CN219175359U

CN219175359U - ROPS cab structure of excavator

Info

Publication number: CN219175359U
Application number: CN202223364965.8U
Authority: CN
Inventors: 孙晓阳; 蒙小行; 胡卫东; 孙明; 刘虹
Original assignee: Lovol Heavy Industry Group Co ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-13
Anticipated expiration: 2032-12-15

Abstract

The utility model relates to the field of engineering machinery, in particular to an excavator ROPS cab structure, which comprises a cab framework positioned at the upper side of a frame, wherein the frame is provided with a silicone shock absorber, the cab framework is pressed against the silicone shock absorber and is fixedly connected with the silicone shock absorber, the frame is provided with an anti-tilting mounting seat, the bottom of the cab framework is provided with a pull rod, the pull rod penetrates through the anti-tilting mounting seat and is in sliding fit with the anti-tilting mounting seat, the lower end of the pull rod is provided with a limiting disc which is propped against the anti-tilting mounting seat when the cab framework tilts, the cab framework comprises two left and right spaced A columns positioned at the front side, two left and right spaced upper longitudinal beams positioned at the top, the A columns are fixedly connected with the corresponding upper longitudinal beams through corner connecting pieces, and also comprises two left and right spaced C columns positioned at the rear side, and the C columns are fixedly connected with the rear ends of the upper longitudinal beams.

Description

ROPS cab structure of excavator

Technical Field

The utility model relates to the field of engineering machinery, in particular to an excavator ROPS cab structure.

Background

The excavator is an engineering machine widely applied to earth construction, the front side of the excavator is provided with a bucket, the bucket is connected with the excavator through a movable arm and a bucket rod, and the movable arm oil cylinder and the bucket rod oil cylinder stretch to control the actions of excavating, loading and the like of the bucket.

Because the hydraulic excavator can support the machine body by a larger working device when the hydraulic excavator starts to tip, the hydraulic excavator is not as easy to tip as other earth moving machines. Accident data, however, indicates that hydraulic excavators require roll over protection configurations. Therefore, at the beginning of product design, the cab skeleton needs to meet the ROPS design requirement.

Because the working environment of the excavator is bad, when the excavator works, the frame of the excavator can transmit huge vibration quantity to the cab framework, so that the work of an excavator driver is very uncomfortable, and in addition, the cab framework is damaged due to the severe vibration, so that the excavator is to be improved.

Disclosure of Invention

The present utility model has been made in view of the above problems, and an object of the present utility model is to provide an excavator ROPS cab structure that has high structural strength and is capable of reducing the amount of vibration.

The utility model discloses an excavator ROPS cab structure for achieving the purpose, which comprises a cab framework positioned on the upper side of a frame, and is characterized in that: the silicon oil shock absorber is arranged on the frame, the cab framework is pressed against the silicon oil shock absorber and fixedly connected with the silicon oil shock absorber, the anti-tilting mounting seat is arranged on the frame, the pull rod is arranged at the bottom of the cab framework, the pull rod penetrates through the anti-tilting mounting seat and is in sliding fit with the anti-tilting mounting seat, and the limiting disc which is propped against the anti-tilting mounting seat when the cab framework tilts is arranged at the lower end of the pull rod.

After the structure is adopted, the silicon oil damper is arranged on the frame, the cab framework is lifted through the silicon oil damper, a tiny floating amount is arranged between the cab framework and the frame, then the cab framework is prevented from tilting and limited through the tilting prevention mounting seat and the pull rod, the limiting disc is used for reducing the vibration amount of the cab framework, when the cab framework excessively tilts, the pull rod slides along the tilting prevention mounting seat, and when the cab tilts to a limiting position, the limiting disc is propped against the lower side of the tilting prevention mounting seat to prevent the cab framework from tilting, so that the cab vibration amount is reduced, the strength of the cab framework is enhanced, and the operation comfort of a driver is improved.

With respect to the concrete structure of the cab framework, the cab framework comprises an A column positioned at the front side at two left and right intervals, an upper longitudinal beam positioned at the top at two left and right intervals, the A column and the corresponding upper longitudinal beam are fixedly connected through an angle connecting piece, the cab framework also comprises a C column positioned at the rear side at two left and right intervals, the C column is fixedly connected with the rear end of the upper longitudinal beam, the cab framework also comprises a bottom beam positioned at the bottom at two left and right intervals, the bottom beam is fixedly connected with the corresponding A column and the C column, the B column extends downwards and is fixedly connected with the bottom beam corresponding to the lower side, and a side door of the cab of the excavator is installed between the B column and the A column at the front side.

In order to strengthen the supporting structure of the A column, the A column is a hollow tube, the lower part of the A column is inserted with a reinforcing column, the reinforcing column is a solid piece, and the reinforcing column extends upwards along the A column. The reinforcement column may reinforce the lower strength of the a-pillar.

Regarding the connection structure of the upper longitudinal beam and the A column, the upper longitudinal beam is a hollow pipe, the corner connecting piece is a hollow casting or stamping part splice welding structure, or is not limited to other processing modes, and two ends of the corner connecting piece are respectively inserted into the corresponding A column and the upper longitudinal beam. The corner connecting piece is provided with a bending angle, and two ends of the corner connecting piece are firstly spliced with the A column and the upper longitudinal beam and then fixed through welding.

In order to enhance the connection strength of the front upper part of the cab framework, a reinforcing beam is fixedly arranged between the two corner connecting pieces, the reinforcing beam is a solid piece, a rib plate is arranged between the two upper longitudinal beams, and two ends of the rib plate are fixedly connected with the two upper longitudinal beams respectively.

In order to strengthen the joint strength of two upper longitudinal beams, be equipped with first strengthening rib and second strengthening rib between two upper longitudinal beams, the both ends and the two upper longitudinal beams fixed connection of first strengthening rib and second strengthening rib, first strengthening rib and second strengthening rib are located the rear of gusset, and upper longitudinal beam rear end is equipped with the square pipe with both fixed connection.

Preferably, an angle bead is arranged between the C column and the included angle of the upper longitudinal beam, and an angle bead is also arranged between the C column and the included angle of the bottom beam. The corner protector can enhance the connection strength of the two connecting pieces.

Regarding the specific structure of the corner protector, the corner protector comprises a substrate, the substrate is in a right triangle shape, an avoidance groove extending inwards is formed in the right angle included angle of the substrate, and a bent positioning plate is arranged at two right angle edges of the substrate. The two positioning plates are attached to the two reinforced connecting columns and fixedly connected with the two reinforced connecting columns.

Regarding the arrangement structure of the silicone damper, the frame is provided with four damping installation seats, the four damping installation seats are respectively positioned at four corners below the cab framework, and the silicone damper is arranged on the damping installation seats.

Regarding the connection structure of the silicone oil damper and the cab skeleton, a fixing plate is arranged at the lower part of the cab skeleton, and bolts penetrating through the fixing plate and fixedly connected with the fixing plate are arranged on the silicone oil damper.

In summary, the beneficial effects of the utility model are as follows: the silicon oil shock absorber is arranged on the frame, the cab framework is lifted through the silicon oil shock absorber, a tiny floating amount is arranged between the cab framework and the frame, then the cab framework is prevented from tilting and limited through the tilting prevention mounting seat, the pull rod and the limiting disc, the silicon oil shock absorber can reduce the vibration amount of the cab framework, when the cab framework excessively tilts, the pull rod slides along the tilting prevention mounting seat, and when the cab tilts to the limiting position, the limiting disc props against the lower side of the tilting prevention mounting seat to prevent the cab framework from tilting. The deformation root and the upper part of the A column are larger, the whole cab is twisted around the Z axis, and the deformation of the front part absorbs the energy required by the ROPS experiment; therefore, the structure is designed into an A-column special-shaped pipe (more than t 5), a left lower solid core piece, a left lower reinforcing rib, a right lower reinforcing rib, a front upper beam solid core piece, a left upper beam and a right upper beam which are connected into a casting, a cab bottom plate, a silicone oil damper, and a front 4-position anti-overturning mechanism, wherein the structure comprises a platform 2 position and a cab 2 position. This structure effectively absorbs the energy and lateral forces required for ROPS experiments.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of a cab skeleton;

FIG. 3 is a schematic view of the enlarged partial structure of the point A in FIG. 2;

FIG. 4 is a schematic view of the bottom structure of the cab skeleton;

FIG. 5 is a schematic view of the structure of the portion at point B in FIG. 4;

FIG. 6 is a schematic view of the structure of FIG. 4 at point C in an enlarged partial view;

FIG. 7 is a schematic view of the mounting structure of a silicone oil damper;

FIG. 8 is a schematic view of the structure of the portion D in FIG. 7;

FIG. 9 is a schematic view of the mounting structure of the cab skeleton on the frame;

FIG. 10 is a schematic diagram of a cab skeleton strength test;

FIG. 11 is a schematic diagram of a cab skeleton strength test;

FIG. 12 is a schematic diagram of a cab skeleton strength test;

FIG. 13 is a schematic diagram of a cab skeleton strength test;

fig. 14 is a standard plot of ROPS energy and force.

In the figure: the corner connector 1, the A column 2, the B column 3, the C column 4, the reinforcing beam 5, the first reinforcing rib 6, the second reinforcing rib 7, the rib plate 8, the corner protector 9, the bottom beam 10, the upper longitudinal beam 11, the square tube 12, the reinforcing column 13, the frame 14, the cab skeleton 15, the silicone damper 16, the damping mount 17, the limiting disc 18, the anti-tilting mount 19, the pull rod 20, the base plate 21, the positioning plate 22, the avoidance groove 23, the bolt 24 and the fixing plate 25.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The following is a description of preferred embodiments of the utility model, taken in conjunction with the accompanying drawings.

The utility model provides an excavator ROPS driver's cabin structure, including the driver's cabin skeleton 15 that is located the frame 14 upside, install the silicone damper 16 on the frame 14, the driver's cabin skeleton 15 is pressed and is leaned on the silicone damper 16 and with silicone damper 16 fixed connection, install anti-roll mount pad 19 on the frame 14, the pull rod 20 is installed to driver's cabin skeleton 15 bottom, pull rod 20 passes anti-roll mount pad 19 and with its sliding fit, the limiting plate 18 that pushes up when the driver's cabin skeleton 15 takes place the slope is leaned on anti-roll mount pad 19 is installed to the lower extreme of pull rod 20. Referring to fig. 1, after the above-mentioned structure is adopted, the silicone damper 16 is mounted on the frame 14, the cab frame 15 is lifted by the silicone damper 16, a small amount of floating exists between the cab frame 15 and the frame 14, then the cab frame 15 is anti-tilting limited by the anti-tilting mounting seat 19, the pull rod 20 and the limiting disc 18, the silicone damper 16 can reduce the vibration amount of the cab frame 15, when the cab frame 15 is excessively tilted, the pull rod 20 slides along the anti-tilting mounting seat 19, and when the cab is tilted to the limit position, the limiting disc 18 is propped against the lower side of the anti-tilting mounting seat 19, so that the cab frame 15 is prevented from tilting.

Referring to fig. 2, regarding a specific structure of the cab skeleton 15, the cab skeleton 15 includes two left and right spaced a-pillars located at the front side, two left and right spaced upper stringers 11 located at the top, the a-pillars and the corresponding upper stringers 11 are fixedly connected through corner connectors 1, and further includes two left and right spaced C-pillars located at the rear side, the C-pillars are fixedly connected with the rear ends of the upper stringers 11, and further includes two left and right spaced bottom beams 10 located at the bottom, the bottom beams 10 are fixedly connected with the corresponding a-pillars and C-pillars, the B-pillars extend downward and are fixedly connected with the bottom beams 10 corresponding to the bottom, and side doors of the cab of the excavator are installed between the B-pillars and the a-pillars at the front side. In order to strengthen the supporting structure of the A column, the A column is a hollow tube, the lower part of the A column is inserted with a reinforcing column 13, the reinforcing column 13 is a solid piece, and the reinforcing column 13 extends upwards along the A column. The reinforcement column 13 may reinforce the lower strength of the a-pillar.

Referring to fig. 2, regarding the connection structure of the upper longitudinal beam 11 and the a column, the upper longitudinal beam 11 is a hollow tube, the corner connector 1 is a hollow casting or stamping part splice welding structure, or is not limited to other processing modes, and two ends of the corner connector 1 are respectively inserted into the corresponding a column and the upper longitudinal beam 11. The corner connector 1 has a bending angle, and two ends of the corner connector 1 are inserted into the A column and the upper longitudinal beam 11, and then fixed by welding.

Referring to fig. 2, in order to enhance the connection strength of the front upper part of the cab framework 15, a reinforcing beam 5 is fixedly installed between two corner connectors 1, the reinforcing beam 5 is a solid member, a rib plate 8 is arranged between two upper longitudinal beams 11, and two ends of the rib plate 8 are fixedly connected with the two upper longitudinal beams 11 respectively.

Referring to fig. 1, in order to enhance the connection strength of two upper stringers 11, a first reinforcing rib 6 and a second reinforcing rib 7 are disposed between two upper stringers 11, two ends of the first reinforcing rib 6 and the second reinforcing rib 7 are fixedly connected with the two upper stringers 11, the first reinforcing rib 6 and the second reinforcing rib 7 are located behind the rib plate 8, and square tubes 12 for fixedly connecting the two upper stringers 11 are disposed at the rear ends of the upper stringers 11.

Referring to fig. 6, a corner protector 9 is installed between the included angle of the c column and the upper longitudinal beam 11, and a corner protector 9 is also installed between the included angle of the c column and the bottom beam 10. The corner protector 9 can enhance the connection strength of the two connectors. Regarding the specific structure of the corner protector 9, the corner protector 9 comprises a substrate 21, the substrate 21 is in a right triangle shape, an avoidance groove 23 extending inwards is formed at the right angle included angle of the substrate 21, and a bent positioning plate 22 is arranged at two right angle edges of the substrate 21. The two positioning plates 22 are attached to and fixedly connected with the two reinforced connecting posts.

Referring to fig. 8, regarding the arrangement structure of the silicone damper 16, the frame 14 is provided with four damper mounting seats 17, the four damper mounting seats 17 are respectively located at four corners below the cab frame 15, and the silicone damper 16 is mounted on the damper mounting seats 17. Regarding the connection structure of the silicone damper 16 and the cab skeleton 15, a fixing plate 25 is provided at the lower part of the cab skeleton 15, and a bolt 24 penetrating through the fixing plate 25 and fixedly connected to the fixing plate 25 is mounted on the silicone damper 16.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The utility model provides an excavator ROPS driver's cabin structure, includes driver's cabin skeleton (15) that are located frame (14) upside, its characterized in that, install silicone damper (16) on frame (14), driver's cabin skeleton (15) are pressed and are leaned on silicone damper (16) and with silicone damper (16) fixed connection, install anti-tilting mount pad (19) on frame (14), install pull rod (20) in driver's cabin skeleton (15) bottom, pull rod (20) pass anti-tilting mount pad (19) and with its sliding fit, limit disk (18) that the roof leans on anti-tilting mount pad (19) when driver's cabin skeleton (15) take place to incline are installed to the lower extreme of pull rod (20).

2. The ROPS cab structure of an excavator according to claim 1, wherein the cab skeleton (15) comprises an a column (2) located at two left and right intervals on the front side, an upper longitudinal beam (11) located at two left and right intervals on the top, the a column (2) and the corresponding upper longitudinal beam (11) are fixedly connected through an angle connector (1), the structure further comprises a C column (4) located at two left and right intervals on the rear side, the C column (4) is fixedly connected with the rear end of the upper longitudinal beam (11), the structure further comprises a bottom beam (10) located at two left and right intervals on the bottom, the bottom beam (10) fixedly connects the corresponding a column (2) and the C column (4), a B column (3) is mounted on the upper longitudinal beam (11) on one side, and the B column (3) extends downwards and is fixedly connected with the bottom beam (10) corresponding to the lower side.

3. The ROPS cab structure of the excavator according to claim 2, wherein the a-pillar (2) is a hollow tube, the reinforcing pillar (13) is inserted into the lower portion of the a-pillar (2), the reinforcing pillar (13) is a solid member, and the reinforcing pillar (13) extends upward along the a-pillar (2).

4. The ROPS cab structure of the excavator according to claim 2, wherein the upper longitudinal beam (11) is a hollow pipe, the corner connecting piece (1) is a hollow casting or stamping part splice welding structure, two ends of the corner connecting piece (1) are respectively inserted into the corresponding A column (2) and the upper longitudinal beam (11), and a square pipe (12) for fixedly connecting the two is arranged at the rear end of the upper longitudinal beam (11).

5. The excavator ROPS cab structure according to claim 2, characterized in that a stiffening beam (5) is fixedly installed between the two corner connectors (1), the stiffening beam (5) is a solid piece, a rib plate (8) is arranged between the two upper longitudinal beams (11), and two ends of the rib plate (8) are fixedly connected with the two upper longitudinal beams (11) respectively.

6. The ROPS cab structure of an excavator according to claim 5, wherein a first reinforcing rib (6) and a second reinforcing rib (7) are arranged between the two upper longitudinal beams (11), two ends of the first reinforcing rib (6) and two ends of the second reinforcing rib (7) are fixedly connected with the two upper longitudinal beams (11), and the first reinforcing rib (6) and the second reinforcing rib (7) are located behind the rib plates (8).

7. The ROPS cab structure of the excavator according to claim 2, wherein a corner protector (9) is installed between the included angle of the C-pillar (4) and the upper longitudinal beam (11), and a corner protector (9) is also installed between the included angle of the C-pillar (4) and the bottom beam (10).

8. The ROPS cab structure of the excavator according to claim 7, wherein the corner protector (9) comprises a base plate (21), the base plate (21) is in a right triangle shape, an inward extending avoiding groove (23) is formed at a right angle included angle of the base plate (21), and bent positioning plates (22) are arranged at two right angle edges of the base plate (21).

9. The structure of the ROPS cab of the excavator according to any one of claims 1 to 8, wherein the frame (14) is provided with four shock absorbing mounts (17), the four shock absorbing mounts (17) are respectively located at four corners below the cab frame (15), and the silicone shock absorber (16) is mounted on the shock absorbing mounts (17).

10. The structure of the ROPS cab of the excavator according to claim 9, wherein the lower portion of the cab skeleton (15) is provided with a fixing plate (25), and the silicone damper (16) is provided with bolts (24) penetrating through the fixing plate (25) and fixedly connected with the fixing plate (25).