A reel trolley device for anti-corrosion spraying

Abstract

The utility model discloses a kind of for anticorrosion spray coiling trolley device, belong to steel coil trolley protection technical field, a kind of for anticorrosion spray coiling trolley device, including tractor and steel coil load trolley, the tail end of tractor and the front end of steel coil load trolley are connected by traction pin, the bottom of tractor is fixedly installed with positioning module, four corner places of the bottom of steel coil load trolley are all fixed with double-wheel group, double-wheel group is made of two equal specifications casters, and two casters are parallelly arranged, the chassis both sides of steel coil load trolley are provided with auxiliary parking assembly. It can effectively reduce the time of vehicle in water vapor diffusion area, reduce the degree of corrosion of various electrical appliances on vehicle, prolong the service life of the whole device, and improve the safety of the whole production line.

Description

Technical Field

[0001] This utility model relates to the field of steel coil trolley protection technology, and more specifically, to a coil trolley device for anti-corrosion spraying. Background Technology

[0002] In modern steel rolling production, especially in cold-rolled or hot-rolled strip steel production lines, the coiler is a crucial core piece of equipment. Its function is to coil the rolled strip into regular steel coils for subsequent storage, transportation, and processing. The coil trolley (also known as the lifting saddle) below the coiler is a key piece of equipment connecting the coiling and uncoiling processes. It primarily performs two core functions: first, it acts as a support roller during coiling, supporting the coil; second, after coiling, it lifts the finished steel coil from the coiler's mandrel, removes it, and transports it to the next process.

[0003] Currently, during the rolling mill's production process, the steel coil trolley below the coiler is severely affected by the emulsion spray. This is because the moisture content below the coiler is extremely high. During startup, from the second pass to the final unloading to the packaging area, the steel coil unloading trolley remains in this area for about 30 minutes. During this time, the motors, encoders, hydraulic equipment, and other components on the trolley are constantly surrounded by moisture, causing severe corrosion to the equipment.

[0004] Therefore, in view of this, the existing structure is studied and improved to provide a roll trolley device for anti-corrosion spraying, in order to achieve a more practical purpose. Utility Model Content

[0005] 1. Technical problems to be solved In view of the problems existing in the prior art, the purpose of this utility model is to provide a trolley device for anti-corrosion spraying, which can effectively reduce the time the vehicle is in a water vapor-filled area, reduce the degree of corrosion of various electrical appliances on the vehicle, extend the service life of the entire device, and improve the safety of the entire production line.

[0006] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0007] A coil trolley device for anti-corrosion spraying includes a tractor and a steel coil carrier. The rear end of the tractor and the front end of the steel coil carrier are connected by a traction pin. A positioning module is fixedly installed on the bottom of the tractor. Double wheel sets are fixed at the four corners of the bottom of the steel coil carrier. Each double wheel set consists of two casters of the same size, and the two casters are arranged in parallel. Auxiliary parking components are provided on both sides of the chassis of the steel coil carrier. The auxiliary parking component includes a long steel bar. One end of the long steel bar is hinged to one side of the chassis of the steel coil loading vehicle. A high-friction caster is installed at the other end of the long steel bar. A hydraulic pump is fixedly installed on one side of the chassis of the steel coil loading vehicle. The output end of the hydraulic pump is connected to a hydraulic rod through a pipeline. The fixed end of the hydraulic rod is hinged to one side of the chassis of the steel coil loading vehicle, and the telescopic end of the hydraulic rod is hinged to the middle of the long steel bar.

[0008] Furthermore, the distance between the two casters in any double-wheel set is the same, and the casters in the double-wheel set are steel caster structures.

[0009] Furthermore, the casters at the bottom of the tractor are all swivel casters, and each caster has an independent caster lock.

[0010] Furthermore, the hydraulic pump is equipped with a remote signal control chip, which is connected to a remote control terminal.

[0011] Furthermore, the wheel surface of the high-friction caster is made of polyurethane material.

[0012] Furthermore, the hinge point between the telescopic end of the hydraulic rod and the middle of the long steel bar is located at the center of the line connecting the hinge points at both ends of the long steel bar.

[0013] Furthermore, the long steel bar can rotate around the end that is hinged to the chassis via the extension and retraction of the hydraulic rod; The angle between the long steel bar and the steel coil loading car when the long steel bar rotates is in the range of 15° to 30°.

[0014] 3. Beneficial Effects Compared with existing technologies, the advantages of this utility model are: ① In this solution, the movement of the steel coil carrier is controlled by a tractor, and then the auxiliary parking component is lowered to assist the entire vehicle to stop quickly and ensure stability during parking. The coil is then quickly unloaded during parking, and the auxiliary parking component is then retracted, allowing the entire vehicle to pass through the spray area quickly. This effectively reduces the time the vehicle spends in the water vapor-filled area, reduces the degree of corrosion of various electrical components on the vehicle, and extends the service life of the entire device. ② This solution uses hydraulic drive to actively press the polyurethane high-friction casters against the ground, providing the trolley carrying tens of tons of steel coils with anti-slip protection far exceeding that of traditional caster locks. It effectively prevents the trolley from accidentally slipping on the wet and slippery spray platform, not only protecting the expensive steel coil products and equipment, but also greatly ensuring the personal safety of on-site operators, and solving a major safety hazard on the production line. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the top structure of the winding trolley device of this utility model; Figure 2 This is a schematic diagram of the bottom structure of the winding trolley device of this utility model; Figure 3 This is a schematic diagram of the structure of the winding trolley device of this utility model used in conjunction with the track; Figure 4 This is a schematic diagram of the auxiliary parking component in this utility model.

[0016] Explanation of the labels in the diagram: 1. Tractor; 2. Steel coil loading vehicle; 3. Positioning module; 4. Dual-wheel set; 5. Auxiliary parking components; 501. Long steel bar; 502. High friction casters; 503. Hydraulic pump; 504. Hydraulic rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] Example 1 Please see Figure 1 - Figure 4 A coil trolley device for anti-corrosion spraying includes a tractor 1 and a steel coil carrier 2. The tail end of the tractor 1 and the front end of the steel coil carrier 2 are connected by a traction pin. The separate design of the tractor 1 and the steel coil carrier 2 improves the flexibility of transportation and operation. The tractor 1 can independently perform other tasks.

[0019] A positioning module 3 is fixedly installed at the bottom of the tractor 1. The positioning module 3 is composed of positioning chips. The positioning module 3 at the bottom of the tractor 1 ensures the accuracy and stability of the vehicle position during the spraying operation, and ensures uniform spraying effect.

[0020] The bottom of the steel coil carrier 2 is fixed with a double wheel set 4 at each of the four corners. The double wheel set 4 consists of two casters of the same size, and the two casters are arranged in parallel. The design of the double wheel set 4 at the bottom of the steel coil carrier 2 provides stable and strong load-bearing support, which is suitable for transporting heavy steel coils.

[0021] Auxiliary parking components 5 are installed on both sides of the chassis of the steel coil loading car 2; The auxiliary parking component 5 includes a long steel bar 501. One end of the long steel bar 501 is hinged to one side of the chassis of the steel coil loading vehicle 2. A high-friction caster 502 is installed at the other end of the long steel bar 501. A hydraulic pump 503 is fixedly installed on one side of the chassis of the steel coil loading vehicle 2. The output end of the hydraulic pump 503 is connected to a hydraulic rod 504 through a pipeline. The fixed end of the hydraulic rod 504 is hinged to one side of the chassis of the steel coil loading vehicle 2. The telescopic end of the hydraulic rod 504 is hinged to the middle of the long steel bar 501 through a hinge.

[0022] The angle of the long steel bar 501 with high-friction casters 502 is controlled by the hydraulic rod 504, which can actively and reliably increase the friction and contact area with the ground when needed. On the one hand, this can effectively prevent the trolley carrying heavy steel coils from accidentally slipping on the spray slope or platform, greatly improving operational safety. On the other hand, before stopping, the high friction between the high-friction casters 502 and the ground can improve the deceleration effect and ensure the stability of the steel coil trolley 2 after deceleration.

[0023] See Figure 1 , Figure 2 , Figure 3 Specifically, the distance between the two casters in any double-wheel set 4 is the same, and the casters in the double-wheel set 4 are steel caster structures.

[0024] The equidistant arrangement ensures uniform force distribution on each wheel set, improving driving stability and load-bearing balance, and reducing the risk of uneven loading. Simultaneously, the dual-wheel mechanism allows for the movement of the steel coil carrier 2 on the track.

[0025] The use of steel casters greatly enhances their strength and wear resistance, enabling them to withstand the enormous weight of the steel coils and the wear and tear of long-term use in industrial environments, thus extending the service life of the equipment and making it suitable for heavy-duty conditions. Simultaneously, it prevents deformation of the casters on the steel coil carrier 2 when moving on the track, thereby ensuring that the forward path of the steel coil carrier 2 remains unchanged.

[0026] Specifically, the casters at the bottom of the tractor unit 1 are all swivel casters, and each caster has an independent caster lock.

[0027] The fully swivel caster design gives the tractor unit 1 extremely high maneuverability, allowing it to easily turn and move in confined spaces, thus improving work efficiency.

[0028] The independent caster lock function allows the operator to securely lock the tractor 1 in place when connecting the material carrier, positioning, or temporarily parking, preventing it from moving and ensuring the stability and safety of the operation.

[0029] See Figure 1 , Figure 4Specifically, the hydraulic pump 503 is equipped with a remote signal control chip, which is connected to a remote control terminal.

[0030] The remote wireless control assisted parking component 5 is now functional. Operators can control the hydraulic system from a safe distance, raising or lowering the parking outriggers, without needing to manually operate them at close range. This not only improves operational convenience but, more importantly, avoids personnel working near potentially slippery or chemically sprayed areas, significantly enhancing safety.

[0031] Specifically, the wheel surface of the high-friction caster 502 is made of polyurethane material.

[0032] Polyurethane materials have an extremely high coefficient of friction, excellent wear resistance, and resistance to chemical corrosion.

[0033] It provides maximum friction when assisted parking is triggered, effectively suppressing vehicle rollback.

[0034] It is resistant to corrosion from anti-corrosion chemicals that may be used in the spray system.

[0035] Compared to ordinary rubber or metal, it has better durability and extends the replacement cycle of this critical safety component.

[0036] Specifically, the hinge point between the telescopic end of the hydraulic rod 504 and the middle part of the long steel bar 501 is located at the center of the line connecting the hinge points at both ends of the long steel bar 501.

[0037] By setting the force application point of the hydraulic rod 504 at the middle of the long steel bar 501, it can be approximated as an equal-arm lever, so that the output force required by the hydraulic rod 504 to push the long steel bar 501 to rotate is minimized. This allows for the selection of a lower-power and lower-cost hydraulic pump 503 and hydraulic rod 504, reducing system energy consumption and manufacturing costs while ensuring the reliability of the operation.

[0038] Specifically, the long steel bar 501 can rotate around the end that is hinged to the chassis via the extension and retraction drive of the hydraulic rod 504; When the long steel bar 501 rotates, the angle between it and the steel coil loading car 2 ranges from 15° to 30°.

[0039] The rotatable design allows the high-friction casters 502 in the auxiliary parking assembly 5 to be folded up when not in use, without affecting the normal driving and passability of the vehicle.

[0040] Limiting the angle range to 15°–30° is an optimal balance. An angle that is too small (<15°) may result in insufficient extension length, poor friction, and inadequate support; an angle that is too large (>30°) may cause excessive bending moment on the hydraulic system and potentially lead to structural interference when retracted. This angle range ensures both effective anti-slip support and the structural strength and stability of the mechanism.

[0041] Working principle: The tractor unit 1 connects to and pulls the steel coil carrier 2 via a towing pin, transporting the fully loaded steel coils to the designated spraying area. The positioning module 3 at the bottom of the tractor unit 1 ensures precise vehicle positioning. Simultaneously, the swivel casters of the tractor unit 1 can be locked with their individual caster locks, providing initial fixation for the entire system.

[0042] Once the vehicle comes to a complete stop directly beneath the winding machine, the operator sends a command via a remote control terminal. The command signal is received by the remote signal control chip within the hydraulic pump 503, which then starts the hydraulic pump 503. The hydraulic pump 503 then drives the hydraulic rod 504 to extend.

[0043] As the long steel bar 501 rotates, its high-friction caster 502 is pressed against the ground. Because the caster's surface is made of polyurethane, which has an extremely high coefficient of friction and corrosion resistance, it generates tremendous friction with the ground, especially in potentially slippery spray areas. This downward pressure and friction work together like "parking spikes" on the trolley, greatly increasing the resistance to sliding and effectively preventing it from moving accidentally on slopes or slippery platforms due to spray impact or ground vibration.

[0044] Then, the operator performs the unrolling operation.

[0045] After the unwinding operation is completed, the operator sends another command via the remote terminal. The hydraulic rod 504 retracts, pulling the long steel bar 501 upwards and rotating it to lift it off the ground, causing the high-friction caster 502 to leave the ground. At this point, the device returns to normal driving status, and the dual-wheel assembly 4 takes over the movement function, allowing it to be easily moved out of the work area by the towing vehicle 1.

[0046] Example 2 Further discussion will be made based on the above embodiment 1.

[0047] When the trolley is in the outer area after transporting material, after the operator presses the GOANDWAIT button, the trolley first determines its current stop position and then decides whether to move inward based on that position. After the determination, when the trolley moves towards the coiler, it will first stop at approximately 2880mm outside the coiler and then remain stationary, waiting for the signal to continue. The determination condition for this signal is the final pass automatic speed reduction declaration signal. When this signal is generated, the trolley will automatically move inward until it is directly below the coiler, and then execute the automatic unwinding procedure normally.

[0048] Phase 1: After 15 days of program interpretation, I became familiar with the control logic of the original program for the automatic unwinding of the trolley. The execution steps of the GOANDWAIT program are as follows: after receiving the driving command from the external area of ​​the winding machine, the trolley moves forward at high speed to the position of 300mm, then moves at low speed to the position of 20mm and stops. It then slides to the position of 0mm and waits for the material to be discharged.

[0049] In the modified GOANDWAIT program, the car first determines whether its current position is greater than 2880mm from the external area. If it is, it switches from high-speed to low-speed mode and stops when it reaches around 2880mm, waiting for the activation of the final automatic speed reduction declaration signal. Then it automatically moves to the 0mm position. If the car's initial position is less than 2880mm, the car does not move and remains stationary at its current position, waiting for the activation of the final automatic speed reduction declaration signal. Once the activation signal is generated, it automatically moves to the 0mm position.

[0050] Phase Two: First, the modified program was applied to the exit coil trolley area of ​​No. 1 rolling mill to debug the program's position and correct the activation conditions. After achieving satisfactory control results, it was applied to the entrance coil trolley of No. 1 rolling mill and the two trolleys of No. 2 rolling mill.

[0051] Phase Three: Within a month of the project improvements, the operation and stopping positions of the four trolleys were tracked using MICA's TRACE software. At the same time, the stopping time of the trolleys was analyzed and summarized to ensure the final improvement effect was good! Comparison before and after the modification: (The production time for different specifications of steel coils varies, so it is expressed as a percentage) Previously: Winder stop time (over 80%), winder out-of-winder time (20%) After that: winding machine downtime (over 5%), winding machine outtime (95%).

[0052] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A coil trolley device for anti-corrosion spraying, comprising a tractor (1) and a steel coil carrier (2), wherein the tail end of the tractor (1) and the front end of the steel coil carrier (2) are connected by a traction pin, characterized in that: The bottom of the tractor (1) is fixedly equipped with a positioning module (3), and the bottom of the steel coil carrier (2) is fixed with a double wheel set (4). The double wheel set (4) consists of two casters of the same size, and the two casters are arranged in parallel. The chassis of the steel coil carrier (2) is equipped with auxiliary parking components (5) on both sides. The auxiliary parking component (5) includes a long steel bar (501). One end of the long steel bar (501) is hinged to one side of the chassis of the steel coil carrier (2). The other end of the long steel bar (501) is equipped with a high-friction caster (502). A hydraulic pump (503) is fixedly installed on one side of the chassis of the steel coil carrier (2). The output end of the hydraulic pump (503) is connected to a hydraulic rod (504) through a pipeline. The fixed end of the hydraulic rod (504) is hinged to one side of the chassis of the steel coil carrier (2) through a hinge. The telescopic end of the hydraulic rod (504) is hinged to the middle of the long steel bar (501) through a hinge.

2. The trolley device for anti-corrosion spraying according to claim 1, characterized in that: The distance between the two casters of any double wheel set (4) is the same, and the casters of the double wheel set (4) are steel caster structures.

3. The roll-up trolley device for anti-corrosion spraying according to claim 1, characterized in that: The casters at the bottom of the tractor (1) are all swivel casters, and each caster has an independent caster lock.

4. The roll-up trolley device for anti-corrosion spraying according to claim 1, characterized in that: The hydraulic pump (503) is equipped with a remote signal control chip, which is connected to a remote control terminal.

5. A trolley device for anti-corrosion spraying according to claim 1, characterized in that: The surface of the high-friction caster (502) is made of polyurethane material.

6. A roll-up trolley device for anti-corrosion spraying according to claim 1, characterized in that: The hinge point between the telescopic end of the hydraulic rod (504) and the middle part of the long steel bar (501) is located at the center of the line connecting the hinge points at both ends of the long steel bar (501).

7. A roll-up trolley device for anti-corrosion spraying according to claim 1, characterized in that: The long steel bar (501) can rotate around the end that is hinged to the chassis by the extension and retraction drive of the hydraulic rod (504); The angle between the long steel bar (501) and the steel coil carrier (2) when the long steel bar (501) rotates is 15° to 30°.

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