Ship grain sampling machine and sampling method

Abstract

The invention discloses a ship grain sampling machine and sampling method, comprising a chassis unit, a boom unit and a sampling unit arranged in sequence from bottom to top, a connecting column and a support, the connecting column and the support are connected by a pin shaft; an angle adjustment cylinder is also provided on one side of the pin shaft, and the angle adjustment cylinder is connected between the connecting column and the support. The beneficial effect of the invention is that the track of the chassis unit can be extended along with the track extension cylinder, thereby increasing the stability of the equipment during the sampling process. The boom unit can complete lifting and rotation, and the counterweight structure can be retracted to achieve counterweight stability. The sampling unit can present two states, horizontal and vertical, and the sampling rod can realize automatic sampling and bottoming rebound under the control of the electrical unit, and can also realize random point sampling. The hydraulic unit and the electrical unit work together to realize automatic sampling of grain transport ships, which is convenient and fast, and the work efficiency is significantly improved.

Description

Technical Field

[0001] The invention relates to the field of grain sampling equipment, in particular to a ship grain sampling machine and a sampling method. Background Art

[0002] With the development of economy, different industries have an increasing demand for different types of grains such as wheat, soybeans, corn, and rice, and the means of grain transportation are also changing. More and more vehicles, trains, ships and other means of transportation are constantly joining the ranks of grain transportation. In particular, ships transporting bulk grains need to take samples to test various quality indicators of grains to ensure food safety. In ports and docks, grain sampling still has the following problems:

[0003] (1) High manpower and time costs

[0004] Traditionally, grain sampling is done by manually inserting a sampling rod about 2 meters long into a grain pile for sampling. This is not only labor-intensive, but also when sampling grain piles over 4 meters high, the upper layer of grain must be unloaded before sampling the lower layer of grain. It is also time-consuming and cannot meet the needs of rapid turnover at ports.

[0005] (2) Manual sampling poses a major safety hazard

[0006] At present, during the sampling process of ships at the dock, workers need to hold a 2-3m sampling tube and climb up to the grain pile in the cabin, and insert the sampling tube into the grain pile manually. During the operation, there are safety risks:

[0007] a. The grain surface is soft and unstable, and there is a risk of falling into it;

[0008] b. The sea surface is unstable and prone to shaking, which can also cause instability and the risk of falling into the sea;

[0009] c. For large ships, the grain surface is relatively high, which involves high-altitude operations and poses a high safety hazard.

[0010] (3) The sampling process is greatly affected by human factors, and there is a problem of non-standard sample collection.

[0011] According to the national standard "GB / T 5491-1985 Grain and Oil Inspection, Sampling and Sampling Method", during grain sampling, it is necessary to ensure that sampling is done in different zones and in different layers. In the manual sampling process, it is impossible to accurately divide the zones, the selection of sampling points is greatly affected by human factors, and the stratified sampling is mostly done based on experience, which cannot meet the requirements of relevant national standards.

[0012] (4) The level of automated sampling operations on ships in the reservoir area is relatively low

[0013] The existing operation method of ship sampling in the reservoir area is manual sampling, which is a traditional operation method and does not meet the requirements of the mechanization and automation trend of modern agriculture, and is in urgent need of transformation and upgrading.

[0014] (5) Manual sampling is labor-intensive, has a harsh environment, and is inefficient

[0015] Manual sampling is to complete the sample collection work by manpower, carrying a 2-3m sampling tube to carry out multi-point sampling on the grain surface. The sampling process of a single cabin takes nearly 1 hour, which is labor-intensive. At the same time, the working environment is very bad in high temperature weather, and it is urgent to improve the working environment. Summary of the invention

[0016] The purpose of the present invention is to overcome the above technical defects and to provide a ship grain sampling machine and sampling method which have improved automation and are convenient and fast.

[0017] The technical solution adopted by the present invention to achieve its technical purpose is: a ship grain sampling machine comprises a chassis unit, a large arm unit and a sampling unit which are arranged in sequence from bottom to top, the chassis unit comprises a chassis base, a turntable is arranged at the center of the chassis base, a crawler is arranged on the outside, and a driving steering system for driving the crawler is also arranged between the chassis base and the crawler; a crawler extension cylinder is also arranged on the crawler, and a generator and a chassis counterweight are also arranged on the chassis base;

[0018] The boom unit comprises a supporting column and a rotating column, the lower part of the rotating column is connected to the rotating disk of the chassis base, the supporting column is sleeved in the rotating column, the upper part of the supporting column is connected to a telescopic boom, one end of the telescopic boom is connected to a counterweight structure, and the other end is connected to the sampling unit;

[0019] The sampling unit comprises a sampling rod support and a sampling rod. Sprocket wheels are arranged at both ends of the sampling rod support, a chain is wound between the sprocket wheels, and the sampling rod is connected to the chain through a connecting frame. A sampling rod driving mechanism is also arranged on the sampling rod support, and an automatic rebound device is also arranged on the sampling rod.

[0020] A connecting column is also provided on the telescopic boom, and a support is also provided on the rod bracket. The connecting column and the support are connected by a pin shaft; an angle adjustment cylinder is also provided on one side of the pin shaft, and the tail end of the angle adjustment cylinder is connected to the connecting column, and the end of the piston rod is connected to the support.

[0021] Preferably, the automatic rebound device includes a compression spring and a sleeve which are sleeved on the sampling rod, the sleeve is connected above the compression spring and connected to the sampling rod bracket, a first pair of clamping flanges are sleeved above the sleeve and on the sampling rod, and there is a gap between the lower surface of the first pair of clamping flanges and the upper surface of the sleeve, a second pair of clamping flanges are sleeved at the lower end of the compression spring and on the sampling rod, a spring adjustment bolt passes through the first pair of clamping flanges and the second pair of clamping flanges, and the spring adjustment bolt is used to control the extension length of the compression spring; a micro switch is also provided on the outside of the first pair of clamping flanges.

[0022] Preferably, the counterweight structure is a telescopic counterweight structure, including a counterweight frame, a counterweight cylinder, and a counterweight block. The counterweight frame is connected to the telescopic boom, and the counterweight block is connected to the counterweight frame through a pulley structure. The cylinder barrel of the counterweight cylinder is connected to the top of the telescopic boom through a connecting support, and the end of the piston rod of the counterweight cylinder is connected to the upper part of the counterweight frame; the counterweight cylinder can drive the counterweight frame and the counterweight block to move along the telescopic boom.

[0023] Preferably, it also includes a hydraulic unit for driving the ship grain sampling machine, the hydraulic unit includes an oil tank, a pipeline, a valve group, a hydraulic cylinder and a hydraulic motor, and the pipeline connects the oil tank, the valve group and the hydraulic cylinder to form a hydraulic circuit;

[0024] The oil tank is provided with a liquid temperature and level gauge, an air filter, a liquid level transmitter, and a temperature transmitter, an oil suction filter is provided at the oil supply port of the oil tank, and an oil return filter is provided at the oil return port;

[0025] The oil suction filter is connected with a low-pressure cut-off ball valve, a gear pump, a bell housing coupling, a diesel engine, a one-way valve, a high-pressure filter, a hydraulic joint, a pressure measuring hose, and an electric contact pressure gauge to complete the oil supply to the valve group, the hydraulic cylinder, and the hydraulic motor;

[0026] The oil return filter is connected to a multi-way reversing valve and an air cooler to complete the oil return from the hydraulic cylinder and the hydraulic motor to the oil tank.

[0027] Preferably, the hydraulic cylinder includes a left track extension cylinder, a right track extension cylinder, a boom telescopic cylinder, a counterweight cylinder, a sampling unit amplitude adjustment cylinder, and a chassis rotation cylinder, and the hydraulic motor includes a left crawler travel motor and a right crawler travel motor.

[0028] Preferably, it also includes an electrical unit for driving the ship grain sampling machine, the electrical unit includes a control part, a monitoring part and a human-computer interaction part, the control part includes a PLC and a secondary control, the monitoring part includes a camera, a hard disk recorder, and a display, and the human-computer interaction part includes a remote control, a computer, a control cabinet, and a touch screen.

[0029] The sampling method of the ship grain sampling machine is the following process:

[0030] (1) The sampling area is set according to the working area of ​​the grain sampling machine on the ship, and the ship is moored and fixed in place as required;

[0031] (2) The operator of the grain sampling machine on board the ship moves the sampling machine to the front or rear end of the cabin by remote control, controls the extension of the crawler track to increase stability through the remote control, and determines the automatic sampling reference point through the camera;

[0032] (3) After the reference point of the grain sampling machine is determined, click the LCD touch screen of the control cabinet to select the ship type for sampling. After the ship type is determined, the operator raises or lowers the height of the boom according to the tide conditions;

[0033] (4) After the ship type and boom height are set, the system generates sampling points based on the ship type data. The sampling points are automatically calculated by the computer;

[0034] (5) After the sampling rod reaches the designated position, the fan is turned on and the sampling rod begins to descend. During the descent, the grain is pumped into the grain collecting barrel. After the sampling rod is in place, the solenoid valve at the upper end of the sampling rod opens, and all the grain behind the solenoid valve enters the grain collecting barrel. The pneumatic valve of the grain collecting barrel opens, and the grain enters the distribution bin. When there is no grain in the grain collecting barrel, the valve closes.

[0035] (6) Close the solenoid valve to start stratified sampling, set the solenoid valve closing time, start pumping the lower layer of grain, open the solenoid valve to complete the lower layer sampling, raise the sampling rod to start pumping the middle layer of grain, and so on to complete the upper, middle and lower three layers of sampling;

[0036] (7) When the sampling rod returns to the uppermost end, the pneumatic gate of the sample divider opens, and the grain enters the dividing bin. The grain is sampled, and 1 / 8 enters the sample box, which is the first sampling point. The sampling arm automatically moves to the next point and repeats the previous sampling work until all the points set by the system are sampled;

[0037] (8) After the sampling is completed, the sampling rod returns to its initial position and the arm rotates to its initial position; the sampling rod is equipped with a hydraulic system, and the operator places the sampling rod horizontally; when there is no sampling task, the sampling machine is driven away from the dock operation area.

[0038] The beneficial effects of the present invention are as follows: the crawler tracks of the chassis unit can be extended along with the crawler extension cylinder, and after the extension, the overall width of the chassis unit increases from 3 meters to 4 meters, thereby increasing the stability of the equipment during the sampling process. The large arm unit can be lifted and rotated, and the counterweight structure can be retracted to adjust the counterweight moving position and achieve counterweight stability. The sampling unit can be in both horizontal and vertical states, and the sampling rod can realize automatic sampling and bottoming rebound under the control of the electrical unit, and can also realize random point sampling. The present invention realizes automatic sampling of grain transport ships under the cooperation of the hydraulic unit and the electrical unit, which is convenient and fast, and significantly improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is an overall schematic diagram of the present invention;

[0040] Figure 2 is a schematic diagram of the chassis unit;

[0041] Figure 3 Schematic diagram of the horizontal state of the sampling unit;

[0042] Figure 4 Schematic diagram of the upper structure of the sampling unit;

[0043] Figure 5 Schematic diagram of the lower end structure of the sampling unit

[0044] Figure 6 This is a flow chart of sampling process of ship sampling machine;

[0045] Figure 7 It is the working principle diagram of the overall hydraulic system of the present invention;

[0046] Figure 8 The state diagram of the sampling machine moving to the ship sampling station;

[0047] Fig. 9 The diagram shows the state where the boom rotates to the horizontal position of the rod;

[0048] Fig.10 The state diagram of verticalizing the pole and adjusting the height of the column;

[0049] Fig.11 This is the diagram of the telescopic boom in the extended state;

[0050] Fig.12 This is the automatic lifting state diagram of the rod;

[0051] Fig.13 The state diagram of the sampling machine automatically shifting to the next sampling point;

[0052] Fig.14 This is the telescopic boom retracted state diagram;

[0053] Fig.15This is the diagram of the sampling rod resetting and the sampling machine moving status.

[0054] The figure is marked

[0055] 1. Chassis unit; 2. Big arm unit; 3. Sampling unit; 4. Connecting column; 5. Support; 6. Pin shaft;

[0056] 7. Angle adjustment cylinder; 8. Hydraulic unit; 9. Ship; 11. Chassis base; 12. Turntable;

[0057] 13. crawler track; 14. crawler track extension cylinder; 21. support column; 22. slewing column; 23. telescopic boom; 24. counterweight structure; 241. counterweight frame; 242. counterweight cylinder; 243. counterweight block; 244. pulley structure; 245. connecting support; 31. rod support; 32. sampling rod; 33. sprocket; 34. chain;

[0058] 35. Connecting frame; 36. Skewer driving mechanism; 37. Automatic rebound device; 371. Compression spring;

[0059] 372, sleeve; 373, first pair of clamping flanges; 374, second pair of clamping flanges; 375, spring adjustment bolt;

[0060] 376, micro switch; 81, fuel tank; 82, liquid temperature and level gauge; 83, air filter;

[0061] 84. Liquid level transmitter; 85. Oil return filter; 86. Temperature transmitter; 87. Low-pressure stop ball valve;

[0062] 88. Gear pump; 89. Bell housing + coupling; 810. Diesel engine; 811. Check valve;

[0063] 812, high pressure filter; 813, hydraulic joint; 814, pressure measuring hose; 815, electric contact pressure gauge;

[0064] 816, multi-way reversing valve; 817, oil suction filter; 818, air cooler; 821, left crawler extension cylinder; 822, right crawler extension cylinder; 823, boom extension cylinder; 824, counterweight cylinder;

[0065] 825. Sampling unit boom cylinder; 826. Chassis rotation cylinder; 827. Crawler left travel motor;

[0066] 828. Crawler right travel motor; 829. Column extension cylinder. DETAILED DESCRIPTION

[0067] The present invention will be further described below in conjunction with the accompanying drawings:

[0068] like Figure 1-15 As shown:

[0069] The ship grain sampling machine comprises a chassis unit 1, a large arm unit 2 and a sampling unit 3 which are arranged in sequence from bottom to top. The chassis unit 1 comprises a chassis base 11, a turntable 12 is arranged at the center of the chassis base 11, a crawler 13 is arranged on the outside, and a driving steering system for driving the crawler 13 is also arranged between the chassis base 11 and the crawler 13; a crawler extension cylinder 14 is also arranged on the crawler 13, and a generator and a chassis counterweight are also arranged on the chassis base 11;

[0070] The arm unit 2 includes a support column 21 and a swivel column 22. The lower part of the swivel column 22 is connected to the turntable 12 of the chassis base 11. The support column 21 is sleeved in the swivel column 22. The upper part of the support column 21 is connected to a telescopic arm 23. One end of the telescopic arm 23 is connected to a counterweight structure 24, and the other end is connected to the sampling unit 3.

[0071] The sampling unit 3 includes a sampling rod support 31 and a sampling rod 32. Sprocket wheels 33 are provided at both ends of the sampling rod support 31. A chain 34 is wound around the sprocket wheels 33. The sampling rod 32 is connected to the chain 34 through a connecting frame 35. A sampling rod driving mechanism 36 for driving the sprocket wheel 33 is also provided on the sampling rod support 31. An automatic rebound device 37 is also provided on the sampling rod 32.

[0072] A connecting column 4 is also provided on the telescopic arm 23, and a support 5 is also provided on the rod bracket 31. The connecting column 4 and the support 5 are connected by a pin 6; an angle adjustment cylinder 7 is also provided on one side of the pin 6, and the tail end of the angle adjustment cylinder 7 is connected to the connecting column 4, and the end of the piston rod is connected to the support 5.

[0073] The automatic rebound device 37 includes a compression spring 371 and a sleeve 372 which are sleeved on the sampling rod 32. The sleeve 372 is connected above the compression spring 371 and is connected to the sampling rod bracket 31. A first pair of clamping flanges 373 are sleeved above the sleeve 372 and on the sampling rod 32, and there is a gap between the lower surface of the first pair of clamping flanges 373 and the upper surface of the sleeve 372. A second pair of clamping flanges 374 are sleeved at the lower end of the compression spring 371 and on the sampling rod 32. A spring adjusting bolt 375 runs through the first pair of clamping flanges 373 and the second pair of clamping flanges 374. The spring adjusting bolt 375 is used to control the extension length of the compression spring 371. A micro switch 376 is also provided on the outer side of the first pair of clamping flanges 373.

[0074] The counterweight structure 24 is a telescopic counterweight structure, including a counterweight frame 241, a counterweight cylinder 242, and a counterweight block 243. The counterweight frame 241 is connected to the telescopic boom 23, and the counterweight block 243 is connected to the counterweight frame 241 through a pulley structure 244. The cylinder barrel of the counterweight cylinder 242 is connected to the top of the telescopic boom 23 through a connecting support 245, and the end of the piston rod of the counterweight cylinder 242 is connected to the upper part of the counterweight frame 241; the counterweight cylinder 242 can drive the counterweight frame 241 and the counterweight block 243 to move along the telescopic boom 23.

[0075] It also includes a hydraulic unit 8 for driving the ship grain sampling machine, the hydraulic unit includes an oil tank 81, a pipeline, a valve group, a hydraulic cylinder and a hydraulic motor, and the pipeline connects the oil tank 81, the valve group and the hydraulic cylinder to form a hydraulic circuit;

[0076] The oil tank 81 is provided with a liquid temperature and level gauge 82, an air filter 83, a liquid level transmitter 84, and a temperature transmitter 86. The oil supply port of the oil tank 81 is provided with an oil suction filter 817, and the oil return port is provided with an oil return filter 85;

[0077] The oil suction filter 817 is connected to a low-pressure cut-off ball valve 87, a gear pump 88, a bell housing coupling 89, a diesel engine 810, a one-way valve 811, a high-pressure filter 812, a hydraulic joint 813, a pressure measuring hose 814, and an electric contact pressure gauge 815 to complete the oil supply to the valve group, the hydraulic cylinder and the hydraulic motor;

[0078] The oil return filter 85 is connected to a multi-way reversing valve 816 and an air cooler 818 to complete the oil return from the hydraulic cylinder and the hydraulic motor to the oil tank 81 .

[0079] The hydraulic cylinders include a left track extension cylinder 821, a right track extension cylinder 822, a boom telescopic cylinder 823, a counterweight cylinder 824, a sampling unit amplitude adjustment cylinder 825, a chassis rotation cylinder 826, and a column extension cylinder 829, and the hydraulic motors include a left track travel motor 827 and a right track travel motor 828.

[0080] It also includes an electrical unit for driving the ship grain sampling machine, which includes a control part, a monitoring part and a human-computer interaction part. The control part includes a PLC and a secondary control, the monitoring part includes a camera, a hard disk recorder, and a display, and the human-computer interaction part includes a remote control, a computer, a control cabinet, and a touch screen.

[0081] The working principle of the present invention is as follows:

[0082] The sampling unit 3 is moved to the shore where the boat 9 is moored by the movement of the chassis unit 1, within two meters of the shore, and the length direction of the sampling unit 3 is parallel to the shore. The operator extends the crawler extension cylinder 14 through the remote control, and the crawler 13 is extended accordingly. After the extension, the overall width of the chassis unit 1 increases from 3 meters to 4 meters, increasing the stability of the equipment during the sampling process.

[0083] Before sampling, the operator finds the relative position reference point between the sampling unit 3 and the mooring 9 through observation. The operator controls the arm unit 2 to rotate to be perpendicular to the shore through the remote control. The slewing column 22 is driven by the column extension cylinder 829 to rise and fall to the appropriate height for sampling. The angle adjustment cylinder 7 is controlled to shrink, and the support 5 is driven to rotate and rise until the support 5 drives the rod support 31 and the sampling rod 32 to rotate to a vertical position, and the sampling rod 32 is perpendicular to the ground. The mooring 9 model is selected through the touch screen, and the sampling start button is clicked, and the fan starts automatically.

[0084] The telescopic boom 23 automatically extends to a certain position. During the extension of the telescopic boom 23, the counterweight cylinder 242 at the rear of the telescopic boom 23 also extends accordingly, pushing the counterweight frame 241 with the pulley structure 244 and the counterweight block 243 to extend backward along the telescopic boom 23. The displacement is detected in real time by the pull rope displacement sensor. The counterweight block 243 automatically extends and retracts at the same time through the feedback signal of the boom displacement sensor, ensuring that the center of gravity is within the set range and ensuring the safety and stability of the sampling machine. The sampling rod 32 automatically descends and inserts into the grain until the bottom of the ship.

[0085] During the insertion of the sampling rod 32, the electromagnetic switch valve on the grain suction pipe automatically opens and closes according to the setting. When the residual material electromagnetic switch valve is opened, the grain enters the Shaklon device. When the sampling rod is inserted to the bottom of the ship, the residual material electromagnetic switch valve is closed, and the grain in the Shaklon device automatically falls back to the cabin. At the same time, the sample separation electromagnetic valve is opened, and the inspection grain is sucked in through the sampling rod and transported to the grain barrel through the grain suction pipe. The purpose of stratified sampling is achieved by opening and closing the sample separation electromagnetic switch valve.

[0086] When the sampling rod 32 is inserted to the bottom of the mooring 9, the sprockets 33, chains 34, and the rod driving mechanism 36, i.e., the reduction motor, driving the sampling rod 32 to continue to be inserted downward, so that the compression spring 371 on the upper part of the sampling rod 32 is compressed, and the micro switch 376 at the compression spring 371 is actuated, thereby controlling the sampling rod 32 to automatically stop when it descends to the lower limit, thereby realizing the automatic rebound function of the sampling rod 32. After the sampling area perpendicular to the shore is completed, the system voice prompts the operator that the sampling machine is ready to move forward. The operator confirms that the equipment can be moved, presses the button to allow movement, and the sampling machine moves forward. During the movement, the operator observes the movement trajectory of the equipment. If the equipment deviates greatly, the remote control is manually assisted to perform steering correction.

[0087] When the equipment automatically moves to the next sampling area, the sampling is automatically completed, and the process is the same as above until the sampling point is completed. The telescopic arm 23 of the sampling machine is retracted, and the remote control controls the angle adjustment cylinder 7 to extend, pushing the support 5 to rotate and level, until the support 5 drives the rod support 31 and the sampling rod 32 to a horizontal position, the rotary column 22 descends to the bottom, and the sampling unit 3 rotates to be parallel to the length direction of the telescopic arm 23, and the sampling machine is manually driven away.

[0088] The electricity for the entire machine can be provided by a vehicle-mounted diesel generator set, without the need to draw electricity from the dock, thus maximizing the mobility of the equipment.

[0089] The sampling method of the ship grain sampling machine of the present invention is the following process:

[0090] (1) The sampling area is set according to the working area of ​​the grain sampling machine on the ship, and the ship is moored and fixed in place as required;

[0091] (2) The operator of the grain sampling machine on board the ship moves the sampling machine to the front or rear end of the cabin by remote control, controls the crawler 13 to extend to increase stability through the remote control, and determines the automatic sampling reference point through the camera;

[0092] (3) After the reference point of the ship grain sampling machine is determined, click the LCD touch screen of the control cabinet to select the ship type for this sampling. After the ship type is determined, the operator raises or lowers the height of the telescopic boom 23 in the boom unit 2 according to the conditions of the tide;

[0093] (4) After the ship shape and the height of the telescopic boom 23 are set, the system generates sampling points according to the ship shape data. The sampling points are automatically calculated and generated by the computer;

[0094] (5) After the sampling rod 32 reaches the designated position, the fan is turned on and the sampling rod begins to descend. During the descent, the grain is pumped into the grain collecting barrel. After the sampling rod 32 has descended to the designated position, the solenoid valve at the upper end of the sampling rod 32 is opened, and all the grain behind the solenoid valve enters the grain collecting barrel. The pneumatic valve of the grain collecting barrel is opened, and the grain enters the distribution bin. When there is no grain in the grain collecting barrel, the valve is closed.

[0095] (6) Close the solenoid valve to start stratified sampling, set the solenoid valve closing time, start pumping the lower layer of grain, open the solenoid valve to complete the lower layer sampling, raise the sampling rod to start pumping the middle layer of grain, and so on to complete the upper, middle and lower three layers of sampling;

[0096] (7) When the sampling rod 32 returns to the uppermost end, the pneumatic gate of the sample divider opens, the grain enters the dividing bin, the grain is sampled, and 1 / 8 enters the sample box, which is the first sampling point; the sampling arm automatically moves to the next point and repeats the previous sampling work until all the points set by the system are sampled;

[0097] (8) After the sampling is completed, the sampling rod 32 returns to the initial horizontal position, and the arm rotates to the initial position; the sampling rod 32 is equipped with a hydraulic unit 8, and the hydraulic principle is as follows Figure 7 As shown, the operator places the sampling rod 32 horizontally; after there is no sampling task, the sampling machine is driven away from the dock operation area.

[0098] Specifically, the sampling process of the ship grain sampling machine is as follows:

[0099] (1) The sampling area is set according to the working area of ​​the ship sampling equipment, and the ship 9 is anchored and fixed in place as required; according to the on-site investigation, the movable working area is about 50 meters.

[0100] (2) The operator of the ship moves the sampling machine to the front or rear end of the cabin by remote control, controls the extension of the tracks by remote control to increase stability, and determines the reference point of automatic sampling by camera. For manual sampling, there is no need to find the reference point.

[0101] Positioning solution: The rotating column camera of the sampling machine is customized, with an internal crosshair, so that the sampling machine can be manually judged on the monitoring screen in the control room whether it has moved to the reference point.

[0102] (3) After the reference point of the ship sampling equipment is determined, click the LCD touch screen of the control cabinet to select the ship type for this sampling. After the ship type is determined, the operator raises or lowers the height of the boom according to the tide conditions. The boom lifting stroke can reach 1.5 meters. The specific ship type data and sampling model can be customized according to user requirements to meet the user's sampling requirements for grain layers at different depths.

[0103] (4) After the ship type and boom height are set, the system generates sampling points based on the ship type data. The sampling points are automatically calculated by the computer and cannot be intervened by humans. The sampling rod automatically finds points for sampling according to the system program settings. The layout of the sampling points is established and generated based on the ship type data. When the data model is established, factors such as ship shaking and errors are fully considered to effectively prevent sampling from reaching the outside of the ship. If the sampling rod touches the deck during the sampling process, the sampling rod's bottoming rebound function is enabled and the next sampling process will be entered in sequence. If the number of sampling samples is insufficient or other special circumstances occur later, it can be switched to manual mode and the sampling can be manually operated by the remote control.

[0104] (5) After the sampling rod reaches the designated position, the fan is turned on and the sampling rod begins to descend. During the descent, the grain is pumped into the grain collection barrel. After the sampling rod is in place, the solenoid valve at the upper end of the sampling rod is opened, so that all the grain behind the solenoid valve enters the grain collection barrel. The pneumatic valve of the grain collection barrel opens, and the grain enters the direction bin (the direction bin is in the waste pipe at this time). When there is no grain in the grain collection barrel, the valve is closed, and the direction bin is switched to the sampling tube. At this time, the solenoid valve is closed to start stratified sampling. The solenoid valve closing time is set to start pumping the lower layer of grain. The solenoid valve is opened to complete the sampling of the lower layer. The sampling rod is raised to start pumping grain from the middle layer, and so on to complete the sampling of the upper, middle and lower layers. When the sampling rod returns to the upper end, the pneumatic gate of the sample divider is opened, and the grain enters the direction bin (the direction bin is in the sampling tube at this time). The grain is sampled, and 1 / 8 enters the sample box, which is the first sampling point. The sampling arm automatically moves to the next point. Repeat the previous sampling work until all the points set by the system are sampled. For this sampling and subsampling process, refer to the grain sampling and subsampling method in patent 2017212062493.

[0105] (6) The sampling machine is automatically generated by the system. The sampling machine can move automatically during the process of finding the point. The operator will be prompted by voice before moving. After the operator confirms with the remote control, the sampling machine will move automatically. After finding the fixed point, sampling will be carried out again.

[0106] (7) When the sampling of the ship is completed, the sampling rod returns to the initial position and the telescopic arm 23 rotates to the initial position. The sampling rod is equipped with a hydraulic system, and the operator can place the sampling rod horizontally. When there is no sampling task, the sampling machine can be driven away from the dock operation area.

Claims

1. A grain sampling machine for ships, comprising a chassis unit, a large arm unit and a sampling unit arranged in sequence from bottom to top, characterized in that: The chassis unit comprises a chassis base, a turntable is arranged at the center of the chassis base, crawlers are arranged on the outside, and a driving steering system for driving the crawlers is arranged between the chassis base and the crawlers; a crawler extension cylinder is arranged on the crawlers, and a generator and a chassis counterweight are arranged on the chassis base; The boom unit comprises a supporting column and a rotating column, the lower part of the rotating column is connected to the rotating disk of the chassis base, the supporting column is sleeved in the rotating column, the upper part of the supporting column is connected to a telescopic boom, one end of the telescopic boom is connected to a counterweight structure, and the other end is connected to the sampling unit; The sampling unit comprises a sampling rod support and a sampling rod. Sprocket wheels are arranged at both ends of the sampling rod support, a chain is wound between the sprocket wheels, and the sampling rod is connected to the chain through a connecting frame. A sampling rod driving mechanism is also arranged on the sampling rod support, and an automatic rebound device is also arranged on the sampling rod. A connecting column is also provided on the telescopic boom, and a support is also provided on the rod bracket, and the connecting column and the support are connected by a pin shaft; an angle adjustment cylinder is also provided on one side of the pin shaft, and the tail end of the angle adjustment cylinder is connected to the connecting column, and the end of the piston rod is connected to the support; The automatic rebound device comprises a compression spring and a sleeve sleeved on the sampling rod, the sleeve is connected above the compression spring and connected to the sampling rod bracket, a first pair of clamping flanges are sleeved on the sampling rod above the sleeve, and there is a gap between the lower surface of the first pair of clamping flanges and the upper surface of the sleeve, a second pair of clamping flanges are sleeved on the lower end of the compression spring and the sampling rod, a spring adjustment bolt runs through the first pair of clamping flanges and the second pair of clamping flanges, and the spring adjustment bolt is used to control the extension length of the compression spring; a micro switch is also provided on the outer side of the first pair of clamping flanges; The counterweight structure is a telescopic counterweight structure, including a counterweight frame, a counterweight cylinder, and a counterweight block. The counterweight frame is connected to the telescopic boom, and the counterweight block is connected to the counterweight frame through a pulley structure. The cylinder barrel of the counterweight cylinder is connected to the top of the telescopic boom through a connecting support, and the end of the piston rod of the counterweight cylinder is connected to the upper part of the counterweight frame; the counterweight cylinder can drive the counterweight frame and the counterweight block to move along the telescopic boom.

2. The ship grain sampling machine according to claim 1, characterized in that: It also includes a hydraulic unit for driving the ship grain sampling machine, the hydraulic unit includes an oil tank, a pipeline, a valve group, a hydraulic cylinder and a hydraulic motor, and the pipeline connects the oil tank, the valve group and the hydraulic cylinder to form a hydraulic circuit; The oil tank is provided with a liquid temperature and level gauge, an air filter, a liquid level transmitter, and a temperature transmitter; an oil suction filter is provided at the oil supply port of the oil tank, and an oil return filter is provided at the oil return port; The oil suction filter is connected with a low-pressure cut-off ball valve, a gear pump, a bell housing coupling, a diesel engine, a one-way valve, a high-pressure filter, a hydraulic joint, a pressure measuring hose, and an electric contact pressure gauge to complete the oil supply to the valve group, the hydraulic cylinder, and the hydraulic motor; The oil return filter is connected to a multi-way reversing valve and an air cooler to complete the oil return from the hydraulic cylinder and the hydraulic motor to the oil tank.

3. The ship grain sampling machine according to claim 2, characterized in that: The hydraulic cylinders include a left crawler extension cylinder, a right crawler extension cylinder, a boom telescopic cylinder, a counterweight cylinder, a sampling unit amplitude adjustment cylinder, and a chassis rotation cylinder. The hydraulic motors include a left crawler travel motor and a right crawler travel motor.

4. The ship grain sampling machine according to claim 1, characterized in that: It also includes an electrical unit for driving the ship grain sampling machine, which includes a control part, a monitoring part and a human-computer interaction part. The control part includes a PLC and a secondary control, the monitoring part includes a camera, a hard disk recorder, and a display, and the human-computer interaction part includes a remote control, a computer, a control cabinet, and a touch screen.

5. The ship grain sampling machine according to claim 1, wherein the sampling method is the following process: (1) The sampling area is set according to the working area of ​​the grain sampling machine on the ship, and the ship is moored and fixed in place as required; (2) The operator of the grain sampling machine on board the ship moves the sampling machine to the front or rear end of the cabin by remote control, controls the extension of the crawler track to increase stability through the remote control, and determines the automatic sampling reference point through the camera; (3) After the reference point of the grain sampling machine is determined, click the LCD touch screen of the control cabinet to select the ship type for sampling. After the ship type is determined, the operator raises or lowers the height of the boom according to the tide conditions; (4) After the ship type and boom height are set, the system generates sampling points based on the ship type data. The sampling points are automatically calculated by the computer; (5) After the sampling rod reaches the designated position, the fan is turned on and the sampling rod begins to descend. During the descent, the grain is pumped into the grain collecting barrel. After the sampling rod is in place, the solenoid valve at the upper end of the sampling rod opens, and all the grain behind the solenoid valve enters the grain collecting barrel. The pneumatic valve of the grain collecting barrel opens, and the grain enters the distribution bin. When there is no grain in the grain collecting barrel, the valve closes. (6) Close the solenoid valve to start stratified sampling, set the solenoid valve closing time, start pumping the lower layer of grain, open the solenoid valve to complete the lower layer sampling, raise the sampling rod to start pumping the middle layer of grain, and so on to complete the upper, middle and lower three layers of sampling; (7) When the sampling rod returns to the uppermost end, the pneumatic gate of the sample divider opens, and the grain enters the dividing bin. The grain is sampled, and 1 / 8 enters the sample box, which is the first sampling sample; The sampling arm automatically moves to the next point and repeats the previous sampling work until all the points set by the system are sampled; (8) After the sampling is completed, the sampling rod returns to its initial position and the arm rotates to its initial position; The sampling rod is equipped with a hydraulic system, and the operator places the sampling rod horizontally; when there is no sampling task, the sampling machine will be driven away from the dock operation area.

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