Rotary drum type seawater abrasion rate test equipment

Abstract

The utility model provides rotary drum type seawater abrasion rate test equipment, and belongs to the field of marine coating abrasion rate test research. The test equipment comprises a rotating module and a water tank module, wherein the rotating module comprises a motor, a motor bracket and a rotary drum; an output shaft of the motor is connected with the upper end of the transmission shaft, and the lower end of the transmission shaft is connected with the rotary drum; an output shaft of the motor, the transmission shaft and the rotary drum are coaxially arranged; the water tank module comprises a test water tank which is arranged below the motor support, the upper end of the test water tank is open, and the rotary drum is immersed in the test water tank. The test equipment provided by the utility model can simulate a real environment when a ship travels on the sea, the output shaft of the motor is rigidly connected with the rotary drum, and the structure is stable and reliable; and meanwhile, the device has the characteristics of no restriction of regions, manpower saving, equipment miniaturization and the like.

Description

Technical Field

[0001] The utility model belongs to the field of ship coating abrasion rate test research, and specifically relates to a rotary drum type seawater abrasion rate test device. Background Art

[0002] The Chinese national standard "GB / T31411-2015 Determination of Abrasion Rate of Ship Antifouling Paint" stipulates a test device for measuring ship antifouling coatings through a rotating dynamic simulation device. The test device can adjust the test rotation speed to simulate different sailing speeds of the ship and achieve scouring and abrasion on the sample surface.

[0003] The test devices in the above standards are mainly disc type and drum type. The disc type has less contact surface and smaller resistance, so it can use belt synchronous transmission. The drum type has a whole cylinder as its contact surface. If belt synchronous transmission is used, it will cause greater wear on the belt. As the test cycle is longer, the use of belt transmission is unreliable. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide a rotary drum type seawater abrasion rate test device, which can simulate the real environment of a ship sailing at sea, and the output shaft of the motor and the rotary drum are rigidly connected, and the structure is stable and reliable.

[0005] The utility model is realized by the following technical solutions:

[0006] A rotary drum type seawater abrasion rate test device comprises a rotating module and a water tank module, wherein the rotating module comprises a motor, a motor bracket and a rotary drum; the motor is mounted on the motor bracket, the output shaft of the motor is connected to the upper end of the transmission shaft, and the lower end of the transmission shaft is connected to the rotary drum;

[0007] The output shaft, transmission shaft and drum of the motor are arranged coaxially;

[0008] The water tank module comprises a test water tank, which is arranged below the motor bracket and has an opening at the upper end.

[0009] Preferably, the motor bracket comprises a first bracket;

[0010] The first bracket is L-shaped and includes a first horizontal frame and a first vertical frame, the first horizontal frame is arranged horizontally, and the first vertical frame is arranged vertically;

[0011] The first bracket is provided with a second bracket and a third bracket, both of which are L-shaped;

[0012] The second bracket includes a second horizontal frame and a second vertical frame, the second horizontal frame is horizontally arranged, and one end of the second horizontal frame is connected to the inner side of the first vertical frame, and the second vertical frame is vertically arranged, and the lower end of the second vertical frame is connected to the upper surface of the first horizontal frame;

[0013] The third bracket includes a third horizontal frame and a third vertical frame. The third horizontal frame is horizontally arranged and one end is connected to the inner side of the first vertical frame. The third vertical frame is vertically arranged and the lower end is connected to the upper surface of the second horizontal frame.

[0014] Preferably, reinforcing ribs are respectively provided on the front and rear sides of the first bracket; one end of each reinforcing rib is connected to the first horizontal frame, and the other end is connected to the first vertical frame.

[0015] Preferably, the motor is mounted on the third vertical frame;

[0016] Coaxial bearing seats are respectively installed on the second horizontal frame and the first horizontal frame, and a bearing is installed in each bearing seat;

[0017] The upper end of the transmission shaft passes through the bearings on the first horizontal frame and the second horizontal frame in sequence and is connected to the output shaft of the motor through a coupling.

[0018] Preferably, the drum is in a cylindrical structure, and the cylindrical surface of the drum is provided with slots, which are distributed along the outer circumference of the drum.

[0019] Preferably, the upper and lower ends of the card slot are open, and the cross-sections of the left and right ends are U-shaped, with both sides of the U-shape bending toward the inside of the card slot.

[0020] Preferably, the water tank module further comprises a sealing cover, which is connected below the motor bracket and cooperates with an opening at the upper end of the test water tank.

[0021] Preferably, the test equipment further comprises a lifting module;

[0022] The lifting module includes a lifting motor, a guide rail and a guide rail bracket;

[0023] The guide rail is arranged on the guide rail bracket, and the upper end of the guide rail is installed with a lifting motor;

[0024] The lifting motor drives the motor bracket to move up and down along the guide rail.

[0025] Preferably, the test equipment further comprises a water temperature regulating module;

[0026] The water temperature regulating module comprises a heating pipe arranged in the test water tank, and a water circulation system and a refrigeration system communicated with the test water tank.

[0027] Preferably, a heat-insulating layer is provided in the test water tank.

[0028] Compared with the prior art, the beneficial effects of the utility model are:

[0029] In the utility model, the output shaft of the motor is rigidly connected to the drum, which can achieve a 1:1 transmission efficiency; the sample can be installed by directly inserting it into the card slot without the need for re-fixing; and a forced refrigeration system is installed in the original circulating water pipeline to simulate the requirements of different water temperatures in different sea areas. The drum-type seawater abrasion rate test equipment provided by the utility model can truly test the effect of seawater abrasion, and at the same time has the characteristics of not being restricted by region, saving manpower, miniaturization of equipment, and convenient sample installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the overall structure diagram of the test equipment of the utility model;

[0031] Figure 2 This is a structural diagram of the sample installed on the drum in the utility model;

[0032] Figure 3 for Figure 2 A partial enlarged view of

[0033] Figure 4 This is an assembly structure diagram of the motor and the motor bracket in the utility model;

[0034] Figure 5 for Figure 4 The main view;

[0035] Figure 6 for Figure 4 Side view of

[0036] Figure 7 for Figure 4 A top view of

[0037] 1 lifting motor, 2 guide rail, 3 guide rail bracket, 4 protective cover, 5 motor, 6 motor bracket, 7 transmission shaft, 8 bearing seat, 9 sealing cover, 10 sealing strip, 11 drum, 12 insulation layer, 13 heating pipe, 14 condenser, 15 controller, 16 refrigeration unit, 17 refrigeration coil, 18 circulating water pump, 19 suction pipe, 20 outlet pipe, 21 return pipe, 22 refrigeration pipeline, 23 temperature sensor, 24 test water tank, 25 refrigeration water tank, 26 sample; 61 first bracket, 62 third bracket, 63 reinforcement rib, 64 support rod, 65 second bracket; 111 slot, 112 metal hoop. DETAILED DESCRIPTION

[0038] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0039] The utility model provides a rotary drum type seawater abrasion rate test device, which is a temperature and speed abrasion rate control device. The device uses a high-power motor to drive the drum to rotate at high speed in the water tank, and the sample is installed on the drum to achieve the abrasion effect generated by the ship and the seawater when it is sailing.

[0040] like Figure 1 As shown, the rotary drum seawater abrasion rate test equipment provided by the utility model includes: a rotating module, a water tank module, a water temperature regulating module, a lifting module and a control module. The rotating module is used to drive the sample to rotate at high speed to simulate the speed of the ship; the water tank module is used to hold the test water (artificially proportioned seawater); the water temperature regulating module is used to adjust the temperature of the seawater in the water tank module; the lifting module is used to lift or lower the rotating module as a whole, which is convenient for taking and testing samples; the control module is used to control the rotating module, the water temperature regulating module and the lifting module. Casters are installed at the bottom of the equipment for easy movement without being restricted by the site.

[0041] The rotating module includes a motor 5, a motor bracket 6 and a rotating drum 11. The motor 5 is a high-power, high-torque variable frequency motor; the motor 5 is mounted on the motor bracket 6, the output shaft of the motor 5 is connected to the upper end of the transmission shaft 7, and the lower end of the transmission shaft 7 is connected to the rotating drum 11; the output shaft of the motor 5, the transmission shaft 7, and the rotating drum 11 are coaxially arranged, and the axes of the three are perpendicular to the horizontal plane.

[0042] like Figures 4 to 7 As shown, the motor bracket 6 includes a first bracket 61, which is L-shaped and includes a first horizontal frame and a first vertical frame, which are vertically connected to form an L-shape, the first horizontal frame is horizontally arranged, and the first vertical frame is vertically arranged. A plurality of support rods 64 are welded in the first horizontal frame and the first vertical frame. Figure 4 As shown, a second bracket 65 and a third bracket 62, both of which are L-shaped, are arranged on the first bracket 61. The second bracket 65 includes a second horizontal frame and a second vertical frame, which are vertically connected to form an L-shape. The second horizontal frame is arranged horizontally, and one end is connected to the inner side of the first vertical frame. The second vertical frame is arranged vertically, and the lower end is connected to the upper surface of the first horizontal frame. The third bracket 62 includes a third horizontal frame and a third vertical frame, which are vertically connected to form an L-shape. The third horizontal frame is arranged horizontally, and one end is connected to the inner side of the first vertical frame. The third vertical frame is arranged vertically, and the lower end is connected to the upper surface of the second horizontal frame. Furthermore, reinforcing ribs 63 are respectively arranged on the front and rear sides of the first bracket 61. One end of each reinforcing rib 63 is connected to the first horizontal frame, and the other end is connected to the first vertical frame. The specific connection position may be the end of the first horizontal frame and the first vertical frame (such as Figure 1 As shown), it can also be the middle of the first horizontal frame and the first vertical frame (as shown Figure 4 shown).

[0043] The base of the motor 5 is mounted on the third vertical frame by bolts, and the lower end surface of the motor 5 is in contact with the second horizontal frame, which can also prevent the motor 5 from shaking. Coaxial bearing seats 8 are respectively installed on the second horizontal frame and the first horizontal frame, and a bearing is installed in each bearing seat; the bearing seat 8 uses an existing high-speed, anti-corrosion bearing seat, such as Figure 1 As shown; the upper end of the transmission shaft 7 passes through the two bearings on the first horizontal frame and the second horizontal frame in turn and is connected to the output shaft of the motor 5 through a coupling, that is, half of the coupling is connected to the output shaft of the motor, and the other half is installed on the upper end of the transmission shaft 7, and the coupling is combined into one by bolts; the two bearing seats 8 are used to fix the transmission shaft 7 so that it will not swing. Figure 1 As shown, a protective cover 4 is provided on the outside of the motor 5 , and the protective cover 4 is mounted on the first bracket 61 .

[0044] like Figure 2 and Figure 3 As shown, the drum 11 is a cylindrical structure, and a plurality of slots 111 are arranged on the cylindrical surface of the drum 11. The plurality of slots 111 are evenly distributed vertically along the outer circumference of the drum 11, and are fixed by a metal hoop 112 arranged coaxially with the drum 11. The upper and lower ends of the slot 111 are open, and the cross-sections of the left and right ends are U-shaped, and the two sides of the U-shape are bent toward the inner side of the slot 111 (the side where the center line of the U-shape is located). The sample 26 can be inserted from the upper and lower ends of the slot 111 without being fixed again. The metal hoop 112 is made of 3mm round steel. When the sample is placed in the slot 111, there will be a gap between the metal hoop 112, so the sample will not be blocked from contacting with water, thereby not affecting the test; the metal hoop 112 can also prevent the slot 111 from being deformed due to centrifugal force. A flange is installed on the upper end surface of the drum 11, one end of the flange is connected to the lower end of the transmission shaft 7, and the other end is bolted to the drum 11.

[0045] During the test, the number of samples can be placed as needed, and the samples can be placed on the periphery of the entire cylinder. According to the settings in GB / T31411-2015, the existing structure requires screws to fix the samples, and only one sample can be installed on one surface, and it must be the same size as the plane. The utility model adopts a card slot, and a card slot can hold multiple samples. It only needs the width of the sample to be equal to the width of the card slot. The height of the sample can be designed according to needs, which is conducive to the miniaturization of the structure, and multiple groups of samples can be tested at the same time; at the same time, the card slot can reduce the cumbersome steps when installing the sample, and the sample will not fall off due to loose screws.

[0046] In the embodiment provided by the utility model, sample 26 adopts the test sample (type II sample) for the rotating drum dynamic simulation device in GB / T31411-2015, the sample material is 3240 type epoxy fiberglass or other composite materials, and the sample size is 100mm×60mm×2mm. The middle position is a 10mm wide chlorinated rubber covering coating along the length direction, and the two sides are the antifouling coating to be tested.

[0047] The utility model can also realize a disc-type test device, which only requires replacing the rotating drum with a rotating disk, that is, connecting the rotating disk to the lower end of the transmission shaft, so that both the rotating drum dynamic simulation test and the disc dynamic simulation test can be satisfied.

[0048] The water tank module includes a test water tank 24 and a sealing cover 9. The sealing cover 9 is connected to the bottom of the motor bracket 6. The end of the transmission shaft 7 passes through the sealing cover 9 and is connected to the drum 11. The test water tank 24 is arranged under the motor bracket 6, and a sealing strip 10 is arranged at the opening of its upper end, which is used in conjunction with the sealing cover 9.

[0049] The water temperature regulating module includes a heating pipe 23 disposed in a test water tank 24 , and a water circulation system and a refrigeration system communicated with the test water tank 24 .

[0050] The test water tank 24 is provided with a heat preservation layer 12, and a heating pipe 13 and a temperature sensor 23 located above the heating pipe 13 are installed on the side wall (near the bottom) of the test water tank 24. There are gaps between the temperature sensor 23 and the heating pipe 13, and between the heating pipe 13 and the heat preservation layer 12 at the bottom of the test water tank 24. The test water tank 24 contains test water. A water suction pipe 19 is provided in the heat preservation layer 12 at the bottom of the test water tank 24. One end of the water suction pipe 19 is connected to the inside of the test water tank 24, and the other end is connected to the circulating water pump 18, the outlet pipe 20, the refrigeration water tank 25, and the return pipe 21 outside the test water tank 24 in sequence. The other end of the return pipe 21 is connected to the top of the side wall of the test water tank 24 to form a circulation loop. The water temperature adjustment module also includes a condenser 14 and a refrigeration unit 16. The outlet of the condenser 14 is connected to one end of a refrigeration coil 17. The other end of the refrigeration coil 17 passes through the inner cavity of the refrigeration water tank 25 and is connected to the inlet of the refrigeration unit 16. The outlet of the refrigeration unit 16 is connected to a refrigeration pipeline 22. The other end of the refrigeration pipeline 22 is connected to the inlet of the condenser 14, thereby forming a refrigeration circuit. The refrigeration coil 17 passes through the inside of the refrigeration water tank 25 to cool the test water.

[0051] The water circulation system includes a circulating water pump 18, a water suction pipe 19, a water outlet pipe 20, a water return pipe 21 and a refrigeration water tank 25. The circulating water pump 18 provides power for the test water in the circulation loop and is used to circulate the seawater in the test water tank 24 to make its temperature uniform.

[0052] The refrigeration system includes a condenser 14, a refrigeration unit 16, a refrigeration coil 17 and a refrigeration pipeline 22. The refrigeration principle is to refrigerate through the continuous changes of liquefaction and vaporization of the refrigerant in the system. After the refrigerant is liquefied in the condenser 14, it flows through the refrigeration coil 17. The test water exchanges heat by contacting with the refrigeration coil 17. The refrigerant absorbs heat and vaporizes and enters the refrigeration unit 16. After being compressed by the compressor, it re-enters the condenser 14 and liquefies. The refrigeration system uses forced refrigeration to reduce the temperature rise generated when the drum is running, ensuring that the water temperature is always stable within the set temperature deviation range.

[0053] The lifting module includes a lifting motor 1, a guide rail 2 and a guide rail bracket 3. The guide rail 2 is vertically arranged on the guide rail bracket 3, and the guide rail bracket 3 is installed on the outer box of the water temperature regulation module (this is to save space. Optionally, the guide rail bracket 3 can also be arranged on other structures that can play a supporting role). The lifting motor 1 is installed on the upper end of the guide rail 2. The lifting motor drives the motor bracket 6 to move up and down along the guide rail 2. At the same time, the motor bracket 6 drives the protective cover 4 to move up and down along the guide rail 2.

[0054] Preferably, the lifting motor 1 is a stepping motor, the guide rail 2 can be an existing linear rail and a matching slider, and the side of the first vertical frame ( Figure 1 The right side of the motor bracket 6 is connected to the slider, and the stepper motor drives the slider to move. The guide rail 2 can also use the existing screw nut type guide rail. The side of the first vertical frame ( Figure 1 The right side of the middle motor bracket 6) is connected to the nut on the guide rail 2; the stepper motor drives the lead screw to rotate, thereby driving the rotating module to move up and down together with the nut.

[0055] The control module includes a temperature sensor 23 arranged in the test water tank 24, a speed sensor arranged on the transmission shaft 7, and a controller 15; the controller 15 is respectively communicated with the speed sensor and the temperature sensor 23, and is respectively communicated with the motor 5, the heating tube 13 and the refrigeration system.

[0056] The speed sensor detects the real-time speed and feeds it back to the controller 15, and the controller 15 increases or decreases the speed by adjusting the motor 5 (inverter). The temperature sensor 23 in the test water tank 24 detects the real-time water temperature and feeds it back to the controller 15. When the detected temperature is lower than the set value, the heating tube 13 is started to heat and the water temperature rises; when the detected temperature is higher than the set value, the refrigeration system is started to work and the water temperature drops.

[0057] like Figure 1As shown, the test water tank 24 is arranged below the sealing cover 9, and the lifting motor 1 and the guide rail 2 can move the drum 11 up and down, and the sealing cover 9 cooperates with the upper opening of the test water tank 24. When the drum 11 moves upward out of the test water tank 24, the sample 26 is installed on the drum 11, and then the drum 11 is moved downward into the test water tank 24, and lowered until the drum 11 is completely immersed in the water. The controller 15 controls the rotation speed (i.e., the speed) of the drum 11 to meet the test requirements. The seawater is processed by the heating pipe 13, the condenser 14, the refrigeration unit 16, the refrigeration coil 17 and the circulating water pump 18 through the circulation loop, and the controller 15 controls the water temperature to reach the temperature required for the test. Among them, the heating pipe 13, the condenser 14, the refrigeration unit 16, and the refrigeration coil 17 use the cold and hot ratio to control the temperature so that the temperature remains stable and accurate.

[0058] The utility model provides a rotary drum seawater abrasion rate test device, in which the sample is installed on the outer periphery of the rotary drum and immersed in water. When the rotary drum rotates, the sample surface will produce friction with the seawater, which can truly simulate the effect of seawater abrasion. The device can also control the temperature of the test water. When conducting research on the abrasion rate test of ship coatings, it can better compare the abrasion of coatings or other materials under the same environment by simulating the corresponding speed and water temperature; the water temperature and speed of the abrasion test can be controlled at the same time, and the test will not be stopped or terminated due to the influence of environmental factors, saving test time and energy consumption.

[0059] The rotary drum seawater abrasion rate test equipment provided by the utility model is of box-type, and the space requirement is relatively small, so it is suitable for installation in various test laboratories; casters are arranged at the bottom of the equipment for easy movement; the rotating module can be moved up and down, so that the test personnel can observe the test status at any time; the test water can be artificially mixed seawater, and the wastewater can also be discharged after purification, so as not to affect the environment; there is no need to regularly clean the seaweed and impurities adsorbed by the sample when immersed in the water, and the test temperature will not be affected by the weather, and the test accuracy will not be affected by the impact of waves.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0062] The above technical solution is only one implementation method of the utility model. For those skilled in the art, it is easy to make various types of improvements or modifications based on the principles disclosed in the utility model, and it is not limited to the technical solution described in the above specific embodiments of the utility model. Therefore, the above description is only preferred and does not have a restrictive meaning.

Claims

1. A rotary drum type seawater abrasion rate test device, comprising a rotating module and a water tank module, characterized in that: The rotating module includes a motor, a motor bracket and a rotating drum; the motor is mounted on the motor bracket, the output shaft of the motor is connected to the upper end of the transmission shaft, and the lower end of the transmission shaft is connected to the rotating drum; The output shaft, transmission shaft and drum of the motor are arranged coaxially; The water tank module comprises a test water tank, which is arranged below the motor bracket and has an opening at the upper end.

2. The rotary drum type seawater abrasion rate test equipment according to claim 1, characterized in that: The motor bracket includes a first bracket; The first bracket is L-shaped and includes a first horizontal frame and a first vertical frame, the first horizontal frame is arranged horizontally, and the first vertical frame is arranged vertically; The first bracket is provided with a second bracket and a third bracket, both of which are L-shaped; The second bracket includes a second horizontal frame and a second vertical frame, the second horizontal frame is horizontally arranged, and one end of the second horizontal frame is connected to the inner side of the first vertical frame, and the second vertical frame is vertically arranged, and the lower end of the second vertical frame is connected to the upper surface of the first horizontal frame; The third bracket includes a third horizontal frame and a third vertical frame. The third horizontal frame is horizontally arranged and one end is connected to the inner side of the first vertical frame. The third vertical frame is vertically arranged and the lower end is connected to the upper surface of the second horizontal frame.

3. The rotary drum type seawater abrasion rate test equipment according to claim 2, characterized in that: Reinforcement ribs are respectively arranged on the front and rear sides of the first bracket; one end of each reinforcement rib is connected to the first horizontal frame, and the other end is connected to the first vertical frame.

4. The rotary drum type seawater abrasion rate test equipment according to claim 2, characterized in that: The motor is mounted on the third vertical frame; Coaxial bearing seats are respectively installed on the second horizontal frame and the first horizontal frame, and a bearing is installed in each bearing seat; The upper end of the transmission shaft passes through the bearings on the first horizontal frame and the second horizontal frame in sequence and is connected to the output shaft of the motor through a coupling.

5. The rotary drum type seawater abrasion rate test equipment according to claim 1, characterized in that: The drum is in a cylindrical structure, and slots are arranged on the cylindrical surface of the drum, and the slots are distributed along the outer circumference of the drum.

6. The rotary drum type seawater abrasion rate test equipment according to claim 5, characterized in that: The upper and lower ends of the card slot are open, and the cross-sections of the left and right ends are U-shaped, with the two sides of the U-shaped being bent toward the inner side of the card slot.

7. The rotary drum type seawater abrasion rate test equipment according to claim 1, characterized in that: The water tank module also includes a sealing cover, which is connected below the motor bracket and matches with the opening at the upper end of the test water tank.

8. The rotary drum type seawater abrasion rate test equipment according to claim 1, characterized in that: The test equipment also includes a lifting module; The lifting module includes a lifting motor, a guide rail and a guide rail bracket; The guide rail is arranged on the guide rail bracket, and the upper end of the guide rail is installed with a lifting motor; The lifting motor drives the motor bracket to move up and down along the guide rail.

9. The rotary drum type seawater abrasion rate test equipment according to any one of claims 1 to 8, characterized in that: The test equipment also includes a water temperature adjustment module; The water temperature regulating module comprises a heating pipe arranged in the test water tank, and a water circulation system and a refrigeration system communicated with the test water tank.

10. The rotary drum type seawater abrasion rate test equipment according to claim 1, characterized in that: There is a thermal insulation layer inside the test water tank.

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