3.3.4 台车及驱动系统台车车身由耐热保温层、车架及行走机构三部分组

3.3.4 Trolley and drive system The <br>body of the trolley is composed of three parts: heat-resistant insulation, frame and walking mechanism. The trolley is designed to be of high load-bearing type, which satisfies the normal operation of the trolley under long-term high temperature and full load. <br>▲ The heat-resistant insulation layer is made of composite structure, and the upper layer is made of high-strength high-alumina brick, that is, it has enough pressure resistance and good high temperature resistance; the middle layer is made of light clay brick as the heat insulation layer ; The lower layer is a light-weight insulation brick, which is used as an insulation layer to ensure that the heat is not conducted to the bottom of the trolley (insulating function), reducing the heat loss of the furnace. <br>▲ The frame is welded by section steel and steel plate, the design has heat-resistant deformation structure, high-quality steel is used, and the section steel and steel plate are welded together. In accordance with GB50205-2011 "Code for Welding of Steel Structures" and GB50661-2001 "Code for Acceptance of Construction Quality of Steel Structures". <br>▲ The frame is composed of cross beam, longitudinal beam and table top steel plate. In order to reduce the height of the trolley as much as possible, and ensure that the trolley has sufficient strength and rigidity under heavy load. The beam adopts a large-scale steel structure, which can effectively transfer the weight of the trolley to the longitudinal beam. The longitudinal beam also adopts the shape steel, which can effectively transfer the weight of the trolley to the wheels, and can withstand the impact of heavy loads. <br>▲ The frame of the frame is a heat-resistant cast steel (ZG30Cr24Ni7Si2N) frame with a thickness of ≥20 mm to ensure long-term high temperature without deformation. It is fixed by bolts to effectively protect the refractory bricks on the trolley. <br>▲ Heat-resistant cast iron sand sealing knives are installed on both sides of the frame to seal with the furnace body sand sealing groove. The sand-sealing knife is made of RQTSi4 heat-resistant cast iron, with a thickness ≥20 mm, which ensures long-term high temperature without deformation and is fixed by bolts. <br>▲ The trolley uses self-driving and self-driving mode of the front box. The reducer drives the trolley into and out of the furnace through the chain, and the operation is stable and reliable. Limits are set at the two ends of the trolley to prevent overtraveling. It can effectively prevent the back of the furnace body from hitting due to the running inertia of the trolley. <br>▲ There are limit stops at the two ends of the trolley to prevent overtravel. The trolley driving motor is equipped with an electromagnetic brake, which can effectively prevent the trolley from hitting the back of the furnace body due to the running inertia of the trolley.<br>▲ The trolley wheels are made of cast steel wheels, which are evenly distributed at the bottom of the trolley steel beam in multiple groups. The structural form of the trolley drive should fully consider the reliability of the trolley under long-term heavy load conditions.

3.3.4 Vehicles and drive systems<br>The body of the station wagon consists of heat-resistant insulation layer, frame and walking mechanism, and the platform is designed to be high-bearing, which meets the normal operation of the station car in the long-term high temperature and full load.<br>Heat-resistant insulation layer using a composite structure masonry, the upper layer using high-strength high-aluminum brick masonry, that is, there is enough pressure, but also have good high temperature performance, the middle layer uses light clay brick, as an insulation layer, the lower layer is a lightweight insulation brick, as a insulation layer, to ensure that heat does not conduct to the bottom of the platform car (play the role of thermal insulation), reduce the heat loss of the furnace.<br>The frame is welded by steel and steel plate, the design has a heat-resistant deformation structure, the selection of high-quality steel, with the type steel and steel plate group welding, the type steel and steel type between the use of plug-type front and back welding, with sufficient strength, better than GB50205-2011 Steel Structure Welding Specification, GB50661-2001 "Steel structure construction quality acceptance specification" requirements.<br>The frame consists of beams, girders and countertop steel plates. In order to minimize the height of the trolley, but also to ensure that the trolley under heavy load has sufficient strength and rigidity. Beams using large-scale steel structure, can effectively transfer the weight of the platform to the girder, the girder is also the use of steel, the weight of the platform can be effectively transferred to the wheels, can withstand the impact of heavy loads.<br>The frame frame is a heat-resistant cast steel (ZG30Cr24Ni7Si2N) border with a thickness of 20 mm, ensuring that long-term high temperature is not deformed, bolted to effectively protect the refractory bricks on the taiwan.<br>The two sides of the frame are fitted with heat-resistant cast iron sand sealers, which are sealed with the furnace body sand seal. The sand sealing knife uses RQTSi4 heat-resistant cast iron, thickness of 20 mm, to ensure that long-term high temperature is not deformed, bolted.<br>The platform car walking using the head box self-drive walking way, the gearbox through the chain to drive the taiwan car into the furnace and out of the oven, running smoothly and reliably. The limits of the two ends of the platform walk are limited, so as to put an end to the phenomenon of over-travel walking. It can effectively prevent impact on the rear of the furnace body due to the operating inertia of the station wagon.<br>In the two ends of the platform walking at the limit of the limit with the limit, to eliminate the phenomenon of over-travel walking. The drive motor is equipped with an electromagnetic brake to effectively prevent impact on the rear of the furnace body due to the operating inertia of the trolley.<br>The wheels of the trolley are made of cast steel wheels, which are evenly distributed in several groups at the bottom of the steel beams of the platform. The structural form of the trolley drive should take full account of the reliability of the station wagon in the long-term heavy duty conditions.

3.3.4 trolley and drive system<br>The trolley body is composed of heat-resistant insulation layer, frame and traveling mechanism. The trolley is designed as high load-carrying type, which can meet the normal operation of the trolley under long-term high temperature and full load conditions.<br>▲ the heat-resistant insulation layer is built with composite structure, and the upper layer is built with high-strength and high aluminum brick, which has enough pressure and good high temperature resistance; the middle layer is made of light clay brick, which is used as the insulation layer; the lower layer is made of light insulation brick, which is used as the insulation layer, to ensure that the heat is not transmitted to the bottom of the trolley (plays the role of insulation), and reduce the heat loss of the furnace.<br>▲ the frame is welded with section steel and steel plate. It is designed with heat-resistant deformation structure. High quality steel is selected and assembled with section steel and steel plate. The plug-in type welding is used between section steel and section steel, with sufficient strength, which is superior to the requirements of gb50205-2011 code for welding of steel structures and gb50661-2001 code for acceptance of construction quality of steel structures.<br>The frame is composed of crossbeam, longitudinal beam and mesa steel plate. In order to reduce the trolley height as much as possible, and ensure that the trolley has enough strength and rigidity under heavy load. The crossbeam adopts large-scale section steel structure, which can effectively transmit the weight on the trolley to the longitudinal beam. The longitudinal beam also adopts section steel, which can effectively transmit the weight on the trolley to the wheel, and can bear the impact of heavy load.<br>▲ the frame frame is made of heat-resistant cast steel (zg30cr24ni7si2n) frame with a thickness of ≥ 20 mm to ensure no deformation in high temperature for a long time. It is fixed by bolts to effectively protect the refractory bricks on the trolley.<br>▲ heat resistant cast iron sand sealing knife is installed on both sides of the frame to cooperate with the sand sealing groove of the furnace body for sealing. The sand sealing knife adopts rqtsi4 heat-resistant cast iron, with thickness ≥ 20 mm, to ensure long-term high temperature without deformation, and is fixed by bolts.<br>▲ the trolley is driven by the headstock, and the reducer drives the trolley into and out of the furnace through the chain, which is stable and reliable. A limited position shall be set at the limit of both ends of trolley travel to prevent over travel. The utility model can effectively prevent the rear part of the furnace body from colliding due to the operation inertia of the trolley.<br>▲ limit position shall be set at the limit of both ends of trolley travel to prevent over travel. The transmission motor of the trolley is equipped with electromagnetic brake, which can effectively prevent the rear part of the furnace body from being impacted due to the inertia of the trolley.<br>The wheels of the trolley are made of cast steel, which are evenly distributed at the bottom of the trolley steel beam in multiple groups. The structural form of trolley drive shall fully consider the reliability of trolley under long-term and heavy load conditions.<br>