CN204164248U - A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM - Google Patents
A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM Download PDFInfo
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- CN204164248U CN204164248U CN201420565230.8U CN201420565230U CN204164248U CN 204164248 U CN204164248 U CN 204164248U CN 201420565230 U CN201420565230 U CN 201420565230U CN 204164248 U CN204164248 U CN 204164248U
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Abstract
The utility model discloses a kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM, comprise base and be arranged on the casing on base, piston is provided with in casing, described piston is connected to casing top by spring, the cavity on top and the oil pocket of bottom is divided into by piston in described casing, cavity is provided with vent 20, oil pocket is full of hydraulic oil; Oil pocket one end connects the second hydraulic oil container by oil inlet pipe, and oil inlet pipe is provided with oil hydraulic pump; The oil pocket the other end connects the 3rd hydraulic oil container by oil outlet tube, and oil outlet tube is provided with control valve.The utility model is arranged on the body of big-and-middle-sized press bed, in there is vibration under the impact of body at power source, the volume of the hydraulic oil in casing is changed by primer fluid pressure control system, the natural frequency of final change bump leveller makes its value identical with the vibration frequency of body, to adapt to the situation that body vibrates at different frequencies, thus reach the effect of vibration damping, improve machining accuracy.
Description
Technical field
The utility model belongs to the vibration damping field controlling big-and-middle-sized press bed body, is specifically related to a kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM.
Background technique
Along with the development of science and technology, production and the living standard of people are more and more higher, and in processing field, mechanical structure is widely used.As large-scale press bed, it meets the requirement of people to some manufacturing machine component, running due to the power source of large-scale press bed can cause the vibration of whole body, although be all alleviate mechanical vibration by the isolation of control power source and mechanical structure traditionally.But the mode due to this isolation damper cannot realize adding that the running of each part of big machinery internal body all can carry out the vibration with body completely and outward completely, on the contrary because the vibration of body can cause the vibration of each running gear of internal body thus cause the machining accuracy of overall machinery.The emphasis of the large quantity research of people is alleviating the vibration of mechanical operating part for a long time, and have ignored the impact of body vibration.
Summary of the invention
For the problem proposed in above-mentioned prior art, the purpose of this utility model is, provides a kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM, alleviates the vibration of big machinery body to the impact of its inside one parts, thus improves machining accuracy.
In order to realize above-mentioned task, the utility model adopts following technical solution:
A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM, comprise base and be arranged on the casing on base, piston is provided with in casing, described piston is connected to casing top by spring, the cavity on top and the oil pocket of bottom is divided into by piston in described casing, cavity is provided with vent, and oil pocket is full of hydraulic oil; Oil pocket one end connects the second hydraulic oil container by oil inlet pipe, and oil inlet pipe is provided with oil hydraulic pump; The oil pocket the other end connects the 3rd hydraulic oil container by oil outlet tube, and oil outlet tube is provided with control valve.
Further, described oil inlet pipe is provided with one-way valve, is ended by the direction one-way valve of oil pocket to the second hydraulic oil container.
Further, oil inlet pipe is connected to first oil cylinder by relief valve.
Further, oil hydraulic pump is provided with motor.
Further, oil purifier is provided with between oil hydraulic pump and the second hydraulic oil container.
Further, described casing is fixed on base by cushion.
Variable mass dynamic vibration absorber of the present utility model, utilizes hydraulic control system to change the quality of the hydraulic oil in casing, namely changes the mass unit of dynamic vibration absorber, thus change the natural frequency of bump leveller.This bump leveller is arranged on the body of big-and-middle-sized press bed, this bump leveller can regulate self frequency according to the change of body vibration frequency, reach the object of vibration damping, can reach effectiveness in vibration suppression at different frequencies, machining accuracy is improved greatly after group.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Number in the figure represents: 1-oil purifier, 2-motor, the 3-the first hydraulic oil container, 4-relief valve, 5-the second hydraulic oil container, 6-oil hydraulic pump, 7-tapped hole, 8-base, 9-cushion, 10-one-way valve, 11-oil pocket, 12-piston, 13-casing, 14-spring, 15-oil outlet tube, 16-control valve, the 17-the three hydraulic oil container, 18-oil inlet pipe, 19-cavity, 20-vent;
Embodiment
Defer to technique scheme, as shown in Figure 1, a kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM, the casing 13 comprising base 8 and be arranged on base 8, be provided with piston 12 in casing 13, described piston 12 is connected to casing 13 top by spring 14, is divided into the cavity 19 on top and the oil pocket 11 of bottom in described casing 13 by piston 12, cavity 19 is provided with vent 20, oil pocket 11 is full of hydraulic oil; Oil pocket 11 one end connects the second hydraulic oil container 5 by oil inlet pipe 18, oil inlet pipe 18 is provided with oil hydraulic pump 6; Oil pocket 11 the other end connects the 3rd hydraulic oil container 17 by oil outlet tube 15, oil outlet tube 15 is provided with control valve 16.
The base 8 of bump leveller is screwed onto by bolt hole 7 on the body of big-and-middle-sized press bed, so and body define coupled system.Working principle of the present utility model is, by constantly adjusting the quality of hydraulic oil in casing 13 oil pocket 11, and change the quality of bump leveller entirety, after the Mass adjust-ment of bump leveller, its natural frequency changes.According to two degrees of freedom principle, when the natural frequency of bump leveller equals the natural frequency of the main system of installing bump leveller, just damping effect is served to main system.
Because the natural frequency of main system body may change, in the utility model, have employed piston 12 formula casing 13 structure, by carrying out the control of hydraulic oil quality to the adjustment of hydraulic oil volume in casing 13.
Casing 13 is regular casing 13, and the piston 12 installed in casing 13 is parallel to casing 13 bottom surface and arranges, and is sliding type, interference fit between casing 13, moves reposefully in casing 13.Also can play good airtight effect when sliding to make piston 12, preventing the leakage of hydraulic oil, at the flexible material of piston 12 outer wrap, as rubber.
The cavity 19 be separated into by piston 12 and the volume of oil pocket 11, be adjusted by the difference of piston 12 position.When moving towards cavity 19 direction to make piston 12, cavity 19 inside and outside air pressure balance, cavity 19 is provided with vent 20, is preferably arranged on cavity 19 end face, thus pressure in oil pocket 11 is reduced, and is convenient to oil transportation in oil pocket 11.
Be arranged on the oil hydraulic pump 6 on oil inlet pipe 18, preferred employing gear-type hydraulic pump 6, by the parameter such as diameter, the number of teeth, modulus of gear pre-set, make the output flow of oil hydraulic pump 6 steady, thus make the quality smooth change of dynamic vibration absorber, close to linear, make the good damping result of bump leveller, controllability is strong.
The control valve 16 that oil outlet tube 15 is installed preferably adopts manually operated type two position two-way valve, when bump leveller does not work, the Joystick moving two position two-way valve makes its conducting, hydraulic oil in casing 13 is released, realize the recycling of hydraulic oil, also add spring 14 working life of casing 13 inner carrier 12.
With reference to such scheme of the present utility model, working procedure of the present utility model is as follows:
When bump leveller works, closed control valve 16, hydraulic oil in second hydraulic oil container 5 is pumped in the oil pocket 11 in casing 13 by oil hydraulic pump 6 by oil inlet pipe 18, now piston 12 moves upward, in casing 13, hydraulic oil volume increases, change casing 13 quality, have adjusted the natural frequency of bump leveller.
When bump leveller does not work, open control valve 16, close oil hydraulic pump 6, now under piston 12 Action of Gravity Field and the effect of spring 14 elastic force, hydraulic oil is flow in the 3rd hydraulic oil container 17 by oil outlet tube 15 from oil pocket 11.
Also the 3rd hydraulic oil container 17 can be connected with the second hydraulic oil container 5, realize hydraulic oil automatic cycle and utilize.
As further preferred, oil inlet pipe 18 is provided with one-way valve 10, one-way valve 10 adopts the unidirectional throughway valve of steel ball sealing formula, the effect of this one-way valve 10 is, ended by one-way valve 10 on the direction of oil pocket 11 to the second hydraulic oil container 5, prevent the hydraulic oil when oil hydraulic pump 6 does not work from flowing out from oil inlet pipe 18, and casing 13 quality is changed.
Oil inlet pipe 18 is also connected with the first hydraulic oil container 3, the connecting pipeline between oil inlet pipe 18 and the first hydraulic oil container 3 is provided with relief valve 4.Due to when oil hydraulic pump 6 makes oil pocket 11 internal pressure increase to pump oil in oil pocket 11, the spring 14 elastic force limit may be exceeded and cause the damage of casing 13 internal piston 12 structure, therefore oil inlet pipe 18 is connected to the first hydraulic oil container 3 by relief valve 4, when force value is excessive, carry out pressure release by relief valve 4.
Oil hydraulic pump 6 can have multiple drived control mode, in this programme, oil hydraulic pump 6 is provided with motor 2, by motor 2 hydraulic control pump 6 automatically, and easy-to-operat.
Owing to often containing particulate contamination in hydraulic oil, the wearing and tearing of hydraulic element relative motion surface, guiding valve clamping stagnation, orifice blocking can be caused, system works reliability is greatly reduced.Therefore between oil hydraulic pump 6 and the second hydraulic oil container 5, be provided with oil purifier 1, ensure that hydraulic system normally works.
Casing 13 is fixed on base 8 by cushion 9, and cushion 9 has certain elasticity and damping, and preferably adopt silicone rubber to make, base 8 is connected with casing 13 by the mode of sulfuration.
In sum, when the vibration frequency of body is when change, the bump leveller of this device better can send out the effect of absorbing, from the machining accuracy improving big-and-middle-sized press machine.
Claims (6)
1. the variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM, comprise base (8) and be arranged on the casing (13) on base (8), piston (12) is provided with in casing (13), it is characterized in that, described piston (12) is connected to casing (13) top by spring (14), the cavity (19) on top and the oil pocket (11) of bottom is divided into by piston (12) in described casing (13), cavity (19) is provided with vent (20), oil pocket (11) is full of hydraulic oil; Oil pocket (11) one end connects the second hydraulic oil container (5) by oil inlet pipe (18), oil inlet pipe (18) is provided with oil hydraulic pump (6); Oil pocket (11) the other end connects the 3rd hydraulic oil container (17) by oil outlet tube (15), oil outlet tube (15) is provided with control valve (16).
2. as claimed in claim 1 by the variable mass dynamic vibration absorber of HYDRAULIC CONTROL SYSTEM, it is characterized in that, described oil inlet pipe (18) is provided with one-way valve (10), is ended by the direction one-way valve (10) of oil pocket (11) to the second hydraulic oil container (5).
3., as claimed in claim 1 by the variable mass dynamic vibration absorber of HYDRAULIC CONTROL SYSTEM, it is characterized in that, oil inlet pipe (18) is connected to first hydraulic oil container (3) by relief valve (4).
4., as claimed in claim 1 by the variable mass dynamic vibration absorber of HYDRAULIC CONTROL SYSTEM, it is characterized in that, oil hydraulic pump (6) is provided with motor (2).
5., as claimed in claim 1 by the variable mass dynamic vibration absorber of HYDRAULIC CONTROL SYSTEM, it is characterized in that, between oil hydraulic pump (6) and the second hydraulic oil container (5), be provided with oil purifier (1).
6., as claimed in claim 1 by the variable mass dynamic vibration absorber of HYDRAULIC CONTROL SYSTEM, it is characterized in that, described casing (13) is fixed on base (8) by cushion (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565230.8U CN204164248U (en) | 2014-09-28 | 2014-09-28 | A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565230.8U CN204164248U (en) | 2014-09-28 | 2014-09-28 | A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM |
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| Publication Number | Publication Date |
|---|---|
| CN204164248U true CN204164248U (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420565230.8U Expired - Fee Related CN204164248U (en) | 2014-09-28 | 2014-09-28 | A kind of variable mass dynamic vibration absorber by HYDRAULIC CONTROL SYSTEM |
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| Country | Link |
|---|---|
| CN (1) | CN204164248U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150945A (en) * | 2016-08-15 | 2016-11-23 | 深圳前海零距物联网科技有限公司 | Saddle TRT |
| CN107023603A (en) * | 2017-04-11 | 2017-08-08 | 中国地质大学（武汉） | A kind of adaptive bump leveller |
| CN110701241A (en) * | 2019-10-31 | 2020-01-17 | 华中科技大学 | Hydraulic low-frequency vibration absorption isolator |
| CN114321263A (en) * | 2021-12-15 | 2022-04-12 | 珠海格力电器股份有限公司 | Hydraulic vibration damper, air conditioning unit and adjusting method of hydraulic vibration damper |
-
2014
- 2014-09-28 CN CN201420565230.8U patent/CN204164248U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150945A (en) * | 2016-08-15 | 2016-11-23 | 深圳前海零距物联网科技有限公司 | Saddle TRT |
| CN107023603A (en) * | 2017-04-11 | 2017-08-08 | 中国地质大学（武汉） | A kind of adaptive bump leveller |
| CN107023603B (en) * | 2017-04-11 | 2019-01-01 | 中国地质大学（武汉） | A kind of adaptive bump leveller |
| CN110701241A (en) * | 2019-10-31 | 2020-01-17 | 华中科技大学 | Hydraulic low-frequency vibration absorption isolator |
| CN114321263A (en) * | 2021-12-15 | 2022-04-12 | 珠海格力电器股份有限公司 | Hydraulic vibration damper, air conditioning unit and adjusting method of hydraulic vibration damper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20160928 |