CN219029556U - Frame and engineering machinery - Google Patents

Abstract

The utility model relates to the field of engineering machinery and discloses a frame and engineering machinery, wherein the frame comprises a top plate, a support beam and a rear axle mounting seat, the support beam is arranged on the bottom surface of the top plate and extends along the length direction of the top plate, the rear axle mounting seat comprises a middle connecting plate and a rear axle mounting plate for mounting a rear axle, the middle connecting plate is connected to the outer side surface of the support beam and is provided with an avoidance notch for avoiding a bottom convex strip of the support beam, and the rear axle mounting plate is connected to the middle connecting plate and is positioned below the support beam. The utility model effectively improves the overall strength, the bearing capacity and the safety coefficient of the frame.

Description

Frame and engineering machinery

Technical Field

The utility model belongs to the field of engineering machinery, and particularly relates to a frame and engineering machinery using the same.

Background

The structural strength and load bearing capacity of a frame, which is a main load bearing member in construction machines such as excavators and bulldozers, have a direct influence on the work strength and safety factor of the construction machines such as excavators and bulldozers.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a prior art vehicle frame, and fig. 2 is a transverse partial sectional view of the vehicle frame of fig. 1. In order to enable the support beam 02 to have enough structural strength, the support beam 02 generally adopts a U-shaped structure formed by welding an L-shaped plate and a vertical side plate, one side of the bottom of the support beam 02 is provided with a bottom convex strip 04 extending along the length direction of the support beam 02, when the frame is practically applied, the rear axle mounting seat 03 is connected to the support beam 02, the bottom convex strip 04 is continuously in a state of being sheared by the rear axle mounting seat 03, and the shearing allowable stress of the material is smaller than the basic allowable stress of the material, so that the bottom convex strip 04 is sheared and yielded, the yield strength is lower, the deformation of the bottom convex strip 04 is difficult to recover or the bottom convex strip 04 breaks, so that the connection deformation or even breakage between the rear axle mounting seat 03 and the support beam 02 is caused, and the overall strength, the bearing capacity and the safety factor of the frame are lower.

At present, the main mode for solving the above-mentioned situation is to increase the structural strength by increasing the thickness of the L-shaped plate or by adding structures such as reinforcing ribs, but these modes can certainly increase the cost and difficulty of manufacturing the frame, and at the same time, the weight of the frame can also be increased.

Disclosure of Invention

Aiming at the defects or the defects in the prior art, the utility model provides a frame and engineering machinery, and aims to solve the technical problems of lower overall strength, bearing capacity and safety coefficient of the existing frame.

To achieve the above object, the present utility model provides a vehicle frame including:

a top plate;

a support beam provided on the bottom surface of the top plate and extending in the longitudinal direction of the top plate; and

the rear axle installation seat comprises a middle connecting plate and a rear axle installation plate for installing a rear axle, wherein the middle connecting plate is connected to the outer side surface of the supporting beam and provided with an avoidance gap for avoiding bottom convex strips of the supporting beam, and the rear axle installation plate is connected to the middle connecting plate and located below the supporting beam.

Optionally, the support beam comprises an L-shaped plate and a vertical side plate, the vertical plate portion of the L-shaped plate is vertically arranged and the top end is connected to the bottom surface of the top plate, the vertical plate portion extends along the length direction of the top plate, the horizontal plate portion of the L-shaped plate extends outwards from the bottom end of the vertical plate portion along the width direction of the top plate, the vertical side plate is vertically arranged and extends along the length direction of the top plate, the top end of the vertical side plate is connected to the bottom surface of the top plate, the bottom end of the vertical side plate is connected to the top surface of the horizontal plate portion, the portion, which extends outwards in the width direction of the top plate, of the horizontal plate portion beyond the vertical side plate is the bottom convex strip,

the middle connecting plate is provided with an L-shaped connecting port, the vertical side wall of the L-shaped connecting port is in matched connection with the outer side face of the vertical side plate, the lateral side wall of the L-shaped connecting port is in matched connection with the bottom face of the lateral plate, and the avoidance notch is formed at the joint of the vertical side wall and the lateral side wall.

Optionally, the inner wall of dodging the breach has straightway and arc section, the one end of arc section with the bottom surface of horizontal board portion links to each other and hookup location is kept away from the bottom sand grip, the other end of arc section encircles the periphery top extension of bottom sand grip, the one end of straightway with the lateral surface of vertical curb plate links to each other, the other end of straightway with the other end of arc section links to each other, just the straightway with the arc section is tangent.

Optionally, the distance between the junction of straight line section with the lateral surface of vertical curb plate and the bottom terminal surface of vertical curb plate is L1, L1 satisfies the relation: 1.2 Xmin (S1, S2). Ltoreq.L1.ltoreq.1.5 Xmin (S1, S2), wherein S1 is the thickness of the vertical side plate and S2 is the thickness of the lateral plate portion.

Optionally, a distance between a connection part of the arc section and the bottom surface of the transverse plate portion and the bottom convex strip is L2, and the L2 satisfies the relationship: l2 is more than or equal to 3mm and less than or equal to 5mm.

Optionally, the rear axle mounting panel is followed the width direction of roof is extended and with horizontal plate portion sets up relatively, the rear axle mounting panel has in the width direction of roof is outwards surpassed the extension section of bottom sand grip, the extension section has seted up a plurality of edges the rear axle mounting hole of the width direction interval arrangement of roof.

Optionally, the top plate has a connecting section that extends beyond the vertical side plate toward the outside in the width direction, and the top end of the intermediate connecting plate is connected to the bottom surface of the connecting section.

Optionally, the top end of the middle connecting plate is far away from the outer side edge of the vertical side plate and is flush with the outer side end surface of the connecting section.

Optionally, a midpoint of a line between an innermost edge point of the rear axle mounting holes located at the innermost side and an outermost edge point of the rear axle mounting holes located at the outermost side of the plurality of rear axle mounting holes is marked as a first reference point, an innermost edge point of the rear axle mounting holes located at the innermost side is marked as a second reference point, and a plane where an outer end face of the connecting section is located between the first reference point and the second reference point in the width direction of the top plate.

The utility model also provides engineering machinery comprising the frame.

In the frame, the rear axle mounting seat is provided with the avoidance notch for avoiding the bottom convex strip of the support beam, so that the bottom convex strip is always in an unstressed state when the frame is practically applied, the situation that the connection between the rear axle mounting seat and the support beam is deformed or broken after the bottom convex strip is continuously sheared by the rear axle mounting seat to cause the phenomenon that the deformation is difficult to recover or the bottom convex strip is broken is effectively avoided, and the integral strength, the bearing capacity and the safety coefficient of the frame are effectively improved; in addition, because the gap is formed between the bottom convex strips and the inner wall of the avoidance gap, namely, the bottom convex strips and the inner wall of the avoidance gap are in non-contact or connection, in the manufacturing process of the support beam and the connecting and assembling process of the support beam and the rear axle installation seat, the machining and assembling precision of the bottom convex strips are not required to be ensured, and in this way, the manufacturing difficulty of the support beam and the connecting and assembling difficulty of the support beam and the rear axle installation seat can be greatly reduced.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of a frame according to the prior art;

FIG. 2 is a transverse partial cross-sectional view of a vehicle frame according to the prior art;

FIG. 3 is a transverse partial cross-sectional view of a vehicle frame in accordance with one embodiment of the utility model;

FIG. 4 is a partial perspective view of the frame of FIG. 3;

FIG. 5 is a schematic view of the rear axle mounting base and the rear axle in FIG. 3;

FIG. 6 is a transverse partial cross-sectional view of a frame in accordance with another embodiment of the utility model;

FIG. 7 is a schematic diagram of a design process for avoiding a notch in accordance with one embodiment of the present utility model.

Reference numerals in fig. 1 and 2 illustrate in the prior art:

01. roof 03 rear axle mounting seat

02. Bottom raised strip of supporting beam 04

Reference numerals in fig. 3 to 7 illustrate the embodiments of the present utility model:

1. top plate

11. Connecting section

2. Supporting beam

21 L-shaped plate 211 vertical plate part

212. Bottom convex strip of transverse plate 212a

22. Vertical side plate

3. Rear axle mounting seat

31. Gap is dodged to middle connecting plate 311

311a straight line segment 311b arc segment

32. Extension section of rear axle mounting plate 321

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.

The present utility model will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model firstly provides a frame.

In one embodiment, referring to fig. 3 to 5, the frame includes a top plate 1, a support beam 2 and a rear axle mounting seat 3, the support beam 2 is disposed on the bottom surface of the top plate 1 and extends along the length direction of the top plate 1, the rear axle mounting seat 3 includes a middle connecting plate 31 and a rear axle mounting plate 32 for mounting a rear axle, the middle connecting plate 31 is connected to the outer side surface of the support beam 2 and is provided with a avoidance gap 311 for avoiding a bottom convex strip 212a of the support beam 2, and the rear axle mounting plate 32 is connected to the middle connecting plate 31 and is located below the support beam 2.

In this embodiment, the support beam 2 may have a U-shaped structure formed by connecting an L-shaped plate and a vertical side plate, and a portion of the bottom of the L-shaped plate beyond the bottom end of the vertical side plate forms the bottom protruding strip 212a, which can be referred to later embodiments; in other embodiments, the supporting beam 2 may be formed by connecting a transverse bottom plate and two vertical side plates, where the two vertical side plates are oppositely disposed on the top surface of the transverse bottom plate to form a U-shaped structure, and the portion of the end of the transverse bottom plate beyond the bottom end of the vertical side plate forms the bottom protruding strip 212a.

It can be appreciated that in this embodiment, the rear axle mounting seat 3 is provided with the avoidance notch 311 for avoiding the bottom convex strip 212a of the support beam 2, so that the bottom convex strip 212a is always in an unstressed state when the vehicle frame is actually applied, and the situation that the connection between the rear axle mounting seat 3 and the support beam 2 is deformed or broken after the bottom convex strip 212a is continuously sheared by the rear axle mounting seat 3 to cause deformation and difficult recovery or fracture is effectively avoided, so that the overall strength, the bearing capacity and the safety coefficient of the vehicle frame are effectively improved.

In addition, because there is a gap between the bottom protruding strip 212a and the inner wall of the avoidance gap 311, that is, there is no contact or connection between the bottom protruding strip 212a and the inner wall of the avoidance gap 311, so, in the process of manufacturing the support beam 2 and connecting and assembling the support beam 2 and the rear axle mounting seat 3, there is no need to ensure the processing and assembling precision of the bottom protruding strip 212a, through this, the difficulty of manufacturing the support beam 2 and connecting and assembling the support beam 2 and the rear axle mounting seat 3 can be greatly reduced, for example, the support beam 2 is a U-shaped structure formed by connecting an L-shaped plate and a vertical side plate, the bottom part of the L-shaped plate exceeds the bottom end of the vertical side plate to form the bottom protruding strip 212a, when there is no need to ensure the processing and assembling precision of the bottom protruding strip 212a, the blanking and bending difficulty of the L-shaped plate can be greatly reduced, and the connecting difficulty of the L-shaped plate and the vertical side plate is also reduced.

In this embodiment, specifically, the rear axle mounting seat 3 may include a plurality of intermediate connection plates 31, where the plurality of intermediate connection plates 31 are all connected to the outer side surface of the support beam 2 and are arranged at intervals along the extending direction of the support beam 2, and each intermediate connection plate 31 is provided with a avoidance gap 311.

In one embodiment, referring to fig. 3 to 5, the support beam 2 includes an L-shaped plate 21 and a vertical side plate 22, the vertical plate portion 211 of the L-shaped plate 21 is vertically disposed and the top end is connected to the bottom surface of the top plate 1, the vertical plate portion 211 extends along the length direction of the top plate 1, the lateral plate portion 212 of the L-shaped plate 21 extends outward along the width direction of the top plate 1 from the bottom end of the vertical plate portion 211, the vertical side plate 22 is vertically disposed and extends along the length direction of the top plate 1, the top end of the vertical side plate 22 is connected to the bottom surface of the top plate 1, the bottom end of the vertical side plate 22 is connected to the top surface of the lateral plate portion 212, the portion of the lateral plate portion 212, which is outward beyond the vertical side plate 22 in the width direction of the top plate 1, is a bottom convex strip 212a, the middle connecting plate 31 is provided with an L-shaped connecting port, the vertical side wall of the L-shaped connecting port is connected to the bottom surface of the lateral plate portion 212 in a matching manner, and the avoiding notch 311 is formed at the connection point of the vertical side wall and the lateral side wall.

It can be understood that, the middle connecting plate 31 is connected with the lateral surface and the bottom surface of the supporting beam 2 respectively through the vertical side wall and the lateral side wall of the L-shaped connecting port, and the bottom convex strip 212a is avoided through the avoidance notch 311, so that when the frame is practically applied, the supporting beam 2 only can be subjected to the extrusion force of the rear axle mounting seat 3, the yield strength is higher, the unrecoverable deformation or fracture is not easy to occur, and the whole bearing capacity, the structural strength and the safety coefficient of the frame are greatly improved.

Specifically, the vertical side wall of the L-shaped connection port is connected to the outer side surface of the vertical side plate 22 by welding, and the lateral side wall of the L-shaped connection port is connected to the bottom surface of the lateral plate 212 by welding.

In one embodiment, referring to fig. 3 to 5, the inner wall of the avoidance gap 311 has a straight line segment 311a and an arc segment 311b, one end of the arc segment 311b is connected with the bottom surface of the transverse plate portion 212 and the connection position is far away from the bottom convex strip 212a, the other end of the arc segment 311b extends upward around the periphery of the bottom convex strip 212a, one end of the straight line segment 311a is connected with the outer side surface of the vertical side plate 22, the other end of the straight line segment 311a is connected with the other end of the arc segment 311b, and the straight line segment 311a is tangent to the arc segment 311b, so that the connection position between the inner wall of the avoidance gap 311 and the connection position of the transverse plate portion 212 and the vertical side plate 22 has higher connection strength, and the inner wall of the avoidance gap 311 is smooth and has no sharp angle, thereby effectively avoiding the phenomenon of stress concentration.

In one embodiment, the distance between the junction of the straight line segment 311a and the outer side surface of the vertical side plate 22 and the bottom end surface of the vertical side plate 22 is L1, and L1 satisfies the relationship: 1.2 Xmin (S1, S2). Ltoreq.L1.ltoreq.1.5 Xmin (S1, S2), wherein S1 is the thickness of the vertical side plate 22, S2 is the thickness of the horizontal plate portion 212, so set up, make dodging the breach 311 and can dodge completely under the premise of bottom sand grip 212a guarantee the joint strength of intermediate connecting plate 31 and vertical side plate 22.

Further, the distance between the connection portion between the arc-shaped section 311b and the bottom surface of the lateral plate portion 212 and the bottom convex strip 212a is L2, and the relationship is satisfied by L2: 3mm is less than or equal to L2 is less than or equal to 5mm, so the arrangement is that the avoidance notch 311 can completely avoid the connection strength between the middle connecting plate 31 and the L-shaped plate 21 on the premise that the bottom convex strip 212a is completely avoided.

Specifically, referring to fig. 7, the avoidance gap 311 may be obtained by the following design method (for convenience of description, each of the following side lines is an edge profile of the transverse section of the plate body corresponding to each other):

the line BC parallel to the outer side edge of the bottom ridge 212a and having the same length is taken, the distance between the line BC and the outer side edge of the bottom ridge 212a is L3, l3=0.2×s2, the outer side edge of the vertical side plate 22 is downward and taken as an extension line intersecting the bottom side edge of the transverse plate 212 at a point a, the point a is shifted inward along the bottom side edge of the transverse plate 212 by a distance L2 to obtain a point M, the point a, the point B and the point C are taken as a circle O1, the point M is taken as a circle O2 concentric with the circle O1, the outer side edge of the vertical side plate 22 is taken as a point N, the point N and the top side edge of the transverse plate 212 are taken as a tangent to the circle O2, the tangent line ND is taken as a contour line of the transverse cross section of the straight line segment 311a of the relief notch 311, that is, the ND and DM is taken as a contour line of the transverse cross section of the arc segment 311B of the relief notch 311, that is taken as a contour line of the transverse cross section of the arc segment 311B of the relief notch.

In one embodiment, referring to fig. 5, the rear axle mounting plate 32 extends in the width direction of the roof panel 1 and is provided opposite to the lateral plate portion 212, the rear axle mounting plate 32 has an extension 321 extending outward beyond the bottom ridge 212a in the width direction of the roof panel 1, and the extension 321 is provided with a plurality of rear axle mounting holes arranged at intervals in the width direction of the roof panel 1.

It can be appreciated that, a plurality of rear axle mounting holes are used for supplying the bolt to pass respectively and cooperate with the nut in order to fix the installation rear axle, in this embodiment, offer a plurality of rear axle mounting holes in extension 321, and extension 321 surpasses bottom sand grip 212a towards the outside in the width direction of roof 1, so set up, in the in-process of rear axle installation, place the rear axle in the below of extension 321 and make the connecting hole on the rear axle align with a plurality of rear axle mounting holes one by one, because there is not the hindrance of bottom sand grip 212a in extension 321 top, a plurality of bolts all can wear the connecting hole on the rear axle of dress in corresponding rear axle mounting hole and enemy in proper order from the top of extension 321, through this, a plurality of corresponding nuts can be screwed and assembled in the bottom surface of rear axle, because rear axle below has sufficient operating space, when the assembly, the operating personnel can tighten a plurality of nuts one by one, so set up through the moment spanner, can improve the reliability of rear axle installation on rear axle mounting plate 32, and then improve the factor of safety.

In practical design, the lateral length of the extension section 321 may be extended by extending the lateral length of the rear axle mounting plate 32 so that the extension section 321 has a sufficient position to provide a plurality of rear axle mounting holes, or the lateral length of the extension section 321 may be relatively extended by reducing the lateral length of the bottom protruding strip 212a so that the extension section 321 has a sufficient position to provide a plurality of rear axle mounting holes.

In one embodiment, referring to fig. 6, the top plate 1 has a connecting section 11 extending outward in the width direction beyond the vertical side plate 22, and the top end of the intermediate connecting plate 31 is connected to the bottom surface of the connecting section 11, so that the intermediate connecting plate 31 can be simultaneously connected with the L-shaped plate 21, the vertical side plate 22 and the top plate 1, so that the connection strength between the rear axle mounting seat 3 and the support beam 2 is further improved, and the overall strength, the load bearing capacity and the safety factor of the frame are further improved greatly.

In one embodiment, referring to fig. 6, the outer edge of the top end of the intermediate connection plate 31 away from the vertical side plate 22 is flush with the outer end surface of the connection section 11, so that the connection strength of the top end of the intermediate connection plate 31 with the connection section 11 of the top plate 1 can be further improved.

Further, the midpoint of the connection line between the innermost edge point of the innermost rear axle mounting hole and the outermost edge point of the outermost rear axle mounting hole in the plurality of rear axle mounting holes is marked as a first reference point, the innermost edge point of the innermost rear axle mounting hole is marked as a second reference point, and the plane where the outer end face of the connecting section 11 is located between the first reference point and the second reference point in the width direction of the top plate 1.

The innermost edge point of the rear axle mounting hole is the point closest to the inner side on the circular edge of the rear axle mounting hole, and the outermost edge point of the rear axle mounting hole is the point closest to the outer side on the circular edge of the rear axle mounting hole.

The utility model also provides engineering machinery which comprises the frame, and the engineering machinery can be a wheel type excavator, a bulldozer and the like.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (10)

1. A vehicle frame, comprising:

a top plate (1);

a support beam (2) provided on the bottom surface of the top plate (1) and extending in the longitudinal direction of the top plate (1); and

rear axle mount pad (3), including intermediate junction board (31) and be used for supplying rear axle mounting board (32) of rear axle installation, intermediate junction board (31) connect in the lateral surface of supporting beam (2) and offer be used for dodging breach (311) of dodging bottom sand grip (212 a) of supporting beam (2), rear axle mounting board (32) connect in intermediate junction board (31) and be located the below of supporting beam (2).

2. The frame according to claim 1, wherein the support beam (2) includes an L-shaped plate (21) and a vertical side plate (22), a vertical plate portion (211) of the L-shaped plate (21) is vertically disposed and a top end is connected to a bottom surface of the top plate (1), the vertical plate portion (211) extends in a length direction of the top plate (1), a lateral plate portion (212) of the L-shaped plate (21) extends outward in a width direction of the top plate (1) from a bottom end of the vertical plate portion (211), the vertical side plate (22) is vertically disposed and extends in a length direction of the top plate (1), a top end of the vertical side plate (22) is connected to a bottom surface of the top plate (1), a bottom end of the vertical side plate (22) is connected to a top surface of the lateral plate portion (212), a portion of the lateral plate portion (212) that is beyond the vertical side plate (22) outward in the width direction of the top plate (1) is the bottom ridge (212 a),

the middle connecting plate (31) is provided with an L-shaped connecting port, the vertical side wall of the L-shaped connecting port is in matched connection with the outer side face of the vertical side plate (22), the transverse side wall of the L-shaped connecting port is in matched connection with the bottom face of the transverse plate (212), and the avoidance notch (311) is formed at the joint of the vertical side wall and the transverse side wall.

3. The frame according to claim 2, wherein the inner wall of the avoidance gap (311) has a straight line section (311 a) and an arc section (311 b), one end of the arc section (311 b) is connected with the bottom surface of the transverse plate portion (212) and is far away from the bottom raised line (212 a), the other end of the arc section (311 b) extends upward around the periphery of the bottom raised line (212 a), one end of the straight line section (311 a) is connected with the outer side surface of the vertical side plate (22), the other end of the straight line section (311 a) is connected with the other end of the arc section (311 b), and the straight line section (311 a) is tangent with the arc section (311 b).

4. A carriage according to claim 3, characterized in that the distance between the junction of the straight line segment (311 a) and the outer side surface of the vertical side plate (22) and the bottom end surface of the vertical side plate (22) is L1, said L1 satisfying the relation: 1.2 Xmin (S1, S2). Ltoreq.L1.ltoreq.1.5 Xmin (S1, S2), wherein S1 is the thickness of the vertical side plate (22) and S2 is the thickness of the lateral plate portion (212).

5. A vehicle frame according to claim 3, wherein the distance between the connection of the arc-shaped section (311 b) and the bottom surface of the transverse plate portion (212) and the bottom convex bar (212 a) is L2, and the L2 satisfies the relationship: l2 is more than or equal to 3mm and less than or equal to 5mm.

6. The vehicle frame according to claim 2, wherein the rear axle mounting plate (32) extends in the width direction of the roof panel (1) and is disposed opposite to the lateral plate portion (212), the rear axle mounting plate (32) has an extension section (321) that extends outward beyond the bottom convex strip (212 a) in the width direction of the roof panel (1), and the extension section (321) is provided with a plurality of rear axle mounting holes that are arranged at intervals in the width direction of the roof panel (1).

7. The frame according to claim 6, characterized in that the top plate (1) has a connecting section (11) that extends beyond the vertical side plate (22) toward the outside in the width direction, and the top end of the intermediate connecting plate (31) is connected to the bottom surface of the connecting section (11).

8. The frame according to claim 7, characterized in that the top end of the intermediate connection plate (31) is flush with the outer end face of the connection section (11) away from the outer edge of the vertical side plate (22).

9. The vehicle frame according to claim 8, characterized in that a midpoint of a line connecting an innermost edge point of the rear axle mounting hole located at an innermost side and an outermost edge point of the rear axle mounting hole located at an outermost side of the plurality of rear axle mounting holes is marked as a first reference point, an innermost edge point of the rear axle mounting hole located at an innermost side is marked as a second reference point, and a plane in which an outer end face of the connecting section (11) is located between the first reference point and the second reference point in a width direction of the roof panel (1).

10. A construction machine, characterized by comprising a frame according to any one of claims 1-9.

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