A motorcycle frame fatigue testing device

Abstract

The invention discloses a motorcycle frame fatigue test device, which belongs to the field of motorcycle fatigue driving technology. The test device includes a support platform, a vertical support plate installed on the support platform, a vertical tube positioning hole is positioned and supported by a vertical tube positioning assembly installed on the vertical support plate, and a vibration mechanism for the frame is installed on the vertical support plate at the same time; the vertical support plate is respectively connected with a main beam tube support shaft, a front support tube support shaft, a flat fork hole support shaft, and a pedal hole support shaft through a plurality of plane adjustable limiters, and the plane adjustable limiter includes a U-shaped longitudinal slide rail, a longitudinal slider slidably installed in the longitudinal slide rail, a longitudinal groove is opened on the side wall of the longitudinal slide rail, a vertical slide bar is fixed on the back side of the longitudinal slide rail, and the vertical slide bar is slidably set in the vertical groove opened on the vertical support plate. The device of the invention can be tested for a variety of vehicle models with different specifications, saving the test cost, and providing more effective design data for the design of motorcycles.

Description

Technical Field

[0001] The invention belongs to the technical field of motorcycle fatigue testing, and in particular relates to a motorcycle frame fatigue testing device. Background Art

[0002] The fatigue durability of a motorcycle frame directly affects the driving safety of the motorcycle. After the frame design is completed, it is generally necessary to perform fatigue testing on the frame. Fatigue testing can preliminarily reveal the weak parts of the frame that are prone to metal fatigue problems, and provide suggestions for manufacturers to improve fatigue strength, thereby minimizing the casualties of riders caused by fatigue damage to the frame. Existing motorcycle frame fatigue testing devices can usually only test one specification of vehicle. Due to the complexity of motorcycle models, using fatigue testing devices of multiple specifications for testing will undoubtedly increase the testing cost. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a motorcycle frame fatigue testing device that can be used to test a variety of vehicle models with different specifications, thereby saving testing costs and providing more effective design data for motorcycle design.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention discloses a fatigue testing device for a motorcycle frame, wherein a seat tube positioning hole, a main beam tube positioning hole, a front support tube positioning hole, a fork shaft positioning hole and a pedal shaft positioning hole are formed on the frame, and the testing device comprises a supporting platform and a vertical supporting plate installed on the supporting platform, wherein the seat tube positioning hole is positioned and supported by a seat tube positioning assembly installed on the vertical supporting plate, and a vibration mechanism for the frame is simultaneously installed on the vertical supporting plate; the main beam tube supporting shaft, the front support tube supporting shaft, the fork hole supporting shaft and the pedal hole supporting shaft are respectively connected to the vertical supporting plate through a plurality of plane adjustable limit members, and the main beam tube supporting shaft, the front support tube supporting shaft, the fork hole supporting shaft and the pedal hole supporting shaft are respectively used for positioning the main beam tube The holes, front support tube positioning holes, fork shaft positioning holes, and pedal shaft positioning holes are used for positioning and supporting; the plane adjustable limiter comprises a U-shaped longitudinal slide rail, a longitudinal slider slidably installed in the longitudinal slide rail, a longitudinal groove is provided on the side wall of the longitudinal slide rail, a longitudinal slide bar matching the longitudinal groove is installed on the longitudinal slide bar, and the longitudinal slide bar is fixed to the longitudinal slide rail by a locking member; a vertical slide bar is fixed to the back side of the longitudinal slide rail, the vertical slide bar is slidably arranged in a vertical groove provided on the vertical support plate, and the vertical slide bar is fixed to the vertical support plate by a locking member, and a plurality of plane adjustable limiters are respectively connected to the main beam tube support shaft, the front support tube support shaft, the fork hole support shaft, and the pedal hole support shaft through the longitudinal slider.

[0006] Furthermore, the main beam tube support shaft, front support tube support shaft, flat fork hole support shaft, and pedal hole support shaft have the same structure, all of which include a center shaft, a tail seat fixed at the tail end of the center shaft, a limit seat fixed in the middle of the center shaft, and a slide seat slidably arranged at the front end of the center shaft, the limit seat has limit grooves evenly distributed along the circumference, a support block is radially slidably arranged in the limit groove, an arc-shaped support plate is connected to the outer side of the support block, inner conical surfaces are formed at both ends of the support block, the tail seat and the end of the slide seat facing the support block correspondingly have outer conical surfaces, and a pushing mechanism for pushing the slide seat to slide is installed at the front end of the center shaft.

[0007] Furthermore, the pushing mechanism includes a nut, the nut is threadedly matched with the central axis, the inner end of the nut is in contact with the slide seat, and an elastic supporting device is installed between the support block and the tailstock.

[0008] Furthermore, the riser positioning assembly includes an upper positioning column and a lower positioning column, the upper positioning column and the lower positioning column are respectively connected to the vertical support plate through an inclined limit piece, and the upper positioning column and the lower positioning column are respectively used to position and support the upper and lower ends of the riser.

[0009] Furthermore, the tilt limiter includes a U-shaped tilt rail and a tilt slider slidably installed in the tilt rail, a track groove is opened on the side wall of the tilt rail, a track slide bar matching the track groove is installed on the tilt slider, and the track slide bar is fixed to the tilt rail by a locking member; an tilt slide bar is fixed to the back side of the tilt rail, the tilt slide bar is slidably set in an inclined groove opened on a vertical support plate, and the tilt slide bar is fixed to the vertical support plate by a locking member, the tilt slider is connected to a support rod, and the tilt limiter is connected to an upper positioning column or a lower positioning column through the support rod.

[0010] Furthermore, the upper positioning column and the lower positioning column are provided with through holes for the support rod to slide through, and the support rod is fixed to the upper positioning column or the lower positioning column by a locking piece.

[0011] Furthermore, the vibration mechanism includes a vibration tube connected to the longitudinal beam tube of the frame, a rotating shaft eccentrically connected to the vibration tube, and a mass block fixed to the rotating shaft, and the rotating shaft is connected to the motor.

[0012] Furthermore, a transverse slide rail is fixed on the outer side of the vibration cylinder, a transverse slider is slidably arranged inside the transverse slide rail, and the transverse slider and the transverse slide rail are locked by a locking piece; the transverse slider is hinged to the support through an adjustable telescopic rod, and a fastener is hingedly installed on the support, and the fastener is used to connect and fix with the longitudinal beam tube of the frame.

[0013] Furthermore, the adjustable telescopic rod includes a rod body, a first hinge joint and a second hinge joint respectively threadedly connected to two ends of the rod body, the first hinge joint is hinged to the transverse slider, and the second hinge joint is hinged to the support.

[0014] The beneficial effects of the present invention are:

[0015] The present invention discloses a fatigue testing device for a motorcycle frame, wherein a main beam tube support shaft, a front support tube support shaft, a fork hole support shaft and a pedal hole support shaft are respectively used for positioning and supporting a main beam tube positioning hole, a front support tube positioning hole, a fork shaft positioning hole and a pedal shaft positioning hole, and then a vibration mechanism is used to perform a vibration test on the frame. Compared with the traditional method of directly fixing the frame for testing, the present invention uses shafts to position the holes, which better simulates the actual driving environment and can make the test results more accurate.

[0016] In the test device disclosed in the present invention, the support shaft is installed by using a flat adjustable limiter, and the position of the support shaft can be adjusted according to the conditions of different frame holes, so that a set of devices disclosed in the present invention can be used to test vehicle models of various specifications, saving testing costs.

[0017] In the device disclosed in the present invention, the planar adjustable limiter adopts a combination of a longitudinal slide rail and a slide rod. The device has a simple structure and is more convenient to adjust, which can save manufacturing costs. After being fixed, the structure is stable and can meet testing requirements.

[0018] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0020] Figure 1 The structure of the fatigue testing device of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the fatigue testing device of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 It is a structural schematic diagram of the vibration mechanism;

[0023] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 It is a schematic diagram of the structure of the upper positioning column and the lower positioning column;

[0025] Figure 6 for Figure 5 The enlarged view of point B in the middle;

[0026] Figure 7 for Figure 5 Enlarged view of point C in the middle;

[0027] Figure 8 It is a schematic diagram of the structure of the pedal hole support shaft;

[0028] Fig. 9 This is a cross-sectional view of the pedal hole support shaft.

[0029] The markings in the attached drawings are as follows: riser positioning hole 1, main beam tube positioning hole 2, front support tube positioning hole 3, flat fork shaft positioning hole 4, pedal shaft positioning hole 5, support platform 6, vertical support plate 7, riser positioning assembly 8, vibration mechanism 9, plane adjustable limiter 10, main beam tube support shaft 11, front support tube support shaft 12, flat fork hole support shaft 13, pedal hole support shaft 14, longitudinal slide rail 15, longitudinal slider 16, longitudinal slide bar 17, vertical slide bar 18, vertical slot 19, center axis 20, tail seat 21, limit seat 22, slide seat 23, limit Groove 24, support block 25, arc-shaped support plate 26, inner cone 27, outer cone 28, pushing mechanism 29, elastic support device 30, upper positioning column 31, lower positioning column 32, inclined slide rail 33, inclined slider 34, track groove 35, track slide bar 36, inclined slide bar 37, inclined groove 38, support rod 39, vibration cylinder 40, rotating shaft 41, mass block 42, motor 43, transverse slide rail 44, transverse slider 45, adjustable telescopic rod 46, support 47, fastener 48, rod body 49, first hinge joint 50, second hinge joint 51. DETAILED DESCRIPTION

[0030] like Figures 1 to 9 As shown, the present invention discloses a motorcycle frame fatigue test device, the frame adopts the structure of an existing mainstream vehicle model, the main beam tube, the vertical tube and the front support tube installed at the front end of the main beam tube, the longitudinal beam tube installed at the rear side of the main beam tube, and the lower extension part of the main beam tube is connected to the flat fork and the pedal. Correspondingly, the frame is formed with a vertical tube positioning hole 1, a main beam tube positioning hole 2, a front support tube positioning hole 3, a flat fork shaft positioning hole 4 and a pedal shaft positioning hole 5, through the above positioning holes, it can be convenient to cooperate with the test device.

[0031] Specifically, the test device of the present invention comprises a support platform 6, a vertical support plate 7 mounted on the support platform 6, the vertical support plate 7 is perpendicular to the upper surface of the support platform 6, and the entire vertical support plate 7 is located in a vertical plane. After being matched with the frame, the frame is kept vertical as much as possible, that is, close to the riding state.

[0032] The vertical pipe positioning hole 1 is positioned and supported by the vertical pipe positioning assembly 8 installed on the vertical support plate 7, and the vertical pipe is accurately limited, which is helpful to simulate the scene during normal driving. A vibration mechanism 9 for the frame is also installed on the vertical support plate 7; in some other embodiments, the vibration mechanism 9 can directly use a vibrator, which can be set on the frame to vibrate or shake the frame.

[0033] As a further improvement of the present embodiment, the vertical support plate 7 is respectively connected with a main beam tube support shaft 11, a front support tube support shaft 12, a flat fork hole support shaft 13, and a pedal hole support shaft 14 through a plurality of planar adjustable limit members 10, and each planar adjustable limit member 10 corresponds to a support shaft, and the main beam tube support shaft 11, the front support tube support shaft 12, the flat fork hole support shaft 13, and the pedal hole support shaft 14 are respectively used for positioning and supporting the main beam tube positioning hole 2, the front support tube positioning hole 3, the flat fork shaft positioning hole 4, and the pedal shaft positioning hole 5; the holes are positioned by using the shaft, and the limiting method corresponds to the limiting method of the frame during traditional driving, thereby better simulating the actual driving environment and making the test results more accurate.

[0034] Specifically, with the length direction of the frame as the longitudinal direction, the plane adjustable limiter 10 disclosed in the present invention includes a U-shaped longitudinal slide rail 15, a longitudinal slider 16 slidably mounted in the longitudinal slide rail 15, a longitudinal groove is provided on the side wall of the longitudinal slide rail 15, and the longitudinal groove also extends in the longitudinal direction, and a longitudinal slide bar 17 matching the longitudinal groove is installed on the longitudinal slider 16, and both ends of the longitudinal slide bar 17 extend from the longitudinal groove, and can slide along the length direction of the longitudinal groove, and limit the position through the longitudinal groove. The longitudinal slide bar 17 is fixed to the longitudinal slide rail 15 by a locking member; the locking member adopts a nut, and the nut is threadedly matched with the longitudinal slide bar 17. When the longitudinal slide bar 17 slides into place, the longitudinal slide bar 17 can be fixed to the longitudinal slide rail 15 by the nut.

[0035] Similar to the above-mentioned matching method, a vertical slide bar 18 is fixed on the back side of the longitudinal slide rail 15. The vertical slide bar 18 is slidably set in a vertical groove 19 provided on the vertical support plate 7. The vertical slide bar 18 is fixed to the vertical support plate 7 by a locking member. The locking member also adopts a nut to fix the vertical slide bar 18 from the back side of the vertical support plate 7. A plurality of plane adjustable limit members 10 are respectively connected to the main beam tube support shaft 11, the front support tube support shaft 12, the flat fork hole support shaft 13, and the pedal hole support shaft 14 through the longitudinal slider 16. The axial direction of the support shaft is along the normal direction of the plane of the longitudinal slider 16. The embodiment of the present invention adopts a combination of the longitudinal slide rail 15 and the slide bar. The device structure is simple, more convenient when adjusting, and the structure is stable after fixing, which can meet the test requirements.

[0036] In some other embodiments, a plurality of T-slots are provided on the support platform 6, a bottom plate is provided at the bottom of the vertical support plate 7, a connection hole is installed on the bottom plate, and the bottom plate and the T-slots are connected by bolts, so that the bottom plate can be connected and fixed between the support platforms 6.

[0037] In this embodiment, the main beam tube support shaft 11, the front support tube support shaft 12, the flat fork hole support shaft 13, and the pedal hole support shaft 14 have the same structure. Taking the pedal hole support shaft 14 as an example, the pedal hole support shaft 14 includes a central shaft 20, a tail seat 21 fixed at the tail end of the central shaft 20, a limit seat 22 fixed in the middle of the central shaft 20, and a slide seat 23 slidably arranged at the front end of the central shaft 20. One end of the central shaft 20 is fixed to the longitudinal slider 16, and the other end extends outward toward the normal direction of the longitudinal slider 16. The tail seat 21 is located near the end where the longitudinal slider 16 is located. The limit slots 24 are evenly distributed along the circumference on the limit seat 22. A support block 25 is slidably arranged in the radial direction in the limit slot 24. The limit slot 24 is used to limit the support block 25. When the two ends of the support block 25 are respectively matched with the tail seat 21 and the slide seat 23, the support block 25 can be displaced radially outward under the limiting action of the limit slot 24.

[0038] The outer side of the support block 25 is connected with an arc-shaped support plate 26, and the four arc-shaped support plates 26 form a cylindrical support cylinder. The two ends of the support block 25 are formed with inner conical surfaces 27, and the tailstock 21 and the end of the slide 23 facing the support block 25 are correspondingly formed with outer conical surfaces 28, and the front end of the central shaft 20 is installed with a pushing mechanism 29 for pushing the slide 23 to slide. When the outer conical surfaces 28 of the tailstock 21 and the slide 23 contact the inner conical surface 27 of the support block 25 inwardly, the support block 25 can be driven to move radially, and the support block 25 can drive the arc-shaped support plate 26 to move outward, thereby realizing the tension installation of the positioning hole, and can adapt to the positioning of positioning holes of different sizes, thereby meeting the needs of different vehicle sizes.

[0039] In some other embodiments, the pushing mechanism 29 may use a hydraulic cylinder to directly push the slide 23 tightly. However, this method requires reserving an installation position for the hydraulic cylinder on the central axis 20, which is difficult to manufacture and install.

[0040] In this embodiment, the pushing mechanism 29 includes a nut, which is threadedly matched with the central shaft 20, and the inner end of the nut is in contact with the slide 23. An elastic support device 30 is installed between the support block 25 and the tailstock 21. After rotating the nut, the slide 23 can be pushed to move, realizing the basic need of tightening. When loosening, the nut is rotated in the opposite direction, and the support block 25 is restored to its original position under the driving action of the elastic support device 30, which is more convenient to operate. The elastic support device 30 of the embodiment of the present invention adopts a spring, which is sleeved on the outer side of the central shaft 20, and the device structure is more compact and more stable to use.

[0041] In this embodiment, the vertical pipe positioning assembly 8 includes an upper positioning column 31 and a lower positioning column 32, which are respectively connected to the vertical support plate 7 through an inclined stopper, and the upper positioning column 31 and the lower positioning column 32 are respectively used to position and support the upper and lower ends of the vertical pipe. After positioning, the upper positioning column 31 and the lower positioning column 32 are moved by the inclined stopper to facilitate removal from the vertical pipe without interference.

[0042] In some other embodiments, the tilt limit member can be connected to the vertical support plate 7 by means of an electromagnet. When the upper positioning column 31 and the lower positioning column 32 need to be fixed, the electromagnet is energized to tightly adsorb the positioning column on the vertical support plate 7. However, the connection using the above method is unstable and the control process is complicated.

[0043] In this embodiment, the tilt limiter includes a U-shaped tilt rail 33, a tilt slider 34 slidably mounted in the tilt rail 33, a track groove 35 is provided on the side wall of the tilt rail 33, a track slide bar 36 matching the track groove 35 is installed on the tilt slider 34, and the track slide bar 36 is fixed to the tilt rail 33 by a locking member; a tilt slider 37 is fixed to the back side of the tilt rail 33, and the tilt slider 37 is slidably set in an inclined groove 38 provided on the vertical support plate 7, and the tilt slider 37 is fixed to the vertical support plate 7 by a locking member, and the tilt slider 34 is connected to a support rod 39, and the tilt limiter is connected to the upper positioning column 31 or the lower positioning column 32 through the support rod 39. The control method of the tilt limiter is similar to that of the planar adjustable limiter 10, and will not be repeated here.

[0044] In this embodiment, through holes are provided on the upper positioning column 31 and the lower positioning column 32 for the support rod 39 to slide through, and the support rod 39 is fixed to the upper positioning column 31 or the lower positioning column 32 by a locking member. The position of the upper positioning column 31 on the support rod 39 can be adjusted as needed, so as to position the risers of different models and different normal distances, and the adaptability is better.

[0045] In this embodiment, the vibration mechanism 9 includes a vibration tube 40 connected to the longitudinal beam tube of the frame, a rotating shaft 41 eccentrically connected to the vibration tube 40, and a mass block 42 fixed to the rotating shaft 41, and the rotating shaft 41 is connected to the motor 43. A transverse slide rail 44 is fixed to the outside of the vibration tube 40, and a transverse slider 45 is slidably arranged in the transverse slide rail 44, and the transverse slider 45 is locked with the transverse slide rail 44 by a locking member; the transverse slider 45 is hinged to the support 47 through an adjustable telescopic rod 46, and a fastener 48 is hingedly installed on the support 47, and the fastener 48 is used to connect and fix with the longitudinal beam tube of the frame. By sliding the transverse slider 45, the fastener 48 can be connected to various points on the longitudinal beam tube as needed to meet the needs of different vibration points. The rotating shaft 41 is installed on the vertical support plate 7 through a rubber block, which can reduce the transmission of vibration to the vertical support plate 7.

[0046] In this embodiment, the adjustable telescopic rod 46 includes a rod body 49, a first hinge joint 50 and a second hinge joint 51 respectively threadedly connected to both ends of the rod body 49, the first hinge joint 50 is hinged to the transverse slider 45, and the second hinge joint 51 is hinged to the support 47. The length of the adjustable telescopic rod 46 can be adjusted by rotating the hinge joint to extend the length of the rod body 49, which is convenient to adjust and more stable when used.

[0047] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A motorcycle frame fatigue testing device, wherein the frame is formed with a seat tube positioning hole, a main beam tube positioning hole, a front support tube positioning hole, a fork shaft positioning hole and a pedal shaft positioning hole, characterized in that: The testing device comprises a supporting platform and a vertical supporting plate installed on the supporting platform, the vertical tube positioning hole is positioned and supported by a vertical tube positioning assembly installed on the vertical supporting plate, and a vibration mechanism for a vehicle frame is installed on the vertical supporting plate at the same time; the vertical supporting plate is respectively connected with a main beam tube supporting shaft, a front support tube supporting shaft, a flat fork hole supporting shaft, and a pedal hole supporting shaft through a plurality of plane-adjustable limiting members, and the main beam tube supporting shaft, the front support tube supporting shaft, the flat fork hole supporting shaft, and the pedal hole supporting shaft are respectively used to position and support the main beam tube positioning hole, the front support tube positioning hole, the flat fork shaft positioning hole, and the pedal shaft positioning hole; the plane-adjustable limiting member comprises a U-shaped longitudinal slide rail, a longitudinal slider slidably installed in the longitudinal slide rail, a longitudinal groove is opened on the side wall of the longitudinal slide rail, a longitudinal slide bar cooperating with the longitudinal groove is installed on the longitudinal slide bar, and the longitudinal slide bar is fixed to the longitudinal slide rail by a locking member; the longitudinal The top of the sliding seat has a plurality of adjustable lengths, and the rear end of the sliding seat is connected to the front end of the sliding seat by a plurality of adjustable lengths.

2. A motorcycle frame fatigue testing device according to claim 1, characterized in that: The pushing mechanism comprises a nut, the nut is threadably matched with the central axis, the inner end of the nut is in contact with the slide seat, and an elastic supporting device is installed between the supporting block and the tailstock.

3. A motorcycle frame fatigue testing device according to claim 1, characterized in that: The riser positioning assembly includes an upper positioning column and a lower positioning column, wherein the upper positioning column and the lower positioning column are respectively connected to the vertical support plate through an inclined limit piece, and the upper positioning column and the lower positioning column are respectively used to position and support the upper and lower ends of the riser.

4. A motorcycle frame fatigue testing device according to claim 3, characterized in that: The tilt limiter comprises a U-shaped tilt rail and a tilt slider slidably installed in the tilt rail, a track groove is provided on the side wall of the tilt rail, a track slide bar matching the track groove is installed on the tilt slider, and the track slide bar is fixed to the tilt rail by a locking member; an tilt slide bar is fixed to the back side of the tilt rail, the tilt slide bar is slidably arranged in an inclined groove provided on a vertical support plate, and the tilt slide bar is fixed to the vertical support plate by a locking member, the tilt slider is connected to a support rod, and the tilt limiter is connected to an upper positioning column or a lower positioning column through the support rod.

5. A motorcycle frame fatigue testing device according to claim 4, characterized in that: The upper positioning column and the lower positioning column are provided with through holes for the support rod to slide through, and the support rod is fixed to the upper positioning column or the lower positioning column by a locking piece.

6. A motorcycle frame fatigue testing device according to any one of claims 1 to 5, characterized in that: The vibration mechanism comprises a vibration tube connected to the longitudinal beam tube of the frame, a rotating shaft eccentrically connected to the vibration tube, and a mass block fixed to the rotating shaft, wherein the rotating shaft is connected to the motor.

7. A motorcycle frame fatigue testing device according to claim 6, characterized in that: A transverse slide rail is fixed on the outer side of the vibration cylinder, a transverse slider is slidably arranged inside the transverse slide rail, and the transverse slider and the transverse slide rail are locked by a locking piece; the transverse slider is hinged to the support through an adjustable telescopic rod, and a fastener is hingedly installed on the support, and the fastener is used to be connected and fixed to the longitudinal beam tube of the frame.

8. A motorcycle frame fatigue testing device according to claim 7, characterized in that: The adjustable telescopic rod comprises a rod body, a first hinge joint and a second hinge joint respectively threadedly connected at two ends of the rod body, the first hinge joint is hinged to the transverse slider, and the second hinge joint is hinged to the support.

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