A new stress concentration preventing support structure

Abstract

The utility model relates to a combustion equipment technical field, concretely is a novel stress concentration prevention support structure, and the support device support structure is by front end support device, middle part support device, tail support device and slide way device composition, the front end support device with inner tube and outer tube are all welded fixed connection, the middle part support device is by adjusting support and adjusting lock sleeve composition, one end of tail support device is welded fixed with outer tube, and tail support device is away from the end of outer tube and tightly presses inner tube and embeds into slide way device. The utility model can solve the problem of stress concentration: tail slide way device and tail support device cooperate and form the slidable support relation, allow the inner tube to move along the axis when the thermal expansion, effectively release the stress that the inner and outer tube produced because of the elongation difference, avoid the support structure fatigue open welding fracture.

Description

Technical Field

[0001] This utility model relates to the field of combustion equipment technology, specifically a novel support structure to prevent stress concentration. Background Technology

[0002] In existing double-pass rotary continuous carbonization furnace series equipment, the support structure of the inner and outer cylinders adopts front-end support, middle-end support, and tail-end support. Among them, the front-end support and tail-end support are fixed to the inner and outer cylinders by welding. At the same time, due to the small gap between the inner and outer cylinders, the middle support needs to be shortened due to assembly factors. This results in it not being able to fit closely with the outer cylinder at all times, and the inner cylinder cannot be effectively supported during operation, further increasing the stress on the front-end support and tail-end support.

[0003] The existing structure has significant defects: when the equipment is repeatedly turned on for heating and then turned off for cooling, the inner and outer cylinders will expand and elongate due to heat, and there is a difference in the length of the elongation between the two. The welded structure fixed at both ends cannot release the stress generated by this elongation difference, resulting in large stress on the front and rear supports. After long-term operation, this will cause fatigue weld breakage and fracture, which will lead to the main unit being unable to operate stably and requiring frequent shutdowns for maintenance, seriously affecting the stability and service life of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a novel support structure that prevents stress concentration, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel stress concentration-preventing support structure, the support structure comprising a front-end support device, a middle support device, a rear-end support device, and a sliding track device; The front end support device is welded and fixed to both the inner and outer cylinders. The middle support device consists of an adjusting rod and an adjusting lock sleeve. One end of the tail end support device is welded and fixed to the outer cylinder, and the end of the tail end support device away from the outer cylinder is pressed against the inner cylinder and embedded in the slide device.

[0006] Preferably, the central support device is provided with an adjusting rod, an adjusting sleeve, a nut, and an adjusting bolt. The adjusting sleeve and nut are welded and fixed to the inner cylinder, the adjusting rod is in tight contact with the outer cylinder, and the adjusting bolt passes through the nut and the inner cylinder.

[0007] Preferably, the front support device, the middle support device, and the tail support device are arranged sequentially along the inner and outer cylinder axes.

[0008] Preferably, the slide device is welded and fixed to the inner cylinder.

[0009] Preferably, the tail support device consists of an adjusting screw and an adjusting nut, and the tail support device is tightened against the inner cylinder by the adjusting nut to form a slidable support relationship. The adjusting screw is welded and fixed to the outer cylinder, and the adjusting nut is embedded in the slide rail device to form a slidable contact relationship.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model can solve the stress concentration problem: the tail slide device allows the inner cylinder to move along the axis when it is heated and expands, effectively releasing the stress caused by the difference in elongation between the inner and outer cylinders, and avoiding fatigue weld breakage of the support structure.

[0011] 2. This utility model can reduce reverse torque: the front support device restricts the rotation of the inner cylinder, and the movement of the tail slide device restricts the circumferential freedom of the inner cylinder, thus avoiding excessive reverse torque on the front support due to the excessive length of the inner cylinder.

[0012] 3. This utility model can enhance support stability: the central support device adjusts the support force on the inner cylinder by adjusting the bolts, preventing the middle of the inner cylinder from sagging, reducing the stress load on the supports at both ends, and ensuring that the inner cylinder is effectively supported throughout its entire length.

[0013] 4. This utility model can improve equipment performance: significantly reduce the frequency of downtime maintenance due to support structure failure, and improve the stability and continuous operation of the host machine. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the AA cross-section structure; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle BB; Figure 4 A schematic diagram showing the positional distribution of the support structure relative to the inner cylinder; Figure 5 This is a schematic diagram of the slide device and inner cylinder structure of this utility model.

[0015] In the diagram: 1. Front support device; 1-1. Locking screw; 1-2. Locking nut; 2. Middle support device; 2-1. Adjusting rod; 2-2. Adjusting sleeve; 3. Tail support device; 3-1. Adjusting screw; 3-2. Adjusting nut; 4. Nut; 5. Adjusting bolt; 6. Slide device; 7. Outer cylinder; 8. Inner cylinder. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 One embodiment provided by this utility model: A novel stress concentration-prevention support structure is disclosed, comprising a front support device 1, a middle support device 2, a rear support device 3, and a sliding track device 6, arranged sequentially along the inner and outer cylinder axes. The front support device 1 is welded and fixedly connected to both the inner cylinder 8 and the outer cylinder 7, which achieves rigid fixation of the front ends of the inner and outer cylinders, and at the same time restricts the tendency of the inner cylinder to rotate in the circumferential direction due to the force on the front end during operation. The central support device 2 consists of an adjusting rod 2-1 and an adjusting lock sleeve 2-2. The adjusting rod 2-1, adjusting lock sleeve 2-2, nut 4, and adjusting bolt 5 are welded and fixed to the inner cylinder 8. The adjusting rod 2-1 is in tight contact with the outer cylinder 7. The adjusting bolt 5 passes through the inner cylinder 8 and the nut 4. The supporting force of the central support device 2 on the inner cylinder 8 can be adjusted by adjusting the adjusting bolt 5. The adjusting lock sleeve 2-2 of this device is welded and fixed to the inner cylinder 8, and the adjusting rod 2-1 is in tight contact with the outer cylinder 7 to form a sliding support relationship, ensuring effective support for the inner cylinder 8. One end of the tail support device 3 is welded and fixed to the outer cylinder 7, and the end of the tail support device 3 away from the outer cylinder 7 is pressed against the inner cylinder 8 and embedded in the slide device 6. In addition, the tail support device 3 also restricts the circumferential rotation of the slide device 6 by locking the adjusting nut 3-2 and adjusting screw 3-1, thereby restricting the circumferential rotation of the inner cylinder 8 and ensuring that it plays a stable role during equipment operation.

[0018] Working principle: The front support device 1 is welded and fixed to the inner cylinder 8 by locking nut 1-2 and to the outer cylinder 7 by locking screw 1-1, ensuring the relative position of the front end is stable, restricting the circumferential rotation of the inner cylinder 8, and only following the rotation of the outer cylinder.

[0019] The adjusting bolt 5 of the middle support device 2 passes through the nut 4. Rotating the adjusting bolt 5 to tighten the adjusting rod 2-1 can change the extension length of the adjusting rod 2-1, thereby adjusting the supporting force of the middle support device 2 on the inner cylinder 8 and ensuring that the middle of the inner cylinder 8 does not sag.

[0020] The tail support device 3 is tightened against the inner cylinder 8 by adjusting the nut 3-2 and fixed to the outer cylinder 7 by adjusting the screw 3-1. The adjusting nut 3-2 is embedded in the slide device 6 to ensure the relative position of the tail end is stable and to restrict the circumferential rotation of the inner cylinder 8. When the inner cylinder 8 expands due to heat, it can move freely along the axial direction of the slide device 6 to release elongation stress and does not form a rigid constraint with the outer cylinder 7.

[0021] During equipment operation, when the inner and outer cylinders expand due to heat, the inner cylinder 8 forms a sliding support relationship through the tail slide device 6 and the tail support device 3, realizing axial movement. The middle support device 2 supports the inner cylinder 8 in real time, and the front support device 1 restricts circumferential rotation and axial rotation, jointly avoiding stress concentration and structural damage.

[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel support structure for preventing stress concentration, characterized in that: The support structure consists of a front support device (1), a middle support device (2), a rear support device (3), and a slide device (6); The front support device (1) is welded and fixedly connected to the inner cylinder (8) and the outer cylinder (7). The middle support device (2) is composed of an adjusting support rod (2-1) and an adjusting lock sleeve (2-2). One end of the tail support device (3) is welded and fixedly connected to the outer cylinder (7), and the end of the tail support device (3) away from the outer cylinder (7) is pressed against the inner cylinder (8) and embedded in the slide device (6).

2. The novel stress concentration-preventing support structure according to claim 1, characterized in that: The central support device (2) is provided with an adjusting support rod (2-1), an adjusting lock sleeve (2-2), a nut (4) and an adjusting bolt (5). The adjusting lock sleeve (2-2) and the nut (4) are welded and fixed to the inner cylinder (8). The adjusting support rod (2-1) is in close contact with the outer cylinder (7). The adjusting bolt (5) passes through the nut (4) and the inner cylinder (8).

3. The novel stress concentration-preventing support structure according to claim 2, characterized in that: The front support device (1), the middle support device (2) and the tail support device (3) are arranged sequentially along the inner and outer cylinder axes.

4. A novel stress-concentration-resistant support structure according to claim 3, characterized in that: The slide device (6) is welded and fixed to the inner cylinder (8).

5. A novel stress-concentration-resistant support structure according to claim 2, characterized in that: The tail support device (3) consists of an adjusting screw (3-1) and an adjusting nut (3-2). The tail support device (3) is pressed against the inner cylinder (8) by the adjusting nut (3-2) to form a sliding support relationship. The adjusting screw (3-1) is welded and fixed to the outer cylinder (7). The adjusting nut (3-2) is embedded in the slide device (6) to form a sliding contact relationship.

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