Outboard motor gearbox operation testing device

Abstract

The utility model provides an outboard motor gear box operation testing device, which is used for supporting and driving a gear box and a propeller connected with the gear box, and comprises a support and a load motor, the upper end of the support is provided with a supporting plate, and an output shaft of the load motor is detachably arranged on the supporting plate downwards. Two supporting arms spaced from each other are arranged below the supporting plate, a gear box is arranged on the two supporting arms, a propeller is located below the middle of the two supporting arms, and an output shaft of the load motor is connected with a connecting rod on the gear box. The supporting device provides supporting and operation power for the gear box, repeated disassembly and assembly of the gear box and an outboard engine are avoided, and operation time is saved.

Description

Technical Field

[0001] This utility model relates to the field of testing and setting technology, specifically to a test device for the operation of an outboard motor gearbox. Background Technology

[0002] Outboard motors consist of an engine, gearbox, and propeller. The engine drives the gearbox, which in turn drives the propeller to propel the boat forward. After gearbox maintenance, its operation needs to be retested. Traditionally, this involves reconnecting the engine to the gearbox, with the engine driving the gearbox, and maintenance personnel observing the gearbox's operation to determine if the maintenance was successful. However, this retesting method requires reconnecting the engine and gearbox, and if the maintenance fails, disassembly and reassembly are necessary, which is time-consuming. Furthermore, outboard motors have unconventional dimensions, making it difficult for common platforms to provide stable support. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of the prior art by proposing an outboard motor gearbox operation testing device that provides support and power to the gearbox, avoids repeated disassembly and reassembly of the gearbox and outboard motor, and saves operation time.

[0004] This utility model proposes an outboard motor gearbox operation testing device for supporting and driving the gearbox and the propeller connected thereto. It includes a bracket and a load motor. A support plate is provided at the upper end of the bracket. The output shaft of the load motor is detachably mounted on the support plate with its shaft facing downward. Two support arms are provided below the support plate, spaced apart from each other. The gearbox is mounted on the two support arms. The propeller is located in the middle and below the two support arms. The output shaft of the load motor is connected to a connecting rod on the gearbox.

[0005] The preferred technical solution of this utility model is as follows: a fixing plate is detachably provided on the support arm, and the fixing plate is pressed onto the gearbox.

[0006] The preferred technical solution of this utility model is as follows: a waist-shaped hole is provided on the fixing plate, the waist-shaped hole extends from one of the supporting arms to the other supporting arm, and a connector is provided in the waist-shaped hole to connect the fixing plate and the supporting arm.

[0007] The preferred technical solution of this utility model is as follows: a spline sleeve is provided on the output shaft of the load motor, a spline shaft is provided on the connecting rod, and the spline shaft is inserted into the spline sleeve.

[0008] The preferred technical solution of this utility model is as follows: a first fixing hole is provided on the spline sleeve along its radial direction, and a second fixing hole is provided on the spline shaft along its radial direction. The first fixing hole corresponds to the second fixing hole, and a pin is inserted into the first fixing hole and the second fixing hole.

[0009] The preferred technical solution of this utility model is as follows: a limiting ring is provided on the outside of the spline sleeve, and the inner wall of the limiting ring stops outside the first fixing hole.

[0010] The preferred technical solution of this utility model is as follows: an elastic element and a buffer plate are provided on the end face of the support arm facing the gearbox, and the elastic element connects the buffer plate and the support arm.

[0011] The preferred technical solution of this utility model is that a buffer pad is laid on the buffer plate.

[0012] The preferred technical solution of this utility model further includes a controller for controlling the speed of the load motor, the controller being electrically connected to the load motor.

[0013] The outboard motor gearbox operation testing device of this utility model has the following beneficial effects:

[0014] 1. A bracket and a load motor are installed. The bracket supports the gearbox, and the load motor is connected to the gearbox linkage to drive the gearbox. The staff can directly detect the operation of the gearbox and determine whether there is a problem with the gearbox. There is no need to repeatedly disassemble and reassemble the engine and gearbox for inspection, which improves maintenance efficiency.

[0015] 2. A fixing plate is installed on the bracket. The fixing plate is pressed onto the gearbox to limit the gearbox and prevent it from shaking or displacing during the operation of the gearbox driven by the load motor. The fixing plate is connected to the support arm through the slotted hole. The displacement of the fixing plate is adjusted to ensure that the fixing plate is effectively pressed onto the gearbox. The fixing plate limits the gearbox and prevents the gearbox from jumping on the support arm, which would affect the stability of the test.

[0016] 3. The elastic element connects the support arm and the buffer plate. The buffer plate is supported under the gearbox to buffer and dampen the gearbox, reduce the vibration of the gearbox when the load motor drives the gearbox, reduce the gearbox displacement, and ensure the stability of the gearbox operation. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0019] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of a test performed during an embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram from another perspective during the testing of an embodiment of this utility model.

[0022] Figure 5 This is a side view of the support arm according to an embodiment of the present invention.

[0023] In the diagram: 10. Bracket; 11. Support arm; 12. Support plate; 13. Fixing plate; 131. Waist-shaped hole; 132. Connector; 14. Elastic element; 15. Buffer plate; 20. Load motor; 21. Spline sleeve; 22. Spline shaft; 23. Limiting ring; 30. Gearbox; 31. Vortex baffle; 32. Propeller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0025] Please see Figures 1 to 5 An outboard motor gearbox operation testing device includes a bracket 10 and a load motor 20. The bracket 10 supports the gearbox 30 and the propeller 32 connected thereto. The load motor 20 is connected to a connecting rod on the gearbox 30 to drive the gearbox 30 to run. The operator can observe the running gearbox 30 and judge the status of the gearbox 30.

[0026] The bracket 10 is provided with support arms 11, with two support arms 11 spaced apart, and the gearbox 30 is located between the two support arms 11. The outer wall of the gearbox 30 is provided with vortex baffles 31, which are symmetrically arranged on both sides of the outer wall of the gearbox 30. The two support arms 11 are respectively supported below the two side vortex baffles 31, providing support for the gearbox 30 and the propeller 32 connected to it.

[0027] When the support arm 11 provides support for the gearbox 30 below the baffle plate 31, the connecting rod on the gearbox 30 is in a vertically upward state, and the propeller 32 connected to the gearbox 30 is directly below the gearbox 30. The position of the gearbox 30 and the propeller 32 is the same as when the outboard motor is working. In this position, the load motor 20 drives the gearbox 30 to run, which can better reflect whether the state of the gearbox 30 meets the working requirements.

[0028] The distance between the two support arms 11 should be greater than the maximum outer dimension of the gearbox 30 below the baffle plate 31, so that the gearbox 30 can move smoothly from the end of the support arm 11 to the middle position of the support arm 11 during installation.

[0029] Furthermore, a fixing plate 13 is provided on the support arm 11. The fixing plate 13 presses against the vortex baffle 31 of the gearbox 30. The fixing plate 13 is connected to the support arm 11 and forms a limit above the vortex baffle 31 to prevent the gearbox 30 from jumping during operation and affecting the stability of the gearbox 30. Preferably, the fixing plate 13 has an oblong hole 131 extending from one support arm 11 to the other support arm 11. A connector 132 is provided in the oblong hole 131 to connect the fixing plate 13 to the support arm 11. Moving the fixing plate 13 along the oblong hole 131 changes the distance between the fixing plate 13 and the vortex baffle 31, ensuring that the fixing plate 13 is effectively pressed against the vortex baffle 31, thus limiting the gearbox 30. In this embodiment, the connector 132 is a bolt. Preferably, two connectors 132 are provided in the waist-shaped hole 131. The two connectors 132 are simultaneously provided in the waist-shaped hole 131 to restrict the rotation of the fixing plate 13, so that the fixing plate 13 can only move in a straight line along the waist-shaped hole 131, which facilitates adjustment.

[0030] Furthermore, the support arm 11 is provided with an elastic element 14 and a buffer plate 15. The elastic element 14 is disposed on the end face of the support arm 11 facing the vortex baffle 31 of the gearbox 30, and connects the support arm 11 and the buffer plate 15. In this embodiment, the elastic element 14 is a spring, and its two ends are respectively fixedly connected to the upper end face of the support wall and the buffer plate 15. The support arm 11 contacts the vortex baffle 31 through the buffer plate 15. The elastic element 14 can provide buffering and shock absorption for the gearbox 30, reduce the vibration generated during the operation of the gearbox 30, reduce the displacement of the gearbox 30, improve the operating stability of the gearbox 30, ensure the stability of the test, and facilitate the observation by the staff.

[0031] Preferably, buffer pads are provided on the upper end face of the buffer plate 15 and the lower end face of the fixed plate 13. Specifically, the buffer pads are rubber pads, which are used to change the hard contact between the gearbox 30 and the buffer plate 15 and the fixed plate 13 into a soft contact, thereby reducing the collision between the gearbox 30 and the buffer plate 15 and the fixed plate 13 due to vibration, which would cause wear on the outer surface of the gearbox 30.

[0032] A horizontally positioned support plate 12 is provided at the upper end of the bracket 10. The load motor 20 is fixedly mounted on the support plate 12. The support plate 12 has several threaded holes, and the load motor 20 is fixed to the support plate 12 with screws. The output shaft of the load motor 20 is arranged downwards. The support plate 12 has a through hole through which the output shaft of the load motor 20 can pass. The output shaft of the load motor 20 is connected to the connecting rod on the gearbox 30. The load motor 20 drives the connecting rod to rotate, thereby driving the gearbox 30 to run.

[0033] A spline sleeve 21 is fixedly mounted on the output shaft of the load motor 20, and a spline shaft 22 is fixedly mounted on the upper end of the connecting rod. The spline shaft 22 is sleeved inside the spline sleeve 21. The load motor 20 drives the connecting rod to rotate through the spline sleeve 21 and the spline shaft 22, which has good centering and can transmit a large torque. Furthermore, a first fixing hole is opened on the spline sleeve 21, which extends radially and completely penetrates the spline sleeve 21. A second fixing hole is opened on the spline shaft 22, which extends radially and completely penetrates the spline shaft 22. When the spline sleeve 21 and the spline shaft 22 are connected by insertion, the first fixing hole and the second fixing hole correspond to each other, and the central axis of the first fixing hole and the central axis of the second fixing hole are collinear. A pin is inserted into the first fixing hole and the second fixing hole to fix the spline shaft 22 and the spline sleeve 21 to prevent the spline shaft 22 from axially displacing from the spline sleeve 21.

[0034] Preferably, when the pin is inserted into the first fixing hole and the second fixing hole, neither end of the pin extends beyond the outer wall of the spline sleeve 21. A limiting ring 23 is provided on the outer sleeve of the spline sleeve 21, and the inner wall of the limiting ring 23 corresponds to the first fixing hole. The limiting ring 23 limits the pin to prevent it from coming out of the first fixing hole due to vibration during the operation of the load motor 20, thus preventing injury to the operator. In this embodiment, the limiting ring 23 is an open-type fixing ring. This type of limiting ring 23 has an opening on its side wall, and the overall limiting ring 23 is C-shaped. A bolt is provided at the opening. By tightening the bolt, the opening is reduced, and the limiting ring 23 grips the outer wall of the spline sleeve 21, thereby fixing the limiting ring 23 to the spline sleeve 21. The limiting ring 23 forms a stop outside the first fixing hole to prevent the pin from coming out.

[0035] It also includes a controller, which is electrically connected to the load motor 20. The controller adjusts the output speed of the load motor 20 so that the gearbox 30 operates at its rated speed. The operator can judge the condition of the gearbox 30 based on its operating stability and sound, and thus determine whether the gearbox 30 has passed the maintenance.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A test device for the operation of an outboard motor gearbox, characterized in that, The support (10) and load motor (20) are used to support and drive the gearbox (30) and the propeller (32) connected thereto. The support (10) has a support plate (12) at its upper end. The output shaft of the load motor (20) is detachably mounted on the support plate (12) with its output shaft facing downward. Two support arms (11) are provided below the support plate (12) and spaced apart from each other. The gearbox (30) is mounted on the two support arms (11) and the propeller (32) is located below the middle of the two support arms (11). The output shaft of the load motor (20) is connected to the connecting rod on the gearbox (30).

2. The outboard motor gearbox operation testing device according to claim 1, characterized in that, A fixing plate (13) is detachably provided on the support arm (11), and the fixing plate (13) is pressed onto the gearbox (30).

3. The outboard motor gearbox operation testing device according to claim 2, characterized in that, The fixing plate (13) has a waist-shaped hole (131) extending from one of the support arms (11) to the other support arm (11). A connector (132) is provided in the waist-shaped hole (131) to connect the fixing plate (13) and the support arm (11).

4. The outboard motor gearbox operation testing device according to claim 1, characterized in that, A spline sleeve (21) is provided on the output shaft of the load motor (20), and a spline shaft (22) is provided on the connecting rod. The spline shaft (22) is inserted into the spline sleeve (21).

5. The outboard motor gearbox operation testing device according to claim 4, characterized in that, The spline sleeve (21) has a first fixing hole arranged radially thereon, and the spline shaft (22) has a second fixing hole arranged radially thereon. The first fixing hole corresponds to the second fixing hole, and the pin is inserted into the first fixing hole and the second fixing hole.

6. The outboard motor gearbox operation testing device according to claim 5, characterized in that, A limiting ring (23) is provided on the outside of the spline sleeve (21), and the inner wall of the limiting ring (23) stops outside the first fixing hole.

7. The outboard motor gearbox operation testing device according to claim 1, characterized in that, The support arm (11) is provided with an elastic element (14) and a buffer plate (15) on the end face facing the gearbox (30), and the elastic element (14) connects the buffer plate (15) and the support arm (11).

8. The outboard motor gearbox operation testing device according to claim 7, characterized in that, A cushioning pad is laid on the buffer plate (15).

9. The outboard motor gearbox operation testing device according to claim 1, characterized in that, It also includes a controller for controlling the speed of the load motor (20), the controller being electrically connected to the load motor (20).

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