CN111828519B

CN111828519B - Combined type fine control buffer device

Info

Publication number: CN111828519B
Application number: CN202010803965.XA
Authority: CN
Inventors: 陈华安; 周苗; 何存
Original assignee: HEBEI KANE ELECTROMECHANICAL EQUIPMENT CO Ltd
Current assignee: HEBEI KANE ELECTROMECHANICAL EQUIPMENT CO Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2022-05-31
Anticipated expiration: 2040-08-11
Also published as: CN111828519A

Abstract

The invention discloses a combined type fine control buffer device which comprises a main control ring, a plurality of secondary control rings arranged inside the main control ring and an installation block arranged outside the main control ring, wherein the secondary control rings are arranged on the inner side of the main control ring; the main control ring comprises an inner ring and an outer ring which are concentrically arranged, and a plurality of secondary control rings are sequentially arranged between the inner ring and the outer ring and are connected with the main control ring; at least one elastic mechanism is arranged in the secondary control ring, two ends of the elastic mechanism are respectively abutted against the inner wall of the secondary control ring, and the elastic mechanism comprises a connecting rod and an elastic element which are coaxially and sequentially connected; the installation piece is provided with the even number along the periphery of master control ring. The invention is suitable for the connection of machine parts, mechanisms and equipment in the same plane, realizes effective buffering at the connection part, protects the machine, prolongs the service life of the machine, improves the stability and the accuracy of operation and use, can provide accurate buffering acting force for the machine through the regulation and control of the elastic mechanism, and realizes the multi-direction differential buffering protection effect through different elastic mechanisms in different directions.

Description

Combined type fine control buffer device

Technical Field

The invention relates to the technical field of mechanical buffering, in particular to buffering of joints of various machine parts, mechanisms, equipment and the like, and particularly relates to a combined type fine control buffering device.

Background

The buffer parts are required to be used in various mechanical equipment to weaken larger impact force, protect the mechanical equipment, reduce damage, prolong service life and stabilize operation. The common buffer part is a hydraulic cylinder or a spring part, the hydraulic cylinder needs to be horizontally installed, the temperature and the humidity of the working environment have requirements, the requirement on safety is high, and the use in precision machinery is limited; the spring part has wide application range, low requirement on environment and high safety, but the buffering capacity of a single spring is limited, precision control cannot be performed, the single spring only buffers in a single direction, and the springs are simply overlapped to occupy more space, so that the mechanical structure is large in size, and therefore, a further solution is needed to solve the problems.

Disclosure of Invention

The invention aims to provide a combined type fine control buffer device to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a combined type fine control buffer device comprises a main control ring, a plurality of secondary control rings arranged inside the main control ring and an installation block arranged outside the main control ring;

The secondary control rings are sequentially arranged between the inner ring and the outer ring and are connected with the main control ring;

be provided with at least one elastic mechanism in the inferior accuse intra-annular, elastic mechanism's both ends butt respectively inferior accuse ring's inner wall, elastic mechanism includes coaxial connecting rod, the elastic element who connects gradually, the elastic element include by interior pressure spring, interior casing, external pressure spring, the shell body that cup joints in proper order outside to, and with interior butt spare that interior pressure spring is contradicted, with the outer butt spare that external pressure spring is contradicted, the shell body interior casing all has relative open end and blind end, the shell body the open end with the open end of interior casing sets up mutually back of the body mutually, the blind end of shell body has the hole of dodging, interior casing passes dodge the hole with the shell body cup joints, the both ends of external pressure spring respectively with the blind end of shell body outer butt spare offsets and leans on, the both ends of interior pressure spring respectively with the blind end of interior casing, The inner abutting connection piece abuts against the inner abutting connection piece;

the mounting blocks are used for connecting external machine parts, and the number of the mounting blocks is even along the periphery of the main control ring.

In a preferred embodiment of the invention, the spring constant of the external compression spring and the spring constant of the internal compression spring are different.

In a preferred embodiment of the present invention, the external compression spring is selected from a group of external compression springs, the internal compression spring is selected from a group of internal compression springs, and the group of external compression springs and the group of internal compression springs respectively include at least three compression springs with different elastic coefficients.

In a preferred embodiment of the present invention, a radial two ends of the secondary control ring are respectively connected to the outer circumference and the inner circumference of the primary control ring through springs.

In a preferred embodiment of the present invention, the plurality of secondary control rings are abutted in sequence.

In a preferred embodiment of the present invention, adjacent secondary control rings are fixedly connected.

In a preferred embodiment of the present invention, the inner wall of the secondary control ring is provided with a slide rail, and one end of the elastic mechanism is slidably connected to the slide rail.

In a preferred embodiment of the present invention, four mounting blocks are uniformly arranged along the periphery of the main control ring.

In a preferred embodiment of the present invention, a plurality of the elastic mechanisms are disposed in the secondary control ring, and the plurality of the elastic mechanisms intersect at a central point of the secondary control ring.

In a preferred embodiment of the present invention, a protective sleeve is disposed outside the elastic element, and the protective sleeve is sleeved on the connecting rod.

In a preferred embodiment of the present invention, the mounting block is provided with a snap ring groove along a circumferential direction thereof.

In a preferred embodiment of the present invention, the elastic mechanism is disposed along a radial direction of the secondary control ring.

In a preferred embodiment of the present invention, the outer housing and the inner housing are integrally formed.

In a preferred embodiment of the present invention, the external abutting member includes at least two external abutting rods disposed along a circumferential direction of the external compression spring, one end of each external abutting rod abuts against the external compression spring, and the other end of each external abutting rod is fixedly connected to a connecting rod.

In a preferred embodiment of the present invention, an abutting ring is disposed between the external abutting rod and the external compression spring, and the abutting ring is capable of moving in a gap formed by the outer shell and the inner shell.

In a preferred embodiment of the present invention, the elastic element further includes a first guiding component, and the first guiding component is disposed between an outer periphery of the abutting ring and an inner wall of the outer shell, and/or between an inner periphery of the abutting ring and an outer wall of the inner shell.

In a preferred embodiment of the present invention, the inner abutting member includes at least one inner abutting rod, one end of the inner abutting rod abuts against the inner spring, and the other end of the inner abutting rod is fixedly connected to the connecting rod.

In a preferred embodiment of the present invention, an abutting piece is disposed between the inner abutting rod and the inner compression spring, and the abutting piece is capable of moving in the inner housing.

In a preferred embodiment of the present invention, the elastic element further comprises a second guiding component, and the second guiding component is disposed between the outer periphery of the abutting piece and the inner wall of the inner housing.

In a preferred embodiment of the present invention, the first guide assembly and the second guide assembly each include a guide block and a mating guide slot.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention is suitable for the connection of machine parts, mechanisms and equipment in the same plane, realizes effective buffering at the connection part, protects the machine, prolongs the service life of the machine, improves the stability and the accuracy of operation and use, can provide accurate buffering acting force for the machine through the regulation and control of the elastic mechanism, and realizes the multi-direction differential buffering protection effect through different elastic mechanisms in different directions, thereby integrating a plurality of buffering parts, being convenient to set, reducing the occupied space and being beneficial to improving the structural simplicity of the machine.

(2) The external machine parts are connected with the mounting blocks on the main control ring, so that the device is mounted, primary buffering inside the machine is realized through the main control ring and the secondary control ring, secondary buffering inside the machine is realized through the elastic mechanism, further, tertiary buffering inside the machine can be realized through the sliding connection between the sliding rail on the inner wall of the secondary control ring and the elastic mechanism, the impact force of an external load is synergistically reduced through the tertiary buffering, the service life of the machine is prolonged, and the stability and the accuracy of operation and use are further improved.

(3) According to the invention, the synchronous buffering at two ends is realized through the external pressure spring and the internal pressure spring in the elastic element, so that the impact force of an external load is further reduced; furthermore, two modes of tiny buffering and large-amplitude buffering are provided through the difference of the elastic coefficients of the external pressure spring and the internal pressure spring, and various impact conditions can be met; furthermore, the outer pressure spring group and the inner pressure spring group respectively comprise at least three springs with different elastic coefficients, so that various buffer ranges are realized for the combination of the outer pressure spring and the inner pressure spring, and the device is suitable for different working environments.

(4) According to the invention, through the arrangement of the abutting ring and the abutting sheet, the contact area between the elastic element and the external pressure spring or the internal pressure spring is increased, so that the external pressure spring or the internal pressure spring can stably extend and retract, and the use stability of the elastic element is improved.

(5) According to the invention, through the arrangement of the first guide assembly and the second guide assembly, the accuracy of the moving direction of the abutting ring or the abutting sheet is ensured, the friction between the abutting ring or the abutting sheet and the shell is reduced, and the moving fluency is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the secondary control ring of the present invention;

FIG. 3 is an enlarged perspective view of an elastic element according to an embodiment of the present invention;

FIG. 4 is an exploded view of the elastic element of FIG. 3;

FIG. 5 is an enlarged perspective view of an elastic element according to another embodiment of the present invention;

FIG. 6 is an exploded view of the spring of FIG. 5;

fig. 7 is an enlarged perspective view of a second guide assembly of the elastic element in fig. 5.

Specifically, 100-master ring, 110-inner ring, 120-outer ring, 130-spring,

200-secondary control ring, 210-elastic mechanism, 220-connecting rod, 230-elastic element, 231-opening end, 232-closing end, 233-avoidance hole, 240-internal pressure spring, 241-internal shell, 242-internal abutting rod, 243-abutting piece, 244-internal abutting rod, 250-external pressure spring, 251-external shell, 252-external abutting rod, 253-abutting ring, 254-connecting piece, 255-external abutting rod, 260-sliding rail, 261-guiding block, 262-guiding groove,

300-mounting block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Fig. 1 shows a schematic perspective view of the combined fine control buffer device.

As shown in fig. 1, a combined fine control buffering apparatus includes a main control loop 100, a plurality of secondary control loops 200 disposed inside the main control loop 100, and a mounting block 300 disposed outside the main control loop 100. The main control ring 100 includes an inner ring 110 and an outer ring 120 concentrically arranged, and a plurality of secondary control rings 200 are sequentially arranged between the inner ring 110 and the outer ring 120 and connected to the main control ring 100. In this embodiment, five secondary control loops 200 are sequentially disposed between the inner loop 110 and the outer loop 120 of the main control loop 100, and of course, the number of the secondary control loops 200 may be two, three, four, six, or more, and is set according to the radial size of the main control loop 100 and the machine buffering requirement. The mounting blocks 300 are used to connect external machine parts, and an even number of the mounting blocks 300 are provided along the outer circumference of the main control ring 100 to be symmetrically installed. In this embodiment, four mounting blocks 300 are uniformly arranged along the periphery of the main control ring 100, but not limited thereto, and two, six, or more mounting blocks 300 may be uniformly arranged along the periphery of the main control ring 100 according to the connection requirement of machine parts. The mounting block 300 is preferably provided with snap ring grooves for connection with external machine components. The invention is suitable for the connection of machine parts, mechanisms and equipment in the same plane, realizes effective buffering at the connection part, protects the machine, prolongs the service life of the machine, improves the stability and the accuracy of operation and use, can provide accurate buffering acting force for the machine through the regulation and control of the elastic mechanism 210, and realizes the multi-direction differential buffering protection effect through different elastic mechanisms 210 in different directions, thereby integrating a plurality of buffering parts, being convenient and fast to set, reducing the occupied space and being beneficial to improving the structural simplicity of the machine.

Fig. 2 is a schematic perspective view showing an enlarged structure of a secondary control loop 200 in the present combined fine control buffer device.

As shown in fig. 2, at least one elastic mechanism 210 is disposed in the secondary control ring 200, two ends of the elastic mechanism 210 respectively abut against an inner wall of the secondary control ring 200, and the elastic mechanism 210 includes a connecting rod 220 and an elastic element 230 that are coaxially connected in sequence. In this embodiment, two elastic mechanisms 210 are disposed in the secondary control loop 200, but it is not limited thereto, and three, four or more elastic mechanisms 210 may be disposed, and in this case, the elastic mechanisms are not limited to the vertical crossing.

The inner wall of the secondary control ring 200 is preferably provided with a slide rail 260, and one end of the elastic mechanism 210 is slidably connected to the slide rail 260. In this embodiment, the slide rail 260 is disposed in the secondary control ring 200 and integrally formed therewith, and of course, the slide rail 260 may be additionally disposed in the secondary control ring 200. The slide rail 260 is generally provided with a length that enables the resilient mechanism 210 to swing 20-50.

In the invention, external machine parts are connected with the mounting block 300 on the main control ring 100, so that the device is mounted, primary buffering inside the machine is realized through the main control ring 100 and the secondary control ring 200, secondary buffering inside the machine is realized through the elastic mechanism 210, further, tertiary buffering inside the machine is realized through the sliding connection of the sliding rail 260 on the inner wall of the secondary control ring 200 and the elastic mechanism 210, the impact force of an external load is synergistically reduced through the tertiary buffering, the service life of the machine is prolonged, and the stability and the accuracy of operation and use are further improved.

Fig. 3 and 4 respectively show a perspective enlarged structure diagram of the elastic element 230 in an embodiment of the present combined fine control damping device, and an exploded schematic diagram thereof.

As shown in fig. 3 and 4, the elastic element 230 includes an inner spring 240, an inner housing 241, an outer spring 250, and an outer housing 251, which are sequentially sleeved from inside to outside, and an inner abutting member abutting against the inner spring 240 and an outer abutting member abutting against the outer spring 250. The outer shell 251 and the inner shell 241 each have an open end 231 and a closed end 232 opposite to each other, the open end 231 of the outer shell 251 is opposite to the open end 231 of the inner shell 241, and the closed end 232 of the outer shell 251 has an avoiding hole 233, so that the inner shell 241 is sleeved with the outer shell 251 through the avoiding hole 233. The two ends of the external pressure spring 250 are respectively abutted against the closed end 232 of the outer shell 251 and the external abutting part, and the two ends of the internal pressure spring 240 are respectively abutted against the closed end 232 of the inner shell 241 and the internal abutting part, so that the buffer effect is realized by the elastic acting force of the pressure spring, and the synchronous buffer of the two ends of the external pressure spring 250 and the internal pressure spring 240 is realized, thereby further reducing the impact force of the external load.

In order to make the expansion and contraction buffering process smooth and prolong the service life of the elastic mechanism 210, the axes of the connecting rod 220 and the elastic element 230 are preferably coincident, i.e., at least the axes of the connecting rod 220, the inner pressure spring 240 and the outer pressure spring 250 are coincident.

In a preferred embodiment of the present invention, the elastic modulus of the outer spring 250 is different from that of the inner spring 240, thereby providing two modes of small and large damping, coping with various impact situations, and controlling the damping force more precisely.

In a preferred embodiment of the present invention, the external compression spring 250 is selected from a group of external compression springs 250, the internal compression spring 240 is selected from a group of internal compression springs 240, and the group of external compression springs 250 and the group of internal compression springs 240 respectively include at least three compression springs with different elastic coefficients, so as to achieve a plurality of buffer ranges for the combination of the external compression spring 250 and the internal compression spring 240, and adapt to different working environments. For example, the set of outer compression springs 250 includes 100N springs 130, 200N springs 130, and 300N springs 130, and the set of inner compression springs 240 includes 25N springs 130, 50N springs 130, and 75N springs 130, for example, so that technicians can choose and adjust the springs according to field conditions to combine optimal cushioning effects.

In a preferred embodiment of the present invention, as shown in fig. 1 and 2, two radial ends of the secondary control ring 200 are respectively connected to the outer circumference and the inner circumference of the main control ring 100 through the spring 130, so as to further improve the buffering effect, provide a deformation space for mutual extrusion between the plurality of secondary control rings 200, prevent the device from being damaged, and prolong the service life.

In order to enhance the integrity between the secondary control rings 200 and reduce the deflection probability, in a preferred embodiment of the present invention, the secondary control rings 200 abut against each other in sequence, or in another preferred embodiment of the present invention, the adjacent secondary control rings 200 are fixedly connected.

In a preferred embodiment of the present invention, a plurality of elastic mechanisms 210 are disposed in the secondary control ring 200, and the plurality of elastic mechanisms 210 intersect at a central point of the secondary control ring 200, so as to improve the buffering effect.

In a preferred embodiment of the present invention, the elastic mechanism 210 is disposed along a radial direction of the secondary control ring 200, thereby facilitating manufacturing and installation, and facilitating debugging.

In a preferred embodiment of the present invention, a protective sleeve is disposed outside the elastic element 230, and the protective sleeve is sleeved on the connecting rod 220 to enhance the strength of the elastic mechanism 210 and prolong the service life.

In a preferred embodiment of the present invention, as shown in fig. 3-4, the external abutting member includes at least two external abutting rods 252 disposed along the circumference of the external compression spring 250, one end of each external abutting rod 252 abuts against the external compression spring 250, and the other end is fixedly connected to the connecting rod 220, so as to push the external compression spring 250 to expand and contract.

Fig. 5 to 6 sequentially show a perspective enlarged structure of the elastic element 230 and an explosion diagram in another embodiment of the combined type fine control buffer device, in which the outer abutting member and the inner abutting member are connected to the outer pressure spring 250 and the inner pressure spring 240 by using a relatively complicated structure, so as to improve the stability of the connection.

In a preferred embodiment of the present invention, as shown in fig. 5 to 6, a butting ring 253 is disposed between the external butting rod 252 and the external compression spring 250, and the butting ring 253 can move in a gap formed between the outer casing 251 and the inner casing 241 to increase a contact area between the external butting rod 252 and the external compression spring 250, so that the external compression spring 250 can be smoothly stretched and contracted, and the stability of the use of the elastic element 230 is improved. Further, the outer abutting rod 252 is provided in plurality, and is provided along the circumferential direction of the abutting ring 253. In order to improve the overall stability of the external abutting rods 252, a connecting piece 254 is disposed at the other end of the external abutting rods 252, so that the abutting ring 253, the external abutting rods 252 and the connecting piece 254 form an integral body, thereby improving the movement stability. In order to facilitate the installation and detachment of the elastic element 230 and the connection rod 220, an external connection rod 255 is preferably disposed on the connection piece 254, and is detachably connected to the connection rod 220 through the external connection rod 255, so as to facilitate the installation and detachment.

In a preferred embodiment of the present invention, the elastic element 230 further includes a first guiding component, which is disposed between the outer circumference of the abutting ring 253 and the inner wall of the outer shell 251, and/or between the inner circumference of the abutting ring 253 and the outer wall of the inner shell 241, so as to ensure the accuracy of the moving direction of the abutting ring 253, reduce the friction between the abutting ring 253 and the outer shell 251 or the inner shell 241, and improve the smoothness of the movement.

In a preferred embodiment of the present invention, as shown in fig. 5-6, the internal abutting member comprises at least one internal abutting rod 242, one end of the internal abutting rod 242 abuts against the internal compression spring 240, and the other end is fixedly connected to the connecting rod 220, so as to push the internal compression spring 240 to expand and contract.

In a preferred embodiment of the present invention, an abutting piece 243 is disposed between the inner abutting rod 242 and the inner spring 240, and the abutting piece 243 can move in the inner housing 241 to increase the contact area between the inner abutting rod 242 and the inner spring 240, so that the inner spring 240 can expand and contract smoothly, and the stability of the use of the elastic element 230 is improved. To facilitate the assembly and disassembly of the elastic element 230 and the connecting rod 220, an inner joint rod 244 is preferably disposed on the inner abutting rod 242, and is detachably connected to the connecting rod 220 through the inner joint rod 244 to facilitate the assembly and disassembly.

Fig. 7 is a perspective view showing an enlarged structure of the second guide assembly of the elastic element 230 in the present combined type fine control buffer apparatus.

In a preferred embodiment of the present invention, as shown in fig. 7, the elastic element 230 further includes a second guiding component, which is disposed between the outer circumference of the abutting piece 243 and the inner wall of the inner casing 241, so as to ensure the accuracy of the moving direction of the abutting piece 243, reduce the friction between the abutting piece 243 and the inner casing 241, and improve the smoothness of the movement.

Preferably, as shown in fig. 7, the first guide assembly and the second guide assembly each include a guide block 261 and a matching guide groove 262. Specifically, taking the second guide assembly as an example, the second guide assembly includes a guide block 261 and a matching guide groove 262, in this embodiment, the guide block 261 is provided on the abutting piece 243, and is provided along the circumferential direction thereof, the guide groove 262 is provided on the inner wall of the inner case 241, the accuracy of the moving direction of the abutting piece 243 is ensured by the guide of the guide block 261, and the radius of the abutting piece 243 can be made smaller than the inner radius of the inner case 241 by the contact of the guide block and the guide groove, so that the friction between the abutting piece 243 and the inner wall of the inner case 241 is reduced, and the abutting piece 243 can slide smoothly.

In a preferred embodiment of the present invention, the outer housing 251 and the inner housing 241 are integrally formed, so as to enhance the strength performance of the elastic element 230.

In conclusion, the invention is suitable for the connection of machine parts, mechanisms and equipment in the same plane, realizes effective buffering at the connection part, protects the machine, prolongs the service life of the machine, improves the stability and the accuracy of operation and use, can provide accurate buffering acting force for the machine through the regulation and control of the elastic mechanism, and realizes the multi-direction differential buffering protection effect through different elastic mechanisms in different directions, thereby integrating a plurality of buffering parts, being convenient to set, reducing the occupied space and being beneficial to improving the structural simplicity of the machine.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to make the description as a whole, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A combined type fine control buffer device is characterized by comprising a main control ring, a plurality of secondary control rings arranged inside the main control ring and an installation block arranged outside the main control ring;

The secondary control rings are sequentially arranged between the inner ring and the outer ring and connected with the main control ring;

be provided with at least one elastic mechanism in the inferior accuse intra-annular, elastic mechanism's both ends butt respectively inferior accuse ring's inner wall, elastic mechanism includes coaxial connecting rod, the elastic element who connects gradually, the elastic element include by interior pressure spring, interior casing, external pressure spring, the shell body that cup joints in proper order outside to, and with interior butt spare that interior pressure spring is contradicted, with the outer butt spare that external pressure spring is contradicted, the shell body interior casing all has relative open end and blind end, the shell body the open end with the open end of interior casing sets up mutually back of the body mutually, the blind end of shell body has the hole of dodging, interior casing passes dodge the hole with the shell body cup joints, the both ends of external pressure spring respectively with the blind end of shell body outer butt spare offsets and leans on, the both ends of interior pressure spring respectively with the blind end of interior casing, The inner abutting connection piece abuts against the inner abutting connection piece; the mounting blocks are used for connecting external machine parts, and the number of the mounting blocks is even along the periphery of the main control ring;

The elastic coefficient of the external pressure spring is different from that of the internal pressure spring.

2. The combined fine control buffer device according to claim 1, wherein the external compression spring is selected from an external compression spring set, the internal compression spring is selected from an internal compression spring set, and the external compression spring set and the internal compression spring set respectively include at least three compression springs with different elastic coefficients.

3. The combined fine control buffer device according to claim 1, wherein a radial direction both ends of the secondary control ring are respectively connected with the outer circumference and the inner circumference of the primary control ring through springs.

4. The combined fine control buffer device according to claim 1, wherein a plurality of the secondary control rings abut in sequence.

5. The combined fine control buffer device according to claim 1, wherein adjacent secondary control rings are fixedly connected.

6. The combined type fine control buffering device according to claim 1, wherein a sliding rail is arranged on the inner wall of the secondary control ring, and one end of the elastic mechanism is slidably connected with the sliding rail.

7. The combined fine control buffer device according to claim 1, wherein four of the mounting blocks are uniformly arranged along the periphery of the main control ring.

8. The combined fine control buffer device according to claim 1, wherein a plurality of the elastic mechanisms are disposed in the secondary control ring, and intersect at a center point of the secondary control ring.

9. The combined precise control buffer device according to claim 1, wherein a protective sleeve is arranged outside the elastic element, and the protective sleeve is sleeved with the connecting rod.