阅读说明：本技术 牵引架以及平地机 (Traction frame and land leveler ) 是由 高乐 侯鹏龙 段俊杰 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种牵引架以及平地机,涉及工程机械领域。该牵引架包括支撑板、连接板以及端板。支撑板包括安装孔,支撑板被构造为相对于自身中线对称。连接板对称设置于中线的两侧,各连接板被构造为弯折的,且各连接板的弯折处位于安装孔的孔心与支撑板的第一端之间。端板安装于支撑板,且与连接板的第一端固定相连。其中,牵引架被构造为是等强度的。上述技术方案,牵引架的结构采用拓扑优化设计得出,牵引架采用板式结构,形成了等强度设计结构,所以牵引架具有很大的刚度和强度,牵引架能够承受很大的弯矩。(The invention discloses a traction frame and a land leveler, and relates to the field of engineering machinery. The traction frame comprises a support plate, a connecting plate and an end plate. The support plate includes a mounting hole, and the support plate is configured to be symmetrical with respect to a center line thereof. The connecting plates are symmetrically arranged on two sides of the center line, each connecting plate is bent, and the bent part of each connecting plate is located between the hole center of the mounting hole and the first end of the supporting plate. The end plate is arranged on the supporting plate and is fixedly connected with the first end of the connecting plate. Wherein the traction frame is configured to be of equal strength. Above-mentioned technical scheme, the structure of traction frame adopts topological optimization design to obtain, and the traction frame adopts plate structure, has formed the design structure of equidensity, so the traction frame has very big rigidity and intensity, and the traction frame can bear very big moment of flexure.)

1. A traction frame, comprising:

a support plate (1) comprising a mounting hole (11), said support plate (1) being configured to be symmetrical with respect to its centerline;

the connecting plates (2) are symmetrically arranged on two sides of the center line, each connecting plate (2) is bent, and the bent position of each connecting plate (2) is located between the hole center of the mounting hole (11) and the first end of the supporting plate (1); and

the end plate (3) is arranged on the support plate (1) and is fixedly connected with the first end of the connecting plate (2);

wherein the traction frame is configured to be isostrength.

2. The hitch frame of claim 1, further comprising:

the first reinforcing plate (4) is fixedly connected with the connecting plate (2) and the supporting plate (1), and the first reinforcing plate (4) is located on one side, facing the mounting hole (11), of the connecting plate (2).

3. Traction frame according to claim 2, characterized in that said first reinforcement plate (4) comprises:

a first section plate (41) having a gap with a first section of the connection plate (2); and

the second section plate (42) is attached to and fixedly connected with the second section of the connecting plate (2); the second section plate (42) is integral with the first section plate (41).

4. The hitch frame of claim 2, further comprising:

the supporting piece (5) is fixedly connected with the end plate (3) and the connecting plate (2), and the supporting piece (5) is positioned between the connecting plate (2) and the end plate (3); and

ball round pin (6), with support piece (5) with end plate (3) all are connected, just ball round pin (6) with the hookup location of support piece (5), ball round pin (6) with the hookup location of end plate (3) staggers.

5. Traction frame according to claim 4, characterized in that said support (5) comprises:

the first vertical plate (51) is fixedly connected with the supporting plate (1); and

the second vertical plate (52) is vertically arranged with the first vertical plate (51) and is also fixedly connected with the support plate (1);

the first end of the first vertical plate (51) is fixedly connected with the end plate (3), the second end of the first vertical plate (51) is fixedly connected with the first surface of the second vertical plate (52), and the second surface of the second vertical plate (52) is fixedly connected with the first surface of the connecting plate (2).

6. Traction frame according to claim 4, characterized in that there are two of said supports (5) and said ball pins (6), two of said supports (5) being arranged symmetrically with respect to said median line and two of said ball pins (6) being arranged symmetrically with respect to said median line.

7. The hitch frame of claim 1, further comprising:

the third vertical plates (7) are fixedly connected with the second ends of the connecting plates (2); and

and the ball head (8) is fixedly connected with the third vertical plate (7).

8. The hitch frame of claim 7, further comprising:

and the connecting piece (9) is arranged between the ball head (8) and the third vertical plate (7).

9. The hitch frame of claim 7, further comprising:

and the second reinforcing plate (12) is fixedly connected with the second end of each connecting plate (2) and the third vertical plate (7).

10. The hitch of claim 1, wherein the hitch is configured as a whole with a first end having a greater dimension perpendicular to the midline than a second end having a dimension perpendicular to the midline.

11. Traction frame according to claim 1, characterized in that the length direction of the end plate (3) is parallel to the width direction of the support plate (1), the width direction of the support plate (1) being perpendicular to the median line and lying in the same plane.

12. A grader comprising a traction frame (10) according to any of claims 1 to 11.

13. The grader according to claim 12, characterized in that the ball pin (6) of the traction carriage (10) comprises:

a first ball pin (61) connected to a lift cylinder (20) of the grader; and

and the second ball pin (62) is connected with a side swing oil cylinder (30) of the land scraper.

14. Grader according to claim 12, characterized in that the ball (8) of the traction frame (10) is connected to the frame (40) of the grader.

Technical Field

The invention relates to the field of engineering machinery, in particular to a traction frame and a land leveler.

Background

The land leveler is a main machine used for shaping and leveling work in the earthwork, and is also an important device in the construction of national defense engineering, mine construction, road construction, water conservancy construction, farmland improvement and the like. The grader has a wide range of auxiliary operation capabilities due to its blade capability to perform six degrees of freedom of motion in space. The traction frame structure is used as a main bearing structural member of the land scraper and is a key structural member for completing the actions. The stability of the traction frame is directly related to the stability of the whole vehicle. During operation, especially during heavy-load operation, the traction frame is subjected to large bending moment and torque.

In recent years, the operation performance of the land leveller is continuously improved, the tonnage is continuously increased, the width of a scraper knife and the loaded load are correspondingly increased, the bending resistance and the torsion resistance of a traction frame structure have potential safety hazards, and the stability of the whole land leveller is influenced.

At present, the bending resistance and torsion resistance of the structure of a traction frame used by a grader are mainly born by a square tube, and the bending resistance and torsion resistance of the square tube structure are poor.

Disclosure of Invention

The invention provides a traction frame and a land leveler.

One aspect of the present invention provides a traction frame, including:

a support plate including a mounting hole, the support plate being configured to be symmetrical with respect to a center line thereof;

the connecting plates are symmetrically arranged on two sides of the center line, each connecting plate is bent, and the bent part of each connecting plate is positioned between the hole center of the mounting hole and the first end of the supporting plate; and

the end plate is arranged on the supporting plate and is fixedly connected with the first end of the connecting plate;

wherein the traction frame is configured to be isostrength.

In some embodiments, the traction frame further comprises:

the first reinforcing plate is fixedly connected with the connecting plate and the supporting plate, and the first reinforcing plate is located on one side, facing the mounting hole, of the connecting plate.

In some embodiments, the first stiffener plate includes:

a first section plate having a gap with the first section of the connecting plate; and

the second section plate is attached to and fixedly connected with the second section of the connecting plate; the second section of plate is integral with the first section of plate.

In some embodiments, the traction frame further comprises:

the supporting piece is fixedly connected with the end plate and the connecting plate and is positioned between the connecting plate and the end plate; and

the ball pin, with support piece with the end plate is all connected, just the ball pin with the hookup location of support piece, the ball pin with the hookup location of end plate staggers.

In some embodiments, the support comprises:

the first vertical plate is fixedly connected with the supporting plate; and

the second vertical plate is perpendicular to the first vertical plate and is also fixedly connected with the supporting plate;

the first end of the first vertical plate is fixedly connected with the end plate, the second end of the first vertical plate is fixedly connected with the first surface of the second vertical plate, and the second surface of the second vertical plate is fixedly connected with the first surface of the connecting plate.

In some embodiments, there are two of the supports and the ball pins, two of the supports are symmetrically disposed with respect to the centerline, and two of the ball pins are symmetrically disposed with respect to the centerline.

In some embodiments, the traction frame further comprises:

the third vertical plate is fixedly connected with the second end of each connecting plate; and

and the bulb is fixedly connected with the third vertical plate.

In some embodiments, the traction frame further comprises:

and the connecting piece is arranged between the ball head and the third vertical plate.

In some embodiments, the traction frame further comprises:

and the second reinforcing plate is fixedly connected with the second end of each connecting plate and the third vertical plate.

In some embodiments, the traction frame is configured as a whole such that a dimension of the first end in a direction perpendicular to the midline is greater than a dimension of the second end in a direction perpendicular to the midline.

In some embodiments, the length direction of the end plate is parallel to the width direction of the support plate, and the width direction of the support plate is perpendicular to the midline and in the same plane.

The embodiment of the invention also provides a land scraper which comprises the traction frame provided by any technical scheme of the invention.

In some embodiments, the ball pin of the traction frame comprises:

the first ball pin is connected with a lifting oil cylinder of the land leveler; and

and the second ball pin is connected with a side swing oil cylinder of the land leveler.

In some embodiments, the ball of the traction frame is coupled to the frame of the grader.

Above-mentioned technical scheme, the structure of traction frame adopts topological optimization design to obtain, and the traction frame adopts plate structure, has formed the design structure of equidensity, so the traction frame has very big rigidity and intensity, and the traction frame can bear very big moment of flexure. When installing above-mentioned traction frame to the leveler in, even if the leveler is when heavy load operation, the traction frame also can bear very big moment of flexure. Therefore, the traction frame provided by the technical scheme is reasonable in structure, and high in rigidity and strength. The traction frame can bear a large bending moment during heavy-load operation of the land leveler, and the stability of the whole vehicle is high; moreover, the rigidity and strength of the structure are matched more reasonably, the weight is light, compared with the traction frame of other structures with the same bearing capacity, the weight is lighter, and the lightweight design of the traction frame is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a schematic perspective view of a traction frame according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a traction frame according to an embodiment of the present invention;

fig. 3 is a schematic front view of a traction frame according to an embodiment of the present invention;

fig. 4 is a schematic top view of a traction frame according to an embodiment of the present invention;

fig. 5 is a schematic side view of a traction frame according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating an installation of a traction frame according to an embodiment of the present invention.

Detailed Description

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 6.

Referring to fig. 1 to 6, an embodiment of the present invention provides a traction frame 10, which includes a support plate 1, a connection plate 2, and an end plate 3. The supporting plate 1 includes a mounting hole 11, and the supporting plate 1 is configured to be symmetrical with respect to its center line L1. The connection plates 2 are symmetrically disposed at both sides of the center line L1, each connection plate 2 is configured to be bent, and the bent portion M of each connection plate 2 is located between the hole center of the mounting hole 11 and the first end of the support plate 1. The first end of the support plate 1 means an end of the support plate 1 having a relatively large width. The end plate 3 is installed on the supporting plate 1 and fixedly connected with the first end of the connecting plate 2. Wherein the traction frame 10 is constructed to be of equal strength.

The direction in which the center line L1 of the supporting plate 1 is located is the X direction, also referred to as the longitudinal direction. The direction perpendicular to X is the Y direction, also referred to as the width direction; the direction in which the maximum width of the supporting plate 1 is located is L2. The plates mentioned in the embodiments of the present invention may be fixedly connected by welding, unless otherwise specified.

The support plate 1 is a one-piece plate. The connecting plate 2 and the end plate 3 are also one integral plate. The supporting plate 1, the connecting plate 2 and the end plate 3 do not adopt a splicing structure, but all adopt a whole plate, so that the strength of each plate is higher, and the problems of stress concentration and the like caused by welding seams can be reduced.

The connecting plate 2 is one of the main bearing parts of the traction frame 10, the connecting plate 2 adopts a bent plate structure, and the bent position M corresponds to the position of the width direction of the supporting plate 1 corresponding to the mounting hole 11 of the supporting plate 1. The bending part M is arranged at the position, so that the bearing structure of the traction frame 10 is more reasonable, and the equal-strength design of the traction frame 10 is more facilitated.

As shown in fig. 1 to 4, the connecting plate 2 has two pieces, hereinafter referred to as a first connecting plate 21 and a second connecting plate 22 for convenience of description.

The end plate 3 is arranged at a first end of the connecting plate 2, and the first end of the connecting plate 2 and the end plate 3 can be fixedly connected directly or through an intermediate component. The provision of the end plates 3 effectively increases the support strength, rigidity and structural stability of the traction frame 10.

In the actual working process, the traction frame 10 has a large load bearing capacity at the positions on the two sides of the mounting hole 11, the connecting plate 2 is arranged to be bent, the bent position M corresponds to the edge position of the width direction of the supporting plate 1 corresponding to the mounting hole 11 of the supporting plate 1, the bearing strength and rigidity of the connecting plate 2 are effectively improved by the arrangement mode, and the bearing strength and rigidity of the whole traction frame 10 are further improved. Moreover, the traction frame 10 is constructed to have equal strength, so that a part with stronger bearing capacity can be borne in the using process, the shape and the structure of the corresponding part can bear higher bearing capacity, the traction frame 10 is almost free of redundant design, the requirements on bearing capacity and strength are effectively unified, the light weight of the traction frame 10 is realized, and the structure of the traction frame 10 is optimized.

According to the technical scheme of the embodiment of the invention, through topological optimization design, a novel layout structure of the traction frame 10 of the grader is formed by adopting multiple structural forms of a flat plate and a bent plate, the structure is light in weight and has high bending rigidity and strength, the design contradiction between the structural weight and the structural rigidity and strength is effectively solved, the lightweight design of the traction frame 10 structure is facilitated, the reliability of the traction frame 10 structure is facilitated, and the operation reliability and stability of the whole grader are improved.

Referring to fig. 1, 2 and 4, in some embodiments, the traction frame 10 further includes a first reinforcing plate 4, the first reinforcing plate 4 is fixedly connected to both the connecting plate 2 and the support plate 1, and the first reinforcing plate 4 is located on a side of the connecting plate 2 facing the mounting hole 11.

The first reinforcing plate 4 is arranged, so that the bearing strength of the first reinforcing plate 4 in the range of the length direction of the first reinforcing plate 4 is effectively enhanced, namely the bearing capacity of the structure of the OB section is enhanced, and meanwhile, the bearing capacity of the whole AB section and the whole traction frame 10 are also enhanced.

Referring to fig. 1, 2 and 4, in some embodiments, the first reinforcement panel 4 includes a first section panel 41 and a second section panel 42. The first section plate 41 has a gap N with the first section of the connection plate 2. The second section plate 42 is attached and fixedly connected with the second section of the connecting plate 2. The second segment plate 42 is integral with the first segment plate 41.

Referring to fig. 1 and 2, the first reinforcing plate 4 is also bent in shape. The first section 41 mainly serves as a reinforcement and the second section 42 mainly serves as a stable connection. The second segment plate 42 is, for example, triangular in shape. The second segment 42 is integrally attached and fixedly connected to the second end of the connecting plate 2, thus forming a surface-to-surface fixation. The end of the first section plate 41 remote from the second section plate 42, i.e. the first end of the first section plate 41 is welded to the end plate 3, and the main joint is two welded seams.

Referring to fig. 1 and 2, the bottom surface of the first reinforcing plate 4, which is attached to the support plate 1, is also welded to the support plate 1. The connection positions of the whole traction frame 10 are multiple and uniformly dispersed, and the structural rigidity and the strength of the traction frame 10 are enhanced.

Referring to fig. 1 and 4, in some embodiments, the traction frame 10 further includes a support 5 and a ball pin 6. The support piece 5 is fixedly connected with the end plate 3 and the connecting plate 2, and the support piece 5 is positioned between the connecting plate 2 and the end plate 3. The ball pin 6 is connected to both the support 5 and the end plate 3, and the positions of connection of the ball pin 6 to the support 5 and the positions of connection of the ball pin 6 to the end plate 3 are staggered.

The support 5 and the end plate 3 are both connected to the ball pin 6, thus providing a multi-point support for the ball pin 6, the ball pin 6 being supported in a manner other than cantilevered. Due to the arrangement, in the subsequent use process of the ball pin 6, the stress of the ball pin 6 is more balanced, and the larger bending moment load can be borne. In addition, the connecting welding seams among the support piece 5, the connecting plate 2 and the end plate 3 are large in number, even if the traction frame 10 bears a large bending moment, the welding seams are not easy to crack, and the reliability of the traction frame 10 is improved.

Referring to fig. 1 and 4, in some embodiments, support 5 includes a first riser 51 and a second riser 52. The first vertical plate 51 is fixedly connected with the support plate 1. The second vertical plate 52 is vertically arranged with the first vertical plate 51 and is also fixedly connected with the support plate 1. The first end of first riser 51 is fixed with end plate 3 and links to each other, and the second end of first riser 51 is fixed with the first surface of second riser 52 and is linked to each other, and the second surface of second riser 52 is fixed with the first end of connecting plate 2 and is linked to each other.

Referring to fig. 1 and 2, the first upright plate 51, the first connecting plate 21 and one of the first reinforcing plates 4 generally form a Y-shaped structure. Since there are two of the various components described above, the overall traction frame 10 has two of the aforementioned Y-shaped configurations, and the two Y-shaped configurations are symmetrically arranged with respect to the centerline L1. The Y-shaped structure effectively improves the bending resistance and torsion resistance of the traction frame 10.

Referring to fig. 1 and 2, one of the first reinforcing plate 4, the first connecting plate 21, the first upright plate 51, and the second upright plate 52 forms a rectangular structure. Since there are two for each of the above-mentioned components, there are two for the above-mentioned rectangular structure. The entire traction frame 10 has two of the above-described rectangular configurations, and the two rectangular configurations are symmetrically arranged with respect to the center line L1. The rectangular structure can effectively bear the bending moment brought by the ball pin 6.

Referring to fig. 1, 2 and 4, in some embodiments, there are two of the support 5 and the ball pin 6. The two supports 5 are symmetrically arranged with respect to the centre line L1 and the two ball pins 6 are also symmetrically arranged with respect to the centre line L1. One of the ball pins 6 is connected with the side swing oil cylinder 30 in a ball hinge mode, and the other ball pin 6 is connected with the lifting oil cylinder 20 in a ball hinge mode.

Referring to fig. 1, 2 and 4, in some embodiments, the traction frame 10 further includes a third riser 7 and a ball 8. The third vertical plate 7 is fixedly connected with the second end of each connecting plate 2. The bulb 8 is fixedly connected with the third vertical plate 7. The ball 8 is adapted to be connected to a frame 40 of the grader.

Referring to fig. 1, 2 and 4, in some embodiments, the traction frame 10 further includes a connector 9, and the connector 9 is installed between the ball 8 and the third vertical plate 7.

The connecting piece 9 is specifically, for example, a cylinder, the connecting piece 9 is welded and fixed with the third vertical plate 7, and the ball 8 is in bolt connection with the connecting piece 9. The connecting piece 9 is arranged, so that the ball head 8 is more convenient to mount, and after the frame 40 and the traction frame 10 are mounted together, in the subsequent movement process, the interference phenomenon is not easy to occur between the traction frame 10 and the frame 40.

Referring to fig. 1, 2 and 4, in some embodiments, the traction frame 10 further includes a second reinforcing plate 12, and the second reinforcing plate 12 is fixedly connected to the second end of each connecting plate 2 and the third vertical plate 7.

The second reinforcing plate 12 is, for example, a flat plate. The second reinforcing plate 12 is welded and fixed with the second end of each connecting plate 2, and the second reinforcing plate 12 is also welded and fixed with the third vertical plate 7, so as to enhance the structural rigidity and strength of the second end of the traction frame 10, thereby increasing the bearing capacity of the traction frame.

As shown in fig. 1, 2 and 4, in some embodiments, the traction frame 10 is generally configured such that the dimension W1 of the first end in a direction perpendicular to the centerline L1 is greater than the dimension W2 of the second end in a direction perpendicular to the centerline L1. The traction frame 10 adopts the above structural design, so that on one hand, the bearing requirement is met, and on the other hand, the structure of the traction frame 10 is compact.

Referring to fig. 4, in some embodiments, the length direction L2 of the end plate 3 is parallel to the width direction Y of the supporting plate 1, and the width direction Y of the supporting plate 1 is perpendicular to and in the same plane as the direction X of the center line L1.

The end plate 3 is arranged at the position where the width of the support plate 1 is maximum, so that the requirements of bearing and mounting are met, the bearing performance of the traction frame 10 is improved, and the bearing performance of the traction frame 10 is improved.

Referring to fig. 6, the embodiment of the present invention further provides a motor grader, including the traction frame 10 according to any of the embodiments of the present invention.

Referring to fig. 1, 2, and 6, in some embodiments, the ball pin 6 of the traction frame 10 includes a first ball pin 61 and a second ball pin 62. The first ball pin 61 is connected to the lift cylinder 20 of the grader. The second ball pin 62 is connected to the side-sway cylinder 30 of the grader.

Referring to fig. 1, 2, and 6, in some embodiments, the ball 8 of the traction frame 10 is coupled to a frame 40 of the grader.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in 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 as limiting the scope of the present invention.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.