High-temperature-resistant split type alloy baking transport trolley

Abstract

The utility model discloses a high-temperature-resistant split type alloy baking transport trolley which is characterized by comprising a trolley body, and the trolley body comprises a frame, a bottom plate and wheels. A hopper is arranged above the bottom plate, and a discharging opening is formed in the position, corresponding to an opening in the lower portion of the hopper, below the bottom plate. A driving unit is arranged in front of the bottom plate, and a discharging unit is arranged behind the bottom plate. The hopper is in bolt fit with the vehicle body, and a heat insulation pad is arranged between the hopper and the vehicle body. According to the scheme, the problems that a hopper of a traditional transport vehicle cannot be replaced, thermal deformation is serious, and discharging precision is low are solved, and the service life of a product is greatly prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology, specifically relating to a high-temperature resistant split-type alloy baking and transport trolley. Background Technology

[0002] In the transfer of high-temperature alloy materials in the metallurgical industry, rail-mounted transport vehicles are commonly used. Existing transport vehicles are integral welded structures. During use, especially for transporting alloy barbecue materials, these vehicles generally suffer from the following technical defects: Structural deformation: Under prolonged exposure to temperatures of 400-600℃ and loads of approximately 4 tons, downward deflection occurs in the middle of the vehicle body (measured deformation > 15mm / year), leading to track misalignment and abnormal wheel wear; Difficult maintenance: The existing hoppers are welded to the vehicle body, requiring overall maintenance (≥ 8 hours) to replace the hoppers, severely impacting production efficiency; Safety risks: Traditional braking systems experience a 40% reduction in braking force at high temperatures, with a full-load braking distance > 500mm, easily leading to collisions.

[0003] In summary, there is an urgent need for a new type of transport vehicle to solve the aforementioned problems. This invention addresses these pain points by achieving reliable transport operations under high-temperature conditions through synergistic innovations in a modular design, reinforced frame structure, precise material feeding control, and multiple thermal protection systems. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature resistant, split-type alloy baking and transport trolley to solve the problems in the prior art.

[0005] This utility model is achieved through the following technical solution: a high-temperature resistant split-type alloy baking and transport trolley, characterized in that,

[0006] The vehicle includes a body, which comprises a frame, a floor, and wheels. A hopper is positioned above the floor, and a discharge port is positioned below the floor, corresponding to the lower opening of the hopper. A drive unit is positioned in front of the floor, and a discharge unit is positioned behind the floor. The drive unit includes a drive motor with a brake reducer, and a drive gear is positioned at the output end of the brake reducer. A driven gear is positioned on the axle of each wheel, and the drive gear and the driven gear are engaged through a transmission gear. The discharge unit includes an electric push rod. A discharge valve plate is positioned inside the discharge port, and the discharge valve plate is engaged with the discharge port through a rotating shaft. A discharge arm is positioned at the extended end of the rotating shaft, and the upper end of the discharge arm is hinged to the front end of the electric push rod. The hopper is bolted to the vehicle body, and a heat insulation pad is positioned between the hopper and the vehicle body.

[0007] Furthermore: the frame is welded to the base plate; the wheels are fitted with wheel seats on the frame via axles.

[0008] Furthermore: the drive motor is connected to the vehicle body via a bracket; the electric push rod is rotatably connected to the bracket fixed on the vehicle body.

[0009] Furthermore: the hopper has an inverted trapezoidal structure, and the inside of the hopper is lined with heat-resistant plates.

[0010] Furthermore: the transmission gears are coupled to the vehicle body via bearing housings.

[0011] The beneficial effects of this utility model are:

[0012] 1. The split hopper and bolt connection design, combined with the heat insulation pad structure, allows for quick hopper replacement, greatly improving maintenance efficiency;

[0013] 2. The reinforced frame and gear transmission system reduce the annual deformation of the vehicle body to less than 3mm and extend the wheel life by more than 3 times.

[0014] 3. The variable frequency motor and brake reducer work together to form a braking system, which shortens the braking distance to 300mm and reduces the braking performance attenuation rate to <5%. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the vehicle body structure;

[0017] Figure 3 A schematic diagram of the vehicle's underbody structure viewed from below;

[0018] Figure 4 This is a schematic diagram of the hopper structure;

[0019] Figure 5 This is a schematic diagram of the material feeding unit structure;

[0020] Figure 6 This is a side view of the material feeding unit.

[0021] Figure 7 This is a schematic diagram of the drive unit structure.

[0022] The attached figures are labeled as follows:

[0023] 1 is the vehicle body, 11 is the frame, 12 is the floor plate, 13 is the wheel, and 14 is the reinforcing rib plate;

[0024] 2 is the hopper, 20 is the discharge port, 21 is the heat insulation pad, and 22 is the heat-resistant lining plate;

[0025] 3 is the drive unit; 31 is the drive motor; 32 is the brake reducer; 33 is the drive gear; 34 is the transmission gear; and 35 is the driven gear.

[0026] 4 is the feeding unit; 41 is the electric push rod; 42 is the feeding valve plate; 43 is the rotating shaft; 44 is the feeding arm.

[0027] 5 is a temperature sensor. Detailed Implementation

[0028] Reference Appendix Figure 1-7 This utility model discloses a high-temperature resistant split-type alloy baking and transport trolley.

[0029] The vehicle includes a body 1, which includes a frame 11, a floor 12, and wheels 13; the floor 1 is welded to the frame, and the wheels are fixed to the vehicle body by wheel seats.

[0030] A hopper 2 is provided above the base plate 12, and a discharge port 20 is provided below the base plate at a position corresponding to the lower opening of the hopper.

[0031] A drive unit 3 is provided at the front of the base plate, and a feeding unit 4 is provided at the rear of the base plate;

[0032] The drive unit 3 includes a drive motor 31 with a brake reducer 32, and a drive gear 33 is provided at the output end of the brake reducer; a driven gear 35 is provided on the axle of the wheel, and the drive gear and the driven gear cooperate through a transmission gear 34.

[0033] The feeding unit 4 includes an electric push rod 41; a feeding valve plate 42 is provided in the feeding port, the feeding valve plate is engaged with the feeding port through a rotating shaft 43, and a feeding arm 44 is fixedly provided at the extended end of the rotating shaft located outside the discharge port, the upper end of the feeding arm is hinged to the front end of the electric push rod.

[0034] The hopper is bolted to the vehicle body, and a heat insulation pad 21 is provided between the hopper and the vehicle body.

[0035] Preferably, a flange is provided below the hopper, and a reinforcing frame is provided above the discharge port. The flange and the reinforcing frame are fitted together and fixed with bolts. A heat insulation gasket is placed between the flange and the reinforcing frame.

[0036] Preferably, the frame is welded to the base plate; the wheels rotate with wheel seats mounted on the frame via axles.

[0037] Preferably, the drive motor is fitted to the vehicle body via a bracket; the electric push rod is rotatably fitted to the bracket fixed on the vehicle body.

[0038] Preferably, the hopper has an inverted trapezoidal structure, and a heat-resistant lining plate 22 is provided inside the hopper. The heat-resistant lining plate is made of ceramic material or refractory material, etc., and is fixed inside the hopper by bolts.

[0039] Preferably, the transmission gear shaft at the center of the transmission gear is fitted to the vehicle body via a bearing housing.

[0040] Preferably, a temperature sensor 5 is also installed in the wheel seat where the wheel mates with the vehicle body.

[0041] Preferably, multiple reinforcing ribs are provided on the underside of the vehicle body's floor. The reinforcing ribs are arranged in pairs, with the two reinforcing ribs forming a 90-degree angle and their tips pointing towards the material outlet at the center of the floor.

[0042] Example: Car body frame material preparation: The main frame is made of Q345B steel plate (40mm thick), and the stiffening plates are made of Q235B steel plate (20mm thick). Cutting and blanking: A CNC plasma cutting machine is used, and the main beam dimensions are 1500×800×40mm (length×width×thickness).

[0043] Body frame welding and assembly: The frame and base plate are welded using a K-type bevel weld (bevel angle 60°), and ER50-6 welding wire (diameter 1.2mm) is used. Radial stiffeners are positioned at a 45° angle to the centerline, spaced 280mm apart, and welded continuously on both sides (weld height 8mm). After welding, vibration aging treatment is performed (frequency 50Hz, duration 30 minutes) to eliminate welding stress.

[0044] Heat treatment of the car body frame: Overall annealing process: Heating to 650℃ at a rate of 80℃ / h, holding for 2 hours, then furnace cooling to below 300℃ before unloading.

[0045] Installation of heat-resistant lining plates for hoppers: Cut ZG40Cr25Ni20 lining plates (15mm thick) into 300×300mm units and fix them to the inner wall of the hopper with M16 bolts (200mm spacing). Fill the joints of the lining plates with high-temperature sealant (temperature resistance ≥1000℃) and the joint width ≤2mm.

[0046] Hopper split connection structure assembly: The hopper flange is aligned with the vehicle body floor plate, and 8 sets of HS10.9 grade bolts (M20×120) are inserted with a pre-tightening torque of 450 N·m. The heat insulation gasket uses an asbestos sealing gasket (3mm thick), coated with graphite lubricant before installation, and the thickness is maintained at 2.5±0.2mm after compression.

[0047] The drive system transmits power via a variable frequency drive (VFD) motor, which connects to a brake reducer (KAF167DRN180M4 BE25 / 36.86). The brake reducer drives a transmission shaft (40Cr material, heat-treated HRC28-32). Both ends of the transmission shaft mesh with wheel axle gear pairs via involute splines (module 2.5, 24 teeth). The gear pairs employ a helical gear meshing design to ensure smooth transmission and low noise. Both ends of the wheel axle are supported in cast iron bearing housings using double-row tapered roller bearings. The bearing housings are made of HT250 cast iron with a flatness of ≤0.1mm / m. The wheel treads are hardened, providing both wear resistance and fatigue resistance when in contact with the rail.

[0048] The feeding unit uses an electric actuator (or an electro-hydraulic actuator) as the actuating mechanism. The piston rod end is connected to the valve plate linkage mechanism via a spherical bearing, converting linear motion into rotational motion of the valve plate shaft (material 42CrMo, heat-treated to HRC35-40). Both ends of the valve plate shaft are supported by angular contact ball bearings, ensuring flexible rotation and no axial movement. The valve plate opening is controlled by proximity switches. A proximity switch is installed at each valve plate position. When the valve plate reaches the open or closed position, the proximity switch receives a signal to stop the electro-hydraulic propulsion.

[0049] In the feeding unit, the push rod stroke is calibrated to 0-280mm, which can achieve a full stroke action time of ≤15s under no-load conditions and ≤20s under a load of 4 tons.

[0050] Before operation, check the valve plate position, wheel axle temperature (<50℃), and brake status. After normal operation, drive the trolley to the loading position for material loading. After loading, drive to the unloading position and use an electric push rod to control the opening of the discharge valve plate to adjust the material flow. The braking unit adopts an integrated brake-reducer structure (IP66 protection level), with a built-in disc brake module (braking torque 2000 N·m ± 5%). The brake disc (material GGG50, hardness HB220-250) is directly integrated into the reducer output shaft end through a spline interference fit (H7 / r6, interference 0.03-0.05 mm). The friction plates are made of carbon fiber reinforced composite material, automatically compensating for clearance when wear > 0.3 mm.

[0051] Temperature monitoring module: A platinum resistance sensor is embedded in the temperature measuring hole of the wheel axle bearing housing to collect the bearing temperature in real time; an infrared thermometer monitors the surface temperature of the brake pads in a non-contact manner.

[0052] Field application test data: The ferromanganese alloy transfer line underwent a 72-hour continuous test: Structural performance: Thermal deformation: The central part of the car body deflected downwards by 0.5mm (compared to 2.8mm for the conventional structure during the same period). Hopper replacement time: 26 minutes (including bolt removal / installation and gasket replacement).

[0053] Field application test data, control accuracy: feed flow fluctuation: ±0.9% (actual measurement 9.91-10.09kg / s when set value is 10kg / s) Emergency braking distance: braking distance 275mm when load is 4 tons / speed is 30m / min

[0054] Verification of key process parameters. Comparison test of stiffener welding angles: 45° angled design vs. conventional 90° vertical design; after a 12-hour load test at 600℃, the stress concentration factor of the 45° structure decreased by 37%. Gasket compression rate test: when a 3mm thick asbestos gasket is compressed to 2.5mm, the pressure on the sealing surface reaches 1.2MPa, achieving zero leakage.

Claims

1. A high-temperature resistant, split-type alloy baking and transport trolley, characterized in that, Includes a vehicle body, which includes a frame, a floor, and wheels; A hopper is provided above the base plate, and a discharge port is provided below the base plate at a position corresponding to the lower opening of the hopper; A drive unit is located at the front of the base plate, and a feeding unit is located at the rear of the base plate. The drive unit includes a drive motor with a brake reducer, and a drive gear is provided at the output end of the brake reducer; a driven gear is provided on the axle of the wheel, and the drive gear and the driven gear are engaged through a transmission gear. The feeding unit includes an electric push rod; a feeding valve plate is provided in the feeding port, the feeding valve plate is engaged with the feeding port through a rotating shaft, and a feeding arm is provided at the extended end of the rotating shaft, the upper end of the feeding arm is hinged to the front end of the electric push rod. The hopper is bolted to the vehicle body, and a heat insulation pad is provided between the hopper and the vehicle body.

2. The high-temperature resistant split-type alloy baking and transport trolley according to claim 1, characterized in that, The frame is welded to the base plate; the wheels are connected to the frame via axles.

3. The high-temperature resistant split-type alloy baking and transport trolley according to claim 1, characterized in that, The drive motor is connected to the vehicle body via a bracket; the electric push rod is rotatably connected to the bracket fixed on the vehicle body.

4. The high-temperature resistant split-type alloy baking and transport trolley according to claim 1, characterized in that, The hopper has an inverted trapezoidal structure and is lined with heat-resistant plates inside.

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