CN111098942B - Locking mechanism, cab rear suspension locking mechanism and vehicle - Google Patents
Locking mechanism, cab rear suspension locking mechanism and vehicle Download PDFInfo
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- CN111098942B CN111098942B CN201811261622.4A CN201811261622A CN111098942B CN 111098942 B CN111098942 B CN 111098942B CN 201811261622 A CN201811261622 A CN 201811261622A CN 111098942 B CN111098942 B CN 111098942B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/067—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
- B62D33/07—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable characterised by the device for locking the cab in the tilted or in the driving position
- B62D33/071—Locking devices for cabins in driving position; Shock and vibration absorbing devices therefor
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The utility model relates to a suspension locking mechanism and vehicle behind locking mechanism, driver's cabin, locking mechanism includes lock body, connects the latch hook of connecting lock body and body to and the electromagnetic drive subassembly that is connected with the latch hook, locking mechanism has: in an unlocking state, the electromagnetic driving component is electrified and drives the lock hook to withdraw from the body or the mounting hole of the upper lock body, and the connection between the upper lock body and the body is disconnected; and in a locking state, the electromagnetic driving component is powered off, and the locking hook is driven to be inserted into the mounting hole so as to connect the upper lock body and the body. Like this, the stable connection of lock body and body can be realized to this locking mechanism that this disclosure provided under the outage state, can break off the connection of lock body and body under the on-state, can be in the fast switch over between locking state and the unblock state, and convenient operation and response are rapid, can not appear the risk of breaking off certainly because of external force interference, have reduced locking mechanism's fault rate, have improved the security of using.
Description
Technical Field
The disclosure relates to the field of suspension locking, in particular to a locking mechanism, a cab rear suspension locking mechanism and a vehicle.
Background
The locking mechanism, such as a cab rear suspension locking mechanism, is in a locking state in the driving process, can ensure stable connection between a cab and a chassis, and can be switched to an unlocking state when the cab needs to be turned over. The rear suspension locking mechanism of the related cab has two main types, one is mechanical locking, the structure is complex, and the unlocking operation process is complex; the other type is hydraulic locking, a rear suspension upper lock body is connected with a cab, a hydraulic lock is matched with the rear suspension, an oil cylinder is matched inside the hydraulic lock, a lock hook of the hydraulic lock hooks a lock pin to realize locking, and the oil cylinder drives the lock hook to move to realize unlocking. However, in the driving process, the cab and the chassis move relatively, such as tilting, leaning forward or leaning backward, the hydraulic lock and the lock pin move relatively, the hardness of the lock shell is low, the hydraulic lock is unlocked and blocked due to abrasion, cracking and the like of the lock shell, and the oil pipe joint of the hydraulic lock is prone to faults such as breakage.
Disclosure of Invention
A first object of the present disclosure is to provide a locking mechanism, which can rapidly realize switching between a locking state and an unlocking state, and has reliable connection and effectively avoids occurrence of failure.
A second object of the present disclosure is to provide a cab rear suspension lock mechanism including the lock mechanism provided by the present disclosure.
A third object of the present disclosure is to provide a vehicle including the cab rear suspension lock mechanism described above.
In order to achieve the above object, the present disclosure provides a locking mechanism, including an upper lock body, a lock hook connecting the upper lock body and the body, and an electromagnetic driving assembly connected to the lock hook, the locking mechanism having: in the unlocking state, the electromagnetic driving assembly is electrified and drives the lock hook to withdraw from the body or the mounting hole of the upper lock body, and the connection between the upper lock body and the body is disconnected; and in a locking state, the electromagnetic driving assembly is powered off and drives the lock hook to be inserted into the mounting hole so as to connect the upper lock body and the body.
Optionally, a connecting lug is formed on the upper lock body, the mounting hole is formed on the body, the electromagnetic driving assembly includes a connecting post penetrating through the connecting lug, and a first coil, a second coil, the latch hook and an elastic member which are fixed on the connecting post and respectively arranged from inside to outside along the axial direction, the rotation directions of the first coil and the second coil are opposite, in the unlocking state, the first coil and the second coil are energized, the generated electromagnetic force drives the latch hook to move outwards along the axial direction and compress the elastic member, and the latch hook is withdrawn from the mounting hole; in the locking state, the first coil and the second coil are powered off, the lock hook moves inwards along the axial direction under the action of the elastic force of the elastic piece, and the lock hook is inserted into the mounting hole.
Optionally, the first coil is fixedly connected with the connecting lug, the second coil is fixedly connected with the locking hook and fixed on the connecting column in an axially movable manner, the elastic element is fixed on the sleeve, and the sleeve is sleeved on the connecting column.
Optionally, one end of the locking hook is sleeved on the connecting column and located between the second coil and the elastic piece, and the other end of the locking hook is connected with a connecting shaft section used for being inserted into or withdrawn from the mounting hole.
Optionally, the body includes a connecting plate, and a lifting lug formed on the connecting plate, and the mounting hole is formed on the lifting lug.
Optionally, a limiting member for matching with the end shape of the locking hook is further formed on the connecting plate, and the locking hook moves axially along the limiting member.
Optionally, the number of the lock hooks and the number of the electromagnetic driving assemblies for driving the lock hooks are two, in the unlocking state, the corresponding electromagnetic driving assemblies respectively drive the two lock hooks to move back and forth, and the two lock hooks respectively withdraw from the mounting holes; in the locking state, the corresponding electromagnetic driving assembly respectively drives the two locking hooks to move oppositely, and the two locking hooks are respectively inserted into the mounting holes.
Optionally, both of said electromagnetic drive assemblies are powered on or off simultaneously.
According to a second aspect of the present disclosure, there is also provided a cab rear suspension locking mechanism, including a rear suspension for connecting a cab and a chassis, and the locking mechanism, wherein the upper lock body is connected with the cab, and the body is connected with the rear suspension.
According to a third aspect of the present disclosure, there is also provided a vehicle including the cab rear suspension lock mechanism described above.
Through above-mentioned technical scheme, the stable connection of lock body and body can be realized to the locking mechanical system that this disclosure provided under the outage state, can break off the connection of lock body and body under the on-state, can be in the locking state and the fast switch-over between the state of unblock, convenient operation and response are rapid, can not appear the risk of breaking off certainly because of external force interference, reduce locking mechanical system's fault rate, have improved the security of using.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a schematic structural view of a locked state of a locking mechanism provided in an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram illustrating an unlocked state of a locking mechanism provided by an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a locking mechanism provided in an exemplary embodiment of the present disclosure;
FIG. 4 is a cross-sectional view of a locking mechanism provided in an exemplary embodiment of the present disclosure;
fig. 5 is a schematic structural view of an upper lock body in a locking mechanism provided by an exemplary embodiment of the present disclosure;
fig. 6 is a schematic structural view of a body in a locking mechanism provided in an exemplary embodiment of the present disclosure;
FIG. 7 is a schematic structural view of the connection between the sleeve and the elastic member in the locking mechanism provided by the exemplary embodiment of the present disclosure;
fig. 8 is a schematic structural view of a latch hook in a latch mechanism provided in an exemplary embodiment of the present disclosure;
fig. 9 is a circuit diagram of a locking mechanism provided in an exemplary embodiment of the present disclosure.
Description of the reference numerals
1 lock body 2 suspension
3 body 4 latch hook
10 engaging lug 30 mounting hole
31 connecting plate 32 lifting lug
33 limiting member 40 is connected with the shaft section
50 connecting post 51 first coil
52 second coil 53 spring
54 power supply 55 casing
56 switch 6 driver's cabin
Detailed Description
The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
In the present disclosure, unless otherwise stated, the use of the terms of orientation such as "upper" and "lower" generally means defined with reference to the drawing plane of the corresponding drawings, "axial" generally means with respect to the connecting column, "inner" and "outer" mean in the axial direction of the connecting column, the end near the engaging lug is "inner" and the end far from the engaging lug is "outer", and furthermore, the terms "first" and "second" and the like used in the present disclosure are intended to distinguish one element from another element, and are not sequential or important. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.
As shown in fig. 1 to 3, the present disclosure provides a locking mechanism, which includes an upper lock body 1, a body 3, a locking hook 4 connecting the upper lock body 1 and the body 3, and an electromagnetic driving assembly connected to the locking hook 4, and the locking mechanism provided by the present disclosure has: as shown in fig. 2, in the unlocking state, the electromagnetic driving component is powered on and drives the lock hook 4 to withdraw from the mounting hole 30 of the body 3 or the upper lock body 1, and the connection between the upper lock body 1 and the body 3 is disconnected; as shown in fig. 1, in the locked state, the electromagnetic driving assembly is de-energized, and the locking hook 4 is driven to be inserted into the mounting hole 30 to connect the upper lock body 1 and the body 3. Here, it should be noted that the present disclosure includes an embodiment in which one end of the latch hook 4 is connected to the upper lock body 1, and the other end can be connected to or disconnected from the main body 3, in which an electromagnetic driving assembly may be disposed on the upper lock body 1, and the mounting hole 30 is formed on the main body 3; the present disclosure further includes an embodiment in which one end of the latch hook 4 is connected to the body 3, and the other end of the latch hook can be disconnected or connected to the upper lock body 1, in which an electromagnetic driving assembly can be disposed on the body 3, and the mounting hole 30 is formed on the upper lock body 1, both of which can achieve switching between an unlocking state and a locking state of the locking mechanism.
In addition, the locking and unlocking manner provided by the present disclosure may be applied not only to the suspension connection member, but also to other components that need to be connected and disconnected, such as a component connected to a vehicle body, and the suspension may be a rear suspension that connects the cab 6 and the chassis, which will be described later, or a powertrain suspension, such as a transmission suspension, an engine suspension, or the like. The electromagnetic driving component drives the latch hook 4 to be inserted or separated by electromagnetic force by utilizing the principle of electromagnetic induction, and the structure and the arrangement mode can be various.
Through above-mentioned technical scheme, the locking mechanism that this disclosure provided can realize the stable connection of lock body 1 and body 3 under the outage state, can break off the connection of locking body 1 and body 3 under the on-state, can switch over fast between locking state and the unlocking state, and convenient operation and response are rapid, can not appear the risk of breaking off certainly because of external force interference, reduce locking mechanism's fault rate, have improved the security of using.
The electromagnetic drive assembly may be in any suitable form. In the present disclosure, as shown in fig. 3 and 9, the upper lock body 1 is formed with a connecting lug 10, the mounting hole 30 is formed on the body 3, the electromagnetic driving assembly includes a connecting post 50 penetrating through the connecting lug 10, and a first coil 51, a second coil 52, a locking hook 4 and an elastic member 53 fixed on the connecting post 50 and respectively arranged from inside to outside along the axial direction, wherein the rotation directions of the first coil 51 and the second coil 52 are opposite, for example, the first coil 51 is a right-handed coil, the second coil 52 is a left-handed coil, in the above-mentioned unlocking state, the first coil 51 and the second coil 52 are energized, the generated electromagnetic force drives the locking hook 4 to move outwards along the axial direction and compress the elastic member 53, and the locking hook 4 is withdrawn from the mounting hole 30; in the locked state, the first coil 51 and the second coil 52 are deenergized, the locking hook 4 is moved inward in the axial direction by the elastic force of the elastic member 53, and the locking hook 4 is inserted into the mounting hole 30. Specifically, after the first coil 51 and the second coil 52 with opposite rotation directions are energized, the generated magnetic fields are opposite in polarity along the axial direction of the connecting column 50, and due to the fact that like poles repel each other, the second coil 52 overcomes the acting force of the elastic element 53, such as a spring, under the action of electromagnetic force, and drives the locking hook 4 to move outwards along the axial direction, and the locking hook 4 is pulled out of the mounting hole 30, so that unlocking is achieved; after the outage, the electromagnetic force disappears, under the effect of elastic component 53 elastic force, impresses latch hook 4 in mounting hole 30, realizes the locking, and simple structure and convenient operation switch between two states fast. In addition, in the unlocked state, since the electromagnetic force generated by the coil needs to be greater than the elastic force of the elastic member 53, the elastic member 53 can be compressed, and the number of turns of the coil can be set accordingly.
For the convenience of installation, as shown in fig. 5 to 8, the first coil 51 may be fixedly connected to the connecting lug 10, the second coil 52 may be fixedly connected to the latch hook 4 and axially movably fixed to the connecting post 50, the elastic member 53 is fixed to the sleeve 55, the sleeve 55 is sleeved on the connecting post 50, the sleeve 55 may be screwed to the connecting post 5, and a limiting ring for stopping the elastic member 53 is formed at an outer end of the sleeve 55, and in other embodiments, the sleeve 55 may be fixed to the connecting post 5 in an interference fit manner. The second coil 52 is fixed on the latch hook 4, and can directly apply electromagnetic force to the latch hook 4 to drive the latch hook 4 to move outward along the axial direction. In other embodiments, the first coil 51, the second coil 52 and the elastic element 53 of the locking hook 4 may be sequentially sleeved on the connecting column 50.
More specifically, as shown in fig. 8, one end of the latch hook 4 is fitted over the connection post 50 and located between the second coil 52 and the elastic member 53, and the other end is connected to the connection shaft section 40 for insertion or withdrawal from the mounting hole 30. Connecting shaft section 40 can be by withdrawing from or inserting in mounting hole 30, realizes going up lock body 1 and body 3's connection or disconnection, and then realizes locking or unblock, because the effort size that homopolar repulsion produced is limited, under the prerequisite of guaranteeing joint strength, connecting shaft section 40's length can not design the overlength.
As shown in fig. 6, the body 3 includes a connecting plate 31, and a lifting lug 32 formed on the connecting plate 31, and the mounting hole 30 is formed on the lifting lug 32. As shown in the drawings, the connecting plate 31 is formed in a U-shaped structure including a first connecting plate and a second connecting plate arranged in parallel, and a horizontal plate connecting the first connecting plate and the second connecting plate, and the lifting lug 32 is formed on the horizontal plate, which does not affect the connection between the body 3 and other parts, and does not affect the withdrawal or insertion of the locking hook 4 from the mounting hole 30.
Further, as shown in fig. 6, a limiting member 33 for matching with the end shape of the locking hook 4 is further formed on the connecting plate 31, the locking hook 4 moves axially along the limiting member 33, and the limiting member 33 can guide and limit the movement of the end of the locking hook 4, so as to ensure that the connecting shaft segment 40 at the end of the locking hook 4 is smoothly withdrawn from or inserted into the mounting hole 30 without causing clamping stagnation and pause.
In addition, in the present disclosure, in order to further ensure the reliability of the connection between the upper lock body 1 and the body 3, as shown in fig. 4, two lock hooks 4 and two electromagnetic driving assemblies for driving the lock hooks 4 are respectively provided, in the unlocking state, the two lock hooks 4 are respectively driven by the corresponding electromagnetic driving assemblies to move back and forth, and the two lock hooks 4 are respectively withdrawn from the mounting hole 30; in a locked state, the two lock hooks 4 are driven by the corresponding electromagnetic driving assemblies to move oppositely, and the two lock hooks 4 are inserted into the mounting holes 30 respectively. Thus, the two latch hooks 4 are sleeved on the same connecting column 50, move back to exit the mounting hole 30, move in opposite directions to be inserted into the mounting hole 30, and meanwhile, the connection reliability in a locked state is guaranteed.
According to the second aspect of the present disclosure, there is also provided a cab rear suspension locking mechanism, including a rear suspension for connecting a cab 6 and a chassis, and the locking mechanism described above, wherein the upper lock body 1 is connected to the cab 6, and the body 3 is connected to the rear suspension, in this embodiment, a power supply 54 for connecting the first wire 51 and the second coil 52 is further included, and the power supply 54 may be a vehicle power supply, so that during normal driving, the switch 56 is turned off, and the connecting shaft section 40 of the latch hook 4 is located in the mounting hole 30 by means of the elastic force of the elastic member 53, so as to lock the cab rear suspension; when the cab 6 is parked and turned over, the switch 56 is closed, the first coil 51 and the second coil 52 are electrified, the lock hook 4 is driven to move under the action of electromagnetic force, the connection is disconnected, and the unlocking of the rear suspension of the cab is realized. That is, when the cab 6 is turned over, the opening or closing function of the rear suspension can be realized, and meanwhile, a reliable locking mode can be provided in the driving process, so that the driving safety is ensured.
According to a third aspect of the present disclosure, there is also provided a vehicle, such as a truck, including the above-mentioned rear suspension lock mechanism, the vehicle having all the advantages of the above-mentioned lock mechanism and rear suspension lock mechanism, and the description thereof is omitted here for brevity.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (9)
1. A locking mechanism, characterized in that, including last lock body (1), body (3), connect go up lock body (1) and latch hook (4) of body (3), and with the electromagnetic drive subassembly that latch hook (4) are connected, locking mechanism has:
in an unlocking state, the electromagnetic driving component is electrified and drives the lock hook (4) to withdraw from the body (3) or the mounting hole (30) of the upper lock body (1), and the connection between the upper lock body (1) and the body (3) is disconnected;
in a locking state, the electromagnetic driving component is powered off and drives the lock hook (4) to be inserted into the mounting hole (30) so as to connect the upper lock body (1) and the body (3),
go up to be formed with engaging lug (10) on lock body (1), mounting hole (30) are formed in on body (3), electromagnetic drive subassembly is including passing spliced pole (50) of engaging lug (10), and install on spliced pole (50) and along the axial first coil (51), second coil (52) that set up respectively from inside to outside in proper order, latch hook (4) and elastic component (53), the direction of rotation of first coil (51) with second coil (52) is opposite,
in the unlocking state, the first coil (51) and the second coil (52) are electrified, the generated electromagnetic force drives the lock hook (4) to move outwards along the axial direction and compress the elastic piece (53), and the lock hook (4) is withdrawn from the mounting hole (30);
in the locking state, the first coil (51) and the second coil (52) are powered off, the locking hook (4) moves inwards in the axial direction under the action of the elastic force of the elastic piece (53), and the locking hook (4) is inserted into the mounting hole (30).
2. The locking mechanism according to claim 1, characterized in that the first coil (51) is fixedly connected to the connecting lug (10), the second coil (52) is fixedly connected to the locking hook (4) and axially movably fixed to the connecting post (50), the spring (53) is fixed to a sleeve (55) and the sleeve (55) is fitted over the connecting post (50).
3. The locking mechanism according to claim 1, wherein one end of the locking hook (4) is sleeved on the connecting column (50) and located between the second coil (52) and the elastic member (53), and the other end is connected with a connecting shaft section (40) for inserting or withdrawing from the mounting hole (30).
4. The lock mechanism according to claim 1, wherein the body (3) includes a connecting plate (31), and a lug (32) formed on the connecting plate (31), the mounting hole (30) being formed on the lug (32).
5. The locking mechanism according to claim 4, characterized in that the connecting plate (31) is further formed with a stopper (33) for shape-fitting with an end of the locking hook (4), the locking hook (4) moving axially along the stopper (33).
6. The locking mechanism according to any one of claims 1 to 5, characterized in that the locking hook (4) and the electromagnetic drive assembly for driving the locking hook (4) are respectively two,
in the unlocking state, the corresponding electromagnetic driving components respectively drive the two locking hooks (4) to move back and forth, and the two locking hooks (4) respectively withdraw from the mounting holes (30);
in the locking state, the corresponding electromagnetic driving components respectively drive the two locking hooks (4) to move oppositely, and the two locking hooks (4) are respectively inserted into the mounting holes (30).
7. The locking mechanism of claim 6, wherein both of said electromagnetic drive assemblies are simultaneously energized or de-energized.
8. Cab rear suspension locking mechanism, characterized by comprising a rear suspension for connecting a cab (6) and a chassis, and a locking mechanism according to any of claims 1-7, the upper lock body (1) being connected with the cab (6), the body (3) being connected with the rear suspension.
9. A vehicle characterized by comprising the rear cab suspension lock mechanism according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811261622.4A CN111098942B (en) | 2018-10-26 | 2018-10-26 | Locking mechanism, cab rear suspension locking mechanism and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811261622.4A CN111098942B (en) | 2018-10-26 | 2018-10-26 | Locking mechanism, cab rear suspension locking mechanism and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111098942A CN111098942A (en) | 2020-05-05 |
| CN111098942B true CN111098942B (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811261622.4A Active CN111098942B (en) | 2018-10-26 | 2018-10-26 | Locking mechanism, cab rear suspension locking mechanism and vehicle |
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| Country | Link |
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| CN (1) | CN111098942B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08216935A (en) * | 1995-02-10 | 1996-08-27 | Hino Motors Ltd | Cab locking device for truck |
| CN101312849A (en) * | 2005-11-24 | 2008-11-26 | Hydac电子技术有限公司 | Unlocking device |
| CN104843090A (en) * | 2014-06-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Support device of front turning type vehicle body and vehicle |
| CN207433664U (en) * | 2017-10-27 | 2018-06-01 | 安徽江淮汽车集团股份有限公司 | A kind of shock mitigation system of cab of heavy truck |
| CN108360930A (en) * | 2018-04-03 | 2018-08-03 | 丰城市达盛机车部件有限公司 | A kind of multifunction electromagnetic formula expansion brake lock |
-
2018
- 2018-10-26 CN CN201811261622.4A patent/CN111098942B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08216935A (en) * | 1995-02-10 | 1996-08-27 | Hino Motors Ltd | Cab locking device for truck |
| CN101312849A (en) * | 2005-11-24 | 2008-11-26 | Hydac电子技术有限公司 | Unlocking device |
| CN104843090A (en) * | 2014-06-19 | 2015-08-19 | 北汽福田汽车股份有限公司 | Support device of front turning type vehicle body and vehicle |
| CN207433664U (en) * | 2017-10-27 | 2018-06-01 | 安徽江淮汽车集团股份有限公司 | A kind of shock mitigation system of cab of heavy truck |
| CN108360930A (en) * | 2018-04-03 | 2018-08-03 | 丰城市达盛机车部件有限公司 | A kind of multifunction electromagnetic formula expansion brake lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111098942A (en) | 2020-05-05 |
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