CN202914709U - Mechanisms of gear switch manipulation and starting control for tractor - Google Patents

Abstract

The utility model discloses mechanisms of a gear switch manipulation and starting control for tractors, and relates to the field of the gear switch manipulations which are installed on covers on tractor gearboxes and starting mechanisms. The mechanisms of the gear switch manipulation and the starting control for the tractors are characterized in that a control lever is connected with a main shaft through a control lever connecting plate and a main shaft connecting plate, and the main shaft penetrates through an upper cover of a gear box. A right oil seal, a right shaft sleeve, a limiting sleeve, a limiting spring, a left shaft sleeve and a left oil seal are arranged on the main shaft in a sleeved mode, a deflector rod is installed on the main shaft, a reversing guide plate is installed in the upper cover of the gear box, a right fork shaft which is provided with a right fork, and a left fork shaft which is provided with a left fork are both installed in the upper cover of the gear box, and a right hinge pin and a left hinge pin penetrate through an interlock plate, and are both installed in the upper cover of the gear box. The structures form a gear switch manipulation mechanism. A gear display switch is installed on the main shaft to form a starting control mechanism. The overall gear switch manipulation mechanism is accurate and reliable in gear switch, and the starting control mechanism can control to ignite in the state of neutral position.

Description

The used with tractor gear switch is handled and the starting control mechanism

Technical field

The gear switch of the utility model used with tractor is handled and the starting control mechanism relates to gear switch manipulation and the starting mechanism field that covers at gear box of tractor.

Background technique

After the operator on the tractor handles operating handle, the shift fork of stirring on the declutch shift shaft by the driving lever on the line shaft carries out gear shift to the speed change gear in the gearbox, speed change gear in the gearbox on the tractor generally has 1 grade, 2 grades, 3 grades and reverse gear, how to realize speed-change and gearshift and reverse gear, just need design one cover to be installed in the interior gear switch operating mechanism of upper cover of speed changing box, and tractor only just can make firing circuit connect igniting when neutral gear, therefore, for safety ignition, also need to be designed with the starting control mechanism of the aobvious switch of shelves.

Summary of the invention

The purpose of this utility model provides used with tractor gear switch manipulation and starting control mechanism, in order to consist of the gear switch operating mechanism by operating handle, line shaft, driving lever, spacing collar, limit spring, right shift fork, left shift fork, gear shift guide plate, right declutch shift shaft, left declutch shift shaft, upper cover of speed changing box, realize the gear shift purpose, consist of the starting control mechanism by the aobvious switch of shelves, realize the purpose of safe starting.

The used with tractor gear switch is handled and the starting control mechanism, by operating handle, line shaft, driving lever, spacing collar, limit spring, right shift fork, left shift fork, the gear shift guide plate, right declutch shift shaft, left declutch shift shaft, right bearing pin, left bearing pin, interlock board and upper cover of speed changing box consist of the gear switch operating mechanism, consist of the starting control mechanism by the aobvious switch of shelves, operating handle is connected with the operating handle connecting plate, the operating handle connecting plate is connected with the line shaft connecting plate that line shaft is installed, be sleeved in the right oil sealing hole and right axle sleeve hole that right oil sealing on the line shaft and right axle sleeve be installed in respectively upper cover of speed changing box, in the driving lever hole of line shaft, driving lever is installed, match with steel ball on the aobvious switch of shelves at line shaft neutral gear groove that line shaft has, the spacing collar left end that is sleeved on the line shaft contacts with limit spring right-hand member on being sleeved on line shaft, the spacing collar lock groove of spacing collar right-hand member is installed in the driving lever restraining groove of driving lever, the limit spring left end withstands on the limit spring supporting surface of upper cover of speed changing box, line shaft is left, right both sides are installed on respectively in the left axle sleeve and in the right axle sleeve, left axle sleeve and left oil sealing are installed in respectively in the left axle sleeve hole and left oil sealing hole of upper cover of speed changing box; In the front mounting hole of gear shift guide plate, rear mounting hole and in the front installation screw in the upper cover of speed changing box, rear installation screw, be separately installed with front construction bolt, front installation bullet pad and rear construction bolt, rear installation bullet pad, the gear shift guide plate is installed in the upper cover of speed changing box; Right declutch shift shaft two ends are installed in respectively in the right shift fork axis hole that right declutch shift shaft plug screw is housed on the upper cover of speed changing box, in the right shift fork axle bed, and left declutch shift shaft two ends are installed in respectively in the left shift fork axis hole that left shift fork plug screw is housed on the upper cover of speed changing box, in the left shift fork axle bed; The right shift fork axis hole of right shift fork is installed on the right declutch shift shaft, the left shift fork axis hole of left shift fork is installed on the left declutch shift shaft, in the right shift fork bolt hole of right shift fork and in the right declutch shift shaft bolt hole of right declutch shift shaft, right shift fork bolt, right shift fork bullet pad are installed, right shift fork is installed on the right declutch shift shaft, in the left shift fork bolt hole of left shift fork and in the left declutch shift shaft bolt hole of left declutch shift shaft, left shift fork bolt, left shift fork bullet pad are installed, left shift fork is installed on the left declutch shift shaft; The right bearing pin that installs in the interlocking board slot of interlock board and left bearing pin are installed on respectively in the right pin shaft hole and left pin shaft hole of upper cover of speed changing box simultaneously, interlock board is fitted be installed on the anterointernal interlock board attachment face of upper cover of speed changing box, on right bearing pin and left bearing pin, be coated with respectively right cotter pin and left cotter pin; The shift lever end of driving lever moves axially with line shaft is left and right, shift lever end can be inserted in the right shift fork shift lever end groove of right shift fork, also can be inserted in the left shift fork shift lever end groove of left shift fork, driving lever can be placed in 1 grade of hole of gear shift guide plate, in the reverse gear hole or 2 grades of holes, 3 grades of holes in.

The gear switch of this used with tractor is handled and the working principle of starting control mechanism is summarized as follows:

When operating handle during in initial position, driving lever is arranged in the driving lever locating slot of gear shift guide plate, at this moment, shift lever end is arranged in the right shift fork shift lever end groove of right shift fork, when operating handle clockwise rotates the 1 grade of hole that makes driving lever be arranged in the gear shift guide plate by handling connecting plate and line shaft connecting plate drive line shaft, the shift lever end that is arranged in right shift fork shift lever end groove drives right shift fork and right declutch shift shaft slides backward, make and realize 1 grade of handover operation in the gear box of tractor, rotate counterclockwise and make driving lever be arranged in reversing gear during the hole of gear shift guide plate when operating handle drives line shaft, shift lever end drives right shift fork and right declutch shift shaft to front slide, makes and realizes the reverse gear handover operation in the gear box of tractor; When operating handle makes driving lever on the line shaft slide into its left end along the driving lever locating slot of gear shift guide plate, after handling again operating handle and driving line shaft and clockwise rotate, when making driving lever be arranged in 2 grades of holes of gear shift guide plate, the shift lever end that is arranged in left shift fork shift lever end groove drives left shift fork and left declutch shift shaft slides backward, make gear box of tractor internal speed-changing gear realize 2 grades of handover operations, otherwise, after operating handle drive line shaft rotates counterclockwise, when making driving lever be arranged in 3 grades of holes of gear shift guide plate, the shift lever end that is arranged in left shift fork shift lever end groove drives left shift fork and left declutch shift shaft to front slide, makes gear box of tractor internal speed-changing gear realize 3 grades of handover operations.

When shift lever end drives when doing forward and backward motion on right shift fork and the right declutch shift shaft, right declutch shift shaft promotes that the interlock board on the inwall of front side moves to the left in the upper cover of speed changing box, and the interlock board left end is installed in the left declutch shift shaft lock groove, makes left declutch shift shaft by locking; When shift lever end drove left shift fork and left declutch shift shaft and does forward and backward motion, left declutch shift shaft promoted interlock board and moves to the right, and the interlock board right-hand member is installed in the right declutch shift shaft lock groove, makes right declutch shift shaft by locking.Said structure can guarantee that right shift fork and left shift fork carry out reliable and stable gear switching operation.

The line shaft neutral gear groove that has when line shaft middle part declines when steel ball in the aobvious switch of shelves is arranged, at this moment driving lever is in neutral position, and at this moment, the aobvious switch of shelves and steel ball can make the firing circuit conducting of motor, neutral gear igniting when realizing starting, the aobvious switch of shelves plays the effect of starting control mechanism.

The structure that this used with tractor gear switches manipulation and starting control mechanism further specifies as follows:

Operating handle one end pipe and the flat operating handle connecting plate of multistage bending bar weld together, the manipulation handle that the operating handle the other end is used for the operator, the right mounting hole of operating handle connecting plate on the operating handle connecting plate, the right mounting hole of line shaft connecting plate on the line shaft connecting plate of the left mounting hole of operating handle connecting plate and the welding of line shaft one end, be coated with respectively the right construction bolt of operating handle connecting plate in the left mounting hole of line shaft connecting plate, the left construction bolt of operating handle connecting plate, operating handle connecting plate and line shaft connecting plate are installed to link together, operating handle drives line shaft by operating handle connecting plate and line shaft connecting plate and does left, right axial linear movement and drive line shaft itself are made axial rotation, thereby the driving lever that can drive on the line shaft is made left and right sides axial linear movement and axial rotation.

Driving lever is the ladder cylindrical shaft, the driving lever lower end is inlaid in the circular driving lever hole of line shaft, the driving lever restraining groove of driving lever bottom indent is installed in the spacing collar lock groove of spacing collar, when line shaft moves axially left, the limit spring that the spacing collar left end is sleeved on the line shaft is compressed, the limit spring left end withstands on the limit spring supporting surface of upper cover of speed changing box, and the limit spring right-hand member withstands on the left end outside of spacing collar.

In order to prevent in the upper cover of speed changing box along line shaft to the two ends leakage of oil, outside the left axle sleeve that is sleeved on the line shaft left end, be set with left oil sealing, outside the right axle sleeve that is sleeved on the line shaft right-hand member, be set with right oil sealing, left axle sleeve and right axle sleeve are installed in respectively in the left axle sleeve hole of upper cover of speed changing box left end and in the right axle sleeve hole of upper cover of speed changing box right-hand member, and left oil sealing and right oil sealing are installed in respectively in the outer left oil sealing hole in the left axle sleeve hole of upper cover of speed changing box in the right oil sealing hole outside the right axle sleeve hole with upper cover of speed changing box.

The screw thread axle head of the aobvious switch of shelves is installed in the aobvious switch mounting hole of shelves in upper cover of speed changing box left side by the aobvious switch spacer of shelves that installs additional, elastic cable paper and the tractor firing circuit of the aobvious switch of shelves lower end link, the steel ball of upper end falls within the line shaft neutral gear groove of line shaft in the aobvious switch thread spindle of shelves, the tractor firing circuit is connected, realized the neutral gear igniting.

Four jiaos of places have respectively front right mounting hole, rear right mounting hole, rear left mounting hole and front left mounting hole at upper cover of speed changing box, in above four mounting holes, be coated with bolt, upper cover of speed changing box is installed on the gearbox, have right positioning pin hole, have left positioning pin hole in the left front section of upper cover of speed changing box in the right back section of upper cover of speed changing box, by right locating stud and left locating stud, upper cover of speed changing box positioningly is installed on the gearbox respectively.

In upper cover of speed changing box, have screw and gear shift guide plate rear bolt hole before the gear shift guide plate in the middle part of front side middle part and the rear side, corresponding with front mounting hole and the rear mounting hole of gear shift guide plate respectively, by installing front construction bolt, front installation bullet pad and rear construction bolt, rear installation bullet pad additional the commutation guide plate is installed in the upper cover of speed changing box.

In the left shift fork axis hole that in the declutch shift shaft mounting blocks of left and right two evaginations in upper cover of speed changing box front side, has He in the right shift fork axis hole left declutch shift shaft, left declutch shift shaft plug screw and right declutch shift shaft, right declutch shift shaft plug screw are installed respectively; Be coated with respectively left bearing pin and right bearing pin in the left pin shaft hole that in the middle part of the upper cover of speed changing box front side, has and the right pin shaft hole, be coated with respectively left cotter pin and right cotter pin in left bearing pin outer end and right bearing pin outer end, in order to lock left bearing pin and right bearing pin, left bearing pin and right bearing pin are installed in the interlocking board slot of interlock board simultaneously, interlock board snugly is installed on the interlock board attachment face of the anterior inner side surface of upper cover of speed changing box, when the shift lever end of driving lever promotes right shift fork and the axial motion of right declutch shift shaft work front and back, then right declutch shift shaft front end is just pushed the interlock board left end in the left declutch shift shaft lock groove of left declutch shift shaft, make left declutch shift shaft locking, equally, when the shift lever end of driving lever promotes left shift fork and the axial motion of left declutch shift shaft work front and back, then left declutch shift shaft front end is just pushed the interlock board right-hand member to make right declutch shift shaft locking in the right declutch shift shaft lock groove of right declutch shift shaft.

In the right self-locking hole of right declutch shift shaft of upper cover of speed changing box, right self-locking steel ball is installed from bottom to up, right self-locking spring and right self-locking plug screw, respectively with 1 grade of self-locking grooves of right declutch shift shaft at right declutch shift shaft rear portion, right declutch shift shaft neutral gear self-locking grooves, right declutch shift shaft reverse gear self-locking groove matches, namely when right self-locking steel ball drops in 1 grade of self-locking grooves, at this moment gear switch becomes 1 grade, when right declutch shift shaft travels forward, right self-locking steel ball is compressed right self-locking spring, yet right self-locking spring is shifted right self-locking steel ball onto in the right declutch shift shaft neutral gear self-locking grooves again, realize the neutral gear self-locking, when right self-locking steel ball dropped in the right declutch shift shaft reverse gear self-locking groove, gear switch became reverse gear; Equally, in the left self-locking hole of left declutch shift shaft of upper cover of speed changing box, left self-locking steel ball, left self-locking spring and left self-locking plug screw are installed from bottom to up, match with 2 grades of self-locking grooves of left declutch shift shaft at left declutch shift shaft rear portion, left declutch shift shaft neutral gear self-locking grooves, 3 grades of self-locking grooves of left declutch shift shaft respectively, be that left self-locking steel ball is when dropping in 2 grades of self-locking grooves of left declutch shift shaft, gear switch becomes 2 grades, when left self-locking steel ball drops in the left declutch shift shaft neutral gear self-locking grooves, realize the neutral gear self-locking, when left self-locking steel ball was fallen in 3 grades of self-locking grooves of left declutch shift shaft, gear switch became 3 grades.

In the right bearing pin O type ring recess that right bearing pin middle part has, right O type circle is installed, with oil-leakage-prevention, in the right bearing pin pin-and-hole that right bearing pin front portion has, right cotter pin is installed, make right bearing pin locking, do not make axial float, same, in the left bearing pin O type ring recess that left bearing pin middle part has, left O type circle is installed, in the left bearing pin pin-and-hole that left bearing pin front portion has, left cotter pin is installed, makes left bearing pin locking, do not make axial float.

Interlock board is the rectangular flat that two ends are semicircular arc, have the interlocking board slot of oval shape at the interlock board middle part, right bearing pin and left bearing pin are installed in the interlocking board slot regularly, interlock board can be promoted to do left and right movement by right declutch shift shaft and left declutch shift shaft, makes in left and right two declutch shift shafts and does not make the declutch shift shaft of axial motion by locking.

Line shaft in this used with tractor gear switch manipulation and the starting control mechanism, driving lever, right shift fork, left shift fork, commutation guide plate, right declutch shift shaft, left declutch shift shaft are installed in the upper cover of speed changing box, compact structure, it is accurately reliable that driving lever and commutation guide plate can make the shift fork gear switch handle, and starting ignition can be controlled at neutral gear the time.

Description of drawings

Fig. 1: the used with tractor gear switch is handled and starting control mechanism three-dimensional exploded schematic representation.

Fig. 2: the used with tractor gear switch is handled and the three-dimensional assembling of starting control mechanism schematic representation.

Fig. 3: the upper cover of speed changing box 33 internal structure schematic three dimensional views that right declutch shift shaft 24 and left declutch shift shaft 25, right bearing pin 28, left bearing pin 29 and interlock board 30 are installed.

Fig. 4: upper cover of speed changing box 33 interior three-dimensional schematic representation.

Fig. 5: left axle sleeve hole 83 is positioned at the upper cover of speed changing box 33 rear side schematic three dimensional views on right side.

Fig. 6: upper cover of speed changing box 33 external structure schematic representation.

Fig. 7: the gear shift guide plate 19 main schematic representation of looking.

Fig. 8: gear shift guide plate 19 is the A-A cross-sectional schematic in Fig. 7.

Fig. 9: the interlock board 30 main schematic representation of looking.

Figure 10: interlock board 30 is the B-B cross-sectional schematic in Fig. 9.

Figure 11: the driving lever 5 main schematic representation of looking.

Figure 12: spacing collar 7 three-dimensional structure schematic representation.

Figure 13: the decomposition schematic three dimensional views that right declutch shift shaft 24, left declutch shift shaft 25, right bearing pin 28, left bearing pin 29 and upper cover of speed changing box are 33.

Figure 14: right shift fork 11 three-dimensional structure schematic representation.

Figure 15: left shift fork 14 three-dimensional structure schematic representation.

Figure 16: the aobvious switch 43 main schematic representation of looking of shelves.

Embodiment

Referring to Fig. 1 and each relevant drawings, the used with tractor gear switch is handled and the starting control mechanism, by operating handle 1, line shaft 4, driving lever 5, spacing collar 7, limit spring 8, right shift fork 11, left shift fork 14, gear shift guide plate 19, right declutch shift shaft 24, left declutch shift shaft 25, right bearing pin 28, left bearing pin 29, interlock board 30 and upper cover of speed changing box 33 consist of the gear switch operating mechanism, consist of the starting control mechanism by the aobvious switch 43 of shelves, operating handle 1 is connected with operating handle connecting plate 48, operating handle connecting plate 48 is connected with the line shaft connecting plate 49 that line shaft 4 is installed, be sleeved in the right oil sealing hole 77 and right axle sleeve hole 78 that right oil sealing 2 on the line shaft 4 and right axle sleeve 3 be installed in respectively upper cover of speed changing box 33, in the driving lever hole 6 of line shaft 4, driving lever 5 is installed, match with steel ball 110 on the aobvious switch 43 of shelves at line shaft neutral gear groove 50 that line shaft 4 has, spacing collar 7 left ends that are sleeved on the line shaft 4 contact with limit spring 8 right-hand members on being sleeved on line shaft 4, the spacing collar lock groove 55 of spacing collar 7 right-hand members is installed in the driving lever restraining groove 54 of driving lever 5, limit spring 8 left ends withstand on the limit spring supporting surface 84 of upper cover of speed changing box 33, line shaft 4 left sides, right both sides are installed on respectively in the left axle sleeve 40 and in the right axle sleeve 3, left axle sleeve 40 and left oil sealing 41 are installed in respectively in the left axle sleeve hole 83 and left oil sealing hole 82 of upper cover of speed changing box 33; In the front mounting hole 56 of gear shift guide plate 19, rear mounting hole 57 and in the front installation screw 66 in the upper cover of speed changing box 33, rear installation screw 67, be separately installed with front construction bolt 15, front installation bullet pad 16 and rear construction bolt 17, rear installation bullet pad 18, gear shift guide plate 19 is installed in the upper cover of speed changing box 33; Right declutch shift shaft 24 two ends are installed in respectively in the right shift fork axis hole 63 that right declutch shift shaft plug screw 22 is housed on the upper cover of speed changing box 33, in the right shift fork axle bed 76, and left declutch shift shaft 25 two ends are installed in respectively in the left shift fork axis hole 62 that left shift fork plug screw 23 is housed on the upper cover of speed changing box 33, in the left shift fork axle bed 75; The right shift fork axis hole 108 of right shift fork 11 is installed on the right declutch shift shaft 24, the left shift fork axis hole 105 of left shift fork 14 is installed on the left declutch shift shaft 25, in the right shift fork bolt hole 106 of right shift fork 11 and in the right declutch shift shaft bolt hole 92 of right declutch shift shaft 24, right shift fork bolt 9, right shift fork bullet pad 10 are installed, right shift fork 11 is installed on the right declutch shift shaft 24, in the left shift fork bolt hole 103 of left shift fork 14 and in the left declutch shift shaft bolt hole 91 of left declutch shift shaft 25, left shift fork bolt 12, left shift fork bullet pad 13 are installed, left shift fork 14 is installed on the left declutch shift shaft 25; The right bearing pin 28 that installs in the interlocking board slot 88 of interlock board 30 and left bearing pin 29 are installed on respectively in the right pin shaft hole 65 and left pin shaft hole 64 of upper cover of speed changing box 33 simultaneously, interlock board 30 is fitted be installed on the upper cover of speed changing box 33 anterointernal interlock board attachment faces 86, on right bearing pin 28 and left bearing pin 29, be coated with respectively right cotter pin 20 and left cotter pin 21; The shift lever end 53 of driving lever 5 is with line shaft 4 left and right moving axially, shift lever end 53 can be inserted in the right shift fork shift lever end groove 107 of right shift fork 11, also can be inserted in the left shift fork shift lever end groove 104 of left shift fork 14, driving lever 5 can be placed in 1 grade of hole 58 of gear shift guide plate 19, in the reverse gear hole 59 or 2 grades of holes 60,3 grades of holes 61 in.

Referring to Fig. 1 and Fig. 2, operating handle 1 one end pipes and the flat operating handle connecting plate 48 of multistage bending bar weld together, the manipulation handle that operating handle 1 the other end is used for operator, the right mounting hole 46 of operating handle connecting plate on the flat operating handle connecting plate 48 that welds together with operating handle 1 one ends, the right mounting hole 51 of line shaft connecting plate on the flat line shaft connecting plate 49 that left mounting hole 47 neutralizations of operating handle connecting plate and line shaft 4 weld together, in the left mounting hole 52 of line shaft connecting plate, be coated with respectively the right construction bolt 44 of operating handle connecting plate, the left construction bolt 45 of operating handle connecting plate, operating handle connecting plate 48 is installed with line shaft connecting plate 49 to link together, thereby, driving line shaft 4 by operating handle 1 does left, right axial linear movement and make axial rotation around line shaft 4 axis makes the driving lever 5 on the line shaft 4 also do left, right axial linear movement and make axial rotation with line shaft 4.

Referring to Fig. 1, Fig. 2 and Figure 11, there is circular shift lever end 53 driving lever 5 upper ends of stepped cylindrical shaft, driving lever 5 lower ends are inlaid in the driving lever hole 6 of circle of line shaft 4, and the driving lever restraining groove 54 of driving lever 5 bottom indents is installed in the spacing collar lock groove 55 of spacing collar 7U shape; Spacing collar 7 left ends contact with limit spring 8 right-hand members, limit spring 8 left ends withstand on the limit spring supporting surface 84 of upper cover of speed changing box 33, the shift lever end 53 of driving lever 5 upper end circles can be inserted in the right shift fork shift lever end groove 107 of right shift fork 11 and maybe can be inserted in the left shift fork shift lever end groove 104 of left shift fork 14, the shift lever end 53 of the driving lever 5 that rotates with line shaft 4 can drive right shift fork 11 and right declutch shift shaft 24 is done axial motion simultaneously, also can drive left shift fork 14 and left declutch shift shaft 25 and do simultaneously axial motion.

As shown in Figure 1, in the left side of the left axle sleeve 40 that is sleeved on line shaft 4 left ends left oil sealing 41 is arranged, on the right side of the right axle sleeve 3 that is sleeved on line shaft 4 right parts right oil sealing 2 is arranged, left axle sleeve 40 and right axle sleeve 3 are installed in respectively in the left axle sleeve hole 83 of upper cover of speed changing box 33 left ends and in the right axle sleeve hole 78 of upper cover of speed changing box 33 right-hand members, in the right oil sealing hole 77 that left oil sealing 41 and right oil sealing 2 are installed in respectively in the outer left oil sealing hole 82 in the left axle sleeve hole 83 of upper cover of speed changing box 33 and right axle sleeve hole 78 is outer.

As shown in Figure 1, the screw thread axle head of the aobvious switch 43 of shelves is installed in the aobvious switch mounting hole 81 of shelves in upper cover of speed changing box 33 left sides by the aobvious switch spacer 42 of shelves that installs additional, the screw thread axle head of the aobvious switch 43 of shelves has steel ball 110, and steel ball 110 also can be in the line shaft neutral gear groove 50 of line shaft 4.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, there are respectively front right mounting hole 69, rear right mounting hole 71, rear left mounting hole 72 and front left mounting hole 74 in 33 4 jiaos of places at upper cover of speed changing box, in above four holes, can be coated with bolt, upper cover of speed changing box 33 is installed on the gear box of tractor; In 33 right back of upper cover of speed changing boxes and left front right positioning pin hole 70 and left positioning pin hole 73 that has respectively, can install respectively right locating stud 32 and left locating stud 31, upper cover of speed changing box 33 positioningly is installed on the gear box of tractor.

Referring to Fig. 4 and Fig. 7, installation screw 66 and rear installation screw 67 before in the middle part of upper cover of speed changing box 33 middle parts, interior front side and rear side, having, corresponding with rear mounting hole 57 with the front mounting hole 56 of the gear shift guide plate 19 of rectangular flat shape respectively, by between above-mentioned hole, installing corresponding front construction bolt 15, front installation bullet pad 16 and rear construction bolt 17, rear installation bullet pad 18 additional, commutation guide plate 19 is installed in the upper cover of speed changing box 33.

Such as Fig. 3, Fig. 4 and shown in Figure 13, left declutch shift shaft 25, left declutch shift shaft plug screw 23 and right declutch shift shaft 24, right declutch shift shaft plug screw 22 are installed respectively in the left shift fork axis hole 62 of the circle that has and the right shift fork axis hole 63 in the rectangle declutch shift shaft mounting blocks of left and right two evaginations in upper cover of speed changing box 33 front sides; Be coated with respectively left bearing pin 29 and right bearing pin 28 in the left pin shaft hole 64 that in the middle part of upper cover of speed changing box 33 front sides, has and the right pin shaft hole 65; In the right bearing pin O type ring recess 102 that right bearing pin 28 middle parts have, right O type circle 26 is installed, in the right bearing pin pin-and-hole 101 that right bearing pin 28 front portions have, right cotter pin 20 is installed, in the left bearing pin O type ring recess 100 that left bearing pin 29 middle parts have, left O type circle 27 is installed, in the left bearing pin pin-and-hole 99 that left bearing pin 29 front portions have, left cotter pin 21 is installed.

Referring to Fig. 1, Fig. 3, Fig. 5 and Fig. 9, left bearing pin 29 and right bearing pin 28 are installed in the interlocking board slot 88 of oval shape of interlock board 30 of rectangle simultaneously, and interlock board 30 snugly is installed on the interlock board attachment face 86 of upper cover of speed changing box 33 anterior inner side surfaces.

As shown in figures 1 and 3, when the shift lever end 53 of driving lever 5 promote right shift forks 11 and right declutch shift shaft 24 do before and after during axial motion, then right declutch shift shaft 24 front ends are just pushed interlock board 30 left ends in the left declutch shift shaft lock groove 89 of left declutch shift shaft 25, make left declutch shift shaft 25 lockings, equally, when the shift lever end 53 of driving lever 5 promote left shift forks 14 and left declutch shift shaft 25 do before and after during axial motion, then left declutch shift shaft 25 front ends are just pushed interlock board 30 right-hand members to make right declutch shift shaft 24 lockings in the right declutch shift shaft lock groove 90 of right declutch shift shaft 24.

Referring to Fig. 1, Fig. 6 and Figure 13, in the right self-locking hole 79 of the right declutch shift shaft of upper cover of speed changing box 33, right self-locking steel ball 34 is installed from bottom to up, right self-locking spring 36 and right self-locking plug screw 38, match with 1 grade of self-locking grooves 96 of right declutch shift shaft at right declutch shift shaft 24 rear portions, right declutch shift shaft neutral gear self-locking grooves 97, right declutch shift shaft reverse gear self-locking groove 98 respectively, realize that 1 grade of self-locking switching, neutral gear self-locking switching and reverse gear self-locking switch; Equally, in the left self-locking hole 80 of the left declutch shift shaft of upper cover of speed changing box 33, left self-locking steel ball 35, left self-locking spring 37 and left self-locking plug screw 39 are installed from bottom to up, match with 2 grades of self-locking grooves 93 of left declutch shift shaft at left declutch shift shaft 25 rear portions, left declutch shift shaft neutral gear self-locking grooves 94,3 grades of self-locking grooves 95 of left declutch shift shaft respectively, realize 2 grades of self-locking switchings, neutral gear self-locking switching and 3 grades of self-locking switchings.

Referring to Fig. 7 and Fig. 8, gear shift guide plate 19 is the rectangular flat plate of four rounding of angle, and 57 liang of holes of the front mounting hole 56 of gear shift guide plate 19 and rear mounting hole lay respectively at the front and rear of the same center line of forward and backward two mounting holes; The front end of the front and back groove that links to each other with driving lever locating slot 109 right sides of gear shift guide plate 19 centres is 1 grade of hole 58, the rear end is reverse gear hole 59, the front end of the front and back groove that links to each other with driving lever locating slot 109 left sides is 2 grades of holes 60, the rear end is 3 grades of holes 61, and the front and back groove that driving lever locating slot 109 is connected with its arranged on left and right sides forms whole H shape groove.

Referring to Fig. 9 and Figure 10, interlock board 30 has the interlocking board slot 88 of oval shape for two ends are the rectangular flat of semicircular arc at interlock board 30 middle parts, and right bearing pin 28 and left bearing pin 29 are by vertical respectively being installed in the interlocking board slot 88 regularly.

Referring to Figure 12, spacing collar 7 is hollow circular tube shape sleeve, has U-shaped spacing collar lock groove 55 in the sleeve wall of spacing collar 7.

Referring to Figure 14, have columniform right shift fork axis hole 108, right shift fork bolt hole 106 and right shift fork shift lever end groove 107 at right shift fork 11.

Referring to Figure 15, have columniform left shift fork axis hole 105, left shift fork bolt hole 103 and left shift fork shift lever end groove 104 at left shift fork 14.

Referring to Figure 16, in aobvious switch 43 upper ends of shelves steel ball 110 is arranged, the elastic cable paper of the aobvious switch of shelves 43 lower ends is connected with the tractor firing circuit.

Claims (13)

1. the used with tractor gear switch is handled and the starting control mechanism, by operating handle (1), line shaft (4), driving lever (5), spacing collar (7), limit spring (8), right shift fork (11), left shift fork (14), gear shift guide plate (19), right declutch shift shaft (24), left declutch shift shaft (25), right bearing pin (28), left bearing pin (29), interlock board (30) and upper cover of speed changing box (33) consist of the gear switch operating mechanism, consist of the starting control mechanism by the aobvious switch (43) of shelves, it is characterized in that operating handle (1) is connected with operating handle connecting plate (48), operating handle connecting plate (48) is connected with the line shaft connecting plate (49) that line shaft (4) is installed, be sleeved in the right oil sealing hole (77) and right axle sleeve hole (78) that right oil sealing (2) on the line shaft (4) and right axle sleeve (3) be installed in respectively upper cover of speed changing box (33), in the driving lever hole (6) of line shaft (4), driving lever (5) is installed, match with steel ball (110) on the aobvious switches of shelves (43) at line shaft neutral gear groove (50) that line shaft (4) has, spacing collar (7) left end that is sleeved on the line shaft (4) contacts with limit spring (8) right-hand member on being sleeved on line shaft (4), the spacing collar lock groove (55) of spacing collar (7) right-hand member is installed in the driving lever restraining groove (54) of driving lever (5), limit spring (8) left end withstands on the limit spring supporting surface (84) of upper cover of speed changing box (33), line shaft (a 4) left side, right both sides are installed on respectively in the left axle sleeve (40) and in the right axle sleeve (3), left axle sleeve (40) and left oil sealing (41) are installed in respectively in the left axle sleeve hole (83) and left oil sealing hole (82) of upper cover of speed changing box (33); In the front mounting hole (56) of gear shift guide plate (19), rear mounting hole (57) and in the front installation screw (66) in the upper cover of speed changing box (33), rear installation screw (67), be separately installed with front construction bolt (15), front installation bullet pad (16) and rear construction bolt (17), rear installation bullet pad (18), gear shift guide plate (19) is installed in the upper cover of speed changing box (33); Right declutch shift shaft (24) two ends are installed in respectively in the right shift fork axis hole (63) that right declutch shift shaft plug screw (22) is housed on the upper cover of speed changing box (33), in the right shift fork axle bed (76), and left declutch shift shaft (25) two ends are installed in respectively in the left shift fork axis hole (62) that left shift fork plug screw (23) is housed on the upper cover of speed changing box (33), in the left shift fork axle bed (75); The right shift fork axis hole (108) of right shift fork (11) is installed on the right declutch shift shaft (24), the left shift fork axis hole (105) of left shift fork (14) is installed on the left declutch shift shaft (25), in the right shift fork bolt hole (106) of right shift fork (11) neutralizes the right declutch shift shaft bolt hole (92) of right declutch shift shaft (24), right shift fork bolt (9) is installed, right shift fork bullet pad (10), right shift fork (11) is installed on the right declutch shift shaft (24), in the left shift fork bolt hole (103) of left shift fork (14) neutralizes the left declutch shift shaft bolt hole (91) of left declutch shift shaft (25), left shift fork bolt (12) is installed, left shift fork bullet pad (13) is installed on the left declutch shift shaft (25) left shift fork (14); The right bearing pin (28) that installs in the interlocking board slot (88) of interlock board (30) and left bearing pin (29) are installed on respectively in the right pin shaft hole (65) and left pin shaft hole (64) of upper cover of speed changing box (33) simultaneously, interlock board (30) is fitted be installed on the anterointernal interlock board attachment face of upper cover of speed changing box (33) (86), on right bearing pin (28) and left bearing pin (29), be coated with respectively right cotter pin (20) and left cotter pin (21); The shift lever end (53) of driving lever (5) is with left and right the moving axially of line shaft (4), shift lever end (53) can be inserted in the right shift fork shift lever end groove (107) of right shift fork (11), also can be inserted in the left shift fork shift lever end groove (104) of left shift fork (14), driving lever (5) can be placed in 1 grade of hole (58) of gear shift guide plate (19), in reverse gear hole (59) or the 2 grades of holes (60), 3 grades of holes (61).

2. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that the right mounting hole of operating handle connecting plate (46) on the flat operating handle connecting plate (48) that welds together with operating handle (1) one end, the right mounting hole of line shaft connecting plate (51) on the flat line shaft connecting plate (49) that the left mounting hole of operating handle connecting plate (47) neutralization and line shaft (4) weld together, in the left mounting hole of line shaft connecting plate (52), be coated with respectively the right construction bolt of operating handle connecting plate (44), the left construction bolt of operating handle connecting plate (45) makes operating handle connecting plate (48) install with line shaft connecting plate (49) and links together.

3. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, there is circular shift lever end (53) driving lever (5) upper end that it is characterized in that stepped cylindrical shaft, driving lever (5) lower end is inlaid in the driving lever hole (6) of circle of line shaft (4), and the driving lever restraining groove (54) of driving lever (5) bottom indent is installed in the spacing collar lock groove (55) of spacing collar (7) U-shaped.

4. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that in the left side of the left axle sleeve (40) that is sleeved on line shaft (4) left end left oil sealing (41) being arranged, on the right side of the right axle sleeve (3) that is sleeved on line shaft (4) right part right oil sealing (2) is arranged.

5. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, the screw thread axle head that it is characterized in that the aobvious switches of shelves (43) is installed in the aobvious switch mounting holes of shelves (81) in upper cover of speed changing box (33) left side by the aobvious switch spacers of shelves (42) that install additional, and the screw thread axle head of the aobvious switches of shelves (43) has steel ball (110).

6. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that at (33) four jiaos of places of upper cover of speed changing box front right mounting hole (69), rear right mounting hole (71), rear left mounting hole (72) and front left mounting hole (74) being arranged respectively, in above four holes, can be coated with bolt, upper cover of speed changing box (33) is installed on the gear box of tractor; In right back of upper cover of speed changing box (33) and left front right positioning pin hole (70) that has respectively and left positioning pin hole (73), can install respectively right locating stud (32) and left locating stud (31), upper cover of speed changing box (33) positioningly is installed on the gear box of tractor.

7. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that in the left shift fork axis hole (62) of the circle that has with in the right shift fork axis hole (63) left declutch shift shaft (25), left declutch shift shaft plug screw (23) and right declutch shift shaft (24), right declutch shift shaft plug screw (22) being installed respectively in the rectangle declutch shift shaft mounting blocks of left and right two evaginations in upper cover of speed changing box (33) front side.

8. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that being coated with respectively left bearing pin (29) and right bearing pin (28) in the left pin shaft hole (64) that has at middle part, upper cover of speed changing box (33) front side and the right pin shaft hole (65); In the right bearing pin O type ring recess (102) that right bearing pin (28) middle part has, right O type circle (26) is installed, in the right bearing pin pin-and-hole (101) that right bearing pin (28) front portion has, right cotter pin (20) is installed, in the left bearing pin O type ring recess (100) that left bearing pin (29) middle part has, left O type circle (27) is installed, in the left bearing pin pin-and-hole (99) that left bearing pin (29) front portion has, left cotter pin (21) is installed.

9. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that in the right self-locking hole of right declutch shift shaft (79) of upper cover of speed changing box (33), being equipped with from bottom to up right self-locking steel ball (34), right self-locking spring (36) and right self-locking plug screw (38), match with 1 grade of self-locking grooves of right declutch shift shaft (96), right declutch shift shaft neutral gear self-locking grooves (97), the right declutch shift shaft reverse gear self-locking groove (98) at right declutch shift shaft (24) rear portion respectively, realize that 1 grade, neutral gear and reverse gear self-locking switch.

10. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that in the left self-locking hole of left declutch shift shaft (80) of upper cover of speed changing box (33), left self-locking steel ball (35), left self-locking spring (37) and left self-locking plug screw (39) are installed from bottom to up, respectively with 2 grades of self-locking grooves of left declutch shift shaft (93) at left declutch shift shaft (25) rear portion, left declutch shift shaft neutral gear self-locking grooves (94), 3 grades of self-locking grooves of left declutch shift shaft (95) match, and realize 2 grades, neutral gear and 3 grades of self-locking switchings.

11. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that gear shift guide plate (19) is the rectangular flat plate of four rounding of angle, the front mounting hole (56) of gear shift guide plate (19) and rear mounting hole (57) lay respectively at the front and rear of the same center line of forward and backward two mounting holes; The front end of the front and back groove that links to each other with driving lever locating slot (109) right side of gear shift guide plate (19) centre is that 1 grade of hole (58), rear end are reverse gear hole (59), the front end of the front and back groove that links to each other with driving lever locating slot (109) left side is 2 grades of holes (60), the rear end is 3 grades of holes (61), and the front and back groove that driving lever locating slot (109) is connected with its arranged on left and right sides forms whole H shape groove.

12. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that interlock board (30) is the rectangular flat of semicircular arc for two ends, have the interlocking board slot (88) of oval shape at interlock board (30) middle part, right bearing pin (28) and left bearing pin (29) are interlocked in the board slot (88) by vertical respectively being installed on regularly.

13. used with tractor gear switch according to claim 1 is handled and the starting control mechanism, it is characterized in that spacing collar (7) is hollow circular tube shape sleeve, has U-shaped spacing collar lock groove (55) in the sleeve wall of spacing collar (7).

Images