CN110282033A - Heavy-duty vehicle driver's cab turnover supporting mechanism - Google Patents
Heavy-duty vehicle driver's cab turnover supporting mechanism Download PDFInfo
- Publication number
- CN110282033A CN110282033A CN201910681654.8A CN201910681654A CN110282033A CN 110282033 A CN110282033 A CN 110282033A CN 201910681654 A CN201910681654 A CN 201910681654A CN 110282033 A CN110282033 A CN 110282033A
- Authority
- CN
- China
- Prior art keywords
- driver
- cabin
- support bar
- supporting mechanism
- hydraulic stem
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 33
- 230000007306 turnover Effects 0.000 title claims abstract description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000008602 contraction Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 230000006872 improvement Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The present invention provides heavy-duty vehicle driver's cab turnover supporting mechanism, the supporting mechanism is arranged between driver's cabin and stringer, and the supporting mechanism includes: pedestal, hydraulic stem, first support bar and second support bar;The pedestal is fixed at stringer and is provided with telescopic cavity in driver's cabin side, the pedestal, is provided with limit hole on the upside of the pedestal;The hydraulic stem is arranged in telescopic cavity, and flexible to driver's cabin front along the direction of stringer;The hydraulic stem includes: often to go out portion, pars contractilis and fixed part, and described often portion is arranged in outside fixed part always out;The first support bar uses stretching structure;Described first support bar one end and normal portion out are hinged far from pars contractilis one end, and the other end and driver's cabin are hinged along direction of advance side;Described second support bar one end passes through limit hole and often portion is hinged close to pars contractilis one end out, and the other end and driver's cabin bottom side are hinged.
Description
Technical field
The present invention relates to automobile technical field more particularly to heavy-duty vehicle driver's cab turnover supporting mechanisms.
Background technique
The driver's cabin of China's truck is usually forward type design, and the driver's cabin weight of truck generally all compares
Greatly, so the turning lifting of driver's cabin is all made of hydraulic turning lifting system to complete, hydraulic cab turning lifting system is
With hydraulic for power, by the flexible of hydraulic cylinder, make the rotation that driver's cabin is limited around torsion shaft, to complete the act of driver's cabin
It rises and falls;Safety during vehicle maintenance can be improved using this system, keep the maintenance process of automobile more convenient, work
It is more efficient, but hydraulic turning lifting system failure rate is relatively high, support device of the driver's cabin in switching process seems outstanding
For necessity.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides heavy-duty vehicle driver's cab turnover supporting mechanisms.
The present invention is realized by following technological means solves above-mentioned technical problem:
Heavy-duty vehicle driver's cab turnover supporting mechanism, the supporting mechanism are arranged between driver's cabin and stringer, the branch
Support mechanism includes: pedestal, hydraulic stem, first support bar and second support bar;The pedestal is fixed at stringer close to driving
Room side is sailed, telescopic cavity is provided in the pedestal, is provided with limit hole on the upside of the pedestal;The hydraulic stem setting is flexible
It is intracavitary and flexible to driver's cabin front along the direction of stringer;The hydraulic stem includes: often to go out portion, pars contractilis and fixed part, institute
It states normal portion out to be arranged in outside fixed part always, the pars contractilis is extend out to outside fixed part with the elongation of hydraulic stem, with hydraulic stem
It shrinks and is retracted in fixed part;The first support bar uses stretching structure;Described first support bar one end is remote with portion is often gone out
Hinged from pars contractilis one end, the other end and driver's cabin are hinged along direction of advance side, and the first support bar is used to support driving
Room prevents from toppling in its forward vehicle direction of advance;Described second support bar one end passes through limit hole and often goes out portion close to pars contractilis
One end is hinged, and the other end and driver's cabin bottom side are hinged;The second support bar, which is used to support driver's cabin, prevents it from toppling over backward.
As an improvement of the above technical solution, the supporting mechanism is provided with two groups, is separately positioned on cab bottom
Two sides.
As an improvement of the above technical solution, the normal portion out is fixedly installed limited block close to pars contractilis one end, described
Limited block passes through limit hole and second support bar is hinged.
As an improvement of the above technical solution, length of the limit hole in vehicle forward direction is equal to driver's cab turnover
The elongated distance of hydraulic stem during in place.
As an improvement of the above technical solution, the cab bottom setting is fluted, and connection is provided in the groove
Block, the link block are connect with groove by spring, and the second support bar is connect with link block.
The present invention has the advantages that setting hydraulic stem drives first support bar and second support bar to play support to driver's cabin
Effect, prevents it from dumping forward in operation or toppling over backward, causes casualties and vehicle damage;Simultaneously first support bar with
Second support bar can assist the turnover mechanism of vehicle, and power-assisted is provided when overturning to driver's cabin;First support bar and the
Two support rods match and can support driver's cabin and do not topple over, and a certain support rod when something goes wrong, another support rod
It still is able to support or hold driver's cabin, prevents it from toppling over.
Detailed description of the invention
Fig. 1 is structural schematic diagram when supporting mechanism described in the embodiment of the present invention does not work;
Structural schematic diagram when Fig. 2 is the work of supporting mechanism described in the embodiment of the present invention;
Fig. 3 is the partial enlargement structural representation of a-quadrant in Fig. 1;
Fig. 4 for institute of embodiment of the present invention supporting mechanism structural schematic diagram.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.
Embodiment
As shown in Figure 1, heavy-duty vehicle driver's cab turnover supporting mechanism described in the present embodiment, the supporting mechanism setting is being driven
It sails between room 10 and stringer 20, the supporting mechanism includes: pedestal 30, hydraulic stem, first support bar 50 and second support bar
60;The pedestal 30 is fixed at stringer 20 and is provided with telescopic cavity 31 in 10 side of driver's cabin, the pedestal 30, described
Limit hole 32 is provided on the upside of pedestal 30;The hydraulic stem is arranged in telescopic cavity 31, and along the direction of stringer 20 to driver's cabin
10 fronts are flexible;The hydraulic stem includes: often to go out portion 41, pars contractilis 42 and fixed part 43, and described often portion 41 is arranged always out
Outside fixed part 43, the pars contractilis 42 is extend out to outside fixed part 43 with the elongation of hydraulic stem, is retracted with contraction of hydraulic pressure bar
To fixed part 43;The first support bar 50 uses stretching structure;Described 50 one end of first support bar and normal portion 41 out are separate
42 one end of pars contractilis is hinged, and the other end is hinged along direction of advance side with driver's cabin 10, and the first support bar 50 is used to support
Driver's cabin 10 prevents from toppling in its forward vehicle direction of advance;Described 60 one end of second support bar passes through limit hole 32 and often goes out portion
41 is hinged close to 42 one end of pars contractilis, and the other end and 10 bottom side of driver's cabin are hinged;The second support bar 60 is used to support driving
Room 10 prevents it from toppling over backward.
In the work of vehicle turnover mechanism, driver's cabin 10 is started turning, while opening supporting mechanism, by hydraulic stem to vehicle
Forward direction motion drives first support bar 50 to play a supporting role with second support bar 60 to driver's cabin 10, prevent its
It dumps forward when operation or topples over backward, cause casualties and vehicle damage;First support bar 50 and second support bar simultaneously
60 can assist the turnover mechanism of vehicle, provide power when overturning to driver's cabin 10, because overturn in driver's cabin 10
Early period, torque is maximum, and turnover mechanism needs very big power that could rotate driver's cabin 10, and at this time hydraulic stem drives first
Strut 50 and second support bar 60 can play the role of assisting overturning well;First support bar 50 and 60 phase of second support bar
Cooperation can support driver's cabin 10 and not topple over, and a certain support rod when something goes wrong, another support rod still is able to prop up
Driver's cabin 10 is propped up or held, prevents it from toppling over.
As shown in figure 4, the supporting mechanism is provided with two groups, it is separately positioned on the two sides of 10 bottom of driver's cabin;Two groups of branch
Support mechanism can be supported 10 two sides of driver's cabin, guarantee stress equalization, prevent long-time discontinuity from leading to driver's cabin
10 deformations;Simultaneously two groups of supporting mechanisms can wherein one group still be able to work when something goes wrong, improve safety.
As shown in Figure 1 and Figure 2, the normal portion 41 out is fixedly installed limited block 44, the limit close to 42 one end of pars contractilis
Block 44 passes through limit hole 32 and second support bar 60 is hinged;Hydraulic stem excess shrinkage is prevented, hydraulic stem is damaged.
Length of the limit hole 32 in vehicle forward direction is equal to hydraulic stem 30 during driver's cabin 10 is overturn in place
Elongated distance prevent hydraulic stem from excessively extending, cause 50 support degree of first support bar to decline, and hydraulic stem can be protected not
It can be damaged because excessively extending.
As shown in figure 3,10 bottom of driver's cabin is arranged fluted 11, it is provided with link block 12 in the groove, it is described
Link block 11 is connect with groove 11 by spring, and the second support bar 60 is connect with link block 11;So that second support bar 60
It is elastic connection between driver's cabin 10, avoids driver's cabin 10 and second support bar 60 in 10 switching process of driver's cabin vibrated
Greatly, unnecessary damage is caused to driver's cabin 10 and second support bar 60.
It should be noted that, in this document, such as first and second or the like relational terms are used merely to one if it exists
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments
Invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features;And these modification or
Replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. heavy-duty vehicle driver's cab turnover supporting mechanism, it is characterised in that: the supporting mechanism setting is driver's cabin (10) and vertical
Between beam (20), the supporting mechanism includes: pedestal (30), hydraulic stem, first support bar (50) and second support bar (60);
The pedestal (30) is fixed at stringer (20) and is provided with telescopic cavity in driver's cabin (10) side, the pedestal (30)
(31), limit hole (32) are provided on the upside of the pedestal (30);The hydraulic stem setting is interior in telescopic cavity (31), and along stringer
(20) direction is flexible to driver's cabin (10) front;The hydraulic stem includes: often to go out portion (41), pars contractilis (42) and fixed part
(43), described often fixed part (43) is arranged in always outside in portion (41) out, and the pars contractilis (42) is stretched out with the elongation of hydraulic stem
Outside to fixed part (43), it is retracted to contraction of hydraulic pressure bar in fixed part (43);The first support bar (50) is using flexible knot
Structure;Described first support bar (50) one end and normal portion (41) out separate pars contractilis (42) one end are hinged, the other end and driver's cabin
(10) hinged along direction of advance side, the first support bar (50), which is used to support driver's cabin (10), prevents its forward vehicle from advancing
Topple on direction;Described second support bar (60) one end passes through limit hole (32) and often goes out portion (41) close to pars contractilis (42) one end
Hingedly, the other end and driver's cabin (10) bottom side are hinged;The second support bar (60) be used to support driver's cabin (10) prevent its to
After topple over.
2. heavy-duty vehicle driver's cab turnover supporting mechanism according to claim 1, it is characterised in that: the supporting mechanism is set
Two groups are equipped with, the two sides of driver's cabin (10) bottom are separately positioned on.
3. heavy-duty vehicle driver's cab turnover supporting mechanism according to claim 1 or 2, it is characterised in that: described often to go out portion
(41) it is fixedly installed limited block (44) close to pars contractilis (42) one end, the limited block (44) passes through limit hole (32) and second
Support rod (60) is hinged.
4. heavy-duty vehicle driver's cab turnover supporting mechanism according to claim 3, it is characterised in that: the limit hole (32)
Length in vehicle forward direction is equal to the elongated distance of hydraulic stem (30) during driver's cabin (10) are overturn in place.
5. heavy-duty vehicle driver's cab turnover supporting mechanism according to claim 4, it is characterised in that: the driver's cabin (10)
Fluted (11) are arranged in bottom, are provided with link block (12) in the groove, and the link block (11) and groove (11) pass through bullet
Spring connection, the second support bar (60) connect with link block (11).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910681654.8A CN110282033B (en) | 2019-07-26 | 2019-07-26 | Heavy-duty vehicle cab overturning supporting mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910681654.8A CN110282033B (en) | 2019-07-26 | 2019-07-26 | Heavy-duty vehicle cab overturning supporting mechanism |
Publications (2)
Publication Number | Publication Date |
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CN110282033A true CN110282033A (en) | 2019-09-27 |
CN110282033B CN110282033B (en) | 2024-08-23 |
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ID=68022576
Family Applications (1)
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CN201910681654.8A Active CN110282033B (en) | 2019-07-26 | 2019-07-26 | Heavy-duty vehicle cab overturning supporting mechanism |
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Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4121206A1 (en) * | 1991-06-27 | 1993-01-14 | Iveco Magirus | ARRANGEMENT FOR TILTING A SPRING COMMERCIAL CAB |
JPH0577619A (en) * | 1991-09-18 | 1993-03-30 | Yanmar Agricult Equip Co Ltd | Working vehicle for running on sloped place |
JPH05213126A (en) * | 1992-02-07 | 1993-08-24 | Hino Motors Ltd | Front grill guard |
JPH06219338A (en) * | 1993-01-21 | 1994-08-09 | Isuzu Motors Ltd | Active type suspension device for carburetor |
JPH09249382A (en) * | 1996-03-14 | 1997-09-22 | Komatsu Ltd | Driver's cab travelling device for self-running type crane |
EP0943532A2 (en) * | 1998-03-18 | 1999-09-22 | Hino Jidosha Kogyo Kabushiki Kaisha | Cab suspension structure |
JP2002220854A (en) * | 2001-01-26 | 2002-08-09 | Shin Caterpillar Mitsubishi Ltd | Driver's cab lifting device of construction machine |
JP2007290798A (en) * | 2006-04-21 | 2007-11-08 | Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd | Construction machinery |
JP2008002178A (en) * | 2006-06-23 | 2008-01-10 | Hitachi Constr Mach Co Ltd | Work machine having movable cab |
US20080302592A1 (en) * | 2006-01-17 | 2008-12-11 | Cpac Systems Ab | Connection Assembly for a Truck |
US20110057478A1 (en) * | 2007-11-27 | 2011-03-10 | Van Der Knaap Albertus Clemens Maria | Suspension assembly for suspending a cabin of a truck or the like vehicle |
CN103556663A (en) * | 2013-11-05 | 2014-02-05 | 上海三一重机有限公司 | Cab overturning mechanism for earthmover and cab comprising overturning mechanism |
CN106428254A (en) * | 2016-11-03 | 2017-02-22 | 雷沃重工股份有限公司 | Cab having overturning function |
CN206417090U (en) * | 2017-01-24 | 2017-08-18 | 扬州凯勒机械有限公司 | Earth boring machine driver's cabin |
JP2017218063A (en) * | 2016-06-09 | 2017-12-14 | いすゞ自動車株式会社 | vehicle |
JP2018016229A (en) * | 2016-07-29 | 2018-02-01 | 日野自動車株式会社 | Cab connection structure |
CN207972680U (en) * | 2018-01-03 | 2018-10-16 | 湖北天腾重型机械股份有限公司 | Scaling jumbo driver's cabin pitches mechanism |
CN108725605A (en) * | 2018-07-20 | 2018-11-02 | 河南垣发专用车辆集团有限公司 | A kind of forklift tilt cab |
CN210882365U (en) * | 2019-07-26 | 2020-06-30 | 安徽安凯华夏汽车配件制造有限公司 | Turnover supporting mechanism for heavy-duty vehicle cab |
-
2019
- 2019-07-26 CN CN201910681654.8A patent/CN110282033B/en active Active
Patent Citations (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4121206A1 (en) * | 1991-06-27 | 1993-01-14 | Iveco Magirus | ARRANGEMENT FOR TILTING A SPRING COMMERCIAL CAB |
JPH0577619A (en) * | 1991-09-18 | 1993-03-30 | Yanmar Agricult Equip Co Ltd | Working vehicle for running on sloped place |
JPH05213126A (en) * | 1992-02-07 | 1993-08-24 | Hino Motors Ltd | Front grill guard |
JPH06219338A (en) * | 1993-01-21 | 1994-08-09 | Isuzu Motors Ltd | Active type suspension device for carburetor |
JPH09249382A (en) * | 1996-03-14 | 1997-09-22 | Komatsu Ltd | Driver's cab travelling device for self-running type crane |
EP0943532A2 (en) * | 1998-03-18 | 1999-09-22 | Hino Jidosha Kogyo Kabushiki Kaisha | Cab suspension structure |
JP2002220854A (en) * | 2001-01-26 | 2002-08-09 | Shin Caterpillar Mitsubishi Ltd | Driver's cab lifting device of construction machine |
US20080302592A1 (en) * | 2006-01-17 | 2008-12-11 | Cpac Systems Ab | Connection Assembly for a Truck |
JP2007290798A (en) * | 2006-04-21 | 2007-11-08 | Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd | Construction machinery |
JP2008002178A (en) * | 2006-06-23 | 2008-01-10 | Hitachi Constr Mach Co Ltd | Work machine having movable cab |
US20110057478A1 (en) * | 2007-11-27 | 2011-03-10 | Van Der Knaap Albertus Clemens Maria | Suspension assembly for suspending a cabin of a truck or the like vehicle |
CN103556663A (en) * | 2013-11-05 | 2014-02-05 | 上海三一重机有限公司 | Cab overturning mechanism for earthmover and cab comprising overturning mechanism |
JP2017218063A (en) * | 2016-06-09 | 2017-12-14 | いすゞ自動車株式会社 | vehicle |
JP2018016229A (en) * | 2016-07-29 | 2018-02-01 | 日野自動車株式会社 | Cab connection structure |
CN106428254A (en) * | 2016-11-03 | 2017-02-22 | 雷沃重工股份有限公司 | Cab having overturning function |
CN206417090U (en) * | 2017-01-24 | 2017-08-18 | 扬州凯勒机械有限公司 | Earth boring machine driver's cabin |
CN207972680U (en) * | 2018-01-03 | 2018-10-16 | 湖北天腾重型机械股份有限公司 | Scaling jumbo driver's cabin pitches mechanism |
CN108725605A (en) * | 2018-07-20 | 2018-11-02 | 河南垣发专用车辆集团有限公司 | A kind of forklift tilt cab |
CN210882365U (en) * | 2019-07-26 | 2020-06-30 | 安徽安凯华夏汽车配件制造有限公司 | Turnover supporting mechanism for heavy-duty vehicle cab |
Also Published As
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