Opening and closing mechanism for large-diameter vacuum furnace cover

Abstract

The utility model relates to the technical field of vacuum furnaces, in particular to an opening and closing mechanism for a large-diameter vacuum furnace cover, which comprises a rotating arm and an arc-shaped track, the arc-shaped track is fixedly arranged beside a vacuum furnace body, and one end of the rotating arm is hinged on the vacuum furnace body. The other end of the rotating arm can be arranged on the arc-shaped track in a manner of walking along the arc-shaped track, and a liftable furnace cover matched with the vacuum furnace body is mounted on the rotating arm. According to the opening and closing mechanism for the furnace cover of the large-diameter vacuum furnace, through the matched design of the rotating arm and the arc-shaped track, the two sides of the furnace cover are stressed in the opening and closing process, and the problem that a force arm is distorted and deformed due to a traditional single-side shaft jacking mode is effectively solved; not only is the stability of the structure enhanced, but also the service life of the mechanism is prolonged, and the overall reliability of the vacuum furnace is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vacuum furnace technical field, concretely relates to a kind of opening and closing mechanism for large-diameter vacuum furnace furnace cover. BACKGROUND

[0002] With the wide application of vacuum furnace in multiple fields, its performance optimization has become the focus of the industry. In particular, for the processing technology needs of different products, many large-diameter vertical up-opening cover vacuum furnaces have emerged in the market. The furnace cover of this type of vacuum furnace is large in diameter and needs to be lifted and rotated before loading operation. The traditional single-sided shaft lifting method by hydraulic or electric lifting has significant limitations when applied to large-diameter furnace cover opening mechanisms. Because single-sided shaft lifting causes significant torsional deformation of the force arm, in order to maintain the stability of the structure, the strength of the force arm must be increased. However, this approach results in a significant increase in the overall structure weight, not only increasing the load bearing burden of the furnace body, but also causing unnecessary cost waste.

[0003] In view of the above problems, the industry urgently needs a new opening and closing mechanism to solve the mechanical performance problems of large-diameter vacuum furnace covers during opening and closing. This mechanism needs to be able to reduce the overall weight and cost while ensuring structural stability, thereby prolonging the service life and improving the economic efficiency of the vacuum furnace. Against this background, an opening and closing mechanism for large-diameter vacuum furnace covers is proposed. SUMMARY

[0004] To solve the above problems, the utility model provides an opening and closing mechanism for large-diameter vacuum furnace covers, which realizes two-sided stress of the furnace cover during opening and closing through the cooperative design of the rotating arm and the arc-shaped track, effectively avoiding the torsional deformation problem of the force arm caused by the traditional single-sided shaft lifting method. Not only does it enhance the stability of the structure, but also prolongs the service life of the mechanism and improves the overall reliability of the vacuum furnace.

[0005] The technical solution of the utility model is as follows:

[0006] An opening and closing mechanism for large-diameter vacuum furnace covers, comprising a rotating arm and an arc-shaped track, the arc-shaped track is fixedly arranged beside the vacuum furnace body, one end of the rotating arm is hingedly connected to the vacuum furnace body, the other end of the rotating arm is arranged on the arc-shaped track and can walk along the arc-shaped track, a liftable furnace cover cooperating with the vacuum furnace body is installed on the rotating arm. During the opening and closing of the furnace cover, it is always two-sided stressed, which optimizes the overall mechanical performance of the furnace cover, especially the large-diameter vacuum furnace cover, during opening and closing, prolongs its service life, and reduces the cost of the vacuum furnace.

[0007] Specifically, in order to make the rotating arm walk along the arc-shaped track better, a rotating wheel set matched with the arc-shaped track is installed at the other end of the rotating arm, so that the rotating arm can walk along the arc-shaped track more smoothly and smoothly; the operation efficiency of the mechanism is improved, the friction and wear are reduced, and the service life of the mechanism is prolonged.

[0008] Further, a rotating driving device for driving the rotating wheel set to rotate is arranged on the rotating arm; the mechanical automatic rotation function of the rotating arm is realized; not only the working efficiency is improved, but also the difficulty and risk of manual operation are reduced, and the safety of operation is enhanced.

[0009] The rotating driving device is a driving reduction motor fixedly arranged on the rotating arm; the output shaft of the driving reduction motor is fixedly connected with the center of the rotating wheel set, a stable and reliable driving force is provided, and it is ensured that the rotating arm can rotate along the arc-shaped track stably and accurately; at the same time, the driving reduction motor also has the advantages of simple structure, convenient maintenance, etc.

[0010] A hinge seat is fixedly arranged on the vacuum furnace body, a rotating shaft is fixedly connected at one end of the rotating arm, and the rotating shaft is hinged to the hinge seat; through the cooperation of the hinge seat and the rotating shaft, the rotating arm is hinged to the vacuum furnace body, and flexible rotation of the rotating arm is realized; not only the stability of the mechanism is improved, but also necessary support for lifting and rotating of the furnace cover is provided.

[0011] A rotating limit switch for detecting whether the rotating arm rotates to the position is fixedly arranged on the hinge seat; the rotating angle of the rotating arm can be accurately detected, and it is ensured that the furnace cover can be accurately positioned during opening and closing; not only the accuracy of operation is improved, but also damage to equipment or safety accidents caused by misoperation is avoided.

[0012] A plurality of track support columns are arranged between the arc-shaped track and the ground; stable support is provided for the arc-shaped track; not only the stability of the mechanism is enhanced, but also it is ensured that the rotating arm can walk along the arc-shaped track stably and safely.

[0013] A furnace cover lifting driving device is arranged on the rotating arm; automatic lifting function of the furnace cover is realized, working efficiency is improved, difficulty and risk of manual operation are reduced, and safety of operation is enhanced.

[0014] The furnace cover lifting driving device comprises an electric hoist fixedly arranged on the rotating arm, and the furnace cover is fixed at the end of the telescopic end of the electric hoist; stable and reliable lifting force is provided, and it is ensured that the furnace cover can be lifted stably and accurately; at the same time, the electric hoist also has the advantages of simple structure, convenient operation, easy maintenance, etc.

[0015] The top of the furnace cover is fixedly provided with a plurality of guide rods, and guide holes matched with the guide rods are arranged on the rotating arm; accurate positioning and stable support of the furnace cover in the lifting process are realized; not only the accuracy of the furnace cover lifting is improved, but also equipment damage or safety accidents caused by shaking are avoided; meanwhile, the design of the guide rods and the guide holes also enhances the connection strength between the furnace cover and the rotating arm, and improves the overall stability of the mechanism.

[0016] The utility model discloses the beneficial effect lies in:

[0017] 1, the utility model discloses a kind of opening and closing mechanism for large-caliber vacuum furnace furnace cover, and the opening and closing mechanism for large-caliber vacuum furnace furnace cover is realized two sides stress in the process of opening and closing of furnace cover by the cooperation design of rotating arm and arc track, effectively avoid the problem of force arm torsional deformation caused by traditional unilateral shaft jacking mode;Not only the stability of structure is strengthened, but also the service life of mechanism is prolonged, and the overall reliability of vacuum furnace is improved.

[0018] 2, the utility model discloses a kind of opening and closing mechanism for large-caliber vacuum furnace furnace cover, and the opening and closing mechanism for large-caliber vacuum furnace furnace cover is not required to excessively increase force arm strength to keep structure stable due to the design of two sides stress, so the weight of overall structure can be significantly reduced;Not only the load bearing burden of furnace body is reduced, but also material cost and manufacturing cost are reduced, and the economic benefit of vacuum furnace is improved.

[0019] 3, the utility model discloses a kind of opening and closing mechanism for large-caliber vacuum furnace furnace cover, and the opening and closing mechanism for large-caliber vacuum furnace furnace cover is realized automatic lifting, rotation and closing operation of furnace cover by the cooperation of rotating arm and furnace cover lifting drive arrangement;This automatic operation not only improves work efficiency, but also reduces the risk of manual operation, and enhances the security of operation.

[0020] 4, the utility model discloses a kind of opening and closing mechanism for large-caliber vacuum furnace furnace cover, and the opening and closing mechanism for large-caliber vacuum furnace furnace cover is realized accurate control of furnace cover opening and closing process by being equipped with intelligent control element such as rotation limit switch, lifting limit switch;Not only the accuracy of operation is improved, but also user experience is improved, so that the operation of vacuum furnace is more convenient and efficient. DRAWINGS

[0021] The scheme and advantages of the present application will become clear to those skilled in the art from the following detailed description of the preferred embodiments. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be limiting on the present utility model.

[0022] In the drawings:

[0023] Figure 1A front view of the opening and closing mechanism for the large-diameter vacuum furnace cover of the utility model embodiment;

[0024] Figure 2 A top view of the opening and closing mechanism for the large-diameter vacuum furnace cover of the utility model embodiment;

[0025] The components represented by the reference numerals in the drawings are:

[0026] The utility model discloses: 1, hinge seat, 2, rotation limit switch, 3, rotation axis, 4, rotation arm, 5, guide rod, 6, electric lift, 7, rotation wheel group, 8, drive reduction motor, 9, vacuum furnace body, 10, arc track, 11, furnace cover, 12, lifting limit switch, 13, track support column. Specific implementation

[0027] As Figure 1 And Figure 2 The left side of the main part rotation arm 4 of the opening and closing mechanism for the large-diameter vacuum furnace cover is connected with the vacuum furnace body 9 by hinge seat 1 through rotation axis 3, the right side of rotation arm 4 is connected with rotation wheel group 7, rotation wheel group 7 is placed on arc track 10, arc track 10 is arranged in 125 degrees rotation angle along the opening direction of furnace cover 11, arc track 10 is fixed at one end on vacuum furnace body 9, and the other positions are fixed by track support column 13 vertically placed on the ground, so that arc track 10 is stably placed on the arc plane of furnace cover 11 rotation.

[0028] Rotation driving device for driving rotation wheel group 7 to rotate is arranged on rotation arm 4, and the rotation driving device is drive reduction motor 8 fixedly arranged on rotation arm 4.

[0029] Hinge seat 1 is fixedly arranged on vacuum furnace body 9, rotation axis 3 is fixedly connected at one end of rotation arm 4, and rotation axis 3 is hinged on hinge seat 1, and rotation limit switch 2 for detecting whether rotation arm 4 rotates to position is fixedly arranged on hinge seat 1.

[0030] Furnace cover lifting driving device is arranged on rotation arm 4, and the furnace cover lifting driving device includes electric lift 6 fixedly arranged on rotation arm 4, and furnace cover 11 is fixed at the telescopic end of electric lift 6, a plurality of guide rods 5 are fixedly arranged on the top of furnace cover 11, guide holes matched with guide rods 5 are arranged on rotation arm 4, and lifting limit switch 12 for detecting whether furnace cover 11 lifts to position is installed on rotation arm 4.

[0031] When the furnace cover 11 needs to be opened, because there are other heat preservation screens inside the furnace cover 11 for heat preservation of the vacuum furnace, and the heat preservation screens are protruding from the flange of the furnace cover 11 inside the vacuum furnace body 9, in order to realize the opening and rotation of the furnace cover 11, the furnace cover 11 needs to be lifted to a certain height by the electric elevator 6 installed on the selection arm 4, so that the heat preservation screen fixed on the furnace cover 11 is lifted to be higher than the top flange surface of the vacuum furnace body 9. The lifting height of the furnace cover 11 by the electric elevator 6 is controlled by the lifting limit switch 12. In order to prevent the furnace cover 11 from rotating during lifting, two guide rods 5 are specially added to limit the possible rotation of the furnace cover 11 during lifting. When the required lifting height is reached, the lifting limit switch 12 sends a signal to the control system, the control system immediately stops the work of the electric elevator 6, and automatically locks, so that the furnace cover 11 is in a suspended state. Next, the driving reduction motor 8 on the right side of the rotating arm 4 drives the rotating wheel set 7 to rotate around the rotating shaft 3 on the left side of the rotating arm 4. The driving reduction motor 8 is provided with a frequency converter, and the rotation speed can be adjusted by adjusting the speed. When the rotation angle reaches 125 degrees, that is, the furnace cover 11 is completely rotated in place, the sensing device on the rotation limit switch 2 is sensed, and the signal is transmitted to the control system, so that the driving reduction motor 8 stops working, and the furnace cover 11 is rotated in place. The opening stage of the whole furnace cover 11 is completed.

[0032] When the furnace cover 11 needs to be closed, the driving reduction motor 8 on the right side of the rotating arm 4 drives the rotating wheel set 7 to rotate in the opposite direction of the opening direction, so as to rotate around the rotating shaft 3 on the left side of the rotating arm 4. When the rotating arm 4 reversely rotates the furnace cover 11 by an angle of-125 degrees, that is, the furnace cover 11 is completely rotated in place, the sensing device on the rotation limit switch 2 is sensed, and the signal is transmitted to the control system, so that the driving reduction motor 8 stops working, and the furnace cover 11 is rotated in place. At this time, the electric elevator 6 is opened to lower the furnace cover 11 to a fixed height. When the furnace cover 11 contacts the top flange surface of the vacuum furnace body 9, the lifting limit switch 12 senses that the furnace cover 11 is lowered in place. At this time, the lifting limit switch 12 sends a signal to the control system, the control system immediately stops the work of the electric elevator 6, and automatically locks, so that the furnace cover 11 is in contact with the top flange of the vacuum furnace body 9. Thus, the closing stage of the whole furnace cover 11 is completed.

[0033] Because the weight of the furnace cover 11 is borne by the rotating shafts 3 and the rotating wheel sets 7 on both sides of the rotating arm 4, and the stress on both sides is uniform, the problem of inconvenient opening and closing of the large-diameter vacuum furnace cover due to its large diameter and heavy weight is solved.

Claims

1. An opening and closing mechanism for the furnace lid of a large-diameter vacuum furnace, characterized in that, It includes a rotating arm (4) and an arc track (10). The arc track (10) is fixedly installed next to the vacuum furnace body (9). One end of the rotating arm (4) is hinged to the vacuum furnace body (9), and the other end of the rotating arm (4) is mounted on the arc track (10) so that it can travel along the arc track (10). A liftable furnace cover (11) that cooperates with the vacuum furnace body (9) is installed on the rotating arm (4).

2. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 1, characterized in that, A set of rotating wheels (7) that cooperates with the arc track (10) is installed at the other end of the rotating arm (4).

3. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 2, characterized in that, A rotary drive device is provided on the rotary arm (4) to drive the rotary wheel assembly (7) to rotate.

4. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 3, characterized in that, The rotary drive device is a drive reduction motor (8) fixedly mounted on the rotary arm (4).

5. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 1, characterized in that, A hinge seat (1) is fixedly installed on the vacuum furnace body (9), and a rotating shaft (3) is fixedly connected to one end of the rotating arm (4). The rotating shaft (3) is hinged to the hinge seat (1).

6. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 5, characterized in that, A rotation limit switch (2) for detecting whether the rotating arm (4) has rotated to the correct position is fixedly installed on the hinge seat (1).

7. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 1, characterized in that, Several track support columns (13) are set between the arc-shaped track (10) and the ground.

8. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 1, characterized in that, The rotating arm (4) is equipped with a furnace cover lifting drive device.

9. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 8, characterized in that, The furnace cover lifting drive device includes an electric lift (6) fixedly mounted on a rotating arm (4), and the furnace cover (11) is fixed to the telescopic end of the electric lift (6).

10. The opening and closing mechanism for a large-diameter vacuum furnace lid according to claim 9, characterized in that, The top of the furnace cover (11) is fixedly provided with several guide rods (5), and the rotating arm (4) is provided with guide holes that cooperate with the guide rods (5).

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