A double-station trolley-type shot blasting machine

Abstract

This application relates to the technical field of shot blasting equipment and discloses a dual-station trolley-type shot blasting machine, including a base and a track-changing platform. The shot blasting machine body is mounted on the base, and a feeding track is located at one end of the inlet of the shot blasting machine body. The track-changing platform is located at the end of the feeding track away from the shot blasting machine body. The track-changing platform includes a central track that can rotate 90 degrees. A loading area and a waiting area are located on both sides of the track-changing platform. A first track is provided between the loading area and the track-changing platform, and a second track is provided between the track-changing platform and the waiting area. By setting up two track trolleys, one track trolley transports the material into the shot blasting machine body for shot blasting, while the other track trolley loads the material at the loading area and moves to the waiting area to wait. Compared with conventional equipment that uses only one track trolley for feeding, the working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of shot blasting equipment technology, and in particular to a dual-station trolley-type shot blasting machine. Background Technology

[0002] A trolley-type shot blasting machine is a specialized device for surface cleaning and strengthening of large and medium-sized cast iron, cast steel, forgings, and welded plate parts. Its core structure includes a fixed shot blasting chamber and a movable carrier trolley. During operation, the workpiece to be treated is placed on the trolley, which moves along the track into the shot blasting chamber. The door is then closed. After the equipment is started, the shot blasters installed on the top and sides of the chamber rotate at high speed, propelling steel shot, steel grit, and other projectiles onto the surface of the workpiece to remove impurities such as adhering sand, rust, oxide scale, and welding slag, leaving the workpiece with a clean metallic appearance. This equipment is widely used in fields such as water pumps, steam turbines, machine tools, motors, engineering machinery, and shipbuilding.

[0003] However, existing shot blasting machines only have one trolley for feeding. After the trolley is loaded, it moves to the shot blasting chamber and then moves out for unloading and reloading. This results in a slow feeding speed. Conventional machines use two trolleys, which require a rotating platform to control the rotation and docking of the track. This necessitates frequent stopping and restarting of the drive motor. Under high load, this can easily lead to overheating and malfunctions. Furthermore, precise control of the track docking requires a high-precision encoder, increasing installation, debugging, and maintenance costs. Signal interference issues also need to be considered, making the machines inconvenient to use. Summary of the Invention

[0004] This application proposes a dual-station trolley-type shot blasting machine, which has the advantages of high working efficiency, low cost, and ease of use. It solves the problems of low efficiency, high cost, and inconvenience of use due to signal interference when existing trolley-type shot blasting equipment is used for surface cleaning and strengthening of large and medium-sized cast iron parts, cast steel parts, forgings, and plate welded parts.

[0005] To achieve the above objectives, this application adopts the following technical solution: a dual-station trolley-type shot blasting machine, comprising:

[0006] The base has a shot blasting machine body and a feed track located at one end of the inlet of the shot blasting machine body.

[0007] The track switching platform is located at the end of the feed track away from the shot blasting machine body. The track switching platform includes a middle track that can rotate 90 degrees, and the rotation angle limitation and reset of the track switching platform are controlled by a rotation reset device set on the base.

[0008] The loading area and waiting area are located on both sides of the track switching platform. A first track is provided between the loading area and the track switching platform, and a second track is provided between the track switching platform and the waiting area. The track gauge of the loading track, the first track, the second track and the intermediate track are the same.

[0009] Two track trolleys travel along the tracks. One trolley loads material at the loading area and then enters the shot blasting machine body via the first track, the middle track, and the feed track. The other trolley loads material at the loading area and then enters the waiting area via the track switching platform, the middle track, and the second track.

[0010] Furthermore, the track repositioning platform includes an active rotating platform and a passive ring plate rotatably connected to the base. The active rotating platform is located inside the passive ring plate, and the active rotating platform and the passive ring plate are respectively fixedly installed on the base by plane bearings. A drive motor for driving the active rotating platform to rotate is provided in the base. The bottom of the intermediate track is fixedly connected to a passive rotating platform located above the active rotating platform and the passive ring plate, and an elastic linkage device is provided between the passive ring plate and the passive rotating platform.

[0011] Under normal conditions, the passive rotating platform is separated from the active rotating platform using an elastic linkage device. This ensures that the active rotating platform remains undisturbed while being driven by the motor. The passive rotating platform is lowered and brought into contact with the top of the active rotating platform. The friction between the active rotating platform and the passive rotating platform causes the passive rotating platform and the intermediate track to rotate together. A rotation reset device controls the passive rotating platform and the intermediate track to rotate 90 degrees and then stop. It also controls the passive rotating platform and the intermediate track to rotate in the opposite direction and reset. This controls the intermediate track to remain perpendicular to the first and second tracks, allowing the track trolley on the intermediate track to move to the shot blasting machine body via the feed track. The shot blasting machine body then performs shot blasting on the material loaded on the feed track. Alternatively, the intermediate track can be kept perpendicular to the feed track so that the track trolley can move back and forth between the loading area and the waiting area.

[0012] Furthermore, the elastic sliding device includes several cylindrical shafts movably mounted on the top of the passive ring plate. The cylindrical shafts can move up and down relative to the passive ring plate. The top of the cylindrical shafts is fixedly connected to the bottom of the passive rotating platform, and there are no fewer than four cylindrical shafts. The several cylindrical shafts are arranged in a circumferential array on the passive ring plate, and a support spring is movably arranged on the outer side of the cylindrical shafts between the passive ring plate and the active rotating platform. After the track trolley enters the middle track at the top of the passive rotating platform, the bottom of the passive rotating platform can still remain separated from the active rotating platform due to the elastic support of the support springs on the outer side of the multiple cylindrical shafts, so that the track trolley on the middle track will not rotate with the active rotating platform.

[0013] Furthermore, the top of the passive ring plate is provided with a limiting block to limit the cylindrical shaft. The diameter of the cylindrical shaft inside the passive ring plate is greater than the diameter of the shaft above the passive ring plate, which prevents the cylindrical shaft from separating from the passive ring plate under the elastic force of the support spring. At the same time, under normal conditions, the vertical distance between the active rotating platform and the passive rotating platform can be controlled between 1cm and 5cm. When the passive rotating platform and the active rotating platform are separated, the distance between one end of the track trolley and the other end of the track will not be too far, thereby ensuring that the wheels of the trolley can cross the other end of the track from one end of the track trolley.

[0014] Furthermore, a magnetic ring is fixedly installed on the outer edge of the bottom of the passive rotating platform, and an electromagnet is fixedly installed on the top of the base directly below the magnetic ring. There are at least four electromagnets, arranged in a circular array directly below the magnetic ring. When the electromagnets are energized, they attract the magnetic ring, causing the magnetic ring, cylindrical shaft, and passive rotating platform as a whole to move downwards against the elastic force of the support spring until the bottom of the passive rotating platform is in tight contact with the top of the active rotating platform. The magnetic attraction generated by the simultaneous energization of the magnetic ring by multiple electromagnets also utilizes the friction between the passive and active rotating platforms to make the active rotating platform... The rotating platform drives the passive rotating platform to rotate, which in turn drives the track trolley on the intermediate track to rotate as well. This eliminates the need for frequent stops and restarts when the intermediate track rotates and changes position in the air, avoiding the overheating and malfunction problems that can easily occur when the drive motor is frequently rotating and stopping the track changing platform that is carrying the load material. This improves the overall service life of the dual-station trolley shot blasting machine. Compared with the conventional method of motor-driven platform rotation, it saves the time between the platform's rotation state and the stop state, and improves the passage efficiency of the track trolley, thereby improving the working efficiency of the shot blasting machine.

[0015] Furthermore, the number of the rotary reset devices is set to two, and the two rotary reset devices are symmetrically arranged on both sides of the first track. Each rotary reset device includes a cylinder, and a piston is movably fitted inside the cylinder. A steel rope is fixedly connected to the piston. An annular slide is opened on the outer side of the passive ring plate. Two limiting blocks are symmetrically arranged inside the annular slide. The end of the steel rope away from the piston in the two rotary reset devices is fixedly connected to the two limiting blocks respectively. End plates are fixedly connected to both ends of the piston. A reset spring is provided between the piston and one of the end plates. Through the elastic force of the reset spring, the piston tends to move away from the passive rotating platform under normal conditions. Then, after the passive ring plate, the elastic linkage device and the passive rotating platform rotate together by ninety degrees, the passive ring plate, the elastic linkage device and the passive rotating platform can be pulled to rotate and reset.

[0016] Furthermore, limiting sleeves are fixedly installed on the inner sides of the two end plates respectively. The two sides of the piston are movably connected to one end of the two limiting sleeves respectively. The two limiting sleeves limit the piston on both sides respectively, so that the elastic force of the return spring is sufficient. The piston can move a distance between the two limiting sleeves that is one-quarter of the circumference of the passive rotating platform. That is, when the passive rotating platform rotates half a turn, the piston moves from the end that is attached to one of the limiting sleeves to the end that is attached to the other limiting sleeve.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present application provides a dual-station trolley shot blasting machine, which is equipped with two track trolleys. When one track trolley transports the material into the shot blasting machine body for shot blasting, the other track trolley loads the material in the loading area and moves to the waiting area to wait. Compared with conventional equipment that uses one track trolley for feeding, the working efficiency is improved.

[0019] 2. The structure of the track-changing platform in conjunction with the rotary reset device utilizes the normally separate design of the passive and active rotating platforms within the track-changing platform. This allows the active rotating platform to maintain continuous rotation. By controlling the contact between the passive and active rotating platforms, friction is used to drive the passive rotating platform and its intermediate track, thereby changing the position of the intermediate track. This facilitates the passage of trolleys between the feeding area, waiting area, and shot blasting machine body, eliminating the need for frequent stops and restarts. This avoids overheating and malfunctions that can easily occur when the drive motor frequently rotates and stops the track-changing platform carrying the load material. This improves the overall service life of the dual-station trolley-type shot blasting machine. Compared to conventional motor-driven platform rotation, it saves time between platform rotation and stop, improving the passage efficiency of the track trolley and ultimately increasing the working efficiency of the shot blasting machine.

[0020] 3. The structure of the track-changing platform in conjunction with the rotary reset device eliminates the need for a high-precision encoder, reducing installation, debugging, and maintenance costs. It also eliminates the need to consider signal interference issues, making it convenient for use and subsequent maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of the intermediate track transposition platform;

[0024] Figure 3 for Figure 2 A schematic diagram of the middle section structure;

[0025] Figure 4 for Figure 3 The front view;

[0026] Figure 5 for Figure 2 A magnified structural diagram of point A (the fill in the diagram is for easy differentiation of the structures and is not a cross-section).

[0027] Figure 6 for Figure 4 A magnified schematic diagram of the structure at point B;

[0028] Figure 7 for Figure 6 Schematic diagram of the connection structure between the central cylindrical shaft and the passive ring plate;

[0029] Figure 8 for Figure 1 A schematic diagram of the state of the active rotating platform after it has rotated 90 degrees.

[0030] Figure 9 for Figure 4 A schematic diagram of the cross-sectional structure of the central rotating reset device.

[0031] In the diagram: 1. Base; 2. Shot blasting machine body; 3. Feeding track; 4. Track switching platform; 401. Active rotating platform; 402. Passive ring plate; 4021. Annular slide; 4022. Limiting block; 403. Drive motor; 404. Cylindrical shaft; 405. Passive rotating platform; 406. Support spring; 407. Limiting block; 408. Magnetic ring; 409. Intermediate track; 5. First track; 6. Second track; 7. Feeding area; 8. Waiting area; 9. Track trolley; 10. Electromagnet; 11. Rotary reset device; 111. Cylinder; 112. Piston; 113. Steel rope; 114. End plate; 115. Reset spring; 116. Limiting sleeve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1 A dual-station trolley-type shot blasting machine includes a base 1, on which a shot blasting machine body 2 is fixedly mounted. A feeding track 3 is fixedly installed on the base 1 at one end of the inlet of the shot blasting machine body 2, with one end extending into the base 1. A track shifting platform 4 is fixedly installed on the top of the base 1 at the other end of the feeding track 3. A first track 5 and a second track 6 are respectively located on the base 1 on both sides of the track shifting platform 4. The first track 5, the second track 6, and the feeding track 3 have the same track gauge, and the first track 5 and the second track 6 are perpendicular to the feeding track 3. The end of the first track 5 away from the track shifting platform 4 is designated as a loading area 7, and the end of the second track 6 away from the track shifting platform 4 is designated as a waiting area 8. Two track trolleys 9 are used to transport materials into the shot blasting machine body 2, and both track trolleys 9 can actively travel along the first track 5, the second track 6, and the feeding track 3. One of the trolleys loads material at the loading area 7 and then enters the shot blasting machine body 2 along the first track 5, track switching platform 4, and feed track 3. While the shot blasting machine body 2 is performing shot blasting on the material on the track trolley 9, the other track trolley 9 loads material at the loading area 7 and then enters the waiting area 8 along the first track 5, track switching platform 4, and second track 6. After the shot blasting operation on the material on one of the track trolleys 9 is completed, that track trolley 9, carrying the material, enters the loading area 7 along the feed track 3, track switching platform 4, and first track 5 for unloading and loading. Meanwhile, the other track trolley 9, located in the waiting area 8, enters the shot blasting machine body 2 along the second track 6, track switching platform 4, and feed track 3. The material on the track trolley 9 is then subjected to shot blasting within the shot blasting machine body 2. By using two track trolleys 9 to alternately load material into the shot blasting machine body 2, the working efficiency of the shot blasting machine is improved.

[0034] like Figures 1-6The track repositioning platform 4 includes an active rotating platform 401 and a passive ring plate 402 rotatably connected to the base 1. The active rotating platform 401 is located inside the passive ring plate 402, and the outer side of the active rotating platform 401 does not contact the inner side of the passive ring plate 402. The active rotating platform 401 and the passive ring plate 402 are respectively fixedly mounted on the base 1 by plane bearings. A drive motor 403 for driving the active rotating platform 401 to rotate is provided inside the base 1. Several circular arrays are movably fitted on the top of the passive ring plate 402. There are at least four cylindrical shafts 404 arranged in a row. A passive rotating platform 405 is fixedly connected to the top of several cylindrical shafts 404. A support spring 406 is provided between the passive rotating platform 405 and the passive ring plate 402, which is movably fitted on the outside of the cylindrical shaft 404. The elastic force of the support spring 406 ensures that the bottom of the passive rotating platform 405 does not contact the top of the active rotating platform 401 under normal conditions. The top of the passive ring plate 402 is provided with a limiting block 407 to limit the movement of the cylindrical shaft 404.

[0035] like Figure 6 and Figure 7 As shown, the top end of the cylindrical shaft 404 is connected to the passive rotating platform 405 by a threaded connection. The diameter of the cylindrical shaft 404 inside the passive ring plate 402 is greater than the diameter of the shaft above the passive ring plate 402, so as to prevent the cylindrical shaft 404 from separating from the passive ring plate 402 under the elastic force of the support spring 406. At the same time, under normal conditions, the vertical distance between the active rotating platform 401 and the passive rotating platform 405 can be controlled between 1cm and 5cm.

[0036] Please continue reading. Figures 1-6 A magnetic ring 408 is fixedly installed on the outer edge of the bottom of the passive rotating platform 405. An electromagnet 10 is fixedly installed on the top of the base 1, located directly below the magnetic ring 408. There are no fewer than four electromagnets 10, and several electromagnets 10 are arranged in a circular array directly below the magnetic ring 408. When the electromagnets 10 are energized, they are attracted by the magnetic ring 408, which causes the magnetic ring 408, the cylindrical shaft 404 and the passive rotating platform 405 to move downward against the elastic force of the support spring 406 until the bottom of the passive rotating platform 405 is in tight contact with the top of the active rotating platform 401.

[0037] A middle track 409 is fixedly installed on the top of the passive rotary platform 405, and the track gauge of the middle track 409 is the same as that of the first track 5. The middle track 409 and the feed track 3 are positioned as follows: Figure 1 In the vertical state shown, the two ends of the intermediate track 409 are close to but not in contact with one end of the first track 5 and the second track 6, respectively, and the intermediate track 409 is in a position as shown in the figure. Figure 8In the vertical state shown, one end of the intermediate track 409 is close to but does not contact one end of the feed track 3, so that one end of the first track 5, the second track 6 and the feed track 3 will not affect the rotation of the intermediate track 409, while ensuring that the track trolley 9 can travel along the first track 5, the second track 6 or the feed track 3 to the intermediate track 409.

[0038] like Figures 1-2 , Figure 5 and Figure 9 A rotary reset device 11 for limiting and resetting the rotation of the passive rotating platform 405 is fixedly installed on the base 1. Two rotary reset devices 11 are symmetrically arranged on both sides of the first track 5. Each rotary reset device 11 includes a cylinder 111, inside which a piston 112 is movably fitted. A steel cable 113 is fixedly connected to the piston 112. An annular slide 4021 is provided on the outer side of the passive ring plate 402. Two limiting blocks 4022 are symmetrically arranged inside the annular slide 4021. The end of the steel cable 113 in each rotary reset device 11 away from the piston 112 is fixedly connected to one of the limiting blocks 4022. End plates 114 are fixedly connected to both ends of the piston 112. The piston 112 and one of the limiting blocks 4022... A return spring 115 is provided between the two end plates 114. The elastic force of the return spring 115 causes the piston 112 to move away from the passive rotating platform 405 under normal conditions. Limiting sleeves 116 are fixedly installed on the inner sides of the two end plates 114 respectively. The two sides of the piston 112 are movably connected to one end of the two limiting sleeves 116 respectively. The two limiting sleeves 116 limit the piston 112 on both sides respectively, so that the elastic force of the return spring 115 is sufficient, and the piston 112 can move a distance between the two limiting sleeves 116 that is one-quarter of the circumference of the passive rotating platform 405. That is, when the passive rotating platform 405 rotates half a turn, the piston 112 moves from the end that is attached to one of the limiting sleeves 116 to the end that is attached to the other limiting sleeve 116.

[0039] In use, one of the track trolleys 9 is initially located in the loading area 7, and the other track trolley 9 is located in the waiting area 8. After loading material in the loading area 7, the drive motor 403 is started to drive the active rotating platform 401 to rotate continuously at a low speed. At this time, the elastic force of the reset spring 115 causes the piston 112 to be located in the cylinder 111 on the side away from the passive rotating platform 405. The pulling force of the steel rope 113 in the two rotating reset devices 11 is used to keep the middle track 409 on the passive rotating platform 405 perpendicular to the feeding track 3. One or two track trolleys 9 move from the loading area 7 to the track trolley 9 at the top of the passive rotating platform 405. During this stage, the total weight of the track trolley 9 and the material is less than the total supporting force of several support springs 406 on the passive rotating platform 405, ensuring that the passive rotating platform 405 does not contact the active rotating platform 401 and does not affect the rotation of the active rotating platform 401.

[0040] Then, the electromagnet 10 is energized to generate a magnetic attraction force on the magnetic ring 408. Combined with the gravity of the track carriage 9, the total weight of the track carriage 9 and the material, plus the total force of the magnetic attraction forces of the electromagnets 10 on the magnetic ring 408, is greater than the total supporting force of the support springs 406 on the passive rotating platform 405. That is, the downward pressure of the passive rotating platform 405 on the active rotating platform 401 is greater than the total supporting force of the support springs 406 on the passive rotating platform 405. Furthermore, at this time, the frictional force of the active rotating platform 401 on the passive rotating platform 405 is greater than the elastic force of the return spring 115 on the piston 112. Therefore, the rotation of the active rotating platform 401 on the passive rotating platform 405... Friction causes the passive rotating platform 405 to rotate half a turn until the piston 112 in the rotating reset device 11 moves from one of the limiting sleeves 116 to the other. After that, the piston 112 can no longer move. The pulling force of the steel rope 113 on the passive rotating platform 405 causes the static friction between the bottom of the passive rotating platform 405 and the top of the active rotating platform 401 to change to sliding friction. That is, the middle track 409 at the top of the passive rotating platform 405 remains perpendicular to the first track 5 and the second track 6, while the active rotating platform 401 continues to rotate. The track trolley 9 on the middle track 409 moves toward the feed track 3 and into the base 1.

[0041] When the material on the track trolley 9 is shot-blasted on the base 1, the control electromagnet 10 is de-energized. The elastic force of the support spring 406 causes the passive rotating platform 405 to move upward and separate from the active rotating platform 401. The elastic force of the reset spring 115 pushes the piston 112 to reset and move. The reset and movement of the piston 112 causes the steel rope 113 to pull the passive ring plate 402, the cylindrical shaft 404 and the passive rotating platform 405 to rotate 90 degrees in the opposite direction. This causes the intermediate track 409 to rotate to a state perpendicular to the feeding track 3. Another track trolley 9 located in the waiting area 8 moves to the loading area 7 via the second track 6, the intermediate track 409 and the first track 5 to load the material. After loading is completed, it moves back to the waiting area 8 via the first track 5, the intermediate track 409 and the second track 6 to wait.

[0042] After shot blasting is completed inside the shot blasting machine body 2, the electromagnet 10 is energized to generate a magnetic attraction force on the magnetic ring 408, causing the passive rotating platform 405 to move down and contact the active rotating platform 401. This causes the active rotating platform 401 to rotate the passive rotating platform 405 and the intermediate track 409 together by 90 degrees, making the intermediate track 409 perpendicular to the first track 5 and the second track 6. One of the track trolleys 9 then moves out from the base 1, enters the intermediate track 409 via the feeding track 3, and then the electromagnet 10 is de-energized again, supporting the spring... The elastic force of spring 406 causes the passive rotating platform 405 to move upward and separate from the active rotating platform 401. The elastic force of return spring 115 pushes piston 112 to move back to its original position. The resetting movement of piston 112 causes steel rope 113 to pull passive ring plate 402, cylindrical shaft 404 and passive rotating platform 405 to rotate 90 degrees in the opposite direction, so that intermediate track 409 rotates to a state perpendicular to feed track 3. One of the track trolleys 9 located on intermediate track 409 moves to the loading area 7 via first track 5 for unloading and loading.

[0043] Finally, the other rail trolley 9, which was waiting in waiting area 8, moved to the middle rail 409. The electromagnet 10 was energized to generate a magnetic attraction force on the magnetic ring 408, causing the passive rotating platform 405 to move down and contact the active rotating platform 401. Then, the active rotating platform 401 drove the passive rotating platform 405 and the middle rail 409 to rotate together by 90 degrees. The other rail trolley 9 on the middle rail 409 then moved to the shot blasting machine body 2 via the feeding rail 3. The base 1 then shot blasted the material on the rail trolley 9. The above steps were repeated until the rail trolley 9, which was loaded in the feeding area 7, moved to the waiting area 8 to wait.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-station trolley-type shot blasting machine, characterized in that, include: The base has a shot blasting machine body and a feed track located at one end of the inlet of the shot blasting machine body. The track switching platform is located at the end of the feed track away from the shot blasting machine body. The track switching platform includes a middle track that can rotate 90 degrees, and the rotation angle limitation and reset of the track switching platform are controlled by a rotation reset device set on the base. The loading area and waiting area are located on both sides of the track switching platform. A first track is provided between the loading area and the track switching platform, and a second track is provided between the track switching platform and the waiting area. The track gauge of the feeding track, the first track, the second track and the intermediate track are the same. Two track trolleys travel along the tracks. One trolley loads material at the loading area and then enters the shot blasting machine body via the first track, the middle track, and the feed track. The other trolley loads material at the loading area and then enters the waiting area via the track switching platform, the middle track, and the second track.

2. The dual-station trolley-type shot blasting machine according to claim 1, characterized in that, The track repositioning platform includes an active rotating platform and a passive ring plate rotatably connected to the base. The active rotating platform is located inside the passive ring plate, and the active rotating platform and the passive ring plate are respectively fixedly installed on the base by plane bearings. The base is equipped with a drive motor that drives the active rotating platform to rotate. The bottom of the intermediate track is fixedly connected to a passive rotating platform located above the active rotating platform and the passive ring plate, and an elastic linkage device is provided between the passive ring plate and the passive rotating platform.

3. The dual-station trolley-type shot blasting machine according to claim 2, characterized in that, The elastic sliding device includes several cylindrical shafts movably mounted on the top of the passive ring plate. The top of the cylindrical shafts is fixedly connected to the bottom of the passive rotating platform, and there are no fewer than four cylindrical shafts. The cylindrical shafts are arranged in a circumferential array on the passive ring plate, and a support spring is movably provided on the outer side of the cylindrical shafts between the passive ring plate and the active rotating platform.

4. The dual-station trolley-type shot blasting machine according to claim 3, characterized in that, The top of the passive ring plate is provided with a limiting block for limiting the cylindrical shaft. The diameter of the cylindrical shaft inside the passive ring plate is greater than the diameter of the shaft above the passive ring plate.

5. The dual-station trolley-type shot blasting machine according to claim 2, characterized in that, A magnetic ring is fixedly installed on the outer edge of the bottom of the passive rotating platform, and an electromagnet is fixedly installed on the top of the base directly below the magnetic ring. There are no fewer than four electromagnets, and several electromagnets are arranged in a circular array directly below the magnetic ring. When the electromagnets are energized, they are attracted to the magnetic ring by magnetism.

6. The dual-station trolley-type shot blasting machine according to claim 2, characterized in that, The number of rotary reset devices is set to two, and the two rotary reset devices are symmetrically arranged on both sides of the first track. Each rotary reset device includes a cylinder body, and a piston is movably fitted inside the cylinder body. A steel rope is fixedly connected to the piston. An annular slide is opened on the outer side of the passive ring plate. Two limiting blocks are symmetrically arranged inside the annular slide. The end of the steel rope away from the piston in the two rotary reset devices is fixedly connected to the two limiting blocks respectively. End plates are fixedly connected to both ends of the piston respectively. A reset spring is provided between the piston and one of the end plates.

7. The dual-station trolley-type shot blasting machine according to claim 6, characterized in that, Limit sleeves are fixedly installed on the inner sides of the two end plates, and the two sides of the piston are movably connected to one end of the two limit sleeves respectively.

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