CN112208655A - Dumper rollover protection structure and cab ROPS framework - Google Patents
Dumper rollover protection structure and cab ROPS framework Download PDFInfo
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- CN112208655A CN112208655A CN202011147577.7A CN202011147577A CN112208655A CN 112208655 A CN112208655 A CN 112208655A CN 202011147577 A CN202011147577 A CN 202011147577A CN 112208655 A CN112208655 A CN 112208655A
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- column
- mounting seat
- cab
- limiting
- rops
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/04—Door pillars ; windshield pillars
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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
- B62D33/077—Superstructures for load-carrying vehicles characterised by the connection of the superstructure to the vehicle frame
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a dumper rollover protection structure and a cab ROPS framework, which comprise an upper mounting seat, a limiting structure, a lower mounting seat, a rear connecting beam and a cab ROPS framework, wherein the cab ROPS framework consists of a bearing component consisting of a top bearing beam, a C column, a D column and a bottom bearing beam, and a functional component consisting of a top C-shaped frame, a B column and a bottom C-shaped frame; the bottom ends of the C column and the D column are fixed on the upper mounting seat, and the C column, the D column and the upper mounting seat form a triangular structure; a lower mounting seat is fixed at a corresponding position on the upper surface of the rear connecting beam; limiting structures for limiting the cab to horizontally rotate relative to the frame are arranged at corresponding positions of the upper mounting seat and the lower mounting seat; the ROPS framework of the cab is fixed with the upper mounting seat, the rear connecting beam is fixed with the lower mounting seat, and the ROPS framework is positioned and mounted through the limiting structure and fastened through the fixing bolt.
Description
Technical Field
The invention belongs to the technical field of engineering machinery, and particularly relates to a rolling protection structure of a dumper and a ROPS framework of a cab.
Background
The cab of the engineering machinery (large-scale mining dump truck) mostly takes profile steel as a framework, and is a common roll-over protection structure (ROPS). ROPS should have sufficient strength and stiffness to ensure that it does not break (strength requirement) or deform too much (deflection requirement) under continuous lateral, longitudinal and vertical loads to protect the vehicle driver from intrusion; and must have a certain deformation energy-absorbing capacity (energy-absorbing requirement) to reduce the impact on the driver.
Meanwhile, the working environment of the engineering machinery product is severe, and the rollover accident rate is higher than that of other vehicles. Therefore, on the premise of ensuring the ROPS rigidity and strength of the cab, the visual field of the driver is increased, so that the rollover accidents can be relatively reduced, and the safety of personnel in the vehicle can be ensured.
At present, in the field of super-tonnage mining dump trucks, in order to ensure that a cab has enough strength, the existing cab ROPS main frame is mostly of an 8-column structure, a structural diagram is shown in FIG. 8, the cab ROPS main frame is of a fully-closed frame structure, and at least 6 main bearing columns are respectively A, B, D columns or A, C, D columns; as shown in fig. 9, the cab ROPS01 is fixedly attached to the vehicle body frame 04 by 4 pairs of mounting seats, the front connecting frame 03, and the rear connecting cross member 02.
According to relevant national and international standards (GB/T17922-. Therefore, when the cab is designed and manufactured, a section steel pipe or a special-shaped steel pipe with large section size and thick pipe wall is usually selected as a main framework (comprising a stand column) of the cab; because of the high requirement of the side load, in order to ensure that the ROPS of the cab can pass the safety certification, a shock absorber is not usually arranged between the cab and the frame of the super-tonnage mining car, and a plurality of bolts with M30 or even higher specification are used for directly fastening.
The prior art has the following defects: (1) in the prior art, the column A is used as a force transmission path, and all parts (such as a front connecting frame) on the force transmission path are optimized and reinforced to ensure enough rigidity of a cab, so that the design period is increased, and the weight of a product is reduced;
(2) in the anti-rolling safety certification test, the lower end of the upright column is often subjected to early yielding, so that the overall strength of a cab is reduced, and the requirement of the anti-rolling standard cannot be met, at the moment, a steel pipe with a larger size and a thicker pipe wall needs to be selected for the upright column, and the front and side front vision of a driver is limited by the excessively thick A column and B column, so that potential safety hazards are caused;
(3) the huge lateral load can cause the fastening bolt of the cab-frame to be in the severe working condition of the stretch bending shear combination, and the bolt fracture phenomenon is easy to occur.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a dumper rollover protection structure and a cab ROPS framework which are suitable for large-tonnage engineering machinery products.
(1) A novel semi-closed bearing framework structure is designed for the ROPS of the cab of the super-tonnage mine car, the traditional stress form is changed, and the anti-rolling safety performance of the cab is improved;
(2) the column A of a conventional cab is cancelled under the condition of ensuring the bearing capacity, the bearing distribution of the column B is weakened, the section size of the column B is reduced, and the blind area of the visual field of a driver is reduced;
(3) a novel cab-frame connecting device is designed, so that the fastening bolt is prevented from being sheared, and the problem of bolt fracture is solved.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a cab ROPS framework comprises a top bearing beam, a C column, a D column, a bottom bearing beam, a top C-shaped frame, a B column and a bottom C-shaped frame, wherein a bearing component is composed of the top bearing beam, the C column, the D column and the bottom bearing beam, and a functional component is composed of the top C-shaped frame, the B column and the bottom C-shaped frame;
the ROPS framework of the cab takes a C column and a D column as bearing upright columns, and a top bearing beam and a bottom bearing beam are both of square frame structures and are horizontally arranged; the C column is vertically arranged, the top end of the C column is connected with the bottom of the outer corner of the top bearing beam, and the bottom of the C column is connected with the inner corner of the bottom bearing beam; the D column is obliquely arranged, the top end of the D column is connected with the bottom of the outer corner of the top bearing beam (fixed with the top end of the C column), and the bottom of the D column is connected with the outer corner of the bottom bearing beam; the C column, the D column and the cross beam of the bottom bearing beam form a triangular structure;
the bottom bearing beam extends horizontally inwards to be connected with a bottom C-shaped frame, and the top bearing beam extends horizontally inwards to be connected with a top C-shaped frame; the B column is vertically arranged, the top end of the B column is connected to the inner corner of the top bearing beam, and the bottom end of the B column is connected to the bottom C-shaped frame.
In some embodiments, a reinforcing structure is disposed between the top load beam and the C-pillar.
Further, the reinforcing structure is an inclined support, a reinforcing rib or a reinforcing plate.
In some embodiments, the B-pillar is a straight square steel pipe, a bent square steel pipe, or a straight special-shaped steel pipe, a bent special-shaped steel pipe.
On the other hand, the rolling protection structure of the dump truck is also provided, and comprises an upper mounting seat, a limiting structure, a lower mounting seat, a rear connecting beam and the cab ROPS framework;
the bottom ends of the C column and the D column are fixed on the upper mounting seat, and the C column, the D column and the upper mounting seat form a triangular structure;
a lower mounting seat is fixed at a corresponding position on the upper surface of the rear connecting cross beam;
the upper mounting seat and the lower mounting seat are provided with limiting structures used for limiting the cab to horizontally rotate relative to the frame and bolt holes used for mounting fixing bolts at corresponding positions;
the ROPS framework of the cab is fixed with the upper mounting seat, the rear connecting beam is fixed with the lower mounting seat, and the ROPS framework is positioned and mounted through the limiting structure and fastened through the fixing bolt.
In some embodiments, the cab ROPS frame is welded to the upper mount and the rear connecting beam is welded to the lower mount.
In some embodiments, the limiting structure adopts a limiting pin shaft, pin shaft holes for installing the limiting pin shaft are arranged at corresponding positions of the upper installation seat and the lower installation seat, and the limiting pin shaft is used for positioning and installing.
In other embodiments, the limiting structure adopts a limiting baffle or a limiting boss, the limiting baffle or the limiting boss is arranged on one of the upper mounting seat and the lower mounting seat, and the corresponding position on the other of the upper mounting seat and the lower mounting seat is matched with the limiting baffle or the limiting boss to form the limiting structure for limiting the horizontal rotation of the cab relative to the frame.
In some embodiments, the fixing bolt is a bolt group.
The ROPS framework of the cab is connected with the frame through a rear connecting beam.
Has the advantages that: the dump truck roll-over protection structure provided by the invention has the following advantages:
(1) the cab ROPS framework takes the C column and the D column as main bearing upright columns, the C column, the D column and the upper mounting seat form a triangular structure in an enclosing mode, meanwhile, an inclined support is additionally arranged at the welding position of the top bearing beam and the C column, and the safety performance of the ROPS structure is improved;
(2) the ROPS framework of the cab cancels the A column of the traditional cab, weakens the bearing distribution of the B column, and obviously reduces the section size of the B column, thereby improving the visual field range of drivers;
(3) the novel cab-frame connecting device cancels a front connecting frame, realizes the weight reduction of the whole vehicle and simplifies the production flow;
(4) the upper and lower mounting seats on both sides of the cab are respectively provided with a limiting structure (a limiting pin shaft hole is matched with a limiting pin shaft, or a limiting baffle plate or a limiting boss) which can limit the horizontal movement of the cab relative to the frame, and can protect the fastening bolt from being sheared and damaged under the action of lateral load or longitudinal load, thereby reducing the number of bolts.
Drawings
FIGS. 1 to 4 are structural diagrams of an embodiment of the present invention;
FIG. 5 is a structural view of a connection form between the embodiment of the present invention and a vehicle frame;
FIG. 6 is a block diagram of a ROPS frame of a cab according to an embodiment of the present invention;
FIG. 7 is a schematic view of another limiting structure according to an embodiment of the present invention;
FIG. 8 is a prior art structural diagram of a cab ROPS frame;
FIG. 9 is a prior art connection to a vehicle frame;
in the figure: cab ROPS frame 1: the structure comprises a top bearing beam 11, an inclined support 12, a C column 13, a D column 14, a bottom bearing beam 15, a top C-shaped frame 16, a B column 17, a bottom C-shaped frame 18, a bolt group 2, an upper mounting seat 3, a limiting pin shaft 4, a lower mounting seat 5 and a rear connecting cross beam 6.
Detailed Description
The present invention will be further described with reference to the following examples.
Example 1
As shown in fig. 6, a cab ROPS framework 1 comprises a top carrier beam 11, a C column 13, a D column 14, a bottom carrier beam 15, a top C-shaped frame 16, a B column 17, and a bottom C-shaped frame 18, wherein a carrier member is composed of the top carrier beam 11, the C column 13, the D column 14, and the bottom carrier beam 15, and a functional member is composed of the top C-shaped frame 16, the B column 17, and the bottom C-shaped frame 18;
the cab ROPS framework 1 takes a C column and a D column as bearing upright columns, and the top bearing beam 11 and the bottom bearing beam 15 are both of square frame structures and are horizontally arranged; the C column 13 is vertically arranged, the top end of the C column is connected with the bottom of the outer corner of the top bearing beam 11, and the bottom of the C column is connected with the inner corner of the bottom bearing beam 15; the D column is obliquely arranged, the top end of the D column is connected with the bottom of the outer corner of the top bearing beam 11 (fixed with the top end of the C column 13), and the bottom of the D column is connected with the outer corner of the bottom bearing beam 15; the C column, the D column and the cross beam of the bottom bearing beam 15 are enclosed into a triangular structure;
the bottom bearing beam 15 extends horizontally inwards to be connected with a bottom C-shaped frame 18, and the top bearing beam 11 extends horizontally inwards to be connected with a top C-shaped frame 16; the B-pillar 17 is vertically disposed, and has a top end connected to an inner corner of the top carrier beam 11 and a bottom end connected to the bottom C-shaped frame 18.
In some embodiments, a reinforcing structure is provided between the top load beam 11 and the C-pillar 13. Further, the reinforcing structure is a diagonal support 12, a reinforcing rib or a reinforcing plate.
In some embodiments, the B-pillar is a straight square steel pipe, a bent square steel pipe, or a straight special-shaped steel pipe, a bent special-shaped steel pipe.
Example 2
A dumper rollover protection structure comprises an upper mounting seat 3, a limiting structure, a lower mounting seat 5, a rear connecting beam 6 and a cab ROPS framework 1;
the bottom ends of the C column and the D column are fixed on the upper mounting base 3, and the C column, the D column and the upper mounting base are enclosed into a triangular structure;
a lower mounting seat 5 is fixed at a corresponding position on the upper surface of the rear connecting cross beam 6;
the corresponding positions of the upper mounting seat 3 and the lower mounting seat 5 are respectively provided with a limiting structure for limiting the horizontal rotation of the cab relative to the frame and a bolt hole for mounting a fixing bolt;
The cab ROPS framework 1 is connected with a frame through a rear connecting beam 6.
In some embodiments, as shown in fig. 1, the limiting structure employs a limiting pin 4, pin holes for installing the limiting pin 4 are provided at corresponding positions of the upper mounting seat 3 and the lower mounting seat 5, and the limiting pin 4 is used for positioning and installing.
In other embodiments, the limiting structure is a limiting baffle or a limiting boss, the limiting baffle or the limiting boss is arranged on one of the upper mounting seat 3 and the lower mounting seat 5, and the corresponding position on the other of the upper mounting seat 3 and the lower mounting seat 5 is matched with the limiting baffle or the limiting boss to form the limiting structure for limiting the horizontal rotation of the cab relative to the frame. Fig. 7 shows an alternative solution, which does not include a limit pin, and the mounting seat does not need to reserve a pin hole, but can still achieve the purpose of limiting the horizontal rotation of the cab relative to the frame.
In some embodiments, as shown in fig. 1 to 4, a rolling protection structure of a dump truck includes a cab ROPS framework 1, a bolt set 2, an upper mounting seat 3, a limit pin 4, a lower mounting seat 5, and a rear connecting beam 6. Cab ROPS skeleton 1 and last mount pad 3 welding together, back connecting beam 6 and lower mount pad 5 welding together, fix a position the installation through spacing round pin axle 4 to fasten through bolt group 2. The close fit of the limit pin shaft 4 and the pin shaft holes of the upper and lower mounting seats can avoid shearing damage of the bolt under severe working conditions.
Fig. 5 is a schematic connection diagram of the rollover protection structure of the dump truck and the frame in the embodiment of the present invention, and a force transmission path starting from the a column in the prior art is eliminated in the embodiment of the present invention, so that a front connection frame between the cab and the frame is eliminated.
Fig. 6 illustrates the main components of the cab ROPS frame. As shown in fig. 6, the cab ROPS frame 1 is a load-bearing member composed of a top load-bearing beam 11, an inclined strut 12, a C-pillar 13, a D-pillar 14, and a bottom load-bearing beam 15, and a functional member composed of a top C-shaped frame 16, a B-pillar 17, and a bottom C-shaped frame 18. The functional components provide mounting locations for windshields, doors, floors, consoles, and the like. The load-bearing member provides the cab ROPS with anti-rollover performance meeting the standard requirements, specifically as follows:
when the cab is longitudinally loaded, the cab is forward-tilted and deformed, and the triangular structures formed by the C columns and the D columns on the left side and the right side can provide bearing capacity far larger than standard requirements;
during vertical loading, under the action of the inclined support, the load borne by the top can be effectively transferred to the C column and the D column, so that the stress form of the cab is similar to that of longitudinal loading;
when the side loading is carried out, the cab is twisted and laterally tilted to deform, the triangular structures on the left side and the right side are twisted in the opposite direction and laterally tilted in the same direction, and the whole ROPS is coordinately deformed under the connection of the top bearing beam and the bottom bearing capacity, so that sufficient bearing capacity and energy absorption can be provided.
In the embodiment of the invention, (1) the column A is not contained (the bearing framework is in a semi-closed structure), and the column C and the column D are in a triangular structure; (2) a reinforcing structure is arranged between the top bearing beam and the C column; (3) the cab ROPS and the frame are only connected together through a rear connecting beam without a front connecting structure; (4) the cab mounting seat is provided with a limiting structure which can limit the horizontal rotation of the cab relative to the frame.
The invention provides a roll-over protection structure which is suitable for an ultra-large tonnage mine truck and has wide visual field and high structural bearing capacity and a connecting device of the roll-over protection structure and a frame. A new ROPS bearing framework is designed, an A column (a semi-closed framework structure) of a conventional cab is eliminated, the section size of a B column is reduced, and a visual field blind area of a driver is greatly reduced; a novel cab-frame connecting device is designed, a front connecting frame is omitted, the weight of the whole vehicle is favorably reduced, and the problem that a fastening bolt is broken due to overlarge loading force is solved.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting of the claimed invention.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. A cab ROPS framework is characterized in that: the multifunctional bearing component comprises a top bearing beam, a C column, a D column, a bottom bearing beam, a top C-shaped frame, a B column and a bottom C-shaped frame, wherein the top bearing beam, the C column, the D column and the bottom bearing beam form a bearing component, and the top C-shaped frame, the B column and the bottom C-shaped frame form a functional component together;
the ROPS framework of the cab takes a C column and a D column as bearing upright columns, and a top bearing beam and a bottom bearing beam are both of square frame structures and are horizontally arranged; the C column is vertically arranged, the top end of the C column is connected with the bottom of the outer corner of the top bearing beam, and the bottom of the C column is connected with the inner corner of the bottom bearing beam; the D column is obliquely arranged, the top end of the D column is connected with the bottom of the outer corner of the top bearing beam, and the bottom of the D column is connected with the outer corner of the bottom bearing beam; the C column, the D column and the cross beam of the bottom bearing beam form a triangular structure;
the bottom bearing beam extends horizontally inwards to be connected with a bottom C-shaped frame, and the top bearing beam extends horizontally inwards to be connected with a top C-shaped frame; the B column is vertically arranged, the top end of the B column is connected to the inner corner of the top bearing beam, and the bottom end of the B column is connected to the bottom C-shaped frame.
2. The cab ROPS frame of claim 1, wherein: and a reinforcing structure is arranged between the top bearing beam and the C column.
3. The cab ROPS frame of claim 2, wherein: the reinforcing structure is an inclined support, a reinforcing rib or a reinforcing plate.
4. The cab ROPS frame of claim 1, wherein: the B column is a straight square steel pipe, a bent square steel pipe or a straight special-shaped steel pipe or a bent special-shaped steel pipe.
5. The utility model provides a tipper rolls and turns over protection architecture which characterized in that: the ROPS frame comprises an upper mounting seat, a limiting structure, a lower mounting seat, a rear connecting beam and the ROPS frame of the cab as claimed in any one of claims 1-4;
the bottom ends of the C column and the D column are fixed on the upper mounting seat, and the C column, the D column and the upper mounting seat form a triangular structure;
a lower mounting seat is fixed at a corresponding position on the upper surface of the rear connecting cross beam;
the upper mounting seat and the lower mounting seat are provided with limiting structures used for limiting the cab to horizontally rotate relative to the frame and bolt holes used for mounting fixing bolts at corresponding positions;
the ROPS framework of the cab is fixed with the upper mounting seat, the rear connecting beam is fixed with the lower mounting seat, and the ROPS framework is positioned and mounted through the limiting structure and fastened through the fixing bolt.
6. The dump truck roll-over protection structure according to claim 5, wherein: the cab ROPS framework is welded with the upper mounting seat, and the rear connecting beam is welded with the lower mounting seat.
7. The dump truck roll-over protection structure according to claim 5, wherein: the limiting structure adopts a limiting pin shaft, pin shaft holes for installing the limiting pin shaft are formed in the corresponding positions of the upper installation seat and the lower installation seat, and the limiting pin shaft is positioned and installed.
8. The dump truck roll-over protection structure according to claim 5, wherein: the limiting structure adopts a limiting baffle or a limiting boss, the limiting baffle or the limiting boss is arranged on one of the upper mounting seat and the lower mounting seat, and the corresponding position on the other of the upper mounting seat and the lower mounting seat is matched with the limiting baffle or the limiting boss, so that the limiting structure for limiting the cab to horizontally rotate relative to the frame is formed.
9. The dump truck roll-over protection structure according to claim 5, wherein: the fixing bolt adopts a bolt group.
10. The dump truck roll-over protection structure according to claim 5, wherein: the cab ROPS framework is connected with the frame through a rear connecting beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147577.7A CN112208655B (en) | 2020-10-23 | 2020-10-23 | Dumper rollover protection structure and cab ROPS framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011147577.7A CN112208655B (en) | 2020-10-23 | 2020-10-23 | Dumper rollover protection structure and cab ROPS framework |
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| Publication Number | Publication Date |
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| CN112208655A true CN112208655A (en) | 2021-01-12 |
| CN112208655B CN112208655B (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011147577.7A Active CN112208655B (en) | 2020-10-23 | 2020-10-23 | Dumper rollover protection structure and cab ROPS framework |
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| CN203698445U (en) * | 2013-12-31 | 2014-07-09 | 中铁十一局集团汉江重工有限公司 | Mining dump truck cab framework |
| CN107176214A (en) * | 2017-06-27 | 2017-09-19 | 徐州徐工矿山机械有限公司 | Articulated truck driver's cabin safety frame structure |
| CN208278182U (en) * | 2018-06-08 | 2018-12-25 | 威海广泰空港设备股份有限公司 | Loader cab telescopic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100290881A1 (en) * | 2007-05-26 | 2010-11-18 | Michael J Koss | Retrofitable ROPS Reinforcement Structure for Cab Raiser Interface |
| CN201291918Y (en) * | 2008-11-17 | 2009-08-19 | 湘电重型装备股份有限公司 | Roll-proof deformation steering room of electric transmission self-discharging vehicle for mining |
| CN201597652U (en) * | 2009-12-17 | 2010-10-06 | 三一重机有限公司 | Machineshop truck cab frame structure |
| CN201721527U (en) * | 2010-06-06 | 2011-01-26 | 内蒙古北方重型汽车股份有限公司 | Mine dump truck cab fixing structure |
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| CN112208655B (en) | 2022-02-01 |
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