A collection head experimental platform and a load testing and analysis method thereof

Abstract

The present invention discloses a collection head experimental platform, comprising: a traveling crane, a first motor; and a water suction pipe, a jet pump, an input pipe, a hydraulic collection head, an output pipe and a tuberculosis collection silo which are sequentially connected to the traveling crane; during the traveling process, the traveling crane drives the jet pump through the first motor to extract water from the water suction pipe and send it to the input pipe to form a high-speed jet; the experimental platform of the present invention is also equipped with electrical components such as cameras and sensors. In addition to providing power for the jet pump, the first motor can also provide power for electrical components such as flow sensors. The input pipe sends the high-speed jet into the hydraulic collection head, and drives the particles into the hydraulic collection head, and enters the tuberculosis collection silo together with the water flow through the output pipe. The present invention can be applied to deep-sea mining experiments and provide a useful reference for the research and development of deep-sea mining equipment technology.

Description

Technical Field

[0001] The present invention relates to the technical field of marine mining equipment, and in particular to a collection head experimental platform and a load testing and analysis method thereof. Background Art

[0002] With the rapid development of science and technology, people's demand for metal and mineral resources is gradually increasing. With the increasing scarcity of terrestrial mineral resources and the deepening of human exploration of the ocean, the deep seabed is becoming the next area for human beings to enter. Compared with land, the deep seabed contains a wide range of mineral resources, including not only traditional oil and gas, but also many metal and mineral resources that have not been fully studied and developed. The extremely rich mineral resources on the deep seabed are considered to be the most important successor resources for mankind in the 21st century. Deep-sea mining technology includes the preliminary survey of mineral resources, the research and development of deep-sea mining equipment, and the protection of the ocean floor environment. In addition, the extreme environment of the deep seabed, such as low temperature and high pressure, brings new technical challenges to equipment design and mining operations. At present, the development of deep-sea mining test technology is still immature, and the test design of various equipment lacks sufficient experience guidance, especially the test and analysis methods of the acquisition head test platform and its load.

[0003] CN117722182A discloses a deep-sea polymetallic nodule mining test system, wherein the ore collection mechanism includes a telescopic conveying channel and a collecting head, the telescopic conveying channel is provided with a telescopic driving mechanism, the collecting head is provided with a height probe, and the mining vehicle is also provided with a placing and recovering mechanism that can carry an ROV and can deploy and recover the ROV to detect the surrounding environment of the mining vehicle and assist the mining vehicle in mining operations. The deep-sea polymetallic nodule mining test system of the present invention has the advantages of high collection efficiency, accurate collection data, and reduced pollution. The collecting head in this technology is placed at the front end and horizontally close to the ground, which is easy to get stuck during the travel process, and the structure focuses on the monitoring function, and cannot test the load condition. Summary of the invention

[0004] The present invention aims to overcome at least one defect of the above-mentioned prior art and provide a collection head experimental platform with a simple structure that can adapt to the test requirements of various working conditions and different models of collection heads.

[0005] Specifically, the present invention includes a collection head experimental platform, including: a traveling crane, a first motor; and a water suction pipe, a jet pump, an input pipe, a hydraulic collection head, an output pipe, and a tuberculosis collection silo that are sequentially connected to the traveling crane; during the traveling process, the traveling crane drives the jet pump through the first motor to extract water from the water suction pipe and send it to the input pipe to form a high-speed jet; the experimental platform of the present invention is also equipped with electrical components such as cameras and sensors. In addition to providing power for the jet pump, the first motor can also provide power for electrical components such as flow sensors. The input pipe sends the high-speed jet into the hydraulic collection head, and drives the particles into the hydraulic collection head, and enters the tuberculosis collection silo together with the water flow through the output pipe.

[0006] The main function of the hydraulic collection head is to collect particles on the ground under the action of high-speed jets, and to send the mixture of water and particles through the output pipe to the nodule collection silo. The nodule collection silo is equipped with a screen, which is fixed by four iron chains and mounted on the bottom of the rear end of the driving deck and communicated with the end of the output pipe. Its main function is to filter out water from the mixed liquid and collect particles.

[0007] Furthermore, the traveling crane includes a vehicle body, a front support bracket and a rear support bracket; the front support bracket is arranged at the bottom of the front end of the vehicle body and is a rectangular bracket for fixing the hydraulic collection head; the rear support bracket is arranged at the middle bottom of the vehicle body and is used to support the output pipe and support the rear end of the hydraulic collection head.

[0008] The traveling crane and the hydraulic collection head are connected through the front support bracket and the rear support frame; the traveling crane is used to fix and support the hydraulic collection head, and at the same time bear the input pipe, output pipe, nodule collection silo, water absorption pipe and other equipment of the hydraulic collection head, and can move at a constant speed.

[0009] The jet pump is fixedly mounted on the upper part of the vehicle body, and can adjust the flow rate of the jet according to the data of the collection head, and extract the water from the water suction pipe to the input pipe to form a high-speed jet. The water suction pipe starts from the jet pump and extends backward from the upper layer of the vehicle body to the rear of the vehicle body, and the water is passed from here to the jet pump. The input pipe starts from the jet pump and leads to the lower layer of the vehicle body, and is connected to the interface of the hydraulic collection head to deliver high-speed jets.

[0010] Furthermore, the height of the bottom of the rear support bracket from the support plane is greater than the height of the bottom of the front support bracket from the support plane.

[0011] Furthermore, the front supporting bracket includes a plurality of first vertical brackets and a first horizontal bracket; the top of the first vertical bracket is connected to the top of the vehicle body, and the bottom is connected to the first horizontal bracket, and one or more load testing points are provided on the first horizontal bracket.

[0012] Furthermore, the first horizontal support includes a first support rod, a second support rod, a third support rod and a fourth support rod connected end to end to form a rectangle, and the first vertical support is four, which are respectively connected to the four corners of the rectangle; the straight lines where the first support rod and the third support rod are located are respectively perpendicular to the traveling direction of the vehicle; the first support rod is equipped with a strain gauge to form a first load testing point, and the third support rod is equipped with a strain gauge to form a second load testing point.

[0013] The front support bracket is connected to the bottom of the front end of the vehicle deck, and a rectangular bracket is extended downward, which is mainly used to fix and support the main body of the hydraulic collection head. The first and third support rods along the horizontal direction of the vehicle are mainly responsible for supporting the weight of the hydraulic collection head, and the second and fourth support rods along the longitudinal direction of the vehicle are mainly responsible for fixing the position of the hydraulic collection head. The rear support frame is connected to the middle bottom of the vehicle deck, and is mainly used to support the output pipe and support the rear end of the hydraulic collection head.

[0014] Furthermore, the rear support bracket includes a plurality of second vertical brackets and second horizontal brackets, the top of the second vertical bracket is connected to the top of the vehicle body, and the bottom is connected to the second horizontal bracket, and one or more load testing points are provided on the second horizontal bracket.

[0015] Furthermore, the second horizontal support includes a fifth support rod, a sixth support rod and a seventh support rod connected end to end to form a triangle; the fifth support rod and the sixth support rod are connected to form a first vertex, the sixth support rod and the seventh support rod are connected to form a second vertex, and the seventh support rod and the fifth support rod are connected to form a third vertex; there are two second vertical supports, and the bottoms are respectively connected to the second vertex and the third vertex; an eighth support rod is also provided between the two second vertical supports; the eighth support rod is parallel to the seventh support rod and is in the same vertical plane; the first vertex is equipped with a strain gauge to form a third load test point; the eighth support rod is equipped with a strain gauge to form a fourth load test point.

[0016] Furthermore, the first load test point and the second load test point are on the same horizontal plane; the third load test point and the fourth load test point are on the same vertical plane; the first load test point, the second load test point, the third load test point and the fourth load test point are on the same longitudinal section. The third load test point is a key part of the connection structure between the collection head and the vehicle body. The translation focusing on the third load test point is convenient for providing guidance for the connection design and load analysis of the collection head and the mining vehicle.

[0017] Furthermore, the traveling vehicle further comprises two sets of second motors, which are arranged at the bottom of the two ends of the rear side of the vehicle body and are used to provide power for the traveling vehicle. The traveling vehicle is equipped with two traveling motors.

[0018] The present invention also provides a method for testing and analyzing the load of a collection head experimental platform. The load data at a specific position is monitored by a strain gauge, and the distribution of the deadweight and environmental load during the collection head test is analyzed, providing a useful reference for the research and development of deep-sea mining equipment technology.

[0019] Specifically, the present invention protects a method for testing and analyzing the load of a collection head experimental platform, which uses the above-mentioned collection head experimental platform to perform testing and analysis, including the following steps:

[0020] S1: Record data: record the horizontal and vertical distances between load test points and the horizontal and vertical load data;

[0021] S2: Analyze data: The load at the load test point is translated and concentrated to the third load test point in the middle, and the load distribution of the collection head when it moves forward in the water tank and collects particles is obtained;

[0022] The calculation formula of the load analysis method is:

[0023] F x =-F 1x +F 2x +F 3x

[0024] F z =F 1z +F 2z +F 3z +F 4z

[0025]

[0026] Among them, F x is the total horizontal load, F z Total load in vertical direction, M is moment load at load concentration point, F 1x 、F 1z are the horizontal load and vertical load measured by the strain gauge at the first load test point, F 2x 、F 2z are the horizontal load and vertical load measured by the strain gauge at the second load test point, F 3x 、F 3z The horizontal load and vertical load measured by the strain gauge at the third load test point, F 4z is the vertical load measured by the strain gauge at the fourth load test point, d 12 is the horizontal distance between the first load test point and the second load test point, d 23 is the horizontal distance between the second load test point and the third load test point, d 34 is the horizontal distance between the third load test point and the fourth load test point, z 13is the vertical distance between the first load test point and the second load test point, z 34 It is the vertical distance between the third load test point and the fourth load test point.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The present invention provides a collection head test platform, which improves the fixed support method of the collection head and the traveling crane, and fixes and supports the hydraulic collection head by means of front and rear support frames, and can adapt to the test requirements of various working conditions and different types of collection heads. Through the water tank test research carried out by this device, it can provide a basis for optimizing the structural parameters of the collection head and improving the collection efficiency, and promote the development of deep-sea mining test technology.

[0029] (2) The present invention provides a method for testing and analyzing the load of a collection head. The load data at a specific position is monitored by a strain gauge, and the distribution of the deadweight and environmental load during the collection head test is analyzed. These data can be used to improve the connection design and load analysis between the collection head and the mining vehicle. The method for testing and analyzing the load of a collection head can be applied to deep-sea mining tests, providing a useful reference for the research and development of deep-sea mining equipment technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an overall view of the collection head experimental platform of the present invention.

[0031] Figure 2 This is a schematic diagram of the internal structure of the collection head experimental platform of the present invention.

[0032] Figure 3 It is a schematic diagram of the driving frame of the collection head experimental platform of the present invention.

[0033] Figure 4 This is another schematic diagram of the driving frame of the collection head experimental platform of the present invention.

[0034] Figure 5 Schematic diagram of measurement indicators in the load test and analysis method of the acquisition head experimental platform of the present invention

[0035] Figure numerals: 1, vehicle body, 2, hydraulic collection head, 3, front support bracket, 31, first vertical bracket, 321, first support rod, 322, second support rod, 323, third support rod, 324, fourth support rod; 4, rear support bracket, 41, second vertical bracket, 421, fifth support rod, 422, sixth support rod, 423, seventh support rod, 43, eighth support rod, 5, first motor, 6, jet pump, 7, input pipe, 8, output pipe, 9, water suction pipe, 10, nodule collection silo, 11, second motor, 13, first load test point, 14, second load test point, 15, third load test point, 16, fourth load test point. DETAILED DESCRIPTION

[0036] The drawings in the embodiments provide a more detailed description of the technical solutions in the embodiments of the present invention. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The embodiments of the present invention are described in detail below in conjunction with the drawings.

[0037] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] Example 1

[0040] like Figure 1 As shown, the purpose of this embodiment is to provide a collection head experimental platform, such as Figure 1 As shown, it includes a traveling crane and a wall-mounted jet hydraulic collection head 2. The vehicle body 1 and the hydraulic collection head 2 are connected through a front support bracket 3 and a rear support frame; the vehicle body 1 is used to fix and support the hydraulic collection head 2, and at the same time, it receives equipment such as an input pipeline 7, an output pipeline 8, a tuberculosis collection silo 10, and a water suction pipeline 9. Figure 2 As shown, the traveling vehicle includes a vehicle body 1, a front support bracket 3 and a rear support frame; the front support bracket 3 is arranged at the bottom of the front end of the vehicle body 1 and is a rectangular bracket for fixing the hydraulic collection head 2; the rear support bracket 4 is arranged at the middle bottom of the vehicle body 1 and is used to support the output pipe 8 and support the rear end of the hydraulic collection head 2.

[0041] The vehicle body 1 is equipped with a second motor 11, which can move along the track at different forward speeds to simulate the process of the collection equipment carrying the collection head moving on the seabed for collection.

[0042] The wall jet type hydraulic collection head 2 is fixedly supported on the front part of the vehicle body 1 by the front support bracket 3, and the rear support bracket 4 also plays a role of partial support and fixation, and also supports and fixes the output pipe 8. The height of the hydraulic collection head 2 from the ground can be adjusted by adjusting the front support bracket 3 and the rear support bracket 4.

[0043] The first motor 5 provides power for the jet pump 6, which sends the water in the pool to the input pipe 7 through the water suction pipe 9, forming a certain jet speed. The influence of different jet speeds on the collection work can be explored, and the jet speed and flow rate can be flexibly adjusted.

[0044] The input pipe 7 delivers water into the wall-jet hydraulic collection head 2 at a certain jet velocity, driving the simulated particles to rise, and together with the water flow, they enter the tuberculosis collection silo 10 through the output elbow. By adjusting the internal structure of the hydraulic collection head 2, such as the jet angle, nozzle spacing, nozzle shape and other parameters, the influence of different structural parameters on the collection work is explored. The hydraulic collection head 2 can be commercially available, and its internal structure is not a protection point of the present invention, and is not described in detail here.

[0045] The nodule collection silo 10 is provided with a screen and fixed by four iron chains to the rear end bottom of the deck of the vehicle body 1 and communicated with the end of the elbow of the output pipe 8. Its main function is to filter out the water in the mixed liquid and return it to the pool, and to collect particulate matter.

[0046] Combination Figure 3 and Figure 4 As shown, the front support bracket 3 of the present invention includes multiple first vertical brackets 31 and first horizontal brackets; the top of the first vertical bracket 31 is connected to the top of the vehicle body 1, and the bottom is connected to the first horizontal bracket, the first horizontal bracket includes a first support rod 321, a second support rod 322, a third support rod 323 and a fourth support rod 324 connected end to end to form a rectangle, and there are four first vertical brackets 31, which are respectively connected to the four corners of the rectangle; the straight lines where the first support rod 321 and the third support rod 323 are located are respectively perpendicular to the traveling direction of the vehicle; the first support rod 321 is equipped with a strain gauge to form a first load test point 13, and the third support rod 323 is equipped with a strain gauge to form a second load test point 14.

[0047] The rear support bracket 4 includes a plurality of second vertical brackets 41 and a second horizontal bracket, the top of the second vertical bracket 41 is connected to the top of the vehicle body 1, and the bottom is connected to the second horizontal bracket, the second horizontal bracket includes a fifth support rod 421, a sixth support rod 422 and a seventh support rod 423 connected end to end to form a triangle; the fifth support rod 421 and the sixth support rod 422 are connected to form a first vertex, the sixth support rod 422 and the seventh support rod 423 are connected to form a second vertex, and the seventh support rod 423 and the fifth support rod 421 are connected to form a third vertex; there are two second vertical brackets 41, and the bottoms are connected to the second vertex and the third vertex respectively; an eighth support rod 43 is also provided between the two second vertical brackets 41; the eighth support rod 43 is parallel to the seventh support rod 423 and is in the same vertical plane; the first vertex is equipped with a strain gauge to form a third load test point 15; the eighth support rod 43 is equipped with a strain gauge to form a fourth load test point 16.

[0048] The first load testing point 13 and the second load testing point 14 are on the same horizontal plane; the third load testing point 15 and the fourth load testing point 16 are on a vertical plane; the first load testing point 13, the second load testing point 14, the third load testing point 15 and the fourth load testing point 16 are on the same longitudinal section.

[0049] In order to explore the impact of different seabed environments on collection work, this example supports different underwater environments, such as clear water environment, sediment environment, and seabed environment with certain undulations.

[0050] Example 2

[0051] This embodiment is based on the collection head experimental platform of embodiment 1, and provides a load test and analysis method. Figure 5 As shown, the following steps are included:

[0052] During the device preparation stage, strain gauges were installed at four load test points to monitor the horizontal and vertical load data; the horizontal and vertical spacing between the load test points was recorded, d 12 =0.5m,d 23 =0.3m,d 34 =0.3m,z 13 =0.7m,z 34 =0.3m;

[0053] During the test phase, the strain gauge load data is recorded in real time. 1x =500N, F 1z =2200N, F 2x =1300N, F 2z =2000N, F 3x =1500N, F 3z=700N, F 4z =300N;

[0054] Analyze the load data, shift the load at the load test point to the load test point 3 in the center, and use the formula proposed above to obtain the load distribution of the collection head when it moves forward in the water tank and collects particles, F x =2300N,F y =5200N,M=-2830N·m.

[0055] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention. Those skilled in the art may also make other changes within the spirit of the present invention and apply them to the design of the present invention, as long as they do not deviate from the technical effects of the present invention. These changes made according to the spirit of the present invention should be included in the scope of protection claimed by the present invention.

Claims

1. A collection head experimental platform, characterized in that: include: Driving, first motor (5); and a water suction pipe (9), a jet pump (6), an input pipe (7), a hydraulic collection head (2), an output pipe (8) and a nodule collection silo (10) which are sequentially connected to the traveling vehicle; When the vehicle is moving, the first motor (5) drives the jet pump (6) to extract water from the water suction pipe (9) and send it to the input pipe (7), thereby forming a high-speed jet; the input pipe (7) sends the high-speed jet into the hydraulic collection head (2), and drives the particles into the hydraulic collection head (2), and enters the nodule collection bin (10) together with the water through the output pipe (8); The vehicle comprises a vehicle body (1), a front support bracket (3) and a rear support bracket (4); The front support bracket (3) is arranged at the bottom of the front end of the vehicle body (1) and is a rectangular bracket used to fix the hydraulic collection head (2); The rear support bracket (4) is arranged at the middle bottom of the vehicle body (1) and is used to support the output pipe (8) and the rear end of the hydraulic collection head (2); The front support bracket (3) comprises a plurality of first vertical brackets (31) and a first horizontal bracket; the top of the first vertical bracket (31) is connected to the top of the vehicle body (1), and the bottom is connected to the first horizontal bracket; and the first horizontal bracket is provided with one or more load test points; The first horizontal support comprises a first support rod (321), a second support rod (322), a third support rod (323) and a fourth support rod (324) connected end to end to form a rectangle; the first vertical support rod (31) is four and respectively connected to the four corners of the rectangle; the straight lines where the first support rod (321) and the third support rod (323) are located are respectively perpendicular to the traveling direction of the vehicle; the first support rod (321) is equipped with a strain gauge to form a first load test point (13), and the third support rod (323) is equipped with a strain gauge to form a second load test point (14).

2. The collection head experimental platform according to claim 1, characterized in that: The height of the bottom of the rear support bracket (4) from the support plane is greater than the height of the bottom of the front support bracket (3) from the support plane.

3. The collection head experimental platform according to claim 1, characterized in that: The rear support bracket (4) comprises a plurality of second vertical brackets (41) and a second horizontal bracket, the top of the second vertical bracket (41) is connected to the top of the vehicle body (1), and the bottom is connected to the second horizontal bracket, and one or more load test points are provided on the second horizontal bracket.

4. The collection head experimental platform according to claim 3, characterized in that: The second horizontal support comprises a fifth support rod (421), a sixth support rod (422) and a seventh support rod (423) which are connected end to end to form a triangle; The fifth support rod (421) and the sixth support rod (422) are connected to form a first vertex, the sixth support rod (422) and the seventh support rod (423) are connected to form a second vertex, and the seventh support rod (423) and the fifth support rod (421) are connected to form a third vertex; There are two second vertical supports (41), and the bottoms are respectively connected to the second vertex and the third vertex; an eighth support rod (43) is also provided between the two second vertical supports (41); the eighth support rod (43) is parallel to the seventh support rod (423) and is located in the same vertical plane; the first vertex is equipped with a strain gauge to form a third load test point (15); and the eighth support rod (43) is equipped with a strain gauge to form a fourth load test point (16).

5. The collection head experimental platform according to claim 4, characterized in that: The first load test point (13) and the second load test point (14) are on the same horizontal plane; the first load test point (13), the second load test point (14), the third load test point (15) and the fourth load test point (16) are on the same longitudinal section.

6. The collection head experimental platform according to claim 1, characterized in that: The vehicle further comprises two sets of second motors (11), wherein the second motors (11) are arranged at the bottom of both ends of the rear side of the vehicle body (1) and are used to provide power for the vehicle movement.

Images