A loading and unloading vehicle bearing platform for a sintering furnace

Abstract

The utility model relates to powder metallurgy equipment technical field, especially is a kind of sintering furnace with loading and unloading car bearing platform, including mobile frame, feeding plate, axle, inclined block support wheel type lifting transmission mechanism, screw rod lifting driving device, gear and rack driving driving device and guide rail.Axle is located on the mobile frame guide rail, and feeding plate and axle are overlapped by inclined block, support roller, and screw rod drives feeding plate to lift along the inclined plane;Gear and rack drive axle to feed along guide rail.The device solves the problem of unstable cam transmission thrust, ensures the stability of the bearing platform, reduces the breakage rate of green body, accurately feeds and protects graphite furnace bed, adapts to 2-10 meter specifications, and is suitable for powder compact sintering transfer.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy equipment technology, and in particular to a loading and unloading vehicle carrying platform for sintering furnaces. Background Technology

[0002] In the production operation of sintering furnace, the sintered products processed are mostly powder compacts. These powder compacts need to be transferred to the sintering furnace before sintering. However, due to the low strength of the compacts in the green stage, they are easily damaged by vibration during the transfer process, which will affect the qualification rate of the sintered products. Therefore, strict requirements are placed on the stable operation of the loading and unloading equipment. Among them, the core component of the loading and unloading car is the uppermost bearing platform, which is responsible for the key function of bearing the compacts and sending them into the designated position inside the furnace. However, the existing lifting transmission structure of the loading and unloading vehicle platform for sintering furnaces still has obvious defects. It generally adopts a cam mechanism transmission form, that is, the bottom plate of the loading plate is fixed with a stop, and the cam is connected to the rotating shafts on both sides of the axle. By applying a horizontal thrust to one side of the loading plate, the two will generate relative motion and drive the cam to rotate, which is then converted into a vertical lifting thrust to lift the loading plate. However, as the cam rotates, the angle between the force direction of the cam and the horizontal component will constantly change, resulting in the vertical lifting thrust being in a state of constant change. Even if the operator applies a constant horizontal thrust, it is impossible to maintain the stability of the vertical thrust, making it difficult to control the smooth lifting and lowering of the loading platform. In particular, with the increasing variety of sintering products, the specifications of the loading platform are correspondingly larger and longer. The lifting stability of the extended loading platform is even more difficult to control, and the required initial thrust is significantly increased. The existing structure can no longer meet the actual production requirements for the stability and adaptability of the loading platform. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model is proposed.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a loading and unloading vehicle platform for a sintering furnace, comprising a mobile frame, a loading plate, an axle, a lifting transmission mechanism, a lifting drive device, a travel drive device, and a guide rail; the axle is mounted on the guide rail of the mobile frame, and the loading plate is mounted on the axle; a lifting transmission mechanism and a lifting drive device are installed between the loading plate and the axle, the lifting transmission mechanism is used to convert the relative motion between the loading plate and the axle into the vertical lifting motion of the loading plate, and the lifting drive device is used to drive the loading plate and the axle to generate relative motion; a travel drive device is installed between the axle and the mobile frame, used to drive the axle to travel back and forth on the guide rail; the guide rail is used to guide the travel of the axle.

[0005] Preferably, the lifting transmission mechanism consists of multiple identical inclined block support wheel assemblies, each of which includes an inclined block and a support roller; several inclined blocks are evenly installed on both sides of the bottom of the loading plate, and corresponding support rollers are evenly installed on the outer side of the axle; the inclined blocks and support rollers always maintain an overlapping state, and the direction of the force between the inclined blocks and support rollers is always perpendicular to the surface of the inclined blocks.

[0006] Preferably, the axle is a frame structure, including two parallel long beams, which are fixedly connected by multiple short beams. The long beams are provided with end plates at both ends, with the rear end plate of the axle being the end plate. Multiple axle holes are evenly opened on each long beam, and wheel axles are inserted into the axle holes. Rolling bearings are assembled at both ends of the wheel axles as moving rollers.

[0007] Preferably, the lifting drive device adopts a screw drive structure, and a top block is fixedly connected to the end of the feeding plate away from the sintering furnace. A threaded hole is opened on the top block, and the screw is screwed into the threaded hole. The end of the screw is wrapped with a freely rotatable steel ball, and the steel ball abuts against the rear end plate of the axle.

[0008] Preferably, the inclined block is fixed to the bottom of the loading plate by a combination of threaded connection and pin connection, the support roller is installed on the axle, the axle is installed in the shaft hole of the axle, and the centers of all support rollers are kept on the same horizontal plane.

[0009] Preferably, the feeding plate is equipped with a stop block. When the feeding plate falls to its lowest point, the stop block is used to limit the extreme position of the support roller and prevent the inclined block of the feeding plate from disengaging from the support roller.

[0010] Preferably, the driving device is a rack and pinion transmission structure, including a long rack, a gear, a rocker arm, and a manual crank handle; the long rack is fixedly mounted on the axle and parallel to the direction of the long beam, the gear meshes with the long rack and is fixedly mounted on the rocker arm, the rocker arm is rotatably supported by two bearing supports, the bearing supports are fixed to the mobile frame, and the manual crank handle is mounted on the free end of the rocker arm.

[0011] Preferably, the guide rail includes a fixed guide rail and a movable guide rail; the fixed guide rail is fixedly installed on the movable frame and is used to support the movement of the axle on the movable frame; the movable guide rail is made of cold-rolled strip steel and has a guide groove milled on it, so that it can be pushed onto the graphite furnace bed in the furnace as a guide pad during operation.

[0012] Preferably, the length of the support platform is 2 to 10 meters, and the core supporting component of the support platform is the loading plate. The bottom of the loading plate is raised and lowered by the cooperation of the inclined block and the support roller of the axle.

[0013] Preferably, the movable guide rail is used to guide the axle into the furnace, while avoiding direct pressure on the graphite furnace bed by the axle and the material it carries, which could cause damage. The movable guide rail and the fixed guide rail can cooperate to form a complete driving guide path for the axle.

[0014] The beneficial effects of this utility model are:

[0015] The inclined support wheel-type lifting transmission structure maintains a constant lifting thrust, ensuring smooth operation of the lifting platform and effectively preventing damage to the green billets during transport due to vibration or unstable lifting. This significantly improves the yield rate of sintered products. Simultaneously, the systematic design of the axle, lifting drive, travel drive, and guide rails ensures stable material transport and precise delivery to designated positions within the furnace, enhancing the accuracy and efficiency of loading and unloading operations. Furthermore, the dedicated moving guide rails provide reliable guidance for the axle's entry into the furnace and prevent direct pressure from the axle and its load on the graphite hearth, protecting internal furnace components. The platform is available in various lengths from 2 to 10 meters, flexibly adapting to different types and batches of sintered products, further enhancing the device's versatility and applicability, and better meeting diverse production needs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the left-side view structure.

[0019] Figure 3 This utility model Figure 1 A top-view structural diagram;

[0020] Figure 4 This is a schematic diagram of the cam transmission mechanism of this utility model.

[0021] Reference numerals in the attached diagram: 1. Inclined block; 2. Support roller; 3. Stop block; 4. Feeding plate; 5. Short beam; 6. Moving roller; 7. Rear end plate; 8. Steel ball; 9. Top block; 10. Lead screw; 11. Long beam; 12. Wheel axle; 13. Manual crank handle; 14. Rocker arm; 15. Bearing support; 16. Moving frame; 17. Gear; 18. Rack; 19. Fixed guide rail; 20. Moving guide rail. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example

[0026] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a loading and unloading vehicle carrying platform for a sintering furnace.

[0027] Specifically, to solve the above-mentioned technical problems, this utility model provides the following technical solution: a loading and unloading vehicle carrying platform for a sintering furnace, wherein the mobile frame 16 is the basic support component of the entire device, and all core functional structures are directly or indirectly installed on the mobile frame 16. The fixed guide rail 19 is installed on the upper surface of the mobile frame 16 and remains relatively fixed to the mobile frame 16; the mobile guide rail 20 needs to be pushed onto the graphite furnace bed inside the sintering furnace during operation, with one end aligned with the fixed guide rail 19 to form a continuous guide channel for the vehicle bridge to travel.

[0028] The axle has a frame structure, consisting of a long beam 11, short beams 5, a rear end plate 7, axles 12, and movable rollers 6. Two long beams 11 are parallel to each other, and multiple short beams 5 are fixedly connected between the two long beams 11, forming the main frame of the axle. The rear end plate 7 is fixed to one end of the long beam 11 to bear the thrust of the lifting drive device. The axles 12 pass through axle holes in the long beams 11, and movable rollers 6 are installed at both ends of the axles 12. The axle is placed on fixed guide rails 19 and movable guide rails 20 via the movable rollers 6, allowing it to travel back and forth along the guide rails.

[0029] The driving mechanism consists of a rack 18, a gear 17, a rocker arm 14, a bearing support 15, and a manual crank handle 13. The rack 18 is fixedly mounted on the side of the long beam 11 of the axle, and the length direction of the rack 18 is consistent with that of the long beam 11. The bearing support 15 is fixed on the moving frame 16, and the rocker arm 14 passes through the bearing support 15 and can rotate around its own axis. The gear 17 is fixed on the rocker arm 14 and meshes with the rack 18. The manual crank handle 13 is mounted on the exposed end of the rocker arm 14 for the operator to apply force to rotate.

[0030] The loading plate 4 is placed above the axle and is the component that directly carries the materials. The lifting transmission mechanism consists of multiple sets of inclined block support roller assemblies. Inclined blocks 1 are evenly fixed on both sides of the bottom of the loading plate 4, and support rollers 2 are installed on the outer side of the axle. The inclined blocks 1 and support rollers 2 are always in an overlapping state. The stop block 3 is fixed at the bottom of the loading plate 4, corresponding to the position of the support rollers 2, and is used to limit the extreme position of the support rollers 2.

[0031] The lifting drive device includes a top block 9, a lead screw 10, and a steel ball 8. The top block 9 is fixed to the end of the feeding plate 4 away from the sintering furnace, and a threaded hole is provided on the top block 9; the lead screw 10 is screwed into the threaded hole of the top block 9, and the steel ball 8 is wrapped around the end of the lead screw 10, and the steel ball 8 abuts against the rear end plate 7 of the axle to form a thrust transmission structure.

[0032] Operators neatly stack the powder compacts (green compacts) to be sintered on the feeding plate 4, ensuring that the material is not tilted or collided, and avoiding initial damage.

[0033] The mobile frame 16 is pushed to move the entire device to the feeding station of the sintering furnace. Then the mobile guide rail 20 is pushed onto the graphite furnace bed inside the furnace so that the mobile guide rail 20 is aligned with the fixed guide rail 19 on the mobile frame 16, forming a complete guide path through which the axle can pass.

[0034] The operator rotates the lead screw 10 clockwise, and the lead screw 10 applies a horizontal thrust to the loading plate 4 through the top block 9. Since the inclined block 1 at the bottom of the loading plate 4 overlaps with the support roller 2 on the outside of the axle, the loading plate 4 moves obliquely upward along the inclined surface of the inclined block 1 under the action of the horizontal thrust, thereby achieving vertical lifting. During this process, the direction of the force between the inclined block 1 and the support roller 2 is always perpendicular to the surface of the inclined block 1. As long as the horizontal thrust applied by the operator is constant, the vertical lifting thrust can remain constant, ensuring that the loading plate 4 rises smoothly until the bottom surface of the loading plate 4 is higher than the support plane inside the furnace.

[0035] The operator holds the hand crank 13 and turns it clockwise. The crank arm 14, supported by the bearing support 15, drives the gear 17 to rotate. Since the gear 17 meshes with the rack 18 on the axle beam 11, the rotation of the gear 17 is converted into the linear motion of the rack 18, which in turn drives the axle to travel along the fixed guide rail 19 and the moving guide rail 20 into the furnace. After the axle drives the feeding plate 4 and the material to the designated position in the furnace, the operator stops turning the hand crank 13.

[0036] The operator rotates the lead screw 10 counterclockwise, which pulls the top block 9. Under the combined action of its own weight and the pulling force of the lead screw 10, the feeding plate 4 moves diagonally downward along the inclined plane of the inclined block 1, achieving a vertical descent. When the bottom surface of the material contacts the supporting plane inside the furnace, the lead screw 10 is rotated slowly until the feeding plate 4 is completely separated from the material, to prevent the material from being pulled away when the axle retracts.

[0037] The operator turns the manual crank 13 counterclockwise, and the gear 17 rotates in the opposite direction, driving the axle to move out of the furnace along the guide rail through the rack 18 until the axle is completely back on the moving frame 16; then the screw 10 is turned counterclockwise to lower the feeding plate 4 to the lowest point. At this time, the stop block 3 contacts the support roller 2, restricting the position of the support roller 2 and preventing the inclined block 1 from disengaging from the support roller 2, thus completing one loading and unloading cycle.

[0038] The lifting transmission mechanism adopts the overlapping structure of inclined block 1 and support roller 2, combined with the lead screw 10 of the lifting drive device, which can ensure a constant vertical lifting thrust, effectively avoid the shaking or uneven force during the lifting of the feeding plate 4, greatly reduce the breakage rate of the green blank during the transfer process before sintering, and improve the qualification rate of sintered products.

[0039] The driving device uses the meshing transmission of gear 17 and rack 18, combined with the guiding effect of the guide rail, to accurately control the travel distance and position of the axle, ensuring that the material can be transported to the designated work position in the furnace, improving the accuracy of loading and unloading operations, and reducing sintering quality problems caused by material position deviation.

[0040] The moving guide rail 20 not only guides the axle but also prevents the axle and the material it carries from directly contacting the graphite furnace bed inside the furnace, thus preventing the graphite furnace bed from being damaged by heavy objects, extending the service life of the internal components of the furnace, and reducing equipment maintenance costs.

[0041] The stop block 3 can limit the extreme position of the support roller 2 when the feeding plate 4 descends to the lowest point, effectively preventing the inclined block 1 from disengaging from the support roller 2, ensuring the structural stability of the lifting transmission mechanism, avoiding device failure caused by component disengagement, and improving the reliability of equipment operation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A loading and unloading platform for a sintering furnace, comprising a mobile frame (16), a loading plate (4), an axle, a lifting transmission mechanism, a lifting drive device, a travel drive device, and a guide rail; the axle is mounted on the guide rail of the mobile frame (16), and the loading plate (4) is mounted on the axle; a lifting transmission mechanism and a lifting drive device are installed between the loading plate (4) and the axle, the lifting transmission mechanism is used to convert the relative motion between the loading plate (4) and the axle into the vertical lifting motion of the loading plate (4), and the lifting drive device is used to drive the loading plate (4) and the axle to generate relative motion; a travel drive device is installed between the axle and the mobile frame (16) for driving the axle to travel back and forth on the guide rail; the guide rail is used to provide guidance for the travel of the axle.

2. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The lifting transmission mechanism consists of multiple identical inclined block support wheel assemblies. Each inclined block support wheel assembly includes an inclined block (1) and a support roller (2). Several inclined blocks (1) are evenly installed on both sides of the bottom of the loading plate (4), and the corresponding support rollers (2) are evenly installed on the outside of the axle. The inclined blocks (1) and the support rollers (2) always maintain an overlapping state, and the direction of the force between the inclined blocks (1) and the support rollers (2) is always perpendicular to the surface of the inclined blocks (1).

3. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The axle is a frame structure, including two parallel long beams (11), which are fixedly connected by multiple short beams (5). The two long beams (11) are provided with end plates at both ends (the rear end plate of the axle is 7). Multiple shaft holes are evenly opened on each long beam (11), and wheel axles (12) are inserted into the shaft holes. Rolling bearings are assembled at both ends of the wheel axles (12) as moving rollers (6).

4. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The lifting drive device adopts a screw drive structure. The top block (9) is fixedly connected to the end of the feeding plate (4) away from the sintering furnace. The top block (9) has a threaded hole. The screw (10) is screwed into the threaded hole. The end of the screw (10) is wrapped with a freely rotating steel ball (8). The steel ball (8) abuts against the rear end plate (7) of the axle.

5. The loading and unloading platform for a sintering furnace according to claim 2, characterized in that, The inclined block (1) is fixed to the bottom of the loading plate (4) by a combination of threaded connection and pin connection. The support roller (2) is installed on the axle (12). The axle (12) is installed in the shaft hole of the axle. The centers of all support rollers (2) are kept on the same horizontal plane.

6. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The feeding plate (4) is equipped with a stop block (3). When the feeding plate (4) falls to the lowest point, the stop block (3) is used to limit the extreme position of the support roller (2) to prevent the inclined block (1) of the feeding plate (4) from disengaging from the support roller (2).

7. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The driving device is a gear and rack transmission structure, including a long rack (18), a gear (17), a rocker arm (14) and a manual crank handle (13); the long rack (18) is fixedly installed on the axle and parallel to the direction of the long beam (11); the gear (17) meshes with the long rack (18) and is fixedly installed on the rocker arm (14); the rocker arm (14) is rotatably supported by two bearing supports (15); the bearing supports (15) are fixed on the mobile frame (16); and the manual crank handle (13) is installed at the free end of the rocker arm (14).

8. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The guide rail includes a fixed guide rail (19) and a movable guide rail (20); the fixed guide rail (19) is fixedly installed on the movable frame (16) to support the axle on the movable frame (16); the movable guide rail (20) is made of cold-rolled strip steel and has a guide groove milled on it. During operation, the movable guide rail (20) can be pushed onto the graphite furnace bed in the furnace as a guide pad.

9. The loading and unloading platform for a sintering furnace according to claim 1, characterized in that, The length of the bearing platform is 2 to 10 meters. The core supporting component of the bearing platform is the loading plate (4). The bottom of the loading plate (4) is raised and lowered by the cooperation of the inclined block (1) and the support roller (2) of the axle.

10. The loading and unloading platform for a sintering furnace according to claim 8, characterized in that, The movable guide rail (20) is used to guide the axle into the furnace, while avoiding damage caused by the axle and the material it carries directly pressing against the graphite furnace bed. The movable guide rail (20) and the fixed guide rail (19) can cooperate to form a complete driving guide path for the axle.

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