A transfer car for a kiln

Abstract

The utility model relates to kiln material transfer technical field, and disclose a kind of kiln is used to ferry car, including box, ball hinge support, variable pitch spring, thermal expansion compensator etc., mainly solve the problem of existing technology high temperature transmission jam and article easy breakage through the thermal expansion compensator of the both ends of rotating lever, utilize bellows telescopic to promote gear transverse movement under high temperature, automatic compensation the meshing gap generated by rack expansion, avoid jamming;Buffer plate is realized universal swing by ball hinge support to compensate track deviation, cooperate with guide column to limit lateral displacement, while variable pitch spring absorbs vertical impact when starting and stopping, reduce material damage due to inertial shaking, sensor detects position signal control deceleration parking, further guarantee material safety.

Description

Technical Field

[0001] This utility model relates to the field of kiln material transfer technology, and in particular to a kiln shuttle vehicle. Background Technology

[0002] Kiln transfer cars are key equipment in kiln production lines for material transfer. Their main function is to transport billets, finished products, and other materials between the kiln and external environments or between different processes, making them particularly suitable for high-temperature operating environments such as tunnel kilns and shuttle kilns. Their core structure typically includes a high-temperature resistant frame, drive system, load-bearing platform, and heat insulation protection devices. Some models are equipped with lifting mechanisms to adapt to different kiln heights. During operation, the transfer car needs to operate stably in high-temperature environments; therefore, the frame is often made of heat-resistant alloys or refractory materials, and the drive system has anti-jamming and high-temperature protection capabilities. Their technical features focus on high-temperature resistance, positioning accuracy, carrying efficiency, and automation levels, including optimized heat insulation structures, integrated intelligent control systems, and upgraded drive methods to improve production continuity and safety.

[0003] The prior art announcement number CN219415677U discloses a kiln transfer car, including a main body. A slider is fixedly connected to the lower end of the main body, and a slide rail is slidably connected to the inner wall of the slider. A telescopic column is fixedly connected inside the main body, and a baffle is fixedly connected to the upper end of the telescopic column. A heater is fixedly connected inside the main body near the baffle, and a heating wire is fixedly connected to the upper end of the heater. A diamond plate is fixedly connected to the upper end of the heating wire. A first motor is fixedly connected inside the main body near the lower end of the heater, and a belt is connected to the lower end of the first motor. A rotating column is rotatably connected to the inner wall of the belt, and a wheel is rotatably connected to one end of the rotating column. A support column is rotatably connected to the outer wall of the rotating column. This kiln transfer car has the advantages of automatic car entry and exit, protection of the transferred items, and preheating of the transferred items, thus effectively solving the problems and shortcomings of existing devices.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist:

[0005] 1. The existing technology uses belt drive and rigid gear rack meshing, without a thermal expansion compensation mechanism. When the high temperature in the kiln area causes the rack to expand, the meshing gap between the gear and the rack cannot be automatically adjusted, which can easily cause jamming and affect the normal operation of the shuttle car.

[0006] 2. Existing technology uses telescopic columns to drive baffles for rigid protection, without setting up a buffer and shock absorption structure. The inertial impact generated when the shuttle car starts or stops may cause unshaped materials to slide, tip over or break, and the protection effect is limited, especially for precision or fragile materials. Utility Model Content

[0007] The technical problem to be solved by this utility model is that the existing technology has the disadvantages of high temperature transmission jamming and easy damage to the items. To this end, we propose a shuttle car for kilns.

[0008] To achieve the above objectives, this application adopts the following technical solution: a kiln shuttle car, comprising a box body, a buffer plate installed below the box body, ball joint supports symmetrically installed at the four corners of the bottom of the buffer plate, a guide post installed at the center of the bottom of the buffer plate, a variable pitch spring sleeved on the outer periphery of the guide post, a base installed at the bottom end of the guide post, a gear bearing installed at the lower part of the base, a rotating rod installed on the inner ring of the gear bearing, thermal expansion compensators installed at both ends of the rotating rod, one end of the thermal expansion compensator connected to the gear bearing, a gear installed at the other end of the thermal expansion compensator, a limit wheel installed on the outer side of the gear, and the upper and lower end faces of the gear meshing with a rack.

[0009] Preferably, the ball joint support allows the buffer plate to swing in all directions.

[0010] Preferably, the thermal expansion compensator is an axial bellows-type expansion joint structure.

[0011] Preferably, the connection direction of the gear bearing is perpendicular to the forward direction of the shuttle vehicle.

[0012] Preferably, the upper ball joint of the ball joint support is connected to the lower surface of the buffer plate, and the lower ball socket of the ball joint support is fixedly connected to the base plate.

[0013] Preferably, a heater is installed on the inner side of the box, and there is a gap between the upper end face of the heater and the interlocking placement plate of the box.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] In this invention, thermal expansion compensators at both ends of the rotating rod are used to push the gear to move laterally under high temperature by the expansion and contraction of the bellows, which automatically compensates for the meshing gap caused by the expansion of the rack and prevents jamming; the buffer plate achieves universal swing through the ball joint support to compensate for track deviation, and works with the guide column to limit lateral displacement. At the same time, the variable pitch spring absorbs the vertical impact during start-up and stop, reducing material damage due to inertial shaking. The sensor detects the position signal to control deceleration and stop, further ensuring material safety. Attached Figure Description

[0016] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the overall planar structure of this utility model;

[0020] Figure 4 This is a partial exploded structural diagram of the present invention.

[0021] Legend:

[0022] 1. Housing; 2. Heater; 3. Buffer plate; 4. Ball joint support; 5. Guide column; 6. Pitch spring; 7. Base plate; 8. Gear bearing; 9. Rotating rod; 10. Thermal expansion compensator; 11. Gear; 12. Limit wheel; 13. Rack. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Reference Figure 1 As shown, this utility model provides a technical solution: a kiln shuttle car, including a box body 1, a horizontally arranged heater 2 installed on the inner side of the box body 1, a buffer plate 3 installed below the box body 1, ball joint supports 4 symmetrically installed at the four corners of the bottom of the buffer plate 3, a guide column 5 extending vertically from the center of the bottom of the buffer plate 3, a variable pitch spring 6 sleeved on the outer periphery of the guide column 5, a base 7 installed at the bottom end of the guide column 5, a gear bearing 8 installed at the lower part of the base 7, a rotating rod 9 connected to the inner ring of the gear bearing 8, thermal expansion compensators 10 installed at both ends of the rotating rod 9, one end of the thermal expansion compensator 10 connected to the gear bearing 8, a gear 11 installed at the other end of the thermal expansion compensator 10, a limit wheel 12 installed on the outer side of the gear 11, and the upper and lower end faces of the gear 11 meshing with a rack 13.

[0025] Reference Figures 1-3As shown in this embodiment: Box 1, as the top-level load-bearing unit of the overall structure, has a rectangular box design and is formed by welding steel plates. The two side walls of Box 1 can be optimized and symmetrically opened with conical heat dissipation holes. These heat dissipation holes are truncated cones with a wider upper end and a narrower lower end, with the upper end diameter larger than the lower end diameter. They are evenly distributed along the side walls of Box 1 and are inclined to form a channel for hot airflow to rise, which can effectively accelerate the flow of hot air in Box 1, improve heat dissipation efficiency, and make the temperature distribution in the preheating chamber uniform. A horizontally arranged heater 2 is fixedly installed on the lower inner side of Box 1 by bolts. An interlocking placement plate is set above the heater 2. The placement plate is positioned by an L-shaped slot on the side wall of Box 1, so that the placement plate and the inner wall of Box 1 form a tight fit. The distance between the placement plate and the upper end face of the heater 2 is 100mm to form a material preheating space. The lower end face of the heater 2 is isolated from the bottom of Box 1 by an aluminum silicate fiber heat insulation pad. The edge of the heat insulation pad is bonded with high-temperature resistant adhesive to prevent the heat generated by the heater 2 from being transferred to the bottom of Box 1, so as to avoid the bottom of Box 1 from overheating and affecting the normal operation of the components below.

[0026] A buffer plate 3 is welded to the bottom of the box 1. The buffer plate 3 is a rectangular thin plate structure. The material of the buffer plate 3 has a certain strength and toughness to meet the requirements of load bearing and buffering. The upper surface of the buffer plate 3 is rigidly fixed to the bottom of the box 1 through a full welding process to jointly bear the weight of the materials above. The lower surface of the buffer plate 3 has four corner protrusions, and four sets of ball joint supports 4 are installed with screws. The ball joint supports 4 are symmetrically distributed at the four corner protrusions of the lower surface of the buffer plate 3. The upper ball head of each ball joint support 4 is connected to the protrusion on the lower surface of the buffer plate 3, and the lower ball socket is fixedly connected to the structure below. The ball joint supports 4 allow the buffer plate 3 to swing omnidirectionally within a range of 10°. This omnidirectional swing characteristic effectively compensates for track deviation, so that even if the shuttle car encounters uneven or deviated tracks during operation, it can maintain stability through the swing of the buffer plate 3. At the same time, the ball joint supports 4 also bear the responsibility of transmitting horizontal... The load transfers the vertical force on the buffer plate 3 to the structure below. A guide post 5 is vertically welded to the center of the bottom of the buffer plate 3. The main function of the guide post 5 is to limit the lateral displacement of the buffer plate 3. The cooperation between the guide post 5 and the structure below ensures the horizontal movement accuracy of the buffer plate 3, thereby guaranteeing the precision of material positioning. A variable-pitch spring 6 is fitted around the outer periphery of the guide post 5. The spring axis of the variable-pitch spring 6 coincides with the axial direction of the guide post 5. This coaxial arrangement allows the variable-pitch spring 6 to evenly bear the vertical force from the buffer plate 3. Simultaneously, the two ends of the variable-pitch spring 6 are ground flat to ensure uniform force distribution. The guide post 5 and the variable-pitch spring 6 work together to provide vertical elastic support and vibration damping. At the moment the shuttle car starts or stops, the variable-pitch spring 6 absorbs impact energy through compression or stretching deformation, reducing the vertical vibration transmitted to the material and protecting it from damage. To further optimize the performance of the guide post 5, a spiral oil groove can be optimized on the optical axis section of the guide post 5 to store lubricating grease, reduce friction, decrease wear, and extend the service life of the component.

[0027] A base plate 7 is welded to the bottom of the guide column 5. The base plate 7 has a rectangular thick plate structure with high strength and rigidity. As the supporting foundation of the transmission system, the base plate 7 can bear the weight of the entire vehicle and the driving force. The top of the base plate 7 supports the buffer plate 3 through a ball joint support 4. The lower ball socket of the ball joint support 4 is fixed to the top of the base plate 7 and connects with the upper ball head below the buffer plate 3 to achieve flexible support between the buffer plate 3 and the base plate 7. In order to improve the bending strength of the base plate 7, triangular reinforcing ribs can be added at the connection between the horizontal plate and the vertical plate of the base plate 7 to distribute the bending moment borne by the base plate 7 and improve the stability of the structure. At the same time, dust discharge grooves can be optimized to be opened at the bottom of the base plate 7. The dust discharge grooves are arranged at intervals along the length of the bottom of the base plate to facilitate the cleaning of track dust and prevent dust from accumulating at the bottom of the base plate and affecting the normal operation of the shuttle car.

[0028] Two sets of gear bearings 8 are installed at the bottom of the base plate 7 by screws. The connection direction of the gear bearings 8 is perpendicular to the forward direction of the shuttle car. The rotating end of the inner ring of the gear bearing 8 is connected to the rotating rod 9 by a flat key. The gear bearing 8 supports the rotation of the rotating rod 9 and bears the radial load generated by the rotating rod 9 during the rotation, providing support for the stable rotation of the rotating rod 9. The rotating rod 9 is horizontally arranged below the base plate 7. Thermal expansion compensators 10 are installed at both ends of the rotating rod 9. The thermal expansion compensators 10 have an axial bellows-type telescopic structure design and have a certain degree of telescopic elasticity. The shaft section of the rotating rod 9 can be optimized to add torque monitoring patches to monitor the torque change of the rotating rod 9 in real time during the transmission process. Gears 11 are also installed on both sides of the rotating rod 9. One end of the thermal expansion compensator 10 is connected to the gear bearing 8, and the other end of the thermal expansion compensator 10 is connected to the shaft hole of the gear 11. Limiting wheels 12 are installed on the outer side of the gear 11. The limiting wheels 12 are used to limit the lateral displacement of the gear 11. The upper and lower end faces of the gear 11 are meshed with racks 13. The racks 13 are horizontally arranged on both sides of the kiln track and extend along the direction of travel. The bottom surface of the racks 13 is fixed to the track base with bolts. The racks 13 serve as a fixed transmission mechanism, providing the meshing reaction force of the gears 11 to drive the shuttle car forward. The thermal expansion compensator 10 is used to compensate for the meshing clearance between gear 11 and rack 13. Specifically, when rack 13 expands due to high temperature, the distance between the upper and lower racks 13 may change, affecting the meshing connection between gear 11 and rack 13, and in severe cases, causing jamming. The thermal expansion compensator 10 is connected to the support structure of gear bearing 8, and can push gear 11 to move laterally according to the expansion of rack 13, thereby adjusting the clearance between gear 11 and rack 13 and ensuring that they always maintain a good meshing state.

[0029] Working principle: Through the thermal expansion compensators 10 at both ends of the rotating rod 9, the bellows expands and contracts at high temperature to push the gear 11 to move laterally, automatically compensating for the meshing gap caused by the expansion of the rack 13 and preventing jamming; the buffer plate 3 achieves universal swing through the ball joint support 4 to compensate for track deviation, and works with the guide column 5 to limit lateral displacement. At the same time, the variable pitch spring 6 absorbs the vertical impact during start-up and stop, reducing material damage due to inertial shaking. The sensor detects the position signal to control deceleration and stop, further ensuring material safety.

[0030] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A shuttle vehicle for a kiln, characterized in that, The device includes a housing, with a buffer plate installed at the bottom. Ball joint supports are symmetrically installed at the four corners of the bottom of the buffer plate. A guide post is installed at the center of the bottom of the buffer plate. A variable-pitch spring is fitted around the outer periphery of the guide post. A base is installed at the bottom of the guide post. A gear bearing is installed at the lower part of the base. A rotating rod is installed on the inner ring of the gear bearing. Thermal expansion compensators are installed at both ends of the rotating rod. One end of the thermal expansion compensator is connected to the gear bearing, and the other end of the thermal expansion compensator is equipped with a gear. A limit wheel is installed on the outer side of the gear. The upper and lower end faces of the gear mesh with a rack.

2. The kiln shuttle car according to claim 1, characterized in that, The ball joint support allows the buffer plate to swing in all directions.

3. The kiln shuttle car according to claim 1, characterized in that, The thermal expansion compensator is an axial bellows-type expansion structure.

4. A shuttle car for a kiln according to claim 1, characterized in that, The connection direction of the gear bearing is perpendicular to the forward direction of the shuttle vehicle.

5. A shuttle car for a kiln according to claim 1, characterized in that, The upper ball joint of the ball joint support is connected to the lower surface of the buffer plate, and the lower ball socket of the ball joint support is fixedly connected to the base plate.

6. A shuttle car for a kiln according to claim 1, characterized in that, A heater is installed inside the box, and there is a gap between the upper surface of the heater and the interlocking placement plate of the box.

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