 39 or the 1st change gear 33 by low speed gear 87 or input gear 88, and as lubricant oil to supplies such as the bearing 93 of support the 1st transmission shaft 16 and the 2nd transmission shaft 62～the 5th transmission shaft 65 etc. and wide cut gears 80.

That is to say, even be negligent of the supply of gear box oil, the pasta of gear box oil is reduced to low speed gear 87 or trailing wheel with under near the situation the lower end of the input gear 88 of differential motion 22 etc. from reference level OS, in motion, since in be contained in that all gears 26,33,36,39,80～91 all rotate in the gearbox 4, make lubricating oil splash or go up jumping, also gearbox more stablely to supplies such as these gears 26,33,36,39,80～91 or bearings 93, can be able to be avoided the sintering of bearing 39 etc. as lubricant oil.

As shown in figure 23, at the rear portion of gearbox 4 upper left quarter, and screw between the plug 95 on the diameter reducing part 94A at front end and be formed with air hole (not shown), and be connected with the sealed department 94 that has wide diameter portion 94B, prevent that gear box oil from spilling from its air hole.

As Figure 13～shown in Figure 17, between the 1st service axis 35 and the 1st shift fork 34, have the 1st cam 97, it constitutes by the pair of cams hole 34a on the shaft hub 34A that is formed on the 1st shift fork 34 and inserts among these cam holes 34a and connects the attachment pegs 96 that is equipped on the 1st service axis 35, the rotation motion of the 1st service axis 35 is changed into the slip of the 1st shift fork 34.

Between the 2nd service axis 38 and the 2nd shift fork 37, have the 2nd cam 99, it constitutes by the pair of cams hole 37a on the shaft hub 37A that is formed on the 2nd shift fork 37 and inserts among these cam holes 37a and connects the attachment pegs 98 that is equipped on the 2nd service axis 38, the rotation motion of the 2nd service axis 38 is changed into the slip of the 2nd shift fork 37.

Foreign side is outstanding left from the 1st housing section 28 for the 1st service axis 35, and is connected in necessary length in the connection of outstanding length setting Cheng Zaiyu the 1st coupling mechanism L1 of the connection end 35A on the main shift lever 17 via the 1st coupling mechanism L1.

Foreign side is outstanding left from the 1st housing section 28 for the 2nd service axis 38, and is connected in the outstanding length long size of the outstanding length setting one-tenth of the connection end 38A on the main shift lever 17 than the connection end 35A of the 1st service axis 35 via the 2nd coupling mechanism L2.

Be equipped with linking on the sidewall of the 1st housing section 28 have about towards the carriage 101 of the 1st stationary axle 100, can be equipped with main shift lever 17 on the propeller boss 102 that is equipped with of setting-in outside rotatably with respect to its 1st stationary axle 100, can carry out with one be equipped on the propeller boss 102 front and back towards fulcrum 103 be the operation that swings of fulcrum, and be in by the state of helical spring 104 to the right-hand side application of force of car body.

The 1st coupling mechanism L1 has: the link arm 105 of rotating integratedly around its axle center with the 1st service axis 35, but the extraterrestrial embedding of swing is equipped in the 1st coupling member 106 of the interior side of car body one side of propeller boss 102 on the 1st stationary axle 100, and connect the 1st arm 106A of the 1st coupling member 106 and the coupling ring 107 of link arm 105 etc., on the 2nd arm 106B of the 1st coupling member 106, be formed on the neutral position N place of the 1st recess 17A by main shift lever 17 on the main shift lever 17 helical spring 104 the application of force and outer embedding selectively is connected on the main shift lever 17.

The 2nd coupling mechanism L2 has: the link arm 108 of rotating integratedly around its axle center with the 2nd service axis 38, but the extraterrestrial embedding of swing is equipped in the 2nd coupling member 109 of car body foreign side one side of propeller boss 102 on the 1st stationary axle 100, and connect the 1st arm 109A of the 2nd coupling member 109 and the coupling ring 110 of link arm 108 etc., on the 2nd arm 109B of the 2nd coupling member 109, be formed on the neutral position N place of the 2nd recess 17B by overcoming main shift lever 17 on the main shift lever 17 helical spring 104 the application of force and outer embedding selectively is connected on the main shift lever 17.

Constitute according to this connection, the main transformer quick-mounting puts 18 at N place, the neutral position of main shift lever 17, with main shift lever 17 direction swinging operation to the left and right, thereby the 1st recess 17A of main shift lever 17 or the 2nd recess 17B can be selected to be connected on the 2nd arm 109B some of the 2nd arm 106B that is positioned at the 1st coupling mechanism L1 about it and the 2nd coupling mechanism L2, when select under coupled situation main shift lever 17 forwards, backwards during the direction swinging operation at it, the 1st service axis 35 that obtains because of its swinging operation or the spinning movement of the 2nd service axis 38 are by corresponding cam 97,99 are transformed into the slip of the 1st shift fork 34 or the 2nd shift fork 37, the 1st change gear 33 or the 2nd change gear 36 to the corresponding direction slide of the direction of operating of main shift lever 17, the corresponding speed change state of operating position with main shift lever 17 appears.

That is to say, make the cammingly that the spinning movement of the 1st service axis 35 and the 2nd service axis 38 is transformed into the slip of the 1st shift fork 34 or the 2nd shift fork 37 by the main transformer quick-mounting being put 18 operating structure, with slip the situation of the sliding type of the 1st shift fork 34 or 37 slips of the 2nd shift fork is compared by the 1st service axis 35 and the 2nd service axis 38, when the main transformer quick-mounting is put 18 variable speed operations, there is not functional unit towards the lateral outer side slide displacement of gearbox 4, thereby can correspondingly constitute the main transformer speed operating structure of left and right sides width compactness, can reduce to equip the left and right sides width of the gearbox integral body of its main transformer speed operating structure, its result, utilized empty quantity space about it easily, via belt type transmission device 14 and main clutch 15 from motor 3 to gearbox 4 transmissions, about umbrella gear 46 and the connection of side brake 47, and the connection of differential locking pedal 23 and locking framework 24.

As Figure 14～Figure 16, Figure 18 and shown in Figure 19, secondary speed-changing device 20 constitutes the sliding type that makes shift fork 37 slips by the slip of the 3rd service axis 41, foreign side is outstanding left from the 1st housing section 28 for the 3rd service axis 41, and is connected in the length of sliding between the lateral sidewalls of outstanding length setting Cheng Zaidi 1 housing section 28 of the connection end 41A on the secondary speed change lever 19 and the 2nd coupling mechanism L2 via the 3rd coupling mechanism L3.

The 3rd coupling mechanism L3 has: be equipped on the carriage 101 roughly longitudinally the 2nd stationary axle 111 be the crankweb 112 of a spot wobble, and the 1st arm 112A of this crankweb 112 operation is connected in attachment pegs 113 on the connection end 41A of the 3rd service axis 41, on the engaging recessed part 112a that is formed on the 2nd arm 112B of crankweb 112, the operation be connected be equipped on the carriage 101 about towards the 3rd stationary axle 158 be the joint part 19A of the secondary speed change lever 19 of fulcrum swing.

Constitute according to this connection, with secondary speed change lever 19 forwards, backwards during the direction swinging operation, its swing is transformed into the slip of the 3rd service axis 41 by crankweb 112, by its slip, via shift fork 37, change gear 39 to the corresponding direction slide of the direction of operating of secondary speed change lever 19, the corresponding speed change state of operating position with secondary speed change lever 19 appears.

And, by secondary speed-changing device 20 is constituted sliding type, and make by the slip of the 3rd service axis 41 with respect to the advance and retreat of the 1st housing section 28 and between the lateral sidewalls of the 1st housing section 28 and the 2nd coupling mechanism L2, carry out, thereby secondary variable speed operation structure can constitute and main transformer speed operating structure left and right sides width compactness similarly, can reduce to equip the left and right sides width of the gearbox integral body of its secondary variable speed operation structure, its result, utilized idle space about it easily, via belt type transmission device 14 and main clutch 15 from motor 3 to gearbox 4 transmissions, about brake petal 46 and the connection of side brake 47, and the connection of differential locking pedal 23 and locking framework 24 etc.

And, by equipment main shift lever 17 on the 1st housing section 28, secondary speed change lever 19, and with its join operation the main transformer quick-mounting put 18 or secondary speed-changing device 20 on the 1st coupling mechanism L1～the 3rd coupling mechanism L3, carry out gear put with respect to the main transformer quick-mounting 18 and secondary speed-changing device 20 change etc. under the situation that the inside of gearbox 4 is keeped in repair, needn't unload these speed change levers 17, the 19 and the 1st coupling mechanism L1～the 3rd coupling mechanism L3, can be by unload the 2nd housing section 29 from the 1st housing section 28 and carry out fairly simplely, its result has realized the maintenance of gearbox 4 inside is improved.

As Fig. 1～Fig. 7 and Figure 24～shown in Figure 27, be equipped on the supercentral motor 3 in the car body left and right sides above the fuel tank 115 that covers by case cover 114 is equipped with, cooler 117 by 116 coverings of cooler cover, and baffler 118 etc., the storage battery 120 that covers by front shroud 119 is equipped with in the preceding bottom of motor 3.Under motor 3, be equipped with operating oil tank 121, effectively utilize the following side space that can suppress the motor 3 that obtains on the higher position that muddy water etc. adheres to, be not vulnerable to the baneful influence that adhering to of muddy water causes by motor 3 is provided in.

That is to say, be provided in front portion one side of car body, the downside of motor 3 by storage battery that weight is bigger 120 and operating oil tank 121, can be implemented in the raising of anterior-posterior balance when being attached at apparatus for work etc. on the rear vehicle, motor 3 can be provided on the higher position simultaneously, and the center of gravity of reduction car body, therefore realize the raising of car body stability.

Cooler 117 constitutes from the car body right side air-breathing, baffler 118 exhausts towards the car body left side.

As Fig. 6 and shown in Figure 24, between the body frame 122 about the supporting 124 about on the body frame 122 about operating oil tank 121 is attached at by bolt is fixedly supported on the vehicle frame 1, and connect between the front and back coupling frame 123 of these body frames 122.

As Fig. 1～Fig. 6 and Figure 25～shown in Figure 27, motor 3 and upright being located between the steering column 125 at its rear, effectively utilize the space that forms betwixt, be equipped with air cleaner 126 and Denso part (not shown) etc., and be equipped with the cover 127 that covers it.

And, by case cover 114, cooler cover 116 and cover 127, form the engine hood A of the top of covering engine 3.

Cover 127 has the 1st embedding part (not shown) in the back side of its upper front end one side, it is outer accurately to be embedded on the pairing left and right card shotpin 129 on the support stem stem 128 that the upright back upper end portion of being located at cooler 117 has, and, the back side one side on top has the 2nd embedding part (not shown) in its back-end, it has the state of surplus to be embedded on the card shotpin (not shown) that stands the top of being located at the supporting frame 130 that has on the steering column 125 outward with fore-and-aft direction, be spaced apart certain state with the front and back with cooler cover 116, the lower bolt of its left and right sides is attached on the vehicle frame 1.And 127 left and right sides portion is formed with recess 127A at cover, and the space, underfooting with the driver that guarantees to take a seat suppresses to contact with pin.

On cover 127, the horizontal lid 132 that opens and closes the loam cake 131 of the opening 127a that forms at an upper portion thereof and open and close the opening 127b that forms in its left side is with the state among a pair of card claw stop 131a that has on these rearward end, engaging recessed part 127c, the 127d that the 132a card only forms on the end edge of corresponding opening 127a, 127b, be fixed on the cover 127 by the bolt 133 of handling knob with the corresponding band of these front ends, thereby can simply equip with loading and unloading.

According to this formation, for example under the situation of carrying out as the replacing of the safety fuse cutout (not shown) of an example of the Denso part that is provided in cover 127 inside etc., by taking off loam cake 131, need not to take off the operation of cover 127 and can be easily carry out the replacing etc. of safety fuse cutout by covering 127 upper opening 127a, and, under the situation of replacing of air cleaner 126 being carried out component 126A etc., by taking off horizontal lid 132, and the operation that need not to take off cover 127 can easily be carried out lid 126B with respect to the loading and unloading of air cleaner 126 or the replacing of component 126A etc. from the opening 127b that covers 127 left sides.

Air cleaner 126 is provided in towards the rear lower side and opposite car body right side, the car body at baffler 118 places left side with sucking pipe 126C, and, shield 134 is equipped with between motor 3 and the air cleaner 126, suppress the hot blast that sucking pipe 126C carries out and suck.On loam cake 131, be formed with to marshalling a plurality of ventilating hole 131b.

As Fig. 1～Fig. 6, Fig. 9 and shown in Figure 11, belt type transmission device 14 is equipped to following state, promptly, driving belt 137 is around hanging over the output belt pulley 126 on the end of stretching out that is installed on output shaft 13 in the motor 3, and be installed on the stretching out between the input belt pulley 136 on the end of the 1st transmission shaft 16 in the gearbox 4, and by use the left-external side of clutch pedal 138 at the clutch operating of taking left front outfit on the base plate face of platform 10, to walk around in the mode of taking the pedal operation portion 139 that forms on the platform 10 to the left side displacement of taking platform 10, and, owing to be placed on the base plate face with the posture of the transmission assistant side on its transmission shield 140, be bent to form く font into intermediate portion displacement downwards along the base plate face of taking platform 10.

Gear pump 142 is equipped with on right side than the belt type transmission device 14 of the more close central part of taking platform 10 of belt type transmission device 14, this gear pump 142 is in the position of the left back below that is positioned at motor 3 and is positioned at the state of the base plate face top position of taking platform 10, by via with belt type transmission device 14 right sides in abutting connection with the belt type auxiliary drive 141 that is equipped with, from the motivational drive of motor 3.

According to above-mentioned formation, output shaft 13 and its peripheral position of motor 3, the 1st transmission shaft 16 and each service axis 35 of gearbox 4,38,41,41,48,78 or its peripheral position, belt type transmission device 14, auxiliary drive 141, and gear pump 142 etc. is positioned at than on the high position of the height and position of taking platform 10, so, even under the situation that this tractor is travelled in the many paddy fields of muddy water, also can prevent along with it travels, wheel 5 by front and back, 6 muddy water that splash are attached to output shaft 13 and its peripheral position of motor 3, the 1st transmission shaft 16 and each service axis 35 of gearbox 4,38,41,41,48,78 or its peripheral position, belt type transmission device 14, auxiliary drive 141, and on the gear pump 142 etc. and produce baneful influence.

And, by taking outfit belt type transmission device 14 on the base plate face of platform 10, the car body left and right sides width increase that can overturn and produce under the situation of the horizontal foreign side of taking platform 10 in that belt type transmission device 14 is provided in, and realize oversimplifying with respect to the supporting structure of belt type transmission device 14, and, both belt type transmission device 14 can be provided on the base plate face of taking platform 10, can avoid again because of its belt type transmission device 14, take each operating pedal 23 that has on the platform 10,46, the unfavorable condition that 138 operation is hindered, and be in the locational situation that exceeds predetermined distance from the base plate face with the transmission assistant side that makes the belt type transmission device 14 that is positioned on the base plate face of taking platform 10 and compare, the manipulator's who takes Drive Section 2 open sense is improved.

As Fig. 2, Fig. 4 and Figure 26～shown in Figure 31, the rear of motor 3 on supporting frame 130, the lower position of steering wheel 11, can around about towards axis swing ground be equipped with the swing arm 143 of crank shape, this swing arm 143 is via the posture with approximate horizontal, be connected on the speed control rod (not shown) that the right side of motor 3 has by 144 operations of the operation cable (example of coupling member) that sets in the engine hood A, its 2nd arm 143B via up and down towards coupling rod 146 operations be connected in can be around front and back towards axis swing be provided on the connection arm 145A of gas pedal 145 of the right front portion of taking platform 10.

That is to say, by the degrees of freedom height that will connect but easily because of causing adhering to of muddy water moving on the upper side position that muddy water that the operation cable 144 that reduces splashes with the wheel 5,6 before and after being provided in by the mode in the engine hood A is difficult for adhering to, can successfully operate swing arm 143 that cable 144 carries out and the join operation between the speed control rod.

And, by by not carrying out join operation, can successfully carry out swing arm 143 that coupling rod 146 carries out and the join operation between the gas pedal 145 because of the 2nd arm 143B of 146 pairs of swing arms 143 of coupling rod of the reduction that causes adhering to of muddy water moving and the connection arm 145A of gas pedal 145.

Its result can successfully carry out the join operation between gas pedal 145 and the speed control rod.

On motor 3, be equipped with Returnning spring (not shown), to speed control rod to the motor stop position application of force.

Gas pedal 145 constitutes by being bent to form pipe material of becoming く font roughly when becoming roughly コ font, side-looking when overlooking etc., its connect arm 145A take platform 10 below be attached on the lower end of coupling rod 146, trample operation by it, overcome the application of force of the Returnning spring of motor 3 one sides, speed control rod is operated to high speed one side, trample operation along with removing it, under the application of force of Returnning spring, return to low speed one side with speed control rod.

Accelerator rod 148 below steering wheel 11, is equipped with, the operating sheet 147 on described accelerator rod 148 and the 1st arm 143A that is connected to swing arm 143 from low speed one side around up and down towards the axle center swing integratedly.

Accelerator rod 148 constitutes by being bent to form pole steel for the く font etc., its up and down towards the both end sides up and down of an axial region 148A can be supported on the supporting frame 130 with the relative rotation, in lower end one side that crank shape operating sheet 147 is fixed, be embedded with the 1st friction plate 149 that is installed between its operating sheet 147 and the supporting frame 130 outward, the wobble plate 150 that swingingly engages with operating sheet 147 one, be installed at the 2nd friction plate 151 between its wobble plate 150 and the supporting frame 130, it is carried out the helical spring 152 of the crimping application of force, and the pad 153 of the lower end of block helical spring 152, and, by screwing the nut 154 of keeping its crimped status, formation can be carried out the friction type retaining mechanism 155 that the operation of the speed control rod of the desired procedure position that its operation finishes keeps.

That is to say,, the constant-speed traveling under the desirable setting speed can occur, and can carry out variable speed operation than a side of setting speed speedup by gas pedal 145 by the operation of accelerator rod 148.

On supporting frame 130, be equipped with latch plate 156, along with the operation of accelerator rod 148 to idle position, contact with the free end of operating sheet 147 and give the operation resistance, so, can easily hold accelerator rod 148 and arrive idle positions, suppress inadvertently to will speed up that bar 148 is operated the motor stop position and the generation that makes the unfavorable condition that motor 3 stops.

Coupling rod 146 has from the swing arm 143 the extension 146A that the point of attachment with the 1st arm 143A further stretches out upward, and form handle 146B towards the bending of car body right by external part one side that makes its extension 146A, for example, in connecting between the arm 145A attached to the back side of taking platform 10 and gas pedal 145 such as mud or grass, speed control rod no longer returns under the situation of low speed one side under the application of force of the Returnning spring by motor 3 one sides with gas pedal 145, also can carry on its handle 146B and makes speed control rod return low speed one side with gas pedal 145 forcibly by holding.

And, move up and down the handle 146B by being positioned at steering wheel 11 belows and the operations linkage of gas pedal 145 or accelerator rod 148, can quicken the Visual Confirmation of serviceability.

As Fig. 6 and shown in Figure 32, lifting jar 7 is provided in the top of gearbox 4 with the posture of hanging down behind its upper surface, elongated boom 8 with pairing left and right, the carriage 101 that is attached at the pairing left and right on the gearbox 4 by bolt supports, so, compare with the situation of on gearbox 4, equipping lifting jar 7 integratedly, can realize the simplification of the shape and the structure of gearbox 4.

In addition, the reference character among Fig. 6 157 is to suppress muddy water to being equipped in each service axis 35,38,41,44,48,78 on the gearbox 4 or connecting the pairing left and right mudguard wing that adheres on thereon each coupling mechanism L1～L3.

[other mode of executions]

As operating vehicle, can be transplanter, direct seeding machine or combine-harvester etc.

Claims (8)

1. the operation equipment of an operating vehicle comprises:

Gearbox (4) is taken in the speed change gear of above-mentioned operating vehicle;

The 1st manual operation parts (17) are used for selecting desirable one from a plurality of shift position;

The 1st coupling member (106) is supported in the above-mentioned operating vehicle, can transmit the steering force from above-mentioned the 1st manual operation parts (17);

The 1st connects end (35A), links with above-mentioned the 1st coupling member (106) interlock;

The 1st service axis (35) is supported on the above-mentioned gearbox (4), can rotate around the 1st axle center, and support above-mentioned the 1st connection end (35A) outside gearbox (4);

The 1st moving member (34) can be at the direction top offset along above-mentioned the 1st axle center;

The 1st cam (97) becomes above-mentioned the 1st moving member (34) in the displacement on above-mentioned the 1st axis direction the rotation transformation of above-mentioned the 1st service axis (35) around above-mentioned the 1st axle center;

The 1st change gear (33) can be by the displacement with above-mentioned the 1st moving member (34) butt;

The 2nd coupling member (109) is supported in the above-mentioned operating vehicle, can transmit the steering force from above-mentioned the 1st manual operation parts (17);

The 2nd connects end (38A), links with above-mentioned the 2nd coupling member (109) interlock;

The 2nd service axis (38) is supported on the above-mentioned gearbox (4), can rotate around the 2nd axle center, and support above-mentioned the 2nd connection end (38A) outside gearbox (4);

The 2nd moving member (37) can be at the direction top offset along above-mentioned the 2nd axle center;

The 2nd cam (99) becomes above-mentioned the 2nd moving member (37) in the displacement on above-mentioned the 2nd axis direction the rotation transformation of above-mentioned the 2nd service axis (38) around above-mentioned the 2nd axle center;

The 2nd change gear (36) can be by the displacement with above-mentioned the 2nd moving member (37) butt;

It is characterized in that,

Above-mentioned the 1st coupling member (106) rotatably is supported on the stationary axle (100), and this stationary axle (100) is supported in the above-mentioned operating vehicle;

Above-mentioned the 2nd coupling member (109) is to be supported on the said fixing axle (100) with above-mentioned the 1st coupling member (106) and the position that is listed on the stationary axle (100);

The above-mentioned the 2nd connects end (38A) is projected into the position of leaving above-mentioned operating vehicle from above-mentioned the 1st connection end (35A);

Above-mentioned the 1st manual operation parts (17) selectively link with the some interlock of above-mentioned the 1st coupling member (106) and above-mentioned the 2nd coupling member (109).

2. operation equipment as claimed in claim 1 is characterized in that,

Above-mentioned gearbox (4) has whole the 1st horizontal side towards above-mentioned operating vehicle;

Above-mentioned the 1st coupling member (106) and above-mentioned the 2nd coupling member (109) and said fixing axle (100) are supported on above-mentioned the 1st side of gearbox.

3. operation equipment as claimed in claim 2 is characterized in that, also has:

The 2nd operation piece (19) of secondary speed-changing device (20) usefulness;

The 3rd coupling member (L3) links with aforesaid operations spare (19) interlock, has the lateral ends than above-mentioned the 1st side of the more approaching above-mentioned gearbox of above-mentioned the 2nd coupling member (109);

The 3rd connects end (41), links with above-mentioned the 3rd coupling member (L3) interlock;

Secondary speed change is supported on the above-mentioned gearbox (4) with the 3rd service axis (41), supports the above-mentioned the 3rd in gearbox (4) position in addition and connects end (41);

Secondary speed change is operated along with the displacement of above-mentioned the 3rd service axis (41) with the 3rd change gear (39).

4. operation equipment as claimed in claim 3 is characterized in that,

The shift transformation of the fore-and-aft direction of the 2nd operation piece (19) that above-mentioned the 3rd coupling member (L3) is used above-mentioned secondary speed-changing device becomes the axial displacement of above-mentioned the 3rd service axis (41).

5. as each described operation equipment in the claim 1～3, it is characterized in that,

Above-mentioned the 1st moving member (34) and above-mentioned the 2nd moving member (37) are the shift forks that has recess on front end separately.

6. as each described operation equipment in the claim 1～3, it is characterized in that,

Above-mentioned the 1st moving member (34) has the shaft hub (34A) that can install movably on above-mentioned the 1st service axis (35), the cam hole of above-mentioned the 1st cam (97) is formed on the above-mentioned shaft hub (34A).

7. as each described operation equipment in the claim 1～3, it is characterized in that,

Above-mentioned the 1st manual operation parts (17) are supported on the said fixing axle (100), can around with the upwardly extending fulcrum in side (103) swing of the axle center quadrature of said fixing axle (100).

8. operation equipment as claimed in claim 7 is characterized in that,

Above-mentioned the 1st coupling member (106) has the 1st arm (106B);

Above-mentioned the 2nd coupling member (109) has the 2nd arm (109B);

Above-mentioned the 1st manual operation parts (17) have a pair of recess (17A, 17B), and it selectively is fastened on above-mentioned the 1st arm (106B) and the 2nd arm (109B) some.

Images