CN115046782A - Vibration test device - Google Patents

Abstract

The invention discloses a vibration test device, comprising: the device comprises a vertical vibration table side tool and a horizontal vibration table side tool, wherein a first connecting device of a mechanism to be tested is selectively connected with the mechanism to be tested through any one of at least two first connecting modes, and a second connecting device of the mechanism to be tested is selectively connected with the mechanism to be tested through any one of at least two second connecting modes; and the at least two first connection modes and the at least two second connection modes are coupled in a one-to-one correspondence manner, so that the mechanism to be tested is installed in different installation forms through different first connection modes and second connection modes coupled with the different first connection modes in a one-to-one correspondence manner, and at least one of the first connection modes and the second connection modes coupled in a one-to-one correspondence manner is movably connected.

Description

A vibration test device

technical field

The invention relates to the technical field of vibration testing, in particular to a vibration testing device.

Background technique

FIG. 1 is a schematic diagram of an existing vibration test bench. As shown in FIG. 1 , the vibration test bench includes a vertical shaking table 31, a horizontal shaking table 32, and a vibration device that can be optionally connected to any one of the vertical shaking table 31 and the horizontal shaking table 32 to generate vibration in a corresponding direction 33. Specifically, in the state shown in FIG. 1 , the vibration device 33 is located below the vertical vibration table 31 and is connected to the vertical vibration table 31. At this time, the vibration device 33 can make the vertical vibration table 31 vibrate in the vertical direction. The measured object (the measured part, device, equipment, etc.) of the vertical vibration test is installed on the vertical vibration table 31, so as to realize the test of the measured object. When the vibration device 33 is rotated by 90°, the vibration device 33 is connected to the horizontal vibration table 32. At this time, the vibration device 33 can cause the horizontal vibration table 32 to vibrate in the horizontal direction. The horizontal vibration table 32 is used to test the measured object. Whether it is the vertical vibrating table 31 or the horizontal vibrating table 32, there are also many holes or grooves distributed on the table surface, so that the measured object can be clamped by the corresponding clamping tool.

The limitation of the use of the above vibration test bench is: the object to be tested and the clamping tooling of the object to be tested can only be installed on the vertical vibration table 31 as a whole or can only be installed on the horizontal vibration table 32 to realize that the measured object is relative to the measured object. The vibration test in which the clamping tool of the test object is in a static state is difficult to realize the vibration test under the simulation of the actual motion state of the test object. In addition, compared with the horizontal shaking table 32, the vertical shaking table 31 has a smaller table area, which further limits the possibility of the vibration test bench to perform vertical vibration tests under the condition of simulating the actual motion state of the measured object through a complex structure.

At present, the test of the axle box of the railway vehicle bogie (for example, the changed axle box needs to be tested after the design of the axle box is changed) requires the entire bogie to be assembled and then placed on the rolling test bench. This kind of test The method is difficult and costly, which is not conducive to the optimal design of the axle box.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a vibration test device, which can independently install a measured mechanism such as an axle box of a railway vehicle bogie on a vibration test bench to conduct a vibration test. It can be combined organically to break through the space limitation of a single shaking table, so that the vibration test bench can simulate the vibration test under the actual motion state of the measured object through a more complex structure.

According to one aspect of the present invention, a vibration test device is provided, which is used to install a mechanism under test on a vibration test stand for vibration test; the vibration test stand includes a vertical vibration table, a horizontal vibration table, and an optional Any one of the vertical vibrating table and the horizontal vibrating table is connected to produce a vibrating device that vibrates in the corresponding direction; it comprises: a vertical vibrating table side tooling, the vertical vibrating table side tooling comprises a vertical vibrating table side support, the vertical vibrating table The lower end of the side bracket is fixedly installed on the surface of the vertical vibration table, and the upper end is installed with the first connection device of the mechanism under test; the horizontal vibration table side tooling includes a horizontal vibration table side bracket, and the horizontal vibration table side tooling includes a horizontal vibration table side bracket. The lower end of the table side bracket is fixedly installed on the horizontal vibration table surface and the upper end is installed with the second connection device of the mechanism under test; wherein, the first connection device of the mechanism under test can be selected through at least two first connection methods. Any one of the first connection methods is connected to the mechanism under test, and the second connection device of the mechanism under test can optionally be connected to the mechanism under test through any one of at least two second connection methods. and the at least two first connection manners and the at least two second connection manners are coupled in a one-to-one correspondence, so that the mechanism under test is connected through different first connection manners and different The first connection modes are installed in a one-to-one correspondence with the second connection modes of the coupling and are in different installation forms, and at least one of the first connection modes and the second connection modes of the one-to-one coupling is movably connected.

According to an embodiment of the vibration testing device of the present invention, the tested mechanism includes a front part, a rear part, and a connecting arm connected between the front part and the rear part, and the rear part is provided with a rotating shaft, The mechanism under test as a whole can rotate around the central axis of the shaft; when the mechanism under test is installed through a certain first connection method and a second connection method that is coupled one-to-one with the first connection method, the The central axis is in a horizontal state, and the central axis is in a vertical state when the mechanism under test is installed through another first connection mode and a second connection mode coupled with the first connection mode in a one-to-one correspondence.

According to an embodiment of the vibration test device of the present invention, the first connection device of the mechanism under test or the second connection device of the mechanism under test comprises: a base mounted on the upper end of the vertical vibration table side bracket or the horizontal vibration table side The upper end of the bracket; the upright column, which is arranged on the base; the cantilever, which is arranged on the upright column; It is installed on the fork plates on both sides of the fork base; wherein, the boom is a boom selected from the first boom and the second boom, and when the boom selects the first boom, the boom is The central axis is in a horizontal state, and when the boom selects the second boom, the central axis is in a vertical state.

According to an embodiment of the vibration testing device of the present invention, the bottom surface of the cantilever is provided with a jib mounting plate, and the jib mounting plate has a front mounting surface and a rear mounting surface; the first jib is a vertical jib, The upper end of the vertical suspension arm is adapted and connected to the front mounting surface through a flange plate, and the lower end of the vertical suspension arm is connected to the rotating shaft through the fork seat located above the rotating shaft; the second suspension The arm is an L-shaped suspension arm, the upper end of the L-shaped suspension arm is adapted and connected to the rear mounting surface through a flange, and the lower end of the L-shaped suspension arm is connected to the rear mounting surface through the fork seat located on the rear side of the rotating shaft. the shaft connection.

According to the embodiment of the vibration test device of the present invention, when the tested mechanism is in two states, the central axis is horizontal and the central axis is vertical, the first connecting device of the tested mechanism is At the front of the mechanism under test, the second connection devices of the mechanism under test are all used for connecting with the rotating shaft.

According to an embodiment of the vibration testing device of the present invention, the first connecting device of the mechanism under test has a mechanism under test support plate for placing the front part of the mechanism under test, and the upper end surface of the side support of the horizontal vibration table has a high height The height of the upper end of the pallet of the mechanism under test.

According to an embodiment of the vibration testing device of the present invention, the first connecting device of the mechanism under test has a mechanism under test support plate for placing the front part of the mechanism under test, when the mechanism under test is in the central axis In the vertical state, the rear end of the support plate of the mechanism under test extends to the rear of the mechanism under test and supports the rear part of the mechanism under test; and the support plate of the mechanism under test and the mechanism under test A pre-tightening force detection and adjustment device is arranged between the rear parts of the device, and the pre-tightening force detection and adjustment device can detect the contact force between the support plate of the mechanism under test and the rear of the mechanism under test and regulation.

According to an embodiment of the vibration test device of the present invention, the mechanism to be tested is a test piece of a railway vehicle bogie axle box; the front part includes a bearing housing box, a bearing installed in the bearing housing box, and a bearing installed in the bearing housing box The side of the end cap that encapsulates the bearing in the bearing housing. According to an embodiment of the vibration test device of the present application, the end cover adopts a split structure in which the front half and the rear half are detachably connected.

According to an embodiment of the vibration test device of the present invention, the vertical vibration table side tooling includes a vertical vibration table table positioning and installation base, and the vertical vibration table table positioning and installation base is fixed on the vertical vibration table using a positioning interface provided on the vertical vibration table table. On the vibrating table, the vertical vibrating table side support is located on the positioning and mounting base of the vertical vibrating table table surface.

According to an embodiment of the vibration test device of the present invention, the horizontal shaking table side tooling includes a horizontal shaking table table positioning and installation base, and the horizontal shaking table table positioning and installation base is fixed to the horizontal using a positioning interface provided on the horizontal shaking table table. On the vibrating table, the horizontal vibrating table side support is located on the positioning and mounting base of the horizontal vibrating table table surface.

The above-mentioned vibration test device utilizes a vertical shaking table and a horizontal shaking table at the same time, and a part of the mechanism under test is movably connected to one of the vertical shaking table and the horizontal shaking table while the other part is connected to the other of the vertical shaking table and the horizontal shaking table. , which not only breaks through the limitation of the use of vertical shaking table and horizontal shaking table, but also breaks through the space limitation of a single shaking table, so that the vibration test bench can simulate the actual motion state of the measured object through a more complex structure. Vibration test.

In addition, since the at least two first connection manners and the at least two second connection manners are coupled in a one-to-one correspondence, the mechanism under test can pass through different first connection manners and different first connection manners. The connection modes are installed in a one-to-one correspondence with the coupled second connection mode and are in different installation forms, so that the vibration test of the tested mechanism in different installation forms can be realized.

The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or learned by practice.

Description of drawings

The accompanying drawings constituting a part of this specification are used to assist the understanding of the present invention, and the content provided in the accompanying drawings and their related descriptions in this specification can be used to explain the present invention, but do not constitute an improper limitation of the present invention.

Fig. 1 is a schematic diagram of an existing vibration test bench.

FIG. 2 is a schematic structural diagram of a vibration testing device according to an embodiment of the present invention (the tested mechanism is in an installation state).

FIG. 3 is a partial enlarged view of FIG. 2 .

FIG. 4 is a schematic structural diagram of a vibration test device according to an embodiment of the present invention (the mechanism under test is in another installation form).

Marked as: control system 10, measured mechanism 20, front part 21, bearing housing box 211, bearing 212, end cover 213, rear part 22, rotating shaft 221, connecting arm 23, vertical vibration table 31, horizontal vibration table 32 , vibration device 33, power amplifier 34, water cooling tower 35, vertical vibration table side tooling 50, vertical vibration table side bracket 51, first connecting device 52 of the mechanism under test, vertical vibration table table positioning and installation base 53, horizontal vibration table side Tooling 60, horizontal vibration table side bracket 61, second connection device 62 of the mechanism under test, base 621, upright column 622, cantilever 623, boom mounting plate 6231, boom 624, fork base 6241, horizontal vibration table table positioning and installation base 63. Pre-tightening force detection and adjustment device 70 , screw rod 71 , pre-tightening nut 72 , pressure sensor 73 .

Detailed ways

The present invention will be clearly and completely described below with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before the present invention is described in conjunction with the accompanying drawings, it should be particularly pointed out that:

The technical solutions and technical features provided in each section including the following description can be combined with each other under the condition of no conflict. In addition, where possible, these technical solutions, technical features and related combinations can be assigned specific technical subjects and protected by related patents.

The embodiments of the present invention involved in the following description are usually only a part of the embodiments rather than all the embodiments, based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work , should belong to the scope of patent protection.

Regarding terms and units in this specification: The terms "comprising", "comprising", "having" and any variations thereof in this specification and corresponding claims and related parts are intended to cover non-exclusive inclusion. The terms "front", "rear", "left", and "right" in this specification and the corresponding claims and related parts represent relative positional relationships based on the drawings. In addition, other related terms and units can be reasonably explained based on the relevant content provided in this specification.

FIG. 1 is a schematic diagram of an existing vibration test bench. As shown in FIG. 1 , the vibration test bench includes a vertical shaking table 31, a horizontal shaking table 32, and a vibration device that can be optionally connected to any one of the vertical shaking table 31 and the horizontal shaking table 32 to generate vibration in a corresponding direction 33.

In the state shown in FIG. 1, the vibration device 33 is located below the vertical vibration table 31 and is connected to the vertical vibration table 31. At this time, the vibration device 33 can cause the vertical vibration table 31 to vibrate in the vertical direction, and a vertical vibration test needs to be performed. The measured object (measured part, device, equipment, etc.) is installed on the vertical vibration table 31, so as to realize the test of the measured object.

When the vibration device 33 is rotated by 90°, the vibration device 33 is connected to the horizontal vibration table 32. At this time, the vibration device 33 can cause the horizontal vibration table 32 to vibrate in the horizontal direction. The horizontal vibration table 32 is used to test the measured object.

Whether it is the vertical vibrating table 31 or the horizontal vibrating table 32, there are also many more holes or grooves distributed on the table surface, so that the measured object can be clamped by the corresponding clamping tool.

The limitation of the use of the above vibration test bench is: the object to be tested and the clamping tooling of the object to be tested can only be installed on the vertical vibration table 31 as a whole or can only be installed on the horizontal vibration table 32 to realize that the measured object is relative to the measured object. The vibration test in which the clamping tool of the test object is in a static state is difficult to realize the vibration test under the simulation of the actual motion state of the test object.

In addition, compared with the horizontal shaking table 32, the vertical shaking table 31 has a smaller table area, which further limits the possibility of the vibration test bench to perform vertical vibration tests under the condition of simulating the actual motion state of the measured object through a complex structure.

FIG. 2 is a schematic structural diagram of a vibration testing device according to an embodiment of the present invention (the tested mechanism is in an installation state). FIG. 3 is a partial enlarged view of FIG. 2 . FIG. 4 is a schematic structural diagram of a vibration test device according to an embodiment of the present invention (the mechanism under test is in another installation form). As shown in FIG. 2-FIG. 4, a vibration test device is used to install the measured mechanism 20 on a vibration test bench for vibration test. The vibration test device includes a vertical vibration table side tooling 50 and a horizontal vibration table side tooling 60.

Wherein, the vibration test stand includes a vertical vibration table 31, a horizontal vibration table 32, and a vibration device 33 optionally connected to any one of the vertical vibration table and the horizontal vibration table to generate vibration in a corresponding direction.

A complete vibration test stand also typically includes a control system 10 , a power amplifier 34 and a water cooling tower 35 . The control system 10 is used to control the vibration test stand, for example, to control the vibration device 33, so that the vertical vibration table 31 or the horizontal vibration table 32 can generate required vibration. The power amplifier 34 can amplify the vibration signal sent by the control system 10 and then send it to the vibration device 33 . The water cooling tower 35 is used for providing cooling water to the vibration device 33 and cooling the cooling water output by the vibration device 33 .

The vertical vibration table side tooling 50 includes a vertical vibration table side bracket 51, the lower end of the vertical vibration table side bracket 51 is fixedly installed on the table surface of the vertical vibration table 31, and the upper end is installed with a first connecting device 52 of the mechanism under test.

The horizontal vibration table side tooling 60 includes a horizontal vibration table side bracket 61, the lower end of the horizontal vibration table side bracket 61 is fixedly installed on the table surface of the horizontal vibration table 32, and the upper end is installed with a second connecting device 62 of the mechanism under test.

Wherein, the first connection device 52 of the mechanism under test can be selectively connected to the mechanism under test 20 through any one of at least two first connection methods, and the second connection device of the mechanism under test 62 is optionally connected to the mechanism under test 20 through any one of at least two second connection modes.

In addition, the at least two first connection manners and the at least two second connection manners are coupled in a one-to-one correspondence, so that the mechanism under test 20 is connected through different first connection manners and different first connection manners. The connection modes are installed in a one-to-one correspondence with the second connection mode of the coupling and are in different installation forms, and at least one of the first connection mode and the second connection mode of the one-to-one coupling is movably connected.

It should be noted that the "coupling" here means that the first connection mode and the second connection mode of the one-to-one correspondence are related to each other. the second connection method.

In addition, the vertical vibrating table side tooling 50 may also include a vertical vibrating table top positioning and mounting base 53, and the vertical vibrating table top positioning and mounting base 53 is fixed on the vertical vibrating table by using the positioning interface provided on the vertical vibrating table 31 top. 31, the vertical vibration table side bracket 51 is located on the vertical vibration table table top positioning and installation base 53.

In an optional embodiment, the vertical vibration table surface positioning and installation base 53 and the vertical vibration table side bracket 51 are of the same structure (as shown in FIG. 2 ). In other embodiments, the vertical vibration table top positioning and installation base 53 and the vertical vibration table side support 51 are of different structures, and the vertical vibration table side support 51 is installed on the vertical vibration table top positioning and mounting base 53 .

Similarly, the horizontal vibration table side tooling 60 may also include a horizontal vibration table table positioning and installation base 63, and the horizontal vibration table table positioning and installation base 63 is fixed on the horizontal vibration table 32 using the positioning interface provided on the table surface of the horizontal vibration table 32. On the table 32 , the horizontal vibration table side bracket 61 is installed on the horizontal vibration table table top positioning and installation base 63 .

The mechanism under test 20 may be a structure including a front part 21 , a rear part 22 and a connecting arm 23 connected between the front part 21 and the rear part 22 , and the rear part 22 is on the connecting arm 23 . A rotating shaft 221 is provided, and the entire mechanism under test 20 can rotate around the central axis of the rotating shaft 221 .

For example, the mechanism under test 20 is a test piece of a railway vehicle bogie axle box; at this time, the front part 21 includes a bearing housing box 211 , a bearing 212 installed in the bearing housing box 211 , and a bearing housing box installed in the bearing housing box 211 . The side of 211 encapsulates the bearing 212 in the end cap 213 in the bearing housing 211 .

In this way, the axle box of the railway vehicle bogie can be separately installed on the vibration test bench for vibration test, avoiding the need to assemble the entire bogie and then put it on the rolling test bench for testing, which greatly reduces the difficulty of the vibration test of the railway vehicle bogie axle box. cut costs.

In one embodiment, the end cover 213 adopts a split structure in which the front half and the rear half are detachably connected. The end covers of the conventional railway vehicle bogie axle boxes are all integral structures, which are difficult to install. In the above embodiment, the end cover 213 adopts a split structure in which the front half and the rear half are detachably connected, so that the installation is easier.

When the mechanism under test 20 has the above structure, after the mechanism under test 20 is installed through a certain first connection mode and a second connection mode coupled with the first connection mode in a one-to-one correspondence, the central axis is in the shape of a In the horizontal state (as shown in Figures 2 and 3), when the mechanism under test is installed through another first connection method and a second connection method that is coupled one-to-one with this first connection method, the central axis in an upright position (as shown in Figure 4).

When the mechanism under test 20 has the above-mentioned structure, according to the usual test requirements, no matter when the mechanism under test 20 is in the state where the central axis is horizontal and the state where the central axis is vertical, the The first connecting devices 52 of the mechanism under test are both used for placing the front part 21 of the mechanism under test 20 , and the second connecting devices 62 of the mechanism under test are both used for connecting with the rotating shaft 221 .

At this time, the vibration test of the above-mentioned mechanism 20 (such as the axle box test piece of the railway vehicle bogie) can be carried out from two directions, one can be called a vertical vibration test (that is, the vibration direction is consistent with the central axis of the rotating shaft 221, Specifically as shown in Figures 2 and 3); the other can be called a horizontal vibration test (that is, the vibration direction is perpendicular to the central axis of the rotating shaft 221, as shown in Figure 4). The above-mentioned vertical vibration test and horizontal vibration test can simulate the stress on the axle box of the railway vehicle bogie when the railway vehicle is running.

During the vertical vibration test, the vertical vibration table 31 vibrates, and the horizontal vibration table 32 is fixed. At this time, the rear part 22 of the tested mechanism 20 is equivalent to being installed on the bogie frame of the railway vehicle, and the vertical vibration table 31 simulates The vertical vibration of the bearing housing 211 caused by the rolling process of the wheel.

During the horizontal vibration test, the vertical vibration table 31 vibrates, and the horizontal vibration table 32 is fixed. At this time, the rear part 22 of the tested mechanism 20 is equivalent to being installed on the bogie frame of the railway vehicle, and the vertical vibration table 31 simulates The horizontal vibration of the bearing housing 211 caused by the rolling process of the wheel.

In addition, as the specific structure of the second connection device 62 of the mechanism under test, as shown in FIGS. 2-4 , the second connection device 62 of the mechanism under test includes: a base 621 , a column 622 , a cantilever 623 and a suspension arm 624 .

Wherein, the base 621 is installed on the upper end of the horizontal vibration table side bracket 61; the column 622 is arranged on the base 621; the cantilever 623 is arranged on the column 622; one end of the suspension arm 624 is installed on the The cantilever 623 and the other end are connected to the rotating shaft 221 through a fork base 6241, and the two ends of the rotating shaft 221 are respectively mounted on the fork plates on both sides of the fork base 6241; A type of boom selected from the second boom, when the boom selects the first boom, the central axis is in a horizontal state (as shown in FIG. 3 ), and when the boom 624 selects the second boom The central axis is in a vertical state (as shown in Figure 4).

More specifically, the bottom surface of the boom 623 is provided with a boom mounting plate 6231, and the boom mounting plate 6231 has a front mounting surface and a rear mounting surface; the first boom is a vertical boom (as shown in FIG. 3), the upper end of the vertical boom is connected to the front mounting surface through a flange, and the lower end of the vertical boom is connected to the rotation shaft through the fork seat 6241 located above the rotation shaft 221. 221 connection.

The second boom is an L-shaped boom (as shown in Figure 4), the upper end of the L-shaped boom is connected to the rear mounting surface through a flange, and the lower end of the L-shaped boom The fork seat 6241 on the rear side of the rotating shaft 221 is connected with the rotating shaft 221 .

The above-mentioned second connection device 62 of the mechanism under test has the advantage that it can switch between the two second connection modes only by changing between the first boom and the second boom.

The connection between the fork plate of the fork seat 6241 and the rotating shaft 221 can be a bolt that passes through the rotating shaft 221 from the radial direction of the rotating shaft 221 and is connected to the threaded hole on the end face of the fork plate. This connection method still simulates the connection method between the railway vehicle bogie axle box and the bogie frame, so that the connection method can be tested in the vibration test.

Optionally, the first connection device 52 of the mechanism under test has a mechanism under test support plate for placing the front part 21 of the mechanism under test 20 . At this time, the height of the upper end surface of the horizontal vibration table side bracket 61 may be higher than the height of the upper end surface of the support plate of the mechanism under test.

As mentioned above, the first connecting devices 52 of the mechanism under test are all used for placing the front part 21 of the mechanism under test 20 . On this basis, connecting bolts can be installed between the support plate of the mechanism under test and the bottom surface of the front part 21 (bearing housing 211) of the mechanism under test 20. The bottom surface of the front part 21 (the bearing housing 211 ) of the mechanism 20 is connected.

Bolt holes can be provided in different directions on the surface of the front part 21 (bearing housing box 211 ) of the mechanism under test 20 , so that, whether the vertical vibration test or the horizontal vibration test is carried out, the support plate of the mechanism under test and the test mechanism can be connected. Connecting bolts are installed between the bottom surfaces of the front part 21 (the bearing housing box 211 ) of the mechanism 20 to realize two first connection modes.

Since the support plate of the mechanism under test and the bottom surface of the front part 21 (the bearing block box 211 ) of the mechanism under test 20 are connected by bolts, the front part 21 (the bearing block box 211 ) can be prevented from vibrating when the vertical vibration table 31 vibrates. The pallet jumps up and down relative to the mechanism under test.

In addition, as shown in FIG. 4 , when the mechanism under test 20 is in a vertical state with the central axis, the rear end of the support plate of the mechanism under test extends to the rear portion 22 of the mechanism under test 20 and supports the residence the rear part 22 of the mechanism under test; and a pre-tightening force detection and adjustment device 70 is arranged between the bracket plate of the mechanism under test and the rear part 22 of the mechanism under test 20, and the pre-tightening force detection and adjustment device 70 The device 70 can detect and adjust the contact force between the support plate of the mechanism under test and the rear portion 22 of the mechanism under test 20 .

Specifically, the preload force detection and adjustment device 70 includes a screw rod 71 , a preload nut 72 , and a pressure sensor 73 . Wherein, the screw 71 passes through the rear part 22 (specifically, the axial through hole in the rotating shaft 221 ) of the mechanism under test 20 upward from the support plate of the mechanism under test, and then is connected to the pre-tightening nut 72 , and the pressure sensor 73 is pressed against the under test mechanism. Between the mechanism pallet and the rear portion 22 of the mechanism under test 20 .

The above-mentioned preload force detection and adjustment device 70 can increase or decrease the force (action force between the rear part 22 (rotating shaft 221 ) of the mechanism under test 20 , the support plate of the mechanism under test and the fork seat 6241 by rotating the preload nut 72 . The force can be detected by the pressure sensor 73), so as to simulate the unused force between the axle box of the railway vehicle bogie and the bogie frame when the vehicle turns due to the different turning radius, so as to test the axle box vibration when the vehicle passes through different turning radii. Impact on the axle box.

The content of the present invention has been described above. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Based on the above contents of this specification, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the scope of patent protection.

Claims (10)

1. a vibration test device, is characterized in that: for the mechanism to be tested is installed on the vibration test stand to carry out the vibration test; The vibration test bench includes a vertical shaking table, a horizontal shaking table, and a vibration device that is optionally connected to any one of the vertical shaking table and the horizontal shaking table to generate vibration in a corresponding direction; It includes: Vertical vibration table side tooling, the vertical vibration table side tooling includes a vertical vibration table side bracket, the lower end of the vertical vibration table side bracket is fixedly installed on the vertical vibration table surface, and the upper end is installed with the first connection device of the mechanism under test ; A horizontal vibration table side tooling, the horizontal vibration table side tooling includes a horizontal vibration table side bracket, the lower end of the horizontal vibration table side bracket is fixedly installed on the horizontal vibration table surface, and the upper end is installed with a second connection device of the mechanism under test ; Wherein, the first connection device of the mechanism under test can be selectively connected to the mechanism under test through any one of at least two first connection methods, and the second connection device of the mechanism under test can be selected is connected to the measured mechanism through any one of at least two second connection modes; In addition, the at least two first connection manners and the at least two second connection manners are coupled in a one-to-one correspondence, so that the mechanism under test is connected to the different first connection manners through different first connection manners and the different first connection manners. The second connection modes of the one-to-one correspondence are installed and in different installation forms, and at least one of the first connection modes and the second connection modes of the one-to-one coupling is movably connected. 2. The vibration testing device according to claim 1, wherein the tested mechanism comprises a front part, a rear part and a connecting arm connected between the front part and the rear part, the The rear part is provided with a rotating shaft, and the whole of the tested mechanism can rotate around the central axis of the rotating shaft; When the mechanism under test is installed through a certain first connection method and a second connection method coupled with the first connection method in a one-to-one correspondence, the central axis is in a horizontal state. After the first connection mode and the second connection mode coupled with the first connection mode in a one-to-one correspondence are installed, the central axis is in a vertical state. 3. The vibration test device according to claim 2, wherein the first connection device of the mechanism under test or the second connection device of the mechanism under test comprises: The base is installed on the upper end of the vertical vibration table side bracket or the upper end of the horizontal vibration table side bracket; a column, arranged on the base; a cantilever, arranged on the upright column; a suspension arm, one end is mounted on the cantilever arm and the other end is connected with the rotating shaft through a fork seat, and the two ends of the rotating shaft are respectively mounted on the fork plates on both sides of the fork seat; Wherein, the boom is a boom selected from the first boom and the second boom, when the boom selects the first boom, the central axis is in a horizontal state, and when the boom selects the first boom When the second boom is used, the central axis is in a vertical state. 4. The vibration test device according to claim 3, characterized in that: the bottom surface of the cantilever is provided with a boom mounting plate, and the boom mounting plate has a front mounting surface and a rear mounting surface; The first boom is a vertical boom, the upper end of the vertical boom is connected with the front mounting surface through a flange plate, and the lower end of the vertical boom is connected to the front mounting surface through the flange. the fork seat is connected with the rotating shaft; The second boom is an L-shaped boom, the upper end of the L-shaped boom is adapted to connect with the rear mounting surface through a flange, and the lower end of the L-shaped boom is connected to the rear side of the rotating shaft The fork base is connected with the rotating shaft. 5. The vibration testing device according to claim 2, characterized in that: when the measured mechanism is in two states: the central axis is in a horizontal state and the central axis is in a vertical state, the measured The first connecting devices of the mechanism are all used for placing the front part of the mechanism under test, and the second connecting devices of the mechanism under test are all used for connecting with the rotating shaft. 6 . The vibration test device according to claim 5 , wherein the first connection device of the mechanism under test has a mechanism under test support plate for placing the front part of the mechanism under test, and the horizontal vibration table The height of the upper end surface of the side bracket is higher than the height of the upper end surface of the support plate of the mechanism under test. 7 . The vibration testing device according to claim 5 , wherein the first connecting device of the mechanism under test has a mechanism under test support plate for placing the front part of the mechanism under test, and when the mechanism under test is When the mechanism is in the vertical state of the central axis, the rear end of the support plate of the mechanism to be tested extends to the rear of the mechanism to be tested and supports the rear of the mechanism to be tested; In addition, a pre-tightening force detection and adjustment device is arranged between the under-tested mechanism support plate and the rear portion of the under-tested mechanism. The contact force between the rear parts of the tested mechanism is detected and adjusted. 8 . The vibration test device according to claim 2 , wherein: the measured mechanism is a railway vehicle bogie axle box test piece; the front part comprises a bearing housing box and a bearing installed in the bearing housing box. 9 . and an end cap mounted on the side of the bearing housing to encapsulate the bearing in the bearing housing. 9 . The vibration testing device according to claim 8 , wherein the end cover adopts a split structure in which the front half and the rear half are detachably connected. 10 . 10. The vibration test device of claim 1, wherein the vertical vibration table side tooling comprises a vertical vibration table table top positioning and mounting base, and the vertical vibration table table positioning and mounting base utilizes the vertical vibration table top positioning and mounting base. The provided positioning interface is fixed on the vertical vibration table, and the vertical vibration table side bracket is located on the vertical vibration table surface positioning and installation base; And/or, the horizontal vibration table side tooling includes a horizontal vibration table surface positioning and installation base, and the horizontal vibration table table positioning and installation base is fixed on the horizontal vibration table by using a positioning interface provided on the horizontal vibration table surface, and the The horizontal vibration table side bracket is located on the positioning and installation base of the horizontal vibration table table top.

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