CN211737848U

CN211737848U - Vibration isolator with limiting function

Info

Publication number: CN211737848U
Application number: CN201922301653.4U
Authority: CN
Inventors: 肖新标; 梁树林; 周信; 刘宇航; 祁孟盂; 张保军
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-10-23
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a vibration isolator with limiting function, which comprises an upper shell, a lower shell, a steel spring assembly and a height adjusting mechanism, wherein the lower shell is positioned below the upper shell and is matched and connected with the upper shell; its simple structure uses reliably stably, and it is spacing to carry out circumference through last casing and casing down, carries out the axial through spacing post spacing to form three-dimensional limit structure, realize three-dimensional limit function, can effectively avoid the vibration isolation heavy object to produce great displacement, improve big load, shock resistance, can also play the effect of protection steel spring simultaneously.

Description

Vibration isolator with limiting function

Technical Field

The utility model relates to a damping technical field, concretely relates to isolator with limit function.

Background

The steel spring has the advantages of uniform material, stable performance, high bearing capacity, good durability, reliable calculation and the like. The vibration isolator taking the steel spring as the main body at present has the advantages of good vibration damping effect, stable performance, long service life and the like, and is widely adopted. However, in the case of special conditions, such as large load, large impact, etc., the common steel spring vibration isolator cannot meet the use requirements, so that it is very valuable to design a high-performance vibration isolator with large load and impact resistance to be applied to various working conditions.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a isolator with limit function to solve the big load of current isolator, the weak problem of shock resistance.

The utility model provides an above-mentioned technical problem's technical scheme as follows: the vibration isolator with the limiting function comprises an upper shell, a lower shell, a steel spring assembly and a height adjusting mechanism, wherein the lower shell is positioned below the upper shell and is in matched connection with the upper shell;

the height adjusting mechanism comprises a limiting column arranged in the lower shell, a central column arranged on the bottom end face of the upper shell and connected with the limiting column in a matched mode, and a height adjusting gasket arranged on the upper end face of the limiting column and connected with the central column in a matched mode.

Further, the lower shell comprises a base, a supporting table and a supporting column arranged between the base and the supporting table, the limiting column is located in the supporting column, a limiting hole communicated with the limiting column is formed in the supporting table, and the central column penetrates through the limiting hole and is respectively connected with the height adjusting gasket and the limiting column in a matched mode.

Furthermore, a threaded hole communicated with the limiting hole is formed in the limiting column, a threaded section matched with the threaded hole is formed in the lower end of the central column, and the threaded section penetrates through the height adjusting gasket and the limiting hole respectively and is connected with the threaded hole in the limiting column in a matched mode.

Furthermore, the lower end of the upper shell is provided with a boss, a supporting table of the lower shell is provided with a groove matched with the boss, and the boss is in clearance fit with the groove.

Furthermore, a mounting hole is formed in the boss of the upper shell, an embedding platform corresponding to the mounting hole is arranged in the groove of the lower shell supporting platform, the steel spring assembly is arranged between the embedding platform and the mounting hole, and the mounting hole is located on the periphery of the central column.

Further, go up the casing with be provided with pre-compaction subassembly between the casing down, just the upper end of pre-compaction subassembly set up in inside the last casing, the bottom of pre-compaction subassembly runs through the casing down.

Further, the pre-compaction subassembly includes that screw rod and cooperation are connected the nut at screw rod both ends, just the both ends of screw rod run through respectively go up casing and lower casing.

Furthermore, the side surface of the upper shell is provided with an installation opening for installing a nut, and an installation opening for installing the nut is formed between the bottom surface of the support platform of the lower shell and the end surface of the base as well as the side surface of the support column.

Further, the spacing post is the cylindric structure that has the ladder.

The utility model discloses following beneficial effect has: the utility model provides a vibration isolator with limiting function, its simple structure uses reliably stably, carries out circumference spacing through upper housing and lower casing, carries out axial spacing through spacing post to form three-dimensional limit structure, realizes three-dimensional limit function, can effectively avoid the vibration isolation heavy object to produce great displacement, improves big load, shock resistance, can also play the effect of protection steel spring simultaneously, prolongs the life of vibration isolator, through the powerful support rigidity of steel spring subassembly, provides bigger bearing capacity in limited space; through the height adjusting gasket, the axial limiting height is adjusted according to the actual bearing difference, and the accuracy of the axial limiting gap of the vibration isolator is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the split structure of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a schematic view of the upper housing structure of the present invention;

FIG. 5 is a schematic view of the structure of the middle and lower shells of the present invention;

FIG. 6 is a schematic view of the structure of the middle position-limiting post of the present invention;

the reference numerals shown in fig. 1 to 6 are respectively expressed as: 1-upper shell, 2-lower shell, 3-steel spring component, 4-limiting column, 5-central column, 6-height adjusting gasket, 20-base, 21-supporting table, 22-supporting column, 23-limiting hole, 40-threaded hole, 50-threaded section, 10-boss, 11-groove, 12-mounting hole, 13-embedding table, 14-prepressing component, 140-screw rod, 141-nut and 142-mounting port.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 6, the vibration isolator with a limiting function comprises an upper shell 1, a lower shell 2 located below the upper shell 1 and connected with the upper shell 1 in a matching manner, a steel spring assembly 3 located between the upper shell 1 and the lower shell 2, and a height adjusting mechanism arranged between the upper shell 1 and the lower shell 2, wherein the steel spring assembly 3 is located at the periphery of the height adjusting mechanism. Preferably, the steel spring assemblies 3 are four groups and arranged between the upper shell 1 and the lower shell 2 in a 2X2 manner, and the steel spring assemblies 3 provide supporting rigidity; carry out circumference spacing through last casing 1 and lower casing 2, carry out the axial through spacing post 4 spacing to realize the spacing function of three-dimensional of isolator, effectively avoid the vibration isolation heavy object to produce great displacement under the condition of unexpected impact, it is spacing so that guarantee the accuracy under the different situation still accurately to adjust the spacing height of axial through high adjustment mechanism according to the load change simultaneously.

The height adjusting mechanism comprises a limiting column 4 arranged inside the lower shell 2, a central column 5 arranged on the bottom end face of the upper shell 1 and connected with the limiting column 4 in a matched mode, and a height adjusting gasket 6 arranged on the upper end face of the limiting column 4 and connected with the central column 5 in a matched mode. The axial limiting function is provided by the limiting column 4, preferably the limiting column 4 is a cylindrical structure with steps, the cylindrical structure with steps is combined by two cylinders with different diameters, the part with the larger diameter can provide an upward stopping function, and the part with the smaller diameter can provide a downward stopping function. Spacing post 4 and height adjusting pad 6 are arranged in the cylindrical space of casing 2 down through casing 2 from bottom to top installation down, and the installation of being convenient for is down to the less part of spacing post 4 diameter, fastens through screw thread and last casing 1 at last, and this kind of connected mode makes spacing post 4 not only possess its installation of higher strength and dismantlement process also very convenient. A threaded hole 40 communicated with the limiting hole 23 is formed in the limiting column 4, a threaded section 50 matched with the threaded hole 40 is arranged at the lower end of the central column 5, the threaded section 50 penetrates through the height adjusting gasket 6 and the limiting hole 23 respectively and is connected with the threaded hole 40 in the limiting column 4 in a matched mode, and the limiting hole 23 is of a stepped structure.

In order to improve casing 2's structural reliability and performance down, the utility model discloses in, casing 2 includes base 20, brace table 21 and sets up the support column 22 between base 20 and brace table 21 down, and spacing post 4 is located support column 22, sets up the spacing hole 23 that is linked together with spacing post 4 on the brace table 21, and center post 5 runs through spacing hole 23 and is connected with height adjusting pad 6 and spacing post 4 cooperation respectively.

In order to improve the stability ability of cooperation connection between casing 1 and the lower casing 2, the utility model discloses in, go up casing 1 lower extreme and be provided with boss 10, be provided with on the brace table 21 of lower casing 2 with boss 10 matched with recess 11, and boss 10 and recess 11 clearance fit. Go up and be provided with pre-compaction subassembly 14 between casing 1 and the lower casing 2, and the upper end of pre-compaction subassembly 14 sets up inside last casing 1, and the bottom of pre-compaction subassembly 14 runs through casing 2 down. The pre-pressing assembly 14 includes a screw 140 and nuts 141 coupled to two ends of the screw 140, and two ends of the screw 140 respectively penetrate through the upper casing 1 and the lower casing 2. Make the cooperation between last casing 1 and the casing 2 down more reliable through the cooperation of recess 11 and boss 10, improve the spacing reliability of circumference, through the effectual pre-compaction function of having realized between last casing 1 and the casing 2 down of pre-compaction subassembly 14, improve the stability of last casing 1 and casing 2 installation down.

In order to improve the reliability performance of 3 installations of steel spring assembly, the utility model discloses in, set up mounting hole 12 in the boss 10 of last casing 1, be provided with in the recess 11 of 2 brace tables of casing 21 down and inlay solid platform 13 corresponding with mounting hole 12, steel spring assembly 3 sets up between inlaying solid platform 13 and mounting hole 12, and mounting hole 12 is located the periphery of center post 5.

In order to facilitate the installation of pre-compaction subassembly 14, the utility model discloses in, the installing port 142 that is used for nut 141 to install is offered to last casing 1 side, and is formed with the installing port 142 that supplies nut 141 to install between the side of the support table 21 bottom surface of casing 2 and the terminal surface of base 20 and support column 22 down.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The vibration isolator with the limiting function is characterized by comprising an upper shell (1), a lower shell (2) which is positioned below the upper shell (1) and is in fit connection with the upper shell (1), a steel spring assembly (3) positioned between the upper shell (1) and the lower shell (2) and a height adjusting mechanism arranged between the upper shell (1) and the lower shell (2), wherein the steel spring assembly (3) is positioned at the periphery of the height adjusting mechanism;

the height adjusting mechanism comprises a limiting column (4) arranged in the lower shell (2), a central column (5) arranged on the bottom end face of the upper shell (1) and connected with the limiting column (4) in a matched mode, and a height adjusting gasket (6) arranged on the upper end face of the limiting column (4) and connected with the central column (5) in a matched mode.

2. The vibration isolator with the limiting function according to claim 1, wherein the lower shell (2) comprises a base (20), a supporting platform (21) and a supporting column (22) arranged between the base (20) and the supporting platform (21), the limiting column (4) is located in the supporting column (22), a limiting hole (23) communicated with the limiting column (4) is formed in the supporting platform (21), and the central column (5) penetrates through the limiting hole (23) and is respectively connected with the height adjusting gasket (6) and the limiting column (4) in a matched manner.

3. The vibration isolator with the limiting function according to claim 2, wherein a threaded hole (40) communicated with the limiting hole (23) is formed in the limiting column (4), a threaded section (50) matched with the threaded hole (40) is formed in the lower end of the central column (5), and the threaded section (50) penetrates through the limiting hole (23) and the height adjusting gasket (6) respectively and is connected with the threaded hole (40) in the limiting column (4) in a matched mode.

4. The vibration isolator with limiting function according to claim 2, characterized in that a boss (10) is arranged at the lower end of the upper shell (1), a groove (11) matched with the boss (10) is arranged on the support platform (21) of the lower shell (2), and the boss (10) is in clearance fit with the groove (11).

5. The vibration isolator with limiting function according to claim 4, characterized in that a mounting hole (12) is formed in the boss (10) of the upper housing (1), an embedding platform (13) corresponding to the mounting hole (12) is formed in the groove (11) of the supporting platform (21), the steel spring assembly (3) is arranged between the embedding platform (13) and the mounting hole (12), and the mounting hole (12) is located at the periphery of the central column (5).

6. The vibration isolator with limiting function according to claim 1, characterized in that a pre-pressing component (14) is arranged between the upper shell (1) and the lower shell (2), the upper end of the pre-pressing component (14) is arranged inside the upper shell (1), and the bottom end of the pre-pressing component (14) penetrates through the lower shell (2).

7. The vibration isolator with limiting function according to claim 6, characterized in that the pre-pressing assembly (14) comprises a screw rod (140) and nuts (141) which are connected to two ends of the screw rod (140) in a matching way, and two ends of the screw rod (140) respectively penetrate through the upper shell (1) and the lower shell (2).

8. The vibration isolator with the limiting function according to claim 7, wherein a mounting opening (142) for mounting a nut (141) is formed in the side surface of the upper shell (1), and a mounting opening (142) for mounting the nut (141) is formed between the bottom surface of the support platform (21) of the lower shell (2) and the end surface of the base (20) and the side surface of the support column (22).

9. The vibration isolator with limiting function according to any one of claims 1 to 8, characterized in that the limiting column (4) is a cylindrical structure with steps.