Outboard motor thrust testing device

Abstract

The utility model relates to the technical field of ship power driving, in particular to an outboard motor thrust testing device. The device comprises a slide rail arranged along a first direction, a test rod used for installing the outboard motor, and two sensing elements arranged towards the test rod. The length direction of the test rod is perpendicular to the first direction, the test rod is slidably arranged on the sliding rail, and the two sensing elements are symmetrically arranged relative to the outboard motor, so that the outboard motor installed on the test rod can drive the test rod to slide along the sliding rail to apply thrust to the sensing elements on the two sides. According to the utility model, the thrust of the outboard motor is transmitted to the test rod with a certain length, so that the test rod applies pressure to the symmetrical sensing elements on the two sides, and the pressure change generated by angle change can be transmitted to the sensing elements on the two sides by the test rod and recorded at the same time; the device can capture thrust changes caused by various attitude angle changes of the outboard motor, thrust testing is more comprehensive and accurate, the structure is symmetrical, stress is even, stable operation can be kept, and the testing result is reliable.

Description

Technical Field

[0001] The present embodiment relates to the technical field of ship power drive, and specifically to an outboard motor thrust testing device. Background Art

[0002] An outboard motor is a propulsion engine installed on the outside of the hull (side), usually suspended on the outside of the transom. Its main structure includes a power head, a gearbox, and a propeller. The power head is the core part of the outboard motor, similar to a complete internal combustion engine, responsible for providing power; the gearbox is located below the power head, which plays the role of transmitting power and reducing speed and increasing torque; the propeller, that is, the propeller, is responsible for converting power into propulsion for the ship. The purpose of thrust testing of outboard motors is to evaluate their thrust performance, ensure that the outboard motor can generate enough thrust to propel the ship forward, and meet its design requirements and actual application needs.

[0003] The existing patent with publication number CN202111475061X discloses an underwater thruster thrust test device. The working principle is to immerse the underwater thruster in a test pool, on which a first vertical pole is vertically installed. There is a support frame on the test pool, and a pressure sensor is installed on the frame close to the first vertical pole. In the initial state, the pressure sensor is not in contact with the first vertical pole. Then turn on the underwater thruster, the underwater thruster generates thrust to drive the first vertical pole to tilt and contact with the pressure sensor to generate pressure. The pressure sensor transmits the received pressure data to the computer, thereby obtaining the actual thrust of the underwater thruster.

[0004] The above technical solution can only test the thrust generated by the propeller driving forward. If the propeller changes its angle in the water, the sensor in a single direction cannot measure the change in thrust, and the test result is incomplete and inaccurate. In addition, when the test is initialized, the left and right counterweights need to be adjusted to achieve a completely horizontal structure, which is very difficult for water equipment. Utility Model Content

[0005] The embodiment of this specification provides an outboard motor thrust test device, which is characterized by:

[0006] It includes a slide rail arranged along a first direction, a test rod for installing an outboard motor, and two sensing elements arranged toward the test rod; the length direction of the test rod is perpendicular to the first direction, and the test rod is slidably arranged on the slide rail, and the two sensing elements are symmetrically arranged about the outboard motor, so that the outboard motor installed on the test rod can drive the test rod to slide along the slide rail to apply thrust to the sensing elements on both sides.

[0007] The embodiments of the present specification symmetrically set sensing elements on both sides of the outboard motor, and divide the thrust of the outboard motor into left and right directions through a test rod, which are recorded by the sensing elements on both sides respectively. This makes it possible to accurately and effectively record the change in thrust when the angle of the outboard motor changes, thereby solving the problem in the prior art that only one sensor is set to record the thrust in a single direction and at a specific angle.

[0008] As a further preferred embodiment, a docking portion is provided at the midpoint of the test rod, so that the outboard motor can be docked and installed with the test rod.

[0009] As a further preferred embodiment, the docking portion includes a rotatable shaft to adjust the angle between the outboard motor and the water surface.

[0010] As a further preferred solution, the device also includes two water tank racks arranged across the top of the test water tank, and the slide rail is arranged between the two water tank racks.

[0011] As a further preferred solution, the two sensing elements are respectively mounted at the ends of the two sink racks, so that when the test rod slides to the ends of the sink racks, a thrust can be applied to the sensing elements at the ends of the sink racks.

[0012] Further as a preferred embodiment, the device also includes a slider slidably connecting the slide rail and the test rod, and the slider includes a slide groove slidably matched with the slide rail, and a groove for installing the test rod.

[0013] As a further preferred solution, the groove is a rectangular groove, and the test rod is a rectangular square rod, and the sizes of the two are matched.

[0014] As a further preferred solution, dynamometer connecting parts are symmetrically provided at both ends of the test rod, and the dynamometer connecting parts are used to connect a dynamometer to pull the outboard motor.

[0015] As a further preferred solution, the device further comprises a processor and a display electrically connected to each other, and the display displays the detection curves of the sensing element and the dynamometer received by the processor.

[0016] As a further preferred solution, the dynamometer is electrically connected to the processor; the sensing element is electrically connected to the processor.

[0017] The main beneficial effects of the above technical solution are:

[0018] It can capture the thrust changes caused by various posture angles of the outboard motor, truly simulate the driving conditions in water, and make the thrust test more comprehensive and accurate; the test device is easy to operate and there is no need to repeatedly debug the test environment; the devices are all set to a symmetrical structure with uniform force, which can keep the device running stably and the test results are reliable.

[0019] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 It is a side view of the outboard motor thrust testing device of this embodiment.

[0022] Figure 2 1 is a top view of the outboard motor thrust testing device of this embodiment.

[0023] As shown in the figure: a slide rail 1, a slide groove 11, a groove 12, a test rod 2, a tensile gauge connecting part 21, a sensing element 3, a docking part 4, a rotating shaft 41, and a pool frame 5. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the specific implementation of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the implementation of the utility model.

[0025] An outboard engine thrust test device, such as Figure 1 and Figure 2 As shown, it comprises a slide rail 1 arranged along a first direction, a test rod 2 for mounting an outboard motor, and two sensing elements 3 arranged toward the test rod 2. The length direction of the test rod 2 is perpendicular to the first direction, and is slidably arranged on the slide rail 1. The two sensing elements 3 are symmetrically arranged about the outboard motor, so that the outboard motor mounted on the test rod 2 can drive the test rod 2 to slide along the slide rail 1 to apply thrust to the sensing elements 3 on both sides.

[0026] Specifically, the test device in this embodiment includes a slide rail 1, which is a long tubular structure and is laid along a first direction. The test rod 2 is a long rod, the length direction of which is perpendicular to the first direction, and is slidably installed on the slide rail 1, so that a bracket that can be used for support is set up on the slide rail 1, the outboard motor can be stably placed on the bracket formed by the test rod 2, and the single-point movement of the outboard motor is expanded into a linear movement. In addition, the sensing surfaces of the two sensing elements 3 are symmetrically arranged at both ends of the outboard motor facing the test rod 2. The purpose of the length direction of the test rod 2 and the first direction being perpendicular to each other is to keep the two ends of the test rod 2 at the same distance relative to the sensing element 3, so that they can contact the sensing element at the same time, and there will be no situation where one end of the test rod 2 contacts the sensing element due to the tilted angle, and the other end cannot contact, and thus the thrust cannot be recorded.

[0027] In one or more embodiments of the present specification, the device can symmetrically set multiple slide rails relative to the outboard motor and keep them parallel to each other, so that the test rod 2 can be stably placed on the slide rail 1, and the two ends are supported by the same force from the slide rail 1, and the test rod 2 will not shake or lose balance during sliding. In other embodiments of the present specification, multiple slide rails can be set asymmetrically, for example, adding a slide rail on one side to make the sliding smoother, and can also correspondingly carry larger outboard motors with irregular shapes. For example, in the case of a relatively narrow test environment, only one slide rail can be set on the travel track of the outboard motor, so that the slide rail is located in the middle of the test environment, ensuring the sliding function and leaving space for the sensing elements on both sides.

[0028] Correspondingly, a docking portion 4 is provided at the midpoint of the test rod 2, and the outboard motor is fixed to the test rod 2 by means of the docking portion, so that when the outboard motor moves, the test rod 2 is driven to keep sliding synchronously. The docking portion 4 is arranged at the midpoint of the test rod 2, so that the rod body of the test rod 2 is also symmetrical relative to the outboard motor, and the forward thrust of the outboard motor can be evenly distributed to both ends of the test rod 2, with the same torque, and can maintain a steady forward movement. If the rod length of the test rod 2 is inconsistent with the left and right sides of the outboard motor, the outboard motor will rotate due to the unbalanced torque and cannot move in a straight line.

[0029] More specifically, the docking portion 4 includes a rotating shaft 41, so that the outboard motor can rotate around the rod to adjust the angle between the outboard motor and the water surface, and can simulate various driving angles that occur during the actual sailing of the ship, so that the test results are more comprehensive. In some embodiments, the docking portion 4 is a clamping device, including a fixed bracket, a rotating shaft and a clamping structure, etc. After the clamping structure clamps the outboard motor, a screw can be used to fix the angle; in some embodiments, the docking portion 4 includes a rotating shaft, a docking groove and a rubber pad, etc. The shape of the docking groove can match the outboard motor structure to enable it to be embedded, and the rubber pad increases friction to reduce the vibration and impact generated by the outboard motor during operation. The difference in structure or shape is to meet specific test requirements.

[0030] The test device of the embodiment of the present specification also includes two pool frames 5 arranged across the test pool. The pool frames 5 are frame structures arranged on the wall of the test pool and across the pool. The two pool frames 5 are respectively located at both ends of the outboard motor's travel track, supporting the entire test device above the water surface. A slide rail 1 is vertically arranged between the two pool frames 5, and the two are welded and fixed to each other, so that the pool frames 5 and the slide rails 1 are not kept above the water surface by buoyancy, but are firmly and stably kept in a fixed state, carrying the sliding of the test rod 2.

[0031] The two sensing elements 3 are respectively installed at the ends of the two pool racks 5, so that when the test rod slides to the ends of the pool racks, thrust can be applied to the sensing elements at the ends of the pool racks. Specifically, the two sensing elements 3 are symmetrically installed at the ends of the pool racks 5 relative to the outboard motor, with the mounting surface facing the pool racks 5 and the sensing surface facing the test rod 2, so that when the test rod 2 slides along the slide rail 1 to the pool rack 5, it can just contact the sensing elements 3 on both sides to transfer the thrust. In some embodiments, the two pool racks 5 can be respectively installed with symmetrical sensing elements, so that the test rod can contact the sensing elements when sliding forward or backward, so that the forward thrust of the outboard motor can be recorded, and the backward power of the outboard motor can also be tested.

[0032] The test device of the embodiment of the present specification also includes a slider, so that the slide rail 1 and the test rod 2 can be slidably connected. Specifically, the slider includes a slide groove 11 that is slidably matched with the slide rail 1, and a groove 12 for installing the test rod 2. The slide rail 1 is provided with a guiding protrusion structure, which is engaged with the slide groove 11 to ensure the stable sliding of the slide groove 11 on the slide rail 1. In some embodiments, the engaged part is provided with a ball or is coated with lubricant to make the sliding smoother. The groove 12 is fixed to the middle part of the slide groove 11 by bolts. In this embodiment, the groove 12 is a rectangular groove, and the test rod 2 is a rectangular square rod. The sizes and shapes of the two match, so that the test rod 2 can be placed exactly in the groove 12 to prevent the test rod 2 from sliding back and forth, angular displacement or falling off the slide rail 1.

[0033] In short, the test device of the embodiment of the present specification includes a water pool frame 5 and a slide rail 1 which are perpendicular to each other, and the two are fixed to form a stable frame supported above the water surface. The test rod 2 is perpendicular to the slide rail 1, that is, it moves forward and backward parallel to the water pool frame 5, and the sensing element 3 is vertically fixed to the water pool frame 5, that is, it is perpendicular to the test rod 2, so that the test rod 2 can apply a thrust to the sensing element 3 when sliding.

[0034] The test device of the embodiment of the present specification also includes a dynamometer connection part 21 symmetrically arranged at both ends of the test rod 2, and the dynamometer connection part 21 is used to connect the dynamometer to pull the outboard motor. Specifically, the left and right ends of the test rod 2 are symmetrically provided with the dynamometer connection part 21, and the dynamometer can be connected to the test rod, and the outboard motor can be pulled to slide by pulling the dynamometer. The dynamometer connection part 21 is symmetrically arranged so that the pulling force of the dynamometer pulling forward can be evenly distributed to the two ends of the test rod 2, and the test rod 2 can slide forward smoothly with the outboard motor at the original angle without tipping or turning to change the test conditions. When the tensile machine pulls the outboard motor to slide smoothly, the displayed tension data is the friction between the slide groove 11 and the slide rail 1 when the two slide. In this embodiment, the dynamometer connection part is a rope, which is tied to the through holes opened at both ends of the test rod 2. In other embodiments, chains and bolts can also be used for fixing.

[0035] The device also includes a processor and a display that are electrically connected to each other. The processor is also electrically connected to the sensing element 3 and the dynamometer. The display shows the pressure curve recorded by the sensing element 3 and the friction curve measured by the dynamometer received by the processor. It can be seen that the data measured by the dynamometer is the friction of the slide rail 1 that the outboard motor needs to overcome when sliding. The sum of the results displayed by the two corresponding sensing elements 3 is the thrust applied to it by the outboard motor, that is, the thrust generated by the outboard motor not only overcomes the friction of sliding, but also exerts a force on the sensing element. The sum of the peak values ​​of the two force curves can be considered to be the real thrust generated by the outboard motor, which is the test result obtained by the test device of the embodiment of this specification. Specifically:

[0036] (1) First, adjust the outboard motor’s attitude angle according to the test case;

[0037] (2) Use the dynamometer to pull the test rod 2 and the outboard motor at a constant speed and smoothly, ensuring that the forward direction of the outboard motor remains parallel to the horizontal plane of the test pool during pulling;

[0038] (3) The dynamometer measures the maximum tension in this process, which is recorded by the processor and processed into a friction curve;

[0039] (4) The outboard motor is started at its maximum output power, so that it is brought close to the sensing element 3 to generate thrust thereon. The thrusts measured by the left and right sensing elements are recorded by the processor and then added together to form a thrust curve.

[0040] (5) The sum of the peak values ​​of the friction curve and the thrust curve is the outboard motor thrust measured at that attitude angle.

[0041] The beneficial effects that this embodiment may produce include:

[0042] 1. The single-point thrust of the outboard motor is converted into the thrust of the long rod on the sensing elements on both sides through the test rod. The thrust data is recorded on both sides together, which can capture the thrust changes caused by various attitude angles of the outboard motor, truly simulate the driving conditions in the water, and make the thrust test more comprehensive and accurate;

[0043] 2. The test device is easy to operate, and the reliable and stable test support structure eliminates the need for personnel to repeatedly debug the test environment;

[0044] 3. The sensing element and the test rod are set to a symmetrical structure with uniform force, which can keep the device running stably and the test results are reliable.

[0045] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "lateral", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An outboard motor thrust test device, characterized in that: It includes a slide rail arranged along a first direction, a test rod for installing an outboard motor, and two sensing elements arranged toward the test rod; The length direction of the test rod is perpendicular to the first direction, and the test rod is slidably arranged on the slide rail. The two sensing elements are symmetrically arranged about the outboard motor, so that the outboard motor installed on the test rod can drive the test rod to slide along the slide rail to apply thrust to the sensing elements on both sides.

2. The outboard motor thrust test device according to claim 1, characterized in that: A docking portion is provided at the midpoint of the test rod, so that the outboard motor can be docked and installed with the test rod.

3. The outboard motor thrust test device according to claim 2, characterized in that: The docking portion includes a rotatable shaft to adjust the angle between the outboard motor and the water surface.

4. The outboard motor thrust test device according to claim 1, characterized in that: It also includes two water pool racks arranged across the top of the test water pool, and the slide rail is arranged between the two water pool racks.

5. The outboard motor thrust test device according to claim 4, characterized in that: The two sensing elements are respectively installed at the ends of the two pool racks, so that when the test rod slides to the ends of the pool racks, a thrust can be applied to the sensing elements at the ends of the pool racks.

6. The outboard motor thrust test device according to claim 1, characterized in that: It also includes a sliding block slidably connecting the sliding rail and the test rod, and the sliding block includes a sliding groove slidably matched with the sliding rail and a groove for installing the test rod.

7. The outboard motor thrust test device according to claim 6, characterized in that: The groove is a rectangular groove, and the test rod is a rectangular square rod, and the sizes of the two are matched.

8. The outboard motor thrust test device according to claim 1, characterized in that: Tension gauge connecting parts are symmetrically arranged at both ends of the test rod, and the tension gauge connecting parts are used to connect the tension gauge to pull the outboard motor.

9. The outboard motor thrust test device according to claim 8, characterized in that: The device further comprises a processor and a display electrically connected to each other, and the display displays the detection curve of the sensing element and the dynamometer received by the processor.

10. The outboard motor thrust test device according to claim 9, characterized in that: The dynamometer is electrically connected to the processor; The sensing element is electrically connected to the processor.

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