A device for testing the load-bearing capacity of an electric bicycle frame

Abstract

The invention relates to the technical field of electric bicycle frame testing, and discloses an electric bicycle frame load-bearing capacity testing device, which is used for the electric bicycle frame load-bearing capacity testing, and comprises a device base, a support frame arranged above the device base, an arc-shaped flip assembly and a support flip mechanism, a movable pressing assembly sliding on the top of the support frame, and a control host arranged on one side of the device base. When the frame needs to be subjected to horizontal fatigue resistance, seat load, two-side load and impact resistance tests, a connecting block is extended from a telescopic cylinder in a vertical direction of a connecting groove to be connected with a rotating block, and a positioning column is moved in a positioning groove to limit and fix the frame; when the frame needs to be subjected to a front-end impact resistance test, a connecting block is extended from a telescopic cylinder in a horizontal direction of the connecting groove to be connected with the rotating block, so that the frame can be connected to devices with different functions, and the frame can be tested at different angles and postures, so as to improve the accuracy and reliability of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of electric bicycle frame testing, and in particular to a device for testing the load-bearing capacity of an electric bicycle frame. Background Art

[0002] The electric bicycle frame load-bearing capacity testing device is mainly used to test the load-bearing capacity of the electric bicycle frame under different loads and working conditions, so as to evaluate the strength and durability of the frame, including the strength of the frame when it bears a certain static load, the strength when it bears various dynamic loads in motion, and the fatigue resistance under long-term repeated loads.

[0003] The patent publication number CN218917049U discloses a frame load-bearing capacity testing device for bicycle manufacturing. After the front head tube and the front fork mold are movably inserted to provide positioning for the entire frame body, the seat tube in the frame body is inserted into the slot of the middle axis and placed into the positioning slot opened by the movable block. The fixed shaft fixes the movable block and the middle axis slot at the lower end of the seat tube. The seat tube of the frame body and the movable block are kept fixed. The movable block is driven to move from the threaded rod to the tail end of the threaded rod by the rotation of the threaded rod. The stronger the tensile capacity of the seat tube in the frame body when fixed to the upper tube, the lower tube and the front head tube is, the stronger the load-bearing capacity is. Through this testing method, all fixed structures of the entire frame body are involved in the detection, thereby ensuring the integrity of the test results.

[0004] The prior art has the following defects:

[0005] Unable to change the shape of the frame to conduct multi-directional load-bearing capacity testing: During actual use, electric bicycles will experience a variety of different working conditions and stress conditions, such as turning, bumps, uneven roads, sudden acceleration, sudden braking, etc. These working conditions will cause the direction and magnitude of the frame force to change continuously. If the test device can only load the frame in a single direction, such as only performing a vertical load test, then it cannot fully simulate the multi-directional stresses that the frame is subjected to during actual riding, such as loads from complex conditions such as turning, tilting, bumpy roads or crosswinds. Therefore, it is necessary to set up an adjustable support device that can allow the frame to be tested at different angles and postures, simulate complex riding conditions, and collect the frame's stress state in real time to improve the accuracy and reliability of the test results.

[0006] Unable to adapt to frames of various sizes: Electric bicycles are usually designed with frames of various sizes according to different user groups and usage scenarios, such as children's frames, adult frames, urban frames, mountain frames, etc. The test device needs to be compatible with these frames of different sizes to ensure that the load-bearing capacity of all models meets the standards. If a test device cannot adapt to frames of different sizes, the equipment needs to be replaced or adjusted each time a frame of different sizes is tested, which will greatly increase the cost and time of research and development. Therefore, it is necessary to set up adjustable support devices and fixtures so that the test device can quickly adapt to frames of different sizes, ensure the flexibility and versatility of the device, and achieve the effect of improving test flexibility, efficiency, and accuracy and consistency of results. Summary of the invention

[0007] In view of the problems in the prior art that the shape of the frame cannot be changed to perform multi-directional load-bearing capacity testing and cannot be applied to frames of various sizes, a load-bearing capacity testing device for an electric bicycle frame is proposed.

[0008] The present application provides an electric bicycle frame load-bearing capacity testing device, the purpose of which is to: by setting a flip connection component connected to a horizontal stretching component and an arc flip component respectively, the frame can be tested at different angles and postures to improve the accuracy and reliability of the test results, and by setting a head tube clamping component and a rear fork clamping component, frames of different sizes can be quickly clamped, thereby achieving the effect of improving test flexibility, efficiency, and result accuracy and consistency.

[0009] The technical solution of the present invention is: an electric bicycle frame load-bearing capacity testing device, used for testing the load-bearing capacity of an electric bicycle frame, comprising a device base, a support frame arranged above the device base, an arc-shaped flip assembly and a support flip mechanism, a mobile pressing assembly sliding on the top of the support frame, and a control host arranged on one side of the device base, wherein the support flip mechanism comprises a head tube clamping assembly and a rear fork clamping assembly respectively connected to the front and rear ends of the electric bicycle frame, and a flip connection assembly connected to the head tube clamping assembly;

[0010] The flip connection assembly includes a connection block that is clamped inside the head pipe clamping assembly, the outer wall of the connection block is slidably connected with a telescopic cylinder, the outer wall of the telescopic cylinder is provided with a clamping groove, the inner wall of the connection block is movably connected with a clamping column, the clamping column is clamped with the clamping groove, and the position of the clamping column in the clamping groove can adjust the extension length of the connection block.

[0011] By adopting the above scheme, the head tube clamping assembly is respectively connected with the two flip connection assemblies. When the frame needs to be subjected to horizontal fatigue resistance, seat load, two-side load and impact resistance tests, a connecting block is extended from the telescopic cylinder in the vertical direction of the head tube clamping assembly to be connected with the rotating block, and the locking column is moved in the locking groove to limit and fix it; when the front-end impact resistance test of the frame needs to be performed, a connecting block is extended from the telescopic cylinder in the horizontal direction of the head tube clamping assembly to be connected with the rotating block, so that the frame can be connected with devices with different functions, and the frame can be tested at different angles and postures, so as to improve the accuracy and reliability of the test results.

[0012] Furthermore, the head tube clamping assembly includes a replaceable tube plug that fits inside the head tube of the electric bicycle frame, the outer wall of the replaceable tube plug is threadedly connected to a clamping movable seat, the inner wall of the clamping movable seat is slidably connected to two limiting round rods, the inner wall of the clamping movable seat is rotatably connected to a locking bolt, the clamping movable seat is locked to the outer wall of the limiting round rod by the locking bolt, a rotating block is rotatably connected between the two limiting round rods, a plurality of connecting grooves are opened inside the rotating block, and the inner wall of the connecting groove is clamped with the outer wall of the connecting block.

[0013] By adopting the above scheme, two replaceable pipe plugs that fit the inner wall of the frame head tube are selected, and they are respectively threaded into the two clamping movable seats, and then the two clamping movable seats are slid on the limiting round rod, so that the two replaceable pipe plugs are respectively inserted into the two ends of the frame head tube, and then the locking bolts are tightened to connect the frame head tube and the limiting round rod as a whole, and then the rotating block is rotated at the bottom of the limiting round rod to adjust the orientation of the connecting groove so that the connecting groove is aligned with the flip connecting components in the vertical direction and the horizontal direction. Frames of different sizes can be quickly clamped, thereby achieving the effect of improving test flexibility, efficiency, and accuracy and consistency of results.

[0014] Furthermore, the rear fork clamping assembly includes two bolt clamping rods hinged to the outer wall of the rear fork of the electric bicycle frame, a rotating column is fixedly connected between the two bolt clamping rods, the outer wall of the rotating column is rotatably connected to a flip column, the outer wall of the flip column is rotatably connected to a clamping seat, and the bottom of the clamping seat is fixedly connected to the top of the device base.

[0015] By adopting the above scheme, the two rear forks at the rear of the frame are respectively clamped between the two bolt clamping rods and the bolts are tightened, so that the two rear forks at the rear of the frame are connected to the rotating column as a whole, and can be flipped through the flip column and the clamping seat with the rotating column as the axis.

[0016] Furthermore, the supporting flipping mechanism also includes a horizontal stretching assembly arranged on the top of the equipment base, and the horizontal stretching assembly includes an output cylinder fixedly connected to the top of the equipment base, and the output end of the output cylinder is fixedly connected to the stretching base, and the bottom of the stretching base is slidably connected to multiple sliding rods, and the multiple sliding rods are all fixedly connected to the inner wall of the equipment base.

[0017] Furthermore, the flip connection assembly located above the stretching base also includes a slide groove opened on the inner wall of the telescopic cylinder, the inner wall of the slide groove is slidably connected with a slider, the bottom of the slider is fixedly connected with a flip handwheel, the outer wall of the flip handwheel is rotatably connected to the inner wall of the telescopic cylinder, the outer wall of the flip handwheel is opened with a flip thread, and the outer wall of the flip thread is threadedly connected to the inner wall of the stretching base.

[0018] By adopting the above scheme, by running the output cylinder, the output end of the output cylinder pushes and pulls the stretching base to slide on the sliding rod and apply force, so as to achieve the effect of testing the horizontal fatigue resistance, and the position of the mobile downward pressure component on the support frame can be adjusted and operated to achieve the effect of testing the bearing capacity of the seat, and the flip hand wheel can be rotated to make the flip thread on the flip hand wheel rotate with the thread in the stretching base, thereby driving the slider on the flip hand wheel to slide inside the telescopic cylinder and turn synchronously, so that the frame is flipped, and the mobile downward pressure component is operated to apply pressure and impact on the side of the frame, so as to achieve the effect of testing the bearing capacity and impact resistance of both sides.

[0019] Furthermore, the movable downward pressure assembly includes a hydraulic device slidably connected to the top of the support frame, and two multi-section telescopic rods are fixedly connected to the bottom of the hydraulic device. Downward pressure blocks are provided at the bottom of the two multi-section telescopic rods, one of the multi-section telescopic rods is rotatably connected to the downward pressure block, and the other multi-section telescopic rod is clamped with the downward pressure block.

[0020] By adopting the above scheme, by adjusting the position of the hydraulic device on the support frame and running it, the lower pressure block applies pressure and impact to the seat through the multi-section telescopic rod, so as to achieve the effect of testing the load-bearing capacity and impact resistance of each position of the frame.

[0021] Furthermore, the arc-shaped flip assembly includes two support seats fixedly connected to the top of the equipment base, and the interiors of the two support seats are fixedly connected to a rotating drum, and the interior of the rotating drum is rotatably connected to a rope winding rod.

[0022] Furthermore, an arc-shaped movable frame is fixedly connected between the tops of the two support seats, an arc-shaped movable groove is opened on the inner wall of the arc-shaped movable frame, and a sliding column is slidably connected to the inner wall of the arc-shaped movable groove.

[0023] Furthermore, a connecting rope is fixedly connected to the inner wall of the sliding column, and both ends of the connecting rope are arranged along the inner wall of the arc-shaped movable groove. Both ends of the connecting rope penetrate two supporting seats and are fixedly connected to two rotating drums.

[0024] Furthermore, the flip connection assembly located outside the sliding column also includes an adjustment groove provided on the outer wall of the telescopic cylinder, and the inner wall of the adjustment groove is slidably connected to the outer wall of the sliding column.

[0025] By adopting the above scheme, through the arc-shaped flip assembly, when it is necessary to perform a front-end impact resistance test on the frame, a connecting block is extended from the telescopic cylinder in the horizontal direction of the connecting groove to be connected to the rotating block, and an adjustment groove is opened on the outer wall of the telescopic cylinder in the horizontal direction, and the range of adapting to the size of the frame can be expanded by sliding the adjustment groove and the sliding column. Then, the rope winding rod away from the head tube of the frame is rotated to make the connecting rope wound on the corresponding rotating drum, thereby pulling the sliding column to slide in the arc-shaped moving groove, so that the head tube of the frame is lifted, and the hydraulic device is operated to impact the front end of the frame, so as to achieve the effect of testing the impact resistance of the front end.

[0026] Beneficial effects of the present invention:

[0027] By arranging the head pipe clamping assembly to be connected with the two flip connection assemblies respectively, when it is necessary to perform horizontal fatigue resistance, seat load, two-side load and impact resistance tests on the frame, a connecting block is extended from the telescopic cylinder in the vertical direction of the connecting groove to be connected with the rotating block, and the locking column is moved in the locking groove to limit and fix it; when it is necessary to perform a front-end impact resistance test on the frame, a connecting block is extended from the telescopic cylinder in the horizontal direction of the connecting groove to be connected with the rotating block, so that the frame can be connected with devices with different functions, and the frame can be tested at different angles and postures, so as to improve the accuracy and reliability of the test results.

[0028] By selecting two replaceable pipe plugs that fit the inner wall of the frame head tube, respectively threading them into the two clamping movable seats, and then sliding the two clamping movable seats on the limiting round rod, the two replaceable pipe plugs are respectively inserted into the two ends of the frame head tube, and then tightening the locking bolts to connect the frame head tube and the limiting round rod as a whole, and then rotating the rotating block at the bottom of the limiting round rod to adjust the orientation of the connecting groove so that the connecting groove is aligned with the flip connecting components in the vertical direction and the horizontal direction, the frames of different sizes can be quickly clamped, so as to improve the test flexibility, efficiency, and the accuracy and consistency of the results.

[0029] By running the output cylinder, the output end of the output cylinder pushes and pulls the stretching base to slide on the sliding rod and apply force, so as to achieve the effect of testing the horizontal fatigue resistance. The position of the hydraulic device on the support frame can be adjusted and run. The seat is pressed and impacted by the lower pressure block through the multi-section telescopic rod, so as to achieve the effect of testing the load-bearing capacity and impact resistance of each position of the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the supporting flipping mechanism of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the head pipe clamping assembly of the present invention;

[0033] Figure 4 It is a schematic cross-sectional view of the exploded structure of the head pipe clamping assembly of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the flip connection assembly of the present invention;

[0035] Figure 6 It is a cross-sectional schematic diagram of the explosion structure of the horizontal stretching assembly of the present invention;

[0036] Figure 7 It is a schematic diagram of the exploded structure of the rear fork clamping assembly of the present invention;

[0037] Figure 8 It is a structural schematic diagram of the mobile pressing component of the present invention;

[0038] Fig. 9 It is a schematic diagram of the flipping state of the electric bicycle frame of the present invention;

[0039] Fig.10 It is a structural schematic diagram of the arc-shaped flip assembly of the present invention;

[0040] Fig.11 It is a cross-sectional schematic diagram of the explosion structure of the arc-shaped flip assembly of the present invention;

[0041] Fig.12 It is a schematic diagram of the deformation state of the lower pressing block of the present invention bypassing the arc-shaped flip assembly;

[0042] Fig.13 This is a schematic diagram of the electric bicycle frame of the present invention in a lifted state.

[0043] In the figure:

[0044] 1. Equipment base; 2. Support frame; 3. Mobile pressing assembly; 31. Hydraulic device; 32. Multi-section telescopic rod; 33. Pressing block; 4. Arc-shaped flip assembly; 41. Support seat; 42. Rotating drum; 43. Rope winding rod; 44. Arc-shaped movable frame; 45. Arc-shaped movable groove; 46. Sliding column; 47. Connecting rope; 48. Adjusting groove; 5. Support flip mechanism; 51. Head pipe clamping assembly; 511. Limiting round rod; 512. Clamping movable seat; 513. Replaceable pipe plug; 514. Locking bolt; 515. Rotating block; 516, connecting groove; 52, flip connecting assembly; 521, connecting block; 522, telescopic cylinder; 523, locking column; 524, locking groove; 525, slide groove; 53, horizontal stretching assembly; 531, stretching base; 532, output cylinder; 533, sliding rod; 534, flip handwheel; 535, slider; 536, flip thread; 54, rear fork clamping assembly; 541, clamping seat; 542, flip column; 543, rotating column; 544, bolt clamping rod; 6, control host. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0046] Example 1, reference Figure 1 - Fig. 9 , which is the first embodiment of the present invention, provides an electric bicycle frame load-bearing capacity testing device for testing the load-bearing capacity of an electric bicycle frame, comprising a device base 1, a support frame 2 arranged above the device base 1, an arc-shaped flip assembly 4 and a support flip mechanism 5, a mobile pressing assembly 3 sliding on the top of the support frame 2, and a control host 6 arranged on one side of the device base 1, the support flip mechanism 5 comprises a head tube clamping assembly 51 and a rear fork clamping assembly 54 respectively connected to the head and tail of the electric bicycle frame, and a flip connecting assembly 52 connected to the head tube clamping assembly 51.

[0047] Reference Figure 5 - Figure 6 The flip connection assembly 52 includes a connection block 521 that is clamped inside the head pipe clamp assembly 51. The outer wall of the connection block 521 is slidably connected with a telescopic cylinder 522. The outer wall of the telescopic cylinder 522 is provided with a clamping groove 524. The inner wall of the connection block 521 is movably connected with a clamping column 523. The clamping column 523 is clamped with the clamping groove 524. The position of the clamping column 523 in the clamping groove 524 can adjust the extension length of the connection block 521.

[0048] Specifically, the head tube clamping assembly 51 and the rear fork clamping assembly 54 can clamp the head tube and the rear fork of the frame, so that the entire frame is fixed. The head tube clamping assembly 51 can be connected to two flip connection assemblies 52 at different positions. The two flip connection assemblies 52 are composed of a connecting block 521 and a telescopic cylinder 522, wherein the connecting block 521 is used to connect with the head tube clamping assembly 51, and the telescopic cylinder 522 is used to connect with devices with different functions. A plurality of bayonet holes are provided in the bayonet groove 524, and the bayonet column 523 can be inserted into any bayonet hole to achieve the effect of limiting and fixing the connecting block 521.

[0049] The head tube clamping assembly 51 is connected to the two flip connection assemblies 52 respectively. When the frame needs to be subjected to horizontal fatigue resistance, seat load, two-side load and impact resistance tests, a connection block 521 is extended from the telescopic cylinder 522 in the vertical direction of the head tube clamping assembly 51 to be connected to the rotating block 515, and the locking column 523 is moved in the locking groove 524 to limit and fix it; when the frame needs to be subjected to a front-end impact resistance test, a connection block 521 is extended from the telescopic cylinder 522 in the horizontal direction of the head tube clamping assembly 51 to be connected to the rotating block 515, so that the frame can be connected to devices with different functions, and the frame can be tested at different angles and postures, so as to improve the accuracy and reliability of the test results.

[0050] Reference Figure 4 - Figure 5 The head tube clamping assembly 51 includes a replaceable tube plug 513 that fits inside the head tube of the electric bicycle frame. The outer wall of the replaceable tube plug 513 is threadedly connected with a clamping movable seat 512. The inner wall of the clamping movable seat 512 is slidably connected with two limiting round rods 511. The inner wall of the clamping movable seat 512 is rotatably connected with a locking bolt 514. The clamping movable seat 512 is locked to the outer wall of the limiting round rod 511 through the locking bolt 514. A rotating block 515 is rotatably connected between the two limiting round rods 511. A plurality of connecting grooves 516 are opened inside the rotating block 515. The inner wall of the connecting groove 516 is clamped with the outer wall of the connecting block 521.

[0051] Specifically, the entire head pipe clamping assembly 51 can be moved arbitrarily, and the replaceable pipe plug 513 can also be replaced arbitrarily. The entire head pipe clamping assembly 51 is fixed to the frame to change the center of gravity of the frame, and then the orientation of the rotating block 515 is adjusted to ensure that the connecting groove 516 in the rotating block 515 is always in the vertical and horizontal directions.

[0052] By selecting two replaceable pipe plugs 513 that fit the inner wall of the frame head tube, respectively screwing them into the two clamping movable seats 512, and then sliding the two clamping movable seats 512 on the limiting round rod 511, the two replaceable pipe plugs 513 are respectively inserted into the two ends of the frame head tube, and then tightening the locking bolts 514 to connect the frame head tube and the limiting round rod 511 as a whole, and then rotating the rotating block 515 at the bottom of the limiting round rod 511 to adjust the orientation of the connecting groove 516 so that the connecting groove 516 is aligned with the flip connecting assembly 52 in the vertical direction and the horizontal direction, frames of different sizes can be quickly clamped, thereby achieving the effect of improving test flexibility, efficiency, and accuracy and consistency of results.

[0053] Reference Figure 7 The rear fork clamping assembly 54 includes two bolt clamping rods 544 hinged to the outer wall of the rear fork of the electric bicycle frame, a rotating column 543 is fixedly connected between the two bolt clamping rods 544, the outer wall of the rotating column 543 is rotatably connected to a flip column 542, the outer wall of the flip column 542 is rotatably connected to a clamping seat 541, and the bottom of the clamping seat 541 is fixedly connected to the top of the equipment base 1.

[0054] Specifically, the bolt clamping rod 544 is composed of two bolts and a threaded rod. When clamping, first remove one bolt, put the rear fork of the frame on the threaded rod, and then install the removed bolt. Tighten the two bolts in opposite directions to clamp, and the rotating column 543 and the flip column 542 can be rotated arbitrarily.

[0055] By respectively clamping the two rear forks at the rear of the frame between the two bolt clamping rods 544 and tightening the bolts, the two rear forks at the rear of the frame are connected to the rotating column 543 as a whole, and can be flipped through the flip column 542 and the clamping seat 541 with the rotating column 543 as the axis.

[0056] Reference Figure 5 - Figure 6 The supporting flipping mechanism 5 also includes a horizontal stretching component 53 arranged on the top of the equipment base 1, and the horizontal stretching component 53 includes an output cylinder 532 fixedly connected to the top of the equipment base 1, and the output end of the output cylinder 532 is fixedly connected to the stretching base 531, and the bottom of the stretching base 531 is slidably connected to multiple sliding rods 533, and the multiple sliding rods 533 are all fixedly connected to the inner wall of the equipment base 1. The flip connection component 52 located above the stretching base 531 also includes a slide groove 525 opened on the inner wall of the telescopic cylinder 522, and the inner wall of the slide groove 525 is slidably connected to a slider 535, and the bottom of the slider 535 is fixedly connected to a flip handwheel 534, and the outer wall of the flip handwheel 534 is rotatably connected to the inner wall of the telescopic cylinder 522, and the outer wall of the flip handwheel 534 is provided with a flip thread 536, and the outer wall of the flip thread 536 is threadedly connected to the inner wall of the stretching base 531.

[0057] Specifically, the output cylinder 532 can push and pull the equipment base 1 on the sliding rod 533 to provide power for the horizontal fatigue resistance test and adjust the position of the vertical flip connection assembly 52. ​​The flip handwheel 534 is flipped and adjusted in the position of the equipment base 1 through the flip thread 536, and the vertical flip connection assembly 52 is driven to flip through the slider 535, and the slider 535 can slide in the slide groove 525 to limit the flip angle.

[0058] By operating the output cylinder 532, the output end of the output cylinder 532 pushes and pulls the stretching base 531 to slide and apply force on the sliding rod 533, thereby achieving the effect of testing the horizontal fatigue resistance, and the position of the mobile pressing component 3 on the support frame 2 can be adjusted and operated to achieve the effect of testing the bearing capacity of the seat, and the flip hand wheel 534 can be rotated to make the flip thread 536 on the flip hand wheel 534 rotate in the thread in the stretching base 531, thereby driving the slider 535 on the flip hand wheel 534 to slide inside the telescopic cylinder 522 and turn synchronously, so that the frame is flipped, and the mobile pressing component 3 is operated to apply pressure and impact on the side of the frame, thereby achieving the effect of testing the bearing capacity and impact resistance of both sides.

[0059] Reference Figure 8 The movable pressing assembly 3 includes a hydraulic device 31 slidably connected to the top of the support frame 2, and two multi-section telescopic rods 32 are fixedly connected to the bottom of the hydraulic device 31. A pressing block 33 is arranged at the bottom of the two multi-section telescopic rods 32, one of the multi-section telescopic rods 32 is rotatably connected to the pressing block 33, and the other multi-section telescopic rod 32 is clamped with the pressing block 33.

[0060] Specifically, the hydraulic device 31 provides power for pressing and impacting, the multi-section telescopic rod 32 can adjust the position of the pressing block 33, and one of the multi-section telescopic rods 32 can be separated from the pressing block 33, providing conditions for the movement of the arc-shaped flip assembly 4.

[0061] By adjusting the position of the hydraulic device 31 on the support frame 2 and operating it, the lower pressing block 33 applies pressure and impacts the vehicle seat through the multi-section telescopic rod 32, thereby achieving the effect of testing the load-bearing capacity and impact resistance of each position of the frame.

[0062] During use, the electric bicycle frame is moved to the top of the equipment base 1, and the head tube clamping assembly 51 and the rear fork clamping assembly 54 are used to clamp the electric bicycle frame; the two rear forks at the rear of the frame are respectively inserted between the two bolt clamping rods 544, and the bolts are tightened to connect the two rear forks at the rear of the frame with the rotating column 543 as a whole, and the rotating column 543 can be used as the axis to flip through the flip column 542 and the clamping seat 541, and two replaceable pipe plugs 513 that fit the inner wall of the head tube of the frame are selected, and the two rear forks are respectively threaded. The two clamping movable seats 512 are twisted into the two clamping movable seats 512, and then the two clamping movable seats 512 are slid on the limiting rod 511, so that the two replaceable pipe plugs 513 are respectively inserted into the two ends of the frame head pipe, and then the locking bolts 514 are tightened to connect the frame head pipe and the limiting rod 511 as a whole, and then the rotating block 515 is rotated at the bottom of the limiting rod 511 to adjust the orientation of the connecting groove 516 so that the connecting groove 516 is aligned with the flip connection assembly 52 in the vertical direction and the horizontal direction. Then, the rotating block 515 is respectively connected to the two flip connection assemblies according to the needs. When the frame needs to be tested for horizontal fatigue resistance, seat load, both side load and impact resistance, the connecting block 521 is extended from the telescopic cylinder 522 in the vertical direction of the connecting groove 516 to connect with the rotating block 515, and the positioning column 523 is moved in the positioning groove 524 to limit and fix it; then the output cylinder 532 is operated, and the output end of the output cylinder 532 pushes and pulls the stretching base 531 to slide on the sliding rod 533 and apply force, so as to achieve the effect of testing the horizontal fatigue resistance, and the hydraulic device 31 can be adjusted to the support frame 2 and operate, the lower pressing block 33 applies pressure to the vehicle seat through the multi-section telescopic rod 32, so as to achieve the effect of testing the bearing capacity of the vehicle seat, and the flip hand wheel 534 can be rotated to make the flip thread 536 on the flip hand wheel 534 rotate in the thread in the stretching base 531, thereby driving the slider 535 on the flip hand wheel 534 to slide inside the telescopic cylinder 522 and turn synchronously, so that the frame is flipped, and the hydraulic device 31 is operated to apply pressure and impact on the side of the frame, so as to achieve the effect of testing the bearing capacity and impact resistance of both sides.

[0063] Example 2, reference Fig.10 - Fig.13 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: Figure 5 The arc-shaped flip assembly 4 includes two support seats 41 fixedly connected to the top of the equipment base 1, and the interiors of the two support seats 41 are fixedly connected to a rotating drum 42, and the interior of the rotating drum 42 is rotatably connected to a rope winding rod 43.

[0064] Reference Fig.11An arc-shaped movable frame 44 is fixedly connected between the tops of the two support seats 41, an arc-shaped movable groove 45 is opened on the inner wall of the arc-shaped movable frame 44, a sliding column 46 is slidably connected to the inner wall of the arc-shaped movable groove 45, and a connecting rope 47 is fixedly connected to the inner wall of the sliding column 46, and both ends of the connecting rope 47 are arranged along the inner wall of the arc-shaped movable groove 45, and both ends of the connecting rope 47 respectively penetrate the two support seats 41 and are fixedly connected to the two rotating drums 42.

[0065] Reference Fig.11 The flip connection assembly 52 located outside the sliding column 46 also includes an adjustment groove 48 provided on the outer wall of the telescopic cylinder 522, and the inner wall of the adjustment groove 48 is slidably connected to the outer wall of the sliding column 46.

[0066] Specifically, two rotating drums 42 are respectively installed on the two support seats 41, and a connecting rope 47 is connected between the two rotating drums 42. The middle section of the connecting rope 47 is connected to the sliding column 46, and the connecting rope 47 is arranged in the arc-shaped movable groove 45. The sliding column 46 slides in the arc-shaped movable groove 45, and the sliding column 46 and the horizontal flip connection component 52 can be adjusted to a certain distance through the adjustment groove 48.

[0067] During use, when the front-end impact resistance test of the frame is required, a connection block 521 is extended from the telescopic cylinder 522 in the horizontal direction of the connection slot 516 to connect with the rotating block 515, and an adjustment slot 48 is provided on the outer wall of the telescopic cylinder 522 in the horizontal direction, and the range of the frame size can be expanded by sliding the adjustment slot 48 and the sliding column 46, and then the rope winding rod 43 away from the frame head tube is rotated to make the connecting rope 47 wind around the corresponding rotating cylinder 42, thereby pulling the sliding column 46 to slide in the arc-shaped moving slot 45, so that the frame head tube is lifted, and the hydraulic device 31 is operated to impact the front end of the frame, so as to achieve the effect of testing the front-end impact resistance. The rest of the structure is the same as that of the first embodiment.

[0068] Working principle of the present invention:

[0069] During operation, the electric bicycle frame is moved to the top of the equipment base 1, and the electric bicycle frame is clamped using the head tube clamping assembly 51 and the rear fork clamping assembly 54; the two rear forks at the rear of the frame are respectively inserted between the two bolt clamping rods 544, and the bolts are tightened to connect the two rear forks at the rear of the frame to the rotating column 543 as a whole, and the frame can be flipped through the flip column 542 and the clamping seat 541 with the rotating column 543 as the axis.

[0070] Two replaceable pipe plugs 513 that fit the inner wall of the frame head tube are selected and screwed into the two clamping movable seats 512 respectively. Then, the two clamping movable seats 512 are slid on the limiting round rod 511 so that the two replaceable pipe plugs 513 are respectively inserted into the two ends of the frame head tube. Then, the locking bolts 514 are tightened to connect the frame head tube and the limiting round rod 511 as a whole. Then, the rotating block 515 is rotated at the bottom of the limiting round rod 511 to adjust the orientation of the connecting groove 516 so that the connecting groove 516 is aligned with the flip connecting assembly 52 in the vertical direction and the horizontal direction.

[0071] Then, the rotating block 515 is connected to the two flip connection components 52 respectively according to the needs; when the frame needs to be tested for horizontal fatigue resistance, seat load, two-side load and impact resistance, the connecting block 521 is extended from the telescopic cylinder 522 in the vertical direction of the connecting groove 516 to connect with the rotating block 515, and the locking column 523 is moved in the locking groove 524 to limit and fix it; then the output cylinder 532 is operated, and the output end of the output cylinder 532 pushes and pulls the stretching base 531 to slide on the sliding rod 533 and apply force, so as to achieve the effect of testing the horizontal fatigue resistance, and the position of the hydraulic device 31 on the support frame 2 can be adjusted and operated, and the seat is pressed by the lower pressing block 33 through the multi-section telescopic rod 32, so as to achieve the effect of testing the bearing capacity of the seat.

[0072] The flip hand wheel 534 can also be rotated to make the flip thread 536 on the flip hand wheel 534 rotate in the stretching base 531, thereby driving the slider 535 on the flip hand wheel 534 to slide inside the telescopic cylinder 522 and turn synchronously, so that the frame is flipped, and the hydraulic device 31 is operated to apply pressure and impact on the side of the frame, so as to achieve the effect of testing the load-bearing capacity and impact resistance of both sides.

[0073] When it is necessary to perform a front-end impact resistance test on the frame, a connecting block 521 is extended from the telescopic cylinder 522 in the horizontal direction of the connecting groove 516 to be connected to the rotating block 515, and an adjusting groove 48 is provided on the outer wall of the telescopic cylinder 522 in the horizontal direction. The range of adapting to the size of the frame can be expanded by sliding the adjusting groove 48 and the sliding column 46. Then, the rope winding rod 43 away from the frame head tube is rotated to make the connecting rope 47 wind around the corresponding rotating cylinder 42, thereby pulling the sliding column 46 to slide in the arc-shaped moving groove 45, so that the frame head tube is lifted, and the hydraulic device 31 is operated to impact the front end of the frame, so as to achieve the effect of testing the front-end impact resistance.

[0074] It should be noted that the above 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 with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An electric bicycle frame load-bearing capacity testing device, used for testing the load-bearing capacity of an electric bicycle frame, comprising a device base (1), a support frame (2) arranged above the device base (1), an arc-shaped flip assembly (4) and a support flip mechanism (5), a moving downward pressing assembly (3) sliding on the top of the support frame (2), and a control host (6) arranged on one side of the device base (1), characterized in that: The supporting flip mechanism (5) comprises a head tube clamping assembly (51) and a rear fork clamping assembly (54) respectively connected to the electric bicycle frame at the head and tail ends, and a flip connection assembly (52) connected to the head tube clamping assembly (51); The flip connection assembly (52) comprises a connection block (521) clamped inside the head pipe clamping assembly (51); the outer wall of the connection block (521) is slidably connected to a telescopic cylinder (522); the outer wall of the telescopic cylinder (522) is provided with a clamping groove (524); the inner wall of the connection block (521) is movably connected to a clamping column (523); the clamping column (523) is clamped to the clamping groove (524); the position of the clamping column (523) in the clamping groove (524) can adjust the extension length of the connection block (521); The arc-shaped flip assembly (4) comprises two support seats (41) fixedly connected to the top of the equipment base (1); an arc-shaped movable frame (44) is fixedly connected between the tops of the two support seats (41); an inner wall of the arc-shaped movable frame (44) is provided with an arc-shaped movable groove (45); the inner wall of the arc-shaped movable groove (45) is slidably connected to a sliding column (46); the flip connection assembly (52) located outside the sliding column (46) further comprises an adjustment groove (48) provided on the outer wall of the telescopic cylinder (522); the inner wall of the adjustment groove (48) is slidably connected to the outer wall of the sliding column (46).

2. The electric bicycle frame load-bearing capacity testing device according to claim 1, characterized in that: The head pipe clamping assembly (51) comprises a replaceable pipe plug (513) which fits inside the head pipe of the electric bicycle frame; the outer wall of the replaceable pipe plug (513) is threadedly connected to a clamping movable seat (512); the inner wall of the clamping movable seat (512) is slidably connected to two limiting round rods (511); the inner wall of the clamping movable seat (512) is rotatably connected to a locking bolt (514); the clamping movable seat (512) is locked to the outer wall of the limiting round rod (511) by the locking bolt (514); a rotating block (515) is rotatably connected between the two limiting round rods (511); a plurality of connecting grooves (516) are provided inside the rotating block (515); the inner wall of the connecting groove (516) is clamped to the outer wall of the connecting block (521).

3. The electric bicycle frame load-bearing capacity testing device according to claim 2, characterized in that: The rear fork clamping assembly (54) comprises two bolt clamping rods (544) hinged to the outer wall of the rear fork of the electric bicycle frame, a rotating column (543) is fixedly connected between the two bolt clamping rods (544), the outer wall of the rotating column (543) is rotatably connected to a flip column (542), the outer wall of the flip column (542) is rotatably connected to a clamping seat (541), and the bottom of the clamping seat (541) is fixedly connected to the top of the device base (1).

4. The electric bicycle frame load-bearing capacity testing device according to claim 3, characterized in that: The supporting flip mechanism (5) further comprises a horizontal stretching assembly (53) arranged on the top of the device base (1), the horizontal stretching assembly (53) comprising an output cylinder (532) fixedly connected to the top of the device base (1), the output end of the output cylinder (532) being fixedly connected to a stretching base (531), the bottom of the stretching base (531) being slidably connected to a plurality of sliding rods (533), the plurality of sliding rods (533) being fixedly connected to the inner wall of the device base (1).

5. The electric bicycle frame load-bearing capacity testing device according to claim 4, characterized in that: The flip connection assembly (52) located above the stretching base (531) further comprises a slide groove (525) provided on the inner wall of the telescopic cylinder (522); the inner wall of the slide groove (525) is slidably connected to a slider (535); the bottom of the slider (535) is fixedly connected to a flip hand wheel (534); the outer wall of the flip hand wheel (534) is rotatably connected to the inner wall of the telescopic cylinder (522); the outer wall of the flip hand wheel (534) is provided with a flip thread (536); the outer wall of the flip thread (536) is threadedly connected to the inner wall of the stretching base (531).

6. The electric bicycle frame load-bearing capacity testing device according to claim 1, characterized in that: The movable pressing assembly (3) comprises a hydraulic device (31) slidably connected to the top of the support frame (2); two multi-section telescopic rods (32) are fixedly connected to the bottom of the hydraulic device (31); a pressing block (33) is arranged at the bottom of the two multi-section telescopic rods (32); one of the multi-section telescopic rods (32) is rotatably connected to the pressing block (33), and the other multi-section telescopic rod (32) is clamped to the pressing block (33).

7. The electric bicycle frame load-bearing capacity testing device according to claim 1, characterized in that: The insides of the two support seats (41) are both fixedly connected with a rotating drum (42), and the inside of the rotating drum (42) is rotatably connected with a rope winding rod (43).

8. The electric bicycle frame load-bearing capacity testing device according to claim 7, characterized in that: A connecting rope (47) is fixedly connected to the inner wall of the sliding column (46), and both ends of the connecting rope (47) are arranged along the inner wall of the arc-shaped moving groove (45). Both ends of the connecting rope (47) penetrate the two supporting seats (41) and are fixedly connected to the two rotating drums (42).

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