Lifting test device capable of self-adapting to water depth and use method

Abstract

The invention relates to a lifting test device capable of self-adapting to water depth and a use method. The lifting test device comprises a base and a top cover, one end of the shear type lifting frame is connected with the base and the top cover through hinges, the other end of the shear type lifting frame is connected with the nylon sliding blocks, and the nylon sliding blocks are arranged in the base and the top cover in a sliding mode respectively. The hydraulic pressure expansion piece is provided with an expansion piece rod which is connected with the nylon sliding block. Main testing equipment and auxiliary testing equipment are arranged on the top cover, the nylon sliding block is driven to move through the expansion piece rod, and then the shear type lifting frame is driven to ascend and descend. The device is arranged on the lifting platform, when the lifting platform is located on the water surface, the device is in a folded state, test equipment is convenient to replace and maintain, when the lifting platform sinks, the device is automatically unfolded to adapt to different water depths, when the lifting platform ascends, the device is automatically folded, and the device does not need to be manually controlled and adjusted in the whole test process; and the test efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater launch test, and in particular to a lifting and lowering test device capable of adapting to water depth and a use method thereof. Background Art

[0002] The underwater launch test of the navigation body often requires the use of an underwater lifting platform. The navigation body and the launch device are fixed on the underwater lifting platform, and the platform sinks to the set water depth for launch. The test process is tested through various test equipment on the platform and the navigation body.

[0003] The test process requires monitoring of the underwater optical measurement and flow field environment of the navigation body, and a fixed test frame is usually arranged on the platform for testing. Due to the need to adapt to different water depth tests, the fixed test frame is generally high, which is not convenient for the operation and maintenance of the test equipment. When the water depth is too deep, due to limited pool space, a bracket that is too high may not be arranged. In addition, when the test water depth is different, the test frame equipment often needs to be adjusted to adapt to the water depth. Ordinary hydraulic or electric lifting devices often require complex lines and pipelines, which are inconvenient to use in underwater environments.

[0004] To this end, we propose a lifting and lowering test device that can adapt to water depth and a method of use. Summary of the invention

[0005] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a lifting test device that can adapt to water depth and a method of use. The device is installed on a lifting platform. When the lifting platform is on the water surface, the device is in a folded state, which is convenient for replacing test equipment and maintenance. When the lifting platform sinks, the water pressure drive device automatically unfolds to adapt to different water depths. When the lifting platform rises, the device automatically folds. The device does not require manual control and adjustment during the entire test process, which can greatly improve the test efficiency.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A lifting and lowering test device capable of self-adapting to water depth, comprising:

[0008] Base and top cover;

[0009] A scissor lift frame, one end of which is connected to the base and the top cover through a hinge, and the other end of which is connected to a plurality of nylon sliders, which are slidably arranged in the base and the top cover respectively;

[0010] A hydraulic expander is provided with an expander rod, and the expander rod is connected with a nylon slider;

[0011] Among them, the main test equipment and auxiliary test equipment are arranged on the top cover, which drives the nylon slider to move through the telescopic rod, and then drives the scissor lift frame to rise and fall.

[0012] It is further characterized by:

[0013] One end of the bottom of the scissor-type lifting frame is connected to the base through a hinge, and one end of the top of the scissor-type lifting frame is connected to the top cover through a hinge.

[0014] The other end of the bottom of the scissor-type lifting frame is connected to the nylon slider, and the other end of the top of the scissor-type lifting frame is connected to the nylon slider.

[0015] Water pressure expansion joints are installed on both sides of the base and the top cover.

[0016] The hydraulic expander comprises an expander cylinder, and the expander rod is arranged in the expander cylinder.

[0017] A first limiting member and a second limiting member are arranged in the telescopic tube, one end of the telescopic rod extends out of the telescopic tube, and the other end of the telescopic rod is located between the first limiting member and the second limiting member.

[0018] The telescopic device tube is provided with a water permeable hole at one end where the telescopic device rod extends out, and the water permeable hole is located in the area outside the first limiting member and the second limiting member.

[0019] Compressed gas is arranged between the end of the telescopic device tube away from the water permeable hole and the telescopic device rod.

[0020] The present invention also discloses a method for using a lifting and lowering testing device capable of self-adapting to water depth, comprising the following steps:

[0021] Step 1: The hydraulic retractor is in a normal pressure state, and the compressed gas pushes the retractor rod against the second limit. At this time, the scissor lift is in a retracted state, and the top cover is in the lowest position;

[0022] Step 2: The hydraulic expander gradually moves downward in the water, and water enters the expander tube through the water-permeable hole. The water pressure gradually increases, and the water pressure pushes the expander rod to move toward the limit position 1. The expander rod drives the nylon slider to slide, and the nylon slider drives the scissor lift frame to rise, and the scissor lift frame drives the top cover to rise; the maximum stroke is when the expander rod is against the limit position 1;

[0023] Step 3: The hydraulic expander gradually moves upward in the water, the water in the expander tube flows out through the water permeable hole, the water pressure gradually decreases, and the compressed gas pushes the expander rod to move toward the second limit. The expander rod drives the scissor lift frame to descend through the nylon slider, and the scissor lift frame drives the top cover to descend.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention has a compact and reasonable structure and is easy to operate. Through a simple mechanism, it utilizes the water pressure changes caused by changes in the working environment to achieve automatic lifting of the test equipment, adapts to the water depth, avoids manual adjustment, and improves the test efficiency. When the lifting platform is on the water surface, the device is in a folded state, which is convenient for replacing the test equipment and maintenance. When the lifting platform sinks, the water pressure drive device automatically unfolds to adapt to different water depths. When the lifting platform rises, the device automatically folds. The device does not require manual control and adjustment during the entire test process, which can greatly improve the test efficiency.

[0026] At the same time, the present invention also has the following advantages:

[0027] (1) When the hydraulic expansion joint is in a normal pressure environment, the compressed gas pushes the expansion joint rod to move toward the second limit position until the expansion joint rod reaches the second limit position.

[0028] (2) When the hydraulic expander moves downward in the water, the water pressure gradually increases. Driven by the external pressure, water enters the expander tube from the water permeable hole. The water pressure pushes the expander rod to move toward the limit one. When the water pressure exceeds a certain value, the expander rod reaches the limit one. This is the maximum stroke and the top cover reaches the maximum height.

[0029] (3) When the hydraulic expander moves upward in the water, the water pressure gradually decreases, and the compressed gas pushes the expander rod to move toward the second limiter, and the expander rod moves outside the expander tube. The expander rod drives the nylon slider to move, and then drives the scissor lift frame to descend. When the hydraulic expander is out of the water, the expander rod presses against the second limiter, and the top cover returns to its initial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention.

[0031] Figure 2 It is a schematic diagram of the hydraulic expansion joint of the present invention.

[0032] Figure 3 It is a cross-sectional schematic diagram of the hydraulic expansion joint of the present invention.

[0033] Figure 4 This is a schematic diagram of the three lifting device units of the present invention before they are assembled and lifted.

[0034] Figure 5 It is a schematic diagram of the three lifting device units of the present invention after being raised together.

[0035] Among them: 1. Base; 2. Scissor lift; 3. Top cover; 4. Water pressure expansion joint; 5. Nylon slider; 6. Main test equipment; 7. Auxiliary test equipment; 4-1. Expansion joint cylinder; 4-2. Expansion joint rod; 4-3. Compressed gas; 4-4. Water permeable hole; 4-5. Limit one; 4-6. Limit two. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0037] like Figure 1-Figure 3 As shown, a lifting test device capable of self-adapting to water depth includes a base 1, a scissor-type lifting frame 2, a top cover 3, a hydraulic expansion joint 4, a nylon slider 5, a main test device 6 and an auxiliary test device 7. The scissor-type lifting frame 2 is arranged between the base 1 and the top cover 3, the base 1 is arranged on the lifting platform, and the base 1 moves together with the lifting platform.

[0038] One end of the bottom of the scissor lift 2 is connected to the base 1 through a hinge, and the other end of the bottom of the scissor lift 2 is connected to a nylon slider 5, which can slide along the base 1; one end of the top of the scissor lift 2 is connected to the top cover 3 through a hinge, and the other end of the top of the scissor lift 2 is connected to a nylon slider 5, which can slide along the top cover 3; the sliding of the nylon slider 5 drives the lifting of the scissor lift 2, and then drives the lifting of the top cover 3. Water pressure expansion joints 4 are installed on both sides of the base 1 and the top cover 3. When the base 1 sinks into the water, the water pressure expansion joints 4 will pull the nylon slider 5 to move due to the water pressure drive, and the top cover 3 will be lifted through the lifting frame 2. Since the water pressure is different at different depths, the stroke of the water pressure expansion joints 4 is different, and the height of the top cover is changed accordingly to meet the requirements of different water depths.

[0039] The hydraulic expansion joint 4 includes an expansion joint cylinder 4-1, an expansion joint rod 4-2 is arranged in the expansion joint cylinder 4-1, a limiter 1 4-5 and a limiter 2 4-6 are arranged in the expansion joint cylinder 4-1, one end of the expansion joint rod 4-2 extends out of the expansion joint cylinder 4-1, and the other end of the expansion joint rod 4-2 is between the limiter 1 4-5 and the limiter 2 4-6. The expansion joint cylinder 4-1 is provided with a water-permeable hole 4-4 at the end where the expansion joint rod 4-2 extends out. The water-permeable hole 4-4 is in the area outside the limiter 1 4-5 and the limiter 2 4-6. Compressed gas 4-3 is arranged between the end of the expansion joint cylinder 4-1 away from the water-permeable hole 4-4 and the expansion joint rod 4-2.

[0040] When the hydraulic expander 4 is in a normal pressure environment, the compressed gas 4-3 pushes the expander rod 4-2 to move toward the second limit 4-6 until the expander rod 4-2 reaches the second limit 4-6; when the hydraulic expander 4 moves downward in the water, the water pressure gradually increases, and the water enters the expander tube 4-1 from the water permeable hole 4-4 under the drive of the external pressure, and the water pressure pushes the expander rod 4-2 to move toward the limit one 4-5. When the water pressure exceeds a certain value, the expander rod 4-2 reaches the limit one 4-5. This is the maximum stroke, and the top cover 3 reaches the maximum height. When the hydraulic expander 4 moves upward in the water, the water pressure gradually decreases, and the compressed gas 4-3 pushes the expander rod 4-2 to move toward the side of the second limit 4-6. The expander rod 4-2 moves outside the expander tube 4-1, and the expander rod 4-2 drives the nylon slider 5 to move, thereby driving the scissor-type lifting frame 2 to descend. When the hydraulic expander 4 is out of water, the expander rod 4-2 presses against the second limit 4-6, and the top cover 3 returns to its initial position.

[0041] A main test device 6 and an auxiliary test device 7 are provided on one side of the mandrel 3, which can be combined through a plurality of lifting devices during a specific test to cover the full water depth test requirements.

[0042] Through the combination of the hydraulic expansion joint 4 and the scissor-type lifting frame 2, the structure is simple, and the water pressure change caused by the change of the working environment is utilized to realize the automatic lifting of the test equipment, adapt the water depth, avoid manual adjustment, and improve the test efficiency.

[0043] Example 1

[0044] like Figure 4 , Figure 5 As shown, three lifting device units are combined to meet the test of model out of the tube, in water and near the water surface. The base 1 of the uppermost lifting device unit is arranged on the top cover 3 of the middle lifting device unit, and the base 1 of the middle lifting device unit is arranged on the top cover 3 of the lowermost lifting device unit.

[0045] The present invention also discloses a method for using a lifting and lowering testing device capable of self-adapting to water depth, comprising the following steps:

[0046] Step 1: The hydraulic expander 4 is in a normal pressure state, and the compressed gas 4-3 pushes the expander rod 4-2 against the second limit 4-6. At this time, the scissor lift 2 is in a retracted state, and the top cover 3 is in the lowest position;

[0047] Step 2: The hydraulic expander 4 gradually moves downward in the water, and water enters the expander tube 4-1 through the water-permeable hole 4-4. The water pressure gradually increases, and the water pressure pushes the expander rod 4-2 to move toward the limit position 1 4-5. The expander rod 4-2 drives the nylon slider 5 to slide, and the nylon slider 5 drives the scissor lift 2 to rise, and the scissor lift 2 drives the top cover 3 to rise; the maximum stroke is when the expander rod 4-2 is against the limit position 1 4-5;

[0048] Step 3: The hydraulic expander 4 gradually moves upward in the water, the water in the expander tube 4-1 flows out through the water permeable hole 4-4, the water pressure gradually decreases, and the compressed gas 4-3 pushes the expander rod 4-2 to move toward the second limit 4-6. The expander rod 4-2 drives the scissor-type lifting frame 2 to descend through the nylon slider 5, and the scissor-type lifting frame 2 drives the top cover 3 to descend.

[0049] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A lifting and lowering test device capable of self-adapting to water depth, characterized in that: include: A base (1) and a top cover (3); A scissor-type lifting frame (2), one end of the scissor-type lifting frame (2) is connected to the base (1) and the top cover (3) through a hinge, and the other end of the scissor-type lifting frame (2) is connected to a plurality of nylon sliders (5), and the plurality of nylon sliders (5) are slidably arranged in the base (1) and the top cover (3) respectively; A hydraulic expander (4) is provided with an expander rod (4-2), and the expander rod (4-2) is connected to a nylon slider (5); The top cover (3) is provided with a main test device (6) and an auxiliary test device (7), which drives the nylon slider (5) to move through the telescopic rod (4-2), thereby driving the scissor lift frame (2) to move up and down.

2. A lifting and lowering test device capable of self-adapting to water depth as claimed in claim 1, characterized in that: One end of the bottom of the scissor-type lifting frame (2) is connected to the base (1) through a hinge, and one end of the top of the scissor-type lifting frame (2) is connected to the top cover (3) through a hinge.

3. A lifting and lowering test device capable of self-adapting to water depth as claimed in claim 2, characterized in that: The other end of the bottom of the scissor-type lifting frame (2) is connected to the nylon slider (5), and the other end of the top of the scissor-type lifting frame (2) is connected to the nylon slider (5).

4. The self-adaptive water depth lifting and testing device according to claim 1, characterized in that: Water pressure expansion joints (4) are installed on both sides of the base (1) and the top cover (3).

5. A lifting and lowering test device capable of self-adapting to water depth as claimed in claim 4, characterized in that: The hydraulic expander (4) comprises an expander cylinder (4-1), and the expander rod (4-2) is arranged in the expander cylinder (4-1).

6. A lifting and lowering test device capable of self-adapting to water depth as claimed in claim 5, characterized in that: A first limiting member (4-5) and a second limiting member (4-6) are arranged in the telescopic tube (4-1); one end of the telescopic rod (4-2) extends out of the telescopic tube (4-1); and the other end of the telescopic rod (4-2) is located between the first limiting member (4-5) and the second limiting member (4-6).

7. A lifting and lowering test device capable of self-adapting to water depth as claimed in claim 6, characterized in that: The telescopic tube (4-1) is provided with a water permeable hole (4-4) at one end extending from the telescopic rod (4-2), and the water permeable hole (4-4) is located in an area outside the first limiting member (4-5) and the second limiting member (4-6).

8. The self-adaptive water depth lifting and lowering testing device according to claim 7, characterized in that: Compressed gas (4-3) is arranged between the end of the telescopic device tube (4-1) away from the water permeable hole (4-4) and the telescopic device rod (4-2).

9. A method for using a lifting test device capable of self-adapting to water depth, characterized in that: The steps include: Step 1: The hydraulic expander (4) is in a normal pressure state, and the compressed gas (4-3) pushes the expander rod (4-2) against the second limiter (4-6). At this time, the scissor lift (2) is in a retracted state, and the top cover (3) is in the lowest position; Step 2: The hydraulic expander (4) gradually moves downward in the water, water enters the expander tube (4-1) through the water-permeable hole (4-4), the water pressure gradually increases, the water pressure pushes the expander rod (4-2) to move toward the limit position 1 (4-5), the expander rod (4-2) drives the nylon slider (5) to slide, the nylon slider (5) drives the scissor-type lifting frame (2) to rise, and the scissor-type lifting frame (2) drives the top cover (3) to rise; the maximum stroke is when the expander rod (4-2) abuts against the limit position 1 (4-5); Step 3: The hydraulic expander (4) gradually moves upward in the water, the water in the expander tube (4-1) flows out through the water permeable hole (4-4), the water pressure gradually decreases, the compressed gas (4-3) pushes the expander rod (4-2) to move toward the second limit position (4-6), the expander rod (4-2) drives the scissor lift frame (2) to descend through the nylon slider (5), and the scissor lift frame (2) drives the top cover (3) to descend.

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