Damping effect measuring device

Abstract

The utility model discloses a vibration reduction effect measuring device. The vibration reduction effect measuring device comprises a rack, a steel hammer, an electromagnetic attraction mechanism and a protective part. The rack comprises a support, a supporting table and a mounting frame, the support is connected with the supporting table and the mounting frame, the supporting table and the mounting frame are oppositely arranged in the gravity direction, and the supporting table is used for placing a to-be-tested workpiece. The steel hammer is connected with the installation frame through a lifting rope. The electromagnetic attraction mechanism is arranged on the mounting frame and used for attracting or releasing the steel hammer so that the steel hammer can strike the to-be-tested workpiece. The protection piece is connected with the support and located between the supporting table installation frames, the protection piece is provided with a through hole penetrating in the gravity direction, and the steel hammer penetrates through the through hole and is limited in the radial direction of the through hole. According to the technical scheme provided by the invention, the same test condition can be provided for the vibrator.

Description

Technical Field

[0001] The present application relates to the technical field of vibration reduction effect detection, and in particular to a vibration reduction effect measuring device. Background Art

[0002] In modern industrial production, shock absorbers are an important vibration reduction component and are widely used in various mechanical equipment to reduce the impact of vibration on equipment performance and service life. For example, the main function of rail shock absorbers used in urban rail transit, high-speed railways and heavy-duty railways is to reduce rail vibration and noise and improve the safety and comfort of railway operation. They are usually installed under or beside the rails to reduce the impact of vibration on the surrounding environment and buildings by absorbing and dispersing vibration energy.

[0003] At present, there are many limitations in the measurement of the vibration reduction effect of rail vibration dampers in CJJ / T191-2012 "Technical Specifications for Floating Slab Tracks", such as difficulty in unifying test conditions, low test accuracy, and insufficient safety of the test process. Utility Model Content

[0004] The present application provides a vibration reduction effect measuring device, which can provide the same test conditions to a vibrator.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] The present application provides a vibration reduction effect measuring device, which includes a frame, a steel hammer, an electromagnetic suction mechanism and a protective member. The frame includes a bracket, a support platform and a mounting frame, the bracket connects the support platform and the mounting frame, the support platform and the mounting frame are arranged relatively to each other along the direction of gravity, and the support platform is used to place the workpiece to be tested. The steel hammer is connected to the mounting frame through a suspension rope. The electromagnetic suction mechanism is arranged on the mounting frame, which is used to absorb or release the steel hammer so that the steel hammer hits the workpiece to be tested. The protective member is connected to the bracket and is located between the support platform and the mounting frame. The protective member has a through hole that penetrates along the direction of gravity, and the through hole is for the steel hammer to pass through and limits the steel hammer in the radial direction of the through hole.

[0007] The vibration reduction effect measuring device can be used to measure the vibration reduction effect of the workpiece to be tested, such as a vibration damper. The adsorption and release of the steel hammer can be controlled by the electromagnetic suction mechanism, and the force and position of the steel hammer hitting the vibration damper can be accurately controlled to achieve the measurement of the vibration reduction effect of the vibration damper. In the above scheme, on the one hand, different vibration dampers can be measured, and due to the structural design and operation mode of the device, the conditions of each test (such as the same excitation position, and the same magnitude of excitation force) can be guaranteed to be the same, thereby ensuring the repeatability and consistency of the test results; on the other hand, due to the provision of a protective member, the steel hammer can be restricted in the radial direction, reducing the risk of the steel hammer overturning and hitting personnel and other work equipment, thereby increasing the safety of the test process.

[0008] According to some embodiments of the present application, the vibration reduction effect measuring device further includes a controller. The electromagnetic suction mechanism includes a large suction electromagnet and a switch switch. The large suction electromagnet is fixed to the surface of the mounting frame facing the support platform and connected to the switch switch. The switch switch is connected to the controller, and the controller controls the switch switch. The surface of the steel hammer facing the large suction electromagnet is a flat surface, which is used for magnetic adsorption with the large suction electromagnet.

[0009] In the above scheme, the vibration reduction effect measuring device realizes precise control of the adsorption and release of the steel hammer through an integrated controller and an electromagnetic suction mechanism to ensure the automation and standardization of the test process, thereby improving the test efficiency and the accuracy of the results.

[0010] According to some embodiments of the present application, the steel hammer includes a counterweight block and a hammer head connected to each other, the counterweight block is used to cooperate with the electromagnetic suction mechanism, the surface of the hammer head facing the support platform is an arc surface, and the hardness of the hammer head is 50HRC.

[0011] In the above scheme, the configuration block is set to be able to adjust the mass of the steel hammer according to needs so as to meet the requirements of different measurement conditions; at the same time, the surface of the hammer head facing the support platform is set as an arc surface, which helps to evenly distribute the impact force, reduce local stress concentration, and improve the accuracy of the measurement results.

[0012] According to some embodiments of the present application, a rubber plate is provided between the counterweight block and the hammer head along the direction of gravity.

[0013] In the above scheme, by arranging a rubber plate between the counterweight block and the hammer head, it can be used to buffer and transmit the striking energy, reduce the impact and vibration during the measurement process, and help improve the accuracy of the measurement results.

[0014] According to some embodiments of the present application, the protective member includes a crossbeam and a longitudinal beam, one end of the crossbeam is connected to the bracket, the other end of the crossbeam is connected to the longitudinal beam, one end of the longitudinal beam facing away from the crossbeam is connected to the support platform, and a through hole is formed in the crossbeam.

[0015] In the above solution, the protective element has a simple structure and is easy to manufacture.

[0016] According to some embodiments of the present application, a buffer support portion is provided on a surface of the beam facing the mounting frame, and the buffer support portion is provided at an edge of the through hole along the circumference of the through hole;

[0017] A limiting portion is arranged on the outer peripheral surface of the steel hammer, and the limiting portion is used for abutting against the buffer support portion.

[0018] In the above scheme, when the steel hammer is released by the electromagnetic suction mechanism and hits the shock absorber, the limiting portion can abut against the buffer support portion, thereby limiting the steel hammer in the direction of gravity, reducing the risk of the shock absorber being pierced by the steel hammer, causing the steel hammer to pass through the through hole and detach from the protective part, thereby further improving the safety of the testing process.

[0019] According to some embodiments of the present application, the vibration reduction effect measuring device also includes a lifting mechanism, which is arranged on a surface of the mounting frame away from the support platform. The support platform is formed with a through hole for a lifting rope to pass through and connect to the lifting mechanism. The lifting mechanism is used to lift the steel hammer.

[0020] In the above scheme, by providing a lifting mechanism, the steel hammer can be lifted so that after the measurement is completed, the steel hammer is lifted to the electromagnetic suction mechanism and adsorbed by the electromagnetic suction mechanism, thereby facilitating the next measurement.

[0021] According to some embodiments of the present application, the frame also includes a lifting mechanism, which is arranged opposite to the bracket in the horizontal direction, one end of the mounting frame is slidably connected to the bracket, and the other end of the mounting frame is connected to the execution end of the lifting mechanism, and the lifting mechanism is used to adjust the position of the mounting frame along the gravity direction.

[0022] In the above scheme, by setting up a lifting mechanism, the height of the mounting frame can be adjusted, thereby adjusting the height of the electromagnetic suction mechanism, and then adjusting the release height of the steel hammer, so that the test conditions can be adjusted according to needs to provide different sizes of impact force for the shock absorber.

[0023] According to some embodiments of the present application, the mounting frame and the bracket are connected via a sliding sleeve, and the sliding sleeve can be slidably mounted on the bracket along the gravity direction;

[0024] The lifting mechanism comprises a screw rod and a nut box arranged on the screw rod, and the mounting frame is hinged to the nut box.

[0025] According to some embodiments of the present application, a groove is formed on the surface of the support table facing the mounting frame, a tray is placed in the groove, a flange is provided at the edge of the tray, and the flange is an annular structure along the circumference of the tray. The tray is used to place the workpiece to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 Schematic diagram of a vibration reduction effect measuring device and a workpiece to be tested in some embodiments of the present application;

[0028] Figure 2 Schematic diagram of a steel hammer hitting a workpiece to be tested in some embodiments of the present application;

[0029] Figure 3 Schematic diagram of a vibration reduction effect measuring device in some embodiments of the present application.

[0030] Icons: 100-vibration reduction effect measuring device, 10-frame, 11-bracket, 12-support platform, 120-groove, 13-mounting frame, 20-steel hammer, 21-counterweight, 22-hammer head, 23-rubber plate, 30-electromagnetic suction mechanism, 40-protective part, 41-through hole, 42-cross beam, 43-longitudinal beam, 44-buffer support part, 50-lifting mechanism, 60-lifting mechanism, 61-sliding sleeve, 62-nut box, 70-tray. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present application, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0035] In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0037] Some embodiments of the present application provide a vibration reduction effect measurement device, see Figure 1-Figure 3 , Figure 1 Schematic diagram of a vibration reduction effect measuring device and a workpiece to be tested in some embodiments of the present application. Figure 2 This is a schematic diagram of a steel hammer hitting a workpiece to be tested in some embodiments of the present application. Figure 3 Schematic diagram of a vibration reduction effect measuring device in some embodiments of the present application.

[0038] The vibration reduction effect measuring device 100 includes a frame 10, a steel hammer 20, an electromagnetic suction mechanism 30 and a protective member 40. The frame 10 includes a bracket 11, a support platform 12 and a mounting frame 13. The bracket 11 connects the support platform 12 and the mounting frame 13. The support platform 12 and the mounting frame 13 are arranged relatively to each other along the direction of gravity. The support platform 12 is used to place the workpiece to be tested. The steel hammer 20 is connected to the mounting frame 13 through a suspension rope. The electromagnetic suction mechanism 30 is arranged on the mounting frame 13, and is used to absorb or release the steel hammer 20 so that the steel hammer 20 hits the workpiece to be tested. The protective member 40 is connected to the bracket 11 and is located between the support platform 12 and the mounting frame 13. The protective member 40 has a through hole 41 that penetrates along the direction of gravity. The through hole 41 allows the steel hammer 20 to pass through and limits the steel hammer 20 in the radial direction of the through hole 41.

[0039] The workpiece to be tested may include a vibration damper. Figure 1 and Figure 2 The workpiece 200 to be tested includes a concrete support block 201, a vibration absorber 202 and a rail 203. The vibration absorber 202 is disposed between the concrete support block 201 and the rail 203. In some embodiments, during the test process, different conditions can be provided for the vibration reduction test of the vibration absorber by changing the type of the concrete support block and the type of the rail, so as to effectively test the vibration reduction effect of the vibration absorber under the condition factors of concrete support blocks with different sections and different rail structures.

[0040] In some embodiments, see Figure 2When the steel hammer 20 contacts the rail, the steel hammer 20 is in the through hole 41 of the protective member 40 and is supported by the hole wall of the through hole 41. In some embodiments, the material of the protective member 40 may include stainless steel, aluminum alloy, reinforced plastic, etc.

[0041] The vibration reduction effect measuring device 100 can be used to measure the vibration reduction effect of a workpiece to be tested, such as a vibration absorber. The electromagnetic suction mechanism 30 controls the adsorption and release of the steel hammer 20, and the force and position of the steel hammer 20 hitting the vibration absorber can be accurately controlled to achieve the measurement of the vibration reduction effect of the vibration absorber. In the above scheme, on the one hand, different vibration absorbers can be measured, and due to the structural design and operation mode of the device, the conditions of each test (such as the same excitation position, and the same magnitude of excitation force) can be guaranteed to be the same, thereby ensuring the repeatability and consistency of the test results; on the other hand, due to the provision of a protective member 40, it is possible to impose restrictions on the steel hammer 20 in the radial direction, thereby reducing the risk of the steel hammer 20 tipping over and hitting personnel and other work equipment, thereby increasing the safety of the test process.

[0042] According to some embodiments of the present application, the vibration reduction effect measuring device 100 further includes a controller. The electromagnetic suction mechanism 30 includes a large suction electromagnet and a switch switch. The large suction electromagnet is fixed to the surface of the mounting frame 13 facing the support platform 12 and is connected to the switch switch. The switch switch is connected to the controller, and the controller controls the switch switch. The surface of the steel hammer 20 facing the large suction electromagnet is a flat surface, which is used for magnetic adsorption with the large suction electromagnet.

[0043] In some embodiments, the controller may include a programmable logic controller, and a human-computer interaction module, such as a touch screen, may be provided on the frame 10. The human-computer interaction module is connected to the controller, and the tester may control the power on and off of the high-suction electromagnet and other electrical components of the vibration reduction effect measuring device 100 through the human-computer interaction module.

[0044] In the above scheme, the vibration reduction effect measuring device 100 realizes precise control of the adsorption and release of the steel hammer 20 through the integrated controller and the electromagnetic suction mechanism 30 to ensure the automation and standardization of the test process, thereby improving the test efficiency and the accuracy of the results.

[0045] According to some embodiments of the present application, the steel hammer 20 includes a counterweight block 21 and a hammer head 22 connected to each other, the counterweight block 21 is used to cooperate with the electromagnetic suction mechanism 30, the surface of the hammer head 22 facing the support platform 12 is an arc surface, and the hardness of the hammer head 22 is 50HRC.

[0046] In some embodiments, the radius of the arc surface of the hammer head 22 facing the support platform 12 is 120 mm, and the width is 120 mm.

[0047] In some embodiments, the connection between the counterweight block 21 and the hammer head 22 can be a detachable connection, so that the mass of the entire steel hammer 20 can be changed by replacing the counterweight block 21, thereby providing different magnitudes of exciting forces to the workpiece to be tested. The connection between the counterweight block 21 and the hammer head 22 can be a detachable connection such as a threaded connection or a clamping connection.

[0048] For example, in general, the overall mass of the steel hammer 20 may be 50 kg. The adsorption force that the electromagnetic adsorption mechanism 30 can provide may be greater than 50 kg, and the adsorption force that the electromagnetic adsorption mechanism 30 can provide may be any value between 55 kg and 70 kg.

[0049] In the above scheme, the configuration block is set to be able to adjust the mass of the steel hammer 20 as needed to meet the needs of different measurement conditions; at the same time, the surface of the hammer head 22 facing the support platform 12 is set as an arc surface, which helps to evenly distribute the impact force, reduce local stress concentration, and improve the accuracy of the measurement results.

[0050] According to some embodiments of the present application, a rubber plate 23 is provided between the counterweight 21 and the hammer head 22 along the gravity direction.

[0051] In some embodiments, the rubber plate 23 can be bonded to the lower surface of the counterweight 21, a screw is protruding from the lower surface of the counterweight 21, the upper surface of the hammer head 22 can be set in the screw hole, and the screw passes through the rubber plate 23 to be set in the screw hole.

[0052] In the above scheme, by arranging the rubber plate 23 between the counterweight block 21 and the hammer head 22, it can be used to buffer and transfer the striking energy, reduce the impact and vibration during the measurement process, and help improve the accuracy of the measurement results.

[0053] According to some embodiments of the present application, the protective member 40 includes a crossbeam 42 and a longitudinal beam 43, one end of the crossbeam 42 is connected to the bracket 11, the other end of the crossbeam 42 is connected to the longitudinal beam 43, one end of the longitudinal beam 43 facing away from the crossbeam 42 is connected to the support platform 12, and a through hole 41 is formed in the crossbeam 42.

[0054] In some embodiments, the support platform 12 can be a cast iron structure, the bracket 11 includes a rod-shaped structure, the end of the bracket 11 is welded to the support platform 12, one end of the cross beam 42 is welded to the inner side of the bracket 11, and the other end of the cross beam 42 is welded to the longitudinal beam 43. The longitudinal beam 43 and the cross beam 42 are perpendicular to each other, and the end of the longitudinal beam 43 is welded to the support platform 12.

[0055] In the above solution, the protective member 40 has a simple structure and is easy to manufacture.

[0056] According to some embodiments of the present application, a buffer support portion 44 is provided on the surface of the cross beam 42 facing the mounting frame 13, and the buffer support portion 44 is provided at the edge of the through hole 41 along the circumference of the through hole 41. A limit portion 24 is provided on the outer circumference of the steel hammer 20, and the limit portion 24 is used to abut against the buffer support portion 44.

[0057] The buffer support bag can be a spring protruding from the upper surface of the cross beam 42. The number of springs can be multiple, and the multiple springs are arranged at intervals around the edge of the through hole 41. The limiting portion 24 can be welded to the steel hammer 20, for example, a steel plate welded to the counterweight block 21. When the counterweight block 21 just contacts the rail, the limiting portion 24 may not contact the spring. At this time, the distance between the limiting portion 24 and the spring can be any value between 5mm and 10mm.

[0058] In the above scheme, when the steel hammer 20 is released by the electromagnetic suction mechanism 30 and hits the shock absorber, the limiting portion can abut against the buffer support portion 44, thereby limiting the steel hammer 20 in the direction of gravity, reducing the risk of the shock absorber being pierced by the steel hammer 20, causing the steel hammer 20 to pass through the through hole 41 and detach from the protective member 40, thereby further improving the safety of the testing process.

[0059] According to some embodiments of the present application, the vibration reduction effect measuring device 100 also includes a lifting mechanism 50, which is arranged on a surface of the mounting frame 13 that is away from the support platform 12. The support platform 12 is formed with a through hole for a lifting rope to pass through and connect to the lifting mechanism 50. The lifting mechanism 50 is used to lift the steel hammer 20.

[0060] In some embodiments, the lifting mechanism 50 may be an electric cable reel, which can be driven by a motor to rotate to pull the lifting rope and thus lift the steel hammer 20 .

[0061] In some embodiments, the suspension rope may be a nylon rope of sufficient length and strength to ensure that the steel hammer can fall freely and hit the workpiece to be tested after being released.

[0062] In the above scheme, by providing the lifting mechanism 50, the steel hammer 20 can be lifted so that after the measurement is completed, the steel hammer 20 is lifted to the electromagnetic suction mechanism 30 and adsorbed by the electromagnetic suction mechanism 30, thereby facilitating the next measurement.

[0063] According to some embodiments of the present application, the frame 10 also includes a lifting mechanism 60, which is arranged opposite to the bracket 11 in the horizontal direction, one end of the mounting frame 13 is slidably connected to the bracket 11, and the other end of the mounting frame 13 is connected to the execution end of the lifting mechanism 60, and the lifting mechanism 60 is used to adjust the position of the mounting frame 13 along the gravity direction.

[0064] In the above scheme, by setting up the lifting mechanism 60, the height of the mounting frame 13 can be adjusted, thereby adjusting the height of the electromagnetic suction mechanism 30, and then adjusting the release height of the steel hammer 20, so that the test conditions can be adjusted according to needs to provide different sizes of impact force for the shock absorber.

[0065] According to some embodiments of the present application, the mounting frame 13 is connected to the bracket 11 via a sleeve 61, and the sleeve 61 is slidably mounted on the bracket 11 along the gravity direction. The lifting mechanism 60 includes a screw and a nut box 62 disposed on the screw, and the mounting frame 13 is hinged to the nut box.

[0066] In some embodiments, a linear bearing may be provided between the sleeve 61 and the bracket 11, so that the sleeve 61 can drive the mounting frame 13 to slide relative to the bracket 11 along the direction of gravity. The lifting mechanism 60 may be a linear motor, which can rotate the lead screw when the motor is working, thereby driving the mounting frame 13 to move stably along the direction of gravity through the rotation of the nut box 62 and the sliding guide of the sleeve 61 and the bracket 11.

[0067] In other embodiments, the lifting mechanism 60 may also include equipment such as a cylinder.

[0068] According to some embodiments of the present application, a groove 120 is formed on the surface of the support table 12 facing the mounting frame 13, and a tray 70 is placed in the groove 120. A flange is provided at the edge of the tray 70. The flange is an annular structure along the circumference of the tray 70. The tray 70 is used to place the workpiece to be tested.

[0069] In some embodiments, the tray 70 may be made of stainless steel.

[0070] The tray 70 is placed in the groove 120 so that the tester can change the specifications of the pallet according to the size of the workpiece to be tested. On the one hand, it can ensure that the workpiece to be tested is stably placed in the tray 70 and limited by the flange. On the other hand, since the manufacturing cost of the tray 70 is low and it is easy to replace, the impact of each test on the support table 12 is reduced, thereby increasing the service life of the support table 12.

[0071] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vibration reduction effect measuring device, characterized in that: include: The frame comprises a bracket, a support platform and a mounting frame, wherein the bracket connects the support platform and the mounting frame, the support platform and the mounting frame are arranged relative to each other along the direction of gravity, and the support platform is used to place a workpiece to be tested; A steel hammer connected to the mounting frame via a suspension rope; An electromagnetic suction mechanism, disposed on the mounting frame, for absorbing or releasing the steel hammer so that the steel hammer strikes the workpiece to be tested; A protective member is connected to the bracket and is located between the support platform and the mounting frame. The protective member has a through hole penetrating along the direction of gravity. The through hole is used for the steel hammer to pass through and limits the steel hammer in the radial direction of the through hole.

2. The vibration reduction effect measuring device according to claim 1, characterized in that: The vibration reduction effect measuring device also includes a controller; the electromagnetic suction mechanism includes a large suction electromagnet and a switch switch, the large suction electromagnet is fixed to the surface of the mounting frame facing the support platform and connected to the switch switch, the switch switch is connected to the controller, and the controller controls the switch switch; The surface of the steel hammer facing the large-suction electromagnet is a flat surface, which is used for magnetic adsorption with the large-suction electromagnet.

3. The vibration reduction effect measuring device according to claim 1, characterized in that: The steel hammer includes a counterweight block and a hammer head which are connected to each other. The counterweight block is used to cooperate with the electromagnetic suction mechanism. The surface of the hammer head facing the support platform is an arc surface, and the hardness of the hammer head is 50HRC.

4. The vibration reduction effect measuring device according to claim 3, characterized in that: A rubber plate is arranged between the counterweight block and the hammer head along the gravity direction.

5. The vibration reduction effect measuring device according to claim 3, characterized in that: The protective member includes a crossbeam and a longitudinal beam, one end of the crossbeam is connected to the bracket, the other end of the crossbeam is connected to the longitudinal beam, one end of the longitudinal beam away from the crossbeam is connected to the support platform, and the through hole is formed in the crossbeam.

6. The vibration reduction effect measuring device according to claim 5, characterized in that: A buffer support portion is provided on the surface of the cross beam facing the mounting frame, and the buffer support portion is provided at the edge of the through hole along the circumference of the through hole; The outer circumferential surface of the steel hammer is provided with a limiting portion, and the limiting portion is used to abut against the buffer support portion.

7. The vibration reduction effect measuring device according to any one of claims 1 to 6, characterized in that: The vibration reduction effect measuring device also includes a lifting mechanism, which is arranged on the surface of the mounting frame away from the support platform. The support platform is formed with a through hole, and the through hole is for the suspension rope to pass through and connect to the lifting mechanism. The lifting mechanism is used to lift the steel hammer.

8. The vibration reduction effect measuring device according to any one of claims 1 to 6, characterized in that: The frame also includes a lifting mechanism, which is arranged opposite to the bracket in the horizontal direction, one end of the mounting frame is slidably connected to the bracket, and the other end of the mounting frame is connected to the execution end of the lifting mechanism, and the lifting mechanism is used to adjust the position of the mounting frame along the gravity direction.

9. The vibration reduction effect measuring device according to claim 8, characterized in that: The mounting frame is connected to the bracket via a sliding sleeve, and the sliding sleeve is slidably mounted on the bracket along the gravity direction; The lifting mechanism comprises a screw rod and a nut box arranged on the screw rod, and the mounting frame is hinged to the nut box.

10. The vibration reduction effect measuring device according to any one of claims 1 to 6, characterized in that: A groove is formed on the surface of the support platform facing the mounting frame, a tray is placed in the groove, a flange is provided at the edge of the tray, and the flange is an annular structure along the circumference of the tray. The tray is used to place the workpiece to be tested.

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