Lifting device of metallurgical valve

Abstract

The utility model provides a lifting device of a metallurgical valve. The lifting device comprises a supporting component, a winding drum and an outer gear. The supporting component comprises a front supporting seat and a rear supporting seat. An input shaft is rotationally connected to the front supporting seat, a supporting shaft is rotationally connected to the rear supporting seat, and the rotating axis of the input shaft coincides with the rotating axis of the supporting shaft. One end of the reel is fixedly connected with the supporting shaft, and the other end is rotatably connected with the input shaft. An inner gear is arranged at the end, close to the front supporting base, of the winding drum, and the inner gear and the rotation center of the input shaft are coaxially arranged. The outer gear is eccentrically arranged on the input shaft, and the outer gear is partially meshed with the inner gear. Wherein the inner gear is more than the outer gear by one gear tooth, and when the outer gear completes one tooth swinging period, the inner gear rotates by the distance of one gear tooth. According to the utility model, the technical problems that the friction force of the transmission mode adopted in the actual use process of the existing metallurgical valve is larger and the integral manufacturing process is more complicated can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting, in particular to a lifting device for a metallurgical valve. Background Art

[0002] Metallurgical valves are mainly used to control the flow of media in pipelines and are widely used in the fields of petroleum, chemical industry, metallurgy, and electric power. In metallurgical plants, metallurgical valves can be used to control media in processes such as iron ore smelting and steel manufacturing. Their function is to ensure that the flow of media in the process is stable and safe and meets specific process requirements. In actual use, metallurgical valves are usually lifted by hoists.

[0003] At present, the existing metallurgical valve lifting machines mostly use worm gear transmission, which has the defects of large friction, short service life and complex overall manufacturing process. Utility Model Content

[0004] The utility model provides a lifting device for a metallurgical valve, so as to solve the technical problems that the friction force of the transmission method adopted by the existing metallurgical valves in actual use is relatively large and the overall manufacturing process is relatively complicated.

[0005] The utility model provides a lifting device for a metallurgical valve, which comprises:

[0006] A supporting component, comprising a front supporting seat and a rear supporting seat;

[0007] An input shaft is rotatably connected to the front support seat, and a support shaft is rotatably connected to the rear support seat, and the rotation axis of the input shaft coincides with the rotation axis of the support shaft;

[0008] A reel is located between the front support seat and the rear support seat, one end of the reel is fixedly connected to the support shaft, and the other end is rotatably connected to the input shaft, and an internal gear is provided at one end of the reel close to the front support seat, and the internal gear is coaxially arranged with the rotation center of the input shaft; and

[0009] an external gear eccentrically disposed on the input shaft and partially meshing with the internal gear;

[0010] The inner gear has one more tooth than the outer gear, and when the outer gear completes one swing cycle, the inner gear rotates a distance of one tooth.

[0011] In one embodiment of the present invention, a rotating component is further included, which is located at the connection between the input shaft and the front support seat, and at the connection between the support shaft and the rear support seat.

[0012] In one embodiment of the present invention, the rotating component is a rotating bearing, and the outer ring of the rotating bearing is fixedly connected to the front support seat or the rear support seat; and

[0013] The inner ring of the rotary bearing is fixedly connected to the input shaft or the support shaft.

[0014] In one embodiment of the present invention, a connecting key is further included, which is clamped between the supporting shaft and the reel.

[0015] In one embodiment of the present invention, a hand wheel is further included, and the hand wheel is fixedly connected to one end of the input shaft.

[0016] In an embodiment of the present invention, the input shaft is provided with an eccentric portion, and the external gear is fixedly connected to the eccentric portion.

[0017] In an embodiment of the present invention, an eccentric bearing is fixedly connected to the input shaft, and the external gear is fixedly connected to the outer diameter of the eccentric bearing.

[0018] In one embodiment of the present invention, a bearing cover is provided at the connection between the rotating bearing and the front support seat or the rear support seat.

[0019] In summary, the utility model discloses a lifting device for metallurgical valves, which abandons the traditional speed reduction gear meshing transmission mode through the eccentric meshing transmission between the internal gear and the external gear, and drives the internal gear reel to rotate through the eccentric swing of the external gear. This makes the device have a large speed ratio, small friction, large output torque, and realizes a self-locking function through the eccentricity of the eccentric shaft. It can effectively improve the technical problems of the large friction and complex overall manufacturing process of the transmission method used in the actual use of existing metallurgical valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A structural schematic diagram of a lifting device for a metallurgical valve provided in one embodiment of the utility model;

[0022] Figure 2 for Figure 1 The schematic diagram of the structure is a cross-section at AA in the middle;

[0023] Figure 3 A schematic structural diagram of another metallurgical valve lifting device provided in one embodiment of the utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the structure cut away at BB in the middle.

[0025] Description of Figure Numbers

[0026] 10. Support component; 101. Front support seat; 1011. Input shaft; 10111. Eccentric part; 10112. Eccentric bearing; 102. Rear support seat; 1021. Support shaft; 1022. Connecting key;

[0027] 20. reel; 201. internal gear;

[0028] 30. External gear;

[0029] 40. Rotating parts; 401. Bearing gland;

[0030] 50. Handwheel. DETAILED DESCRIPTION

[0031] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] See also Figure 1 and Figure 3 The utility model provides a lifting device for a metallurgical valve, which can be used to solve the technical problems that the friction of the transmission method adopted by the existing metallurgical valves in actual use is large and the overall manufacturing process is relatively complicated. Among them, the lifting device for the metallurgical valve may include a supporting component 10, a reel 20 and a driving component. The reel 20 is connected to the supporting component 10, and a cable for lifting the metallurgical valve is wound on the reel 20. Therefore, the rotation of the reel 20 can be allowed to reel in or release the cable, thereby realizing the lifting or lowering of the metallurgical valve. At the same time, the driving component is connected to the reel 20 to realize the rotation of the reel 20 through the driving component.

[0033] See also Figure 1 and Figure 3In one embodiment, the support member 10 includes a front support seat 101 and a rear support seat 102, and the reel 20 is located between the front support seat 101 and the rear support seat 102. The front support seat 101 and the rear support seat 102 are arranged opposite to each other, and an input shaft 1011 is rotatably connected to the front support seat 101, and a support shaft 1021 is rotatably connected to the rear support seat 102. The front support seat 101 and the input shaft 1011, and the rear support seat 102 and the support shaft 1021 are connected respectively through a rotating member 40. Through the rotating member 40, the rotation effect of the input shaft 1011 and the support shaft 1021 can be effectively improved.

[0034] Specifically, the rotating component 40 may be allowed to use a rotating bearing. The specific model of the rotating bearing may be determined according to actual needs. For example, the rotating bearing may be allowed to use a deep groove ball bearing. The outer ring of the rotating bearing is fixedly connected to the front support seat 101 or the rear support seat 102, and the inner ring of the rotating bearing is fixedly connected to the input shaft 1011 or the support shaft 1021. By rotating the bearing, the stability of the input shaft 1011 and the support shaft 1021 during the rotation process can be effectively improved.

[0035] See also Figure 1 and Figure 3 In one embodiment, the front support seat 101 and the rear support seat 102 are respectively detachably connected with a bearing cover 401 by bolts. The bearing cover 401 is located on the outside of the bearing, and a protrusion is provided in the bearing cover 401, and the protrusion is connected to the outer ring of the rotating bearing. The radial support of the rotating bearing can be achieved by the bearing cover 401. At the same time, for the bearing cover 401 on the front support seat 101, a through hole is provided, and the diameter of the through hole is slightly larger than the diameter of the input shaft 1011. Therefore, the input shaft 1011 can pass through the through hole to be connected to the front support seat 101, and the rotating bearing located on the front support seat 101 is radially supported by the bearing cover 401.

[0036] See also Figure 1 and Figure 3 In one embodiment, the driving component may include a hand wheel 50 and an external gear 30. The hand wheel 50 is fixedly connected to the input shaft 1011 to drive the input shaft 1011 to rotate through the hand wheel 50. The external gear 30 is arranged at the other end of the input shaft 1011, and the external gear 30 is eccentrically arranged with the input shaft 1011. Therefore, when the hand wheel 50 drives the input shaft 1011 to rotate, the external gear 30 can be driven to rotate along the rotation center of the input shaft 1011.

[0037] It should be noted that one end of the reel 20 is fixedly connected to the support shaft 1021, and the other end is rotatably connected to the input shaft 1011. The reel 20 and the support shaft 1021 can be connected by a connecting key 1022. At the same time, an internal gear 201 is provided at one end of the reel 20 close to the front support seat 101, and the rotation center of the internal gear 201 coincides with that of the input shaft 1011. The external gear 30 is eccentrically arranged with the input shaft 1011, and the external gear 30 and the internal gear 201 are partially meshed.

[0038] Specifically, the inner gear 201 has one more tooth than the outer gear 30. Therefore, when the outer gear 30 completes a swing tooth cycle, the inner gear 201 rotates just one tooth distance. Furthermore, the inner gear 201 and the reel 20 can be an integral structure, for example, it can be allowed to be directly processed and formed on the reel 20. Through the eccentric meshing transmission between the inner gear 201 and the outer gear 30, the traditional speed reduction gear meshing transmission speed change method is abandoned, and the inner gear 201 reel 20 is driven to rotate by the eccentric swing of the outer gear 30. It has a large speed ratio, low friction, large output torque, and a self-locking function is achieved through the eccentricity of the eccentric shaft.

[0039] See also Figure 1 and Figure 2 In one embodiment, an eccentric portion 10111 may be provided on the input shaft 1011, and the external gear 30 is fixedly connected to the eccentric portion 10111. The eccentric portion 10111 is eccentrically arranged with respect to the rotation center of the input shaft 1011, and the external gear 30 is fixedly connected to the eccentric portion 10111. Therefore, by providing an eccentric portion 10111 on the input shaft 1011, an eccentric arrangement between the external gear 30 and the input shaft 1011 can be achieved.

[0040] See also Figure 3 and Figure 4 In one embodiment, an eccentric bearing 10112 may be provided on the input shaft 1011. The inner diameter of the eccentric bearing 10112 is fixedly connected to the input shaft 1011, and the outer gear 30 is fixedly connected to the outer diameter of the eccentric bearing 10112. Therefore, by providing an eccentric bearing 10112 between the outer gear 30 and the input shaft 1011, an eccentric setting between the outer gear 30 and the input shaft 1011 can be achieved.

[0041] Furthermore, in order to improve the actual use effect of the device, the eccentric swing of the outer gear 30 drives the inner gear 201 to rotate, and the inner gear 201 drives the drum 20 to rotate to achieve a deceleration effect. At the same time, a steel wire rope is provided on the drum 20 to pull the metallurgical valve to open or close, thereby achieving the purpose of opening and closing the metallurgical valve.

[0042] It should be noted that, in some embodiments, the deceleration can also be made into a double-stage deceleration or a multi-stage deceleration, so that the output torque of the input shaft 1011 is increased by dozens or hundreds of times, so as to improve the actual use effect of the device.

[0043] In summary, the utility model discloses a lifting device for metallurgical valves, which abandons the traditional speed reduction gear meshing transmission mode through the eccentric meshing transmission between the internal gear 201 and the external gear 30, and drives the internal gear 201 reel 20 to rotate through the eccentric swing of the external gear 30. This makes the device have a large speed ratio, small friction, large output torque, and realizes a self-locking function through the eccentricity of the eccentric shaft.

[0044] Therefore, the technical problems of large friction and relatively complex overall manufacturing process in the transmission method adopted by existing metallurgical valves during actual use can be effectively improved.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention. As used in the description herein and in the entire claims below, unless otherwise specified, "one", and "the" include plural references. Similarly, as used in the description herein and in the entire claims below, unless otherwise specified, the meaning of "in..." includes "in..." and "on...".

[0046] The above description of the illustrated embodiments of the present invention (including that described in the Abstract of the Specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

Claims

1. A lifting device for a metallurgical valve, characterized in that: include: A supporting component (10), comprising a front supporting seat (101) and a rear supporting seat (102); An input shaft (1011) is rotatably connected to the front support seat (101), and a support shaft (1021) is rotatably connected to the rear support seat (102), and the rotation axes of the input shaft (1011) and the support shaft (1021) coincide with each other; A reel (20) is located between the front support seat (101) and the rear support seat (102), one end of the reel (20) is fixedly connected to the support shaft (1021), and the other end is rotatably connected to the input shaft (1011), and an internal gear (201) is provided at one end of the reel (20) close to the front support seat (101), and the internal gear (201) is coaxially arranged with the rotation center of the input shaft (1011); and an external gear (30) eccentrically disposed on the input shaft (1011), and the external gear (30) is partially meshed with the internal gear (201); The internal gear (201) has one more gear tooth than the external gear (30), and when the external gear (30) completes one gear swing cycle, the internal gear (201) rotates a distance of one gear tooth.

2. The lifting device for metallurgical valves according to claim 1, characterized in that: It also includes a rotating component (40), which is located at the connection between the input shaft (1011) and the front support seat (101), and at the connection between the support shaft (1021) and the rear support seat (102).

3. The lifting device for metallurgical valves according to claim 2, characterized in that: The rotating component (40) is a rotating bearing, and the outer ring of the rotating bearing is fixedly connected to the front support seat (101) or the rear support seat (102); and The inner ring of the rotary bearing is fixedly connected to the input shaft (1011) or the support shaft (1021).

4. The lifting device for metallurgical valves according to claim 3, characterized in that: A bearing pressure cover (401) is respectively provided at the connection between the rotating bearing and the front support seat (101) or the rear support seat (102).

5. The lifting device for metallurgical valves according to claim 1, characterized in that: It also includes a connecting key (1022) which is clamped between the supporting shaft (1021) and the reel (20).

6. The lifting device for metallurgical valves according to claim 1, characterized in that: It also includes a hand wheel (50), wherein the hand wheel (50) is fixedly connected to one end of the input shaft (1011).

7. The lifting device for metallurgical valves according to claim 1, characterized in that: The input shaft (1011) is provided with an eccentric portion (10111), and the external gear (30) is fixedly connected to the eccentric portion (10111).

8. The lifting device for metallurgical valves according to claim 1, characterized in that: An eccentric bearing (10112) is fixedly connected to the input shaft (1011), and the external gear (30) is fixedly connected to the outer diameter of the eccentric bearing (10112).

Images