Amplitude locking mechanism of vibrating machine

Abstract

The utility model discloses a vibration machine amplitude locking mechanism which comprises a vibration source support, a transmission shaft is arranged on a bottom plate of the vibration source support in the horizontal direction, the driving end of the transmission shaft is connected with a motor through a coupler, and a connecting base body is arranged at the end, away from the driving end, of the transmission shaft. 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, the connecting end of the vibration source stand column is connected with the connecting shaft through a connecting component, the locking mechanism comprises a ball screw pair which is arranged in the vibration source support and located below the sliding body, and a lead screw in the ball screw pair is horizontally arranged between vibration source support side plates which are oppositely arranged. A limiting block used for limiting and locking the sliding body is arranged on the lead screw in a penetrating mode, and the limiting block is connected with a nut in the ball screw pair. According to the utility model, the requirement of single-source vibration of the vibration machine in the double-vibration-source frame vibration test device can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle frame detection, and in particular relates to an amplitude locking mechanism for a vibration machine. Background Art

[0002] In the domestic two-wheeled vehicle (such as bicycles) manufacturing industry, the evaluation and verification of 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 load-bearing capacity and structural stability of the frame, the industry generally uses advanced frame vibration test equipment to conduct high-intensity and high-frequency vibration tests. The frame vibration test device is usually a single-source or dual-source vibration arrangement. When using a dual-source vibration device for vibration testing, it is impossible to meet the separate vibration test requirements of the front / rear single vibration source. Therefore, for the vibration machine in the dual-source frame vibration test device, a locking mechanism is urgently needed to enable the dual-source vibration device to meet the single vibration test requirements. Summary of the invention

[0003] In view of the problems existing in the prior art, the utility model provides a vibration machine amplitude locking mechanism, which can meet the single-source vibration requirement of the vibration machine in a dual-vibration source frame vibration test device.

[0004] The utility model is implemented as follows: a vibration machine amplitude locking mechanism, the vibration machine comprises a vibration source bracket, a transmission shaft is arranged in the horizontal direction on the bottom plate of the vibration source bracket, the driving end of the transmission shaft is connected to the motor through a coupling, and a connecting base is arranged at the end of the transmission shaft away from the driving end, the connecting base is provided with a sliding body which can reciprocate radially along 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, the connecting end of the vibration source column is connected to the connecting shaft through a connecting member, the free end of the vibration source column passes through the vibration source bracket and extends to the outside of the vibration source bracket, the locking mechanism comprises a ball screw pair arranged in the vibration source bracket and below the sliding body, the screw in the ball screw pair is horizontally arranged between the side plates of the vibration source bracket arranged oppositely, the screw is penetrated by a limit block for limiting and locking the sliding body, and the limit block is connected to a nut in the ball screw pair.

[0005] Furthermore, the limit block includes an inclined surface structure tangent to the movement track of the connecting member, which facilitates the limit block to enter the lower part of the sliding body and realizes effective limit to the sliding body.

[0006] Furthermore, a proximity switch for controlling the opening and closing of the motor is arranged on the outer surface of the limit block, and the sensing end of the proximity switch faces the vibration source bracket, and the vibration source bracket is a metal bracket. When the limit block moves close to the end of the vibration source bracket, the sensing end of the proximity switch senses the vibration source bracket, thereby triggering the action of the switch, and then controlling the opening of the motor. When the limit block moves away from the side plate of the vibration source bracket, the proximity switch controls the closing of the motor, and the control of the motor is realized through the proximity switch. The dual limitation of the limit block and the proximity switch is realized, which is more reliable.

[0007] The utility model has the following advantages and technical effects: due to the adoption of the above technical scheme, the demand for single-source vibration of the vibration machine in the dual-vibration source frame vibration test device can be met, and when the limit block driven by the nut-screw pair is stuck under the vibration source, the motor can be stopped to achieve amplitude locking of the vibration machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the vibration machine provided by the embodiment of the utility model;

[0009] Figure 2 It is a schematic diagram of the vibration machine provided in the embodiment of the utility model in the direction of A.

[0010] In the figure: 1. vibration source bracket; 2. transmission shaft; 3. coupling; 4. motor; 5. vibration source column; 6. connecting shaft; 7. connecting member; 8. ball screw pair; 9. limit block; 10. proximity switch; 11. sliding body. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0012] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0013] like Figure 1 and Figure 2As shown, the present application provides an amplitude locking mechanism for a vibration machine, the vibration machine includes a vibration source bracket 1, a transmission shaft 2 is arranged on the bottom plate of the vibration source bracket 1 in a horizontal direction, the driving end of the transmission shaft 2 is connected to the motor 4 through a coupling 3, and a connecting base is arranged at the end of the transmission shaft 2 away from the driving end, and the connecting base is a cylindrical structure arranged concentrically with the transmission shaft 2.

[0014] A sliding body 11 which can reciprocate radially along the connecting base is arranged on the connecting base, and a connecting shaft 6 is arranged on the outer end face of the sliding body 11. Specifically, the sliding body includes a mounting base plate, and a connecting portion which can move within the connecting base plate is arranged on the mounting base plate on the mounting side relative to the connecting shaft; a vibration source column 5 is vertically arranged in the vibration source bracket 1, and the connecting end of the vibration source column 5 is connected to the connecting shaft 6 through a connecting member 7, and the connecting member 7 is a connecting rod, and the free end of the vibration source column 5 passes through the vibration source bracket 1 and extends to the outside of the vibration source bracket 1.

[0015] The locking mechanism includes a ball screw pair 8 arranged in the vibration source bracket 1 and located below the sliding body 11. The screw in the ball screw pair 8 is horizontally arranged between the relatively arranged side plates of the vibration source bracket 1. The screw can be rotated by electric or manual means. A limit block 9 is penetrated by the screw for limiting and locking the sliding body 11. The limit block 9 is connected to the nut in the ball screw pair 8.

[0016] Furthermore, the limit block 9 includes an inclined surface structure tangent to the motion track of the connecting member 7. This structure facilitates the limit block 9 to enter the bottom of the sliding body 11, thereby effectively limiting the sliding body 11.

[0017] Furthermore, a proximity switch 10 for controlling the opening and closing of the motor 4 is arranged on the outer surface of the limit block 9, and the sensing end of the proximity switch 10 faces the vibration source bracket 1, and the vibration source bracket 1 is a metal bracket. When the limit block 9 moves to the end close to the vibration source bracket 1, the sensing end of the proximity switch 10 senses the vibration source bracket 1, thereby triggering the action of the switch, and then controlling the opening of the motor 4. When the limit block 9 moves away from the side plate of the vibration source bracket 1, the proximity switch 10 controls the closing of the motor 4, and the control of the motor 4 is realized through the proximity switch 10. The double restriction of the limit block 9 and the proximity switch 10 is realized, which is more reliable.

[0018] Working process: When the motor 5 drives the transmission shaft 2 to rotate, the transmission shaft 2 drives the connecting base and the connecting shaft 6 to rotate. Since the connecting shaft is eccentrically arranged on the connecting base, the connecting component 7 drives the vibration source column 5 to reciprocate along the vertical direction of the vibration source bracket 1.

[0019] The screw in the ball screw pair 8 rotates, driving the limit block 9 to move toward the sliding body 11 through the screw nut. The upper end surface of the limit block is stuck with the end surface of the mounting base in the sliding body 11, so that the connecting component 7 can no longer drive the vibration source column 5 to reciprocate in the vertical direction along the vibration source bracket 1, and the motor stops.

[0020] By adopting the above technical scheme, the demand for single-source vibration of the vibration machine in the dual-vibration source frame vibration test device can be met. When the limit block 9 is driven by the nut-screw pair to be stuck under the vibration source, the motor 4 can be stopped to lock the amplitude of the vibration machine.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration machine amplitude locking mechanism, the vibration machine comprises a vibration source bracket, a transmission shaft is arranged on the bottom plate of the vibration source bracket in the horizontal direction, the 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 radially along 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, the connecting end of the vibration source column is connected to the connecting shaft through a connecting member, and the free end of the vibration source column penetrates the vibration source bracket and extends to the outside of the vibration source bracket, characterized in that The locking mechanism includes a ball screw pair arranged in the vibration source bracket and located below the sliding body. The screw in the ball screw pair is horizontally arranged between the relatively arranged vibration source bracket side plates. A limit block is penetrated by the screw for limiting and locking the sliding body. The limit block is connected to the nut in the ball screw pair.

2. The vibration machine amplitude locking mechanism according to claim 1, characterized in that: The limit block includes an inclined surface structure tangent to the movement trajectory of the connecting member.

3. The vibration machine amplitude locking mechanism according to claim 1 or 2, characterized in that: A proximity switch for controlling the opening and closing of the motor is arranged on the outer side surface of the limit block, and the sensing end of the proximity switch faces the vibration source bracket, which is a metal bracket.

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