Water testing clamp for ship outboard engine

Abstract

The utility model relates to the technical field of ship outboard engines, in particular to a water testing clamp for a ship outboard engine. Comprising a three-way fork head, the middle of the three-way fork head communicates with a water inlet, the two ends of the three-way fork head communicate with elastic hoses correspondingly, and opposite chuck assemblies are arranged at the tail ends of the elastic hoses; the chuck assembly comprises a hollow corrugated pipe, a sealing edge is arranged on the side, facing the outboard engine, of the corrugated pipe, the sealing edge is of a herringbone structure along the axial section of the corrugated pipe, and an edge sealing cavity is formed in the sealing edge. The connection sealing performance of the chuck assembly of the water test clamp and the outboard engine water filling nozzle is enhanced, and falling is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship outboard motor technology field especially is used for a water test clamp for ship outboard motor. BACKGROUND

[0002] The water test clamp of ship outboard motor is a special device for outboard motor, and its core function is to complete cooling water channel cleaning, sealing detection and power system running-in by simulating the actual working environment of outboard motor in water. The water test clamp is usually composed of a clamping module, a water circulation system and a sealing detection assembly. The water outlet of the elastic hose is fixed on the water inlet of the outboard motor through the clamping rod, and the impurities and blockages in the water channel are washed by the filtered circulating water.

[0003] During the connection process of the chuck assembly and the water inlet of the outboard motor, the sealing performance of the chuck assembly and the water inlet of the outboard motor becomes a significant technical bottleneck. For example, the traditional chuck assembly usually adopts rigid bolts fixed with rubber gaskets for sealing. However, during high-pressure water circulation or long-term immersion testing, the rubber gasket is prone to sealing failure due to material aging or installation errors, causing cooling water leakage or pressure fluctuations. In addition, the precision of the chuck assembly is insufficient, resulting in poor fit between the clamping surface and the shaft end of the outboard motor, further exacerbating the risk of leakage, which requires frequent calibration and silicone pad compensation, but it is still difficult to completely eliminate small leaks.

[0004] Therefore, the present application provides a water test clamp for ship outboard motor to solve the problems raised in the background art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a water test clamp for ship outboard motor to solve the problems of poor sealing performance of the chuck assembly of the existing water test clamp and easy falling off when connected with the water inlet of the outboard motor.

[0006] To solve the above technical problems, the utility model provides a water test clamp for ship outboard motor, which comprises a three-way fork head, a water inlet connected to the middle part of the three-way fork head, and elastic hoses connected to the two ends of the three-way fork head, respectively. Opposite chuck assemblies are arranged at the ends of the elastic hoses.

[0007] The chuck assembly comprises a hollow corrugated pipe, and a sealing edge is arranged on the side of the corrugated pipe facing the outboard motor. The sealing edge has a "herringbone" structure along the axial section of the corrugated pipe, and an edge sealing cavity is formed in the sealing edge.

[0008] Further improvement of the utility model technical solution is that a vertical head is arranged at the end of the elastic hose, one end of the vertical head is connected to the end of the elastic hose, a water outlet is arranged at the other end of the vertical head, and the water outlet is connected to the axial through hole of the corrugated pipe.

[0009] The further improvement of the utility model technical scheme lies in that: a V-shaped clamp rod is arranged on the vertical clamp head, two ends of the clamp rod are respectively provided with fixing rings, the fixing rings are sleeved on the axial one end of the bellows along the bellows, the material of the fixing ring clamp rod is 45 steel, the tensile strength is greater than or equal to 600 MPa, and the clamp rod provides clamping force for the clamp head assembly.

[0010] The further improvement of the utility model technical scheme lies in that: the bellows is a rubber hose, the bellows is provided with at least two layers of corrugations, and the wall thickness of the bellows is 2-4 mm.

[0011] The further improvement of the utility model technical scheme lies in that: the bellows and the sealing edge are integrally arranged.

[0012] The further improvement of the utility model technical scheme lies in that: the diameter of the bellows is 8-10 cm.

[0013] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0014] 1. The water testing clamp for the outboard motor of the ship is characterized in that: the clamp head assembly of the water testing clamp comprises a hollow bellows, the bellows is beneficial to compensating displacement caused by water flow impact in the water testing process through elastic expansion and contraction of the axial corrugation, specifically, the clamp head assembly and the sealing position of the water inlet of the outboard motor are accompanied by high-pressure water pressure and high-frequency vibration of the outboard motor in the water testing process, the corrugation layer of the bellows absorbs energy through alternate compression-rebound, avoids resonance separation of the sealing surface, and the bellows is hollow, and the internal cavity is larger than the cavity volume of the traditional clamp, so that the larger initial cavity volume is beneficial to generating a stronger negative pressure gradient in the extrusion process, and the sealing performance is improved.

[0015] 2. The water testing clamp for the outboard motor of the ship is characterized in that: the sealing edge of the water testing clamp is in a "H" shape structure along the axial section of the bellows, and an edge sealing cavity is formed in the sealing edge, and the two side slopes of the "H" shape structure generate a component force when being pressed, the sealing edge generates a radial expansion force when being in contact with the water inlet of the outboard motor, the contact area with the outboard motor is increased, and thus the sealing property is improved, and the edge sealing cavity stores energy when being pressed, and the elastic potential energy stored in the edge sealing cavity compensates the gap through rebound when external pressure fluctuates or the sealing material is slightly deformed due to aging, and thus the connection sealing property with the water inlet of the outboard motor is improved, and falling off is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 It is a whole schematic view of a water testing clamp for a ship outboard engine.

[0018] Figure 2 It is a half sectional view of a water testing clamp for a ship outboard engine.

[0019] Figure 3 It is Figure 2 It is an enlarged view of part A.

[0020] Figure 4 It is a structural schematic view of a clamp rod of the present application.

[0021] Figure 5 It is a structural schematic view of a bellows of the present application.

[0022] Figure 6 It is a half sectional view of a bellows of the present application.

[0023] Figure 7 It is Figure 6 It is an enlarged view of part B.

[0024] Reference signs: 1, three-way fork head; 2, water inlet; 3, elastic hose; 4, vertical head; 5, water outlet; 6, clamp rod; 7, fixing ring; 8, clamp head assembly; 81, bellows; 82, sealing edge; 83, edge sealing cavity; 9, through hole. EMBODIMENTS

[0025] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0026] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, a particular orientation structure and operation, therefore cannot be understood as the limitation to the utility model. In addition, the term "first", "second", "third" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it is necessary to explain, unless otherwise explicitly specified and limited, the term "installation", "connection", "connection" should be broad understanding, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through the intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0028] The utility model is further explained in combination with specific implementation.

[0029] As Figures 1-7As shown, the embodiment provides a water test clamp for outboard motor of ship, which is characterized by comprising a three-way fork head 1, a middle part of the three-way fork head 1 is communicated with a water inlet 2, two ends of the three-way fork head 1 are communicated with elastic hoses 3 respectively, and ends of the elastic hoses 3 are provided with opposite clamp head assemblies 8; the clamp head assembly 8 comprises a hollow corrugated pipe 81, a diameter of the corrugated pipe 81 is 8-10 cm, the corrugated pipe 81 is a rubber hose, corrugations of the corrugated pipe 81 are provided in at least two layers, preferably 3-5 layers, and a wall thickness of the corrugated pipe 81 is 2-4 mm. The corrugated pipe 81 is beneficial to compensate displacement caused by water flow impact in the process of water test through elastic expansion and contraction of axial corrugations. Specifically, in the process of water test, the clamp head assembly 8 and the sealing part of the water inlet of the outboard motor are accompanied by high-pressure water pressure and high-frequency vibration of the outboard motor, the corrugated layers of the corrugated pipe 81 absorb energy through alternating compression-rebound, the corrugated structure of the corrugated pipe 81 can withstand long-term impact of vibration of the outboard motor of the ship by dispersing stress concentration points, avoids resonance of the sealing surface, and avoids disengagement. The hollow structure of the corrugated pipe 81 has a larger internal cavity volume than that of the traditional clamp, and the larger initial cavity volume is beneficial to generate a stronger negative pressure gradient in the extrusion process, thereby improving the sealing performance. Specifically, the hollow structure of the corrugated pipe 81 expands the internal cavity volume by 3-5 times compared with the traditional clamp (such as a rigid shell), when the corrugated pipe 81 is extruded, the axial corrugated layers of the corrugated pipe 81 are elastically deformed, thereby causing the cavity volume to rapidly decrease. According to the ideal gas state equation PV=nRT, under the condition of constant temperature, the volume compression amount is positively correlated with the negative pressure intensity. Experimental data show that when the compression amount of the corrugated pipe 81 reaches 30%, the internal negative pressure can reach-0.08 MPa, which is 40% higher than that of the traditional clamp.

[0030] As shown, Figures 5-7 In the embodiment, a sealing edge 82 is arranged on a side of the corrugated pipe 81 facing the outboard motor, the corrugated pipe 81 and the sealing edge 82 are integrally arranged, and the joint weakness of the traditional split structure is eliminated. The sealing edge 82 has a "herringbone" structure along the axial section of the corrugated pipe 81, and an edge sealing cavity 83 is formed in the sealing edge 82. The two side slopes of the "herringbone" structure generate a component force when being pressed. When the sealing edge 82 contacts the water inlet of the outboard motor, the sealing edge 82 generates a radial expansion force, thereby increasing the contact area with the outboard motor, and improving the sealing performance. The edge sealing cavity 83 stores energy when being pressed, and the elastic potential energy stored in the edge sealing cavity 83 compensates the gap through rebound when the external pressure fluctuates or the sealing material is slightly deformed due to aging, thereby improving the connection sealing performance with the water inlet of the outboard motor, and preventing disengagement. Since the contact surface of the water inlet of the outboard motor is not a plane but a curved surface, the sealing edge 82 of the traditional clamp cannot completely cover it. The elastic property of the corrugated pipe 81 of the utility model and the "herringbone" structure can automatically compensate the sealing error of ±0.5 mm, and realize self-adaptability.

[0031] Technical parameter comparison of the corrugated pipe 81 clamp relative to the traditional clamp:

[0032]

[0033] As Figures 1-4 shown, in this embodiment, the end of the elastic hose 3 is provided with a vertical head 4, the end of the elastic hose 3 is communicated with one end of the vertical head 4, the other end of the vertical head 4 is provided with a water outlet 5, and the water outlet 5 is communicated with the axial through hole 9 of the corrugated pipe 81. A V-shaped clamping rod 6 is arranged on the vertical head 4, the clamping rod 6 is clamped at an angle of 20° to 90°, and the two ends of the clamping rod 6 are respectively provided with a fixing ring 7, the fixing ring 7 is sleeved on the vertical head 4 along the axial direction of the corrugated pipe 81, the material of the fixing ring 7 is 45 steel, the tensile strength is greater than or equal to 600MPa, and the clamping rod 6 provides clamping force for the clamping head assembly 8.

[0034] The working principle of the technical scheme provided by the utility model in use is as follows:

[0035] The staff pries open the clamping rod 6, the fixing ring 7 of the clamping rod 6 is sleeved on the vertical head 4 along the axial direction of the corrugated pipe 81, the clamping rod 6 expands, the two opposite corrugated pipes 81 relatively move away, the sealing edge 82 of the corrugated pipe 81 is aligned with the water injection port of the outboard engine, the staff slowly loosens the force applied to the clamping rod 6 and presses the clamping rod 6 towards the relatively inner side, the axial corrugated layer of the corrugated pipe 81 is elastically deformed, the cavity volume is reduced, a negative pressure gradient is generated in the extrusion process, the sealing edge 82 of the corrugated pipe 81 is tightly sucked to the water injection port of the outboard engine through the negative pressure, the two side slopes of the "herringbone" structure generate a component force when being pressed, when the sealing edge 82 is in contact with the water injection port of the outboard engine, the sealing edge 82 generates a radial expansion force, the contact area with the outboard engine is increased, the edge sealing cavity 83 stores energy when being pressed, when the external pressure fluctuates or the sealing material is slightly deformed due to aging, the elastic potential energy stored in the edge sealing cavity 83 compensates for the gap through rebound, thereby improving the connection sealing performance of the sealing edge 82 and the water injection port of the outboard engine and preventing falling off. The staff connects the water inlet 2 of the three-way fork head 1 to the water supply system, inputs water flow, and the water flow sequentially passes through the three-way fork head 1, the elastic hose 3, the vertical head 4, the water outlet 5 and the corrugated pipe 81, and enters the water injection port of the outboard engine from the corrugated pipe 81, so as to perform cooling water channel cleaning, sealing performance detection and power system grinding on the outboard engine.

[0036] Finally, it should be noted that: the above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. A test clamp for a ship's outboard motor, characterized in that, It includes a three-way fork (1), the middle of the three-way fork (1) is connected to the water inlet (2), the two ends of the three-way fork (1) are respectively connected to the elastic hose (3), and the ends of the elastic hose (3) are provided with opposite clamp assemblies (8). The chuck assembly (8) includes a hollow bellows (81) with a sealing edge (82) on the side of the bellows (81) facing the outboard motor. The sealing edge (82) has a "V" shaped structure along the axial section of the bellows (81), and an edge sealing cavity (83) is formed inside the sealing edge (82).

2. A test clamp for a ship's outboard motor according to claim 1, characterized in that, A vertical connector (4) is provided at the end of the flexible hose (3). The end of the flexible hose (3) is connected to one end of the vertical connector (4). The other end of the vertical connector (4) is provided with an outlet (5). The outlet (5) is connected to the through hole (9) of the corrugated pipe (81).

3. A test clamp for a ship's outboard motor according to claim 2, characterized in that, A V-shaped clamp rod (6) is provided on the vertical connector (4). A fixing ring (7) is provided at both ends of the clamp rod (6). The fixing ring (7) is sleeved on one end of the vertical connector (4) along the axial direction of the bellows (81). The clamp rod (6) is made of 45 steel with a tensile strength ≥600 MPa. The clamp rod (6) provides clamping force to the clamp assembly (8).

4. A test clamp for a ship's outboard motor according to claim 1, characterized in that, The corrugated pipe (81) is a rubber hose, and the corrugations of the corrugated pipe (81) are arranged in at least two layers. The wall thickness of the corrugated pipe (81) is 2 mm to 4 mm.

5. A test clamp for a ship's outboard motor according to claim 1, characterized in that, The bellows (81) and the sealing edge (82) are integrated.

6. A test clamp for a ship's outboard motor according to claim 1, characterized in that, The diameter of the corrugated pipe (81) is 8cm to 10cm.

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