CN1851289A

CN1851289A - mechanical automatic transmission

Info

Publication number: CN1851289A
Application number: CN 200610031724
Authority: CN
Inventors: 龚再清; 黄荣华
Original assignee: ZHONGNAN TRANSMISSION MACHINER
Current assignee: ZHONGNAN TRANSMISSION MACHINER
Priority date: 2006-05-29
Filing date: 2006-05-29
Publication date: 2006-10-25
Anticipated expiration: 2026-05-29
Also published as: CN100501188C

Abstract

A mechanical automatic transmission comprises a speed change transmission device, a gear shift execution mechanism and a clutch execution mechanism, wherein the gear shift execution mechanism comprises a control lever swinging and moving transmission mechanism, a swinging position and moving position detection mechanism and a gear interlocking mechanism which are controlled by a motor and driven by a worm gear, the control lever swinging transmission mechanism is meshed with a driven gear on a control lever through a driving gear, the control lever moving transmission mechanism is connected with a moving connecting groove of the control lever through a moving shifting pin, the control lever swings, the shift position detecting mechanism is connected to the swing and shift detecting connecting slot of the control lever, the gear interlocking mechanism is connected to the driven gear and the shifting blocks of the control lever, the clutch executing mechanism includes one clutch push rod driving mechanism and one clutch position detecting mechanism, and the clutch push rod driving mechanism has push rod capable of swinging the release bearing control rod. The invention has the advantages of simple structure, convenient maintenance, low manufacturing difficulty, high working efficiency and convenient and reliable operation, and can reduce the labor intensity of drivers.

Description

Automatic speed changer for machine

Technical field

The invention belongs to automobile manufacturing field, be specifically related to a kind of mechanical transmission.

Background technique

At present, the speed changer great majority of automobile manufacturing field are the mechanical type manual gear shift, its gear shift action realizes by manual control operating handle, the clutch on-off action realizes by foot treadle, in gear shift and clutch action process, the driver needs skilled control operating handle and clutch pedal.Major defect is that manipulation is frequent, labor intensity is high.The self-shifting gear box major part that adopts on some high-grade buses is hydraudynamic drive self-shifting gear box (AT), and its major defect is that efficient is low, energy consumption is high, maintenance and assembling are poor.

Summary of the invention

Technical problem to be solved by this invention is the deficiency that overcomes above-mentioned present technology, provides a kind of simple in structure, easy to maintenance, and manufacture difficulty is lower, high working efficiency, and convenient and reliable operation, and alleviate the automatic speed changer for machine of driver's labor intensity.

The technical solution adopted for the present invention to solve the technical problems is: automatic speed changer for machine of the present invention, comprise variable speed drive, gear-shifting actuating mechanism and clutch actuating mechanism, it is characterized in that: described gear-shifting actuating mechanism comprises casing, be installed in the operating handle in the casing, by motor-driven operating handle swinging transmission mechanism, by motor-driven operating handle movement and transmission mechanism, operating handle swing position feeler mechanism, operating handle mobile position feeler mechanism and gear mutual interlocking gear, be arranged with the top gear shifting block on the operating handle, the bottom gear shifting block and more than one in the bay shifting block, be equipped with the finger groove in the endoporus of each shifting block, be equiped with the finger that places described finger groove on the operating handle, every middle bay shifting block is connected with bay connecting rod in, the bottom gear shifting block is connected with the bottom gear connecting rod, also be fixed with driven gear on the operating handle, and be provided with mobile connecting groove, swing detection connecting groove and the mobile connecting groove that detects, the operating handle swinging transmission mechanism is meshed with set driven gear on the operating handle by set driving gear on it, the operating handle movement and transmission mechanism is connected with mobile connecting groove by set mobile finger on it, operating handle swing position feeler mechanism is connected with the swing detection connecting groove, operating handle mobile position feeler mechanism is connected with the mobile connecting groove that detects, described casing is fixedlyed connected with the main casing of variable speed drive, the top gear shifting block is connected with the high speed shift fork of variable speed drive by the set bulb in its end, bulb inserts in the set dial hole of high speed shift fork, every mid ranger shifting block links to each other with the middling speed shift fork of variable speed drive by middle bay connecting rod, and the bottom gear shifting block is connected with the low speed shift fork of variable speed drive by the bottom gear connecting rod; Described gear mutual interlocking gear is loaded on the casing and joins with driven gear, top gear shifting block and middle bay shifting block and bottom gear shifting block on the operating handle, described clutch actuating mechanism comprises by motor-driven clutch push rod driving mechanism and clutch position feeler mechanism, the clutch push rod driving mechanism is provided with the push rod of the release bearing controlling rod swing that can make variable speed drive, and described push rod and release bearing controlling rod join; Described clutch position feeler mechanism is connected with the release bearing controlling rod.

As a further improvement on the present invention, the described operating handle swinging transmission mechanism that is provided with driving gear comprises first motor, first worm screw, first worm gear, first worm-wheel shaft and driving gear, first motor is fixed on the casing, first worm screw and first worm-wheel shaft are supported in the casing, the output terminal of first motor and first worm screw link, first worm screw is meshed with first worm gear, first worm gear is fixedlyed connected with first worm-wheel shaft, and the driving gear that is meshed with set driven gear on the operating handle is installed on first worm-wheel shaft; The described operating handle movement and transmission mechanism that is provided with mobile finger comprises second motor, second worm screw, second worm-wheel shaft, second worm gear, shift fork and mobile finger, second motor is fixed on the casing, second worm screw and second worm-wheel shaft all are supported in the casing, the output terminal of second motor and second worm screw link, second worm screw is meshed with second worm gear on being installed in second worm-wheel shaft, shift fork is installed on second worm-wheel shaft, and mobile finger is loaded on the shift fork and inserts in the mobile connecting groove that is located on the operating handle; Described gear mutual interlocking gear comprises tappet, described tappet is loaded in the hole of casing, and can in this hole, slide, the tappet intermediate portion is provided with and connects groove and locking groove, the outside of the driven gear on the operating handle is inserted and is connected in the groove, one side of top gear shifting block, middle bay shifting block and bottom gear shifting block is respectively equipped with a concave circular arc that may be stuck on the external cylindrical surface of tappet, and forms lug boss in the both sides of concave circular arc.Described operating handle swing position feeler mechanism comprises lid, first displacement transducer, first sensor transmission shaft and the first sensing pin, described first displacement transducer is fixed in covering of fixedlying connected with casing, and be connected with the first sensor transmission shaft, the first sensor transmission shaft is provided with the first sensing pin, and this first sensing pin inserts in the set swing detection connecting groove in operating handle end and can axially slide in the swing detection connecting groove; Described operating handle mobile position feeler mechanism comprises second displacement transducer, the second sensor transmission shaft, driving lever and the second sensing pin, second displacement transducer is fixedlyed connected with casing, and be connected with the second sensor transmission shaft, one end, driving lever is fixed in the other end of the second sensor transmission shaft, driving lever is provided with the second sensing pin, and the second sensing pin inserts in the set mobile detection connecting groove in operating handle end.The described clutch push rod driving mechanism B1 that is provided with push rod also comprises the clutch actuating mechanism housing, clutch motor, the clutch worm screw, the clutch worm gear, gear shaft and tooth bar, described clutch actuating mechanism housing is fixedlyed connected with the main casing of variable speed drive, clutch motor is fixedlyed connected with the clutch actuating mechanism housing, the output terminal of clutch motor and clutch worm screw link, the clutch worm screw is bearing on the clutch actuating mechanism housing and with the clutch worm gear and is meshed, the clutch worm gear is loaded on the gear shaft, gear shaft is supported on the clutch actuating mechanism housing and with tooth bar and is meshed, tooth bar is loaded on the push rod, and the push rod that is connected with the release bearing controlling rod is bearing on the clutch actuating mechanism housing.Described push rod end can be connected with connecting sleeve, and the end that release bearing controlling rod and push rod join is provided with arc surface, and push rod joins by the arc surface of connecting sleeve and release bearing controlling rod.Described clutch position feeler mechanism comprises clutch displacement sensor and sensor transmission shaft, and clutch displacement sensor is fixed on the clutch housing, and is connected with the sensor transmission shaft, and the sensor transmission shaft is connected with the end of release bearing controlling rod.

Described clutch push rod driving mechanism also can be connected with spring assist mechanism, described spring assist mechanism comprises power assistant spring, spring mounting seat and power-assisted connecting rod, power assistant spring one end is fixed on the spring mounting seat, the power assistant spring the other end links to each other with an end of power-assisted connecting rod, the other end of power-assisted connecting rod links to each other with push rod, spring mounting seat is fixed on the main casing of variable speed drive, and the middle part of power-assisted connecting rod is bearing on the main casing of variable speed drive.On the described spring mounting seat stretching screw can be housed, by being threaded the spring pull bar be housed on the stretching screw, an end of power assistant spring is fixed on the spring pull bar.

Also can be arranged with swing position sensor block and mobile position induction coil on the described operating handle, the mobile position induction coil is installed on the operating handle, the swing position sensor block is connected for moving to axial with operating handle, be equiped with on the operating handle and can make the sensor block finger of swing position sensor block with the operating handle swing, described swing position sensor block is provided with three straight boss of the direction that parallels to the axis, be provided with and the top gear shifting block perpendicular to axial direction on the induction coil of mobile position, bottom gear shifting block and the annular boss that middle bay shifting block quantity equates more than, on casing, be provided with swing position switch and mobile position switch, the swing position switch is positioned at the position relative with the swing position sensor block, and the mobile position switch is positioned at the position relative with the mobile position induction coil.

On the main casing of variable speed drive, be equiped with the locating stud fitting seat with each synchronizer corresponding position of variable speed drive, be equiped with in each locating stud fitting seat endoporus can be in locating stud fitting seat endoporus axially movable synchronizer meta locating stud, be arranged with retaining spring on the synchronizer meta locating stud, synchronizer meta locating stud end is provided with bulb, is equipped with the taper hole that can match with bulb on high speed shift fork, middling speed shift fork and the low speed shift fork.

Beneficial effect of the present invention is: automatic speed changer for machine of the present invention is simple in structure, and is easy to maintenance, and manufacture difficulty is lower, high working efficiency, can remove from and adopt the pin stepping on clutch to spoil plate action and manual joystick gear shift action, convenient and reliable operation, and alleviated driver's labor intensity.Adopt Worm and worm-wheel gearing in operating handle swinging transmission mechanism, operating handle movement and transmission mechanism, the clutch actuating mechanism, can after each action is finished, realize the locking of mechanism kinematic.Gear-shifting actuating mechanism and clutch actuating mechanism are by motor driving, and adopted displacement transducer detect respectively operating handle swing position, operating handle move axially position and clutch in conjunction with and the disengaging configuration, be convenient to combine and realize electronic intelligence control with electronic control system.The present invention also can be provided with spring assist mechanism, to reduce clutch motor power.Enforcement of the present invention has positive economic benefit and social benefit.

Description of drawings

Fig. 1 is construction profile figure of the present invention;

Fig. 2 is that the W of Fig. 1 is to view;

Fig. 3 is the A-A sectional view of Fig. 1;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the C-C sectional view of Fig. 3;

Fig. 6 is the C1-C1 sectional view of Fig. 3;

Fig. 7 is the D-D sectional view of Fig. 3;

Fig. 8 is the F-F sectional view of Fig. 7;

Fig. 9 is the H-H sectional view of Fig. 7;

Figure 10 is the G-G sectional view of Fig. 1;

Figure 11 is the X-X sectional view of Figure 10;

Figure 12 is the J-J sectional view of Fig. 1;

Figure 13 is the K-K sectional view of Fig. 1;

Figure 14 is the L-L sectional view of Fig. 1;

Figure 15 is the N-N sectional view of Fig. 2;

Figure 16 is the Q1-Q1 sectional view of Figure 15;

Figure 17 is the Q2-Q2 sectional view of Figure 15;

Figure 18 is the Q3-Q3 sectional view of Figure 15;

Figure 19 is the Q4-Q4 sectional view of Figure 15;

Figure 20 is a structure principle chart of the present invention.

Embodiment

Speed changer with six gears is an example below, and the invention will be further described.Wherein middle bay shifting block and middle bay connecting rod have only each one, are respectively two/three fast shifting blocks 109 and two/three fast connecting rods 111.

Shown in Fig. 1,2,20, automatic speed changer for machine of the present invention comprises: variable speed drive 3, gear-shifting actuating mechanism 1 and clutch actuating mechanism 2.As Fig. 2, shown in the 15-19, variable speed drive 3 mainly comprises main casing 301, clutch housing 302, declutch shaft bearing 303, clutch release bearing 304, input shaft 305, clutch 306, disengaging yoke 307, release bearing controlling rod 308, high speed synchroniser 309, high speed shift fork 311, two/three fast shift forks 313, two/three fast synchronizers 314, low speed shift fork 317, low speed synchronizer 318, fourth speed position driving gear 310, third gear driving gear 312, the second gear driving gear 315, the first gear driving gear 316, reverse gear driving gear 319, output shaft 320, idle gear 321, bonnet 322, intermediate gear shaft 323, second intermediate gear 324, the 3rd intermediate gear 325, the 4th intermediate gear 326, driving gear 327, vehicle speed sensor 334, vehicle speed sensor driving gear 335 and vehicle speed sensor driven gear 336.Clutch housing 302 is fixedlyed connected with main casing 301 by bolt, declutch shaft bearing 303 is fixedlyed connected with main casing 301 by bolt, clutch release bearing 304 is sleeved on the declutch shaft bearing 303, release bearing controlling rod 308 is bearing on the clutch housing 302 by two rolling bearings, and fixedly connected the arc surface 3071 and clutch release bearing 304 Transverse planes of disengaging yoke 307 join (seeing Figure 15) with disengaging yoke 307 by bolt.Input shaft 305 is bearing on the main casing 301 by bearing, the left end of input shaft 305 is provided with spline, this left end passes and stretches out the endoporus of declutch shaft bearing 303, clutch 306 is installed on the left end of input shaft 305 by spline, intermediate gear shaft 323 is supported on the main casing 301 by bearing, be fixed with second intermediate gear 324 on it, the 3rd intermediate gear 325, the 4th intermediate gear 326 and driving gear 327, one end of output shaft 320 is supported in the set endoporus in input shaft 305 right parts by bearing, the other end is bearing on the main casing 301 by bearing, be fixed with high speed synchroniser 309 on the output shaft 320, two/three fast synchronizer 314 and low speed synchronizers 318, fourth speed position driving gear 310, third gear driving gear 312, the second gear driving gear 315, the first gear driving gear 316 and reverse gear driving gear 319 all are bearing on the output shaft 320 by bearing, set gear of input shaft 305 right-hand members and driving gear 327 engagements, the 4th intermediate gear 326 and 310 engagements of fourth speed position driving gear, the 3rd intermediate gear 325 and 312 engagements of third gear driving gear, second intermediate gear 324 and 315 engagements of the second gear driving gear, the set gear of intermediate gear shaft 323 right-hand members meshes with the first gear driving gear 316 and idle gear 321 respectively, idle gear 321 also meshes (seeing Figure 19) with reverse gear driving gear 319, the idler shaft 341 of idle gear 321 is supported on the main casing 301 by bearing, vehicle speed sensor driving gear 335 is installed on the output shaft 320, and with vehicle speed sensor driven gear 336 engagement (see figure 2)s, vehicle speed sensor driven gear 336 is supported in the sensor fitting seat 343 set endoporus by gear shaft, sensor fitting seat 343 is installed in the bonnet 322 set endoporus, and fixedly connected (see figure 2) with bonnet 322 by Cock screw 344, the outer termination vehicle speed sensor 334 of vehicle speed sensor driven gear 336, bonnet 322 is fixedlyed connected with main casing 301 by bolt, three pairs of shift fork mount pins 328 are individually fixed on main casing 301 and each synchronizer corresponding position by screw thread, high speed shift fork 311 is loaded on the shift fork mount pin 328 and can rotates (Figure 18) around shift fork mount pin 328, high speed shift fork 311 links to each other by synchronizer shifting block 330 with high speed synchroniser 309, two/three fast shift forks 313 are loaded on the shift fork mount pin 328 and can rotate around shift fork mount pin 328, two/three fast shift forks 313 and two/three fast synchronizers 314 are by synchronizer shifting block 330 link to each other (Figure 17), low speed shift fork 317 is loaded on the shift fork mount pin 328 and can rotates around shift fork mount pin 328, and low speed shift fork 317 and low speed synchronizer 318 are by synchronizer shifting block 330 link to each other (Figure 16).

Shown in Fig. 3-9, gear-shifting actuating mechanism 1 comprises casing 115, be installed in the operating handle 106 in the casing 115, by motor-driven operating handle swinging transmission mechanism A1, by motor-driven operating handle movement and transmission mechanism A2, the operating handle swing position A3 of feeler mechanism, operating handle mobile position A4 of feeler mechanism and gear mutual interlocking gear A5, casing 115 is fixedlyed connected (seeing Fig. 1 and Figure 15) with the main casing 301 of variable speed drive 3, be arranged with top gear shifting block 108 on the operating handle 106, bottom gear shifting block 110 and two/three fast shifting blocks 109, be equipped with finger groove 1083 in the endoporus of each shifting block, be equiped with the finger 107 that places finger groove 1083 (see figure 6)s on the operating handle 106, finger 107 can move around in the finger groove 1083 of each shifting block, two/three fast shifting blocks 109 are connected with two/three fast connecting rods 111, bottom gear shifting block 110 is connected with bottom gear connecting rod 112 and (sees Fig. 5,7), set shifting block cylndrical surface 1091 is hinged mutually on two/three fast connecting rods 111 and two/three fast shifting blocks 109, set shifting block cylndrical surface 1091 (see figure 6) that is hinged mutually on bottom gear connecting rod 112 and the bottom gear shifting block 110, two/three fast connecting rods 111 and bottom gear connecting rod 112 respectively can be around the shifting block cylndrical surface 1091 rotates, top gear shifting block 108 its ends are provided with bulb 1084 (see figure 5)s, top gear shifting block 108 is connected (referring to Figure 15 with the top gear shift fork 311 of variable speed drive 3 by this bulb 1084,18), bulb 1084 inserts in the high speed shift fork 311 set dial holes 3111, two/three fast shifting blocks 109 link to each other with two/three fast shift forks 313 of variable speed drive 3 by two/three fast connecting rods 111 and (see Figure 15,17), bottom gear shifting block 110 is connected with the low speed shift fork 317 of variable speed drive 3 by bottom gear connecting rod 112 and (sees Figure 15,16).Also be fixed with driven gear 105 on the operating handle 106, and be provided with mobile connecting groove 1061, swing detection connecting groove 1062 and move detection connecting groove 1063.As Fig. 3, shown in 4, operating handle swinging transmission mechanism A1 comprises first motor 116, first worm screw 101, first worm gear 102, first worm-wheel shaft 103 and driving gear 104, first motor 116 by bolt on casing 115, first worm screw 101 and first worm-wheel shaft 103 are supported in the casing 115 by bearing, the output terminal of first motor 116 links by the key and first worm screw 101, first worm screw 101 is meshed with first worm gear 102, first worm gear 102 is loaded on first worm-wheel shaft 103 also fixedly connected by an elastic cylindrical pin, driving gear 104 is installed on first worm-wheel shaft 103 by key connecting, and is meshed with set driven gear 105 on the operating handle 106.When 116 energisings of first motor, drive first worm screw 101, first worm gear 102, first worm-wheel shaft 103, driving gear 104, driven gear 105, operating handle 106 according to this, the finger 107 on the operating handle 106 drives the gear synchronizer execution gear shift bit motion that each shifting block drives variable speed drive 3.

As Fig. 3,4, shown in 5, operating handle movement and transmission mechanism A2 comprises second motor 118, second worm screw 117, second worm-wheel shaft 113, second worm gear 114, shift fork 119 and mobile finger 136, second motor 118 by bolt on casing 115, second worm screw 117 and second worm-wheel shaft 113 all are supported in the casing 115 by bearing, the output terminal of second motor 118 links by the key and second worm screw 117, second worm gear 114 is loaded on a side on second worm-wheel shaft 113, and by the fixedly connected (see figure 5) of an elastic cylindrical pin, second worm screw 117 is meshed with second worm gear 114, shift fork 119 is installed in opposite side on second worm-wheel shaft 113 by pin, operating handle 106 is provided with dial sleeve 1064, mobile connecting groove 1061 is opened on the dial sleeve 1064, mobile finger 136 is loaded on the shift fork 119 and inserts (see figure 5) in the mobile connecting groove 1061 that is located on the operating handle 106, can drive operating handle 106 and move axially.When 118 energisings of second motor, drive second worm screw 117, second worm-wheel shaft 113, second worm gear 114 successively, make shift fork 119 swings, therefore driving operating handle 106 moves and carries out the action of changing shifting block, when second motor 118 drives operating handles 106 and makes finger 107 on the operating handle move in the finger groove 1083 of one of them shifting block, just realize the action of changing shifting block between the finger groove 1083 of top gear shifting block 108, two/three fast shifting blocks 109 and bottom gear shifting block 110.For with the different embodiment of six gear gears of present embodiment, in can changing in bay shifting block, middle bay connecting rod and the gearbox quantity of shift fork carry out the automaitc shfit of corresponding gear.

As Fig. 3,7, shown in 8, the operating handle swing position A3 of feeler mechanism comprises and covers 134, first displacement transducer 131, the first sensor transmission shaft 122 and the first sensing pin 123, first displacement transducer 131 by bolt in lid 134 that casing 115 is fixedlyed connected on, and be connected with first sensor transmission shaft 122 by pin, first sensor transmission shaft 122 is provided with the first sensing pin 123, this first sensing pin 123 inserts in the set swing detection connecting groove 1062 in operating handle 106 ends, this swing detection connecting groove 1062 is a straight trough, and the first sensing pin 123 can axially slide in this straight trough 1062; When operating handle 106 swing, drive the first sensing pin 123 successively, first sensor transmission shaft 122 rotates, the swing position signal of operating handle 106 is passed to first displacement transducer 131.The operating handle mobile position A4 of feeler mechanism comprises second displacement transducer 129, the second sensor transmission shaft 132, the driving lever 130 and the second sensing pin 133, second displacement transducer 129 is fixedlyed connected with casing 115 by bolt, and be connected by elastic cylindrical pin with the second sensor transmission shaft, 132 1 ends, driving lever 130 is fixed in the other end of the second sensor transmission shaft 132, driving lever 130 is provided with the second sensing pin 133, operating handle 106 ends are arranged with the second sensing dial sleeve 139, moving detection connecting groove 1063 is opened on the second sensing dial sleeve 139, the second sensing pin 133 inserts to move and detects in the connecting groove 1063, moving and detecting connecting groove 1063 is an annular groove, and the second sensing pin 133 can slide in this annular groove.When operating handle 106 moves axially, drive the second sensing pin 133, driving lever 130, the second sensor transmission shaft 132 successively and move, the position signal that moves axially of operating handle 106 is passed to second displacement transducer 129.

As Fig. 3,6, shown in 7, gear mutual interlocking gear A5 comprises a tappet 120, tappet 120 is loaded in the hole 1151 of casing 115, and can in this hole 1151, slide, tappet 120 intermediate portions are provided with and connect groove 1201 and locking groove 1202, the outside of the driven gear 105 on the operating handle 106 is inserted and is connected in the groove 1201, operating handle 106 can drive the same together moved further of tappet 120 by the outside of driven gear 105, top gear shifting block 108, one side of two/three fast shifting blocks 109 and bottom gear shifting block 110 is respectively equipped with a concave circular arc 1081 that may be stuck on the external cylindrical surface of tappet 120, and at the both sides of concave circular arc 1081 formation lug boss 1082 (shown in Figure 6), when tappet 120 moves to its locking groove 1202 and the top gear shifting block 108 that is sleeved on the operating handle 106,1081 pairs of timings of concave circular arc of one of them shifting block in two/three fast shifting blocks 109 and the bottom gear shifting block 110, the finger 107 that is fixed on the operating handle 106 slips in the finger groove 1083 of this shifting block just, the locking groove 1202 that this moment, lug boss 1082 just can pass on the tappet 120 makes this shifting block around operating handle 106 axis swings, and all the other shifting blocks are blocked and can not swing by the cylndrical surface of tappet 120, therefore play the effect of gear interlocking.

As Figure 10-14, shown in 20, clutch actuating mechanism 2 comprises by motor-driven clutch push rod driving mechanism B1 and the B2 of clutch position feeler mechanism, clutch push rod driving mechanism B1 is provided with the push rod 204 of release bearing controlling rod 308 swings that can make variable speed drive 3, push rod 204 is connected with release bearing controlling rod 308 1 ends, the B2 of clutch position feeler mechanism then links to each other with the other end of release bearing controlling rod 308, clutch push rod driving mechanism B1 also comprises clutch actuating mechanism housing 207, clutch motor 201, clutch worm screw 202, clutch worm gear 205, gear shaft 206 and tooth bar 203, clutch actuating mechanism housing 207 is fixedlyed connected (see figure 10) with the main casing 301 of variable speed drive 3, clutch motor 201 is fixedlyed connected with clutch actuating mechanism housing 207 by bolt, the output terminal of clutch motor 201 links by key and clutch worm screw 202, clutch worm screw 202 is bearing on the clutch actuating mechanism housing 207 and with clutch worm gear 205 by ball bearing and is meshed, clutch worm gear 205 is loaded on the gear shaft 206 by key, gear shaft 206 is supported on the clutch actuating mechanism housing 207 by bearing, and be meshed with tooth bar 203, tooth bar 203 is loaded on the push rod 204 and by pin and fixes, and push rod 204 passes through two sliding supported conditions on clutch actuating mechanism housing 207.Push rod 204 ends are connected with connecting sleeve 208, and release bearing controlling rod 308 is provided with arc surface 3081 (Figure 11) with the end that push rod 204 joins, and push rod 204 joins by the arc surface 3081 of connecting sleeve 208 with release bearing controlling rod 308.When clutch motor 201 energisings, drive clutch worm screw 202, clutch worm gear 205, gear shaft 206, tooth bar 203 successively, make push rod 204 moving linearlies, drive 308 swings of release bearing controlling rod, release bearing controlling rod 308 drives disengaging yoke 307, clutch release bearing 304, carries out clutch combination and separating action.

As shown in figure 14, the B2 of clutch position feeler mechanism comprises clutch displacement sensor 213, sensor transmission shaft 212 and sensing pin 211, clutch displacement sensor 213 is fixed on the clutch housing 302, and be connected with sensor transmission shaft 212 by pin, sensor transmission shaft 212 is provided with sensing pin 211, the end end that release bearing controlling rod 308 links to each other with the B2 of clutch position feeler mechanism offers detects connecting groove 3082, sensor transmission shaft 212 is gone into to detect in the connecting groove 3082 by set sensing pin 211 plug-in mountings on it and is linked to each other with release bearing controlling rod 308, release bearing controlling rod 308 can be swung around the center, when 308 swings of release bearing controlling rod, drive sensing pin 211 successively, sensor transmission shaft 212 rotates, and the clutch position signal is passed to clutch displacement sensor 213.

As Fig. 1,11,12,13, shown in 20, clutch push rod driving mechanism B1 also links to each other with a B3 of spring assist mechanism, as Figure 11,12, shown in 13, the B3 of spring assist mechanism comprises power assistant spring 221, spring mounting seat 225 and power-assisted connecting rod 222, one stretching screw 223 is housed on the spring mounting seat 225, spring pull bar 224 is housed on the stretching screw 223, both are by being threaded, power assistant spring 221 1 ends are fixed on the spring pull bar 224, the other end is loaded on the spring connecting rod 220, can be by the position of Regulation spring pull bar 224 with respect to stretching screw 223, regulate the elastic force of power assistant spring 221,220 of spring connecting rods are loaded on an end of power-assisted connecting rod 222, the other end of power-assisted connecting rod 222 is by the power-assisted connecting rod finger 226 (Fig. 1 that links to each other with push rod 204,11), spring mounting seat 225 is fixed on the main casing 301 of variable speed drive 3, and the middle part of power-assisted connecting rod 222 also is supported on the main casing 301 of variable speed drive 3 by power-assisted link supporting seat 227.Power assistant spring 221 applies a thrust Fa (seeing Figure 11) for push rod 204 by power-assisted connecting rod 222 and power-assisted connecting rod finger 226, this power only acts on push rod 204 and helps clutch motor 201 to promote push rod 204, when clutch motor 201 is carried out the clutch separation action, the driving force from the thrust Fa of power assistant spring 221 and clutch motor 201 that push rod 204 is subjected to overcomes the Separating force F from clutch jointly, the thrust Fa that passes to push rod 204 owing to power assistant spring 221 is opposite with the Separating force F direction that clutch imposes on push rod 204, has the effect that clutch imposes on the Separating force F of push rod 204 of offsetting, therefore the axial force that required clutch motor 201 applies for push rod 204 by worm and gear and pinion and rack is less, helpful clutch motor 201 is carried out the effect of clutch separation action, can reduce the power of clutch motor 201.

As Fig. 3,7, shown in 9, on operating handle 106, be arranged with swing position sensor block 125 and mobile position induction coil 127, mobile position induction coil 127 is installed on the operating handle 106, swing position sensor block 125 is a Spielpassung with operating handle 106, operating handle 106 swing position sensor block 125 relatively moves axially, be provided with finger groove 1252 in the endoporus of swing position sensor block 125, be equiped with sensor block finger 138 on the operating handle 106, sensor block finger 138 inserts in the finger groove 1252, can in finger groove 1252, move, when operating handle 106 rotates, sensor block finger 138 can drive swing position sensor block 125 and rotate together, when operating handle 106 moved, operating handle 106 moved in the endoporus of swing position sensor block 125 together with sensor block finger 138, and swing position sensor block 125 is motionless.Swing position sensor block 125 is provided with three straight boss 1251 of the direction that parallels to the axis, be provided with three annular boss 1271 perpendicular to axial direction on the mobile position induction coil 127, swing position switch 128 and mobile position switch 126 are housed on casing 115, swing position switch 128 is positioned at the position relative with swing position sensor block 125, and mobile position switch 126 is positioned at the position relative with mobile position induction coil 127.When operating handle 106 swings, set sensor block finger 138 drives 125 swings of swing position sensor block on the operating handle 106, when swing position sensor block 125 swings to set three straight boss 1,251 one and 128 pairs of timings of swing position switch wherein on it, swing position switch 128 is opened, therefore send the signal that gear puts in place, when operating handle 106 moves, set mobile position induction coil 127 is with operating handle 106 same moved further on the operating handle 106, when mobile position induction coil 127 moves to set three annular boss 1,271 one and 126 pairs of timings of mobile position switch wherein on it, mobile position switch 126 is opened, therefore send and change the signal that the shifting block action puts in place, can judge so that to the gear diagnosing malfunction gear positions.Shown in Fig. 1,5,7, also be provided with gear indicator light switch 121 in casing 115 sides, this gear indicator light switch 121 is by push rod 124 (see figure 7) that links to each other with swing position sensor block 125, also be provided with reverse gear lamp switch 135 at casing 115 end faces, this reverse gear lamp switch 135 and bottom gear connecting rod 112 (see figure 4) of joining.

As Figure 16,17, shown in 18, on the main casing 301 of variable speed drive 3, also be equiped with three pairs of locating stud fitting seats 331 with each synchronizer corresponding position of variable speed drive 3 by screw thread, be equiped with in each locating stud fitting seat 331 endoporus one can be in locating stud fitting seat 331 endoporus axially movable synchronizer meta locating stud 329, be arranged with retaining spring 332 on the synchronizer meta locating stud 329, retaining spring 332 is positioned between the synchronizer meta locating stud 329 set shaft shoulders and locating stud fitting seat 331 endoporus, synchronizer meta locating stud 329 ends are provided with bulb 3291, high speed shift fork 311, be equipped with the taper hole that can match with bulb 3291 on two/three fast shift forks 313 and the low speed shift fork 317.When each synchronizer was in neutral position, each set bulb 3291 in synchronizer meta locating stud 329 ends slipped in the set taper hole of each shift fork, can make synchronizer remain on neutral position, automatically accurate centering.

Among the present invention, operating handle swinging transmission mechanism A1, operating handle movement and transmission mechanism A2 and clutch push rod driving mechanism B1 all adopt motor to drive, by first motor 16 among the operating handle swinging transmission mechanism A1, second motor 18 and clutch motor 201 among the operating handle movement and transmission mechanism A2 are pressed the execution sequence coordination, and by the operating handle swing position A3 of feeler mechanism, operating handle mobile position A4 of feeler mechanism and the B2 of clutch position feeler mechanism detect the swing position of operating handle respectively, the position of axial position and clutch, and carry out the gear information transmission, electronic control be can realize easily, can control synchro and clutch coordination be come by the execution sequence that electronic program is set.Adopt Worm and worm-wheel gearing in each mechanism, can after each action is finished, realize the locking of mechanism kinematic.

Working principle of the present invention is as follows: after the present invention receives shift signal, at first be the clutch motor 201 driving push rods 204 promotion clutch release bearings 106 execution clutch separation actions among the clutch actuating mechanism B1, be that operating handle swinging transmission mechanism A1 in the gear-shifting actuating mechanism 1 drives the gear synchronizer and is in meta then, be that operating handle movement and transmission mechanism A2 drives finger 107 on the operating handle 106 at top gear shifting block 108 again, when moving in the finger groove 1083 of one of them shifting block between the finger groove 1083 of two/three fast shifting blocks 109 and bottom gear shifting block 110, just realize the action change shifting block, be that operating handle swinging transmission mechanism A1 driving gear synchronizer is in the gear positions that will choose again, be that clutch motor 201 among the clutch actuating mechanism B1 drives push rods 204 and clutch release bearing 304 is return and carried out clutch in conjunction with action at last, this moment, power was passed to input shaft 305 from motor through clutch 306, when high speed synchroniser 309 left ends in conjunction with the time, power is directly passed to output shaft 320 from input shaft 305, when high speed synchroniser 309 right-hand members in conjunction with the time, power is passed to driving gear 327 successively from input shaft 305, the 4th intermediate gear 326, fourth speed position driving gear 310, output shaft 320, when two/three fast synchronizer 314 left ends in conjunction with the time, power is passed to driving gear 327 successively from input shaft 305, the 3rd intermediate gear 325, third gear driving gear 312, output shaft 320, when two/three fast synchronizer 314 right-hand members in conjunction with the time, power is passed to driving gear 327 successively from input shaft 305, second intermediate gear 324, the second gear driving gear 315, output shaft 320, when low speed synchronizer 318 left ends in conjunction with the time, power is passed to driving gear 327 successively from input shaft 305, intermediate gear shaft 323, the first gear driving gear 316, output shaft 320, when low speed synchronizer 318 right-hand members in conjunction with the time, power is passed to driving gear 327 successively from input shaft 305, intermediate gear shaft 323, idle gear 321, reverse gear driving gear 319, output shaft 320, gear-shifting actuating mechanism 1 carry out gear shift and change the shifting block action and clutch actuating mechanism 2 carry out clutches in conjunction with separating action in, the operating handle swing position A3 of feeler mechanism of operating handle and joystick shaft are exported detected gear positions and push rod position signal to A4 of mobile position feeler mechanism and the B2 of clutch position feeler mechanism.

Claims

1, a kind of automatic speed changer for machine, comprise variable speed drive (3), gear-shifting actuating mechanism (1) and clutch actuating mechanism (2), it is characterized in that: described gear-shifting actuating mechanism (1) comprises casing (115), be installed in the operating handle (106) in the casing (115), by motor-driven operating handle swinging transmission mechanism (A1), by motor-driven operating handle movement and transmission mechanism (A2), operating handle swing position feeler mechanism (A3), operating handle mobile position feeler mechanism (A4) and gear mutual interlocking gear (A5), be arranged with top gear shifting block (108) on the operating handle (106), bottom gear shifting block (110) and more than one in the bay shifting block, be equipped with finger groove (1083) in the endoporus of each shifting block, be equiped with the finger (107) that places described finger groove (1083) on the operating handle (106), every middle bay shifting block is connected with bay connecting rod in, bottom gear shifting block (110) is connected with bottom gear connecting rod (112), also be fixed with driven gear (105) on the operating handle (106), and be provided with mobile connecting groove (1061), swing detection connecting groove (1062) and the mobile connecting groove (1063) that detects, operating handle swinging transmission mechanism (A1) is gone up set driven gear (105) by set driving gear (104) on it and operating handle (106) and is meshed, operating handle movement and transmission mechanism (A2) is connected with mobile connecting groove (1061) by set mobile finger (136) on it, operating handle swing position feeler mechanism (A3) is connected with swing detection connecting groove (1062), operating handle mobile position feeler mechanism (A4) is connected with the mobile connecting groove (1063) that detects, described casing (115) is fixedlyed connected with the main casing (301) of variable speed drive (3), top gear shifting block (108) is connected with the high speed shift fork (311) of variable speed drive (3) by the set bulb in its end (1084), bulb (1084) inserts in the set dial hole of high speed shift fork (311) (3111), every mid ranger shifting block links to each other by the middling speed shift fork of middle bay connecting rod with variable speed drive (3), and bottom gear shifting block (110) is connected with the low speed shift fork (317) of variable speed drive (3) by bottom gear connecting rod (112); Described gear mutual interlocking gear (A5) is loaded on that casing (115) is gone up and joins with driven gear (105), top gear shifting block (108) and middle bay shifting block and bottom gear shifting block (110) on the operating handle (106), described clutch actuating mechanism (2) comprises by motor-driven clutch push rod driving mechanism (B1) and clutch position feeler mechanism (B2), clutch push rod driving mechanism (B1) is provided with the push rod (204) of release bearing controlling rod (308) swing that can make variable speed drive (3), and described push rod (204) joins with release bearing controlling rod (308); Described clutch position feeler mechanism (B2) is connected with release bearing controlling rod (308).

2, automatic speed changer for machine according to claim 1, it is characterized in that the described operating handle swinging transmission mechanism (A1) that is provided with driving gear (104) comprises first motor (116), first worm screw (101), first worm gear (102), first worm-wheel shaft (103) and driving gear (104), first motor (116) is fixed on the casing (115), first worm screw (101) and first worm-wheel shaft (103) are supported in the casing (115), the output terminal of first motor (116) and first worm screw (101) link, first worm screw (101) is meshed with first worm gear (102), first worm gear (102) is fixedlyed connected with first worm-wheel shaft (103), and the driving gear (104) that is meshed with the last set driven gear (105) of operating handle (106) is installed on first worm-wheel shaft (103); The described operating handle movement and transmission mechanism (A2) that is provided with mobile finger (136) comprises second motor (118), second worm screw (117), second worm-wheel shaft (113), second worm gear (114), shift fork (119) and mobile finger (136), second motor (118) is fixed on the casing (115), second worm screw (117) and second worm-wheel shaft (113) all are supported in the casing (115), the output terminal of second motor (118) and second worm screw (117) link, second worm screw (117) is meshed with second worm gear (114) on being installed in second worm-wheel shaft (113), shift fork (119) is installed on second worm-wheel shaft (113), and mobile finger (136) is loaded on shift fork (119) and goes up and insert in the mobile connecting groove (1061) that is located on the operating handle (106); Described gear mutual interlocking gear (A5) comprises tappet (120), described tappet (120) is loaded in the hole (1151) of casing (115), and can in this hole (1151), slide, tappet (120) intermediate portion is provided with and connects groove (1201) and locking groove (1202), the outside of the driven gear (105) on the operating handle (106) is inserted and is connected in the groove (1201), top gear shifting block (108), in a side of bay shifting block and bottom gear shifting block (110) be respectively equipped with a concave circular arc (1081) that may be stuck on the external cylindrical surface of tappet (120), and form lug boss (1082) in the both sides of concave circular arc (1081).

3, automatic speed changer for machine according to claim 2, it is characterized in that described operating handle swing position feeler mechanism (A3) comprises lid (134), first displacement transducer (131), the first sensor transmission shaft (122) and the first sensing pin (123), described first displacement transducer (131) is fixed on the lid (134) of fixedlying connected with casing (115), and be connected with first sensor transmission shaft (122), first sensor transmission shaft (122) is provided with the first sensing pin (123), and this first sensing pin (123) inserts in operating handle (106) the set swing detection connecting groove in end (1062) and can axially slide in swing detection connecting groove (1062); Described operating handle mobile position feeler mechanism (A4) comprises second displacement transducer (129), the second sensor transmission shaft (132), driving lever (130) and the second sensing pin (133), second displacement transducer (129) is fixedlyed connected with casing (115), and be connected with the second sensor transmission shaft (132) one ends, driving lever (130) is fixed in the other end of the second sensor transmission shaft (132), driving lever (130) is provided with the second sensing pin (133), and the second sensing pin (133) inserts in operating handle (106) the set mobile detection connecting groove in end (1063).

4, according to claim 1 or 2 or 3 described automatic speed changer for machine, it is characterized in that the described clutch push rod driving mechanism (B1) that is provided with push rod (204) also comprises clutch actuating mechanism housing (207), clutch motor (201), clutch worm screw (202), clutch worm gear (205), gear shaft (206) and tooth bar (203), described clutch actuating mechanism housing (207) is fixedlyed connected with the main casing (301) of variable speed drive (3), clutch motor (201) is fixedlyed connected with clutch actuating mechanism housing (207), the output terminal of clutch motor (201) and clutch worm screw (202) link, clutch worm screw (202) is bearing in clutch actuating mechanism housing (207) and upward and with clutch worm gear (205) is meshed, clutch worm gear (205) is loaded on the gear shaft (206), gear shaft (206) is supported on clutch actuating mechanism housing (207) and upward and with tooth bar (203) is meshed, tooth bar (203) is loaded on the push rod (204), and the push rod (204) that is connected with release bearing controlling rod (308) is bearing on the clutch actuating mechanism housing (207).

5, automatic speed changer for machine according to claim 4, it is characterized in that described push rod (204) end is connected with connecting sleeve (208), release bearing controlling rod (308) is provided with arc surface (3081) with the end that push rod (204) joins, and push rod (204) joins by the arc surface (3081) of connecting sleeve (208) with release bearing controlling rod (308).

6, automatic speed changer for machine according to claim 4, it is characterized in that described clutch position feeler mechanism (B2) comprises clutch displacement sensor (213) and sensor transmission shaft (212), clutch displacement sensor (213) is fixed on the clutch housing (302), and be connected with sensor transmission shaft (212), sensor transmission shaft (212) is connected with the end of release bearing controlling rod (308).

7, automatic speed changer for machine according to claim 4, it is characterized in that described clutch push rod driving mechanism (B1) is connected with spring assist mechanism (B3), described spring assist mechanism (B3) comprises power assistant spring (221), spring mounting seat (225) and power-assisted connecting rod (222), power assistant spring (221) one ends are fixed on the spring mounting seat (225), power assistant spring (221) the other end links to each other with an end of power-assisted connecting rod (222), the other end of power-assisted connecting rod (222) links to each other with push rod (204), spring mounting seat (225) is fixed on the main casing (301) of variable speed drive (3), and the middle part of power-assisted connecting rod (222) is bearing on the main casing (301) of variable speed drive (3).

8, automatic speed changer for machine according to claim 7, it is characterized in that being equipped with on the described spring mounting seat (225) stretching screw (223), stretching screw (223) is gone up and by being threaded spring pull bar (224) is housed, and an end of power assistant spring (221) is fixed on the spring pull bar (224).

9, automatic speed changer for machine according to claim 4, it is characterized in that being arranged with on the described operating handle (106) swing position sensor block (125) and mobile position induction coil (127), mobile position induction coil (127) is installed on the operating handle (106), swing position sensor block (125) is connected for moving to axial with operating handle (106), be equiped with on the operating handle (106) and can make the sensor block finger (138) of swing position sensor block (125) with operating handle (106) swing, described swing position sensor block (125) is provided with three straight boss (1251) of the direction that parallels to the axis, mobile position induction coil (127) is gone up and is provided with and top gear shifting block (108) perpendicular to axial direction, bottom gear shifting block (110) and the annular boss (1271) that middle bay shifting block quantity equates more than, on casing (115), be provided with swing position switch (128) and mobile position switch (126), swing position switch (128) is positioned at and the relative position of swing position sensor block (125), and mobile position switch (126) is positioned at and the relative position of mobile position induction coil (127).

10, automatic speed changer for machine according to claim 4, it is characterized in that on the main casing (301) of variable speed drive (3), be equiped with locating stud fitting seat (331) with each synchronizer corresponding position of variable speed drive (3), be equiped with in each locating stud fitting seat (331) endoporus can be in locating stud fitting seat (331) endoporus axially movable synchronizer meta locating stud (329), be arranged with retaining spring (332) on the synchronizer meta locating stud (329), synchronizer meta locating stud (329) end is provided with bulb (3291), high speed shift fork (311), be equipped with the taper hole that can match with bulb (3291) on middling speed shift fork and the low speed shift fork (317).