Intelligent sampling line steel plate collecting device

Abstract

The utility model discloses an intelligent sampling line steel plate collecting device which is characterized in that a sample plate collecting vehicle body, a push-pull part and a baffle are arranged at the tail end of an inspection roller in the extending direction of the inspection roller, the push-pull part is arranged on the sample plate collecting vehicle body, and a collecting groove for storing samples is formed in the top of the sample plate collecting vehicle body; the push-and-pull component pushes the collecting tank to move relative to the sample plate collecting vehicle body in the sample collecting process, the baffle is vertically arranged between the pinch roll and the sample plate collecting vehicle body, and the push-and-pull component pushes the collecting tank to move relative to the sample plate collecting vehicle body in the process that the strip tail of a steel plate output to the pinch roll from the inspection roll crosses the center line of the lower pinch roll of the pinch roll to be lapped on the roll surface. The collecting tank is pushed to drive the steel plates to continuously move until all the steel plates are in a horizontal state, then the collecting tank is controlled to return, the steel plates are stopped from moving under the blocking effect of the baffle till the steel plates are located at the preset positions of the collecting tank or are flush with the stored steel plates, and the push-pull component provides driving force and the baffle provides resistance; and automatic collection of a plurality of samples is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hot rolling, in particular to an intelligent sampling line steel plate collecting device. Background Art

[0002] The hot-rolled intelligent sampling line, located at the tail end of the 1450 hot-rolling production line and arranged parallel to the pallet transport system, is used to sample hot-rolled steel plates. When a hot-rolled coil to be sampled passes through the sampling area, it stops and is transported to the sampling line by the sampling line's coil transporter. Uncoiling, irregularities at the coil head are removed, and the coil's upper and lower surfaces are inspected for quality. Samples are cut, and the removed irregularities and problematic plates are collected by a sample collection device. The uncoiled sections are then re-coiled, bundled, and transported back to the pallet transport system.

[0003] However, due to geographical limitations, the steel plate collection device can only be designed and installed at the tail. Its structure can only effectively transport one steel plate, and the tail of the steel plate is easily overlapped on the pinch roller and needs to be manually dragged to fall. The second steel plate cannot be stacked, and the requirements of automatic collection cannot be met. Utility Model Content

[0004] The utility model aims to provide an intelligent sampling line steel plate collection device, which realizes the automatic collection of multiple steel plates and improves the collection efficiency.

[0005] The collecting box is installed in a direction of sliding the collecting box into the collecting box, and the collecting box is moved along the guide rail to move upwards to remove the collected sample, thereby stopping the collected sample from being collected.

[0006] It also includes a movable groove located at the end of the inspection roller and arranged along the extension direction of the inspection roller. The sample collection vehicle body, the push-pull component and the baffle are located in the movable groove, and the bottom plane of the movable groove is lower than the bottom plane height of the inspection roller.

[0007] It also includes a guardrail structure arranged on both sides of the collection trough in the moving direction of the steel plate. The guardrail structure is detachably connected to the collection trough. The top height of the guardrail structure is greater than the top height of the inspection roller. The collection trough is a grate-type frame collection trough, and a roller is provided at the bottom of the collection trough.

[0008] Wherein, it also includes a pressure detector arranged on the pinch roller, which is used to detect and display the pressing pressure value of the pressing cylinder of the upper pinch roller acting on the pinch roller.

[0009] Wherein, the push-pull component is a push-pull cylinder or a linear screw stepping motor.

[0010] Wherein, the push-pull component is a hydraulic cylinder, the plug diameter of the hydraulic cylinder is greater than or equal to 100 mm, the rod diameter of the hydraulic cylinder is greater than or equal to 70 mm, and the stroke of the hydraulic cylinder is greater than or equal to 1500 mm.

[0011] Among them, it also includes a track arranged in the extension direction of the movable groove and the inspection roller, and the sample collection vehicle body moves in the movable groove through the track. The track is a single-track track or a multi-track track. The sample collection vehicle body changes its relative position by sliding on the track or the sample collection vehicle body changes its relative position by rolling on the track through rollers arranged at the bottom.

[0012] The depth of the movable groove is 0.6-0.8 m, and the bottom surface of the movable groove is parallel to the horizontal plane.

[0013] Among them, it also includes a pneumatic pressing device arranged on the pinch roller frame, which is used for repeatedly pressing down the head of the steel plate that has warped after the head of the steel plate enters the front of the pinch roller and passes through the pinch roller to eliminate the warped state of the steel plate, or for the steel plate whose tail cannot be separated from the pinch roller by moving the sample collecting vehicle body and the collecting trough, after the pressing operation is performed, the sample collecting vehicle body is moved to make the tail of the steel plate separate from the roller surface of the pinch roller.

[0014] Among them, it also includes an inspection plate strap threading groove arranged at the bottom of the collection groove, and the angle between the channel steel of the inspection plate strap threading groove and the end of the collection groove is 20°-30°, which is used to prevent the strap head of the steel plate located in the collection groove from being inserted into the threading groove inspection plate strap threading groove.

[0015] The intelligent sampling line steel plate collection device provided by the embodiment of the utility model has the following advantages compared with the prior art:

[0016] The intelligent sampling line steel plate collecting device provided by the embodiment of the utility model is configured by arranging a sample collecting vehicle body, a push-pull component and a baffle at the end of the inspection roller and along the extension direction of the inspection roller, the push-pull component is arranged on the sample collecting vehicle body, and a collecting trough for storing samples is arranged on the top of the sample collecting vehicle body. The push-pull component pushes the collecting trough to move relative to the sample collecting vehicle body during the sample collection process, and the baffle is vertically arranged between the clamping roller and the sample collecting vehicle body. When the tail of the steel plate output from the inspection roller to the clamping roller passes over the center line of the lower clamping roller of the clamping roller and overlaps the roller surface, the push-pull component pushes the collecting trough to drive the steel plate to continue moving until all the steel plates are in a horizontal state and then stop, and then controls the collection trough to return, and utilizes the blocking effect of the baffle to prevent the steel plate from moving until the steel plate is located at the predetermined position of the collection trough or is flush with the stored steel plate, utilizes the push-pull component to provide driving force, and utilizes the baffle to provide resistance, so as to realize the automatic collection of multiple samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a structural diagram of an embodiment of the intelligent sampling line steel plate collection device provided by the utility model;

[0019] Among them, 10-movable trough, 20-sample collection body, 30-push-pull components, 40-track, 50-baffle, 60-pneumatic downward pressure device, 70-guardrail structure. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of an embodiment of the intelligent sampling line steel plate collection device provided by the utility model.

[0022] In a specific embodiment, the intelligent sampling line steel plate collection device includes a sample collection vehicle body 20, a push-pull component 30 and a baffle 50 located at the end of the inspection roller and arranged along the extension direction of the inspection roller. The push-pull component 30 is arranged on the sample collection vehicle body 20, and a collection trough for storing samples is provided on the top of the sample collection vehicle body 20. The push-pull component 30 is used to push the collection trough to move relative to the sample collection vehicle body 20 during the collection of the sample. The baffle 50 is vertically arranged between the pinching roller and the sample collection vehicle body 20. The push-pull component 30 is used to push the collection trough to drive the steel plate to continue moving when the tail of the steel plate output from the inspection roller to the pinching roller passes over the center line of the lower pinching roller of the pinching roller and overlaps the roller surface until all the steel plates are in a horizontal state and then stop, and then control the collection trough to return, and use the blocking effect of the baffle 50 to prevent the steel plate from moving until the steel plate is located at the predetermined position of the collection trough or is flush with the stored steel plate.

[0023] The sample collecting vehicle body 20, the push-pull component 30 and the baffle 50 are arranged at the end of the inspection roller and along the extension direction of the inspection roller, the push-pull component 30 is arranged on the sample collecting vehicle body 20, and a collecting trough for storing samples is arranged on the top of the sample collecting vehicle body 20. The push-pull component 30 pushes the collecting trough to move relative to the sample collecting vehicle body 20 during the sample collection process, and the baffle 50 is vertically arranged between the pinching roller and the sample collecting vehicle body 20. When the tail of the steel plate output from the inspection roller to the pinching roller passes over the center line of the lower pinching roller of the pinching roller and overlaps the roller surface, the push-pull component 30 pushes the collecting trough to drive the steel plate to continue moving until all the steel plates are in a horizontal state and then stop, and then the collecting trough is controlled to return, and the blocking effect of the baffle 50 is used to prevent the steel plate from moving until the steel plate is located at the predetermined position of the collection trough or is flush with the stored steel plate, and the push-pull component 30 provides driving force and the baffle 50 provides resistance to realize the automatic collection of multiple samples.

[0024] Since the sample collection vehicle body 20 and the collection trough have a certain height, if they are directly set on the ground, the number of samples that can be stored is very small. In order to increase the number of sample stacks, in one embodiment, the intelligent sampling line steel plate collection device also includes a movable trough 10 located at the end of the inspection roller and arranged along the extension direction of the inspection roller. The sample collection vehicle body 20, the push-pull component 30 and the baffle 50 are located in the movable trough 10, and the bottom plane of the movable trough 10 is lower than the height of the bottom plane where the inspection roller is located.

[0025] By providing the movable trough 10 and lowering its height below the bottom plane height where the inspection roller is located, the height of the sample collecting vehicle 20 and the collecting trough is reduced in disguise, thereby increasing the number of samples that can be stacked.

[0026] The size of the movable groove 10 is not limited in this application.

[0027] In order to achieve neat stacking of multiple samples, in one embodiment, the intelligent sampling line steel plate collection device also includes a guardrail structure 70 arranged on both sides of the collection trough in the moving direction of the steel plate. The guardrail structure 70 is detachably connected to the collection trough, and the top height of the guardrail structure 70 is greater than the top height of the inspection roller. The collection trough is a grate frame collection trough, and a roller is provided at the bottom of the collection trough.

[0028] By providing a guardrail structure 70 that is detachably connected to the collecting tank, the side of the sample can be collected, avoiding the possible sliding of the steel plate during the movement of the collecting tank, and improving the stacking effect.

[0029] The shape and quantity of the guardrail structure 70 are not limited in this application.

[0030] In one embodiment, the pinching capacity of the pinch roller is analyzed and calculated as follows:

[0031] When the center of gravity of the thicker inspection plate passes through the lower pinch roller, the belt head naturally sinks and contacts the trolley surface or the inspection plate already on the trolley. The tail of the inspection plate tilts up and the roller can no longer transport the inspection plate. At this time, the upper pinch roller presses down and forms a clamping force with the lower pinch roller. The lower pinch roller is the active roller and continues to transport the slab by the friction between the roller surface and the slab. Verify whether the friction between the roller surface and the slab is sufficient to overcome the horizontal component of the slab head and the trolley under extreme conditions. The force analysis diagram is shown in the figure below. Figure 1 The specific process is as follows:

[0032] From the balance of forces, we can get equations (1) and (2):

[0033] (1);

[0034] (2);

[0035] Where:

[0036] f=N ´ µ ´ , F = N·µ, (3);

[0037] (4)

[0038] Where:

[0039] µ, µ ´ — Check the friction coefficient between the plate, the trolley and the pinch roller, and take µ=0.15 for both.

[0040] R—Radius of the pinch roller pressing cylinder piston, R=25 mm.

[0041] P—Working pressure of the pinch roller pressing cylinder.

[0042] G—Check the limit specification gravity of the plate, the size is 12.7×1300×6000mm.

[0043] α—The angle between the inspection plate and the trolley. According to the structural dimensions, α=7.6°.

[0044] Arranging the above formulas, we can get

[0045]

[0046] Substituting the values, we get:

[0047] P=1MPa.

[0048] Conclusion: Theoretically, when the upper pinch roller pressure cylinder operating pressure is no less than 1MPa, the pinch roller conveying force on the inspection plate is greater than the horizontal component of the contact force between the strip head and the trolley. On-site pressure cylinder pressure can generally reach 4MPa (adjustable), which meets the requirements.

[0049] In order to further improve the operational reliability of the equipment, in one embodiment, the intelligent sampling line steel plate collection device also includes a pressure detector arranged on the pinch roller, which is used to detect and display the downward pressure value of the downward pressure cylinder of the upper pinch roller acting on the pinch roller.

[0050] By setting a pressure detector to detect and display the downward pressure value of the pressing cylinder of the upper pinch roller acting on the pinch roller, in the case of insufficient pressure, the staff can obtain the fault in real time, thereby improving the reliability of equipment operation.

[0051] In the present application, the collecting trough is pushed by a push-pull component 30, and its structure is not limited. The push-pull component 30 is a push-pull cylinder or a linear screw stepper motor, or other components.

[0052] In one embodiment, the push-pull component 30 is a hydraulic cylinder, the plug diameter of the hydraulic cylinder is greater than or equal to 100 mm, the rod diameter of the hydraulic cylinder is greater than or equal to 70 mm, and the stroke of the hydraulic cylinder is greater than or equal to 1500 mm.

[0053] It should be pointed out that the parameter setting of the hydraulic cylinder in this application is not limited to the above-mentioned scheme. The use of this parameter is only to ensure the reliability of its operation. In actual operation, it is not necessarily possible to select it according to needs.

[0054] In one embodiment, the size of the collecting tank is 1500×6000 mm, the stackable height of the collecting tank is about 800 mm, and the size parameters of the collecting tank push-pull cylinder are Φ100 / Φ70×800 mm.

[0055] The present application does not limit the parameter settings of the push-pull component 30. In one embodiment, the parameter settings are as follows:

[0056] The specifications of the push-pull component 30, i.e. the collection tank push-pull cylinder, are determined as follows:

[0057] The function of the collection trough push-pull cylinder is that when the belt tail passes the center line of the lower pinch roller and overlaps the roller surface, the collection trough moves backward under the push of the push-pull cylinder, so that the overlapping belt tail leaves the roller surface, and then the push-pull cylinder retracts and the belt tail is aligned under the action of the baffle 50 below the pinch roller.

[0058] Assume that there are 20 steel plates with dimensions of 12.7×1300×6000mm on the collection trolley, with a total mass of M. The last inspection plate also has dimensions of 12.7×1300×6000mm and a mass of M1. The friction between it and the inspection plate below is f. The mass of the collection trolley is G. The rolling friction between the wheel and the track 40 that the push-pull lever cavity needs to overcome is F. Then:

[0059] ;

[0060] Where:

[0061] g—gravitational acceleration, µ1—coefficient of rolling friction between the wheel and the track 40, µ1=0.15 ,

[0062] µ2—friction coefficient between steel plates, take µ2=0.15; substitute the value to calculate: F=10178N;

[0063] The actual retraction force of the hydraulic cylinder is:

[0064] F 回 =π(R 2 -r 2 )*P;

[0065] Substitute the selected hydraulic cylinder specifications and dimensions to obtain:

[0066] F 回 =56049N;

[0067] Conclusion: The hydraulic cylinder plug diameter and rod diameter selected in the scheme meet the requirements.

[0068] Increasing the stroke of the hydraulic cylinder would theoretically facilitate inspection of plate cutting, but this required excavating a foundation pit behind the collection trolley to allow for the trolley's movement. Ultimately, the hydraulic cylinder stroke was determined to be 1500mm, meaning the hydraulic cylinder specifications were tentatively set at Φ100 / Φ70×1500mm.

[0069] In order to further increase the stroke of the steel plate, the present application increases the sampling of steel plates of different sizes, even the sampling of steel plates of larger sizes, or to enable normal sampling after the above-mentioned hydraulic cylinder fails.

[0070] In one embodiment, the intelligent sampling line steel plate collection device also includes a track 40 arranged in the extension direction of the movable groove 10 and the inspection roller, and the sample collection vehicle body 20 moves in the movable groove 10 through the track 40. The track 40 is a single-track track 40 or a multi-track track 40. The sample collection vehicle body 20 changes its relative position by sliding on the track 40 or the sample collection vehicle body 20 changes its relative position by rolling on the track 40 through rollers arranged at the bottom.

[0071] By setting the track 40, the sample collecting vehicle 20 can be moved in the movable tank 10, thereby improving the efficiency of steel plate sampling.

[0072] The present application does not limit the parameters of the movable trough 10. In one embodiment, the depth of the movable trough 10 is 0.6-0.8 m, and the bottom surface of the movable trough 10 is parallel to the horizontal plane.

[0073] In one embodiment, the movable trough 10 is obtained by removing the original inspection plate collection device on site and excavating the foundation. The excavation depth is 600 mm and the excavation volume is about 8.4 m³. The foundation is constructed and the improved inspection plate collection device is placed.

[0074] Since problems such as steel plate warping may occur during actual operation, the steel plates cannot be output or stacked normally. In order to solve this technical problem, in one embodiment, the intelligent sampling line steel plate collection device also includes a pneumatic pressing device 60 arranged on the pinch roller frame, which is used for the auxiliary guide device when the head of the steel plate enters the front of the pinch roller, and after passing through the pinch roller, repeatedly pressing down the head of the warped steel plate to eliminate the warping state of the steel plate, or for the steel plate whose tail cannot be separated from the pinch roller by moving the sample collection vehicle body 20 and the collection trough, after pressing down, move the sample collection vehicle body 20 to make the tail of the steel plate separate from the roller surface of the pinch roller.

[0075] Pneumatic hold-down devices are rarely used in general. They are used in situations where the head of a high-strength (or thick-gauge) steel plate is warped. Once the head of the plate enters the auxiliary guide device in front of the pinch rollers, the pinch rollers press down. Once the head of the plate passes through the pinch rollers, the pneumatic hold-down device is activated to directly press the plate, then lift it up and press it down again, repeating this three times to assist in pressing the plate. In the second case, if the tail of the plate cannot be freed from the pinch rollers by moving the collection gantry, the pneumatic hold-down device needs to be activated to press down, while the trolley moves forward. This will allow the tail of the plate to separate from the pinch rollers, allowing the stack to be collected (this situation is currently rare and can be solved by using a trolley).

[0076] The present application does not limit the structure of the pneumatic pressing device, nor is it limited to using a pneumatic pressing device for the pressing operation. The pressing operation can also be performed on all steel plates, or other equipment can be used for the pressing operation.

[0077] In the prior art, when collecting the second steel plate, the tail portion stays on the transition guide plate due to the friction force. This is achieved in the present application by setting a collection tank push-pull cylinder, which pushes the collection tank to move back and forth.

[0078] The working principle of this application is as follows:

[0079] After the sheared scrap steel plates are transported by the conveyor rollers through the pinch rollers, the upper rollers press down. Powered by the upper and lower pinch rollers, combined with the forward force of the conveyor rollers, the plates continue to advance, their heads and fronts falling into the collection trough on the collection platform. The collection trough then moves forward, freeing the tail of the plates from the pinch rollers and allowing the entire head of the plates to fall into the collection trough. At this point, the collection trough moves backward, causing the tail of the plates to strike the baffle 50 mounted below the pinch rollers, neatly stacking the plates. This repetitive process can collect up to 30 plates. Once completed, the plates are hoisted out using a wire rope.

[0080] When encountering high-strength (or thick-gauge) steel plates with high warpage, the head of the steel plate enters the auxiliary guide device in front of the pinch rollers, the pinch rollers press down, and after the head of the steel plate passes through the pinch rollers, the pneumatic pressing device is activated to directly press the steel plate, then lift it up, and then press it down again, repeating this three times to assist in pressing the steel plate. The second situation is that the tail of the steel plate cannot be separated from the pinch rollers by moving the collection platform. In this case, the pneumatic pressing device needs to be activated to press down, and the trolley moves forward at the same time. In this way, the tail of the steel plate will be separated from the roller surface of the pinch rollers, thereby achieving stacking and collection.

[0081] In order to further improve the operational reliability of the steel plate, in one embodiment, the intelligent sampling line steel plate collection device also includes an inspection plate strap threading groove arranged at the bottom of the collection trough, and the angle between the channel steel of the inspection plate strap threading groove and the end of the collection trough is 20°-30°, which is used to prevent the strap head of the steel plate located in the collection trough from being inserted into the threading groove inspection plate strap threading groove.

[0082] In this application, there is no limitation on the angle between the channel steel of the inspection plate strapping groove and the end of the collection groove. The channel steel can be moved forward at the left end or the right end in the extension direction, and the inspection plate strapping groove can be made of channel steel or other materials.

[0083] The above technical solution has a simple and reliable structure and low additional cost. It solves the root cause of equipment problems by adding simple and practical collection. It reduces the risk of production stoppage, reduces safety risks and improves production efficiency while maintaining the original equipment functions. It is practical and easy to operate and is effective in solving technical problems.

[0084] The above-mentioned intelligent sampling line steel plate collection device includes a collection trolley and a pneumatic pressing device, which can be implemented during the annual maintenance time; the height difference between the collection trolley and the pinch roller is analyzed theoretically; the excavation depth, width and excavation volume of the collection device foundation are determined; the track 40, push-pull cylinder and stand, baffle 50, collection trolley, hydraulic valve station and hydraulic valve and pneumatic pressing device are installed in sequence, and the equipment installation accuracy is required to be met.

[0085] To sum up, the intelligent sampling line steel plate collection device provided by the embodiment of the present invention is configured by arranging a sample collecting vehicle body, a push-pull component and a baffle at the end of the inspection roller and along the extension direction of the inspection roller, the push-pull component is arranged on the sample collecting vehicle body, and a collection trough for storing samples is arranged on the top of the sample collecting vehicle body. The push-pull component pushes the collection trough to move relative to the sample collecting vehicle body during the sample collection process, and the baffle is vertically arranged between the clamping roller and the sample collecting vehicle body. When the tail of the steel plate output from the inspection roller to the clamping roller passes over the center line of the lower clamping roller of the clamping roller and overlaps the roller surface, the push-pull component pushes the collection trough to drive the steel plate to continue moving until all the steel plates are in a horizontal state and then stop, and then controls the collection trough to return, and uses the blocking effect of the baffle to prevent the steel plate from moving until the steel plate is located at the predetermined position of the collection trough or is flush with the stored steel plate, and uses the push-pull component to provide driving force and the baffle to provide resistance to realize automatic collection of multiple samples.

[0086] The above is a detailed introduction to the intelligent sampling line steel plate collection device provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An intelligent sampling line steel plate collection device, characterized in that: The conveyor belt conveyor is a device for conveying a sample of the sample to be collected by the conveyor belt conveyor and a conveyor belt conveyor for conveying a sample of the sample to be collected.

2. The intelligent sampling line steel plate collection device according to claim 1, characterized in that: It also includes a movable groove located at the end of the inspection roller and arranged along the extension direction of the inspection roller. The sample collection vehicle body, the push-pull component and the baffle are located in the movable groove, and the bottom plane of the movable groove is lower than the height of the bottom plane where the inspection roller is located.

3. The intelligent sampling line steel plate collection device according to claim 2, characterized in that: It also includes a guardrail structure arranged on both sides of the collection trough in the moving direction of the steel plate, the guardrail structure is detachably connected to the collection trough, the top height of the guardrail structure is greater than the top height of the inspection roller, the collection trough is a grate-type frame collection trough, and a roller is provided at the bottom of the collection trough.

4. The intelligent sampling line steel plate collection device according to claim 1, characterized in that: It also includes a pressure detector arranged on the pinch roller, which is used to detect and display the pressing pressure value of the pressing cylinder of the upper pinch roller acting on the pinch roller.

5. The intelligent sampling line steel plate collection device according to claim 1, characterized in that: The push-pull component is a push-pull cylinder or a linear screw stepping motor.

6. The intelligent sampling line steel plate collection device according to claim 5, characterized in that: The push-pull component is a hydraulic cylinder, the plug diameter of the hydraulic cylinder is greater than or equal to 100 mm, the rod diameter of the hydraulic cylinder is greater than or equal to 70 mm, and the stroke of the hydraulic cylinder is greater than or equal to 1500 mm.

7. The intelligent sampling line steel plate collection device according to claim 6, characterized in that: It also includes a track arranged in the extension direction of the movable groove and the inspection roller, and the sample collection vehicle body moves in the movable groove through the track. The track is a single-track track or a multi-track track. The sample collection vehicle body changes its relative position by sliding on the track or the sample collection vehicle body changes its relative position by rolling on the track through rollers arranged at the bottom.

8. The intelligent sampling line steel plate collection device according to claim 7, characterized in that: The depth of the movable groove is 0.6-0.8m, and the bottom surface of the movable groove is parallel to the horizontal plane.

9. The intelligent sampling line steel plate collection device according to claim 1, characterized in that: It also includes a pneumatic pressing device arranged on the pinch roller frame, which is used for repeatedly pressing down the head of the steel plate that has warped after the head of the steel plate enters the auxiliary guide device in front of the pinch roller and passes through the pinch roller to eliminate the warped state of the steel plate, or for the steel plate whose tail cannot be separated from the pinch roller by moving the sample collecting vehicle body and the collecting trough, after the pressing operation is performed, the sample collecting vehicle body is moved to make the tail of the steel plate separate from the roller surface of the pinch roller.

10. The intelligent sampling line steel plate collection device according to any one of claims 1 to 9, characterized in that: It also includes an inspection plate strap threading groove arranged at the bottom of the collection groove, and the angle between the channel steel of the inspection plate strap threading groove and the end of the collection groove is 20°-30°, which is used to prevent the strap head of the steel plate located in the collection groove from being inserted into the threading groove inspection plate strap threading groove.

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