CN216951497U - Double-shaft multistage non-neutral gear transmission with advanced load gear and rear gear disengagement - Google Patents
Double-shaft multistage non-neutral gear transmission with advanced load gear and rear gear disengagement Download PDFInfo
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- CN216951497U CN216951497U CN202122445004.9U CN202122445004U CN216951497U CN 216951497 U CN216951497 U CN 216951497U CN 202122445004 U CN202122445004 U CN 202122445004U CN 216951497 U CN216951497 U CN 216951497U
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Abstract
The utility model relates to a double-shaft multistage non-neutral gear transmission with load, advanced gear and rear gear, which relates to a gear transmission.A lower box body and an upper box body form a box body of the transmission, a parallel input shaft and an output shaft are arranged in the box body, 2-10 normally meshed gear pairs with different speed ratios are arranged, each normally meshed gear pair consists of a fixed gear and an end face clutch gear, and the end face clutch gear is in movable fit with an end face clutch pawl sleeve; the fixed gear is fixed on one shaft, and the clutch pawl sleeve is fixed on the other shaft; the end face ratchet wheel is engaged and disengaged with the end face pawl of the sleeve; and a gear shifting slide block is arranged on the upper box body. In the transmission, a gear pair formed by a fixed gear and an end face clutch gear in the same gear is in a normal meshing state; during gear shifting, devices such as a clutch and a synchronizer do not need to be matched; the gear shifting is easy, the operation is convenient, and the structure of the transmission is small; the double shafts easily realize multi-stage speed change and have popularization value.
Description
Technical Field
The utility model relates to a gear transmission, in particular to a double-shaft multi-stage neutral-gear-free transmission with load, advanced gear and rear gear disengagement.
Background
The transmission is a transmission device for changing input speed and torque, and the types of the transmissions are various, wherein mechanical transmissions are widely applied to mechanical transmission. At present, gear shifting of a two-shaft type transmission needs gear pairing with different speed ratios, power input needs to be stopped firstly, namely a clutch is separated, then an engaged gear is disengaged, a new gear is engaged through a synchronizer, finally the clutch is engaged, power input is recovered, new speed and new torque are output, and gear shifting of the structure is generally called gear shifting before gear shifting. The two-shaft type transmission is large in structure and difficult to operate, and needs to be improved. Therefore, a double-shaft multi-stage neutral-less transmission with load, advanced gear and rear gear disengagement needs to be explored.
Disclosure of Invention
The purpose of the utility model is as follows: a dual-shaft multistage non-neutral transmission with advanced load and post-downshift gear shifting is provided.
The technical scheme of the utility model is as follows: the utility model provides a multistage neutral gear less derailleur that keeps off after advanced fender of load, lower box and last box component derailleur's box, its characterized in that: the box body is internally provided with an input shaft and an output shaft which are parallel, 2-10 normally meshed gear pairs with different speed ratios are arranged between the input shaft and the output shaft, each normally meshed gear pair consists of a fixed gear and an end face clutch gear, the end face clutch gears are movably matched on a sleeve of an end face clutch pawl sleeve, the clutch pawl sleeve is connected to the shaft through a spline, and the end face clutch gears can slide along the axial direction of the end face clutch pawl sleeve; the fixed gear is fixed on one shaft, and the clutch pawl sleeve is fixed on the other shaft; one axial end of the end face clutch gear is provided with an end face shifting fork groove, and the other axial end of the end face clutch gear is provided with an end face ratchet wheel; a sleeve end face pawl is arranged on the inner side of a boss at the end part of the end face clutch pawl sleeve; the end face ratchet wheel is engaged and disengaged with the end face pawl of the sleeve; a gear shifting fork is arranged on the end face shifting fork groove, the gear shifting fork is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork; the spring generates a force for separating the end face ratchet wheel from the end face pawl of the sleeve on the gear shifting fork; the upper box body is provided with a gear shifting sliding block, the gear shifting sliding block is composed of a gear shifting sliding block frame and a gear shifting elastic driving rod, and a contact of the gear shifting elastic driving rod pushes a head of a gear shifting fork to generate force for pushing an end face ratchet wheel to be meshed with a sleeve end face pawl by the gear shifting fork.
The double-shaft multistage non-neutral transmission with the load, advanced gear and rear gear shifting is characterized in that four normally meshed gear pairs with different speed ratios are arranged between the input shaft and the output shaft and respectively comprise a first gear pair, a second gear pair, a third gear pair and a fourth gear pair from right to left, the first gear pair and the second gear pair are fixed gears on the input shaft, the third gear pair and the fourth gear pair are end face clutch gears, and correspondingly, the first gear pair and the second gear pair are end face clutch gears on the output shaft, and the third gear pair and the fourth gear pair are fixed gears; four gear shifting elastic deflector rods are arranged and are respectively a first-gear deflector rod, a second-gear deflector rod, a third-gear deflector rod and a fourth-gear deflector rod; the upper box body is provided with four gear shifting fork holes, each gear shifting fork hole extends out of the head of one gear shifting fork, and the contact of each gear shifting elastic shifting rod corresponds to the head of one gear shifting fork; a bearing is arranged on the shaft; eight pawls of the pawls on the end face of the sleeve are uniformly distributed; twenty ratchets of the end face ratchet wheel are uniformly distributed.
The double-shaft multistage non-neutral transmission with the load, advanced gear and rear gear is characterized in that a four-step, namely a first-step, a second-step, a third-step and a fourth-step are arranged at the top of the upper box body from bottom to top, tension spring guide grooves are arranged on the left side, the right side and the rear side of the first-step, four gear shifting fork holes are formed in a bottom plate of the first-step, a gear shifting elastic deflector rod and a head of a gear shifting fork are arranged in the first-step, and the head of the gear shifting fork extends out of the gear shifting fork holes from bottom to top; the second step is provided with a gear shifting slide block frame; a tension spring is arranged in the tension spring guide groove; a front pressure plate and a rear pressure plate are arranged on the three-step; a cover plate is arranged on the fourth step; the slider of shifting comprises the slider frame of shifting and the elasticity driving lever of shifting, be equipped with the boss at the front end of the slider frame of shifting, it acts as go-between to be connected with to shift at the middle part of boss, both sides are stretched out on the left and right sides of the front end of the slider frame of shifting have the extension spring hangers, the both ends of extension spring are connected on the extension spring hangers, the intermediate point of extension spring is in the middle of the extension spring guide way of rear side with the fix with screw, box connecting hole about being equipped with on the box, be equipped with axial positioning heavy platform (11 a) in the upper left corner of last box (11), the upper left portion in the place ahead of last box (11) is equipped with the mounting groove of acting as go-between (11 b) of shifting.
The utility model relates to a double-shaft multistage non-neutral transmission with a load, an advanced gear and a rear gear, wherein a fixed gear and an end face clutch gear are in a normally meshed state, but when a gear end face ratchet is not meshed with a sleeve end face pawl, the fixed gear drives the end face clutch gear to idle on a sleeve of an end face clutch pawl sleeve, when one gear end face ratchet is meshed with the corresponding sleeve end face pawl, the clutch ratchet sleeve and the end face clutch gear synchronously rotate, and the end face clutch gear and the normally meshed fixed gear synchronously rotate.
In order to realize compact and small structure of a loaded two-shaft multi-stage neutral-gear-free transmission with advanced gear and later gear shifting, the number of teeth of gears on an input shaft is increased step by step along with the increase of the number of gears, and correspondingly, the number of teeth of gears on an output shaft is increased and decreased step by step along with the increase of the number of gears. The input shaft can be provided with a fixed gear and an end face clutch pawl sleeve, and the end face clutch pawl sleeve is provided with an end face clutch gear; the output shaft can also be provided with a fixed gear and an end face clutch pawl sleeve, and the end face clutch pawl sleeve is provided with an end face clutch gear; in a normally meshed gear pair, a fixed gear must be paired with a face clutch gear; the end face clutch pawl sleeve is fixed on the shaft, the end face clutch gear is sleeved outside the end face clutch pawl sleeve, and the end face clutch gear can slide on the end face clutch pawl sleeve.
The utility model relates to an operation method for shifting a double-shaft multistage neutral-gear-free transmission with advanced load gear and then gear disengagement, which comprises the following steps: an operator drives the gear shifting pull wire to move forwards through the finger shifter to realize gear shifting, and primary gear shifting is realized when the gear shifting slide block moves forwards by one gear distance; when an operator loosens a lower finger shifting device, the tension spring drives the gear shifting slide block to return to a gear distance, and primary gear reduction is achieved. One pitch is 5-6 mm.
The utility model relates to an advanced gear and post-shift working principle of a loaded advanced gear and post-shift dual-shaft multi-stage neutral-gear-free transmission, which comprises the following steps: the working principle of advanced gear shifting and gear releasing during gear shifting is that when an operator drives a gear shifting pull wire through a finger shifter to make a gear shifting slide block advance by one gear distance, first-stage gear shifting is realized, at the moment, when the shifting slide block advances by a gear distance, the contact of the shifting elastic deflector rod of the next gear is separated from the head of the corresponding shifting fork, but the gear is not completely shifted, after the contact of the gear-shifting elastic deflector rod of the upper gear is contacted with the head of the corresponding gear-shifting fork, the gear shifting fork drives the end face ratchet wheel of the upper stage to be meshed with the end face pawl of the sleeve of the upper stage to complete the advanced gear of the upper stage, when the rotating speed of the output shaft is accelerated, the rotating speed of the end face clutch pawl sleeve on the output shaft is accelerated, the speed difference is formed between the end face clutch pawl sleeve and the end face clutch gear, the sleeve end face pawl of the next stage is promoted to be separated from the end face ratchet wheel immediately, the complete gear disengagement of the next stage is realized, and the rear gear disengagement is realized.
The working principle of the advanced gear-shifting and gear-shifting during gear-shifting is that when an operator loosens a lower finger shifting device, a tension spring drives a gear-shifting slide block to return to a gear pitch, so that one-stage gear-shifting is realized, at the moment, when the gear-shifting slide block retreats to the gear pitch, a contact of a gear-shifting elastic shifting rod which is contacted with the previous stage is separated from a gear-shifting fork head of the previous stage, but the gear-shifting elastic shifting rod is not completely shifted, the contact of the gear-shifting elastic shifting rod of the next stage is contacted with the gear-shifting fork head of the next stage, a sleeve end-face pawl of the next stage is driven to be meshed with an end-face ratchet wheel of the next stage, so that the advanced gear-shifting of the next stage is completed, the operator needs to perform the speed-reducing operation of an input shaft once, for example, the speed-reducing operation of a bicycle, the speed-reducing operation of an electric vehicle, the power supply once temporarily stops, the speed-reducing operation of an internal combustion engine, the speed-reducing operation of loosening an accelerator pawl, and the end-face clutch sleeve and an end-face clutch gear of the previous stage form a speed difference, the immediate separation of the pawl on the end face of the sleeve on the upper stage and the ratchet on the end face is promoted, and the complete gear-disengaging of the next upper stage is realized, namely the gear-disengaging after the gear-disengaging is realized. When the input shaft recovers the rotating speed, the next gear pair which enters the gear works.
The utility model relates to a double-shaft multistage non-neutral gear transmission with load, advanced gear and rear gear, wherein an input shaft drives an end face clutch pawl sleeve connected with a spline to rotate; on the output shaft, when the end surface pawl of the sleeve is meshed with the end surface ratchet wheel, the end surface clutch gear drives the end surface clutch pawl sleeve to rotate, and the end surface clutch pawl sleeve drives the output shaft to rotate. The sleeve end surface pawls of the end surface clutch pawl sleeve on the input shaft are in one direction, and the sleeve end surface pawls of the end surface clutch pawl sleeve on the output shaft are in the other direction.
The double-shaft multi-stage neutral-gear-free transmission with the load, advanced gear and rear gear disengagement is in the advanced gear and rear gear disengagement during gear shifting, so that the transmission is free of neutral gear.
The utility model has the beneficial effects that: the utility model relates to a double-shaft multistage non-neutral transmission with load, advanced gear and rear gear, wherein a gear pair formed by a fixed gear and an end face clutch gear of the same gear is in a normally engaged state; during gear shifting, the end face clutch gear only slightly slides on the end face clutch pawl sleeve, and then the gear is shifted after advanced gear shifting is completed; during gear shifting, devices such as a clutch and a synchronizer do not need to be matched; during gear shifting, the fixed gear and the end face clutch gear do not collide, the gear shifting is easy, the operation is convenient, and the structure of the transmission is small and exquisite; the double shafts easily realize multi-stage speed change, and the device has popularization value.
Drawings
FIG. 1 is a schematic view of the structure inside the lower case of the present invention;
FIG. 2 is a schematic structural view of an end face clutch ratchet sleeve;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic structural view of the face clutch gear;
FIG. 5 is a left side view of FIG. 4;
FIG. 6 is a schematic top view of the upper housing;
FIG. 7 is a sectional view A-A of FIG. 6;
FIG. 8 is a cross-sectional view B-B of FIG. 6;
FIG. 9 is a schematic view of the cover plate of FIG. 6 with the cover plate removed;
FIG. 10 is a schematic view of the front and rear platens shown in FIG. 9 with the platens removed;
FIG. 11 is a schematic view of the shift block in bottom view;
FIG. 12 is a schematic view of a shift fork;
the labels in the figure are: the gear shifting device comprises an input shaft (1), an output shaft (2), an end face clutch pawl sleeve (3), a sleeve end face pawl (3 a), a first gear pair (4), an end face clutch gear (4 a), an end face ratchet wheel (4 a 1), an end face clutch gear fork groove (4 a 2), a fixed gear (4 b), a gear shifting fork (5), a second gear pair (6), a third gear pair (7), a fourth gear pair (8), a lower box (9), a bearing (10), an upper box (11), an axial positioning sinking platform (11 a), a gear shifting wire mounting groove (11 b), a gear shifting wire (12), a front pressing plate (13), a cover plate (14), a gear shifting slider frame (15), a gear shifting elastic shifting rod (16), a first gear shifting rod (16 a), a second gear shifting rod (16 b), a third gear shifting rod (16 c), a fourth gear shifting rod (16 d), a screw (17), a gear shifting fork hole (18), A back pressure plate (19), a tension spring (20) and upper and lower box body connecting holes (21).
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, a double-shaft multistage neutral-less transmission with load, first gear and second gear, and then gear disengagement, wherein a lower case 9 and an upper case 11 constitute a transmission case, an input shaft 1 and an output shaft 2 are provided in the transmission case in parallel, a normally meshed gear pair with different speed ratios of 2 to 10 is provided between the input shaft 1 and the output shaft 2, the normally meshed gear pair is composed of a fixed gear 4b and a face clutch gear 4a, the face clutch gear 4a is movably fitted on a sleeve of the face clutch pawl sleeve 3, the clutch pawl sleeve 3 is connected to the shaft by a spline, and the face clutch gear 4a can slide along the axial direction of the face clutch pawl sleeve 3; the fixed gear 4b is fixed on one shaft, and the clutch pawl sleeve 3 is fixed on the other shaft; an end face shifting fork groove 4a2 is arranged at one axial end of the end face clutch gear 4a, and an end face ratchet wheel 4a1 is arranged at the other axial end of the end face clutch gear 4 a; a sleeve end face pawl 3a is arranged on the inner side of a boss at the end part of the end face clutch pawl sleeve 3; the end face ratchet wheel 4a1 is clutched with the sleeve end face pawl 3 a; a gear shifting fork 5 is arranged on the end face shifting fork groove 4a2, the gear shifting fork 5 is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork 5; the spring generates a force for separating the end face ratchet wheel 4a1 from the sleeve end face pawl 3a to the shift fork 5; the upper box body 11 is provided with a gear shifting slider which is composed of a gear shifting slider frame 15 and a gear shifting elastic shifting rod 16, and a contact of the gear shifting elastic shifting rod 16 pushes a head of a gear shifting fork 5 to generate force for pushing the end face ratchet wheel 4a1 to be meshed with the sleeve end face pawl 3a by the gear shifting fork 5.
Example 2
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, a double-shaft multistage neutral-less transmission with load, first gear and second gear, and then gear disengagement, wherein a lower case 9 and an upper case 11 constitute a transmission case, an input shaft 1 and an output shaft 2 are provided in the transmission case in parallel, a normally meshed gear pair with different speed ratios of 2 to 10 is provided between the input shaft 1 and the output shaft 2, the normally meshed gear pair is composed of a fixed gear 4b and a face clutch gear 4a, the face clutch gear 4a is movably fitted on a sleeve of the face clutch pawl sleeve 3, the clutch pawl sleeve 3 is connected to the shaft by a spline, and the face clutch gear 4a can slide along the axial direction of the face clutch pawl sleeve 3; the fixed gear 4b is fixed on one shaft, and the clutch pawl sleeve 3 is fixed on the other shaft; an end face shifting fork groove 4a2 is arranged at one axial end of the end face clutch gear 4a, and an end face ratchet wheel 4a1 is arranged at the other axial end of the end face clutch gear 4 a; a sleeve end face pawl 3a is arranged on the inner side of a boss at the end part of the end face clutch pawl sleeve 3; the end face ratchet wheel 4a1 is clutched with the sleeve end face pawl 3 a; a gear shifting fork 5 is arranged on the end face shifting fork groove 4a2, the gear shifting fork 5 is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork 5; the spring generates a force for separating the end face ratchet wheel 4a1 from the sleeve end face pawl 3a to the shift fork 5; the upper box body 11 is provided with a gear shifting slider which is composed of a gear shifting slider frame 15 and a gear shifting elastic shifting rod 16, and a contact of the gear shifting elastic shifting rod 16 pushes a head of a gear shifting fork 5 to generate force for pushing the end face ratchet wheel 4a1 to be meshed with the sleeve end face pawl 3a by the gear shifting fork 5. Four normally meshed gear pairs with different speed ratios are arranged between the input shaft 1 and the output shaft 2, from right to left, a first gear pair 4, a second gear pair 6, a third gear pair 7 and a fourth gear pair 8 are respectively arranged on the input shaft 1, the first gear pair and the second gear pair are fixed gears, the third gear pair and the fourth gear pair are end face clutch gears, correspondingly, the first gear pair and the second gear pair are end face clutch gears, and the third gear pair and the fourth gear pair are fixed gears on the output shaft 2; four gear-shifting elastic shift levers 16 are arranged, namely a first-gear shift lever 16a, a second-gear shift lever 16b, a third-gear shift lever 16c and a fourth-gear shift lever 16 d; four gear shifting fork holes 18 are formed in the upper box body 11, each gear shifting fork hole 18 extends out of the head of one gear shifting fork 5, and a contact of each gear shifting elastic shifting rod corresponds to the head of one gear shifting fork 5; a bearing 10 is arranged on the shaft; eight pawls of the pawl 3a on the end surface of the sleeve are uniformly distributed; twenty ratchet teeth of the end surface ratchet wheel 4a1 are uniformly distributed.
Example 3
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, a double-shaft multistage neutral-gear-less transmission with load, first gear shift and second gear shift, wherein a lower case 9 and an upper case 11 form a transmission case, an input shaft 1 and an output shaft 2 are arranged in the transmission case in parallel, 2-10 normally meshed gear pairs with different speed ratios are arranged between the input shaft 1 and the output shaft 2, each normally meshed gear pair is composed of a fixed gear 4b and an end face clutch gear 4a, the end face clutch gear 4a is movably matched on a sleeve of the end face clutch pawl sleeve 3, the clutch pawl sleeve 3 is connected on the shaft through a spline, and the end face clutch gear 4a can slide along the axial direction of the end face clutch pawl sleeve 3; the fixed gear 4b is fixed on one shaft, and the clutch pawl sleeve 3 is fixed on the other shaft; an end face shifting fork groove 4a2 is arranged at one axial end of the end face clutch gear 4a, and an end face ratchet wheel 4a1 is arranged at the other axial end of the end face clutch gear 4 a; a sleeve end surface pawl 3a is arranged on the inner side of a boss at the end part of the end surface clutch pawl sleeve 3; the end face ratchet wheel 4a1 is clutched with the sleeve end face pawl 3 a; a gear shifting fork 5 is arranged on the end face shifting fork groove 4a2, the gear shifting fork 5 is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork 5; the spring generates a force for separating the end face ratchet wheel 4a1 from the sleeve end face pawl 3a to the shift fork 5; the upper box body 11 is provided with a gear shifting slider which is composed of a gear shifting slider frame 15 and a gear shifting elastic shifting rod 16, and a contact of the gear shifting elastic shifting rod 16 pushes a head of a gear shifting fork 5 to generate force for pushing the end face ratchet wheel 4a1 to be meshed with the sleeve end face pawl 3a by the gear shifting fork 5. Four steps are arranged at the top of the upper box body 11 from bottom to top, namely a first step, a second step, a third step and a fourth step in sequence, tension spring guide grooves are arranged at the left side, the right side and the rear side of the first step, four shifting fork holes 18 are arranged on a bottom plate of the first step, a shifting elastic shifting rod 16 and a head of a shifting fork 5 are arranged in the first step, and the head of the shifting fork 5 extends out of the shifting fork holes 18 from bottom to top; the second step is provided with a gear shifting slide block frame 15; a tension spring 20 is arranged in the tension spring guide groove; a front pressing plate 13 and a rear pressing plate 19 are arranged on the three steps; a cover plate 14 is arranged on the fourth step; the slider of shifting comprises slider frame 15 and the elastic driving lever 16 of shifting, be equipped with the boss at the front end of slider frame 15 of shifting, be connected with at the middle part of boss and shift 12 of acting as go-between, both sides are stretched out on both sides about the front end of slider frame 15 of shifting, the both ends of extension spring 20 are connected on the extension spring hangers, the intermediate point of extension spring 20 is fixed in the middle of the extension spring guide way at the rear side with screw 17, box connecting hole 21 about being equipped with on the box, be equipped with the heavy platform of axial positioning (11 a) in the upper left corner of last box (11), the upper left portion in the place ahead of last box (11) is equipped with the mounting groove of acting as go-between of shifting (11 b).
Example 4
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, a double-shaft multistage neutral-less transmission with load, first gear and second gear, and then gear disengagement, wherein a lower case 9 and an upper case 11 constitute a transmission case, an input shaft 1 and an output shaft 2 are provided in the transmission case in parallel, a normally meshed gear pair with different speed ratios of 2 to 10 is provided between the input shaft 1 and the output shaft 2, the normally meshed gear pair is composed of a fixed gear 4b and a face clutch gear 4a, the face clutch gear 4a is movably fitted on a sleeve of the face clutch pawl sleeve 3, the clutch pawl sleeve 3 is connected to the shaft by a spline, and the face clutch gear 4a can slide along the axial direction of the face clutch pawl sleeve 3; the fixed gear 4b is fixed on one shaft, and the clutch pawl sleeve 3 is fixed on the other shaft; an end face shifting fork groove 4a2 is arranged at one axial end of the end face clutch gear 4a, and an end face ratchet wheel 4a1 is arranged at the other axial end of the end face clutch gear 4 a; a sleeve end surface pawl 3a is arranged on the inner side of a boss at the end part of the end surface clutch pawl sleeve 3; the end face ratchet wheel 4a1 is clutched with the sleeve end face pawl 3 a; a gear shifting fork 5 is arranged on the end face shifting fork groove 4a2, the gear shifting fork 5 is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork 5; the spring generates a force for separating the end face ratchet wheel 4a1 from the sleeve end face pawl 3a to the shift fork 5; the upper box body 11 is provided with a gear shifting slider, the gear shifting slider is composed of a gear shifting slider frame 15 and a gear shifting elastic shifting rod 16, and a contact of the gear shifting elastic shifting rod 16 pushes a head of a gear shifting fork 5 to generate force for pushing an end face ratchet wheel 4a1 to be meshed with a sleeve end face pawl 3a by the gear shifting fork 5. Four normally meshed gear pairs with different speed ratios are arranged between the input shaft 1 and the output shaft 2, from right to left, a first gear pair 4, a second gear pair 6, a third gear pair 7 and a fourth gear pair 8 are respectively arranged on the input shaft 1, the first gear pair and the second gear pair are fixed gears, the third gear pair and the fourth gear pair are end face clutch gears, correspondingly, the first gear pair and the second gear pair are end face clutch gears, and the third gear pair and the fourth gear pair are fixed gears on the output shaft 2; four gear-shifting elastic shift levers 16 are arranged, namely a first-gear shift lever 16a, a second-gear shift lever 16b, a third-gear shift lever 16c and a fourth-gear shift lever 16 d; four shifting fork holes 18 are formed in the upper box body 11, a head of one shifting fork 5 extends out of each shifting fork hole 18, and a contact of each shifting elastic shifting rod corresponds to a head of one shifting fork 5; a bearing 10 is arranged on the shaft; eight pawls of the pawl 3a on the end surface of the sleeve are uniformly distributed; twenty ratchet teeth of the end surface ratchet wheel 4a1 are uniformly distributed. Four steps are arranged at the top of the upper box body 11 from bottom to top, namely a first step, a second step, a third step and a fourth step in sequence, tension spring guide grooves are arranged at the left side, the right side and the rear side of the first step, four shifting fork holes 18 are arranged on a bottom plate of the first step, a shifting elastic shifting rod 16 and a head of a shifting fork 5 are arranged in the first step, and the head of the shifting fork 5 extends out of the shifting fork holes 18 from bottom to top; the second step is provided with a gear shifting slide block frame 15; a tension spring 20 is arranged in the tension spring guide groove; a front pressing plate 13 and a rear pressing plate 19 are arranged on the three steps; a cover plate 14 is arranged on the fourth step; the slider of shifting comprises slider frame 15 and the elasticity driving lever 16 of shifting, be equipped with the boss at the front end of slider frame 15 of shifting, be connected with at the middle part of boss and shift 12 of acting as go-between, both sides are stretched out to the front end of slider frame 15 of shifting have the extension spring hangers about, the both ends of extension spring 20 are connected on the extension spring hangers, the intermediate point of extension spring 20 is fixed in the middle of the extension spring guide way at the rear side with screw 17, box connecting hole 21 about being equipped with on the box, be equipped with axial positioning heavy platform (11 a) in the upper left corner of last box (11), be equipped with the left upper portion in the place ahead of last box (11) and shift mounting groove (11 b) of acting as go-between.
Claims (3)
1. The utility model provides a multistage neutral gear less derailleur that keeps off after advanced fender of area load, lower box (9) and last box (11) constitute the box of derailleur, its characterized in that: an input shaft (1) and an output shaft (2) which are parallel are arranged in a box body, a normally meshed gear pair with different speed ratios of 2-10 pairs is arranged between the input shaft (1) and the output shaft (2), the normally meshed gear pair consists of a fixed gear (4 b) and an end face clutch gear (4 a), the end face clutch gear (4 a) is movably matched on a sleeve of an end face clutch pawl sleeve (3), the clutch pawl sleeve (3) is connected on the shaft through a spline, and the end face clutch gear (4 a) can slide along the axial direction of the end face clutch pawl sleeve (3); the fixed gear (4 b) is fixed on one shaft, and the clutch pawl sleeve (3) is fixed on the other shaft; an end face shifting fork groove (4 a 2) is arranged at one axial end of the end face clutch gear (4 a), and an end face ratchet wheel (4 a 1) is arranged at the other axial end of the end face clutch gear (4 a); a sleeve end face pawl (3 a) is arranged on the inner side of a boss at the end part of the end face clutch pawl sleeve (3); the end face ratchet wheel (4 a 1) is clutched with the sleeve end face pawl (3 a); a gear shifting fork (5) is arranged on the end face shifting fork groove (4 a 2), the gear shifting fork (5) is arranged on a gear shifting fork bracket, a spring is arranged on the gear shifting fork bracket, one end of the spring is fixed on the gear shifting fork bracket, and the other end of the spring is connected to the upper end of the gear shifting fork (5); the spring generates a force for separating the end face ratchet wheel (4 a 1) and the sleeve end face pawl (3 a) to the gear shifting fork (5); the upper box body (11) is provided with a gear shifting slider, the gear shifting slider consists of a gear shifting slider frame (15) and a gear shifting elastic shifting rod (16), a contact of the gear shifting elastic shifting rod (16) pushes a head of a gear shifting fork (5) to generate force for pushing an end face ratchet wheel (4 a 1) to be meshed with a sleeve end face pawl (3 a) by the gear shifting fork (5).
2. The loaded, advanced, and rear-shifted, dual-shaft, multistage neutral transmission of claim 1, wherein: four normally meshed gear pairs with different speed ratios are arranged between the input shaft (1) and the output shaft (2), from right to left, a first-gear pair (4), a second-gear pair (6), a third-gear pair (7) and a fourth-gear pair (8) are respectively arranged on the input shaft (1), the first-gear pair and the second-gear pair are fixed gears, the third-gear pair and the fourth-gear pair are end face clutch gears, correspondingly, the first-gear pair and the second-gear pair are end face clutch gears, and the third-gear pair and the fourth-gear pair are fixed gears on the output shaft (2); the four gear-shifting elastic deflector rods (16) are respectively a first-gear deflector rod (16 a), a second-gear deflector rod (16 b), a third-gear deflector rod (16 c) and a fourth-gear deflector rod (16 d); four shifting fork holes (18) are formed in the upper box body (11), a head of one shifting fork (5) extends out of each shifting fork hole (18), and a contact of each shifting elastic shifting rod corresponds to a head of one shifting fork (5); a bearing (10) is arranged on the shaft; eight pawls of the pawl (3 a) on the end surface of the sleeve are uniformly distributed; twenty ratchet teeth of the end face ratchet wheel (4 a 1) are uniformly distributed.
3. The dual-shaft multistage neutral transmission with load, advanced range, and post-downshift according to claim 1 or 2, wherein: four steps are arranged on the top of the upper box body (11) from bottom to top and are sequentially a first step, a second step, a third step and a fourth step, tension spring guide grooves are formed in the left side, the right side and the rear side of the first step, four shifting fork holes (18) are formed in the bottom plate of the first step, a shifting elastic shifting rod (16) and the head of a shifting fork (5) are arranged in the first step, and the head of the shifting fork (5) extends out of the shifting fork holes (18) from bottom to top; the second step is provided with a gear shifting slide block frame (15); a tension spring (20) is arranged in the tension spring guide groove; a front pressure plate (13) and a rear pressure plate (19) are arranged on the three steps; a cover plate (14) is arranged on the fourth step; the slider of shifting comprises slider frame of shifting (15) and the elasticity driving lever of shifting (16), front end at slider frame of shifting (15) is equipped with the boss, middle part at the boss is connected with the line of pulling of shifting (12), both sides are stretched out on the left and right sides of the front end of slider frame of shifting (15) have the extension spring hangers, the both ends of extension spring (20) are connected on the extension spring hangers, the intermediate point of extension spring (20) is fixed in the middle of the extension spring guide way of rear side with screw (17), box connecting hole (21) about being equipped with on the box, be equipped with axial positioning heavy platform (11 a) in the upper left corner in last box (11), the upper left portion in the place ahead of last box (11) is equipped with the mounting groove of pulling of shifting (11 b).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122445004.9U CN216951497U (en) | 2021-10-12 | 2021-10-12 | Double-shaft multistage non-neutral gear transmission with advanced load gear and rear gear disengagement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122445004.9U CN216951497U (en) | 2021-10-12 | 2021-10-12 | Double-shaft multistage non-neutral gear transmission with advanced load gear and rear gear disengagement |
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| CN216951497U true CN216951497U (en) | 2022-07-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803422A (en) * | 2021-10-12 | 2021-12-17 | 石幸运 | Double-shaft multi-stage neutral-gear-free transmission with load, advanced gear and rear gear disengagement |
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2021
- 2021-10-12 CN CN202122445004.9U patent/CN216951497U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803422A (en) * | 2021-10-12 | 2021-12-17 | 石幸运 | Double-shaft multi-stage neutral-gear-free transmission with load, advanced gear and rear gear disengagement |
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