CN113212572A - Follow-up device for driving semitrailer carriage to turn and move backwards and semitrailer - Google Patents
Follow-up device for driving semitrailer carriage to turn and move backwards and semitrailer Download PDFInfo
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- CN113212572A CN113212572A CN202110432021.0A CN202110432021A CN113212572A CN 113212572 A CN113212572 A CN 113212572A CN 202110432021 A CN202110432021 A CN 202110432021A CN 113212572 A CN113212572 A CN 113212572A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D53/00—Tractor-trailer combinations; Road trains
- B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
- B62D53/08—Fifth wheel traction couplings
- B62D53/0807—Fifth wheel traction couplings adjustable coupling saddles mounted on sub-frames; Mounting plates therefor
- B62D53/0814—Fifth wheel traction couplings adjustable coupling saddles mounted on sub-frames; Mounting plates therefor with adjustment of the clearance between the tractor or the trailer
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Abstract
The invention discloses a follow-up device for driving a semitrailer carriage to turn and move backwards and a semitrailer. When the semitrailer turns, the driving mechanism drives the two transmission worms of the generating mechanism to reversely rotate along with the included angle formed by the tractor cab and the axis of the semitrailer carriage, so that the crank block mechanism drives the saddle to longitudinally move backwards, the follow-up backward movement adjustment of the semitrailer carriage is realized, and the gap between the tractor cab and the semitrailer carriage of the semitrailer is enlarged; along with the resetting after the turning is finished, the whole vehicle is restored to the state of reducing the wind resistance. The following device can reduce the clearance between the tractor cab and the semi-trailer carriage of the semi-trailer so as to achieve the purpose of reducing the wind resistance and the oil consumption of the semi-trailer and overcome the problem of turning. The semitrailer with the follow-up device has smaller wind resistance and lower energy consumption, thereby reducing the transportation cost.
Description
Technical Field
The invention relates to the field of semitrailers, in particular to a follow-up device for driving a semitrailer carriage to turn and move backwards and a semitrailer.
Background
The market competition of semitrailers is becoming more intense, which requires manufacturers to reduce fuel consumption, improve the transportation capacity, reduce the wind resistance of trucks and thus improve the market competitiveness. It has been proved that when the vehicle is running at a high speed, the maximum resistance is derived from air, the higher the speed of the vehicle, the greater the air resistance experienced by the vehicle, and the increase in air resistance is proportional to the square of the increase in vehicle speed. Experiments have shown that almost half of the fuel consumption is used to overcome the air resistance when the vehicle speed is higher than 80km per hour.
The semi-trailer has surface resistance as the resistance in running. The surface resistance refers to the frictional resistance generated when the air flow passes through the outer surface of the vehicle, and the resistance is mainly caused by the shape of the vehicle body and the interference of parts installed outside the vehicle body to the air flow. And part of the resistance is that the clearance between the tractor cab and the semi-trailer compartment of the semi-trailer is large, about 1.5 meters, and a vortex is formed in the running process, so that a large wind resistance is generated, which accounts for 25 percent of the whole wind resistance, particularly accounts for 3 to 5 percent of the total oil consumption when the semi-trailer runs at high speed. And for reducing the clearance between the tractor cab and the semi-trailer carriage of the semi-trailer, the front corner of the semi-trailer carriage and the rear edge of the tractor cab are in interference contact when the semi-trailer is turned, so that the turning of the semi-trailer is blocked.
Disclosure of Invention
The invention aims to solve the technical problem of providing a follow-up device for driving a semi-trailer carriage to move backwards and drive the semi-trailer carriage to move backwards in a follow-up manner when a semi-trailer turns, so that the gap between a tractor cab and the semi-trailer carriage of the semi-trailer can be reduced, the wind resistance of the semi-trailer can be reduced, the problem that the front angle of the semi-trailer carriage interferes with the rear edge of the tractor cab when the semi-trailer turns is solved, and the semi-trailer can enter a low wind resistance running state again after turning.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a follow-up device that drive semitrailer carriage turned backward which characterized in that: the follow-up device is positioned between the tractor and the semi-trailer carriage and comprises a saddle, a crank sliding block mechanism, a generating mechanism and a driving mechanism; the saddle is positioned at the rear of the tractor and is connected with the semi-trailer carriage through a traction pin shaft; the generating mechanism comprises two transmission worms which are parallel to each other along the longitudinal direction and are arranged at intervals, and a roll gear train which drives the two transmission worms to rotate reversely, the roll gear train is arranged along the transverse direction and consists of an even number of transmission gears which are meshed with each other, and the two transmission worms are respectively connected with the transmission gears which are positioned at the two ends of the roll gear train; the driving mechanism is connected with any transmission gear in the pair of rolling gear systems and drives the transmission gears to rotate; the crank sliding block mechanism comprises a central worm wheel, an eccentric vertical pin shaft and a saddle sliding block, wherein the central worm wheel is arranged between the two transmission worms and meshed with the two transmission worms, the eccentric vertical pin shaft is arranged on the upper surface of the central worm wheel, the saddle sliding block is fixed to a saddle, a transverse groove is formed in the front end of the saddle sliding block, the rear end of the saddle sliding block is arranged in a longitudinal sliding groove, the eccentric pin shaft is located in the transverse groove, the transverse length value of the transverse groove is larger than or equal to twice of the distance value between the eccentric pin shaft and the center of the central worm wheel, and the saddle sliding block can rotate along with the eccentric pin.
The further technical scheme is as follows: the driving mechanism comprises a follow-up pin, a follow-up rocker and a driving gear train; the follow-up rocker is arranged along the longitudinal direction and is provided with a longitudinal groove, and the rear end of the follow-up rocker is hinged with the tractor; the follow-up pin is positioned in front of the traction pin shaft and is vertically arranged, the upper end of the follow-up pin is fixed at the front end of the bottom of the semi-trailer carriage, and the lower end of the follow-up pin is arranged in the longitudinal groove of the follow-up rocker and can slide along the longitudinal groove; and the driving gear train comprises a driving conical gear fixed with the rear end of the follow-up rocker, a driven conical gear meshed with the driving conical gear is arranged below the driving conical gear, and the driven conical gear is connected with any transmission gear in the roller gear train through a main transmission shaft.
The further technical scheme is as follows: the driving bevel gear is of a fan-shaped structure.
The further technical scheme is as follows: a transition gear train is also arranged between the main transmission shaft and the counter-rolling gear train.
The further technical scheme is as follows: the transition gear train comprises a first transition gear connected with the main transmission shaft, a second transition gear meshed with the first transition gear, a third transition gear connected with the second transition gear through the transmission shaft, and a fourth transition gear meshed with the third transition gear, and the fourth transition gear is connected with any one transmission gear in the pair-rolling gear train.
The further technical scheme is as follows: the driving mechanism comprises a servo motor connected with any transmission gear in the roller gear train, and the control input end of the servo motor is connected with the control output end of a controller.
The further technical scheme is as follows: the distance between the shaft of the eccentric pin and the center of the central worm gear is more than or equal to 300-360 mm.
The further technical scheme is as follows: the pair of rolling gears is composed of four transmission gears which are meshed with each other.
A semi-trailer, characterized in that: the servo device is provided with any one of the follow-up devices.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the follow-up device can achieve the purpose of reducing the wind resistance and the oil consumption of the semitrailer under the condition of reducing the gap between the tractor cab and the semitrailer carriage of the semitrailer, and the problem that the front corner of the semitrailer carriage interferes with the rear edge of the tractor cab when the semitrailer turns due to the fact that the gap between the tractor cab and the semitrailer carriage is reduced due to the fact that the semitrailer moves backwards in the follow-up longitudinal direction when the semitrailer turns is solved.
When the semitrailer turns, the driving mechanism drives the two transmission worms of the generating mechanism to reversely rotate along with the included angle formed by the tractor cab and the axis of the semitrailer carriage, so that the crank block mechanism drives the saddle to longitudinally move backwards, the follow-up backward movement adjustment of the semitrailer carriage is realized, and the gap between the tractor cab and the semitrailer carriage of the semitrailer is enlarged; and when the relative rotation returns to the straight-ahead state after the turning is finished, the driving mechanism drives the two transmission worms of the generating mechanism to reversely rotate in opposite directions, so that the crank-slider mechanism drives the saddle to longitudinally move forwards, the saddle can be moved forwards along with the turning when the turning is finished and the straight-ahead state is restored, the gap between the cab of the tractor and the semi-trailer carriage is reduced again, and the whole vehicle returns to the state of reducing the wind resistance.
And the transmission form that adopts worm and worm wheel complex has certain self-locking function, can prevent that the semitrailer carriage from taking place the displacement in the straight line transportation.
Therefore, the semitrailer with the follow-up device has smaller wind resistance and lower energy consumption, thereby reducing the transportation cost and improving the market competitiveness of the semitrailer.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a schematic diagram of a second embodiment of the present invention;
fig. 5 is a schematic structural view of a semitrailer of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the description of the embodiments given herein without making any inventive step, are within the scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Example one
It should be noted that, in the present technical solution, "transverse" is a width direction of the semitrailer, and "longitudinal" is a length direction of the semitrailer.
A follow-up device for driving a semitrailer carriage to turn backwards is located between a tractor 100 and a semitrailer carriage 200, the bottom of the follow-up device is fixed with the tractor 100, and the follow-up device comprises a saddle 1, a crank block mechanism, a generating mechanism and a driving mechanism, as shown in figures 1-3.
The saddle 1 is positioned at the rear part of the tractor 100 and is connected with the semi-trailer carriage 200 through a traction pin shaft, and when the semi-trailer turns, the semi-trailer carriage 200 rotates along the traction pin shaft.
The generating mechanism comprises two transmission worms 21 which are parallel along the longitudinal direction and are arranged at intervals, and a pair of rolling gear systems 22 which drive the two transmission worms 21 to rotate reversely, wherein the pair of rolling gear systems 22 are arranged along the transverse direction and are composed of an even number of transmission gears which are meshed with each other, and the two transmission worms 21 are respectively connected with the transmission gears which are positioned at the two ends of the pair of rolling gear systems 22; the number of the transmission gears included in the counter-rolling gear train 22 is to satisfy the requirement of the transverse width dimension after the plurality of transmission gears are meshed, and is to meet the setting of an even number so as to drive the two transmission worms 21 to rotate reversely.
A driving mechanism connected to any one of the transmission gears in the pair of roller gear trains 22 and driving the same to rotate; specifically, the driving mechanism comprises a follow-up pin 41, a follow-up rocker 42 and a driving gear train; the follow-up rocker 42 is arranged along the longitudinal direction and is provided with a longitudinal slot 421, and the rear end of the follow-up rocker 42 is hinged with the towing vehicle 100; the follow-up pin 41 is positioned in front of the traction pin shaft and is vertically arranged, the upper end of the follow-up pin is fixed at the front end of the bottom of the semi-trailer carriage 200, and the lower end of the follow-up pin is arranged in the longitudinal groove 421 of the follow-up rocker 42 and can slide along the longitudinal groove 421; the driving gear train comprises a driving conical gear 43 fixed with the rear end of the follow-up rocker 42, a driven conical gear 44 meshed with the driving conical gear 43 is arranged below the driving conical gear 43, and the driven conical gear 44 is connected with any transmission gear in the roller gear train 22 through a main transmission shaft.
The primary purpose of the drive mechanism is to drive the roller gear train 22 in operation. When the semitrailer turns, the tractor cab and the axis of the semitrailer car 200 form an included angle, the tractor 100 drives the lower part of the follow-up device to deflect relative to the semitrailer car 200, and the follow-up rocker 42 does not deflect. However, for the sake of illustration, the fixed reference is set as the towing vehicle 100, and the semi-trailer 200 rotates relative to the towing vehicle 100 along the towing pin, which causes the follower pin 41 installed at the front of the semi-trailer 200 to pull the follower rocker 42, so that the follower rocker 42 drives the driving bevel gear 43 to swing transversely, and the driven bevel gear 44 rotates due to the engagement of the driven bevel gear 44 with the driving bevel gear 43, and the transmission gear in the counter-rolling gear train 22 is connected with the driven bevel gear 44, so that the operation of the counter-rolling gear train 22 is finally started.
The crank sliding block mechanism comprises a central worm wheel 31, an eccentric pin shaft 32 and a saddle sliding block 33, wherein the central worm wheel 31 is arranged between the two transmission worms 21 and meshed with the two transmission worms 21, the eccentric pin shaft 32 is eccentrically and vertically arranged on the upper surface of the central worm wheel 31, the saddle sliding block 33 is fixed to the saddle 1 through the upper surface of the saddle sliding block, a transverse groove 331 is formed in the front end of the saddle sliding block 33, the rear end of the saddle sliding block is arranged in the longitudinal sliding groove 34, the transverse length value of the transverse groove 331 is larger than or equal to twice of the distance value between the eccentric pin shaft 32 and the center of the central worm wheel 31, the eccentric pin shaft 32 is located in the transverse groove 331, and the saddle sliding block 33 can reciprocate along the longitudinal sliding groove 34 along with the rotation of the eccentric pin shaft 32. In the transportation process, when the eccentric pin shaft 32 is positioned at the foremost end of the central worm wheel 31, the gap between the tractor cab of the semitrailer and the semitrailer compartment 200 is the smallest, and the semitrailer is suitable for a linear transportation state. When the eccentric pin shaft 32 is located at the rearmost end of the central worm wheel 31, the gap between the tractor cab of the semi-trailer and the semi-trailer compartment 200 is the largest, and the semi-trailer is suitable for a turning transportation state.
The function of the crank-slider mechanism is to drive the saddle 1 to move back longitudinally or move forward longitudinally to reset along with the generating mechanism, so as to change the gap between the tractor cab and the semitrailer compartment 200. When the semitrailer turns, the counter-rolling gear system 22 drives the two transmission worms 21 to rotate in opposite directions, so that the two transmission worms 21 jointly drive the central worm wheel 31 to rotate, the eccentric pin shaft 32 rotates by taking the center of the central worm wheel 31 as a circle center according to the working principle of the slider-crank mechanism, and the eccentric pin shaft 32 is positioned in the transverse groove 331, so that the rear end of the saddle slider 33 is driven to longitudinally move backwards in the longitudinal sliding groove 34, the gap between the tractor cab and the semitrailer carriage 200 is increased, and the interference of the semitrailer carriage 200 on the locomotive during turning is overcome.
And because the transverse length value of the transverse groove 331 is more than or equal to two times of the distance value between the eccentric pin shaft 32 and the center of the central worm wheel 31, the eccentric pin shaft 32 can do circular motion in the transverse groove 331 by taking the center of the central worm wheel 31 as the center of a circle, and no matter the eccentric pin shaft 32 rotates clockwise or anticlockwise, the steering of 180 degrees can be completed, and the longitudinal backward movement of the semi-trailer 200 is completed. The clockwise or anticlockwise rotation of the eccentric pin shaft 32 is determined by the left turn or the right turn of the semi-trailer, so that the servo device is not restricted by the steering of the semi-trailer.
The following device can realize that no vortex is generated under the condition of reducing the clearance between the tractor cab and the semi-trailer carriage 200 of the semi-trailer so as to achieve the aim of reducing the wind resistance and the oil consumption of the semi-trailer, and can overcome the problem that the front angle of the semi-trailer carriage interferes with the rear edge of the tractor cab during turning caused by reducing the clearance between the tractor cab and the semi-trailer carriage 200 when the semi-trailer turns.
When the semitrailer turns, the driving mechanism drives the two transmission worms 21 of the generating mechanism to reversely rotate along with the included angle formed by the tractor cab and the axis of the semitrailer carriage, so that the crank block mechanism drives the saddle to longitudinally move backwards, the follow-up backward movement adjustment of the semitrailer carriage is realized, and the gap between the tractor cab of the semitrailer and the semitrailer carriage 200 is enlarged.
And when the relative rotation returns to the straight-going state after the turning is finished, in the process that the axes of the tractor cab and the semi-trailer 200 tend to be in the same straight line again, the follow-up pin 41 stirs the follow-up rocker 42 to reversely swing and reset, the driving mechanism drives the two transmission worms 21 of the generating mechanism to reversely rotate in the opposite direction, so that the crank-slider mechanism drives the saddle 1 to longitudinally move forwards and reset, the gap between the tractor cab and the semi-trailer 200 is reduced again, and the whole vehicle returns to the running state with small wind resistance.
In the embodiment, a transmission form that the worm is matched with the worm wheel is adopted, and a certain self-locking function is realized. The worm and gear transmission mode belongs to worm transmission, and the worm transmission is equivalent to spiral transmission, and just because of the transmission mode, when the worm and gear reach a certain speed ratio, and when the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the meshing wheel, the mechanism has self-locking property, and can realize reverse self-locking, namely, the worm can only drive the worm wheel by the worm, but not drive the worm by the worm wheel. The semi-trailer 200 can be prevented from being displaced in the linear transportation process due to the fact that the semi-trailer 200 is heavy after being loaded and inertia. That is, the semitrailer car 200 can be prevented from moving forward and colliding with the tractor 100 during braking, and the semitrailer car 200 can be prevented from moving backward during starting, thereby enlarging the gap between the tractor cab and the semitrailer car 200. The safety performance of the transmission form is higher.
Example two
As shown in fig. 4, the specific structure of the driving mechanism can be replaced by a servo motor 51 connected to any transmission gear of the roller gear train 22, and a control input end of the servo motor 51 is connected to a control output end of a controller 52.
The controller 52 is a programmable logic controller based on a PLC, and a control button of the controller 52 is provided in a cab of the tractor, so that a driver can control and operate the tractor during turning. Specifically, when the semitrailer enters a turning state, a driver presses a start button, and the controller 52 controls the servo motor 51 to operate, so that the operation start of the rolling gear train 22 is realized, and the semitrailer compartment 200 is moved backwards in the longitudinal direction. When the relative rotation returns to the straight-going state after the turning is finished, the crank part rotates for a circle to drive the saddle 1 to longitudinally move backwards and forwards for resetting, and the semi-trailer enters the running state with small wind resistance again.
But activation of the controller 52 may also be initiated by sensor sensing for purposes of automatic operation. A distance sensor and an inductor which are mutually inducted are respectively arranged at the front end of the semi-trailer 200 and the tractor 100, wherein the distance sensor is connected with the signal input end of the controller 52, thereby controlling the servo motor 51 to start. When the distance sensor cannot sense the sensing body, namely the semitrailer enters a turning state, the distance sensor transmits a signal to the controller 52, and the controller 52 controls the servo motor 51 to start.
EXAMPLE III
As further preferred in the first and second embodiments, the driving bevel gear 43 is in a fan-shaped structure, so that the driving force for the driving bevel gear 43 can be reduced, the sensing is sensitive, and the central angle of the driving bevel gear is determined by the maximum turning angle required by the semitrailer.
Moreover, in order to ensure that the saddle 1 drives the semitrailer car 200 to make a sufficient distance backwards during turning, the gap between the tractor 100 and the semitrailer car 200 can be minimized, and the wind resistance of the semitrailer in the running process can be reduced to the maximum extent. The distance between the eccentric pin shaft 32 and the center of the central worm wheel 31 is more than or equal to 300-360 mm.
And further, the pair of roller gear trains 22 are constituted by four transmission gears that mesh with each other. The four transmission gears which are meshed with each other meet the functional requirements and can also meet the requirements on transverse width and strength.
Example four
For the first embodiment, a transition gear train is also provided between the main drive shaft and the roller gear train 22. According to the use requirement, the device is used for meeting the longitudinal distance and the transmission ratio.
Specifically, the transition gear train includes a first transition gear 45 connected to the main transmission shaft, a second transition gear 45 engaged with the first transition gear 45, a third transition gear 47 connected to the second transition gear 45 through the transmission shaft, and a fourth transition gear 48 engaged with the third transition gear 47, where the fourth transition gear 48 is connected to any one of the transmission gears in the pair of rolling gears 22.
EXAMPLE five
A semitrailer, as shown in fig. 5, has a follower device according to any one of the above embodiments.
Due to the setting of the follow-up device, the semi-trailer with the follow-up device has smaller wind resistance and lower energy consumption, thereby reducing the transportation cost and improving the market competitiveness of the semi-trailer.
The above is only a preferred embodiment of the invention, and any simple modifications, variations and equivalents of the invention may be made by anyone in light of the above teachings and fall within the scope of the invention.
Claims (9)
1. The utility model provides a follow-up device that drive semitrailer carriage turned backward which characterized in that:
the follow-up device is positioned between the tractor (100) and the semi-trailer carriage (200), and comprises a saddle (1), a slider-crank mechanism, a generating mechanism and a driving mechanism;
the saddle (1) is positioned behind the tractor (100) and is connected with the semi-trailer carriage (200) through a traction pin shaft;
the generating mechanism comprises two transmission worms (21) which are parallel in the longitudinal direction and are arranged at intervals, and a rolling gear train (22) which drives the two transmission worms (21) to rotate reversely, wherein the rolling gear train (22) is arranged along the transverse direction and consists of an even number of transmission gears which are meshed with each other, and the two transmission worms (21) are respectively connected with the transmission gears at the two ends of the rolling gear train (22);
the driving mechanism is connected with any transmission gear in the roller gear train (22) and drives the roller gear train to rotate;
the crank sliding block mechanism comprises a central worm wheel (31) arranged between two transmission worms (21) and meshed with the two transmission worms (21), an eccentric pin shaft (32) eccentrically and vertically arranged on the upper surface of the central worm wheel (31), and a saddle sliding block (33) with the upper surface fixed with a saddle (1), wherein a transverse groove (331) is formed in the front end of the saddle sliding block (33), the rear end of the saddle sliding block is arranged in a longitudinal sliding groove (34), the eccentric pin shaft (32) is positioned in the transverse groove (331), the transverse length value of the transverse groove (331) is larger than or equal to twice of the distance value between the eccentric pin shaft (32) and the center of the central worm wheel (31), and the saddle sliding block (33) can rotate along with the eccentric pin shaft (32) and can reciprocate along the longitudinal sliding groove (34).
2. The follow-up device for driving the semitrailer carriage to turn backward according to claim 1, wherein:
the driving mechanism comprises a follow-up pin (41), a follow-up rocker (42) and a driving gear train;
the follow-up rocker (42) is arranged along the longitudinal direction and is provided with a longitudinal groove (421), and the rear end of the follow-up rocker (42) is hinged with the tractor (100);
the follow-up pin (41) is positioned in front of the traction pin shaft and is vertically arranged, the upper end of the follow-up pin is fixed at the front end of the bottom of the semi-trailer carriage (200), and the lower end of the follow-up pin is arranged in a longitudinal groove (421) of the follow-up rocker (42) and can slide along the longitudinal groove (421);
the driving gear train comprises a driving conical gear (43) fixed with the rear end of the follow-up rocker (42), a driven conical gear (44) meshed with the driving conical gear (43) is arranged below the driving conical gear (43), and the driven conical gear (44) is connected with any transmission gear in the roller gear train (22) through a main transmission shaft.
3. The follow-up device for driving the semitrailer carriage to turn backward according to claim 2, characterized in that: the driving conical gear (43) is of a fan-shaped structure.
4. The follow-up device for driving the semitrailer carriage to turn backward according to claim 2, characterized in that: a transition gear train is also arranged between the main transmission shaft and the rolling gear train (22).
5. The follow-up device for driving the semitrailer carriage to turn backward according to claim 4, wherein: the transition gear train comprises a first transition gear (45) connected with the main transmission shaft, a second transition gear (45) meshed with the first transition gear (45), a third transition gear (47) connected with the second transition gear (45) through the transmission shaft, and a fourth transition gear (48) meshed with the third transition gear (47), wherein the fourth transition gear (48) is connected with any transmission gear in the rolling gear train (22).
6. The follow-up device for driving the semitrailer carriage to turn backward according to claim 1, wherein: the driving mechanism comprises a servo motor (51) connected with any transmission gear in the roller gear train (22), and the control input end of the servo motor (51) is connected with the control output end of a controller (52).
7. The follow-up device for driving the semitrailer carriage to turn backward according to claim 1, wherein: the distance between the eccentric pin shaft (32) and the center of the central worm wheel (31) is more than or equal to 300-360 mm.
8. The follow-up device for driving the semitrailer carriage to turn backward according to claim 1, wherein: the pair of roller gear trains (22) are composed of four transmission gears meshed with each other.
9. A semi-trailer, characterized in that: having a follower device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432021.0A CN113212572A (en) | 2021-04-21 | 2021-04-21 | Follow-up device for driving semitrailer carriage to turn and move backwards and semitrailer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110432021.0A CN113212572A (en) | 2021-04-21 | 2021-04-21 | Follow-up device for driving semitrailer carriage to turn and move backwards and semitrailer |
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| CN113212572A true CN113212572A (en) | 2021-08-06 |
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| US20110295470A1 (en) * | 2008-01-30 | 2011-12-01 | Volvo Group North America, Llc | Tractor trailer gap control system |
| CN102387956A (en) * | 2009-03-30 | 2012-03-21 | 约斯特-沃克有限公司 | System for reducing the air resistance of a truck |
| CN102387957A (en) * | 2009-04-09 | 2012-03-21 | 约斯特-韦克有限公司 | Method and control system for a fifth wheel coupling sliding device having detection of the bent position of towing vehicles and trailers |
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| CN106573655A (en) * | 2014-08-05 | 2017-04-19 | 萨夫-霍兰德有限公司 | Active fifth wheel repositioning slider |
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