CN115284800A - Locking device of semitrailer traction seat - Google Patents
Locking device of semitrailer traction seat Download PDFInfo
- Publication number
- CN115284800A CN115284800A CN202211075383.XA CN202211075383A CN115284800A CN 115284800 A CN115284800 A CN 115284800A CN 202211075383 A CN202211075383 A CN 202211075383A CN 115284800 A CN115284800 A CN 115284800A
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- CN
- China
- Prior art keywords
- lever
- wedge
- semitrailer
- pull rod
- locking device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims description 3
- 229910000746 Structural steel Inorganic materials 0.000 claims 8
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 238000003754 machining Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/14—Draw-gear or towing devices characterised by their type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/28—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for preventing unwanted disengagement, e.g. safety appliances
Abstract
The invention relates to the field of semitrailer traction seats, and provides a traction seat locking device which is convenient and safe and has small weight. The device comprises a pull rod, a limiting block, a safety lock, a lever, a thrust spring, a hook lock, an oblique iron and an oblique iron pin. The pull rod is connected with thrust spring, wedge, and the removal of control wedge, the hook lock is fixed in A point position, and can rotate along with A point, and the E point of hook lock can be in collision with the F point of lever during the rotation, and the stopper is fixed in the position that the side of pulling a casing is used for fixed pull rod, prevents that the pull rod from taking place to slide, and the lever is fixed at the internal surface B point and the C point of pulling a casing, and safety lock, wedge round pin and thrust spring are used for controlling the position of wedge. The semi-trailer traction seat can be locked by the matching arrangement of the pull rod, the wedge pin, the safety lock and the thrust spring.
Description
Technical Field
The invention relates to the field of semitrailer traction seats, in particular to a traction seat locking device which is convenient and safe and has small weight.
Background
With the continuous and healthy development of scientific technology and national economy, the road transportation business of China is greatly developed. Due to the characteristics of large transportation volume, high efficiency and economy, the semi-trailer tractor is widely applied to the transportation industry in recent years. The semi-trailer tractor has good operability and economy, and the production and design of the traction seat in China are slightly behind compared with those in developed countries in Europe and America. The traction seat is used as a connecting device between the semitrailer and the tractor, the safety of the traction seat is paid enough attention, if the operation is improper, serious traffic accidents can be caused, the locking device of the traction seat is complex and occupies a large space at present, particularly a tension spring part, the amplitude of the tension spring is greatly increased after the tension spring resonates, and therefore the spring can be accelerated to wear and fatigue fracture.
At present, the light weight of an automobile becomes a great development trend in China, the weight of a traditional traction seat is large, and the quality of the traction seat can be effectively reduced by changing a locking mechanism of the traction seat so as to achieve the purpose of light weight.
Therefore, in view of the above situation, it is urgently needed to provide a locking device for a semitrailer traction seat so as to overcome the defects in the current practical application.
Disclosure of Invention
The invention aims to solve the problems of the prior art and provides a traction seat locking device which is small in installation space, light in weight and convenient to operate.
The technical scheme of the invention is as follows:
the locking device for the semitrailer traction seat comprises a locking hook and a lever, wherein the locking hook is in running fit with the lever and used for fixing the traction pin so as to ensure the stable connection of the semitrailer and the tractor, and two supporting points are arranged on the lever and used for controlling the movement of the oblique iron pin through the limitation of the supporting points in the contact process of the locking hook and the lever.
The safety lock is characterized in that the wedge pull rod cannot be pulled out randomly, so that the safety lock is important, the locking performance and the operation of the safety lock with low thrust or low pulling force are superior to those of a cash spinning mechanism, and the safety lock is connected with a low thrust spring through a rod-shaped pin to enable the wedge to be self-locked, so that misoperation is prevented.
The wedge is connected with the pull rod and the lock hook and used for controlling the separation and locking of the lock hook and ensuring that the traction seat cannot rotate when the lock hook works.
The thrust spring is arranged between the side face of the traction seat shell and the wedge and connected with the pull rod, and the thrust spring is arranged in the sliding rod and used for elastically supporting the sliding rod.
The wedge pin is arranged between the wedge and the lever in a mode that the rod-shaped pin is connected with the small thrust spring, is connected with the lever through the floating shaft and is used for fixing the wedge during separation.
The pull rod is connected with the thrust spring and the inclined iron and is connected with the limiting block through a section of thread, and the outer end of the pull rod is provided with threads and a nut to limit the inclined iron.
Compared with the prior art, the invention has the beneficial effects that:
the wedge limiting mechanism in the prior art mainly limits the wedge depth of the wedge, the force borne by the limiting mechanism is the impact force of the wedge tension spring, the limiting form is pushing, and if the limiting form is changed into pulling, the effect is the same, therefore, a limiting bolt can be added at the outer end of the wedge tension rod, the limitation of the wedge is realized through the action of the bolt and the shell, and the limiting amount is adjusted through the bolt. The spacing ejector pin of tapered iron can be got rid of to this scheme, though alleviates ejector pin subassembly weight. The wedge locking spring is the guarantee of trailer driving safety, all parts of the vehicle are in continuous vibration in the high-speed driving process, the elastic part can generate high-frequency oscillation and resonance when subjected to continuous vibration, particularly the tension spring part, the amplitude of the tension spring is greatly increased after the tension spring resonates, and therefore the accelerated hanging point of the spring is abraded and fatigue fracture can be caused. The safety lock device is additionally arranged, and the wedge pull rod cannot be pulled out randomly, so that the safety lock is of great importance, the safety bolt locking performance and the operation of the small-thrust or small-tension safety bolt locking device are superior to those of a cash spinning mechanism, and the mechanism adopts a rod-shaped pin and a small-thrust spring to ensure that the wedge is self-locked, so that misoperation is prevented; the invention aims to solve the problems of the prior art and provides a traction seat locking device which is small in installation space, light in weight and convenient to operate.
Drawings
Fig. 1 is a schematic front view of a locked state according to an embodiment of the present invention.
Fig. 2 is a schematic view of a separated state in a front view according to an embodiment of the present invention.
The device comprises a limiting block 1, a pull rod 2, a thrust spring 3, a safety lock 4, an oblique iron pin 5, an oblique iron 6, a hook lock 7 and a lever 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
Referring to fig. 1, a locking device for a semitrailer fifth wheel according to an embodiment of the present invention includes:
the locking hook 7 and the lever 8 are in running fit with each other.
The safety lock 4 adopts a rod-shaped pin to be connected with a small thrust spring so as to lead the wedge 6 to be self-locked.
The wedge 6 is connected with the pull rod 2 and the lock hook 7 to control the separation and locking of the lock hook 7.
Thrust spring 3, thrust spring 3 sets up between traction seat casing side and wedge 6 to be connected in pull rod 2, can turn into the elasticity when the spring takes place to deform with the pulling force of outside pulling pull rod 2, can promote wedge 6 through thrust spring 3's elasticity when the locking, make wedge 6 can realize the motion on the horizontal direction, and wedge 6 and latch hook 7 mutually support, improve the stability when pulling simultaneously, thrust spring 3 sets up in the slide bar for the realization is to the elastic support of slide bar.
The wedge pin 5 is arranged between the wedge 6 and the lever 3 and clings to the wedge 6 for fixing the wedge 6 during separation.
Wherein pull rod 2 is connected with thrust spring 3, ironbar 6, and through one section threaded connection between pull rod 2 and the stopper 1, the screw thread is established to the pull rod outer end and the screw nut realizes that the ironbar is spacing.
In the embodiment of the invention, the traction base is used for connecting a semitrailer, the latch hook 7 and the wedge 6 are used for fixing a pin shaft of the semitrailer, and the traction base and the latch hook 7 adopt the prior art, the pull rod 2 can convert received transverse tension into the elastic force of the thrust spring 3, the wedge 6 transversely moves under the action of the pull rod 2 and fixes the wedge through the wedge pin 5, the wedge pin 5 can realize unidirectional support on the wedge 6, the latch hook 7 and the wedge 6 are matched with each other to ensure that the wedge pin 5 is completely fixed in the latch hook 7, and the latch hook 7 can realize a steering function under the action of the tension spring 3; the safe and stable connection can be realized through the limitation of the safety lock 4 and the limiting block 1; compared with the prior art, the embodiment of the invention is provided with the lever 8, the limiting block 1, the thrust spring 3, the safety lock 4 and the oblique iron pin 5 which are arranged in a matched manner, so that the semi-trailer traction seat can be locked without depending on the limiting ejector rod and the tension spring, the overall quality of the traction seat is reduced, and the service life of the traction seat is prolonged.
In one embodiment of the present invention, referring to fig. 1 and 2, the linkage assembly includes:
the floating shaft B is connected with the lever 8 and the wedge pin 5, and the lever 8 drives the wedge pin 5 to move upwards through the floating shaft B.
In one embodiment of the present invention, referring to fig. 1, the raising and lowering of the lever and the wedge pin can be achieved by the rotational contact of the E-end of the latch hook 7 and the F-end of the lever 8.
In one embodiment of the present invention, referring to fig. 2, in the separated state, the wedge 6 is fixed at the position of the wedge pin 5 by the action of the pull rod 2, and the latch hook 7 rotates counterclockwise by a certain angle under the action of the tension spring, so as to facilitate the connection between the wedge pin 5 and the traction seat.
In summary, the working principle of the invention is as follows: when tractor and semitrailer articulate, confirm that traction seat wedge 6 is in the pull-out state, the tractor slowly backs a car and makes trailer round pin axle get into latch hook 7, latch hook 7 rotates clockwise around A axle under the promotion of round pin axle, the E end of latch hook 7 contacts and drives lever 8 around C axle anticlockwise rotation with the F end of lever 8, lever 8 drives the wedge round pin 5 through floating axle B and moves up, release wedge 6, lock the latch hook locking under thrust spring 3's effect, safety lock 4 automatic lock that falls afterwards, peg graft pipeline between two cars again, withdraw the trailer fore-set, accomplish and articulate. When the trailer is separated from the tractor, namely the traction seat is separated from the trailer pin shaft, firstly operating bilateral jacking columns of the trailer and jacking the jacking columns and the ground firmly to separate a pipeline between the tractor and the trailer, then pulling out the safety lock 4 in the direction of an arrow, pulling the pull rod 2 outwards in the direction of the arrow to drive the wedge 6 to be pulled out, when the wedge 6 is pulled to a middle clamping position, the wedge pin 5 is locked to separate the wedge 6 from the latch hook 7, then the tractor moves forwards, the trailer pin shaft moves out and drives the latch hook to rotate anticlockwise around the shaft A, the end E of the latch hook 7 is contacted with the end F of the lever 8, at the moment, the latch hook 7 drives the lever 8 to rotate clockwise around the floating shaft B for a certain angle and then to be separated, at the moment, the wedge pin 5 keeps a locked state, the lever 8 in the actual traction seat does not work in the process of separating the tractor from the trailer, the tractor continues to move forwards, and the trailer pin shaft is completely separated from the traction seat.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a semitrailer traction seat locking means, its characterized in that, includes stopper 1, pull rod 2, thrust spring 3, safety lock 4, oblique iron round pin 5, wedge 6, coupler lock 7, lever 8: the pull rod adopts the round steel so that processing and assembly, and the lever is fixed on traction seat casing surface, and thrust spring connects casing side and sloping iron side, and the stopper welding realizes the spacing of sloping iron in the casing side and through the effect of bolt with the casing, and the screw thread is established to the pull rod outer end and the screw nut realizes that the sloping iron is spacing, and safety bar and sloping iron round pin adopt shaft-like round pin and little thrust spring to make the sloping iron auto-lock, prevent the maloperation.
2. The semitrailer fifth wheel locking device of claim 1, characterized in that the lever 8 is connected to two fulcrums, and the angle iron pin 5 is connected to the lever 8 through a small thrust spring and a fulcrum B.
3. The semitrailer traction seat locking device according to claim 1, characterized in that an internal safety lock 4 is additionally arranged in the device, and the safety lock can be manually pulled out before being separated.
4. A semitrailer fifth wheel locking device according to claim 1, characterised in that said hook lock 7 is able to interact with the lever 5 during rotation and to control the up and down movement of the angle iron pin during clockwise rotation.
5. The semitrailer fifth wheel locking device of claim 1, wherein the angle iron 6 has a sharp transition at the middle of its slope for securing the angle iron 6 to the angle iron pin 5 to achieve self-locking.
6. The semitrailer fifth wheel locking device of claim 2, characterized in that the lever 8 is connected with the angle iron pin 5 through a fulcrum B and a small thrust spring, and the angle iron pin 5 is triangular in shape and the side surfaces thereof are in contact with the angle iron 6.
7. The semitrailer traction seat locking device according to claim 1, characterized in that a thread for fixing is arranged between the limiting block 1 and the pull rod 2, and is used for fixing the position of the pull rod and adjusting the position of the wedge.
8. A semitrailer fifth wheel locking device according to claim 1, characterised in that said tie rod 2 is not parallel to lever 8 and the angle between tie rod 2 and lever 8 is less than 90 °.
9. The semitrailer fifth wheel locking device of claim 1, wherein the drawbar 2 is threaded and made of round steel for easy machining and assembly.
10. The semitrailer traction seat locking device according to claim 1, characterized in that a thrust spring 3 is adopted between the pull rod 2 and the inclined iron 6 to replace a tension spring so as to reduce wear and fatigue fracture and prolong service life.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211075383.XA CN115284800A (en) | 2022-09-02 | 2022-09-02 | Locking device of semitrailer traction seat |
| PCT/CN2023/101193 WO2024045783A1 (en) | 2022-09-02 | 2023-06-20 | Locking device for semitrailer fifth wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211075383.XA CN115284800A (en) | 2022-09-02 | 2022-09-02 | Locking device of semitrailer traction seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115284800A true CN115284800A (en) | 2022-11-04 |
Family
ID=83832956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211075383.XA Pending CN115284800A (en) | 2022-09-02 | 2022-09-02 | Locking device of semitrailer traction seat |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115284800A (en) |
| WO (1) | WO2024045783A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045783A1 (en) * | 2022-09-02 | 2024-03-07 | 华北理工大学 | Locking device for semitrailer fifth wheel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349098Y (en) * | 1998-12-22 | 1999-11-17 | 镇江市宝华半挂车配件有限公司 | Semi-trailer type tractive unit |
| US7669878B1 (en) * | 2007-11-30 | 2010-03-02 | Williams Innovations, Llc | Quick release hitch assembly |
| CN201172436Y (en) * | 2008-02-22 | 2008-12-31 | 镇江市宝华半挂车配件有限公司 | Quick disconnecting butt-joint traction base |
| CN105172918B (en) * | 2015-04-20 | 2017-08-25 | 吉林大学 | A kind of traction base of semitrailer |
| CN105365508A (en) * | 2015-12-16 | 2016-03-02 | 宁波金洋化工物流有限公司 | Trailer towing mechanism |
| CN216886965U (en) * | 2022-04-13 | 2022-07-05 | 梁山三星机械有限公司 | Anti-drop traction seat |
| CN115284800A (en) * | 2022-09-02 | 2022-11-04 | 华北理工大学 | Locking device of semitrailer traction seat |
-
2022
- 2022-09-02 CN CN202211075383.XA patent/CN115284800A/en active Pending
-
2023
- 2023-06-20 WO PCT/CN2023/101193 patent/WO2024045783A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024045783A1 (en) * | 2022-09-02 | 2024-03-07 | 华北理工大学 | Locking device for semitrailer fifth wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024045783A1 (en) | 2024-03-07 |
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