Support assembly for engineering machinery and engineering machinery comprising same

Abstract

The utility model relates to a support assembly for engineering machinery and the engineering machinery comprising the support assembly. The support assembly comprises a first support and a second support. The first bracket is configured to mount a heat insulation member for isolating heat dissipation of an engine of the engineering machinery; the second bracket is arranged on one side of the first bracket and is configured to mount a covering component of the engineering machinery; the support assembly further comprises a connecting support, the connecting support is connected with the first support and the second support, and the connecting support is constructed into an integrated piece. According to the support assembly, the first support and the second support are connected through the connecting support so as to strengthen the first support, the number of connecting pieces and the number of welding points are reduced through the integrated connecting support, and the probability of failure of the welding points is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of parts of engineering machinery, in particular to a bracket assembly used for engineering machinery and engineering machinery comprising the bracket assembly. Background Art

[0002] Engineering machinery is usually equipped with a variety of brackets with different functions, such as a bracket for supporting a firewall (which is arranged on one side of the engine to isolate the engine from surrounding components such as valve components to prevent the heat emitted by the engine from affecting the surrounding components), and a bracket for supporting a door panel arranged on the rear side of the cab for shielding equipment such as hydraulic systems and air-conditioning systems (i.e., a door panel bracket on the rear side of the cab).

[0003] The brackets usually used to support the firewall cannot be provided with enough supporting structures due to space limitations, resulting in low strength, low vibration frequency and large amplitude. In the prior art, the firewall bracket is usually connected to other parts of the engineering machinery, such as the above-mentioned door panel bracket, through multiple small welded structures to increase its strength, but such a solution will produce too many welding points. During the long-term operation or driving of the engineering machinery, some welding points will fail, affecting the connection strength and the strength of the firewall bracket. Moreover, due to the different strengths of these brackets, the vibration frequencies of the engineering machinery when driving or operating are also different. The connection structure used to connect these different brackets is prone to stress concentration due to the different vibration frequencies of the two parts connected, resulting in excessive internal stress and reduced life. Therefore, a connection structure that can balance the vibration frequencies of the two brackets and improve its own internal stress conditions is needed. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above problems and / or other problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, according to one aspect of the utility model, a bracket assembly for engineering machinery is provided, the bracket assembly comprising a first bracket and a second bracket. The first bracket is configured to be suitable for installing a heat insulating member for isolating the heat dissipation of the engine of the engineering machinery; the second bracket is arranged on one side of the first bracket and is configured to be suitable for installing a covering member of the engineering machinery; wherein the bracket assembly further comprises a connecting bracket, the connecting bracket connecting the first bracket and the second bracket, and the connecting bracket is configured as an integral part.

[0006] According to an example of the present invention, the strength of the second bracket is higher than the strength of the first bracket, and / or the vibration frequency of the second bracket is higher than the vibration frequency of the first bracket.

[0007] According to an example of the present utility model, the connecting bracket includes a bracket body, and at least one opening is formed on the bracket body.

[0008] According to an example of the present utility model, the connecting bracket includes a bracket body, and the bracket body is configured as a hollow structure.

[0009] According to an example of the present invention, the covering member includes a door panel located at the rear side of the cab of the engineering machinery.

[0010] According to an example of the present invention, the first end of the connecting bracket is welded to the first bracket, and the second end of the connecting bracket opposite to the first end is configured to be connected to the second bracket via a fastener.

[0011] According to an example of the present utility model, the connecting bracket includes a bracket body, the bracket body has a first edge portion at the first end, and the connecting bracket also includes a first connecting portion extending perpendicular to the bracket body at the first edge portion and welded to the first bracket.

[0012] According to an example of the present invention, the bracket body further has a second edge portion on one side of the first edge portion, and the connecting bracket further includes a second connecting portion extending perpendicularly to the bracket body at the second edge portion.

[0013] According to an example of the present invention, a pressure relief hole is formed on the bracket body at a junction of the first connecting portion and the second connecting portion.

[0014] According to another aspect of the present invention, a construction machine is provided. The construction machine includes a bracket assembly according to the above examples.

[0015] The bracket assembly of the utility model connects a first bracket of smaller strength (lower vibration frequency, larger vibration amplitude) to a second bracket of larger strength (higher vibration frequency, smaller vibration amplitude) through a connecting bracket, thereby enhancing the strength of the first bracket, balancing the vibration amplitudes of the first bracket and the second bracket, and reducing the number of connecting parts and the number of welding points through the connecting bracket constructed as an integral part, thereby reducing the probability of welding point failure. Furthermore, at least one opening is provided in the bracket body of the connecting bracket to form a hollow structure, which is conducive to reducing the rigidity of the connecting bracket, thereby reducing the internal stress of the connecting bracket, enhancing its fatigue resistance, and improving the life of the connecting bracket. Moreover, the connecting bracket is fixed to the first bracket by welding at the position of the overlapping part of the two, and is fixed to the second bracket by a threaded fastener at the other end, which is conducive to further improving the stress condition of the connecting bracket. In addition, a pressure relief hole is provided at the junction position of the bracket body, the first connecting part and the third connecting part, which can improve the stress concentration of the connecting bracket as a bending part at the junction position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features and advantages of the present invention will be clearly understood through the detailed description provided below with reference to the accompanying drawings. It should be understood that the following drawings are merely schematic and not necessarily drawn to scale, and thus cannot be regarded as limiting the present invention, wherein:

[0017] Figure 1 A perspective view of a bracket assembly for a construction machine according to an exemplary embodiment of the present utility model is shown, wherein a portion of components connected to the bracket assembly is shown.

[0018] Figure 2 Show Figure 1 A perspective view of the bracket assembly is shown.

[0019] Figure 3 Show Figure 2 A perspective view of a connecting bracket in a bracket assembly is shown.

[0020] Figure 4 Show Figure 3 An enlarged view of point A of the connecting bracket is shown.

[0021] Description of reference numerals:

[0022] 1. First bracket; 2. Second bracket; 21. First part; 22. Second part; 3. Connecting bracket; 31. Bracket body; 311. Opening; 312. First edge portion; 313. Second edge portion; 32. First connecting portion; 33. Second connecting portion; 34. Pressure relief hole; 35. Connecting portion; 351. First plate portion; 352. Second plate portion; 36. Connecting hole; 4. Fastener. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described below with reference to the accompanying drawings. In the following description, many specific details are set forth so that those skilled in the art can more fully understand and implement the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, it is contemplated that any combination of the features and elements described below may be used to implement the present invention, regardless of whether they relate to different embodiments.

[0024] In the following, terms such as "first", "second", etc. are used to describe the elements of the present application. These terms are only used to distinguish the various elements, and are not used to limit the order or number of these elements. The terms "including" and "having" are used to express an open-ended inclusive meaning, and mean that there may be additional elements / components in addition to the listed elements / components.

[0025] Figure 1-4 FIG. 1 shows a support assembly for engineering machinery according to an embodiment of the utility model. Figure 2 As shown, the bracket assembly according to this embodiment may include a first bracket 1, a second bracket 2 and a connecting bracket 3. In this specific embodiment, the first bracket 1 is suitable for installing a heat-insulating member (also called a firewall) for isolating the heat dissipation of the engine of the engineering machinery. The second bracket 2 is suitable for installing a covering member of the engineering machinery (for example, a door panel on the rear side of the cab for shielding equipment such as hydraulic components, including a top panel and side panels, Figure 1 Only the top plate 6 is shown in the figure). The first bracket usually used to support the firewall is located close to the engine, and due to limited space, it is not possible to set up enough supporting structures, resulting in low strength of the first bracket. However, since the second bracket 2 used to install the covering member is relatively far away from the engine, hydraulic pipelines and other components and is relatively located on the outside of the engineering machinery, there is more space to set up the supporting structure, so the second bracket 2 has higher strength. In an embodiment of the utility model, the first bracket 1 is connected to the second bracket 2 by a connecting bracket 3 to improve the strength and stability of the first bracket 1. Moreover, the connecting bracket 3 is constructed as an integral part, thereby reducing the number of structural parts used to connect the first bracket 1 and the second bracket 2, thereby avoiding the problem of excessive welding points and failure points between multiple small structural parts when connecting the two brackets with multiple small structural parts, thereby improving the connection strength and reliability.

[0026] exist Figure 1The figure shows a heat insulating member 5 (e.g., a heat insulating board, also called a firewall) fixed to the first bracket 1, and a covering member connected to the second bracket 2 (only the top plate 6 is shown in the figure, but not the side plates). The second bracket 2 can be a frame structure that is approximately rectangular. By installing the heat insulating member on the first bracket 1 and the covering member on the frame of the second bracket 2, the installation stability of the heat insulating member and the covering member can be increased. Figure 2 For the sake of simplicity, only the parts of the first bracket 1 and the second bracket 2 related to the connecting bracket 3 are shown.

[0027] In this embodiment, the strength of the second bracket 2 is higher than that of the first bracket 1, and / or the vibration frequency of the second bracket 2 is higher than that of the first bracket 1, and / or the vibration amplitude of the first bracket 1 is greater than that of the second bracket 2. The first bracket 1 and the second bracket 2 are connected by the connecting bracket 3, so that the vibration amplitude of the first bracket 1 is reduced and the strength and stability of the first bracket 1 are improved.

[0028] Specifically, the connecting bracket 3 includes a bracket body 31, and at least one opening 311 is formed on the bracket body 31, thereby forming a hollow structure. The number of the openings 311 can be one or more than two. Figure 3 It is shown that two openings 311 with larger areas are formed on the bracket body 31, thereby reducing the structural stiffness of the connecting bracket 3. Therefore, when a first bracket 1 with a larger vibration amplitude is connected to one end thereof and a second bracket 2 with a smaller vibration amplitude is connected to the other end thereof, it can still have smaller internal stress, thereby avoiding problems such as stress concentration and short life caused by excessive internal stress, and improving the service life of the entire connecting bracket 3.

[0029] like Figure 1 and Figure 2 As shown, the connecting bracket 3 has a first end close to the first bracket 1 and a second end close to the second bracket 2 and opposite to the first end. The first end is connected to the first bracket 1 by welding, and the second end is connected to the second bracket 2 by a fastener 4 (such as a bolt and nut, etc.).

[0030] The specific structure of the connecting bracket 3 can be referred to Figure 3 As shown, the bracket body 31 has a first edge portion 312 at the first end of the connecting bracket 3, and the connecting bracket 3 also includes a first connecting portion 32 extending downward perpendicularly from the bracket body 31 at the first edge portion 312. The first connecting portion 32 can be a flat plate structure, such as Figure 2 As shown, the first bracket 1 may be L-shaped and also have a plate-like structure, so that the first connecting portion 32 and the first bracket 1 may have an overlapping portion, and welding the two at the overlapping portion is beneficial to increase the contact surface between the two (i.e., the weld length), thereby increasing the connection strength between the two and reducing the failure probability of the welding point.

[0031] Optionally, the bracket body 31 further has a second edge portion 313 on one side of the first edge portion 312 thereof, and the connecting bracket further comprises a second connecting portion 33 extending downwardly perpendicularly from the bracket body 31 at the second edge portion 313. The second connecting portion 33 can be used to be directly or indirectly connected to the heat insulating member 5 to enhance the stability of the connecting bracket 3 and the connection strength to the first bracket 1 and the second bracket 2.

[0032] Figure 4 A partial enlarged view of the connection bracket 3 at the junction of the bracket body 31, the first connection part 32 and the second connection part 33 is also shown. Exemplarily, the first connection part 32 and the second connection part 33 can be formed by bending downward from the bracket body 31. A pressure relief hole 34 is formed on the bracket body 31 at the junction of the first connection part 32 and the second connection part 33, thereby improving the stress concentration at the junction of the bracket body 31, the first connection part 32 and the second connection part 33.

[0033] like Figure 3 As shown, the connecting bracket 3 may further include a connecting portion 35 extending from the bracket body 31 toward the second bracket 2. In order to increase the area of ​​the installation overlap surface between the connecting bracket 3 and the second bracket 2, the connecting portion 35 may include a first plate portion 351 extending along a first direction and a second plate portion 352 extending along a second direction perpendicular to the first direction. Figure 2 The second bracket 2 shown also has a first portion 21 extending in the first direction and a second portion 22 extending in the second direction. One or more connecting holes 36 may be provided on the first plate portion 351 and the second plate portion 352 as required, and correspondingly, corresponding numbers of mounting holes (not shown) are provided on the first portion 21 and the second portion 22 of the second bracket 2. The first plate portion 351 and the first portion 21 are fixed, and the second plate portion 352 and the second portion 22 are fixed by fasteners 4 passing through the connecting holes 36 and the corresponding mounting holes.

[0034] The utility model also provides an engineering machine including the bracket assembly. Due to the use of the bracket assembly, the engineering machine has related parts having excellent stress performance and longer service life, and its parts such as firewalls have higher installation stability.

[0035] Industrial Applicability

[0036] The bracket assembly according to the utility model is particularly suitable for engineering machinery, such as excavators, graders, bulldozers, etc.

[0037] The strength of the first bracket 1 suitable for installing a heat-insulating member for isolating the heat dissipation of the engine of the engineering machinery is smaller than the strength of the second bracket 2 configured to be suitable for installing the covering member of the engineering machinery. Therefore, in the prior art, a plurality of small welded structures are usually used to connect the first bracket 1 to increase its strength. Compared with the prior art, the bracket assembly of the utility model connects the first bracket 1 of smaller strength (and / or larger vibration amplitude) with the second bracket 2 of larger strength (and / or smaller vibration amplitude) through the connecting bracket 3, thereby enhancing the strength of the first bracket 1, balancing the vibration amplitudes of the first bracket 1 and the second bracket 2, and reducing the number of connecting structural parts and the number of welding points through the connecting bracket 3 configured as an integral part, thereby reducing the probability of welding point failure.

[0038] Secondly, the support body 31 of the connecting support 3 is configured as a hollow structure by providing at least one opening 311 thereon, which is conducive to reducing the rigidity of the connecting support 3, thereby reducing the internal stress of the connecting support 3, enhancing its fatigue resistance, and increasing its life. As an example, after experimental testing, the life is increased from 1743h to 999999h.

[0039] Furthermore, the connecting bracket 3 is fixed to the first bracket 1 at the overlapping portion thereof through welding via the first connecting portion 32 , and is fixed to the second bracket 2 via the fastener 4 , which is beneficial to further improve the stress condition of the connecting bracket 3 .

[0040] Furthermore, a pressure relief hole is provided at the junction of the bracket body 31 , the first connection portion 32 and the third connection portion 33 , so as to improve the stress concentration of the connection bracket 3 at this position.

[0041] For those skilled in the art, various modifications and variations may be made to the embodiments disclosed above without departing from the scope or spirit of the utility model. Other embodiments of the utility model will be apparent to those skilled in the art from the practice of the utility model disclosed in this specification. This specification and the examples disclosed therein should be considered to be illustrative only, and the true scope of the utility model is specified by the appended claims and their equivalents.

Claims

1. A bracket assembly for engineering machinery, characterized in that: The bracket assembly comprises: A first bracket (1), the first bracket (1) being configured to be suitable for mounting a heat insulating member for isolating heat dissipation of an engine of the engineering machine; and a second bracket (2), the second bracket (2) being arranged on one side of the first bracket (1) and being configured to be suitable for mounting a covering member of the engineering machinery; The support assembly further comprises a connecting support (3), wherein the connecting support (3) connects the first support (1) and the second support (2), and the connecting support (3) is constructed as an integral part.

2. The bracket assembly according to claim 1, characterized in that: The strength of the second bracket (2) is higher than the strength of the first bracket (1), and / or the vibration frequency of the second bracket (2) is higher than the vibration frequency of the first bracket (1).

3. The bracket assembly according to claim 2, characterized in that: The connecting bracket comprises a bracket body (31), and at least one opening (311) is formed on the bracket body (31).

4. The bracket assembly according to claim 2, characterized in that: The connecting bracket (3) comprises a bracket body (31), and the bracket body (31) is configured as a hollow structure.

5. The bracket assembly according to claim 2, characterized in that: The covering member includes a door panel located at a rear side of a cab of the engineering machine.

6. The bracket assembly according to any one of claims 1 to 5, characterized in that: The first end of the connecting bracket (3) is welded to the first bracket (1), and the second end of the connecting bracket (3) opposite to the first end is configured to be connected to the second bracket (2) via a fastener (4).

7. The bracket assembly according to claim 6, characterized in that: The connecting bracket (3) comprises a bracket body (31), wherein the bracket body (31) has a first edge portion (312) at the first end portion, and the connecting bracket (3) further comprises a first connecting portion (32) extending perpendicularly to the bracket body (31) at the first edge portion (312) and welded to the first bracket (1).

8. The bracket assembly according to claim 7, characterized in that: The bracket body (31) also has a second edge portion (313) on one side of its first edge portion (312), and the connecting bracket (3) also includes a second connecting portion (33) extending perpendicularly to the bracket body (31) at the second edge portion (313).

9. The bracket assembly according to claim 8, characterized in that: A pressure relief hole (34) is formed on the bracket body (31) at the junction of the first connecting portion (32) and the second connecting portion (33).

10. An engineering machine, characterized in that: The construction machine comprises a bracket assembly according to any one of claims 1 to 9.

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