Vibration machine with adjustable amplitude and frame vibration test device

Abstract

The utility model discloses a vibration machine with adjustable amplitude and a frame vibration test device, which belong to the technical field of frame detection and comprise a vibration source support, a transmission shaft is arranged on a bottom plate of the vibration source support along the horizontal direction, a driving end of the transmission shaft is connected with a motor through a coupler, and a connecting base body is arranged at the end part of the transmission shaft far away from the driving end. A sliding body capable of reciprocating in the radial direction of the connecting base body is arranged on the connecting base body, and a connecting shaft is arranged on the end face of the outer side of the sliding body. A vibration source stand column is vertically arranged in the vibration source support, a connecting component is hinged to the connecting end of the vibration source stand column, the vibration source stand column is connected with the connecting shaft through the connecting component, and the free end of the vibration source stand column penetrates through the vibration source support and extends towards the outside of the vibration source support. According to the utility model, the amplitude adjustment of the vibration machine is more visual and easy to operate, the adjustment process is simple, convenient and flexible, and the uncertainty and error in the adjustment process are reduced; and by simplifying an amplitude adjusting mechanism, the complexity and difficulty in the installation process are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of frame detection, and particularly relates to a vibrator with adjustable amplitude and a frame vibration test device. Background Art

[0002] In the domestic two-wheeler (such as bicycles, etc.) manufacturing industry, the evaluation and verification of the frame strength is a crucial link, which is directly related to the safety performance and service life of the vehicle. In order to comprehensively and accurately test the bearing capacity and structural stability of the frame, the industry generally adopts advanced frame vibration test devices to conduct high-intensity and high-frequency biaxial vibration tests. The core of this test method lies in simulating the dynamic loads experienced by the vehicle under extreme driving conditions (such as uneven roads, high-speed turning, etc.). By precisely controlling the vibration frequency and amplitude, dynamic impacts in two directions are simultaneously applied to the front axle and the rear axle of the frame. This process aims to test the toughness of the frame material, the firmness of the welding or connection parts, and the durability of the overall structure.

[0003] As the core component of the frame vibration test device, the performance of the vibrator directly affects the accuracy and reliability of the test results. Before starting the frame vibration test, in order to ensure that the test can accurately simulate the vibration environment under actual working conditions, it is necessary to adjust the amplitude of the vibrator to meet the test requirements. The existing vibrators adopt the structure of an eccentric shaft and an eccentric sleeve, and the amplitude is adjusted by adjusting the relative position of the eccentric shaft and the eccentric sleeve. However, the existing eccentric structure has the following problems: 1. The processing accuracy requirements for the eccentric shaft and the eccentric sleeve are extremely high, and any slight deviation may have an adverse impact on the precise control of the amplitude, which undoubtedly increases the manufacturing difficulty and cost; 2. During the installation process, due to the complex fitting relationship between components, it often requires experienced technicians to perform delicate operations to ensure the accuracy and stability of the installation, which increases the installation difficulty; 3. When adjusting the amplitude during the test process, it is often difficult to precisely control the displacement of the eccentric shaft. This not only increases the difficulty and time consumption of the adjustment, but also may introduce errors due to improper adjustment, affecting the accuracy of the test results; in addition, under long-term high-load operation, the eccentric shaft may also experience performance degradation due to wear or loosening, further affecting the stability and reliability of the test. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the utility model provides a vibrator with adjustable amplitude, which can make the amplitude adjustment of the vibrator more intuitive and easy to operate. The adjustment process is simple and flexible, reducing the uncertainty and errors during the adjustment process; and by simplifying the amplitude adjustment mechanism, the complexity and difficulty during the installation process are reduced.

[0005] The present utility model is realized as follows. A vibrating machine with adjustable amplitude includes a vibration source support. On the bottom plate of the vibration source support, a transmission shaft is arranged horizontally. The driving end of the transmission shaft is connected to a motor through a coupling. At the end of the transmission shaft away from the driving end, a connection base is provided. On the connection base, a sliding body that can reciprocate radially along the connection base is arranged. On the outer end face of the sliding body, a connection shaft is provided;

[0006] Inside the vibration source support, a vibration source column is arranged vertically. The connection end of the vibration source column is hinged with a connection member and is connected to the connection shaft through the connection member. The free end of the vibration source column penetrates through the vibration source support and extends to the outside of the vibration source support.

[0007] Further, on the end face of the connection base facing the vibration source column side, an installation groove is arranged radially along the connection base. Inside the connection base, a screw is arranged radially along the connection base. The threaded section of the screw is placed in the installation groove, and the head of the screw is located on the side wall of the connection base;

[0008] The sliding body includes an installation substrate. On the end face of the installation substrate opposite to the connection shaft, a connection part is provided. Inside the connection part, a screw hole for the screw to penetrate is arranged. The connection part is placed in the installation groove and is matched with the screw through the screw hole. By setting the screw and the connection part matched with the screw, rotating the screw can adjust the position of the sliding body, and thus adjust the eccentric distance between the sliding body and the connection base. Therefore, when adjusting the amplitude, only need to rotate the screw and move the sliding body to the required position. This design makes the adjustment of the amplitude fast and simple.

[0009] Further, a positioning sleeve is sleeved on the screw located in the installation groove.

[0010] Further, on the end face of the connection base facing the vibration source column side, a sliding groove is arranged radially along the connection base. Inside the sliding groove, a sliding block is arranged. The sliding body is connected to the sliding block. This enables the sliding body to slide smoothly along a preset track during movement, reduces the direct contact and friction with the connection base, and provides a stable guiding effect, ensuring that the sliding body will not deviate or shake during movement, thereby improving the stability and precision of vibration.

[0011] Further, the sliding groove is a T-shaped groove, and the cross-section of the sliding block is a T-shaped structure.

[0012] Further, a scale line is provided on the end face of the connection base corresponding to the lower end face of the sliding body. The 0 scale of the scale line corresponds to the center position of the connection base, and the scale values of the scale line gradually increase from the 0 scale to both sides. The setting of the scale line enables the operator to intuitively observe the position change of the sliding body relative to the center position of the connection base, thereby quickly and accurately judging and adjusting the amplitude; by reading the values on the scale line, the operator can precisely control the moving distance of the sliding body, reducing errors caused by human judgment or improper operation; when it is necessary to adjust to a specific amplitude, the operator only needs to quickly locate the corresponding position according to the scale line, without repeatedly trying and adjusting, thus improving the adjustment efficiency.

[0013] Further, a bearing seat is provided on the base of the vibration source bracket. A bearing for supporting the rotation of the transmission shaft is provided in the bearing seat, and the transmission shaft is arranged in the bearing seat through the bearing to realize the rotation of the transmission shaft.

[0014] Further, a bushing is sleeved on the vibration source column at the position where the vibration source bracket penetrates.

[0015] Further, the connecting member is a connecting rod.

[0016] On the other hand, the present application provides a vehicle frame vibration test device, including the vibrator described in any one of the above.

[0017] Advantages and technical effects of the present utility model: Due to the adoption of the above technical solution, the amplitude adjustment of the vibrator becomes more intuitive and easy to operate. The amplitude is adjusted by adjusting the eccentric distance between the slidable body that can reciprocate radially and the connection base. The adjustment process is simple and flexible, reducing the uncertainty and error in the adjustment process; and by simplifying the amplitude adjustment mechanism, the complexity and difficulty in the installation process are reduced. At the same time, the modular design also helps to improve the installation efficiency. Description of the Drawings

[0018] Figure 1 is a three-dimensional view of the overall structure of the vibrator provided by the embodiment of the present utility model;

[0019] Figure 2 is a schematic diagram of the connection structure of the transmission shaft, connection base, sliding body, connecting shaft and vibration source column provided by the embodiment of the present utility model;

[0020] Figure 3 is an exploded view of the connection structure of the transmission shaft, connection base, sliding body, connecting shaft and vibration source column provided by the embodiment of the present utility model.

[0021] In the figure: 1. Vibration source support; 2. Transmission shaft; 3. Coupling; 4. Motor; 5. Vibration source column; 6. Connection base; 6-1. Installation groove; 6-2. Screw; 6-3. Positioning sleeve; 6-4. Slide groove; 6-5. Slide block; 6-6. Scale line; 7. Sliding body; 7-1. Connection part; 8. Connection shaft; 9. Connection member. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] It should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0024] As Figures 1 to 3 shown, the present application provides a vibrating machine with adjustable amplitude, including a vibration source support 1. A transmission shaft 2 is horizontally arranged on the bottom plate of the vibration source support 1. The driving end of the transmission shaft 2 is connected to a motor 4 through a coupling 3. A connection base 6 is arranged at the end of the transmission shaft 2 far from the driving end. Specifically, the connection base 6 is a cylindrical structure concentric with the transmission shaft 2. A sliding body 7 that can reciprocate radially along the connection base 6 is arranged on the connection base 6. A connection shaft 8 is arranged on the outer end face of the sliding body 7;

[0025] A vibration source column 5 is vertically arranged in the vibration source support 1. The connection end of the vibration source column 5 is hinged with a connection member 9 and is connected to the connection shaft 8 through the connection member 9. The free end of the vibration source column 5 penetrates the vibration source support 1 and extends to the outside of the vibration source support 1.

[0026] Further, an installation groove 6-1 is radially arranged on the end face of the connection base 6 facing the vibration source column 5 along the radial direction of the connection base 6. A screw 6-2 is radially arranged in the connection base 6. The threaded section of the screw 6-2 is placed in the installation groove 6-1, and the head of the screw 6-2 is located on the side wall of the connection base 6; Preferably, a positioning sleeve 6-3 is sleeved on the screw 6-2 located in the installation groove 6-1.

[0027] The sliding body 7 includes a mounting substrate. A connecting portion 7-1 is provided on the end face of the mounting substrate on the opposite side of the connecting shaft 8. A screw hole for the screw 6-2 to pass through is provided in the connecting portion 7-1. The connecting portion 7-1 is placed in the mounting groove 6-1 and is matched with the screw 6-2 through the screw hole. By providing the screw 6-2 and the connecting portion 7-1 matched with the screw 6-2, rotating the screw 6-2 can adjust the position of the sliding body 7, and further adjust the eccentric distance between the sliding body 7 and the connecting base 6. Therefore, when adjusting the amplitude, only need to rotate the screw 6-2 and move the sliding body 7 to the required position. This design makes the adjustment of the amplitude fast and simple.

[0028] Further, on the end face of the connecting base 6 facing the vibration source column 5, a sliding groove 6-4 is provided along the radial direction of the connecting base 6. A slider 6-5 is provided in the sliding groove 6-4. The sliding body 7 is connected to the slider 6-5. This enables the sliding body 7 to slide smoothly along a preset track during movement, reduces the direct contact and friction with the connecting base 6, and provides a stable guiding function, ensuring that the sliding body 7 will not deviate or shake during movement, thereby improving the stability and accuracy of vibration. Preferably, the sliding groove 6-4 is a T-shaped groove, and the cross-section of the slider 6-5 is a T-shaped structure.

[0029] Further, on the end face of the connecting base 6 directly opposite to the lower end face of the sliding body 7, a scale line 6-6 is provided. The 0 scale of the scale line 6-6 is directly opposite to the center position of the connecting base 6, and the scale values of the scale line 6-6 gradually increase from the 0 scale to both sides. The setting of the scale line 6-6 enables the operator to visually observe the position change of the sliding body 7 relative to the center position of the connecting base 6, so as to quickly and accurately judge and adjust the amplitude size; by reading the value on the scale line 6-6, the operator can accurately control the moving distance of the sliding body 7, reducing the errors caused by human judgment or improper operation; when it is necessary to adjust to a specific amplitude, the operator only needs to quickly locate to the corresponding position according to the scale line 6-6, without repeated trial and error and adjustment, thereby improving the adjustment efficiency.

[0030] Preferably, a bearing seat is provided on the base of the vibration source bracket 1. A bearing for supporting the rotation of the transmission shaft 2 is provided in the bearing seat. The transmission shaft 2 is arranged in the bearing seat through the bearing to realize the rotation of the transmission shaft 2.

[0031] Preferably, a bushing is sleeved on the vibration source column 5 at the position where the vibration source bracket 1 penetrates.

[0032] Specifically, the connecting member 9 is a connecting rod. One end of the connecting rod is hinged to the connecting end of the vibration source column 5, and the other end is provided with a mounting hole for the installation of the connecting shaft 8.

[0033] On the other hand, the present application provides a frame vibration test device, including the vibration machine described in any one of the above.

[0034] Working process: When it is necessary to adjust the amplitude of the vibration machine, rotate the head of the screw 6-2 on the side wall of the connecting base body 6 to drive the screw 6-2 to rotate. The connecting part 7-1 of the sliding body 7 drives the sliding body 7 to move along the radial direction of the connecting base body 6 through the cooperation of the screw hole and the screw 6-2, thereby adjusting the eccentric distance between the axis of the connecting shaft 8 and the axis of the connecting base body 6. When the eccentricity increases, the amplitude of the vibration source support increases, and vice versa, realizing the adjustment of the amplitude of the vibration source support.

[0035] Due to the adoption of the above technical solution, the adjustment of the amplitude of the vibration machine becomes more intuitive and easy to operate. The amplitude is adjusted by adjusting the eccentric distance between the slidable body 7 that can reciprocate radially and the connecting base body 6. The adjustment process is simple and flexible, reducing the uncertainty and error in the adjustment process; and by simplifying the amplitude adjustment mechanism, the complexity and difficulty in the installation process are reduced. At the same time, the modular design also helps to improve the installation efficiency.

[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration machine with adjustable amplitude, characterized in that: It comprises a vibration source bracket, a transmission shaft is arranged on the bottom plate of the vibration source bracket in the horizontal direction, a driving end of the transmission shaft is connected to the motor through a coupling, a connecting base is arranged at the end of the transmission shaft away from the driving end, a sliding body which can reciprocate along the radial direction of the connecting base is arranged on the connecting base, and a connecting shaft is arranged on the outer end surface of the sliding body; A vibration source column is vertically arranged in the vibration source bracket, a connecting end of the vibration source column is hinged with a connecting component and is connected to a connecting shaft through the connecting component, and a free end of the vibration source column penetrates the vibration source bracket and extends to the outside of the vibration source bracket.

2. The vibration machine with adjustable amplitude according to claim 1, characterized in that: A mounting groove is arranged on the end surface of the connection base body facing the vibration source column side along the radial direction of the connection base body, a screw is arranged inside the connection base body along the radial direction of the connection base body, the threaded section of the screw is placed in the mounting groove, and the head of the screw is located on the side wall of the connection base body; The sliding body includes a mounting base plate, a connecting portion is arranged on the end surface of the mounting base plate on the opposite side of the connecting shaft, a screw hole for a screw to pass through is arranged in the connecting portion, the connecting portion is placed in the mounting groove and cooperates with the screw through the screw hole.

3. The vibration machine with adjustable amplitude according to claim 2, characterized in that: A positioning sleeve is sleeved on the screw located in the installation slot.

4. The vibration machine with adjustable amplitude according to claim 1 or 2, characterized in that: A slide groove is arranged on the end surface of the connection base body facing the vibration source column side along the radial direction of the connection base body, a sliding block is arranged in the slide groove, and the sliding body is connected to the sliding block.

5. The vibration machine with adjustable amplitude according to claim 4, characterized in that: The slide groove is a T-shaped groove, and the cross section of the slider is a T-shaped structure.

6. The vibration machine with adjustable amplitude according to claim 1, characterized in that: A scale line is arranged on the end face of the connection base body opposite to the lower end face of the sliding body, the 0 scale mark of the scale line is opposite to the center position of the connection base body, and the scale value of the scale line increases gradually from the 0 scale mark to both sides.

7. The vibration machine with adjustable amplitude according to claim 1, characterized in that: A bearing seat is arranged on the base of the vibration source bracket, and a bearing for supporting the rotation of the transmission shaft is arranged in the bearing seat. The transmission shaft is arranged in the bearing seat through the bearing to realize the rotation of the transmission shaft.

8. The vibration machine with adjustable amplitude according to claim 1, characterized in that: A shaft sleeve is sleeved on the vibration source column located at the penetration position of the vibration source bracket.

9. The vibration machine with adjustable amplitude according to claim 1, characterized in that: The connecting member is a connecting rod.

10. A vehicle frame vibration test device, characterized in that: The invention comprises a vibration machine as described in any one of claims 1 to 9.

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