WO2022001099A1

WO2022001099A1 - Intelligent monitoring type double-sealing structure for decelerator

Info

Publication number: WO2022001099A1
Application number: PCT/CN2021/074113
Authority: WO
Inventors: 唐志生; 金新华; 周旭; 莫海斌
Original assignee: 江苏国茂减速机股份有限公司
Priority date: 2020-06-29
Filing date: 2021-01-28
Publication date: 2022-01-06
Also published as: CN111503249B; CN111503249A

Abstract

An intelligent monitoring type double-sealing structure for a decelerator, comprising a stationary ring (3) attached to the inner wall of a housing (1) and a moving ring (4) attached to the outer wall of a shaft body (2). The inner wall of one end of the stationary ring (3) and the outer wall of the moving ring (4) are two parallel tapered surfaces, a first-stage sealing structure (5) is formed between the two tapered surfaces, and the inner wall of the other end of the stationary ring (3) is formed into a cylindrical cavity (31) connected to the tapered surface on the stationary ring (3); the double-sealing structure also comprises a seat structure (6) sealingly fitted to the cylindrical cavity (31), a press plate (7), and a spring (8) provided between the seat structure (6) and the press plate (7); the seat structure (6) is attached to the moving ring (4) by means of a magnetic structure, one side of the first-stage sealing structure (5) is blocked to form a second-stage sealing structure, and the stationary ring (3) is tightly pressed by means of a cover body (9); the double-sealing structure also comprises at least one pressing rod (10) penetrating through the cover body (9), the pressing rod (10) is used for adjusting the initial position of the press plate (7), a pressure sensing sheet (11) is provided between the pressing rod (10) and the press plate (7), and the pressure sensing sheet (11) is connected to a monitoring system. The effective sealing of a decelerator can be achieved, and the sealing effect can be intelligently monitored in real time.

Description

An intelligent monitoring type reducer with double seal structure

technical field

The invention relates to the technical field of reducers, in particular to a double-sealing structure of an intelligent monitoring type reducer.

Background technique

At present, most of the sealing structures for the reducer adopt a single contact form, so the requirements for processing and assembly are relatively high, and wear is prone to occur during use, frequent replenishment of oil due to leakage, and maintenance and replacement of sealing structures, etc. It seriously affects the production efficiency of customers, and the above process requires frequent monitoring and timely and effective control by personnel, which brings serious inconvenience to the work.

In view of the above-mentioned existing defects, the inventor of the present invention actively conducts research and innovation based on years of rich practical experience and professional knowledge engaged in the design and manufacture of such products, and cooperates with the application of theory, in order to create an intelligent monitoring type reducer double-sealing structure, which makes It is more practical.

SUMMARY OF THE INVENTION

The present invention provides a double-sealing structure of an intelligent monitoring type reducer, thereby effectively solving the problems in the background art.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An intelligent monitoring type reducer double-sealing structure, which is arranged between the inner side of the reducer's casing and the outer side of the shaft body, comprising: a static ring fitted with the inner wall of the casing, and a moving ring fitted with the outer wall of the shaft. The inner wall of one end of the ring and the outer wall of the moving ring are two parallel conical surfaces, and a first-stage sealing structure is formed between the two conical surfaces;

The inner wall of the other end of the static ring forms a cylindrical cavity connected with the conical surface, and the double-sealing structure further includes a seat structure, a pressure plate, and a pressure plate arranged between the two sealing and fitting with the cylindrical cavity. The spring, the seat body structure and the moving ring are attached by a magnetic structure, and the second-level sealing structure is formed by blocking one side of the first-level sealing structure, and the static ring is pressed by the cover body. ;

It also includes at least one pressing rod penetrating through the cover body, the pressing rod is used to adjust the initial position of the pressing plate, and a pressure sensing sheet is arranged between the pressing rod and the pressing plate, and the pressure sensing sheet is connected with the monitoring system connection.

Further, the magnetic structure is a magnetic layer disposed between the base structure and the moving coil and fixedly connected to the base structure.

Further, the edge of the seat structure on one side of the first-stage sealing structure is a chamfered structure, and the magnetic layer is indented inward relative to the inner wall of the cylindrical cavity, so that in the first-stage sealing structure, the magnetic layer is indented inward. The blocking side of the primary sealing structure forms a buffer cavity.

Further, a sealing groove is provided on the periphery of the seat structure, and a sealing ring is embedded in the sealing groove.

Further, a guide rod is arranged between the seat body structure and the pressing plate for guiding them along the axial direction of the shaft body.

Further, a guide structure is provided between the cylindrical cavity and the pressing plate.

Further, the guide structure includes a guide belt located on the edge of the pressing plate, and a guide groove provided on the inner wall of the static ring and adapted to the guide belt.

Further, the extrusion rod is threadedly connected with a threaded hole located on the cover body.

Further, the base structure is provided with a groove body for accommodating the end of the spring, and the inner wall of the groove is fitted with the outer wall of the spring.

Further, the port of the casing is indented with a step surface, the edge of the static ring is provided with a convex edge corresponding to the stepped surface, and the cover body presses the convex edge against the surface. on the stair surface.

Through the technical scheme of the present invention, the following technical effects can be achieved:

During the normal operation of the present invention, the first-stage sealing structure is realized by two parallel conical surfaces, the seat structure is set to block one side of the first-stage sealing structure, and the second sealing structure is realized by magnetic bonding, wherein, The sealing effect of the two-stage sealing structure is evaluated by the sensing data of the pressure sensing sheet. During the process of ensuring the effective fit between the seat structure and the moving coil, the pressing force of the spring on the pressure sensing sheet through the pressure plate is stable, but when the seal fails When the seat structure is separated from the moving coil, the squeezing force on the spring increases, and this situation can be sensed by the pressure sensing sheet to obtain the basis for the alarm, thereby realizing the effective monitoring of the double-stage seal.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the sectional view of the double-sealing structure of the intelligent monitoring type reducer;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is a partial enlarged view at B in Fig. 1;

Figure 4 is a partial schematic diagram of the double-sealed structure of the intelligent monitoring type reducer after the casing is omitted;

Fig. 5 is a partial enlarged view at D in Fig. 4;

6 is a cross-sectional view of the double-sealed structure of the intelligent monitoring type reducer after omitting the housing;

7 is a partial cross-sectional view of the base structure;

Figure 8 is a sectional view of the static ring;

Figure 9 is a schematic diagram of the setting method of the guide rod;

Fig. 10 is a partial enlarged view at C in Fig. 1;

Fig. 11 is a partial enlarged view at E in Fig. 10;

Reference numerals: housing 1, shaft body 2, static ring 3, cylindrical cavity 31, convex edge 32, guide groove 33, moving ring 4, first-stage sealing structure 5, seat structure 6, sealing ring 61, groove body 62, pressure plate 7, guide belt 71, guide rod 72, spring 8, cover body 9, annular boss 91, oil seal structure 92, sealing strip 92a, oil seal cavity 92b, recessed area 92c, extrusion rod 10, pressure sensing Sheet 11 , magnetic layer 12 , buffer cavity 13 .

detailed description

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

In the description of the present invention, it should be noted that "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. This embodiment is written in a progressive manner.

As shown in Figures 1 to 11, a double-sealing structure of an intelligent monitoring type reducer is arranged between the inner side of the casing 1 of the reducer and the outer side of the shaft body 2, and includes: a static ring 3 fitted with the inner wall of the casing 1, And the moving ring 4 attached to the outer wall of the shaft body 2, the inner wall of one end of the static ring 3 and the outer wall of the moving ring 4 are two parallel conical surfaces, and a first-stage sealing structure 5 is formed between the two conical surfaces; The inner wall of the other end forms a cylindrical cavity 31 connected with the conical surface, and the double-sealing structure further includes a seat structure 6 sealingly fitted with the cylindrical cavity 31, a pressure plate 7 and a spring 8 arranged between the two. The seat body structure 6 and the moving ring 4 are attached through a magnetic structure, and the second-level sealing structure is formed by blocking one side of the first-stage sealing structure 5, and the static ring 3 is pressed by the cover body 9; At least one extruding rod 10 of 9, the extruding rod 10 is used to adjust the initial position of the pressing plate 7, and a pressure sensing sheet 11 is arranged between the pressing plate 7, and the pressure sensing sheet 11 is connected with the monitoring system.

As shown in FIGS. 1 to 6 , during the operation of the double-sealing structure of the intelligent monitoring type reducer in the present invention, the first-stage sealing structure 5 meets the requirements of the first-stage sealing. By controlling the gap between the two to be within 1 ～2mm, an effective non-contact seal can be obtained, and the consumption of parts caused by wear is reduced; due to the complex working environment of the reducer, there are many factors that damage the seal, therefore, in the present invention, the seat structure is provided with 6 pairs of the first stage One side of the sealing structure 5 is blocked, and the sealing effect of the second sealing structure is ensured through the sealing fit with the inner wall of the cylindrical cavity 31 and the magnetic fit with the moving ring 4 respectively.

When the position of the pressing plate 7 is fixed by the pressing rod 10, the spring 8 will provide an effective pressing force to the seat body structure 6 to increase the fitting effectiveness of the magnetic fitting position, even when the moving coil 4 is relative to the seat body When the structure 6 rotates and causes the wear of the two, it can still ensure the effectiveness of the two and the sealing effect; wherein, the sealing effect of the two-stage sealing structure is evaluated by the sensing data of the pressure sensing sheet 11. 6 During the process of ensuring effective fit with the moving coil 4, the pressing force of the spring 8 on the pressure sensing piece 11 through the pressure plate 7 is stable, but when the seal fails and the seat structure 6 is separated from the moving coil 4, the spring 8 The pressing force increases, and this situation can be sensed by the pressure sensing sheet 11 to obtain the basis for an alarm, thereby realizing the effective monitoring of the double-stage seal.

Preferably, the magnetic structure is the magnetic layer 12 disposed between the base structure 6 and the moving coil 4 and fixedly connected to the base structure 6 . As shown in FIG. 7 , this external installation method makes the installation and replacement of the magnetic layer 12 more convenient. After the position of the pressure plate 7 is stabilized, the pressure-sensitive sheet 11 can also be used to monitor the wear of the magnetic layer. When After the thickness of this level is reduced, the length of the spring 8 will be appropriately increased in the process of squeezing the seat structure 6 to make up for the reduction in thickness, so the pressure reacting on the pressure plate 7 will be reduced, and the pressure will be reduced through the pressure sensing sheet. The timing of replacing the magnetic layer 12 can be known from the sensing result of 11 .

The edge of the seat structure 6 on one side of the first-stage sealing structure 5 is a chamfered structure, and the magnetic layer 12 is indented inward relative to the inner wall of the cylindrical cavity 31 , so that the sealing structure of the first-stage sealing structure 5 is inward. A buffer cavity 13 is formed on one side of the plug. Referring to FIG. 2 , the buffer cavity 13 enables the oil passing through the first-stage sealing structure 5 to obtain a relatively stable state. When the oil is confined in it and does not circulate, the possibility of leakage can be reduced due to its own viscosity. .

For the sealing of the seat body structure 6 and the inner wall of the static ring 3, a sealing groove is provided on the periphery of the seat body structure 6, and a sealing ring 61 is embedded in the sealing groove, as shown in FIG. 7, so as to obtain a more convenient sealing form.

As a preference of the above-mentioned embodiment, a guide rod 72 is provided between the base structure 6 and the pressing plate 7 for guiding the two in the axial direction of the shaft body 2 . Specifically, as shown in FIG. 9 , taking the guide rod 72 disposed on the pressure plate 7 as an example, the seat structure 6 can be provided with a guide hole for the guide rod 72 to move, and the guide rod 72 can be guided by the fit of the guide hole. , so as to avoid driving the seat structure 6 to rotate during the rotation of the moving ring 4 and affecting the sealing effect of the peripheral sealing ring 61 . In order to further optimize the above technical effect, a guide structure is provided between the cylindrical cavity 31 and the pressure plate 7. Specifically, as shown in FIGS. 5 and 8, the guide structure includes a guide belt 71 located at the edge of the pressure plate 7, and a guide belt 71 disposed on the static ring. 3. The guide groove 33 on the inner wall and matched with the guide belt 71 can be effectively guided by the relative sliding of the two, wherein the length of the guide groove 33 needs to be controlled to avoid affecting the peripheral sealing of the seat structure 6.

Regarding the setting method of the extrusion rod 10, it is threadedly connected to the threaded hole on the cover body 9, and the self-locking thread can achieve sealing, and the positioning of the extrusion rod 10 in the axial direction of the shaft body 2, in the pressure plate 7 When adjusting the initial position of the device, the extruding rod 10 can be rotated, which is convenient and quick.

In order to ensure the positional stability of the spring 8 , as shown in FIG. 7 , the base structure 6 is provided with a groove body 62 for accommodating the end of the spring 8 . Carry out effective radial limit to prevent it from moving.

As a preference of the above embodiment, the port of the housing 1 is indented with a step surface, the edge of the static ring 3 is provided with a convex edge 32 corresponding to the stepped surface, and the cover body 9 presses the convex edge 32 against the stepped surface. Above, as shown in FIG. 8 , the above method realizes an axial limiting method of the static ring 3 , which can effectively ensure the stability of the installation.

In the present invention, a sealing method between the cover body 9 and the shaft body 2 is provided. As shown in FIG. 10 , the cover body 9 has a hole for the shaft body 2 to pass through, wherein the inner wall of the hole is provided with an annular boss 91 , Effective sealing is achieved by providing an oil seal structure 92 on the annular boss 91 .

Among them, the oil seal structure 92 covers the inner ring of the annular boss 91 through the groove, and two sealing strips 92a are arranged side by side along the axial direction of the shaft body 2 on the opposite side of the shaft body 2. The two sealing strips 92a and the shaft body 2 An oil seal cavity 92b is formed therebetween. Sealing is achieved by the two sealing strips 92a being attached to the shaft body 2, and the oil seal cavity 92b provided therein can seal up part of the leaked oil. 11 , a concave area 92c is provided on the side of the sealing strip 92a facing the inner side of the housing 1, so as to buffer and reflect the oil reaching here, and reduce the possibility of flowing out from there.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims

An intelligent monitoring type reducer double-sealing structure, which is arranged between the inner side of the casing (1) of the reducer and the outer side of the shaft body (2), is characterized in that, comprising:

A static ring (3) fitted with the inner wall of the housing (1), and a moving ring (4) fitted with the outer wall of the shaft body (2), the inner wall of one end of the static ring (3) and the moving ring The outer wall of (4) is two parallel conical surfaces, and a first-stage sealing structure (5) is formed between the two conical surfaces;

The inner wall of the other end of the static ring (3) forms a cylindrical cavity (31) connected with the conical surface on the static ring (3), and the double sealing structure further comprises a cylindrical cavity (31) connected to the cylindrical cavity (31). The seat body structure (6), the pressure plate (7) and the spring (8) arranged therebetween are sealed and fitted, the seat body structure (6) and the moving coil (4) are bonded by a magnetic structure, And one side of the first-stage sealing structure (5) is blocked to form a second-stage sealing structure, and the static ring (3) is pressed by the cover body (9);

Also includes at least one pressing rod (10) penetrating the cover body (9), the pressing rod (10) is used to adjust the initial position of the pressing plate (7), and is connected with the pressing plate (7) A pressure sensing sheet (11) is arranged therebetween, and the pressure sensing sheet (11) is connected with the monitoring system.
The double-sealing structure of the intelligent monitoring type reducer according to claim 1, characterized in that, the magnetic structure is arranged between the seat structure (6) and the moving coil (4), and is connected to the magnetic structure. The base structure (6) is fixedly connected to the magnetic layer (12).
The double-sealing structure of the intelligent monitoring type reducer according to claim 2, characterized in that, the edge of the seat structure (6) on one side of the first-stage sealing structure (5) is a chamfered structure, and The magnetic layer (12) is indented inward relative to the inner wall of the cylindrical cavity (31), thereby forming a buffer cavity (13) on the blocked side of the first-stage sealing structure (5).
The double-sealing structure of the intelligent monitoring type reducer according to any one of claims 1 to 3, wherein a sealing groove is provided on the periphery of the seat structure (6), and a sealing ring (6) is embedded in the sealing groove. 61).
The double-sealing structure of the intelligent monitoring type reducer according to claim 4, characterized in that a guide rod (72) is arranged between the seat structure (6) and the pressing plate (7), which is used for moving the two along the The shaft body (2) is axially guided.
The double-sealing structure of the intelligent monitoring type reducer according to claim 5, characterized in that a guide structure is provided between the cylindrical cavity (31) and the pressing plate (7).
The double-sealing structure of the intelligent monitoring type reducer according to claim 6, characterized in that, the guide structure comprises a guide belt (71) located at the edge of the pressing plate (7), and a guide belt (71) disposed on the static ring (3) A guide groove (33) on the inner wall and adapted to the guide belt (71).
The double-sealing structure of the intelligent monitoring type reducer according to claim 1, characterized in that, the extrusion rod (10) is threadedly connected to a threaded hole located on the cover body (9).
The double-sealing structure of the intelligent monitoring type reducer according to claim 1, characterized in that a groove body (62) for accommodating the end of the spring (8) is provided on the seat body structure (6), The inner wall of the groove body (62) is in contact with the outer wall of the spring (8).
The double-sealing structure of the intelligent monitoring type reducer according to claim 1, characterized in that, the port of the casing (1) is indented with a step surface, and the edge of the static ring (3) is provided with The convex edge (32) corresponding to the step surface, and the cover body (9) presses the convex edge (32) against the stepped surface.