Leakage test tool structure for motorcycle fuel tank

Abstract

A motorcycle fuel tank leakage test tool structure comprises a base, the front end of the base is provided with a backer adjusting mechanism, the backer adjusting mechanism comprises a front baffle plate, the front baffle plate is horizontally and movably connected with a fuel tank limiting separation blade, and the rear end of the base is provided with a width adjusting mechanism with an adjustable inclination angle. The width adjusting mechanism comprises a left supporting block and a right supporting block which synchronously and oppositely move left and right with the backer adjusting mechanism as the center to clamp and position the oil tank left and right. The oil tank fixing and positioning device is reasonable and compact in structure, is matched with an air tightness tester to detect whether an iron oil tank leaks air or not, and has the adjusting function in front, back, left and right dimensions, and the backer adjusting mechanism and the width adjusting mechanism are fixed in front, back, left and right dimensions respectively. Under the condition that the oil tank port is aligned and matched with the center of the equipment testing head after the oil tank is positioned, the inclination angle is adjustable by combining with the width adjusting mechanism, and the device can adapt to oil tanks with different inclination specifications.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment, and in particular to a testing fixture, specifically a motorcycle fuel tank leak testing fixture structure. Background Technology

[0002] With the continuous improvement of motorcycle production efficiency and the increasing level of automation, the sealing performance of motorcycle fuel tanks is extremely important, as they are used for refueling gasoline. However, due to the different models and specifications of motorcycles, specific fixtures are required to fix the fuel tanks in place for testing with an airtightness tester. This results in a wide variety of fixtures, which are inconvenient to use. Therefore, a fixture capable of simultaneously fixing multiple different models and specifications of motorcycle fuel tanks is needed to meet the positioning requirements for sealing performance testing. Utility Model Content

[0003] This utility model aims to solve the problems existing in the prior art by providing a motorcycle fuel tank leak testing fixture structure, which solves the problem of complex and cumbersome positioning when testing the sealing performance of different specifications of motorcycle fuel tanks, and meets the needs of rapid and stable leak testing of fuel tanks of different specifications.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This motorcycle fuel tank leak test fixture structure includes a base, and a backrest adjustment mechanism for adjusting the front and rear positions of the fuel tank is provided at the front end of the base. The backrest adjustment mechanism includes a front baffle fixed on the front side, and a fuel tank limiting baffle for moving the fuel tank is horizontally connected to the front baffle. The rear end of the base is provided with a width adjustment mechanism with an adjustable tilt angle. The width adjustment mechanism includes a left support block and a right support block that move synchronously to the left and right sides of the fuel tank to clamp and position it. The backrest adjustment mechanism and the width adjustment mechanism form a positioning fixture mechanism that can adjust the width to fix fuel tanks of different specifications and align the fuel tank opening with the test head. With this setup, the main function of this fixture is to work with an airtightness tester to check for leaks in iron oil tanks. This fixture is used to fix and position oil tanks, and its main features are: This fixture has multi-dimensional adjustment functions in all directions, allowing it to adapt to various models of oil tanks for sealing tests. Specifically, firstly, the left and right width adjustment mechanism adjusts the movement of the left and right support blocks, which in turn changes the left and right clamping and fixing width of the oil tank accordingly; secondly, the backrest adjustment mechanism adjusts the oil tank limit baffle by moving it forward and backward to achieve front-to-back adjustment, ensuring that the oil tank opening is aligned with the center of the airtightness tester's test head; finally, the oil tank tilt adjustment is available. Since both the oil tank opening and the oil tank mounting base have tilt angles, adjustments must be made according to the actual situation of each oil tank. The width adjustment mechanism has an adjustable tilt angle function, ensuring that it can be clamped and fixed when various oil tanks are tilted. In summary, this fixture can handle leak testing of oil tanks of various specifications with different widths, inclinations, and lengths. One set of fixtures can replace the effect of multiple sets of individual fixtures, greatly saving the production cost and fixture management cost of custom-made fixtures for a single oil tank in traditional seal testing.

[0005] As a further improvement of this utility model, the width adjustment mechanism includes a horizontally placed optical axis. The tail ends of the left and right support blocks are slidably connected to the left and right sides of the optical axis, respectively. The front ends of the left and right support blocks are connected to positive and negative threaded rods. The left and right support blocks are respectively located on the positive and negative threads of the positive and negative threaded rods. A first handwheel is fixed to the end of the positive and negative threaded rods, forming a control structure that controls the synchronous relative movement of the left and right support blocks on the optical axis by rotating the first handwheel. The width adjustment mechanism forms a left and right fixed structure by clamping and positioning the left and right support blocks. The tail ends of the left and right support blocks are slidably connected to the left and right sides of the optical axis and move by rotating the positive and negative threaded rods at their front ends. The rotation of the positive and negative threaded rods is driven by the first handwheel, that is, the first handwheel drives the positive and negative threaded rods to rotate, thereby causing the left and right support blocks to move relative to each other on the optical axis.

[0006] As a further improvement of this utility model, a tilt adjustment rod is connected to the base. The tilt adjustment rod is an adjustable length adjustment rod structure. The center section of the optical axis is fixed to the top of the tilt adjustment rod, forming a structure in which the tilt adjustment rod changes the height of the tail end of the width adjustment mechanism by adjusting its length, thereby controlling its tilt. With this setting, the height of the optical axis at the tail end of the width adjustment mechanism can be changed by utilizing the adjustable length structure of the tilt adjustment rod, thereby changing the height of the tail end of the width adjustment mechanism and thus changing the tilt. This allows the width adjustment mechanism to adapt to test oil tanks of various sizes and specifications, increasing support for different oil tanks and improving its application range and adaptability.

[0007] As a further improvement of this utility model, a screw is rotatably connected to the front baffle, and a tank limit baffle is fixedly connected to the tail end of the screw. A second handwheel is fixed to the front end of the screw, forming a control structure for the second handwheel to control the movement of the tank limit baffle. With this configuration, the second handwheel controls the screw to rotate, thereby driving the tank limit baffle to move. The rotation control of the second handwheel is simple and convenient, and the tank limit baffle movement efficiency is more efficient, resulting in higher inspection and installation efficiency.

[0008] As a further improvement of this utility model, the bottom end of the inclination adjustment rod is rotatably connected to the base, and the rotatable connection point is aligned with the oil tank limiting baffle on the same plane. With this arrangement, the width adjustment mechanism forms a symmetrical clamping structure centered on the oil tank limiting baffle, making the structure more stable when fixed in all directions.

[0009] As a further improvement of this utility model, the position of the first handwheel does not exceed the end position of the optical shaft. With this setting, it can be ensured that the tail ends of the left and right support blocks are always connected to the optical shaft when the first handwheel rotates, that is, the left and right support blocks will not detach from the optical shaft due to the rotation of the first handwheel, ensuring that the left and right support blocks are connected to the optical shaft. It can also simplify the limiting structure for the left and right support blocks at the end of the optical shaft, thereby simplifying the structure.

[0010] As a further improvement of this utility model, the angle between the tilt adjustment rod and the base is less than 90° when the rod is tilted forward during operation. With this setting, the center of gravity of the tilt adjustment rod is forward during operation, avoiding the situation where the width adjustment mechanism is not stable and tilts backward due to the center of gravity being backward, thus effectively ensuring the stability of the overall structure.

[0011] The beneficial effects of this utility model are as follows: This utility model has a reasonable and compact structure. It is an oil tank fixing and positioning device used in conjunction with an airtightness tester to inspect iron oil tanks for leaks. It can be adapted to various models of oil tanks for leak testing. This fixture has adjustment functions in multiple dimensions (front, back, left, and right). The backrest adjustment mechanism and the width adjustment mechanism are fixed from the front and back and left and right dimensions respectively. While ensuring that the oil tank opening is aligned with the center of the equipment's test head after positioning, the tilt angle is adjustable when combined with the width adjustment mechanism, accommodating oil tanks of various tilt specifications. This fixture can handle leak testing of oil tanks of different sizes, tilt angles, and lengths. One set of fixtures can replace multiple independently customized fixtures, greatly saving the manufacturing cost and management cost of a separate fixture for each oil tank. It has a wider range of applications, better results, and is suitable for widespread adoption. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Explanation of reference numerals in the attached diagram: 1. Base; 2. Front baffle; 3. Oil tank limit baffle; 4. Left support block; 5. Right support block; 6. Optical shaft; 7. Positive and negative threaded rods; 8. First handwheel; 9. Inclination adjustment rod; 10. Screw; 11. Second handwheel. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Referring to the attached drawings: This motorcycle fuel tank leak test fixture structure in this embodiment includes a base 1. The front end of the base 1 is provided with a backrest adjustment mechanism for adjusting the front and rear positions of the fuel tank. The backrest adjustment mechanism includes a front baffle 2 fixed on the front side. A fuel tank limiting baffle 3 that moves horizontally on the front baffle 2 is connected to the fuel tank. The rear end of the base 1 is provided with a width adjustment mechanism with an adjustable tilt angle. The width adjustment mechanism includes a left support block 4 and a right support block 5 that move synchronously relative to each other around the backrest adjustment mechanism to clamp and position the fuel tank on the left and right. The backrest adjustment mechanism and the width adjustment mechanism together form a positioning fixture mechanism that can adjust the width to fix fuel tanks of different specifications and align the fuel tank opening with the test head.

[0016] The width adjustment mechanism includes a horizontally placed optical axis 6, with the tail ends of a left support block 4 and a right support block 5 slidably connected to the left and right sides of the optical axis 6, respectively. The front ends of the left support block 4 and the right support block 5 are connected to a positive and negative threaded rod 7, with the left support block 4 and the right support block 5 located on the positive and negative threads of the positive and negative threaded rod 7, respectively. A first handwheel 8 is fixed to the end of the positive and negative threaded rod 7, forming a control structure that controls the left support block 4 and the right support block 5 to move synchronously relative to each other on the optical axis 6 by rotating the first handwheel 8.

[0017] A tilt adjustment rod 9 is connected to the base 1. The tilt adjustment rod 9 is an adjustable rod structure. The center section of the optical axis 6 is fixed to the top of the tilt adjustment rod 9, forming a structure in which the tilt adjustment rod 9 controls the tilt by adjusting the length to change the height of the tail end of the width adjustment mechanism. Preferably, when the tilt adjustment rod 9 is working, it tilts forward and the angle between it and the base 1 is less than 90°.

[0018] A screw 10 is rotatably connected to the front baffle 2, and an oil tank limit baffle 3 is fixedly connected to the tail end of the screw 10. A second handwheel 11 is fixed to the front end of the screw 10, forming a control structure for the second handwheel 11 to control the movement of the oil tank limit baffle 3.

[0019] The bottom end of the tilt adjustment rod 9 is rotatably connected to the base 1, and the rotatable connection point is aligned with the oil tank limit baffle 3 on the same plane.

[0020] Preferably, the position of the first handwheel 8 does not exceed the position of the end of the optical axis 6.

[0021] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A motorcycle fuel tank leak testing fixture structure, comprising a base (1), characterized in that: The base (1) has a backrest adjustment mechanism at the front end for adjusting the front and rear positions of the oil tank. The backrest adjustment mechanism includes a front baffle (2) fixed on the front side. The front baffle (2) is horizontally connected to an oil tank limiting baffle (3) for moving the oil tank. The base (1) has a width adjustment mechanism with an adjustable tilt angle at the rear end. The width adjustment mechanism includes a left support block (4) and a right support block (5) that move synchronously with the backrest adjustment mechanism to clamp and position the oil tank on the left and right sides. The backrest adjustment mechanism, together with the width adjustment mechanism, forms a positioning fixture mechanism that can adjust the width of oil tanks of different specifications and align the oil tank opening with the test head.

2. The motorcycle fuel tank leak testing fixture structure according to claim 1, characterized in that: The width adjustment mechanism includes a horizontally placed optical axis (6). The tail ends of the left support block (4) and the right support block (5) are slidably connected to the left and right sides of the optical axis (6), respectively. The front ends of the left support block (4) and the right support block (5) are connected to the positive and negative threaded rods (7). The left support block (4) and the right support block (5) are respectively located on the positive and negative threads of the positive and negative threaded rods (7). The end of the positive and negative threaded rods (7) is fixed with a first handwheel (8) to form a control structure that controls the left support block (4) and the right support block (5) to move synchronously relative to each other on the optical axis (6) by rotating the first handwheel (8).

3. The motorcycle fuel tank leak testing fixture structure according to claim 2, characterized in that: The base (1) is connected to a slope adjustment rod (9). The slope adjustment rod (9) is an adjustable rod structure. The center section of the optical axis (6) is fixed to the top of the slope adjustment rod (9) to form a slope adjustment rod (9) structure that controls the slope by adjusting the length to change the height of the tail end of the width adjustment mechanism.

4. The motorcycle fuel tank leak testing fixture structure according to claim 1, characterized in that: A screw (10) is rotatably connected to the front baffle (2), and the oil tank limiting baffle (3) is fixedly connected to the tail end of the screw (10). A second handwheel (11) is fixed to the front end of the screw (10) to form a control structure in which the second handwheel (11) controls the movement of the oil tank limiting baffle (3).

5. The motorcycle fuel tank leak testing fixture structure according to claim 3, characterized in that: The bottom end of the tilt adjustment rod (9) is rotatably connected to the base (1), and the rotatable connection point is aligned with the oil tank limit baffle (3) on the same plane.

6. The motorcycle fuel tank leak testing fixture structure according to claim 2, characterized in that: The position of the first handwheel (8) does not exceed the position of the end of the optical axis (6).

7. The motorcycle fuel tank leak testing fixture structure according to claim 3 or 5, characterized in that: When the tilt adjustment rod (9) is working, it tilts forward and the angle between it and the base (1) is less than 90°.

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