Damping structure applied to high-voltage control cabinet and engineering machinery

Abstract

The utility model discloses a damping structure applied to a high-voltage control cabinet and engineering machinery. The damping structure comprises a damping assembly and a connecting assembly. The damping assembly is arranged between the bottom surface of the high-voltage control cabinet and a platform formed by side beams of a rotary platform on a vehicle and is used for damping the high-voltage control cabinet; the connecting assembly is arranged between the inner side face of the high-voltage control cabinet and a body of a rotary platform on a vehicle, is used for supporting and damping the high-voltage control cabinet and comprises a first rigid component, a second rigid component and at least one elastic component. The first rigid component is fixed on the inner side surface of the high-voltage control cabinet; the second rigid component is fixed on the main body of the revolving platform; at least one resilient member is fitted between the first rigid member and the second rigid member. According to the utility model, vibration and shaking impact of the high-voltage control cabinet can be reduced so as to effectively protect installation of the high-voltage control cabinet and components in the cabinet body.

Description

Technical Field

[0001] The utility model relates to a shock absorbing structure applied to a high-voltage control cabinet, belonging to the technical field of electric mining excavators. Background Art

[0002] With the current trend of electric new energy for super-large mining hydraulic excavators, the high-voltage control cabinet that must be configured on electric mining excavators is usually installed on the slewing platform skirt frame. The high-voltage control cabinet contains high-power or large-size transformers, reactors, high-voltage vacuum contactors, large-capacity batteries and other electrical components. The components on the excavator are compactly arranged, so the high-voltage control cabinet is usually high in a limited area and is fixed to the slewing platform skirt frame by rigid fasteners under the cabinet.

[0003] The traditional high-voltage control cabinet installation structure is as follows:

[0004] 1. The installation is a rigid connection. During the mine operation, the excavated material is very hard. During the excavation process, the impact load on the cabinet is large, and it is a short-term rigid impact, which can easily cause damage to the electrical components in the high-voltage control cabinet, resulting in maintenance costs and relatively large safety hazards.

[0005] 2. The high-voltage control cabinet has a high height, limited lateral width, a high center of gravity, large lateral shaking during operation, and a long force arm. It is very easy to cause the mounting bolts under the high-voltage control cabinet to break, or the plate under the cabinet to tear, resulting in economic losses caused by downtime and safety hazards to the people on the vehicle, and also greatly affecting the driving experience and comfort of the driver. Summary of the invention

[0006] In view of the deficiencies in the prior art, the utility model provides a shock absorbing structure applied to a high-voltage control cabinet, which can reduce the vibration and shaking impact of the high-voltage control cabinet to effectively protect the installation of the high-voltage electric cabinet and the components inside the cabinet.

[0007] The utility model is implemented according to the following technical solutions:

[0008] In the first aspect, the utility model provides a shock-absorbing structure applied to a high-voltage control cabinet, comprising a shock-absorbing assembly and a connecting assembly; the shock-absorbing assembly is arranged between the bottom surface of the high-voltage control cabinet and a platform formed by the side beams of the rotating platform on the vehicle, and is used to shock the high-voltage control cabinet; the connecting assembly is arranged between the inner side surface of the high-voltage control cabinet and the main body of the rotating platform on the vehicle, and is used to support and shock-absorb the high-voltage control cabinet, and the connecting assembly comprises a first rigid component, a second rigid component and at least one elastic component; the first rigid component is fixed on the inner side surface of the high-voltage control cabinet; the second rigid component is fixed on the main body of the rotating platform; at least one elastic component is assembled between the first rigid component and the second rigid component.

[0009] In some embodiments, the shock absorption assembly is composed of a plurality of elastic shock absorbers, each of which is vertically arranged. The top connection of the elastic shock absorber is fixed to the bottom surface of the high-voltage control cabinet, and the bottom connection of the elastic shock absorber is fixed to the platform.

[0010] In some embodiments, the platform of the side beam of the upper slewing platform of the vehicle is composed of the outer side beam of the slewing platform skirt welded together with a flatness within a preset range and the side welded beam of the slewing platform main body; a plurality of the elastic shock absorbers are installed on both the outer side beam of the slewing platform skirt and the side welded beam of the slewing platform main body.

[0011] In some embodiments, a row of the elastic shock absorbers arranged opposite to each other and evenly spaced along the longitudinal length direction of the beam are installed on both the outer side beam of the slewing platform skirt and the side welded beam of the slewing platform main body.

[0012] In some embodiments, the first rigid member is a flat plate with a plurality of internal threaded holes. After the flat plate is fitted to the inner side surface of the high-voltage control cabinet, they are welded together; the threaded holes on the flat plate fix at least one of the elastic members to the flat plate by cooperating with a plurality of rod-shaped members with external threads.

[0013] In some embodiments, the second rigid member includes:

[0014] A U-shaped plate, including a horizontal mounting plate and two opposite side plates; the bottom surfaces of the two side plates are inclined surfaces, which are welded together after being fitted to the inclined surfaces of the rear upper plate of the ear plate of the slewing platform main body.

[0015] An L-shaped bracket with diagonal braces. The horizontal part of the bracket is assembled on the horizontal mounting plate of the U-shaped plate. The vertical part of the bracket is arranged opposite to the first rigid member, and at least one through hole for assembling the elastic member is provided on the vertical part of the bracket.

[0016] In some embodiments, at least one coaxially arranged mounting hole is provided on both the horizontal part of the bracket and the horizontal mounting plate of the U-shaped plate. After the bolts are inserted into the vertically aligned mounting holes and tightened with nuts, the U-shaped plate and the bracket are fixed together.

[0017] In some embodiments, the elastic member is an elastic shock absorber. The elastic shock absorber is horizontally arranged. The front connection of the elastic shock absorber is fixed to the first rigid member, and the bottom connection of the elastic shock absorber is fixed to the second rigid member.

[0018] Second aspect, the present utility model provides a construction machinery, including a slewing platform and a high-voltage control cabinet, and the high-voltage control cabinet is fixed to the slewing platform through the above-mentioned shock absorption structure applied to the high-voltage control cabinet.

[0019] In some embodiments, the construction machinery includes an electric mining excavator.

[0020] Beneficial effects of the present utility model:

[0021] Compared with the traditional fixed design, the technical solution of the present utility model can effectively reduce the lateral sway of the high-voltage control cabinet, and the impact is an elastic impact. The shock absorbers fixedly connected to the side of the high-voltage control cabinet can be frequently overhauled and replaced, greatly improving the service life of the high-voltage control cabinet and the components inside the cabinet. Description of the drawings

[0022] The drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] In the drawings:

[0024] Figure 1 is an application schematic diagram of a shock absorption structure applied to a high-voltage control cabinet of the present utility model Figure 1 ;

[0025] Figure 2 is Figure 1 a partial enlarged view of;

[0026] Figure 3 is an application schematic diagram of a shock absorption structure applied to a high-voltage control cabinet of the present utility model Figure 2 ;

[0027] Figure 4 is an application schematic diagram of a shock absorption structure applied to a high-voltage control cabinet of the present utility model Figure 3 。

[0028] Reference signs in the drawings: 1, high-voltage control cabinet; 2, upper top plate; 3, U-shaped plate; 4, bracket; 5, flat plate; 6, elastic shock absorber; 7, outer side beam of the slewing platform skirt; 8, main side welding beam of the slewing platform; 9, elastic shock absorber.

[0029] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation mode

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, a shock absorption structure applied to a high-voltage control cabinet includes a shock absorption component and a connection component; the shock absorption component is arranged between the bottom surface of the high-voltage control cabinet and the platform formed by the side beams of the upper slewing platform of the vehicle, and is used for shock absorption of the high-voltage control cabinet; the connection component is arranged between the inner side surface of the high-voltage control cabinet and the main body of the upper slewing platform of the vehicle, and is used for supporting and shock absorption of the high-voltage control cabinet. The connection component includes a first rigid component, a second rigid component, and at least one elastic component; the first rigid component is fixed on the inner side surface of the high-voltage control cabinet; the second rigid component is fixed on the main body of the slewing platform; at least one elastic component is assembled between the first rigid component and the second rigid component. Through the above technical solution, the impact load generated during the operation is reduced and mitigated, and the swaying of the high-voltage electrical cabinet body in the lateral width direction is reduced, so as to effectively protect the installation of the high-voltage electrical cabinet and the components inside the cabinet body.

[0034] The following further describes the above shock absorption component.

[0035] As Figure 3 , Figure 4As shown in the figure, the shock absorption assembly consists of multiple elastic shock absorbers 9. Each elastic shock absorber 9 is vertically arranged. The top connection of the elastic shock absorber 9 is fixed to the bottom surface of the high-voltage control cabinet, and the bottom connection of the elastic shock absorber 9 is fixed to the platform.

[0036] For a further solution, continue to refer to Figure 3 , Figure 4 As shown in the figure, the platform of the side beam of the upper slewing platform of the vehicle is composed of the outer side beam 7 of the slewing platform skirt and the side welding beam 8 of the slewing platform main body, which are welded together and the overall flatness is within a preset range; a plurality of elastic shock absorbers 9 are installed on both the outer side beam 7 of the slewing platform skirt and the side welding beam 8 of the slewing platform main body.

[0037] In a preferred solution, continue to refer to Figure 3 , Figure 4 As shown in the figure, a row of elastic shock absorbers 9 that are opposed to each other and evenly spaced along the longitudinal length direction of the beam are installed on both the outer side beam 7 of the slewing platform skirt and the side welding beam 8 of the slewing platform main body, effectively reducing the overall shaking of the cabinet body, thereby reducing the shaking of the components in the electric control cabinet, and effectively protecting the electrical components in the high-voltage electrical cabinet.

[0038] It should be noted that for the installation positions of several rows of parallel elastic shock absorbers 9 inside and outside the high-voltage electrical cabinet, the outer row is installed on the outer side beam 7 of the slewing platform skirt, and the inner row is installed on the side welding beam 8 of the slewing platform main body. The reason for choosing to install the elastic shock absorbers 9 on these two parallel installation beams is that after the slewing platform main body and the skirt are welded and produced, they are an integral body. During the manufacturing process of the two beams, the flatness of the upper surfaces of the two beams can be ensured within a certain range through machining or adding tooling supports, so that the entire cabinet body itself will not produce large tilts and torsions after installing the elastic shock absorbers and the high-voltage electrical cabinet. The integrity is strong and the fixation is firm and coordinated. Such an installation and arrangement method is stable, and it can more effectively convert the large stiffness and short-time impact during the operation of the mining excavator into a relatively gentle impact, and increase the overall service life of the bottom plate of the high-voltage control cabinet.

[0039] The above-mentioned first rigid component, second rigid component and elastic component will be further described below.

[0040] As Figure 1 , Figure 2 As shown in the figure, the first rigid component is a flat plate 5 with multiple internal threaded holes. After the flat plate 5 is fitted to the inner side of the high-voltage control cabinet, it is welded together; the threaded holes on the flat plate 5 are used to fix at least one elastic component to the flat plate 5 by cooperating with multiple rod-shaped components with external threads (preferably bolts).

[0041] As Figure 1 , Figure 2As shown, the second rigid component includes a U-shaped plate 3 and a bracket 4 with L-shaped stay bars; the U-shaped plate 3 includes a horizontal mounting plate and two opposed side plates; the bottom surfaces of the two side plates are inclined surfaces, which are welded together after being fitted to the inclined surfaces of the rear upper plate of the ear plate of the slewing platform body. This position is a partial box structure, which is more stable and stronger than ordinary structures and is not easily damaged by pulling; the horizontal part of the bracket 4 is assembled on the horizontal mounting plate of the U-shaped plate 3, the vertical part of the bracket 4 is arranged opposite to the flat plate 5, and at least one through hole for assembling an elastic component is provided on the vertical part of the bracket 4.

[0042] For a further solution, continue to refer to Figure 1 、 Figure 2 As shown, at least one coaxially arranged mounting hole is provided on both the horizontal part of the bracket 4 and the horizontal mounting plate of the U-shaped plate 3. After the bolts are inserted into the vertically aligned mounting holes and tightened with nuts, the U-shaped plate 3 and the bracket 4 are fixed together.

[0043] As Figure 1 、 Figure 2 As shown, the elastic component is an elastic shock absorber 6. The elastic shock absorber 6 is arranged horizontally. The front connection part of the elastic shock absorber 6 is fixed to the flat plate 5, and the bottom connection part of the elastic shock absorber 6 is fixed to the bracket 4.

[0044] It should be noted that the connection component has a simple structure, is convenient to observe daily, and is convenient to operate and replace; a group of two or more horizontally arranged elastic shock absorbers 6 are installed between the inner side of the high-voltage control cabinet and the slewing platform body, which plays a supporting role for the high-voltage control cabinet body, reduces the possible shaking amount of the high-voltage control cabinet body due to its high height, high center of gravity and small horizontal width, and the elastic shock absorber 6 can reduce the rigid impact to a gentle elastic impact.

[0045] In summary, the present utility model provides a shock-absorbing structure applied to a high-voltage control cabinet. Two rows of elastic shock absorbers are arranged in parallel below the cabinet body of the high-voltage control cabinet. One side is installed on the outer side beam of the skirt of the slewing platform, and the other side is installed on the side welding beam of the main body of the slewing platform. The elastic shock absorbers fix the main beam of the slewing platform body and the side beam of the skirt, with stable installation and high installation strength. Moreover, they can effectively convert the large stiffness and short-time impact during the operation of the mining excavator into a relatively gentle impact, effectively protecting the electrical components in the high-voltage control cabinet. A group of two or more horizontally arranged elastic shock absorbers are added between the inner side of the high-voltage control cabinet and the main body of the slewing platform. The specific implementation method is as follows: A U-shaped plate with a horizontal upper plane and an installation seat is welded on the upper roof behind the ear plate of the main body of the slewing platform. Depending on the main body of the slewing platform, the installation is stable and has higher strength. A flat plate with internal threads is welded on the inner side of the high-voltage control cabinet. The elastic shock absorbers are arranged on the inner side of the cabinet body and are rigidly fastened to the upper roof behind the ear plate of the main body of the slewing platform. Compared with the traditional fixed design, the technical solution of the present utility model can effectively reduce the lateral sway of the high-voltage control cabinet, and the impact is an elastic impact. The shock absorbers fixedly connected to the side of the high-voltage control cabinet can be frequently overhauled and replaced, greatly improving the service life of the high-voltage control cabinet and the internal components of the cabinet body.

[0046] The construction machinery provided by the present utility model will be described below. The construction machinery described below can be mutually corresponding and referred to the shock-absorbing structure described above.

[0047] A construction machinery provided by the present utility model includes a slewing platform and a high-voltage control cabinet. The high-voltage control cabinet is fixed to the slewing platform through the above shock-absorbing structure.

[0048] The beneficial effects achieved by the construction machinery provided by the present utility model are consistent with those achieved by the shock-absorbing structure provided by the present utility model, so they will not be elaborated here.

[0049] It should be noted that the above construction machinery can be an electric mining excavator.

[0050] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0051] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means being within the protection scope of the present utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0052] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A shock absorbing structure applied to a high voltage control cabinet, characterized in that: include: A shock absorbing assembly is arranged between the bottom surface of the high-voltage control cabinet and the platform formed by the side beams of the rotating platform on the vehicle, and is used to absorb shock to the high-voltage control cabinet; The connecting assembly is arranged between the inner side of the high-voltage control cabinet and the main body of the rotating platform on the vehicle, and is used to support and dampen the high-voltage control cabinet. The connecting assembly includes: A first rigid component, fixed on the inner side of the high-voltage control cabinet; A second rigid component is fixed on the main body of the rotary platform; At least one elastic component is assembled between the first rigid component and the second rigid component.

2. The shock absorbing structure applied to a high-voltage control cabinet according to claim 1 is characterized in that: The shock absorbing assembly is composed of a plurality of elastic shock absorbers, each of which is arranged vertically, the top connection of the elastic shock absorber is fixed to the bottom surface of the high-voltage control cabinet, and the bottom connection of the elastic shock absorber is fixed to the platform.

3. The shock absorbing structure applied to a high-voltage control cabinet according to claim 2 is characterized in that: The side beam of the rotating platform on the vehicle is composed of an outer side beam of the rotating platform skirt frame and a welding beam on the side of the rotating platform body, which are welded together and have an overall flatness within a preset range; A plurality of elastic shock absorbers are installed on the outer side beams of the revolving platform skirt frame and the welding beams on the side of the revolving platform body.

4. The shock absorbing structure applied to a high-voltage control cabinet according to claim 3 is characterized in that: A row of elastic shock absorbers are installed on the outer side beams of the revolving platform skirt frame and the welding beams on the side of the revolving platform body. The elastic shock absorbers are opposed to each other and evenly distributed along the longitudinal length direction of the beams.

5. The shock absorbing structure applied to a high-voltage control cabinet according to claim 1 is characterized in that: The first rigid component is a flat plate with a plurality of internal threaded holes, and the flat plate is welded to the inner side surface of the high-voltage control cabinet after being attached to the plate; The threaded holes on the plate are matched with a plurality of rod-shaped components with external threads to fix at least one of the elastic components on the plate.

6. The shock absorbing structure applied to a high-voltage control cabinet according to claim 1, characterized in that: The second rigid component comprises: The U-shaped plate includes a horizontal mounting plate and two side plates facing each other; the bottom surfaces of the two side plates are inclined surfaces, which are welded together with the inclined surfaces of the top plates on the rear side of the ear plates of the rotary platform body; An L-shaped bracket with oblique tie bars, the horizontal portion of the bracket is mounted on the horizontal mounting plate of the U-shaped plate, the vertical portion of the bracket is arranged opposite to the first rigid component, and the vertical portion of the bracket is provided with at least one through hole for mounting the elastic component.

7. The shock absorbing structure applied to a high-voltage control cabinet according to claim 6 is characterized in that: The horizontal part of the bracket and the horizontal mounting plate of the U-shaped plate are both provided with at least one mounting hole arranged coaxially, and the U-shaped plate and the bracket are fixed together by fastening with nuts after the bolts are inserted into the mounting holes aligned up and down.

8. The shock absorbing structure applied to a high-voltage control cabinet according to claim 1 is characterized in that: The elastic component is an elastic shock absorber, which is arranged transversely, a front connection of the elastic shock absorber is fixed to the first rigid component, and a bottom connection of the elastic shock absorber is fixed to the second rigid component.

9. An engineering machine, comprising a rotary platform and a high-voltage control cabinet, characterized in that: The high-voltage control cabinet is fixed together with the rotary platform by a shock-absorbing structure applied to a high-voltage control cabinet as described in any one of claims 1 to 8.

10. The engineering machine according to claim 9, characterized in that: The engineering machinery includes an electric mining excavator.

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