CN116241594A - Tunable composite inertial damping shock absorber and preparation method thereof - Google Patents
Tunable composite inertial damping shock absorber and preparation method thereof Download PDFInfo
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- CN116241594A CN116241594A CN202310053637.6A CN202310053637A CN116241594A CN 116241594 A CN116241594 A CN 116241594A CN 202310053637 A CN202310053637 A CN 202310053637A CN 116241594 A CN116241594 A CN 116241594A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
Abstract
The invention discloses a tunable composite inertial damping shock absorber and a preparation method thereof, which are characterized in that an inertial element and a viscous damping element are ingeniously combined into a whole to form an inertial damping shock absorber with independent structure, the device comprises two groups of ball screw pairs and a double-piston damping hydraulic cylinder, and springs are arranged in the hydraulic cylinder, so that the invention integrates energy absorption, energy consumption and tuning functions and the efficiency is obviously improved.
Description
Technical Field
The invention relates to a shock absorption (vibration resistance) device in the aspect of buildings and bridges, belongs to the technical field of shock absorption (vibration resistance) in the aspect of buildings and bridges, and particularly relates to a tunable composite inertial damping shock absorber and a preparation method thereof.
Background
The inertial mass damping theory is established for only more than ten years so far, and the inertial mass technology is an emerging technology in the field of building vibration damping. The inertial element has the apparent mass amplifying function, and can remarkably improve the energy transfer efficiency in vibration motion.
The ball screw inertial damping device is a typical form of inertial damping device, and the main structure of the ball screw inertial damping device comprises: ball screw pairs, mass elements, bearings, etc. Since the inertial mass is believed to act primarily as an energy sink and transfer, ball screw inertial mass is generally required to cooperate with energy dissipating elements (e.g., dampers), tuning elements (springs). The existing ball screw type inertial damping device cannot form a complete energy absorption and energy consumption process, only one group of ball screw pairs exist, and there is room for improvement in energy absorption and transmission.
Disclosure of Invention
The invention aims to provide a tunable composite inertial damping shock absorber with integrated energy absorption, energy consumption and tuning functions and remarkably improved efficiency.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the adjustable composite inertial damping shock absorber is characterized by comprising an outer cylinder mass element, wherein an inner cylinder damping element is sleeved in the outer cylinder mass element; the two ends of the outer cylinder quality element are respectively provided with a group of ball screw mechanisms, each group of ball screw mechanisms comprises a ball screw and a ball nut, each ball screw comprises a piston rod section at the front end and a screw section at the rear end, the screw sections of the ball screws penetrate through end covers, and the end covers are connected with the end parts of the outer cylinder quality element; the two groups of ball screw mechanisms are identical in structure and symmetrically arranged, and the two groups of ball screws respectively form an inertial volume mechanism with the corresponding end cover and outer barrel mass element;
the piston rod section of the ball screw extends into the inner cylinder damping element and is connected with a group of pistons in the inner cylinder damping element, the inner cylinder damping element is divided into three chambers by two pistons corresponding to the two groups of ball screw mechanisms, at least one oil hole is formed in each piston, the oil holes in the two pistons are communicated with the chambers on two sides of the piston where the two pistons are located, tuning springs are arranged between the two pistons, and viscous damping liquid is injected into the three chambers.
Preferably, the screw section at the rear end of the ball screw is connected with an end anchor, and the piston rod section at the front end of the ball screw extends into the inner cylinder damping element through the end cover with the ball nut to be connected with the piston.
Preferably, the end caps are connected to both ends of the outer cylinder mass element by threads.
Preferably, a conical transition section is provided between the screw section and the piston rod section.
Preferably, the length of the screw rod section is greater than the length of the piston rod section, and the outer diameter of the piston rod section is smaller than the inner diameter of the screw rod section, so that the piston rod section can pass through the ball nut when being installed.
Preferably, the screw rod section and the piston rod section are of an integral structure.
Preferably, at least one inter-cartridge bearing is provided between the outer cartridge mass element and the inner cartridge damping element.
Preferably, a tuning element is arranged in a second chamber between the first piston and the second piston, and the tuning element adopts a spring.
The invention also provides a preparation method of the tunable composite inertial damping shock absorber, which comprises the following steps:
s1: selecting materials: the outer cylinder mass element and the inner cylinder damping element are made of alloy steel with mechanical properties not lower than 40Cr or stainless steel with mechanical properties not lower than 14Cr17Ni 2;
s2: determination of main technical parameters:
s21: setting an applicable earthquake fortification grade and a corresponding earthquake acceleration value;
s22: inertial force of the inertial unit, damping force of the ball screw pair and damping force of the viscous damper should follow:
the inertia force of the inertia-capacitance unit is smaller than or equal to the rated load of the ball screw pair and smaller than or equal to the maximum damping force of the viscous damper
S221: determining the specification and the size of the outer cylinder mass element according to an inertial force formula of the inertial unit;
F in is the inertial force of the inertial container, L d For screw lead, m f R is the actual mass o Is the outer diameter of flywheel, r i Is the inner diameter of flywheel u 1 、u 2 Acceleration at two ends;
s222: determining the specification of an inner cylinder damping element according to the rated load of the ball screw pair and the specification and the size of the outer cylinder quality element;
s23: the effective stroke of the screw rod of the inertial unit and the piston of the damping unit are kept consistent;
s3: processing and assembling: the processing and assembling are carried out according to the following sequence:
s31: processing an outer cylinder mass unit: selecting a steel pipe and an end cover which meet the requirements as blanks; internal threads are machined at two ends of the steel pipe, a round hole is machined in the axis of the end cover, external threads are machined on the outline of the end cover, and the internal threads of the steel pipe are matched with the external threads of the end cover;
s32: machining a ball screw pair screw: the screw rod of the ball screw pair is divided into a screw rod section and a piston rod section, the length of the screw rod section is larger than that of the piston rod section, and the outer diameter of the piston rod section is smaller than the inner diameter of the screw rod section, so that the piston rod section can pass through the ball nut during installation;
s33: mounting of the bearing between the cylinders: firstly, heating the inter-cylinder bearing, installing the inter-cylinder bearing on the outer wall of the inner cylinder damping element, and fastening the inter-cylinder bearing on the outer wall of the inner cylinder damping element after cooling;
s34: installing a ball screw nut in the end cap hole;
s35: sleeving an end cover provided with a ball nut from one end of a piston rod section and sleeving the end cover on a screw rod section of a ball screw;
s36: connecting a piston rod section of the ball screw to a piston of the inner barrel damping element;
s37: mounting the tuning element spring into the cylinder of the inner cylinder damping element;
s38: the piston rod sections of the two ball screws connected with the piston are respectively installed into the inner cylinder damping element cylinder body from the two ends of the inner cylinder damping element cylinder body, and are fastened after being sealed, and silicone oil is filled;
s39: sleeving the outer cylinder mass element outside the inner cylinder damping element, and fixing the outer ring of the bearing between the cylinders with the outer cylinder mass element after positioning;
s310: and (5) screwing and fastening the end covers to the two ends of the outer barrel mass element to finish machining and installation. Compared with the prior art, the invention has the following beneficial effects:
1. the invention not only comprises the inertial volume unit, but also comprises the damping unit and the tuning unit, thereby forming the inertial volume damping shock absorption device with independent structure.
2. The double-inertia capacity mechanism formed by the two ball screw structures can absorb and transfer more energy, and the inertia capacity effect is larger.
3. The double damping mechanism composed of the double pistons and the three chambers can consume more energy.
The invention forms a structure independent inertial damping device by skillfully combining the inertial element and the viscous damping element, and the device comprises two groups of ball screw pairs and a double-piston damping hydraulic cylinder, and a tuning element-spring is arranged in the hydraulic cylinder. The tunable composite inertial damping shock absorber with integrated energy absorption, energy consumption and tuning functions and remarkably improved efficiency is formed.
Drawings
FIG. 1 is a schematic diagram of a tunable composite inertial damping shock absorber according to the present invention;
fig. 2 is a schematic structural diagram of an integrated screw rod in a tunable composite inertial damping shock absorber according to the present invention.
The numbers in the figure are as follows:
1. a ball screw I; 2. a ball screw II; 3. an outer barrel mass element; 4. an inner barrel damping element; 5. a tuning element; 6. an end anchor; 7. an inter-cartridge bearing; 8. a first piston; 9. a second piston; 10. a first chamber; 11. a second chamber; 12. a third chamber; 13. an oil hole; 14. a screw section; 15. a piston rod section; 16. a tapered transition section; 17. an end cap.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
As shown in fig. 1 and 2, the invention provides a tunable composite inertial damping shock absorber, which comprises an outer cylinder mass element 3, wherein an inner cylinder damping element 4 is sleeved in the outer cylinder mass element 3; end covers 17 are arranged at two ends of the outer barrel mass element 3, and ball nuts are embedded in the end covers 17; the two ends of the outer cylinder mass element 3 are respectively connected with a first ball screw 1 and a second ball screw 2, the first ball screw 1 and the second ball screw 2 are symmetrically arranged and are positioned on the same axis of the outer cylinder mass element 3 and the inner cylinder damping element 4, the first ball screw 1 and the second ball screw 2 have the same structure, but the first ball screw 1 and the second ball screw 2 are symmetrically arranged, so that the screw directions of screw sections on the first ball screw 1 and the second ball screw 2 are opposite; one end of the screw section of the ball screw 1 is connected with an end anchor 6 with a hole, and after the other end of the screw section of the ball screw 1 passes through an end cover 17 with a ball nut, a piston rod section of the ball screw 1 extends into the inner cylinder damping element 4 to be connected with the piston 8; one end of the screw section of the ball screw II 2 is connected with another end anchor 6 with a hole, and the other end of the screw section of the ball screw II 2 penetrates through the end cover with another ball nut to extend into the inner cylinder damping element 4 to be connected with the piston II 9. The ball screw 1 and the ball screw 2 are connected with the two ends of the inner cylinder damping element 4 in a dynamic sealing way.
The first piston 8 and the second piston 9 divide the inner cylinder damping element 4 into three chambers, namely a first chamber 10 formed between the first piston 8 and the inner cylinder damping element 4, a second chamber 11 formed between the first piston 8 and the second piston 9, and a third chamber 12 formed between the second piston 9 and the inner cylinder damping element 4. At least one oil hole 12 is arranged on each of the first piston 8 and the second piston 9, the oil holes on the two pistons are communicated with the chambers on the two sides of the piston where the oil holes are positioned, a tuning spring is arranged between the two pistons, and viscous damping fluid is injected into the chamber between the two pistons.
Further, the end caps 17 provided by the invention are connected with the two ends of the outer barrel mass element 3 through threads.
Further, the ball screw provided by the invention comprises a screw rod section 14 and a piston rod section 15, wherein a conical transition section 16 is arranged between the screw rod section 14 and the piston rod section 15.
Further, the length of the screw rod section 14 is larger than that of the piston rod section 15, the outer diameter of the piston rod section 15 is smaller than the inner diameter of the screw rod section 14, and the piston rod section 15 can pass through the ball nut when being installed conveniently.
Further, the piston rod section 15 of the screw rod section 14 provided by the invention adopts an integral structure.
Further, at least one inter-cylinder bearing 7 is arranged between the outer cylinder mass element 3 and the inner cylinder damping element 4, and the number of the inter-cylinder bearings 7 is 1-5. The inter-cylinder bearings 7 are uniformly arranged on the outer wall of the inner cylinder mass element 4.
Further, a tuning element 5 is arranged in a second chamber 11 between the first piston 8 and the second piston 9, and the tuning element 5 adopts a spring.
The invention also provides a preparation method of the tunable composite inertial damping shock absorber, which comprises the following steps:
s1: selecting materials: the outer cylinder mass element 3 and the inner cylinder damping element 4 are made of alloy steel with mechanical properties not lower than 40Cr or stainless steel with mechanical properties not lower than 14Cr17Ni 2;
s2: determination of main technical parameters:
s21: setting the applicable earthquake fortification grade and the corresponding earthquake acceleration value.
S22: inertial force of the inertial unit, damping force of the ball screw pair and damping force of the viscous damper should follow:
the inertia force of the inertia-capacitance unit is smaller than or equal to the rated load of the ball screw pair and smaller than or equal to the maximum damping force of the viscous damper
S221: determining the specification and the size of the outer cylinder mass element 3 according to an inertial force formula of the inertial unit;
F in is the inertial force of the inertial container, L d For screw lead, m f R is the actual mass 2 Is the outer diameter of flywheel, r i Is the inner diameter of flywheel u 1 、u 2 Acceleration at two ends;
s222: determining the specification of an inner cylinder damping element 4 according to the rated load of the ball screw pair and the specification and the size of the outer cylinder quality element 3;
s23: the effective strokes of the screw rod of the inertial unit and the piston of the damping unit are kept consistent.
S3: and (5) processing and assembling. The processing and assembling are carried out according to the following sequence:
s31: processing an outer cylinder mass unit 3: and selecting a steel pipe and an end cover which meet the requirements as blanks. Internal threads are machined at two ends of the steel pipe, a round hole is machined in the axis of the end cover, external threads are machined on the outline of the end cover, and the internal threads of the steel pipe are matched with the external threads of the end cover;
s32: and (5) machining a ball screw pair screw. The screw rod of the ball screw pair is divided into a screw rod section and a piston rod section, the length of the screw rod section 14 is larger than that of the piston rod section 15, and the outer diameter of the piston rod section 15 is smaller than the inner diameter of the screw rod section 14, so that the piston rod section can pass through the ball nut during installation;
s33: and (3) mounting the inter-cylinder bearing 7. The inter-cylinder bearing 7 is heated and arranged on the outer wall of the inner cylinder damping element 4, and the inter-cylinder bearing 7 is fastened on the outer wall of the inner cylinder damping element 4 after cooling.
S34: installing a ball screw nut in the end cap hole;
s35: the end cover 17 provided with the ball nut is sleeved from one end of the piston rod section 15 and sleeved on the screw rod section 14 of the ball screw;
s36: connecting a piston rod section 15 of the ball screw to the piston of the inner cylinder damping element 4;
s37: spring-mounting the tuning element 5 into the cylinder of the inner cylinder damping element 4;
s38: the piston rod sections 15 of the two ball screws connected with the piston are respectively installed into the cylinder body of the inner cylinder damping element 4 from the two ends of the cylinder body of the inner cylinder damping element 4, and are fastened after being sealed, and silicone oil is filled;
s39: sleeving the outer cylinder mass element 3 outside the inner cylinder damping element 4, and fixing the outer ring of the inter-cylinder bearing 7 with the outer cylinder mass element after positioning;
s310: the end caps are screwed and fastened to the two ends of the outer cylinder mass element 3, and the machining and the installation are completed.
The following is described in connection with specific embodiments:
taking a 30-ton tunable composite inertial damping shock absorber as an example, the implementation process and the implementation effect of the patent are described.
The first step, selecting the materials of the outer cylinder mass element and the inner cylinder damping element as 40Cr alloy steel.
Second step, determination of main technical parameters
1. Setting the applicable earthquake fortification grade as 9 grades, and setting the corresponding earthquake acceleration value as 0.4g and the amplitude as +/-50 mm.
2. Determining parameters of outer cylinder mass element and inner cylinder damping element
(1) The ball screw dynamic rated load was selected to be 30 tons. The viscous damper has a damping force of 30 tons. The inertial force of a single inertial element is 30 tons.
(2) And verifying the lead of the ball screw pair, the outer diameter of the outer cylinder mass element, the wall thickness and the inner diameter of the outer cylinder mass unit (the outer diameter of the ball nut) according to the set inertial force, the inertial force calculation formula of the inertial unit and the set acceleration value of 0.4 g.
The technical parameters after verification are as follows:
the lead of the ball screw pair is 15mm, the outer diameter of the outer cylinder mass element is 240mm, the wall thickness is 5mm, the inner diameter of the outer cylinder mass unit (the outer diameter of the ball nut) is 90mm, and the length of the outer cylinder mass element is 800mm. The outer diameter of the inner cylinder damping element is 180mm, the wall thickness is 10mm, and the length is 400mm. Length L of screw section of ball screw pair 10 280mm, screw section diameter 50mm, piston section length L 20 150mm and a piston rod segment diameter of 35mm. The effective stroke of the screw section and the piston section is 100mm.
And thirdly, processing and assembling. The processing and assembling are carried out according to the following sequence:
1. and (5) processing the outer barrel mass unit. A40 Cr alloy steel pipe having an outer diameter of 250mm, a wall thickness of 10mm and a length of 800mm was prepared as an outer cylinder blank. 40Cr round steel having an outer diameter of 240mm and a thickness of 60mm was prepared as an end cap blank. Internal threads are processed on the inner walls of the two ends of the outer cylinder blank. An inner through hole with the diameter of 90mm is processed in the center of the end cover blank, and then an external thread matched with the internal thread of the outer cylinder is processed on the end cover.
2. And (5) machining a ball screw pair screw. A ball screw nut having an outer diameter of 90mm was prepared. The screw rod blank is processed into a screw rod section with the length of 280mm and the diameter of 50mm, and a piston rod section with the length of 150mm and the diameter of 35mm, wherein a conical transition section is arranged between the screw rod section and the piston rod section. The screw rod section, the conical transition section and the piston rod section are integrated.
3. A cylinder body and a piston of an inner cylinder damping element are prepared. The outer diameter of the cylinder body of the inner cylinder damping element is 180mm, the wall thickness is 10mm, and the length is 400mm. The specification of the piston is matched with that of the cylinder.
4. And (5) mounting a bearing between the cylinders. Heating the bearing, installing the bearing on the outer wall of the inner cylinder damping element, and fastening the bearing on the outer wall of the inner cylinder damping element after cooling.
5. The tuning element is connected with the piston, and the piston and the tuning element are mounted in the cylinder of the damping element.
6. A ball screw nut is mounted in the end cap bore.
7. And sleeving the end cover provided with the ball nut from one end of the piston rod section and sleeving the end cover on the screw rod section of the ball screw.
8. The piston rod sections of the two ball screws connected with the piston are respectively installed into the inner cylinder damping element cylinder body from the two ends of the inner cylinder damping element cylinder body, and are fastened after being sealed, and silicone oil is filled.
9. And sleeving the cylinder body of the outer cylinder mass element outside the inner cylinder damping element, and fixing the bearing outer ring and the outer cylinder mass element after positioning.
10. The end caps are screwed and fixed to the two ends of the outer barrel mass element.
Through the above processes, the processing and installation of the tunable composite inertial damping shock absorber are completed.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The adjustable composite inertial damping shock absorber is characterized by comprising an outer cylinder mass element (3), wherein an inner cylinder damping element (4) is sleeved in the outer cylinder mass element (3); the two ends of the outer cylinder quality element (3) are respectively provided with a group of ball screw mechanisms, each group of ball screw mechanisms comprises a ball screw and a ball nut, the ball screw comprises a piston rod section (15) at the front end and a screw rod section (14) at the rear end, the screw rod section (14) of the ball screw penetrates through an end cover (17), and the end cover (17) is connected with the end part of the outer cylinder quality element (3); the two groups of ball screw mechanisms are identical in structure and are symmetrically arranged, and the two groups of ball screws respectively form an inertial volume mechanism with the corresponding end cover and the corresponding outer barrel mass element (3);
the piston rod section (15) of the ball screw extends into the inner cylinder damping element (4) and is connected with one group of pistons in the inner cylinder damping element (4), the inner cylinder damping element (4) is divided into three chambers by two groups of pistons corresponding to the two groups of ball screw mechanisms, at least one oil hole (12) is formed in each piston, the oil holes (12) in the two pistons are communicated with the chambers on two sides of the piston where the two pistons are located, tuning springs are arranged between the two pistons, and viscous damping liquid is injected into the three chambers.
2. A tuneable compound inertial damping shock absorber according to claim 1, characterised in that the screw section (14) at the rear end of the ball screw is connected to an end anchor (6) and the piston rod section (15) at the front end of the ball screw extends through an end cap (17) with a ball nut into the inner barrel damping element (4) to connect with the piston.
3. A tuneable compound inertial damping shock absorber according to claim 2, characterised in that the end caps (17) are connected to both ends of the outer barrel mass (3) by threads.
4. A tuneable compound inertial damping shock absorber according to claim 2, characterised in that a conical transition section (16) is provided between the screw section (14) and the piston rod section (15).
5. A tuneable compound inertial damping shock absorber according to claim 4, wherein the length of the screw section (14) is greater than the length of the piston rod section (15), the outer diameter of the piston rod section (15) being smaller than the inner diameter of the screw section (14), the piston rod section (15) being accessible to a ball nut when installed.
6. A tuneable compound inertial damping shock absorber according to claim 4, characterised in that the screw section (14) and the piston rod section (15) are of unitary construction.
7. A tuneable compound inertial damping shock absorber according to claim 1, characterised in that at least one inter-cylinder bearing (7) is provided between the outer cylinder mass element (3) and the inner cylinder damping element (4).
8. A tuneable compound inertial damping shock absorber according to claim 1, characterised in that a tuning element (5) is arranged in a chamber two (11) between the piston one (8) and the piston two (9), the tuning element (5) being a spring.
9. A preparation method of a tunable composite inertial damping shock absorber is characterized by comprising the following steps:
s1: selecting materials: the outer cylinder mass element (3) and the inner cylinder damping element (4) are made of alloy steel with mechanical properties not lower than 40Cr or stainless steel with mechanical properties not lower than 14Cr17Ni 2;
s2: determination of main technical parameters:
s21: setting an applicable earthquake fortification grade and a corresponding earthquake acceleration value;
s22: inertial force of the inertial unit, damping force of the ball screw pair and damping force of the viscous damper should follow:
the inertia force of the inertia-capacitance unit is smaller than or equal to the rated load of the ball screw pair and smaller than or equal to the maximum damping force of the viscous damper
S221: determining the specification and the size of an outer cylinder mass element (3) according to an inertial force formula of an inertial unit;
F in is the inertial force of the inertial container, L d For screw lead, m f R is the actual mass o Is the outer diameter of flywheel, r i Is the inner diameter of flywheel u 1 、u 2 Acceleration at two ends;
s222: determining the specification of an inner cylinder damping element (4) according to the rated load of the ball screw pair and the specification and the size of the outer cylinder quality element (3);
s23: the effective stroke of the screw rod of the inertial unit and the piston of the damping unit are kept consistent;
s3: processing and assembling: the processing and assembling are carried out according to the following sequence:
s31: processing an outer cylinder mass unit (3): selecting a steel pipe and an end cover which meet the requirements as blanks; internal threads are machined at two ends of the steel pipe, a round hole is machined in the axis of the end cover, external threads are machined on the outline of the end cover, and the internal threads of the steel pipe are matched with the external threads of the end cover;
s32: machining a ball screw pair screw: the screw rod of the ball screw pair is divided into a screw rod section and a piston rod section, the length of the screw rod section (14) is larger than that of the piston rod section (15), and the outer diameter of the piston rod section (15) is smaller than the inner diameter of the screw rod section (14), so that the piston rod section can pass through the ball nut during installation;
s33: mounting of the inter-cylinder bearing (7): firstly, heating an inter-cylinder bearing (7), installing the inter-cylinder bearing on the outer wall of an inner cylinder damping element (4), and fastening the inter-cylinder bearing (7) on the outer wall of the inner cylinder damping element (4) after cooling;
s34: installing a ball screw nut in the end cap hole;
s35: an end cover (17) provided with a ball nut is sleeved from one end of a piston rod section (15) and sleeved on a screw rod section (14) of the ball screw;
s36: connecting a piston rod section (15) of the ball screw to a piston of the inner cylinder damping element (4);
s37: spring-mounting the tuning element (5) into the cylinder of the inner cylinder damping element (4);
s38: the piston rod sections (15) of the two ball screws connected with the piston are respectively arranged in the cylinder body of the inner cylinder damping element (4) from the two ends of the cylinder body of the inner cylinder damping element (4), and are fastened after being sealed, and silicone oil is added;
s39: sleeving the outer cylinder mass element (3) outside the inner cylinder damping element (4), and fixing the outer ring of the inter-cylinder bearing (7) with the outer cylinder mass element after positioning;
s310: and (5) screwing and fastening the end caps to the two ends of the outer barrel mass element (3) to finish machining and installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310053637.6A CN116241594A (en) | 2023-02-03 | 2023-02-03 | Tunable composite inertial damping shock absorber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310053637.6A CN116241594A (en) | 2023-02-03 | 2023-02-03 | Tunable composite inertial damping shock absorber and preparation method thereof |
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| CN202310053637.6A Pending CN116241594A (en) | 2023-02-03 | 2023-02-03 | Tunable composite inertial damping shock absorber and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344884A (en) * | 2023-12-04 | 2024-01-05 | 北京市建筑设计研究院有限公司 | Integrated parallel energy dissipation and shock absorption device suitable for building structure |
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2023
- 2023-02-03 CN CN202310053637.6A patent/CN116241594A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344884A (en) * | 2023-12-04 | 2024-01-05 | 北京市建筑设计研究院有限公司 | Integrated parallel energy dissipation and shock absorption device suitable for building structure |
| CN117344884B (en) * | 2023-12-04 | 2024-02-13 | 北京市建筑设计研究院有限公司 | Integrated parallel energy dissipation and shock absorption device suitable for building structure |
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