CN217481945U - Auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car - Google Patents
Auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car Download PDFInfo
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- CN217481945U CN217481945U CN202221189535.4U CN202221189535U CN217481945U CN 217481945 U CN217481945 U CN 217481945U CN 202221189535 U CN202221189535 U CN 202221189535U CN 217481945 U CN217481945 U CN 217481945U
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Abstract
The utility model discloses an auxiliary tank actuating mechanism that shifts behind electrodynamic type commercial car, it rotates to drive the lead screw through direct current brushless motor, drive the lateral shifting of shifting fork axle with screw-nut, drive the shift fork of shifting with lever structure, thereby it moves to high fender awl hub or low fender awl hub to drive the height and keep off the sliding sleeve, at this in-process, the effect through spring elasticity between high fender synchronizing ring and the low fender synchronizing ring, make the certain angle of two synchronizing ring week bullet open, the teeth of a cogwheel is half tooth in wrong phase all the time, when making the teeth of a cogwheel of one side synchronizing ring and height fender sliding sleeve mesh, the conical surface of the opposite side synchronizing ring teeth of a cogwheel is relative with the conical surface of the high low sliding sleeve teeth of a cogwheel. The utility model has the characteristics of increase power of shifting, simple high efficiency, the accurate rapid of shifting.
Description
Technical Field
The utility model relates to a vehicle technical field that shifts, more specifically, the utility model relates to an auxiliary tank actuating mechanism that shifts behind electrodynamic type commercial car.
Background
Heavy commercial vehicle usually uses 12 grades or 16 grades of gearboxes, and the form that main box and auxiliary box combine is usually adopted to the gearbox of shifting more in order to reduce axial dimension, in the auxiliary box, generally contains mechanical parts such as sun gear, planet wheel, planet carrier and ring gear, and some adoption wet brake of traditional auxiliary box shift actuating element, some synchronizers that adopt traditional structure, both's volume is very big for auxiliary box volume increase in back.
In a traditional rear auxiliary box planetary gear mechanism, when a gear shifting executing part is a wet brake, the gear shifting executing part is composed of a plurality of steel sheet assemblies fixed relative to the circumferential direction of a gearbox and a plurality of friction sheet assemblies fixed relative to the circumferential direction of a rotating part, the occupied size is large, the size of the gearbox is increased, oil needs to be supplemented in the wet brake, an independent oil duct needs to be arranged, and the manufacturing cost is increased.
When the synchronizer with the traditional structure is used as a gear shifting executing component, certain gear shifting loss can be generated due to the complex structure of the traditional synchronizer, and the axial size of the traditional synchronizer is large, so that the axial size of the rear auxiliary box is increased.
At present, the driving forms of a gear selecting and shifting actuating mechanism are mainly divided into pneumatic, hydraulic, electric and the like, although the pneumatic type has higher gear shifting force, due to the compressibility of gas, the gear shifting process is difficult to manage, the management process is rough, and higher air tightness is needed; the hydraulic adjustment precision is good, but an oil way and an oil pumping device are needed to be arranged, and if leakage happens, pollution is easy to happen; in addition, external channels are required to be arranged in a pneumatic type and a hydraulic type, so that the cost is high, the gear shifting impact is large, and the gear shifting is not accurate enough; the electrodynamic type has higher transmission efficiency, adjusts also more accurately, adopts vehicle mounted power source can work.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a develop an auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car, shift through the motor drive of shifting and shift the declutch shift shaft and combine lever structure, realize the accurate regulation of the stroke of shifting in the time of the power of increasing shifting to the combination of spring, high fender synchronizer ring and low fender synchronizer ring shifts rapidly accurately when simplifying the structure, reduces the impact of shifting.
The utility model provides a technical scheme does:
the utility model provides an auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car, includes:
a housing; and
a shift motor fixed within the housing;
the screw rod is connected with the output end of the gear shifting motor;
the gear shifting fork shaft is detachably connected with the nut of the lead screw;
the gear shifting fork comprises a fork head end and a fork mouth end, the fork head end is clamped on the gear shifting fork shaft, and the middle part of the fork mouth end is rotatably fixed in the shell;
the outer side of the high-low gear sliding sleeve is meshed with a gear ring of the planetary mechanism, and the high-low gear sliding sleeve is rotatably clamped with the fork opening end;
the high-gear synchronizing ring is arranged on the inner side of the high-gear sliding sleeve and selectively meshed with the high-gear sliding sleeve, and a plurality of first fixing bulges are sequentially arranged at intervals at one end of the high-gear synchronizing ring;
the low-gear synchronizing ring is arranged on the inner side of the high-low gear sliding sleeve and is selectively meshed with the high-low gear sliding sleeve, and a plurality of second fixing bulges are sequentially arranged at intervals at one end of the low-gear synchronizing ring;
the springs are respectively arranged between the first fixing bulges and the second fixing bulges in a one-to-one correspondence manner, so that the gear teeth of the high-gear synchronizing ring and the low-gear synchronizing ring are staggered;
the high-gear cone hub is arranged at the other end of the high-gear synchronizing ring and is connected with a planet carrier of the planetary mechanism;
a low-gear cone hub arranged at the other end of the low-gear synchronizing ring and fixed in the shell;
wherein, the high-low gear sliding sleeve is selectively connected with the high-low gear cone hub or the low-low gear cone hub.
Preferably, the gear shifting motor is a brushless dc motor.
Preferably, one end of the nut of the lead screw has an annular stepped flange.
Preferably, one end of the shift fork shaft is provided with an arc-shaped groove;
wherein, the arc-shaped groove is mutually clamped with the annular step-shaped flange.
Preferably, the method further comprises the following steps:
the annular groove is arranged on the outer side of the high-low gear sliding sleeve;
and the jaw end is rotationally clamped with the annular groove clamp.
Preferably, both ends of the inner gear teeth of the high-low gear sliding sleeve are of conical surface structures.
Preferably, the outer gear teeth of the high-gear synchronizing ring and the outer gear teeth of the low-gear synchronizing ring are both in a bevel structure;
and the high-low gear sliding sleeve and the high-low gear synchronous ring or the low-low gear synchronous ring can be selectively locked.
Preferably, the outer gear teeth of the high-gear cone hub and the low-gear cone hub are both in a conical surface structure.
Preferably, the inner sides of the high-gear synchronizing ring and the low-gear synchronizing ring are both friction conical surfaces, and the inner sides of the high-gear synchronizing ring and the low-gear synchronizing ring are both provided with spiral grooves.
Beneficial effect:
(1) the utility model provides an auxiliary tank actuating mechanism that shifts behind electrodynamic type commercial car adopts direct current brushless motor, detects the rotor position and calculates out the shift fork shaft displacement of shifting, realizes the accurate regulation of the stroke of shifting.
(2) The utility model provides an auxiliary tank actuating mechanism that shifts behind electrodynamic type commercial car drives the shift fork axle through motor drive screw nut structure, and transmission simple structure is high-efficient, and sets up lever mechanism at the shift fork position of shifting, and the increase power of shifting also can guarantee the required power of gear shift when reducing motor drive pressure, reduces motor power.
(3) The utility model provides an auxiliary tank actuating mechanism that shifts behind electrodynamic type commercial car adopts the high-low fender synchronous ware of novel structure, has the fixed arch of 6 installation springs, makes synchronous ware overall structure simplify, is favorable to the lightweight of gearbox, and this synchronous ware gear shift is rapid, the accuracy can also reduce the impact extension derailleur life that the gear shift brought, and compact structure reaches reduce cost's purpose.
Drawings
Fig. 1 is the structure schematic diagram of the gearshift of the electric commercial vehicle rear auxiliary box gearshift actuating mechanism.
Fig. 2 is the assembly structure schematic diagram of the shift fork of the utility model.
Fig. 3 is the structure schematic diagram of the synchronizer of the electric commercial vehicle rear auxiliary box gear shifting actuating mechanism.
Fig. 4 is an explosion structure diagram of the synchronizer according to the present invention.
Fig. 5 is a schematic cross-sectional structure diagram of the synchronizer according to the present invention.
Fig. 6 is a schematic structural view of the high-low gear sliding sleeve of the present invention.
Fig. 7 is the assembly structure diagram of the high-gear synchronizing ring and the low-gear synchronizing ring of the present invention.
Fig. 8 is a schematic diagram of a longitudinal section structure of the synchronizer according to the present invention.
Fig. 9 is a structural schematic diagram of the gear shift change of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in figure 1, the utility model provides an auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car, including casing, gearshift and synchronous ware.
As shown in fig. 1 and 2, the illustrated shift mechanism includes: the gear shifting mechanism comprises a gear shifting motor 101, a lead screw 102, a nut 103, a gear shifting fork shaft 111 and a gear shifting fork 112, wherein the gear shifting motor 101 is fixed in the shell 100; the screw rod 102 is connected with the output end of the gear shifting motor 101 and can rotate circumferentially; one end of the nut 103 is provided with an annular stepped flange, the nut 103 is sleeved outside the screw rod 102, the nut 103 and the screw rod 102 are connected to form a screw rod nut structure, and the rotation of the screw rod 102 can drive the nut 103 to axially move; an arc-shaped groove is formed in the gear shifting fork shaft 111 and is matched with an annular stepped flange of the nut 103, so that the gear shifting fork shaft 111 is detachably connected with the nut 103 of the lead screw; the shift fork 112 comprises a fork head end and a fork mouth end, the fork head end is clamped on the shift fork shaft 111, the fork mouth end is clamped on the synchronizer, the synchronizer is rotatable, and the intersection of the fork head end and the fork mouth end is a lever fulcrum, so that the shift fork shaft 111 and the high-low gear sliding sleeve move reversely.
The gear shifting motor 101 is a dc brushless motor.
As shown in fig. 2, the shift fork shaft 111 is provided with a slot, the fork head end of the shift fork 112 is disposed in the slot, the fork head end can move along with the shift fork shaft 111, the middle part of the fork head end is provided with 2 symmetrical positioning pins 113, one end of each of the 2 positioning pins 113 is embedded and fixed on the housing 100, the other end of each of the 2 positioning pins 113 respectively penetrates through the middle part of the fork head end, and the shift fork 112 can rotate around the positioning pin 113, i.e., a lever fulcrum.
Fork mouthful end is provided with shift fork slider 114, and the one end of shift fork slider 114 is the axle, during embedding shift fork 112, shift fork slider 114 can carry out the free rotation for shift fork 112, and the other end is used for stirring the synchronous ware and removes.
When the shifting fork shaft 111 moves, the fork head end is driven to move, the boosting movement of the fork head end is realized due to the fixing effect of the fulcrum of the positioning pin 113, the actual movement track of the fork head end is arc-shaped due to the lever effect, the actual movement track directly acts on the synchronizer and is easy to damage, and the shifting fork sliding block 114 is arranged, so that the stress of the synchronizer is ensured to be along the linear direction, and the abrasion of the synchronizer is reduced.
As shown in fig. 3, 4, and 5, the synchronizer includes: a high-low gear sliding sleeve 120, a high-low gear synchronizing ring 130, a low-low gear synchronizing ring 140, a high-low gear cone hub 150, a low-low gear cone hub 160, and a plurality of springs 170.
As shown in fig. 6, the outer edge of the high-low gear sliding sleeve 120 is provided with gear teeth and keeps engaged with the gear teeth of the gear ring of the planetary mechanism, the inner edge of the high-low gear sliding sleeve 120 is provided with gear teeth, both ends of the inner edge of the high-low gear sliding sleeve 120 are provided with conical surface structures, the outer side of the high-low gear sliding sleeve 120 is provided with an annular groove, the end of the fork is engaged in the annular groove, and the high-low gear sliding sleeve 120 is rotatable.
As shown in fig. 7, the outer edge of the high-gear synchronizing ring 130 is provided with gear teeth, the outer edge gear teeth of the high-gear synchronizing ring 130 are of an inclined surface structure, and the inclined surface structure can be matched and meshed with the inner edge gear teeth conical surface structure of the high-low gear sliding sleeve 120; the inner edge of the high-gear synchronizing ring 130 is provided with a friction conical surface and a spiral groove; one end of the high-gear synchronizing ring 130 is sequentially provided with a plurality of first fixing protrusions 131 at intervals, the first fixing protrusions 131 are large protrusions and small protrusions which are arranged at intervals, and circular grooves are formed in the circumferential direction of the large protrusions and the circumferential direction of the small protrusions.
The structure of low gear synchronizer ring 140 is the same as the structure of high gear synchronizer ring 130 completely, and low gear synchronizer ring for high gear synchronizer ring 130 sets up the inboard of high and low gear sliding sleeve 120, the one end of low gear synchronizer ring 140 has set up a plurality of second fixed archs 141 at the interval in proper order, just a plurality of second fixed archs 131 are big arch and the little arch that the interval set up, big arch and little bellied circumference are provided with circular recess.
As shown in fig. 8, the large protrusions of the first fixing protrusions 131 and the small protrusions of the second fixing protrusions 141 are arranged in pairs, the small protrusions of the first fixing protrusions 131 and the large protrusions of the second fixing protrusions 141 are arranged in pairs, a spring 170 is arranged in a circular groove where the large protrusions and the small protrusions arranged in pairs are opposite to each other, the spring 170 is compressed by the large protrusions and the small protrusions, due to the elastic force of the spring 170, the high-gear synchronizing ring 130 and the low-gear synchronizing ring are circumferentially sprung apart by a certain angle, the gear teeth are staggered by half a tooth all the time, only one of the two synchronizing rings is always matched with the high-low gear sliding sleeve 120, and when the synchronizing ring on one side is meshed with the gear teeth of the high-low gear sliding sleeve 120, the conical surface of the gear teeth of the synchronizing ring on the other side is opposite to the conical surface of the gear teeth of the high-low gear sliding sleeve 120, and is not matched with the inner edge of the gear teeth of the high-low gear sliding sleeve 120.
The high-gear cone hub 150 is disposed at the other end of the high-gear synchronizing ring 130, and gear teeth are distributed on the outer edge of the high-gear cone hub 150, so that the high-low gear sliding sleeve 120 is selectively engaged with the high-gear cone hub 150, and the high-gear cone hub 150 is connected with the planet carrier of the planetary mechanism.
A low-end cone hub 160 is disposed at the other end of the low-end synchronizing ring 140, and gear teeth are distributed on the outer edge of the low-end cone hub 160, so that the high-low end sliding sleeve 120 can be selectively engaged with the low-end cone hub 160, and the low-end cone hub 160 is fixed in the housing.
The outer gear teeth of the high-gear cone hub 150 and the low-gear cone hub 160 are both of a cone structure.
Electrodynamic type commercial car back auxiliary tank actuating mechanism that shifts's working process does:
when the gear shifting motor 101 receives a gear shifting command, the gear shifting motor 101 starts to rotate in the forward direction or the reverse direction, the screw rod 102 rotates to drive the nut 103 to move axially, so that the gear shifting fork shaft 111 moves axially, and the gear shifting fork 112 and the lever mechanism drive the high-low gear sliding sleeve 120 to move axially in the direction opposite to the direction of the gear shifting fork shaft 111.
Take the high gear shift and the low gear shift as examples:
before shifting gears, the high-low gear sliding sleeve 120 is in a high gear position, gear teeth on the inner edge of the high-low gear sliding sleeve 120 are meshed with gear teeth of the high-low gear cone hub 150, the high-low gear cone hub 150 is fixedly connected with a planet carrier of the planetary mechanism, the high-low gear sliding sleeve 120 is meshed with the gear ring, the planet carrier is combined with the gear ring at the moment, and the transmission ratio of the planetary mechanism is a high gear transmission ratio 1.
As shown in fig. 9, during the downshift, the high-low shift sliding sleeve 120 is moved toward the low shift synchronizing ring 10 by the shifting force F, see stage 1; at this time, a rotation speed difference Δ w exists between the low gear cone hub 160 and the low gear synchronizing ring 140, and then the inner edge gear tooth cone surface of the high-low gear sliding sleeve 120 contacts with the outer edge bevel surface of the low gear synchronizing ring 140, which is pre-synchronization at this time, in stage 2; the shifting force F continues to act to further push the high-low gear sliding sleeve 120 to further push the low-low gear synchronizing ring 140 to move towards the low-low gear cone hub 160, the second stage starts synchronously, the low-low gear cone hub 160 is contacted with the low-low gear cone hub 160 until the low-low gear synchronizing ring 140, the spiral groove breaks the oil film and starts to generate friction force, the shifting force F continues to act, the shifting force F is decomposed between the inner edge gear tooth conical surface of the high-low gear sliding sleeve 120 and the outer edge gear inclined surface of the low-low gear synchronizing ring 140, the shifting force F generates a shifting torque Tz on the inclined surface between the high-low gear sliding sleeve 120 and the low-low gear synchronizing ring 140, and the friction force generates a friction torque Tr 1 The spring 170 also generates a conical moment Tr 2 Correcting torque Tz and friction torque Tr 1 Conical moment Tr 2 The directions are opposite, so that a locking surface (a contact surface of the inclined surface of the low gear synchronous ring 140 and the conical surface of the high-low gear sliding sleeve) is locked; when the difference Δ w between the low-range cone hub 160 and the low-range synchronizer ring 140 is gradually eliminated, the friction torque Tr 1 Gradually disappears, the locking process begins to be released, and the correcting moment Tz is larger than the cone moment Tr 2 The low-gear synchronizing ring 140 rotates a certain angle relative to the high-low gear sliding sleeve 120, the two conical gear teeth are engaged, the high-gear synchronizing ring 130 is disengaged, and the conical torque Tr is applied 2 The function of the step (3), namely, the step (3) is rotated for a certain angle relative to the high-low gear sliding sleeve 120; the high-low gear sliding sleeve 120 continues to move, the inner edge gear tooth conical surface of the high-low gear sliding sleeve contacts with the gear conical surface of the low-low gear conical hub 160, the gears of the high-low gear sliding sleeve and the low-low gear conical hub are meshed, and the synchronization is finished, namely, the stages 4 and 5.
The utility model relates to an electrodynamic type commercial car rear auxiliary box shift actuating mechanism, adopt direct current brushless motor, detect the rotor position and calculate and obtain the shift fork shaft displacement of shifting, realize the accurate regulation of the stroke of shifting; the motor drives the screw nut structure to drive the shifting fork shaft, the transmission structure is simple and efficient, and the lever mechanism is arranged at the position of the shifting fork, so that the shifting force is increased, the driving pressure of the motor is reduced, meanwhile, the force required by gear shifting can be ensured, and the power of the motor is reduced; adopt the high-low gear synchronizer of novel structure, have 6 installation spring's fixed protruding, make synchronizer overall structure simplify, be favorable to the lightweight of gearbox, this synchronizer gear shift is rapid, accurate can also reduce the impact extension derailleur life that the gear shift brought, compact structure reaches reduce cost's purpose.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, particular embodiments, but rather to those skilled in the art, having the benefit of the teachings of the present invention, which is capable of numerous modifications and alternative forms, and will be readily apparent to those skilled in the art, and it is not intended to limit the invention to the details shown and described without departing from the general concepts defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides an auxiliary box actuating mechanism that shifts behind electrodynamic type commercial car which characterized in that includes:
a housing; and
a shift motor fixed within the housing;
the screw rod is connected with the output end of the gear shifting motor;
the gear shifting fork shaft is detachably connected with the nut of the lead screw;
the gear shifting fork comprises a fork head end and a fork mouth end, the fork head end is clamped on the gear shifting fork shaft, and the middle part of the fork mouth end is rotatably fixed in the shell;
the outer side of the high-low gear sliding sleeve is meshed with a gear ring of the planetary mechanism, and the high-low gear sliding sleeve is rotatably clamped with the fork opening end;
the high-gear synchronizing ring is arranged on the inner side of the high-gear sliding sleeve and selectively meshed with the high-gear sliding sleeve, and a plurality of first fixing bulges are sequentially arranged at intervals at one end of the high-gear synchronizing ring;
the low-gear synchronizing ring is arranged on the inner side of the high-low gear sliding sleeve and is selectively meshed with the high-low gear sliding sleeve, and a plurality of second fixing bulges are sequentially arranged at intervals at one end of the low-gear synchronizing ring;
the springs are respectively arranged between the first fixing bulges and the second fixing bulges in a one-to-one correspondence manner, so that the gear teeth of the high-gear synchronizing ring and the low-gear synchronizing ring are staggered;
the high-gear cone hub is arranged at the other end of the high-gear synchronizing ring and is connected with a planet carrier of the planetary mechanism;
the low-gear cone hub is arranged at the other end of the low-gear synchronizing ring and is fixed in the shell;
wherein, the high-low gear sliding sleeve is selectively connected with the high-low gear cone hub or the low-low gear cone hub.
2. The electric commercial vehicle rear sub-box shift actuator according to claim 1, wherein the shift motor is a dc brushless motor.
3. The electric commercial vehicle range back sub-section shift actuator of claim 2, wherein the lead screw nut has an annular stepped flange at one end.
4. The electric commercial vehicle rear sub-box shift actuator according to claim 3, wherein one end of the shift rail has an arc-shaped slot;
wherein, the arc-shaped groove is mutually clamped with the annular step-shaped flange.
5. The electric commercial vehicle range gate shift actuator of claim 4, further comprising:
the annular groove is arranged on the outer side of the high-low gear sliding sleeve;
and the fork opening end is rotationally clamped with the annular groove clamp.
6. The electric type shift actuating mechanism for a rear auxiliary box of a commercial vehicle as claimed in claim 5, wherein both ends of the inner gear teeth of the high-low gear sliding sleeve are of a conical surface structure.
7. The electric commercial vehicle rear auxiliary box shift actuating mechanism according to claim 6, wherein the outer gear teeth of the high gear synchronizing ring and the low gear synchronizing ring are both of a bevel structure;
and the high-low gear sliding sleeve and the high-low gear synchronous ring or the low-low gear synchronous ring can be selectively locked.
8. The electric commercial vehicle rear sub-box shift actuator of claim 7, wherein the outer gear teeth of the high-speed cone hub and the low-speed cone hub are of a tapered structure.
9. The electric commercial vehicle range bin shift actuator of claim 8 wherein the high and low synchronizing rings are both friction cones and have helical grooves on the inner sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221189535.4U CN217481945U (en) | 2022-05-18 | 2022-05-18 | Auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221189535.4U CN217481945U (en) | 2022-05-18 | 2022-05-18 | Auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217481945U true CN217481945U (en) | 2022-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221189535.4U Active CN217481945U (en) | 2022-05-18 | 2022-05-18 | Auxiliary case actuating mechanism that shifts behind electrodynamic type commercial car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217481945U (en) |
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2022
- 2022-05-18 CN CN202221189535.4U patent/CN217481945U/en active Active
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