Main valve support structure for engineering machinery

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a main valve support structure for engineering machinery, which comprises a front support plate and a rear support plate, the front support plate and the rear support plate are of flat plate structures, the tops of the front support plate and the rear support plate are connected with a mounting plate through a pair of vertical plates, two ends of the support plate extend to the outer sides of the vertical plates, and the mounting plate is used for mounting a main valve. Reinforcing ribs are connected between the vertical plate and the supporting plate so as to reduce stress concentration. The reinforcing ribs are welded between the vertical plate and the supporting plate, so that the connecting strength of the vertical plate and the supporting plate is improved, the stress at the connecting position is reduced, and the risk of welding seam cracking of the vertical plate and the supporting plate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a main valve bracket structure for engineering machinery. Background Art

[0002] The main valve bracket on a 50T excavator of a certain construction machinery is reinforced by bending the inner edge of the floor. However, this structure will cause stress to be concentrated at the connecting bolts or at the welding points of the vertical plates. For example, when the construction machinery continues to perform high-intensity crushing operations, the vibration of the entire vehicle will cause the main valve to vibrate irregularly, thereby causing stress concentration. Since the welding contact area between the vertical plate and the support plate is small, the weld is prone to cracking under high strength, causing greater vibration at the bolt connection, generating stress, and then causing the bolts to be cut off. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a main valve bracket structure for engineering machinery, which increases the connection strength of the vertical plate and the support plate by welding reinforcing ribs between the vertical plate and the support plate, thereby reducing the stress at the connection and reducing the risk of cracking in the welds of the vertical plate and the support plate.

[0004] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A main valve support structure for engineering machinery includes a front support plate and a rear support plate. The front support plate and the rear support plate are flat plate structures and the tops are connected to a mounting plate via a pair of vertical plates. Both ends of the support plates extend to the outside of the vertical plates. The mounting plate is used to install the main valve. Reinforcing ribs are connected between the vertical plates and the support plates to reduce stress concentration.

[0006] As a further implementation method, the front support plate and the rear support plate are arranged in parallel, and bolt holes are provided at both ends of the support plates.

[0007] As a further implementation, the front support plate is arranged higher than the rear support plate, and the vertical plate is L-shaped as a whole.

[0008] As a further implementation, the reinforcing ribs include first reinforcing ribs and second reinforcing ribs, the first reinforcing ribs are connected between the outer side of the vertical plate and the support plate, and the second reinforcing ribs are connected between the inner sides of the two vertical plates and the support plate.

[0009] As a further implementation, the second reinforcing rib includes a second front reinforcing rib and a second rear reinforcing rib, the second front reinforcing rib is arranged between the inner sides of the two vertical plates and the front supporting plate, and the second rear reinforcing rib is arranged between the inner sides of the two vertical plates and the rear supporting plate.

[0010] As a further implementation method, the second reinforcement rib is arranged in a U shape, and the two side edges of the second reinforcement rib are welded to the inner side of the vertical plate, and the bottom edge is welded to the top of the support plate; the connection between the bottom edge and the side edge is an arc-shaped transition, so that a triangular opening is formed between the arc-shaped transition and the inner side of the vertical plate and the support plate.

[0011] As a further implementation method, the first reinforcing rib is arranged in an arc shape, one end of which is welded to the end of the support plate, and the other end is welded to the outer side of the vertical plate.

[0012] As a further implementation, the first reinforcing rib includes a first front reinforcing rib and a first rear reinforcing rib, the first front reinforcing rib is arranged between the end of the front support plate and the outer side of the vertical plate, and the first rear reinforcing rib is arranged between the end of the rear support plate and the outer side of the vertical plate.

[0013] As a further implementation method, a triangular opening is formed between the arc-shaped transition of the first reinforcing rib and the outer side of the vertical plate and the support plate.

[0014] As a further implementation, the first reinforcing rib and the second reinforcing rib are located in the same plane.

[0015] The beneficial effects of the above utility model are as follows:

[0016] The utility model increases the connection strength of the vertical plate and the support plate by welding reinforcing ribs between the vertical plate and the support plate, thereby reducing the stress reduction at the connection and reducing the risk of cracking of the weld between the vertical plate and the support plate.

[0017] The front support plate and the rear support plate of the utility model are planar plate structures. After the support plate is changed into a flat plate, the welding area is increased by adding reinforcing ribs, the strength is improved, the welding is made firmer, and weld cracking is not easy to occur. The flat plate structure provides welding space for the additional reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0019] Figure 1 It is a schematic diagram of the overall structure of the main valve support structure for engineering machinery in the embodiment of the utility model;

[0020] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0021] Among them: 1. the first reinforcing rib, 2. the wire seat, 3. the vertical plate, 4. the second rear reinforcing rib, 5. the wire seat, 6. the second front reinforcing rib, 7. the rear support plate, 8. the front support plate, 9. the mounting plate, 11. the wire seat. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0023] Embodiment 1

[0024] In a typical implementation of the present invention, reference is made to Figure 1 As shown, a main valve support structure for engineering machinery includes a front support plate 8 and a rear support plate 7. The front support plate 8 and the rear support plate 7 are flat plate structures and the tops are connected to the mounting plate 9 through a pair of vertical plates 3. Reinforcing ribs are connected between the vertical plates and the support plates to reduce stress concentration.

[0025] like Figure 1 As shown, the front support plate 8 and the rear support plate 8 are both rectangular plate structures. The front support plate 8 and the rear support plate 7 are arranged in parallel and at different heights. The front support plate 8 is arranged higher than the rear support plate for the purpose of space considerations. The front support plate is directly connected to the platform, and the rear support plate is used to connect to a crossbeam on the platform. The connection position of the front support plate and the rear support plate is the existing technology.

[0026] The tops of the front support plate 8 and the rear support plate 7 are connected by a pair of vertical plates 3, and the two vertical plates 3 are arranged in parallel and in an L-shape. The top surfaces of the two vertical plates 3 are connected by a mounting plate 9, and the mounting plate 9 is used to install the main valve.

[0027] Both ends of the front support plate 8 and the rear support plate 7 extend to the outside of the vertical plate 3, so the length of the front support plate 8 and the rear support plate 7 is greater than the spacing between the vertical plates 3, and bolt holes are provided at both ends of the support plates extending to the outside of the vertical plates 3 to achieve bolt connection between the support plates and the platform.

[0028] The main valve bracket of the prior art is reinforced by bending the inner edge of the floor, and the front and rear support plates are bent to increase strength. However, this structure still causes stress to be concentrated at the connecting bolts or at the welding points of the vertical plates. Since the welding contact area between the vertical plates and the support plates is small, the welds are prone to cracking.

[0029] On this basis, the main valve bracket of this embodiment welds reinforcing ribs between the vertical plate and the support plate, which improves the strength of the main valve bracket, reduces stress concentration at the welding point between the vertical plate and the support plate, and reduces the risk of weld cracking.

[0030] like Figure 1 As shown, there are reinforcing ribs between the vertical plate and the support plate. The vertical plate 3 is L-shaped, and the bottom surfaces of the first ends of the two vertical plates are welded to the front support plate, wherein the first end surfaces are perpendicular to the horizontal plane, and the second end surfaces of the two vertical plates are parallel to the horizontal plane, and the second end surfaces are welded to the top surface of the rear support plate. The vertical plate and the support plate are welded vertically.

[0031] like Figure 1 As shown, the reinforcing ribs of this embodiment include a first reinforcing rib 1 and a second reinforcing rib, the first reinforcing rib 1 is connected between the outer side of the vertical plate and the support plate, and the second reinforcing rib is connected between the inner sides of the two vertical plates and the support plate.

[0032] The first reinforcing rib 1 is arranged in an arc shape, one end of which is welded to the end of the support plate, and the other end is welded to the outer side of the vertical plate. The first reinforcing rib includes two first front reinforcing ribs and two first rear reinforcing ribs.

[0033] The two first front reinforcing ribs are respectively welded between the two ends of the front support plate and the outer side of the vertical plate, and the first rear reinforcing rib is welded between the end of the rear support plate and the outer side of the vertical plate.

[0034] like Figure 1 As shown, the second reinforcing rib includes a second front reinforcing rib 6 and a second rear reinforcing rib 4. The second front reinforcing rib is welded between the inner sides of the two vertical plates and the top surface of the front support plate, and the second rear reinforcing rib 4 is welded between the inner sides of the two vertical plates and the top surface of the rear support plate.

[0035] The first reinforcing rib 1 and the second reinforcing rib on the same support plate are preferably located in the same plane. In other examples, the first reinforcing rib 1 and the second reinforcing rib are located in different planes.

[0036] The four first reinforcing ribs 1 of this embodiment are arranged in an arc shape in the middle, and the mating surfaces at both ends are planar structures for easy welding. A triangular opening is formed between the arc transition of the first reinforcing rib and the outer side of the vertical plate and the support plate.

[0037] like Figure 1 As shown, the second reinforcing rib is set in a U shape, and the second reinforcing rib includes two side edges and a bottom edge connecting the two side edges. The spacing between the two side edges is adapted to the spacing between the two vertical plates, which is convenient for welding. The two side edges of the second reinforcing rib are welded to the inner side of the vertical plate, and the bottom edge is welded to the top of the support plate; the connection between the bottom edge and the side edge is an arc transition, so that a triangular opening is formed between the arc transition and the inner side of the vertical plate and the support plate.

[0038] This embodiment increases the connection strength between the vertical plate and the support plate by welding the first reinforcement rib and the second reinforcement rib between the vertical plate and the support plate. On this basis, the arc-shaped reinforcement rib at the connection between the vertical plate and the support plate reduces the stress at the connection and reduces the risk of cracking of the weld between the vertical plate and the support plate.

[0039] like Figure 1 As shown, a wire seat 2 and a wire seat 11 are respectively provided on the side surface and the front end of the vertical plate, and a wire seat 5 is provided on the front side of the front support plate 8. The wire seat is provided to fix the wire harness, and the position of the wire seat can be specifically set according to actual conditions.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A main valve support structure for engineering machinery, characterized in that: It includes a front support plate and a rear support plate. The front support plate and the rear support plate are flat plate structures and the top is connected to the mounting plate through a pair of vertical plates. The two ends of the support plate extend to the outside of the vertical plate. The mounting plate is used to install the main valve. Reinforcing ribs are connected between the vertical plate and the support plate to reduce stress concentration.

2. A main valve support structure for engineering machinery according to claim 1, characterized in that: The front support plate and the rear support plate are arranged in parallel, and bolt holes are arranged at both ends of the support plates.

3. A main valve support structure for engineering machinery according to claim 2, characterized in that: The front support plate is arranged higher than the rear support plate, and the vertical plate is L-shaped as a whole.

4. The main valve support structure for engineering machinery according to claim 1, characterized in that: The reinforcing ribs include first reinforcing ribs and second reinforcing ribs, wherein the first reinforcing ribs are connected between the outer side of the vertical plate and the supporting plate, and the second reinforcing ribs are connected between the inner sides of the two vertical plates and the supporting plate.

5. A main valve support structure for engineering machinery according to claim 4, characterized in that: The second reinforcing ribs include second front reinforcing ribs and second rear reinforcing ribs. The second front reinforcing ribs are arranged between the inner sides of the two vertical plates and the front supporting plate, and the second rear reinforcing ribs are arranged between the inner sides of the two vertical plates and the rear supporting plate.

6. A main valve support structure for engineering machinery according to claim 4, characterized in that: The second reinforcing rib is arranged in a U shape, with both side edges of the second reinforcing rib welded to the inner side of the vertical plate, and the bottom edge welded to the top of the support plate; the connection between the bottom edge and the side edge is an arc-shaped transition, so that a triangular opening is formed between the arc-shaped transition and the inner side of the vertical plate and the support plate.

7. A main valve support structure for engineering machinery according to claim 4, characterized in that: The first reinforcing rib is arranged in an arc shape, one end of which is welded to the end of the supporting plate, and the other end is welded to the outer side of the vertical plate.

8. A main valve support structure for engineering machinery according to claim 7, characterized in that: The first reinforcing ribs include a first front reinforcing rib and a first rear reinforcing rib, the first front reinforcing rib is arranged between the end of the front support plate and the outer side of the vertical plate, and the first rear reinforcing rib is arranged between the end of the rear support plate and the outer side of the vertical plate.

9. The main valve support structure for engineering machinery according to claim 7, characterized in that: A triangular opening is formed between the arc-shaped transition of the first reinforcing rib and the outer side of the vertical plate and the supporting plate.

10. The main valve support structure for engineering machinery according to claim 4, characterized in that: The first reinforcing rib and the second reinforcing rib are located in the same plane.

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