A steel structure pretreatment device for municipal highway engineering

Abstract

The present invention provides a steel structure pretreatment device for municipal highway engineering, comprising a transfer part installed in the shot blasting machine; a classification part for classifying the steel shots in the transfer part; a weighing part for weight detection of the steel shots in the classification box; and a processing part for analyzing the weighing data of the steel shots; by setting a method for conveying steel shots to the classification box with equal weight, a pushing component is used to provide a fixed pushing force for the classification box, and according to the moving distance ratio of the two classification boxes, the ratio of large-size steel shots to small-size steel shots can be measured, thereby determining whether the steel shot grading is normal, and the moving distance ratio of the classification box is not affected by the external environment, but is only related to the weight ratio of the steel shots. Therefore, the detection work can be carried out simultaneously during the working process, which solves the problem that the vibration generated by the shot blasting machine during operation makes it impossible to accurately calculate the steel shot grading in real time, and there is no need to stop the machine for operation, which greatly improves the work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel material pretreatment, in particular to a steel structure pretreatment device for municipal highway engineering. Background Art

[0002] Municipal engineering refers to municipal infrastructure construction projects. In my country, municipal infrastructure refers to various buildings, structures, equipment, etc. that are set up within the planning and construction scope of urban areas, towns (villages), and provide paid or free public products and services to residents based on government responsibilities and obligations. These also include sidewalk railings set up beside the road. Most of these railings are steel structures. In order to remove rust on the steel, H-shaped steel needs to be shot blasted beforehand. After shot blasting, the surface of the steel is cleaned evenly and processed with uniform roughness, which can improve the coating adhesion during subsequent H-shaped steel painting.

[0003] Chinese patent CN 114473878 A discloses an H-beam shot blasting and rust removal system, comprising a shot blasting device, a conveying device, and a detection device, all of which are connected to a control host. The shot blasting device comprises a shot blasting chamber with an inlet and outlet and an even number of shot blasting machines located in the chamber. The system also includes a shot recovery device, which comprises a longitudinal screw conveyor, a transverse screw conveyor, an elevator, and a sand and shot separator connected in sequence. The sand and shot separator is connected to a shot chute via a shot supply gate valve. The shot chute is connected to each shot blasting machine, and the shot supply gate valve is connected to the control host. The present invention can instantly recover and screen the spent shot during the shot blasting and rust removal process of H-beam workpieces for recycling, thereby reducing the consumption of shot during the shot blasting process and improving the utilization rate of shot.

[0004] However, there are still some problems in this technical solution. The particle size of the steel shot in the graded shot blasting machine is directly related to its cleaning effect. When the shot blasting machine is working, each steel shot is constantly worn and reduced in size. The composition of the steel shot particle size of the entire system will gradually become smaller, resulting in excessive changes in the gradation of the steel shot, which affects the pretreatment effect of the steel. Therefore, it is necessary to frequently check the mixing ratio of the steel shot, replenish the steel shot in time, and ensure that the gradation of the steel shot remains unchanged, so as to ensure that the shot blasting cleaning efficiency does not decrease and the surface quality of the steel is stable.

[0005] When the existing shot blasting machine is working, although the thrown steel shots can be collected and sent to the hopper for recycling, the movement of the steel shots is always changing during this process, and it is difficult to detect the gradation of the steel shots in real time. In addition, the shot blasting machine generates vibrations during operation, which greatly interferes with the use of devices such as weighing instruments. Therefore, in actual production, the method of screening and inspecting the steel shots after shutdown is often used to determine the steel shot mixing ratio. This is not only time-consuming and labor-intensive, but also greatly delays the progress of H-beam pretreatment. In addition, in the method of regularly or irregularly inspecting the steel shots, there is a time interval between the two inspections. If the gradation of the steel shots is out of tolerance during this interval, the cleaning effect of the steel is affected, and repeated work is required, further delaying the progress of H-beam pretreatment. The above technical solutions have not effectively solved these problems. Summary of the Invention

[0006] The purpose of the present invention is to address the shortcomings of the existing technology and provide a steel structure pretreatment device for municipal highway engineering. By setting a transfer part, the recovered steel shots are intercepted and the steel shots are screened and weight detected. After the steel shots of a fixed weight are screened, a fixed driving force is provided. The steel shot gradation is determined by detecting the moving distance ratio, so that the steel shot gradation can be detected in real time during the operation of the shot blasting machine, and the detection results are accurate and the work efficiency is high.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A steel structure pretreatment device for municipal highway engineering includes a shot blasting machine, wherein the shot blasting machine is provided with a hopper and a steel shot recovery system, wherein the hopper is used to store steel shots, and the steel shot recovery system is used to recover the thrown steel shots into the hopper, and further includes:

[0009] A transfer part installed in the shot blasting machine, through which the steel shots collected by the steel shot recovery system enter the hopper, and the transfer part includes a transfer box for receiving the steel shots;

[0010] a classification section for classifying the steel shots in the transfer section, the classification section comprising a screening assembly for screening the steel shots and a plurality of classification boxes for classifying and placing the screened steel shots;

[0011] a weighing unit for detecting the weight of the steel shots in the classification box; and

[0012] The processing unit analyzes the steel shot weighing data, and the processing unit includes a console and an alarm component. The console is used to display the steel shot gradation analyzed according to the weighing data, and the alarm component is used to warn when the steel shot gradation is abnormal.

[0013] Specifically, the shot blasting machine is provided with a conveyor belt for conveying steel materials and a shot blasting wheel for blasting the steel materials, and steel shots are provided to the shot blasting wheel through a hopper; the steel shot recovery system can adopt a screw conveyor and an elevator device for conveying the steel shots thrown by the shot blasting wheel into the hopper; two classification boxes can be provided, one for receiving steel shots of normal size and the other for receiving steel shots of undersized size due to wear, and more classification boxes can be provided according to the specific working environment;

[0014] During the working process, the steel shot recovery system will first transfer the recovered steel shots to the transfer box, and the transfer box will then transfer the steel shots in a quantitative manner to the classification box for classification. Since the total amount of steel shots in the two classification boxes is fixed, the weighing department only needs to measure the weight of the two classification boxes respectively to obtain the gradation of the steel shots; the weighing department will send the test results to the processing department for analysis. When the gradation of the steel shots exceeds the normal value, the alarm component will issue a warning to remind the staff to replace and replenish the steel shots in time.

[0015] As another preferred embodiment, the screening assembly includes:

[0016] multiple groups of screening rollers placed in an inclined shape, each of the screening rollers comprising two roller shafts, with different spacings between the ends of the two roller shafts, and the screening rollers being located above the classification box; and

[0017] A discharge pipe is connected to the transfer box, and the discharge pipe is located above one end of the screening roller with a narrow spacing.

[0018] Specifically, one end of the screening roller with a narrow spacing is higher than the other end with a wide spacing, and a guide plate for guiding the steel shot is provided on the outside of the screening roller;

[0019] The steel shots in the transfer box fall between the two rollers through the discharge pipe and roll along the rollers. As the steel shots roll, the distance between the two rollers gradually increases. Therefore, steel shots of different sizes fall into the two classification boxes respectively, realizing the function of screening and classified storage of steel shots.

[0020] As another preferred embodiment, the transfer section further comprises an equal weight component for feeding steel shots into the classification section at equal weights, and the equal weight component comprises:

[0021] A support installed inside the shot blasting machine;

[0022] A lifting seat is slidably mounted inside the support; the classification box is movably mounted inside the lifting seat; and

[0023] A positioning component is provided on the support and is used to clamp the lifting seat within a fixed weight range.

[0024] Specifically, when the total amount of steel shots in the two classification boxes reaches a fixed amount, the mass of the lifting seat increases, squeezing the positioning assembly open and moving it downward.

[0025] As another preferred embodiment, the weighing unit includes:

[0026] a pushing component for pushing the classification box to slide in the lifting seat, wherein the pushing component provides a fixed pushing force; and

[0027] A detection component is arranged inside the lifting seat and is used to detect the moving distance of each classification box.

[0028] Specifically, the detection component can use a pressure sensing device, such as a plurality of pressure sensors evenly spaced on the Y axis. The detection component can also use a height sensor or a displacement sensor to detect the height of the classification box sliding in the lifting seat;

[0029] When testing the steel shots in the classification boxes, the pushing component pushes the two classification boxes to move at the same time with a fixed thrust. According to the weight of the steel shots in the classification boxes, the classification boxes will move up by different distances. By testing the upward distance of the classification boxes, the weight of the two classification boxes can be obtained, and then the number of steel shots in the two classification boxes can be measured, thereby determining the grading of the steel shots.

[0030] As another preferred embodiment, a pulley assembly is provided on the outer wall of the classification box.

[0031] Specifically, a pulley assembly is provided to reduce the resistance of the classification box when it moves up and down in the lifting seat.

[0032] As another preferred embodiment, the pushing component includes:

[0033] A striking plate slidably mounted inside the support for striking the classification box; and

[0034] A lever installed inside the support is rotatably mounted, with two ends of the lever respectively located below the lifting seat and the collision plate.

[0035] Specifically, the collision plate can hit two classification boxes at the same time; the classification box is provided with a convex plate extending to the outside of the support, one end of the lever is aligned with the convex plate, and the other end of the lever extends to the bottom of the support. Through this arrangement, the support hits the lever after moving downward, and the lever then pushes the two classification boxes to move upward inside the support at the same time;

[0036] Since the lifting seat receives steel shots of a fixed total weight, the impact force exerted on the two classification boxes by the lever after the lifting seat moves downward is also fixed, and the two classification boxes begin to move upward under the action of the fixed impact force;

[0037] When the gradation of the steel shot is within the normal range, the weight ratio of the steel shot in the two classification boxes is also kept within the normal range, and the height ratio of the two classification boxes when moved upward under the push of the fixed impact force is also within the normal range;

[0038] When the gradation of steel shot exceeds the normal range, the weight of steel shot in the two classification boxes exceeds the normal range, which will cause the classification box receiving normal steel shot to be too light and the other classification box to be too heavy. Under the push of the fixed impact force, the two classification boxes move up too high and too low respectively, and the upward height ratio exceeds the normal range;

[0039] Through this setting, the shot blasting machine generates vibration during operation, causing impact on its internal components. Since the force exerted by the vibration of the shot blasting machine on the two lifting boxes is the same, the impact force exerted by the support on the two lifting boxes is also the same. Therefore, the upward height ratio of the lifting boxes is only related to the weight of the steel shots therein. The grading of the steel shots can be accurately determined by simply detecting the upward height ratio of the two classification boxes, which solves the problem of difficult and accurate real-time measurement of the steel shot grading due to the vibration generated by the shot blasting machine during operation.

[0040] As another preferred embodiment, the positioning component includes:

[0041] A lug plate provided on the lifting seat;

[0042] A card plate is movably installed inside the support and blocked below the ear plate. A spring 1 is installed on the card plate. The card plate is a one-way rotating structure, and a slope is provided on the top of the card plate.

[0043] As another preferred embodiment, the positioning component further includes:

[0044] An outer slide plate movably inserted into the support, wherein the spring 1 and the clamping plate are both mounted on the outer slide plate;

[0045] An inner slide movably plugged into the support and inserted into the outer slide;

[0046] A limiting block provided on the inner slide;

[0047] A second spring installed between the limit block and the outer slide;

[0048] A baffle movably inserted in the support for blocking the limit block;

[0049] a push plate provided on the outer slide plate for pushing the baffle; and

[0050] A positioning plate is arranged on the inner slide plate and inserted into the interior of the lifting seat.

[0051] Specifically, a sliding groove corresponding to the inner sliding plate is provided inside the outer sliding plate, and a gap is left between the bottom of the sliding groove and the inner sliding plate, a slope corresponding to the limit block is provided on the baffle, a return spring is installed on the baffle, a triangular plate for squeezing the baffle to move is provided on the push plate, and an inner groove corresponding to the triangular plate is provided inside the baffle; a positioning groove corresponding to the positioning plate is provided on the side wall of the lifting seat, and the height of the positioning groove is greater than the thickness of the positioning plate, so that the positioning plate can move up and down in the positioning groove; a supporting spring is provided at the bottom of the lifting seat;

[0052] In the initial state, when there is no steel shot in the classification box, the lifting seat remains stable under the push of the support spring, and the ear plate is located above the one-way plate; the classification box does not contact the lever, and the positioning plate is inserted into the positioning slot to prevent the classification box from contacting the lever.

[0053] As another preferred embodiment, the transfer unit further includes:

[0054] A support platform fixedly installed inside the shot blasting machine, wherein the support platform is provided with a through slot for feeding steel shots into the hopper;

[0055] Rotating a rotating frame installed inside the support platform, the supports are evenly distributed on the rotating frame;

[0056] A feeding port provided at the bottom of the classification box; and

[0057] A sealing plate is used to seal the discharge port.

[0058] Specifically, the screening assembly and the transfer box are both installed on the support platform, the screening assembly is not in direct contact with the support and the rotating frame, and the support platform is located above the hopper.

[0059] When a certain amount of steel shots are collected in the two classification seats, the lifting seat moves down, and the rotating frame is started to rotate, so that the support filled with steel shots is moved away from under the screening component, and the other empty classification seat moves to the bottom of the screening component to continue collecting steel shots;

[0060] After the classification box filled with steel shots is tested for gradation, the sealing plate is opened and the steel shots in the classification box enter the hopper through the through slot. This allows the real-time detection of the steel shot gradation to be completed without affecting the real-time replenishment of steel shots to the hopper during the shot blasting process. There is no need to stop the machine to detect the steel shot gradation, which greatly improves work efficiency.

[0061] As another preferred embodiment, the transfer unit further includes:

[0062] A switch 1 provided inside the support platform for controlling the start-up of the rotating frame and the opening and closing of the transfer box; and

[0063] A second switch is provided on the inner wall of the support platform for opening the discharge port.

[0064] Specifically, the switch 1 can be a touch-type switch, and the switch 2 can be a pressure plate structure with a slope. The sealing plate is rotatably installed inside the classification box, and a reset torsion spring is installed on the sealing plate.

[0065] After the support filled with steel shots is rotated from under the screening assembly and aligned with the through slot, and another empty classification seat is rotated to under the screening assembly, the transfer box continues to transmit steel shots to the empty classification box, the sealing plate is squeezed out by the second switch, and is squeezed by the second switch to rotate, so that the discharge port is opened, and the steel shots in the classification box fall into the hopper, providing steel shots for the shot blasting work of the hopper, so that the recycling work can be realized.

[0066] The beneficial effects of the present invention are:

[0067] (1) The present invention sets a transfer part on the hopper to intercept the steel shots before they are returned to the hopper, and screens and weights the steel shots. After the steel shot gradation is measured, the steel shots are sent into the hopper. This realizes the function of real-time detection of the steel shot gradation during the shot blasting process, so that when the steel shot gradation is abnormal, an alarm is issued in time, thereby improving the working efficiency of steel shot blasting.

[0068] (2) The present invention provides a method for conveying steel shots of equal weight to the classification box, and uses a pushing component to provide a fixed pushing force for the classification box. According to the moving distance ratio of the two classification boxes, the ratio of large-sized steel shots to small-sized steel shots can be measured, and then whether the steel shot grading is normal can be determined. Moreover, the moving distance ratio of the classification box is not affected by the external environment and is only related to the weight ratio of the steel shots. Therefore, the detection work can be carried out simultaneously during the working process, which solves the problem that the vibration generated by the shot blasting machine during the working process makes it impossible to accurately calculate the steel shot grading in real time. There is no need to stop the machine for operation, which greatly improves the working efficiency.

[0069] (3) The present invention provides power for the classification box by setting a lever and utilizing a lifting seat that moves downward after receiving a fixed weight of steel shot. No additional electric drive device is required. The invention has a simple structure, low operating cost, and is energy-saving and environmentally friendly.

[0070] (4) The present invention sets a positioning component. The lifting seat will not contact the lever before receiving the steel shot of a fixed weight. After the weight of the steel shot reaches the set value, the lifting seat will move down and drive the classification box to move through the lever. The structure is simple, the operation is stable, the operation is automatic, and the use is convenient.

[0071] (5) The present invention arranges a plurality of supports on a rotating rotating frame, and the steel shots that have completed the inspection are removed from under the screening assembly and transported to the hopper. At the same time, the empty classification box is moved to under the screening assembly to continue receiving and screening the steel shots, thereby reducing the inspection gap between the two batches of steel shots and improving work efficiency.

[0072] In summary, the present invention has the advantages of recovering steel shots during operation and detecting gradation in real time, having a simple structure, low use cost, and high working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0074] Figure 2 It is a schematic diagram of the hopper and transfer unit;

[0075] Figure 3 This is a schematic diagram of the transfer department and classification department;

[0076] Figure 4 This is a schematic diagram of the coordination between the support and the classification seat;

[0077] Figure 5 Exploded view of the sorting box and screening components;

[0078] Figure 6 Partial half-section diagram of the installation structure for equal weight components;

[0079] Figure 7 Explode the diagram to locate the component;

[0080] Figure 8 A half-section view of the positioning component;

[0081] Figure 9 This is a schematic diagram of the lifting seat;

[0082] Figure 10 Explode the diagram for the classification box and switch 2;

[0083] Figure 11 Schematic diagram of the support platform.

[0084] Reference numerals: 1- shot blasting machine; 11- hopper; 12- steel shot recovery system; 13- conveyor belt; 14- shot blasting wheel;

[0085] 2-Transfer unit; 21-Transfer box; 22-Isoweight assembly; 221-Support; 222-Lifting seat; 223-Positioning assembly; 2231-Ear plate; 2232-Card plate; 2233-Spring 1; 2234-Outer slide; 2235-Inner slide; 22351-Lifting block; 2236-Spring 2; 2237-Baffle; 2238-Push plate; 2239-Positioning plate; 23-Support platform; 24-Through slot; 25-Rotating frame; 26-Feeding port; 27-Closing plate; 28-Switch 1; 29-Switch 2;

[0086] 3-classification unit; 31-screening assembly; 311-screening roller; 312-feeding pipe; 313-guide plate; 32-classification box; 321-pulley assembly;

[0087] 4-weighing unit; 41-pushing assembly; 411-impact plate; 412-lever; 42-detection assembly;

[0088] 5-processing unit; 51-control console; 52-alarm component. DETAILED DESCRIPTION

[0089] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0090] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0091] Example 1

[0092] like Figure 1-2 As shown, this embodiment provides a steel structure pretreatment device for municipal highway engineering, including a shot blasting machine 1, wherein the shot blasting machine 1 is provided with a hopper 11 and a steel shot recovery system 12, wherein the hopper 11 is used to store steel shots, and the steel shot recovery system 12 is used to recover the thrown steel shots into the hopper 11, and further comprising:

[0093] A transfer part 2 installed in the shot blasting machine 1, through which the steel shots collected by the steel shot recovery system 12 enter the hopper 11, and the transfer part 2 includes a transfer box 21 for receiving the steel shots;

[0094] a classification section 3 for classifying the steel shots in the transfer section 2, the classification section 3 comprising a screening assembly 31 for screening the steel shots and a plurality of classification boxes 32 for classifying and placing the screened steel shots;

[0095] a weighing unit 4 for detecting the weight of the steel shots in the classification box 32; and

[0096] The processing unit 5 analyzes the steel shot weighing data, and the processing unit 5 includes a console 51 and an alarm component 52. The console 51 is used to display the steel shot gradation analyzed based on the weighing data, and the alarm component 52 is used to warn when the steel shot gradation is abnormal.

[0097] Specifically, the shot blasting machine 1 is provided with a conveyor belt 13 for conveying steel materials and a shot blasting wheel 14 for blasting the steel materials. Steel shots are supplied to the shot blasting wheel 14 through a hopper 11. The shot recovery system 12 can adopt a screw conveyor and an elevator device for conveying the steel shots thrown by the shot blasting wheel 14 into the hopper 11. Two classification boxes 32 can be provided, respectively for receiving steel shots of normal size and steel shots of undersized size due to wear. More classification boxes 32 can also be provided according to the specific working environment.

[0098] During the working process, the steel shot recovery system 12 first transfers the recovered steel shots to the transfer box 21, and the transfer box 21 then transfers the steel shots in a quantitative manner to the classification box 32 for classification. Since the total amount of steel shots in the two classification boxes 32 is fixed, the weighing unit 4 only needs to measure the weight of the two classification boxes 32 respectively to obtain the gradation of the steel shots; the weighing unit 4 sends the test results to the processing unit 5 for analysis. When the gradation of the steel shots exceeds the normal value, the alarm component 52 issues a warning to remind the staff to replace and replenish the steel shots in time.

[0099] like Figure 3-5 As shown, further, the screening assembly 31 includes:

[0100] Multiple groups of screening rollers 311 placed in an inclined shape, each of the screening rollers 311 including two roller shafts with different spacings between the ends of the two roller shafts, and the screening rollers 311 are located above the classification box 32; and

[0101] A discharge pipe 312 is connected to the transfer box 21 and is located above one end of the screening rollers 311 with a narrow spacing.

[0102] Specifically, the end of the screening roller 311 with a narrow spacing is higher than the end of the screening roller 311 with a wide spacing, and a guide plate 313 for guiding the steel shot is provided on the outside of the screening roller 311;

[0103] The steel shots in the transfer box 21 fall between the two rollers through the discharge pipe 312 and roll along the rollers. As the steel shots roll, the distance between the two rollers gradually increases. Therefore, steel shots of different sizes fall into the two classification boxes 32 respectively, realizing the function of screening and classified storage of the steel shots.

[0104] like Figure 4-5 As shown, further, the transfer part 2 also includes an equal weight component 22 for feeding steel shots into the classification part 3 with equal weight, and the equal weight component 22 includes:

[0105] A support 221 installed inside the shot blasting machine 1;

[0106] A lifting seat 222 is slidably mounted inside the support 221; the classification box 32 is movably mounted inside the lifting seat 222; and

[0107] A positioning assembly 223 is provided on the support 221 for clamping the lifting seat 222 within a fixed weight range.

[0108] Specifically, when the total amount of steel shots in the two classification boxes 32 reaches a fixed amount, the mass of the lifting seat 222 increases, pushing the positioning assembly 223 open and moving it downward.

[0109] like Figure 4-7 As shown, further, the weighing unit 4 includes:

[0110] a pushing assembly 41 for pushing the classification box 32 to slide in the lifting seat 222 , wherein the pushing assembly 41 provides a fixed pushing force; and

[0111] A detection component 42 is provided inside the lifting seat 222 for detecting the moving distance of each of the classification boxes 32 .

[0112] Specifically, the detection component 42 may be a pressure sensing device, such as a plurality of pressure sensors evenly spaced on the Y axis. The detection component 42 may also be a height sensor or a displacement sensor to detect the height of the classification box 32 sliding in the lifting seat 222.

[0113] When testing the steel shots in the classification box 32, the pushing component 41 pushes the two classification boxes 32 to move at the same time with a fixed thrust. According to the weight of the steel shots in the classification box 32, the classification box 32 will move up by different distances. By testing the upward movement distance of the classification box 32, the weight of the two classification boxes 32 can be obtained, and then the number of steel shots in the two classification boxes 32 can be measured, thereby determining the grading of the steel shots.

[0114] like Figure 10 As shown, further, a pulley assembly 321 is provided on the outer wall of the classification box 32 .

[0115] Specifically, the pulley assembly 321 is provided to reduce the resistance of the classification box 32 when it moves up and down in the lifting seat 222 .

[0116] like Figure 4-6 As shown, further, the pushing component 41 includes:

[0117] A striker plate 411 slidably mounted inside the support 221 for striking the classification box 32 ; and

[0118] The lever 412 installed inside the support 221 is rotated, and both ends of the lever 412 are respectively located below the lifting seat 222 and the collision plate 411.

[0119] Specifically, the collision plate 411 can collide with the two classification boxes 32 at the same time; the classification box 32 is provided with a convex plate extending to the outside of the support 221, one end of the lever 412 is aligned with the convex plate, and the other end of the lever 412 extends to the bottom of the support 221. With this arrangement, the support 221 hits the lever 412 after moving downward, and the lever 412 then pushes the two classification boxes 32 to move upward inside the support 221 at the same time;

[0120] Since the lifting seat 222 receives steel shots of a fixed total weight, the impact force exerted on the two classification boxes 32 by the lever 412 after the lifting seat 222 moves downward is also fixed, and the two classification boxes 32 begin to move upward under the action of the fixed impact force.

[0121] When the gradation of the steel shot is within the normal range, the weight ratio of the steel shot in the two classification boxes 32 is also kept within the normal range, and the height ratio of the two classification boxes 32 when moved upward under the push of the fixed impact force is also within the normal range;

[0122] When the gradation of the steel shot exceeds the normal range, the weight of the steel shot in the two classification boxes 32 exceeds the normal range, which will cause the classification box 32 receiving the normal steel shot to be too light, and the other classification box 32 to be too heavy. Under the push of the fixed impact force, the two classification boxes 32 move up to too high and too low respectively, and the upward height ratio exceeds the normal range;

[0123] Through this arrangement, the shot blasting machine 1 generates vibrations during operation, causing impacts on the components inside it. Since the force exerted by the vibration of the shot blasting machine 1 on the two lifting boxes is the same, the impact force exerted by the support 221 on the two lifting boxes is also the same. Therefore, the upward height ratio of the lifting boxes is only related to the weight of the steel shots therein. The grading of the steel shots can be accurately determined by simply detecting the upward height ratio of the two classification boxes 32, which solves the problem that the grading of the steel shots is difficult to accurately measure in real time due to the vibration generated by the shot blasting machine 1 during operation.

[0124] Furthermore, in order to improve the accuracy of the steel shot gradation measurement and avoid the problem of uneven mixing of steel shots, which leads to large errors in a single measurement, a method of multiple measurements and then taking the average value can be used to measure a more accurate steel shot gradation. The calculation method of the average value of multiple measurements can be directly obtained through the existing calculation program.

[0125] like Figure 5-9 As shown, further, the positioning component 223 includes:

[0126] A lug plate 2231 provided on the lifting seat 222;

[0127] A card plate 2232 is movably installed inside the support 221 and blocked below the ear plate 2231. A spring 2233 is installed on the card plate 2232. The card plate 2232 is a one-way rotating structure, and a slope is provided on the top of the card plate 2232.

[0128] like Figure 7-8 As shown, further, the positioning component 223 also includes:

[0129] An outer slide plate 2234 movably inserted into the support 221 , wherein the spring 1 2233 and the clamping plate 2232 are both mounted on the outer slide plate 2234 ;

[0130] An inner slide 2235 movably inserted into the support 221 and inserted into the outer slide 2234;

[0131] A limiting block 22351 provided on the inner slide plate 2235;

[0132] A second spring 2236 installed between the limiting block 22351 and the outer slide plate 2234;

[0133] A baffle 2237 movably inserted into the support 221 for blocking the limiting block 22351;

[0134] A push plate 2238 provided on the outer slide plate 2234 for pushing the baffle 2237; and

[0135] A positioning plate 2239 is provided on the inner slide plate 2235 and inserted into the interior of the lifting seat 222 .

[0136] Specifically, the outer slide plate 2234 is provided with a sliding groove corresponding to the inner slide plate 2235, and a gap is left between the bottom of the sliding groove and the inner slide plate 2235. The baffle plate 2237 is provided with a slope corresponding to the limit block 22351, and a return spring is installed on the baffle plate 2237. The push plate 2238 is provided with a triangular plate for squeezing the baffle plate 2237 to move. The baffle plate 2237 is provided with an inner groove corresponding to the triangular plate; the side wall of the lifting seat 222 is provided with a positioning groove corresponding to the positioning plate 2239, and the height of the positioning groove is greater than the thickness of the positioning plate 2239, so that the positioning plate 2239 can move up and down in the positioning groove; the bottom of the lifting seat 222 is provided with a supporting spring, which is blocked in the accompanying drawings and is not shown;

[0137] In the initial state, when there are no steel shots in the classification box 32, the lifting seat 222 remains stable under the push of the support spring, and the ear plate 2231 is located above the one-way plate; the classification box 32 does not contact the lever 412, and the positioning plate 2239 is inserted into the positioning groove to prevent the classification box 32 from contacting the lever 412;

[0138] When the classification box 32 collects the steel shots, the mass of the lifting seat 222 increases and begins to move down along the Y axis, and squeezes the one-way plate along the X axis through the ear plate 2231. In this process, in the initial stage, the limit block 22351 is blocked by the baffle 2237, so the inner slide plate 2235 does not move, and the positioning plate 2239 is stably inserted into the lifting seat 222 to play a safety role, so as to prevent the classification box 32 from sliding down to contact with the lever 412 when the total weight of the steel shots is not reached due to shaking or other reasons. At this time, the one-way plate drives the outer slide plate 2234 to move;

[0139] As the mass of the lifting seat 222 increases, the ear plate 2231 continues to push the one-way plate and the outer slide plate 2234 to move. When the total weight of the steel shots in the classification box 32 reaches the set value, the push plate 2238 contacts the baffle 2237 and pushes the baffle 2237 open. Without the restraint of the baffle 2237, the inner slide plate 2235 moves quickly under the push of the spring 2236, and the positioning plate 2239 is quickly separated from the lifting seat 222. The lifting seat 222 can move down smoothly and impact the lever 412. Through the amplification principle of the lever 412, an upward impact force is generated on the two classification boxes 32, thereby pushing the classification box 32 to move up.

[0140] Through this arrangement, it can be ensured that the lifting seat 222 does not contact the lever 412 before a certain amount of steel shots are collected. After the steel shots are collected, the gravity and gravitational potential energy of the lifting seat 222 are used to provide stable power for the upward movement of the classification box 32. There is no need to set up an additional electric propulsion device. The structure is simple, the operation is stable, the operation is automatic, and the use cost is low.

[0141] Example 2

[0142] like Figure 3-11 As shown, the components identical or corresponding to those in the first embodiment are designated by the corresponding reference numerals in the first embodiment. For simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0143] In this embodiment, the transfer unit 2 further includes:

[0144] A support platform 23 fixedly mounted inside the shot blasting machine 1, wherein a through slot 24 for feeding steel shots into the hopper 11 is provided inside the support platform 23;

[0145] The rotating frame 25 is rotatably mounted inside the support platform 23 , and the supports 221 are evenly distributed on the rotating frame 25 ;

[0146] A discharge port 26 provided at the bottom of the classification box 32; and

[0147] A sealing plate 27 is used to seal the discharge port 26 .

[0148] Specifically, the screening assembly 31 and the transfer box 21 are both installed on the support platform 23 . The screening assembly 31 does not directly contact the support 221 and the rotating frame 25 . The support platform 23 is located above the hopper 11 .

[0149] When a certain amount of steel shots are collected in the two classification seats, the lifting seat 222 moves down, and the rotating frame 25 is started to rotate, so that the support 221 filled with steel shots is moved away from under the screening assembly 31, and the other empty classification seat moves to the bottom of the screening assembly 31 to continue collecting steel shots;

[0150] After the classification box 32 filled with steel shots is tested for gradation, the sealing plate 27 is opened, and the steel shots in the classification box 32 enter the hopper 11 through the through slot 24. This achieves real-time detection of the steel shot gradation during the shot blasting process without affecting the real-time replenishment of steel shots for the hopper 11. There is no need to stop the machine to detect the steel shot gradation, which greatly improves work efficiency.

[0151] like Figure 11 As shown, further, the transfer unit 2 also includes:

[0152] A switch 28 provided inside the support platform 23 for controlling the start of the rotating frame 25 and the opening and closing of the transfer box 21; and

[0153] A switch 29 is provided on the inner wall of the support platform 23 for opening the discharge port 26 .

[0154] Specifically, the switch 1 28 can be a touch-type switch, the switch 2 29 can be a pressure plate structure with a slope, the sealing plate 27 is rotatably mounted inside the classification box 32, and a reset torsion spring is installed on the sealing plate 27;

[0155] In the initial state, the sealing plate 27 blocks the discharge port 26 of the classification box 32, and the lifting seat 222 does not contact the switch 1 28 and the switch 2 29. After the lifting seat 222 receives the steel shots and moves downward, it contacts the switch 1 28, the transfer box 21 stops transmitting the steel shots into the classification part 3, and the rotating frame 25 starts to rotate;

[0156] After the support 221 filled with steel shots is rotated from under the screening component 31 and aligned with the through slot 24, and another empty support 221 is rotated to under the screening component 31, the transfer box 21 continues to transport steel shots to the empty classification box 32, and the sealing plate 27 contacts the switch 29 and is squeezed by the switch 29 to rotate, so that the discharge port 26 is opened, and the steel shots in the classification box 32 fall into the hopper 11, providing steel shots for the shot blasting work of the hopper 11. In this way, the recycling work can be realized.

[0157] Working steps

[0158] Step 1: The steel is fed into the shot blasting machine 1 along the conveyor belt 13 and shot blasted by the shot blasting device 14;

[0159] Step 2: The shot recovery system 12 recovers the ejected shot into the transfer box 21;

[0160] Step 3: The steel shots in the transfer box 21 fall onto the screening roller 311 through the discharge pipe 312 and roll along the screening roller 311. Steel shots of different sizes fall from different gaps between the two rollers and fall into the two classification boxes 32 in the lifting seat 222 respectively.

[0161] Step 4: After a fixed weight of steel shots are collected in the lifting seat 222, the positioning plate 2239 is squeezed away by the ear plate 2231, and then the lifting seat 222 descends;

[0162] Step 5: After the lifting seat 222 descends, it hits one end of the lever 412, and the other end of the lever 412 hits the two classification boxes 32 upward, providing a fixed driving force for the two classification boxes 32 at the same time;

[0163] Step 6: The detection component 42 detects the upward height of the two classification boxes 32 and sends the detection data to the processing unit 5. The detection results are judged as follows:

[0164] a. The upward movement heights of the two classification boxes 32 are both within the normal range, indicating that the weights of the steel shots in the two classification boxes 32 are normal, and thus it can be determined that the gradation of the steel shots is normal;

[0165] b. When the upward movement height of the classification box 32 exceeds the normal range, it indicates that the weight of the steel shots in the classification box 32 is abnormal, and thus it can be determined that the gradation of the steel shots is abnormal;

[0166] Step 7: After the lifting seat 222 descends, it touches the switch 1 28, the transfer box 21 stops transferring the steel shots to the classification section 3, and the rotating frame 25 starts rotating. The detection work in step 6 can also be performed during the rotation of the rotating frame 25;

[0167] Step 8: After the rotating frame 25 rotates, the support 221 filled with steel shots is moved away from under the screening assembly 31 and aligned with the through slot 24, and another empty support 221 is moved to the bottom of the screening assembly 31;

[0168] Step 9: The transfer box 21 continues to transfer steel shots to the empty classification box 32. The sealing plate 27 in the classification seat 32 filled with steel shots contacts the second switch 29, so that the discharge port 26 is opened, and the steel shots in the classification box 32 fall into the hopper 11, providing steel shots for the shot blasting work of the hopper 11.

[0169] Step 10: When the processing unit 5 determines that the gradation of the steel shot is abnormal, the alarm component 52 is activated to issue an alarm, reminding the staff to replace and replenish the steel shot in time.

[0170] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel structure pretreatment device for municipal highway engineering, comprising a shot blasting machine, wherein the shot blasting machine is provided with a hopper for storing steel shots and a steel shot recovery system for recovering the ejected steel shots into the hopper, characterized in that: Also includes: A transfer part installed in the shot blasting machine, through which the steel shots collected by the steel shot recovery system enter the hopper, and the transfer part includes a transfer box for receiving the steel shots; a classification section for classifying the steel shots in the transfer section, the classification section comprising a screening assembly for screening the steel shots and a plurality of classification boxes for classifying and placing the screened steel shots; a weighing unit for detecting the weight of the steel shots in the classification box; as well as A processing unit for analyzing the steel shot weighing data, the processing unit including a console and an alarm component, the console is used to display the steel shot gradation analyzed based on the weighing data, and the alarm component is used to warn when the steel shot gradation is abnormal; The transfer section also includes an equal weight component for feeding steel shots into the classification section at equal weights, and the equal weight component includes: A support installed inside the shot blasting machine; A lifting seat is slidably mounted inside the support; the classification box is movably mounted inside the lifting seat; and A positioning component is provided on the support and is used to clamp the lifting seat within a fixed weight range. The weighing unit includes: a pushing component for pushing the classification box to slide in the lifting seat, wherein the pushing component provides a fixed pushing force; and A detection component provided inside the lifting seat for detecting the moving distance of each of the classification boxes; The pushing component includes: A striking plate slidably mounted inside the support for striking the classification box; and Rotating a lever installed inside the support, with both ends of the lever respectively located below the lifting seat and the striker plate; The positioning component includes: A lug plate provided on the lifting seat; A card plate movably mounted inside the support and blocking the bottom of the ear plate, a spring is mounted on the card plate, the card plate is a one-way rotating structure, and a slope is provided on the top of the card plate; The positioning component also includes: An outer slide plate movably inserted into the support, wherein the spring 1 and the clamping plate are both mounted on the outer slide plate; An inner slide movably plugged into the support and inserted into the outer slide; A limiting block provided on the inner slide; A second spring installed between the limit block and the outer slide; A baffle movably inserted in the support for blocking the limit block; a push plate provided on the outer slide plate for pushing the baffle; and A positioning plate is arranged on the inner slide plate and inserted into the interior of the lifting seat.

2. A steel structure pretreatment device for municipal highway engineering according to claim 1, characterized in that: The screening assembly comprises: multiple groups of screening rollers placed in an inclined shape, each of the screening rollers comprising two roller shafts, with different spacings between the ends of the two roller shafts, and the screening rollers being located above the classification box; and A discharge pipe is connected to the transfer box, and the discharge pipe is located above one end of the screening roller with a narrow spacing.

3. A steel structure pretreatment device for municipal highway engineering according to claim 1, characterized in that: A pulley assembly is provided on the outer wall of the classification box.

4. A steel structure pretreatment device for municipal highway engineering according to claim 1, characterized in that: The transfer unit also includes: A support platform fixedly installed inside the shot blasting machine, wherein the support platform is provided with a through slot for feeding steel shots into the hopper; Rotating a rotating frame installed inside the support platform, the supports are evenly distributed on the rotating frame; A feeding port provided at the bottom of the classification box; and A sealing plate is used to seal the discharge port.

5. A steel structure pretreatment device for municipal highway engineering according to claim 4, characterized in that: The transfer unit also includes: A switch 1 provided inside the support platform for controlling the start-up of the rotating frame and the opening and closing of the transfer box; and A second switch is provided on the inner wall of the support platform for opening the discharge port.

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