A modular vibration test bench tooling device suitable for use with a locomotive electrical cabinet

Abstract

This invention discloses a modular vibration test bench fixture for locomotive electrical cabinets, comprising a bottom connecting frame (1) and a vertical movable frame (2). The bottom connecting frame is detachably connected to the vibration test bench, and a bottom C-shaped beam is provided on the bottom connecting frame for detachable connection with the vertical movable frame. The vertical movable frame is located on the bottom connecting frame and includes a first connecting plate (21), a movable crossbeam (22), and a first C-shaped beam (23). The first connecting plate is provided with a first mounting hole (211) for connection and fixation with the bottom C-shaped beam. The bottom of the movable crossbeam is connected to the first connecting plate, and the first C-shaped beam is connected to the upper surface of the movable crossbeam. The C-shaped groove of the movable crossbeam faces upward for vertical fixation of the test specimen. This invention can realize the installation and fastening of specimens with different widths and depths.

Description

Technical Field

[0001] This invention relates to vibration testing fixtures for locomotive electrical cabinets in the field of rail transit, and in particular to a modular vibration testing bench fixture device suitable for locomotive electrical cabinets. Background Technology

[0002] International standard IEC 61373 specifies the requirements for random vibration and shock tests on mechanical, pneumatic, electrical, and electronic equipment or components installed on railway vehicles. During testing, all test specimens must be reliably fixed to the shock and vibration test bench using tooling devices.

[0003] In previous vibration tests, the tooling had the following problems:

[0004] (1) Before each test, tooling needs to be developed in a targeted manner based on the test sample, which increases the test cycle;

[0005] (2) The tooling device adopts an integral welded structure, which lacks flexibility and compatibility;

[0006] (3) The tooling was scrapped after each test, which increased the test cost.

[0007] Therefore, the aforementioned tooling and equipment no longer meet the requirements of social development and production.

[0008] Chinese patent CN216978305U discloses an adjustable fixture for battery pack vibration testing, comprising multiple support slide rails and multiple mounting slide rails. The mounting slide rails are mounted on the support slide rails, and through the support slide rails, mounting slide rails, and T-shaped nuts disposed within the slide rails, the structure allows for simultaneous adjustment of the mounting distance along both the width and length directions of the battery pack. Therefore, it is applicable to battery packs of different sizes, avoiding the hassle of frequently changing the fixture materials for different battery pack sizes. However, this solution still has the following drawbacks:

[0009] (1) Each support rail needs to be positioned and installed individually, which is a complicated process. Furthermore, the support rails are not connected as a whole, and the support strength of a single support rail determines the overall support strength.

[0010] (2) Both the support rails and the mounting rails require custom processing, resulting in high production costs;

[0011] (3) It is only suitable for use with vertically installed battery packs and is not suitable for use with most locomotive electrical cabinets (low voltage cabinet, high voltage cabinet, grid side cabinet, control battery cabinet, brake cabinet, signal cabinet, tool cabinet, etc.) that need to be installed horizontally and vertically at the same time.

[0012] (4) It cannot effectively expand the size of the test bench and cannot solve the industry pain point of installing and testing oversized locomotive electrical cabinets. Summary of the Invention

[0013] The technical problem to be solved by the present invention is to provide a modular vibration test bench fixture device that is flexible, highly compatible, structurally safe and reliable, and can be used to install locomotive electrical cabinets with different installation methods and different installation sizes through the same fixture, based on the installation structure characteristics of electrical cabinets in the electric locomotive industry.

[0014] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0015] A modular vibration test bench fixture for locomotive electrical cabinets includes a bottom connecting frame and a vertical movable frame, characterized by the following structural features:

[0016] The bottom connecting frame includes a bottom mounting plate, a bottom support crossbeam, a bottom support longitudinal beam, and a bottom C-shaped beam. The bottom mounting plate is provided with bottom mounting holes for fixing to the vibration test bench. The bottom support crossbeam and the bottom support longitudinal beam are connected in a crisscross pattern to form a bottom frame. The bottom C-shaped beam is connected to the upper surface of the bottom frame, and the C-shaped groove of the bottom C-shaped beam faces upward.

[0017] The vertical movable frame has at least one, and the vertical movable frame is mounted on the bottom connecting frame. The vertical movable frame includes a first connecting plate, a movable crossbeam, and a first C-shaped beam. The first connecting plate is provided with a first mounting hole for connecting and fixing with the bottom C-shaped beam. The bottom of the movable crossbeam is connected to the first connecting plate. The first C-shaped beam is connected to the upper surface of the movable crossbeam, and the C-shaped groove of the movable crossbeam opens upward for vertical fixing of the test specimen.

[0018] The first connecting bolt is slidably installed in the C-groove of the bottom C-shaped beam. The vertical movable frame is connected to the bottom C-shaped beam by the first connecting bolt and the first mounting hole through vertical fastening. The second connecting bolt is slidably installed in the C-groove of the first C-shaped beam. The test specimen is connected to the first C-shaped beam by the second connecting bolt and the test specimen through vertical fastening.

[0019] This invention employs two modules: a bottom connecting frame and a vertical movable frame. The vertical movable frame and the bottom connecting frame are positioned by a detachable connection between the first mounting hole and the connecting bolt located in the bottom C-shaped beam. This allows the installation position of the vertical movable frame on the bottom connecting frame to be adjustable, making the structure of this invention flexible, adaptable, highly compatible, and structurally safe and reliable. Locomotive electrical cabinets of different installation sizes can be installed using the same tooling, effectively shortening the testing cycle and reducing testing costs.

[0020] Preferably, the invention further includes a horizontal movable frame, which comprises a second connecting plate, a support beam, a second C-shaped beam, and a load-bearing beam. The second connecting plate has a second mounting hole for connection and fixation to the bottom C-shaped beam. The bottom of the support beam is connected to the second connecting plate, and the upper part of the support beam is connected to the second C-shaped beam. The C-shaped groove of the second C-shaped beam faces forward to achieve horizontal installation of the test specimen. A first connecting bolt is slidably installed in the C-shaped groove of the bottom C-shaped beam. The horizontal movable frame and the bottom C-shaped beam are connected by the first connecting bolt and the vertical fastening of the second mounting hole. A third connecting bolt is slidably installed in the C-shaped groove of the second C-shaped beam. The test specimen and the second C-shaped beam are connected by the third connecting bolt and the horizontal fastening of the test specimen. Thus, the present invention can achieve both vertical fixation and horizontal installation of the test specimen. Locomotive electrical cabinets with different installation methods and sizes can be installed using the same tooling, effectively shortening the testing cycle and reducing testing costs.

[0021] Preferably, the bottom mounting plate is located at the four edges of the bottom frame.

[0022] Preferably, the bottom mounting plate further includes a bent edge, which is fitted and connected to the bottom support crossbeam or the bottom support longitudinal beam.

[0023] Preferably, the bottom mounting plate, bottom support crossbeam, bottom support longitudinal beam, and bottom C-shaped beam are welded together as a single unit.

[0024] Preferably, the bottom surface of the first connecting plate is set as a first support surface, and the first support surface is aligned with the designed position of the first C-shaped beam on the bottom connecting frame.

[0025] Preferably, the bottom of the movable crossbeam is provided with a first notch for mounting the first connecting plate.

[0026] Preferably, the bottom surface of the second connecting plate is configured as a second support surface, and the second support surface is aligned with the designed position of the second C-shaped beam on the bottom connecting frame.

[0027] Preferably, the bottom of the support beam is provided with a second notch for mounting the second connecting plate.

[0028] Preferably, a load-bearing beam is provided at the front of the support beam, and a third notch for installing the second connecting plate is provided at the bottom of the load-bearing beam, and the second notch and the third notch are arranged on the same axis.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] (1) This invention adopts a modular design, with the bottom connecting frame, vertical movable frame, and horizontal movable frame each forming an independent module, connected by fasteners. For samples with different widths and depths, by adjusting the positioning of the vertical and horizontal movable frames, the installation and fastening of the sample's width within the range X and depth within the range Y can be achieved, such as... Figure 1 As shown.

[0031] (2) For any sample requiring vertical installation, a modular tooling combination of a bottom connecting frame and a vertical movable frame can be used to install and fix such samples on the vibration test bench, such as... Figure 5 As shown. The number of vertical movable frames can be increased or decreased according to the actual needs of the sample.

[0032] (3) For any sample requiring simultaneous horizontal and vertical installation, a modular tooling combination of a bottom connecting frame, a vertical movable frame, and a horizontal movable frame can be used to install and fix such samples on the vibration test bench, such as... Figure 6 As shown.

[0033] (4) The present invention features an ingenious structural design. It not only avoids encroaching on the original sample installation dimensions of the vibration test bench, but also effectively expands upon them, greatly solving the industry pain point that testing cannot be conducted if the sample size slightly exceeds the vibration test bench's dimensions. The vibration test bench has a length dimension of A0, the vertical and horizontal movable frames of the present invention have lengths of A1 (A1 > A0), the vibration test bench has a width dimension of B0, and the bottom C-shaped beam of the present invention has a length of B1 (B1 > B0), allowing the sample installation dimensions to be flexibly adjusted within the range of A1 and B1. Figure 5 , Figure 6 As shown.

[0034] (5) The tooling of this invention adopts a frame structure, which is stable and can be reused, effectively shortening the test cycle and reducing the test cost. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the bottom connecting frame.

[0038] Figure 3 This is a schematic diagram of the vertical movable frame.

[0039] Figure 4 This is a schematic diagram of the horizontal movable frame.

[0040] Figure 5 This is a schematic diagram of a modular tooling combination structure consisting of a bottom connecting frame and a vertical movable frame, where a is the front view, b is the side view, and c is the top view.

[0041] Figure 6 This is a schematic diagram of a modular tooling combination structure consisting of a bottom connecting frame, a vertical movable frame, and a horizontal movable frame. In the diagram, a is the front view, b is the side view, and c is the top view.

[0042] Figure 7 This is an application example diagram of the present invention used for vertically installed prototypes;

[0043] Figure 8 This is an application example diagram of the present invention for vertical and horizontal installation of a sample. Detailed Implementation

[0044] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0045] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] like Figure 1As shown, an embodiment of the modular vibration test bench tooling device of the present invention mainly includes a bottom connecting frame 1, a vertical movable frame 2, and a horizontal movable frame 3. For samples with different widths and depths, the installation and fastening of the sample within the range of X width and Y depth can be achieved by adjusting the positioning of the vertical movable frame 2 and the horizontal movable frame 3.

[0048] The bottom connecting frame 1 is located at the bottom of this device, and its main structure includes a bottom mounting plate 11, a bottom support crossbeam 12, a bottom support longitudinal beam 13, and a bottom C-shaped beam 14, as shown below. Figure 2 As shown, the bottom mounting plate 11, bottom support beam 12, bottom support longitudinal beam 13, and bottom C-shaped beam 14 are welded into an integrated frame structure to improve strength.

[0049] The bottom mounting plate 11 is located at the perimeter of the bottom connecting frame 1. Its main structure includes bottom mounting holes 111 and bent edges 112. The bottom mounting holes 111 are concentrically arranged with the mounting holes on the vibration test bench 4. Fasteners are used to connect and fix the bottom mounting holes 111 on the bottom mounting plate 11 to the mounting holes on the vibration test bench 4. The bent edges 112 reinforce the structure of the bottom mounting plate 11. The bottom support crossbeam 12 and bottom support longitudinal beam 13 are both steel pipe structures. The bottom support crossbeam 12 and bottom support longitudinal beam 13 are staggered and welded together, and spliced ​​with the bent edges 112 to form the bottom frame. The bottom C-shaped beam 14 is located at the upper part of the bottom connecting frame 1, with the C-shaped groove opening facing upwards. The lower part of the bottom C-shaped beam 14 is welded together with the upper part of the bottom support longitudinal beam 13, thereby transferring the installation force at the C-shaped groove opening to the entire bottom connecting frame 1.

[0050] The vertical movable frame 2 is located at the top of this device, and its main structure includes a first connecting plate 21, a movable crossbeam 22, and a first C-shaped beam 23, as shown below. Figure 3 As shown, the first connecting plate 21, the movable crossbeam 22, and the first C-shaped beam 23 are welded together as one unit.

[0051] The first connecting plate 21 is located at the lower part of the vertical movable frame 2. Its main structure includes a first mounting hole 211 and a first supporting surface 212. Fasteners are used to connect and fix the first mounting hole 211 on the vertical movable frame 2 to the bottom C-shaped beam 14 of the bottom connecting frame 1. The first supporting surface 212 is aligned with the designed position of the bottom C-shaped beam 14 on the bottom connecting frame 1. The movable crossbeam 22 is located in the middle of the vertical movable frame 2 and has a first notch 221 for positioning the first connecting plate 21. The first C-shaped beam 23 is located at the upper part of the vertical movable frame 2, with the C-shaped groove opening upwards for vertical fixing of the test specimen.

[0052] The horizontal movable frame 3 is located at the top of this device, and its main structure includes a second connecting plate 31, a support beam 32, a second C-shaped beam 33, and a load-bearing beam 34, as shown below. Figure 4 As shown.

[0053] The second connecting plate 31 is located at the lower part of the horizontal movable frame 3. Its main structure includes a second mounting hole 311 and a second support surface 312. Fasteners are used to fix the second mounting hole 311 on the horizontal movable frame 3 to the bottom C-shaped beam 14 of the bottom connecting frame 1. The second support surface 312 is aligned with the designed position of the bottom C-shaped beam 14 on the bottom connecting frame 1. The second support beam 32 has a second notch (not shown) for positioning the second connecting plate 31. A second C-shaped beam 33 is provided on the upper part of the support beam 32, providing support and positioning for the second C-shaped beam 33. A load-bearing beam 34 is provided at the front of the support beam 32, and the load-bearing beam 34 has a third notch 341 for positioning the second connecting plate 31. The second notch and the third notch 341 are coaxially aligned to facilitate the installation of the same second connecting plate 31 within both coaxially aligned notches. The C-shaped groove opening of the second C-shaped beam 33 on the horizontal movable frame 3 faces forward for horizontal installation of the sample.

[0054] like Figure 5 - Figure 8 As shown, the length of the vibration test bench is A0, the lengths of the vertical movable frame 2 and the horizontal movable frame 3 of the present invention are A1, and A1>A0, the width of the vibration test bench is B0, and the length of the bottom C-shaped beam of the present invention is B1, and B1>B0. This allows the installation dimensions of the test specimen of the present invention to be flexibly adjusted within the range of A1 and B1, so as to effectively expand the original installation dimensions of the vibration test bench 4, and greatly solve the industry pain point that the test specimen cannot be tested if its size slightly exceeds the vibration test bench.

[0055] When using this invention, for any sample requiring vertical installation, a modular tooling combination of a bottom connecting frame 1 and a vertical movable frame 2 can be used to install and fix such test samples 5 on the vibration test bench 4, as shown below. Figure 7 As shown; for any specimen requiring simultaneous horizontal and vertical installation, a modular tooling combination of bottom connecting frame 1 + vertical movable frame 2 + horizontal movable frame 3 can be used to install and fix such test specimen 5 on the vibration test bench 4, as shown. Figure 8 As shown.

[0056] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A modular vibration test bench fixture for locomotive electrical cabinets, comprising a bottom connecting frame (1) and a vertical movable frame (2), characterized in that: The bottom connecting frame (1) includes a bottom mounting plate (11), a bottom support crossbeam (12), a bottom support longitudinal beam (13), and a bottom C-shaped beam (14). The bottom mounting plate (11) is provided with bottom mounting holes (111) for fixing to the vibration test bench. The bottom support crossbeam (12) and the bottom support longitudinal beam (13) are connected in a crisscross pattern to form a bottom frame. The bottom C-shaped beam (14) is connected to the upper surface of the bottom frame, and the C-shaped groove of the bottom C-shaped beam is open upward. The vertical movable frame (2) has at least one, and the vertical movable frame is installed on the bottom connecting frame. The vertical movable frame includes a first connecting plate (21), a movable crossbeam (22), and a first C-shaped beam (23). The first connecting plate (21) is provided with a first mounting hole (211) for connecting and fixing with the bottom C-shaped beam. The bottom of the movable crossbeam (22) is connected to the first connecting plate (21). The first C-shaped beam (23) is connected to the upper surface of the movable crossbeam (22), and the C-shaped groove of the movable crossbeam (22) opens upward for vertical fixing of the test specimen. The first connecting bolt is slidably installed in the C-groove of the bottom C-beam (14). The vertical movable frame (2) and the bottom C-beam are connected by the first connecting bolt and the first mounting hole (211) through vertical fastening. The second connecting bolt is slidably installed in the C-groove of the first C-beam (23). The test specimen and the first C-beam (23) are connected by the second connecting bolt and the test specimen through vertical fastening. It also includes a horizontal movable frame (3), which includes a second connecting plate (31), a support beam (32), a second C-shaped beam (33), and a load-bearing beam (34). The second connecting plate (31) is provided with a second mounting hole (311) for connecting and fixing with the bottom C-shaped beam. The bottom of the support beam (32) is connected to the second connecting plate (31), and the upper part of the support beam (32) is connected to the second C-shaped beam (33). The C-shaped groove of the second C-shaped beam (33) faces forward to realize the horizontal installation of the sample. The horizontal movable frame (3) and the bottom C-shaped beam are connected by the first connecting bolt and the second mounting hole (311) through vertical fastening. The third connecting bolt is slidably installed in the C-shaped groove of the second C-shaped beam (33). The test specimen and the second C-shaped beam (33) are connected by the third connecting bolt and the test specimen through horizontal fastening.

2. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom mounting plate (11) is located at the four edges of the bottom frame.

3. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom mounting plate (11) also includes a bent edge (112), which is fitted and connected to the bottom support beam (12) or the bottom support longitudinal beam (13).

4. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom mounting plate (11), bottom support crossbeam (12), bottom support longitudinal beam (13), and bottom C-shaped beam (14) are welded together as one unit.

5. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom surface of the first connecting plate (21) is set as the first support surface (212), and the first support surface (212) is aligned with the design position of the first C-shaped beam (14) on the bottom connecting frame (1).

6. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom of the movable crossbeam (22) is provided with a first notch (221) for installing the first connecting plate (21).

7. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom surface of the second connecting plate (31) is set as the second support surface (312), and the second support surface (312) is aligned with the design position of the second C-shaped beam (14) on the bottom connecting frame (1).

8. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 1, characterized in that, The bottom of the support beam (32) is provided with a second notch for installing the second connecting plate (31).

9. The modular vibration test bench fixture for locomotive electrical cabinets according to claim 8, characterized in that, The support beam (32) is provided with a load-bearing beam (34) at the front. The bottom of the load-bearing beam (34) is provided with a third notch (341) for installing the second connecting plate (31), and the second notch and the third notch (341) are arranged on the same axis.

Images