CN115257984A - Traction device for semitrailer - Google Patents
Traction device for semitrailer Download PDFInfo
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- CN115257984A CN115257984A CN202211166649.1A CN202211166649A CN115257984A CN 115257984 A CN115257984 A CN 115257984A CN 202211166649 A CN202211166649 A CN 202211166649A CN 115257984 A CN115257984 A CN 115257984A
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- frame
- arm
- traction
- seat
- tractor
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/14—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for both lifting and manoeuvring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to the technical field of traction devices, and provides a traction device for a semitrailer, which comprises a frame, a connecting assembly arranged on the frame, and a traction seat arranged on a tractor or a placing platform, wherein the connecting assembly and the traction seat are arranged in a matching way, and the traction device further comprises: the winch is arranged on the frame and used for pulling the frame to the traction seat; the supporting component is arranged on the frame and used for supporting the end part of the frame, the supporting component is provided with a plurality of steering rollers, and the steering rollers are used for driving the frame to move along with the dragging direction of the winch. Through above-mentioned technical scheme, the operating personnel needs higher operating level when having solved the change semitrailer frame among the correlation technique to and need great operating space scheduling problem.
Description
Technical Field
The invention relates to the technical field of traction devices, in particular to a traction device for a semitrailer.
Background
Among the prior art, the tractor needs to drive the tractor locomotive through the navigating mate and remove to the semitrailer frame, on connecting piece card that will be located on the semitrailer will be gone into the traction seat on the tractor locomotive through navigating mate's operation, realize the connection of tractor and semitrailer, when needing to change the semitrailer frame, operating personnel need take the semitrailer frame to the assigned position and park, and need be connected with the tractor for tractor reservation position convenience next time, lead to needing to set up fixed parking position for the semitrailer frame, and the position to the semitrailer frame is put and is had higher requirement, the process has higher requirement to operating personnel's operation level, and required operating space is great when the semitrailer parks.
Disclosure of Invention
The invention provides a traction device for a semitrailer, which solves the problems that in the related art, when a frame of the semitrailer is replaced, an operator needs a higher operation level, needs a larger operation space and the like.
The technical scheme of the invention is as follows:
draw gear for semitrailer is in including frame, setting coupling assembling on the frame is in with being used for setting up on the tractor or set up the traction seat on place the platform, coupling assembling with the traction seat cooperation sets up, still includes:
the winch is arranged on the frame and used for pulling the frame to the traction seat;
the support assembly is arranged on the frame and used for supporting the end part of the frame, the support assembly is provided with a plurality of steering rollers, and the steering rollers are used for driving the frame to move along with the dragging direction of the winch;
the connecting assembly includes:
the first mounting seat is arranged at the end part of the frame and provided with a first clamping cavity which is provided with a first clamping groove;
the first locking piece is arranged on the first mounting seat.
As a further technical solution, the support assembly includes:
a plurality of linear drive spare, the linear drive spare sets up in the frame tip, the linear drive spare includes:
the fixed end is arranged on the frame and is provided with a through hole;
the movable end is arranged on the fixed end in a sliding mode, the steering idler wheel is arranged on the movable end in a rotating mode, and the movable end is provided with a plurality of fixing holes;
and the fixing pin penetrates through the through hole and one fixing hole and is used for fixing the movable end.
As a further technical solution, the support assembly further includes:
one end of each supporting arm is hinged to the fixed end and is arranged on the fixed end at intervals along the circumferential direction;
the utility model discloses a bicycle frame, including support arm, a plurality of linking arm, the linking arm with the support arm one-to-one sets up, linking arm one end articulates on the support arm, the articulated setting of the other end of linking arm is in the activity is served, the activity end removes the back, a plurality of the other end of support arm is drawn close each other or is kept away from each other, the back is drawn close each other to the support arm, turn to the gyro wheel and keep away from ground, just the bottom of support arm is used for supporting the frame tip.
As a further technical solution, the supporting component further comprises:
the buffer wheel rotates and is arranged at the bottom of the supporting arm, and after the bottom of the supporting arm is contacted with the ground, the buffer wheel is used for rolling on the ground.
As a further technical solution, the method further comprises:
and the traction hanging ring is used for being arranged on the tractor or the placing platform.
As a further technical solution, the fifth wheel comprises:
the second mounting seat is used for being arranged on the tractor or the placing platform and is provided with a second clamping cavity, and the second clamping cavity is provided with a second clamping groove;
a second lock disposed on the second mount;
coupling assembling is close to behind the traction seat, first locking piece stretches into in the second joint recess, the second locking piece stretches into in the first joint recess, first locking piece with locking behind the cooperation of second locking piece.
As a further technical solution, the first lock and the second lock have the same structure, and both include:
the plug connector is arranged on the first mounting seat or the second mounting seat and is provided with an arc-shaped groove, and a circular groove is formed after the two arc-shaped grooves are matched;
the semicircular clamping piece is rotatably arranged in the arc-shaped groove;
the rotating arm is arranged on the semicircular clamping piece, penetrates through the arc-shaped groove and rotates along with the semicircular clamping piece;
one end of the tension spring is arranged on the rotating arm, the other end of the tension spring is arranged on the first mounting seat or the second mounting seat, and the tension spring is used for providing rotating force for the rotating arm.
As a further technical scheme, the tension spring and the rotating arm of the first locking piece are located in the first clamping cavity, the tension spring and the rotating arm of the second locking piece are located in the second clamping cavity, the rotating arm is provided with an operating handle, and the operating handle penetrates through the first clamping cavity or the second clamping cavity.
As a further technical solution, the second mount includes:
the supporting seat is used for being arranged on the tractor or the placing platform;
the rotating seat is rotatably arranged on the supporting seat through a rotating shaft, and the second locking piece is arranged on the rotating seat.
The working principle and the beneficial effects of the invention are as follows:
the invention discloses a traction device for a semitrailer, which aims to solve the problems that an operator needs higher operation level and needs larger operation space when replacing a semitrailer frame in the related technology. The method comprises the following steps that when the semi-trailer needs to be matched with a tractor, the tractor is driven into a designated position and then is tensioned to brake, so that the position of the tractor is fixed, a plurality of traction points are arranged in a stop area of the semi-trailer, a traction rope is connected to different fixed traction points to move towards the tractor, and finally the traction rope is fixed on a traction hanging ring on the tractor, so that a connecting assembly on a frame is connected with a traction seat; if the stopping position of the tractor is closer to the frame position of the semitrailer, the tractor can be directly connected through the traction rope to realize connection; when needs are berthhed, the tractor drives the semitrailer frame and gets into the regional department of berthing and can the disconnection, and hoist engine and haulage rope cooperation make the semitrailer frame get into place the platform department through different traction points. The operation can be completed without the driving experience of the semitrailer, and meanwhile, the stable parking of the frame and the connection and matching of the frame and the tractor can be guaranteed only by setting the traction point according to the actual field.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic three-dimensional structure of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is a schematic view of the structure of part A of FIG. 1;
FIG. 4 is a schematic view of the cross-sectional structure C-C of FIG. 2;
FIG. 5 is a schematic view of the structure of the portion B in FIG. 4;
FIG. 6 is a schematic view of a partial clamping state structure of the cross section D-D of FIG. 2;
FIG. 7 is a schematic view of the partial plug-in unit of FIG. 2 taken along the line D-D;
FIG. 8 is a schematic view of the structure of the section E of FIG. 6;
FIG. 9 is a schematic view of the structure of the portion F in FIG. 7;
in the figure: 1. the frame, 2, coupling assembling, 3, the tractor, 4, the traction seat, 5, the hoist engine, 6, supporting component, 7, the directive wheel, 8, linear driving piece, 9, the stiff end, 10, the thru hole, 11, the loose end, 12, the fixed orifices, 13, the fixed pin, 14, the support arm, 15, the linking arm, 16, the buffer wheel, 17, pull the link, 18, first mount pad, 19, first joint cavity, 20, first joint recess, 21, first locking piece, 22, the second mount pad, 23, the second joint cavity, 24, the second joint recess, 25, the second locking piece, 26, the plug connector, 27, the arc recess, 28, semicircle joint piece, 29, the rotor arm, 30, the extension spring, 31, the operating handle, 32, the supporting seat, 33, the rotor seat, 34, the axis of rotation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall relate to the scope of protection of the present invention.
As shown in FIGS. 1 to 9, the present embodiment proposes
Draw gear for semitrailer is in including frame 1, setting coupling assembling 2 on the frame is in with be used for setting up draw seat 4 on tractor 3 or setting up on place the platform, coupling assembling 2 with draw seat 4 cooperation setting still includes:
the winch 5 is arranged on the frame 1 and used for pulling the frame 1 to the traction seat 4;
the support assembly 6 is arranged on the frame 1 and used for supporting the end part of the frame 1, the support assembly 6 is provided with a plurality of steering rollers 7, and the steering rollers 7 are used for driving the frame 1 to move along with the dragging direction of the winch 5.
In this embodiment, in order to solve the problems that an operator needs a higher operation level and needs a larger operation space when replacing the frame 1 of the semitrailer in the related art, a traction apparatus for a semitrailer is designed, specifically, first, the winch 5 is arranged on the frame 1 of the semitrailer, that is, the driving unit is arranged on the frame 1, so that the winch 5 drives the frame 1 to move, compared with other driving units, the winch 5 can drive the whole frame 1 to move in a specified direction by the traction force of a rope or a chain by setting different fixed points on a path, without the operation of the operator, and at the same time, the occupied space of the tractor 3 is reduced, the frame 1 can move and stop through the winch 5 in a narrow space, and then the support roller 7 on the support assembly 6 is matched, the steering roller 7 steers by the traction direction of the traction rope or the chain, that is the force application direction, so as to realize the steering of the whole frame 1, and after the stopping, the support assembly 6 supports or retracts to cooperate with the tractor 3 to work according to practical situation. The method comprises the specific processes that when the method needs to be matched with a tractor 3, the tractor 3 is driven into a designated position, the brake is tightened to fix the position of the tractor 3, a plurality of traction points are arranged in the area where the semitrailer stops, the traction rope moves towards the tractor 3 by connecting the traction rope to different fixed traction points, and finally the traction rope is fixed on a traction hanging ring 17 on the tractor 3, so that a connecting assembly 2 on a frame 1 is connected with a traction seat 4; if the stopping position of the tractor 3 is closer to the frame 1 of the semitrailer, the tractor 3 can be directly connected through a traction rope to realize connection; when needs are berthhed, the tractor 3 drives the semitrailer frame 1 to enter the berthing area, namely the disconnection can be realized, and the winch 5 and the traction rope are matched to enable the semitrailer frame 1 to enter the placing platform through different traction points. The operation can be completed without the driving experience of the semitrailer, and meanwhile, the stable parking of the frame 1 and the connection and matching of the frame and the tractor 3 can be ensured only by setting the traction point according to the actual field.
As a further technical solution, the supporting component 6 includes:
a plurality of linear driving members 8, wherein the linear driving members 8 are disposed at the end of the vehicle frame 1, and each linear driving member 8 comprises:
a fixed end 9, wherein the fixed end 9 is arranged on the frame 1, and the fixed end 9 is provided with a through hole 10;
the movable end 11 is arranged on the fixed end 9 in a sliding mode, the steering roller 7 is arranged on the movable end 11 in a rotating mode, and the movable end 11 is provided with a plurality of fixing holes 12;
and a fixing pin 13 passing through the through hole 10 and one of the fixing holes 12 for fixing the movable end 11.
In this embodiment, in order to guarantee that frame 1 can be stable remove and connect, a supporting component 6 has been refined, specifically, it sets up a plurality of linear driving piece 8 at frame 1 tip that does not have the tire support, if realize linear drive through pneumatic cylinder or pneumatic cylinder, make the gyro wheel contact of rotating or contactless ground, and set up the fixed orifices 12 on expansion end 11 through setting up the thru hole 10 cooperation on stiff end 9 promptly the cylinder body, realize that the support of external force is fixed, fix through fixed pin 13 promptly, avoided the cylinder body to continuously receive hydraulic pressure or atmospheric pressure and lead to the waste of the energy, if adopt screw drive simultaneously, also can avoid the damage of tooth, the stability of structure has further been guaranteed.
As a further technical solution, the supporting component 6 further includes:
one end of each supporting arm 14 is hinged to the fixed end 9, and the supporting arms 14 are arranged on the fixed end 9 at intervals along the circumferential direction;
a plurality of linking arm 15, linking arm 15 with 14 one-to-one settings of support arm, 15 one end of linking arm articulates on support arm 14, the articulated setting of other end of linking arm 15 is in on the expansion end 11, after the expansion end 11 removed, a plurality of the other end of support arm 14 is drawn close each other or is kept away from each other, support arm 14 draws close the back each other, turn to gyro wheel 7 and keeps away from ground, just the bottom of support arm 14 is used for supporting 1 tip of frame.
In the embodiment, because the steering wheel is always in contact with the ground, when an external force acts, the frame 1 is easy to shift and move, and accidents are caused, so that the support assembly 6 is ensured to be in contact with the ground through the rotating roller in the moving process, and the support arms 14 are in contact with the ground in the parking process, a structure is designed, specifically, a plurality of hinged support arms 14 are arranged on the fixed end 9, and a connecting arm 15 is arranged between the bottom of each support arm 14 and a hinged point of each support arm 14 and the fixed end 9, so that when the movable end 11 moves downwards, namely the rotating roller moves downwards and contacts with the ground, the support arms 14 are far away from each other and move to the high place through the action of the connecting piece, so that the bottom of each support arm 14 is far away from the ground, and the rotating roller stably rotates, namely moves; when the movable end 11 moves upward, that is, the rotating roller moves upward to separate from the ground, the support arms 14 approach each other and gather together, and finally abut against each other, and the bottom ends of the support arms 14 form a plane to be supported on the ground, that is, a resting and supporting state.
As a further technical solution, the supporting component 6 further includes:
the buffer wheel 16 is rotatably arranged at the bottom of the supporting arm 14, and after the bottom of the supporting arm 14 is contacted with the ground, the buffer wheel 16 is used for rolling on the ground.
In this embodiment, if wearing and tearing take place easily for the bottom direct contact ground of support arm 14 to avoid wearing and tearing to lead to the place to destroy and support arm 14 wearing and tearing are serious, buffer wheel 16 has been set up at the tip of support arm 14, when the tip contact ground of support arm 14, at first rely on buffer wheel 16 to contact, the rethread pivoted form carries out the support after the lift with the tip of frame 1, the hard contact on support arm 14 and ground has been avoided, the stability of structure has been increased.
As a further technical solution, the method further comprises:
a traction hanging ring 17, wherein the traction hanging ring 17 is arranged on the tractor 3 or the placing platform.
As a further technical solution, the connection assembly 2 includes:
the first mounting seat 18 is arranged at the end part of the frame 1, the first mounting seat 18 is provided with a first clamping cavity 19, and the first clamping cavity 19 is provided with a first clamping groove 20;
a first locking member 21, wherein the first locking member 21 is arranged on the first mounting seat 18;
the fifth wheel 4 comprises:
the second mounting seat 22 is used for being arranged on the tractor 3 or the placing platform, and is provided with a second clamping cavity 23, and the second clamping cavity 23 is provided with a second clamping groove 24;
a second lock 25, wherein the second lock 25 is arranged on the second mounting seat 22;
coupling assembling 2 is close to behind the traction seat 4, first locking piece 21 stretches into in the second joint recess 24, second locking piece 25 stretches into in the first joint recess 20, first locking piece 21 with locking behind the second locking piece 25 cooperation.
As a further technical solution, the first lock 21 and the second lock 25 have the same structure, and both include:
the plug connector 26 is arranged on the first mounting seat 18 or the second mounting seat 22, and is provided with an arc-shaped groove 27, and the two arc-shaped grooves 27 are matched to form a circular groove;
the semicircular clamping piece 28 is rotatably arranged in the arc-shaped groove 27;
the rotating arm 29 is arranged on the semicircular clamping piece 28, penetrates through the arc-shaped groove 27 and rotates along with the semicircular clamping piece 28;
one end of the tension spring 30 is disposed on the rotating arm 29, the other end of the tension spring 30 is disposed on the first mounting seat 18 or the second mounting seat 22, and the tension spring 30 is configured to provide a force for rotating the rotating arm 29.
As a further technical solution, the tension spring 30 and the rotating arm 29 of the first locking member 21 are located in the first clamping cavity 19, the tension spring 30 and the rotating arm 29 of the second locking member 25 are located in the second clamping cavity 23, the rotating arm 29 has an operating handle 31, and the operating handle 31 passes through the first clamping cavity 19 or the second clamping cavity 23.
As a further technical solution, the second mounting seat 22 includes:
a support base 32, wherein the support base 32 is used for being arranged on the tractor 3 or the placing platform;
a rotating seat 33, wherein the rotating seat 33 is rotatably arranged on the supporting seat 32 through a rotating shaft 34, and the second locking member 25 is arranged on the rotating seat 33.
In this embodiment, because what current connecting piece and traction seat 4 relied on is the structural strength of connecting pin and traction seat 4, if the maintenance breaks easily and leads to unexpected the emergence when not in place, in order to strengthen the joint strength of frame 1 and tractor 3, a coupling assembling 2 and traction seat 4 have been designed, the haulage rope drives frame 1 and moves to tractor 3 direction when needs connect, after first locking piece 21 and second locking piece 25 contact, plug connector 26 on first locking piece 21 stretches into in second joint recess 24, plug connector 26 on second locking piece 25 stretches into in first joint recess 20, stretch into the in-process simultaneously, because the pulling force of extension spring 30 leads to rotating under the effect of plug connector 26 with semicircle joint 28 misplaced placement, until two semicircle joint pieces 28 get into the circular recess that two arc recesses 27 enclose simultaneously, two semicircle joint pieces 28 do not receive behind the spacing of plug connector 26 in the circular recess, rotating arm 29 resets under the effect of extension spring 30, after resetting, arc joint piece 28 and the place in the circular recess 27 circular recess, the firm joint piece that forms the joint through the handle of second locking piece 34, the handle connection between the operation handle that the second locking piece 21 and the second locking piece 21 can be connected, the handle needs to form again, the joint, the handle connection of the operation handle that the operation of the second locking piece 33 is more, the connection of the semicircle joint piece is realized through the semicircle joint that the semicircle joint is established, the semicircle joint piece 33, the semicircle joint is more.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. Draw gear for semitrailer is in including frame (1), setting coupling assembling (2) on frame (1) and be used for setting up on tractor (3) or set up traction seat (4) on place the platform, coupling assembling (2) with traction seat (4) cooperation sets up, its characterized in that still includes:
the winch (5) is arranged on the frame (1) and used for pulling the frame (1) to the traction seat (4);
the supporting component (6) is arranged on the frame (1) and used for supporting the end part of the frame (1), the supporting component (6) is provided with a plurality of steering rollers (7), and the steering rollers (7) are used for driving the frame (1) to move along with the dragging direction of the winch (5);
the connection assembly (2) comprises:
the first mounting seat (18) is arranged at the end part of the frame (1), the first mounting seat (18) is provided with a first clamping cavity (19), and the first clamping cavity (19) is provided with a first clamping groove (20);
a first latch (21), the first latch (21) being disposed on the first mounting seat (18).
2. Traction device for semitrailers according to claim 1, characterized in that said support assembly (6) comprises:
a plurality of linear drive members (8), linear drive member (8) set up in frame (1) tip, linear drive member (8) include:
the fixing end (9), the fixing end (9) is arranged on the frame (1), and the fixing end (9) is provided with a through hole (10);
the movable end (11) is arranged on the fixed end (9) in a sliding mode, the steering roller (7) is arranged on the movable end (11) in a rotating mode, and the movable end (11) is provided with a plurality of fixing holes (12);
and the fixing pin (13) penetrates through the through hole (10) and the fixing hole (12) and is used for fixing the movable end (11).
3. A towing attachment for semi-trailers according to claim 2, wherein the support assembly (6) further comprises:
one end of each supporting arm (14) is hinged to the fixed end (9) and is arranged on the fixed end (9) at intervals along the circumferential direction;
a plurality of linking arm (15), linking arm (15) with support arm (14) one-to-one sets up, linking arm (15) one end articulates on support arm (14), the other end of linking arm (15) articulates and sets up on expansion end (11), expansion end (11) remove the back, a plurality of the other end of support arm (14) is drawn close each other or is kept away from each other, support arm (14) draw close the back each other, ground is kept away from to turn to gyro wheel (7), just the bottom of support arm (14) is used for supporting frame (1) tip.
4. Traction device for semitrailers according to claim 3 characterized in that said support assembly (6) further comprises:
the buffer wheel (16) is rotationally arranged at the bottom of the supporting arm (14), and after the bottom of the supporting arm (14) is contacted with the ground, the buffer wheel (16) is used for rolling on the ground.
5. The hitch device of claim 1, further comprising:
the traction hanging ring (17) is used for being arranged on the tractor (3) or the placing platform.
6. Traction device for semitrailers according to claim 1, characterized in that said traction base (4) comprises:
the second mounting seat (22) is used for being arranged on the tractor (3) or the placing platform, and is provided with a second clamping cavity (23), and the second clamping cavity (23) is provided with a second clamping groove (24);
a second lock (25), the second lock (25) being disposed on the second mount (22);
coupling assembling (2) are close to behind traction seat (4), first locking piece (21) stretch into in second joint recess (24), second locking piece (25) stretch into in first joint recess (20), first locking piece (21) with locking behind second locking piece (25) cooperation.
7. Traction device for semitrailers according to claim 6, characterized in that said first (21) and second (25) locking members have the same structure, both comprising:
the plug connector (26) is arranged on the first mounting seat (18) or the second mounting seat (22) and is provided with an arc-shaped groove (27), and the two arc-shaped grooves (27) are matched to form a circular groove;
the semicircular clamping piece (28) is rotationally arranged in the arc-shaped groove (27);
the rotating arm (29) is arranged on the semicircular clamping piece (28), penetrates through the arc-shaped groove (27) and rotates along with the semicircular clamping piece (28);
extension spring (30), extension spring (30) one end sets up on rotor arm (29), the other end setting of extension spring (30) is in first mount pad (18) or on second mount pad (22), extension spring (30) are used for providing rotor arm (29) pivoted power.
8. The towing attachment for semitrailers according to claim 7, characterized in that the tension spring (30) and the swivel arm (29) of the first locking element (21) are located in the first clamping cavity (19), the tension spring (30) and the swivel arm (29) of the second locking element (25) are located in the second clamping cavity (23), the swivel arm (29) having an operating handle (31), the operating handle (31) passing through the first clamping cavity (19) or the second clamping cavity (23).
9. The towing attachment for semitrailers according to claim 6 wherein the second mount (22) includes:
a support base (32), wherein the support base (32) is used for being arranged on the tractor (3) or the placing platform;
the rotary seat (33) is rotatably arranged on the supporting seat (32) through a rotary shaft (34), and the second locking piece (25) is arranged on the rotary seat (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166649.1A CN115257984B (en) | 2022-09-23 | 2022-09-23 | Traction device for semitrailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211166649.1A CN115257984B (en) | 2022-09-23 | 2022-09-23 | Traction device for semitrailer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115257984A true CN115257984A (en) | 2022-11-01 |
| CN115257984B CN115257984B (en) | 2023-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211166649.1A Active CN115257984B (en) | 2022-09-23 | 2022-09-23 | Traction device for semitrailer |
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| CN (1) | CN115257984B (en) |
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| CN115257984B (en) | 2023-01-06 |
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