A scooter strength testing device and method

Abstract

The present invention provides a scooter strength testing device, including a base and a support frame, a crossbeam is provided at the upper end of the support frame, a first deck fastening assembly and a second deck fastening assembly are provided on the crossbeam and the base respectively, a second cylinder is also rotatably connected to the upper end of the support frame, a first cylinder is rotatably connected to the base, a pressure sensor is connected to the piston rod of the first cylinder and the second cylinder, each of the pressure sensors is connected to a connecting rod, and each connecting rod is connected to a clamp. The present invention can realize the rapid fastening of the scooter, and by providing the cylinder and the clamp, it can replace the manual placement of heavy objects to load the scooter with a test force, and the operation is relatively simple; at the same time, because the two sets of deck fastening assemblies are respectively provided at the upper ends of the base and the support frame, the scooter can be tested for strength in both positive and reverse states, and the measurement accuracy is relatively high. The present invention also provides a scooter strength testing method.

Description

Technical Field

[0001] The invention relates to a testing device and method, in particular to a scooter strength testing device and method. Background Art

[0002] As a new means of transportation, scooters are deeply loved by people. Due to structural limitations, the strength of scooters directly affects their safety performance. For example, the handlebar of a scooter not only needs to withstand various forces when the user controls the scooter, but also needs to withstand the pressure of the user's upper body. If the handlebar is not strong enough, the connection strength between the handlebar and the handle support rod is not strong enough, or the connection strength between the handle support rod and the deck is not strong enough, the scooter may lose control. In addition, the deck of the scooter directly bears the weight of the user's body, so its strength is equally important.

[0003] At present, the handle strength of the scooter and the connection strength of the handle support rod are usually tested by hanging heavy objects, and the deck strength of the scooter is usually tested by placing heavy objects on the deck. The operation is relatively complicated, the force direction is single, and the measurement accuracy is relatively low.

[0004] In view of this, the applicant conducted in-depth research on the scooter strength testing device and method, which led to the present case. Summary of the invention

[0005] The object of the present invention is to provide a scooter strength testing device and method which are simple to operate and have relatively high measurement accuracy.

[0006] In order to achieve the above purpose, the testing device of the present invention adopts the following technical solutions:

[0007] A scooter strength testing device comprises a base and a supporting frame fixedly connected to the base, a horizontally arranged crossbeam is arranged on the upper end of the supporting frame, a first deck fastening assembly and a second deck fastening assembly arranged opposite to each other are respectively arranged on the crossbeam and the base, and the second deck fastening assembly is located at a position corresponding to the supporting frame, a second cylinder which cooperates with the second deck fastening assembly is rotatably connected to the upper end of the supporting frame, a first cylinder which cooperates with the first deck fastening assembly is rotatably connected to the base, and the first cylinder is staggered with the supporting frame, pressure sensors are connected to the piston rods of the first cylinder and the second cylinder, each of the pressure sensors is connected to a connecting rod, and each connecting rod is connected to a clamp which cooperates with the handlebar of the scooter.

[0008] As an improvement of the present invention, both the first cylinder and the second cylinder are connected to pressure regulating valves.

[0009] As an improvement of the present invention, the first deck fastening assembly includes a first pressure plate located above the beam and first screw rods respectively inserted at both ends of the first pressure plate, each of the first screw rods is simultaneously inserted in the beam, and each of the first screw rods is spirally connected with a first nut and a first hand wheel, the first nut abuts against the upper surface of the first pressure plate, and the first hand wheel abuts against the lower surface of the beam; the second deck fastening assembly includes a second pressure plate located above the base and second screw rods respectively inserted at both ends of the second pressure plate, each of the second screw rods is simultaneously inserted in the base, and each of the second screw rods is spirally connected with a second nut and a second hand wheel, the second nut abuts against the lower surface of the base, and the second hand wheel abuts against the upper surface of the second pressure plate.

[0010] As an improvement of the present invention, the clamp includes a connecting block fixedly connected to the connecting rod, a torsion bar fixedly connected to the connecting block, a U-shaped frame slidably connected to the torsion bar, and a pin inserted into the U-shaped frame. There are two U-shaped frames, which are respectively located on both sides of the connecting block, and the pin is located near the U-shaped mouth of the U-shaped frame.

[0011] As an improvement of the present invention, a connecting seat is rotatably connected to the cylinder body of the first cylinder, and a waist-shaped hole is provided on the connecting seat. A screw is inserted into the waist-shaped hole. A plurality of threaded holes arranged in a straight line are also provided on the base. The screw is spirally connected in one of the threaded holes, and the arrangement direction of each threaded hole and the length direction of the waist-shaped hole are perpendicular to the length direction of the beam.

[0012] After adopting the above technical solution, the testing device of the present invention has the following beneficial effects:

[0013] By setting up the deck fastening assembly, the scooter can be quickly fastened. By setting up the cylinder and the clamp, the scooter can be loaded with test force instead of manually placing heavy objects, and the operation is relatively simple. At the same time, since the two sets of deck fastening assemblies are respectively arranged at the upper end of the base and the support frame, the scooter can be tested for strength in both upright and inverted states, which is closer to the use of the scooter under extreme conditions, and the measurement accuracy is relatively high.

[0014] In order to achieve the above object, the testing method of the present invention adopts the following technical scheme:

[0015] A scooter strength testing method, the following steps are performed in sequence:

[0016] S1, fixing the deck of the scooter and making the handlebar of the scooter be located at the upper end of the scooter, adjusting the handlebar support rod of the scooter to a non-maximum length, then applying an upward pulling force to one or both ends of the handlebar and maintaining it for a predetermined time, and observing whether the length of the handlebar support rod is extended;

[0017] S2, adjusting the length of the handle support rod to the maximum length, then applying an upward pulling force to one or both ends of the handle rod and maintaining it for a predetermined time, and observing whether the connection positions of the two ends of the handle support rod are firm;

[0018] S3, inverting the scooter so that the handlebar is located at the lower end of the scooter, then fixing the rear end of the deck, and arranging a support member on the lower side of the deck, while adjusting the handlebar support rod of the scooter to a non-maximum length, and then applying a downward pulling force to one or both ends of the handlebar and maintaining it for a predetermined time, and observing whether the length of the handlebar support rod is elongated;

[0019] S4. Adjust the length of the handle support rod to the maximum length, then apply a downward pulling force to one or both ends of the handle rod and maintain it for a predetermined time, and observe whether the connection positions at both ends of the handle support rod are firm and whether the deck is broken.

[0020] As an improvement of the present invention, after step S1 and / or step S2 are completed, an upward pulling force is intermittently applied to one or both ends of the handlebar, and after step S3 and / or step S4 are completed, a downward pulling force is intermittently applied to one or both ends of the handlebar.

[0021] As an improvement of the present invention, the pulling force applied to the handle rod is provided by a cylinder, a pressure regulating valve is connected to the inlet pipe of the cylinder, and a pressure sensor is connected to the piston rod of the cylinder. When performing step S1, step S2, step S3 or step S4, the air pressure of the cylinder is controlled by the pressure regulating valve so that the pressure sensor is stabilized at a predetermined value, and the opening value of the pressure regulating valve at this time is recorded; after completing step S1, step S2, step S3 or step S4, the pressure regulating valve alternates between closing and opening to the opening value.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects:

[0023] 1. By testing the strength of the scooter in both upright and inverted states, it is closer to the use of the scooter in extreme conditions, and the measurement accuracy is relatively high; at the same time, because in the inverted state, by setting supports on the lower side of the deck, the strength of the deck can be tested at the same time, which is more convenient to operate.

[0024] 2. By recording the opening value of the pressure regulating valve, it is convenient for the cylinder to quickly reach the predetermined pressure and maintain stability, which helps to improve the accuracy of the test structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the scooter strength testing device of the present invention in use;

[0026] Figure 2 It is a structural schematic diagram of the scooter strength testing device of the present invention in another use state.

[0027] Some parts are omitted in each figure, and the corresponding markings in the figure are as follows:

[0028] 10-base; 11-first cylinder;

[0029] 12-connecting seat; 13-threaded hole;

[0030] 20-support frame; 21-column;

[0031] 22-top rod; 23-crossbeam;

[0032] 24-second cylinder; 30-first deck fastening assembly;

[0033] 31-first pressing plate; 32-first screw;

[0034] 33-first nut; 34-first hand wheel;

[0035] 40-second deck fastening assembly; 41-second pressure plate;

[0036] 42-second screw; 43-second hand wheel;

[0037] 50-pressure sensor; 60-connecting rod;

[0038] 70-clamp; 71-connecting block;

[0039] 72-torsion bar; 73-U-shaped frame;

[0040] 74-Latch. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0042] like Figure 1-Figure 2As shown, this embodiment provides a scooter strength testing device, including a base 10 and a support frame 20 fixedly connected to the base 10, wherein the upper surface of the base 10 has a horizontally arranged working surface, and the support frame 20 includes four vertically arranged columns 21 whose lower ends are respectively fixedly connected to the base 10, and a top rod 22 whose two ends are respectively fixedly connected between two adjacent columns 21, and each top rod 22 together forms a quadrilateral structure. In addition, a horizontally arranged crossbeam 23 is provided at the upper end of the support frame 20, and specifically, the two ends of the crossbeam 23 are respectively fixedly connected to two mutually parallel top rods 22.

[0043] The cross beam 23 and the base 10 are respectively provided with a first deck fastening assembly 30 and a second deck fastening assembly 40 which are arranged opposite to each other, and the second deck fastening assembly 40 is located at a position corresponding to the supporting frame 20, that is, the projection of the supporting frame 20 on the working surface of the base 10 coincides with the second deck fastening assembly 40. The first deck fastening assembly 30 includes a first pressing plate 31 located above the beam 23 and first screws 32 vertically inserted at both ends of the first pressing plate 31, that is, there are more than two first screws 32, each of which is inserted on the beam 23 at the same time, and each of the first screws 32 is spirally connected with a first nut 33 and a first hand wheel 34, wherein the first nut 33 abuts against the upper surface of the first pressing plate 31, and the first hand wheel 34 abuts against the lower surface of the beam 23; the second deck fastening assembly 40 includes a second pressing plate 41 located above the base 10 and second screws 42 vertically inserted at both ends of the second pressing plate 41, that is, there are also more than two second screws 42, each of which is inserted on the base 10 at the same time, and each of the second screws 42 is spirally connected with a second nut (not shown in the figure) and a second hand wheel 43, wherein the second nut abuts against the lower surface of the base 10, and the second hand wheel 43 abuts against the upper surface of the second pressing plate 41. In this way, the deck of the scooter can be inserted between the first pressing plate 31 and the crossbeam 23 or between the second pressing plate 41 and the base 10, and then the corresponding hand wheel is rotated to fasten the deck of the scooter.

[0044] The upper end of the support frame 20 is also rotatably connected to a second cylinder 24 that cooperates with the second deck fastening assembly 40, and the base 10 is rotatably connected to a first cylinder 11 that cooperates with the first deck fastening assembly 30, and the first cylinder 11 and the support frame 20 are arranged in a staggered manner, that is, the projection of the support frame 20 on the working surface of the base 10 does not overlap with the first cylinder 11. Preferably, a connecting seat 12 is rotatably connected to the cylinder body of the first cylinder 11, and a waist-shaped hole is provided on the connecting seat, and a screw (not shown in the figure) is inserted through the waist-shaped hole. At the same time, a plurality of threaded holes 13 arranged in a straight line are also provided on the base 10, and the screw is spirally connected in one of the threaded holes 13, and the arrangement direction of each threaded hole 13 and the length direction of the waist-shaped hole are arranged perpendicular to the length direction of the crossbeam 23. It should be noted that when there are more than two waist-shaped holes, the number of bolts needs to be the same as the number of waist-shaped holes, and each bolt cooperates with a group of threaded holes 13 arranged in a straight line, and each group of threaded holes 13 includes a plurality of threaded holes 13 arranged in a straight line.

[0045] The piston rods of the first cylinder 11 and the second cylinder 24 are connected to pressure sensors 50, each pressure sensor 50 is connected to a connecting rod 60, each connecting rod 60 is connected to a clamp 70 that matches the handlebar of the scooter, that is, the piston rods of the cylinders, the pressure sensors 50, the connecting rods 60 and the clamps 70 are connected in sequence. In addition, the first cylinder 11 and the second cylinder 24 are connected to pressure regulating valves (not shown in the figure).

[0046] The clamp 70 can be a conventional clamp, such as a spring clamp, etc. Preferably, in the present embodiment, the two clamps 70 have the same structure. Taking one of the clamps 70 as an example, the clamp 70 includes a connecting block 71 fixedly connected to the corresponding connecting rod 60, a torsion bar 72 fixedly connected to the connecting block 71, a U-shaped frame 73 slidably connected to the torsion bar 72, and a pin 74 inserted into the U-shaped frame 73, wherein there are two U-shaped frames 73, which are respectively located on both sides of the connecting block 71, and the pin 74 is located near the U-shaped mouth of the U-shaped frame 73, so that the U-shaped frame 73 and the pin 74 can jointly form a through hole for inserting the handle rod.

[0047] This embodiment also provides a scooter strength test method, which can be implemented using the above-mentioned test device. The test method includes the following steps performed in sequence:

[0048] S1, fix the middle position of the deck of the scooter through the second deck fastening assembly 40, and make the handlebar of the scooter be located at the upper end of the scooter, that is, the scooter is upright, and at the same time, adjust the handlebar support rod of the scooter (the handlebar support rod is a telescopic rod) to a non-maximum length, and then apply an upward pulling force to one or both ends of the handlebar and maintain it for a predetermined time. Specifically, the handlebar is inserted into the corresponding clamp 70, and then the piston rod of the second cylinder 24 retracts to apply an upward pulling force to the handlebar. The specific pulling force size and the holding time (including the pulling force size and the holding time described below) need to be determined according to the specific specifications of the scooter; after that, observe whether the length of the handlebar support rod is stretched. If it is stretched, it means that the strength of the telescopic fixing structure of the handlebar support rod is unqualified. If the length of the handlebar support rod is not stretched, it means that the strength of the telescopic fixing structure of the handlebar support rod is qualified.

[0049] S2, adjust the length of the handle support rod to the maximum length, and then apply an upward pulling force to one or both ends of the handle rod through the second cylinder 24 again and maintain it for a predetermined time, and observe whether the connection positions at both ends of the handle support rod are firm, that is, observe whether the end of the handle support rod connected to the handle rod and the end of the handle support rod connected to the deck are cracked or shaking, and at the same time observe whether the deck is broken, so as to verify whether the strength of the deck is qualified.

[0050] S3. Invert the scooter so that the handlebar is located at the lower end of the scooter, then fix the rear end of the deck by the first deck fastening assembly 30, and set a support member on the lower side of the deck. Specifically, the support member is one of the top rods 22 of the support frame 20, and the top rod 22 is supported in the middle position of the deck. At the same time, the handlebar support rod of the scooter is adjusted to a non-maximum length, and then a downward pulling force is applied to one or both ends of the handlebar by the first cylinder 11 and maintained for a predetermined time. Specifically, the handlebar is inserted into the corresponding clamp 70, and then the piston rod of the first cylinder 11 is retracted to apply a downward pulling force to the handlebar. After that, observe whether the length of the handlebar support rod is stretched. If it is stretched, it means that the strength of the telescopic fixing structure of the handlebar support rod is unqualified. If the length of the handlebar support rod is not stretched, it means that the strength of the telescopic fixing structure of the handlebar support rod is qualified.

[0051] S4. Adjust the length of the handle support rod to the maximum length, and then apply a downward pulling force to one or both ends of the handle rod through the first cylinder 11 again and maintain it for a predetermined time, and observe whether the connection positions at both ends of the handle support rod are firm, that is, observe whether the end where the handle support rod is connected to the handle rod and the end where the handle support rod is connected to the deck are cracked or shaking, and at the same time observe whether the deck is broken, so as to verify whether the strength of the deck is qualified.

[0052] S5, repeating steps S1 to S4 for a predetermined number of times to complete the strength test of the scooter, and the specific number of times needs to be determined according to the actual situation. In this way, the testing method provided in this embodiment can complete the strength test of multiple positions of the scooter through one test.

[0053] Preferably, after step S1 and / or step S2 are completed, an upward pulling force is intermittently applied to one or both ends of the handlebar, and after step S3 and / or step S4 are completed, a downward pulling force is intermittently applied to one or both ends of the handlebar. The intermittent pulling force here means that after a predetermined pulling force is applied to the handlebar, the pulling force is immediately removed, and after a certain period of time, a predetermined pulling force is applied to the handlebar again and the pulling force is immediately removed, and this cycle is repeated. Specifically, in the present embodiment, the pulling force applied to the handlebar is provided by a cylinder, a pressure regulating valve is connected to the inlet pipe of the cylinder, and a pressure sensor is connected to the piston rod of the cylinder. When performing step S1, step S2, step S3 or step S4, the air pressure of the cylinder is controlled by the pressure regulating valve so that the pressure sensor is stabilized at a predetermined value, and the opening value of the pressure regulating valve is recorded at this time; after completing step S1, step S2, step S3 or step S4, the pressure regulating valve alternates between closing and opening to the said opening value, and intermittently applies downward or upward pulling force to one end or both ends of the handlebar.

[0054] The present invention is described in detail above with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments. Those skilled in the art can make various modifications to the present invention based on the prior art, such as changing the cylinders in the above embodiments to hydraulic cylinders, etc., which all fall within the protection scope of the present invention.

Claims

1. A scooter strength testing device, characterized in that: It comprises a base and a support frame fixedly connected to the base, a horizontally arranged crossbeam is arranged on the upper end of the support frame, a first deck fastening assembly and a second deck fastening assembly arranged opposite to each other are respectively arranged on the crossbeam and the base, and the second deck fastening assembly is located at a position corresponding to the support frame, a second cylinder which cooperates with the second deck fastening assembly is rotatably connected to the upper end of the support frame, a first cylinder which cooperates with the first deck fastening assembly is rotatably connected to the base, and the first cylinder is staggered with the support frame, pressure sensors are connected to the piston rods of the first cylinder and the second cylinder, each of the pressure sensors is connected to a connecting rod, and each connecting rod is connected to a clamp which cooperates with the handlebar of the scooter; The first deck fastening assembly includes a first pressure plate located above the beam and first screw rods respectively inserted at both ends of the first pressure plate, each of the first screw rods is simultaneously inserted in the beam, and each of the first screw rods is spirally connected with a first nut and a first hand wheel, the first nut abuts against the upper surface of the first pressure plate, and the first hand wheel abuts against the lower surface of the beam; the second deck fastening assembly includes a second pressure plate located above the base and second screw rods respectively inserted at both ends of the second pressure plate, each of the second screw rods is simultaneously inserted in the base, and each of the second screw rods is spirally connected with a second nut and a second hand wheel, the second nut abuts against the lower surface of the base, and the second hand wheel abuts against the upper surface of the second pressure plate.

2. The scooter strength testing device according to claim 1, characterized in that: The first cylinder and the second cylinder are both connected to a pressure regulating valve.

3. The scooter strength testing device according to claim 1, characterized in that: The clamp includes a connecting block fixedly connected to the connecting rod, a torsion bar fixedly connected to the connecting block, a U-shaped frame slidably connected to the torsion bar, and a pin inserted into the U-shaped frame. There are two U-shaped frames, which are respectively located on both sides of the connecting block, and the pin is located near the U-shaped mouth of the U-shaped frame.

4. The scooter strength testing device according to any one of claims 1 to 3, characterized in that: A connecting seat is rotatably connected to the cylinder body of the first cylinder, and a waist-shaped hole is provided on the connecting seat. A screw is inserted into the waist-shaped hole. A plurality of threaded holes arranged in a straight line are also provided on the base. The screw is spirally connected in one of the threaded holes, and the arrangement direction of each threaded hole and the length direction of the waist-shaped hole are perpendicular to the length direction of the beam.

5. A scooter strength testing method, characterized in that: The scooter strength testing device as claimed in claim 2 is used for testing, and the following steps are performed in sequence: S1, fixing the deck of the scooter and making the handlebar of the scooter be located at the upper end of the scooter, adjusting the handlebar support rod of the scooter to a non-maximum length, then applying an upward pulling force to one or both ends of the handlebar and maintaining it for a predetermined time, and observing whether the length of the handlebar support rod is extended; S2, adjusting the length of the handle support rod to the maximum length, then applying an upward pulling force to one or both ends of the handle rod and maintaining it for a predetermined time, and observing whether the connection positions of the two ends of the handle support rod are firm; S3, inverting the scooter so that the handlebar is located at the lower end of the scooter, then fixing the rear end of the deck, and arranging a support member on the lower side of the deck, while adjusting the handlebar support rod of the scooter to a non-maximum length, and then applying a downward pulling force to one or both ends of the handlebar and maintaining it for a predetermined time, and observing whether the length of the handlebar support rod is elongated; S4. Adjust the length of the handle support rod to the maximum length, then apply a downward pulling force to one or both ends of the handle rod and maintain it for a predetermined time, and observe whether the connection positions at both ends of the handle support rod are firm and whether the deck is broken.

6. The scooter strength testing method according to claim 5, characterized in that: After step S1 and / or step S2 are completed, an upward pulling force is intermittently applied to one or both ends of the handlebar, and after step S3 and / or step S4 are completed, a downward pulling force is intermittently applied to one or both ends of the handlebar.

7. The scooter strength testing method according to claim 6, characterized in that: The pulling force applied to the handle rod is provided by a cylinder, the inlet pipe of the cylinder is connected to a pressure regulating valve, and the piston rod of the cylinder is connected to a pressure sensor. When performing step S1, step S2, step S3 or step S4, the air pressure of the cylinder is controlled by the pressure regulating valve so that the pressure sensor is stabilized at a predetermined value, and the opening value of the pressure regulating valve at this time is recorded; after completing step S1, step S2, step S3 or step S4, the pressure regulating valve alternates between closing and opening to the opening value.

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