Screw tension-compression spring for resonant mechanical vibration systems

FIELD: machine building.

SUBSTANCE: spring is twisted and can have both cylindrical and profiled shape. Attachment flanges are connected to edges of spring. A cavity excluding the contact of extreme working turns of spring with flanges is made on each flange. Extreme turns are bent and cut so that spring turns do not contact each other during spring compression with flanges at maximum load. Threaded holes are made in extreme spring turns on flat surfaces of their contact to attachment flanges. Attachment flanges are provided with holes opposite threaded holes and attached to extreme spring turns by means of screws.

EFFECT: improving manufacturability of spring design.

2 cl, 1 dwg

 

The invention relates to a vibration technique and can be used in various sectors of economic activity.

It is known the use of helical wound compression springs in the construction of electromagnetic exciters (p.12-13 in the book: III. New single-cycle electromagnetic vibration exciter. Ed. Cceinformatica and techno-economy. studies. on building., road and municipal engineering. M, 1972). Disadvantages twisted springs: high level of noise caused by collision of the end turns, and a significant dissipation of energy at the resonant oscillations, due to the microshears end portions of the springs relative to the reference planes and the impact of the end turns.

Known slotted cylindrical helical spring tension-compression, which is free of the above disadvantages and applied in a known design of electromagnetic vibration exciter (page 13 in the book: III. New single-cycle electromagnetic vibration exciter. Ed. Cceinformatica and techno-economy. studies. on building., road and municipal engineering. M, 1972).

The disadvantage of slotted cylindrical helical tension spring, compression is insufficient manufacturability of the design of the spring, which requires time-consuming operations on routing end-to-end in novogo groove in a thick-walled tubular workpiece, and also requires the use in the manufacture of springs complex fixtures for milling helical groove. These deficiencies are so significant that these slotted screw tension spring, compression has not received practical application in vibration engineering.

As a prototype of the selected coil spring tension-compression for resonance in mechanical systems (see RF patent for the invention №2380174 the author of this application). The claims at the specified patent: coil spring tension-compression for resonance in mechanical systems, the ends of which are made with the possibility of mechanical joining of the parts of the vibrating system, with spring made of twisted, its ends are welded mounting flanges, each of which is made hollow, excluding contact at the working coils of the spring with the flanges when the spring is working, with the edges bent and cut so that when the spring compression flange at maximum load coils of the spring contact, and the spring can have both cylindrical and shaped form.

The disadvantage of the prototype is the lack of manufacturability of the design of the spring with welded mounting flanges, namely, that the welding spring steel requires p is adveritising heating the parts to a high temperature. This greatly complicates the conditions of industrial production welding process connection flanges with spring.

The objective of the invention is to improve the manufacturability of the design of screw tension spring, compression for resonance in mechanical systems to acceptable engineering production.

The solution is achieved by the fact that the coil spring tension-compression for resonance in mechanical systems, the ends of which are made with the possibility of mechanical joining of the parts of the vibrating system, the spring is made of twisted, its ends attached to the mounting flanges, each of which is made hollow, excluding contact at the working coils of the spring with the flanges when the spring is working, with the edges bent and cut so that when the spring compression flange at maximum load coils of the spring contact, the spring can have both cylindrical and shaped form, while in extreme turns of the spring on the flat surfaces of their contact with the mounting flanges threaded holes through which mounting flanges having apertures opposite the threaded holes attached to the extreme coils of the spring screws, each mounting flange when the Sol is for extreme coil springs with at least two screws.

As the connecting flanges can be used details of the mechanical resonance of the vibrating system, such as reactive mass and detail of the housing of the vibration device, installed in the spring.

Application of the proposed essential features allows you to get a new effect: the proposed design of the helical tension spring, compression for resonance in mechanical systems on the basis of twisted spiral springs made on widely used technologies by way of the winding on the mandrel rod in the hot condition. In addition to this technology made simple additional process steps: holiday standard springs, cutting off part of the extreme length of its coils, drilling holes on a flat surface at turns, tapping into these holes, hardening and tempering of the spring on the spring properties. The presence of screw holes on extreme turns of the spring allows you to attach the mounting flanges with screws.

The analysis of the level of technology in mechanical engineering and vibrating equipment showed that the proposed set of essential features is new, not obvious from the prior art and thus the invention is new and has izobretatelskikh.

The invention is illustrated by the drawing, which shows the structure of a helical tension spring, compression for resonance in mechanical systems. Coil spring tension-compression for resonance in mechanical systems includes a spiral wound the spring 1, the flat surface 2 of the ends of which are threaded holes 3. Mounting flange 4 is attached to the extreme coils of the spring screws 5, which are screwed into the screw holes 3. Under the screws 5 are locking plate or washer 6. The mounting flanges have holes 8 for mechanical connection with the details of the resonance of the vibrating system. Each flange has a recess 7, excluding contact at the working coils of the spring with the flanges when the spring is working.

As the connecting flanges can be used details of the mechanical resonance of the vibrating system, such as reactive mass and detail of the vibrating device, installed in the spring.

Coil spring tension-compression for resonance in mechanical systems works as follows. To the connecting flanges 4 are attached with screws parts mechanical resonance of the vibrating system. These details vibrate along the axis of the spring 1. Wealth is giving to that mounting flanges 4 rigidly attached by screws 5 to the extreme coils of the spring 1, it performs functions such as compression springs and extension springs. This spring operates silently and with minimal loss of energy, maintains the stability of the frequency of natural oscillations. Each of the mounting flanges attached to the extreme coil springs with at least two screws. This is necessary to prevent torque mounting flange relative to the springs and ensure tight with no gaps connection connecting flanges at the turns of the spring.

In this helical spring tension-compression for resonance in mechanical systems solved the problem of the invention is achieved acceptable for engineering production manufacturability of the design. This problem is solved due to the fact that on the flat surfaces of the outermost coils of the spring threaded holes through which mounting flanges attached to the extreme coils of the spring screws that are screwed into the threaded holes. Moreover, the revision of the screw spiral spring made according to generally accepted engineering technology way hot winding, is done by performing a simple additional technological operations - the holiday of spring, additional milling is a mini-processing (cutting off part of the extreme length of the coils, drilling holes on flat surfaces at turns, tapping into these holes, hardening and tempering of the spring to receive a spring property.

As can be seen from the above that the possibility of practical implementation of the proposed invention does not cause doubts. Thus, the proposed invention is industrially applicable.

1. Coil spring tension-compression for resonance in mechanical systems, the ends of which are made with the possibility of mechanical joining of the parts of the vibrating system, the spring is made of twisted, its ends attached to the mounting flanges, each of which is made hollow, excluding contact at the working coils of the spring with the flanges when the spring is working, with the edges bent and cut so that when the spring compression flange at maximum load coils of the spring contact, the spring can have both cylindrical and shaped form, characterized in that in extreme turns of the spring on the flat surfaces of their contact with the mounting flanges threaded holes through which mounting flanges having apertures opposite the threaded holes attached to the extreme coils of the spring screws, each mounting flange attached to cu is inemo coil springs with at least two screws.

2. Coil spring tension-compression for resonance in mechanical systems according to claim 1, characterized in that the connecting flange parts used mechanical resonance of the vibrating system, such as reactive mass and detail of the housing of the vibration device, installed in the spring.



 

Same patents:

FIELD: transport.

SUBSTANCE: car variable-rigidity spring support 1 consists of main part 6 and rigid or semi-rigid insert 7. Suspension spring 1 rests directly onto rigid or semi-rigid insert 7. Said main part 6 comprises truncated-cone base 8 running from smaller diametre top side. Truncated cone elongation 9 runs coaxially from said base, elongation larger diametre being smaller than least diametre of base 8. Insert 7 comprises truncated-cone base 13 running from smaller diametre top side. Truncated cone elongation 14 runs coaxially from said base. Insert 7 has axial cavity with its inner shape and sizes corresponding to outer shape and sizes of elongation 9 of main part 6.

EFFECT: simplified design of support element.

9 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive suspensions and transport facilities incorporating such suspension. Suspension comprises spring 1, cover 3 and centering cup 7 supporting coiled spring end 2 in cover 3. Centering cup 7 has its top part provided with, in fact, round, press-fitting 11 that forms hollow part to receive cover 3. Ribs 14 are arranged along inner edges of cover 3. Shape of ribs 14 allows their arrangement on ledge 13 made inside press-fitting 11. Cover 3 and centering cup 7 comprises appliances to lock angular position of spring 1 relative to cup 7. Press-fitting depth varies continuously to make inclination over entire length interact with cover 3 and coiled spring end. The deepest part of press-fitting 11 forms locking appliances for edge 10 of cover 3. Transport facility comprises abode described suspension.

EFFECT: fixed angular position of spring in cover and on centering cup, simplified suspension assembly.

6 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly to suspensions. Proposed device comprises spring with different-diametre coils secured between the spring support plates. Inner and outer support plates 4, 3 are fitted on cylinder 6 of shock-absorbing post and radially spaced apart. When in 1st shock-absorbing position, spring 1 rests by section 1a of smaller-diametre coils d upon inner support plate 4. In 2nd shock-absorbing position (II), spring 1 rests by section 1b of larger-diametre coils D upon outer support plate 3.

EFFECT: simplified spring adjustment.

11 cl, 3 dwg

FIELD: construction, road engineering.

SUBSTANCE: invention is related to device for suspension of sound-insulation elements. Spring-loaded suspension comprises spring (6) and two fixtures (5, 7) for spring. One fixture (7) for spring is fixed on device (8) for suspension. Spring (6) is screwed onto first fixture (7). The second fixture (5) for spring is fixed on opening of sound-insulation element (3) by means of pressing disks (2, 4) and is screwed in spring (6) so that around 3 turns of spring (6) are left free. Spring (6) is made with rigidity that makes from 15000 N/m to 25000 N/m. Sound-insulation wall consists of bearing structure socle and spring-loaded suspensions. Sound-insulation elements of wall are fixed by means of spring-loaded suspension.

EFFECT: creation of frameless structure able to introduce efforts from all directions through fixing device into bearing structure.

2 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: invention relates to helical spring fastening and spring tension adjustment device. The proposed device comprises plate (P1) with two rows of holes (12, 13) spaced for a distance equal, approximately, to spring coil diametre. Holes of one row are displaced with respect to those of the other row. Plate (P1) is furnished with a gripping-locking device with a threaded rod that has a hook arranged on its one end. Aforesaid threaded rod is screwed into inner thread (15) made in plate (P1) with the plate axis parallel to that of the spring. Plate (P1) arranged between the rows of holes (12, 13) features the shape allowing aforesaid threaded rod passage. Plate (P1) comprises cylindrical wall with inner thread (15) arranged between two rows of holes (12, 13). Two flat parts (10) of plate (P1) are arranged on both sides of aforesaid cylindrical wall.

EFFECT: reliable fastening and accurate spring tension adjustment.

2 cl, 4 dwg

Combined spring // 2346194

FIELD: mechanical engineering.

SUBSTANCE: invention relates to general mechanical engineering and can be used in production of new spring-loading devices. Combined spring comprises a compression spring; round holders with diameter exceeding that of the spring and with an inner channel in the upper wall are mounted at the end turns of the compression spring. The upper wall shape is analogous to the end turn shape. The holders embrace the turn by two thirds or three fourth of the turn circle and are fixed on it by any way known. Part of the upper wall excluding the inner channel entry is fitted with lower vertical flanging which is set wider than the spring outer diameter and with its height being equal to the spring wire diameter. Prominent part of the channel is located below the upper wall. A flat stop with its height being equal to the spring washer height is rigidly fixed at the top of each holder; it is centred and set vertically. The washers are round with central symmetrical slot, the slot shape is analogous to that of the stop. The slot provides for free fitting of the washers at the stops with the possibility of being taken off, they can be fixed by a screw with tapered head. The screw is screwed into the threaded opening in the stop centre. A clearance hole with its diameter exceeding that of the screw is made coaxially to the threaded opening; the clearance hole has a tapered reaming of the screw head entry hole so that the head can be set countersunk in respect to the washer side surface. Spring-loaded parts or units of the machine which can be moved are rigidly or pivotally connected to the washer butts on the both ends. The possibility of spring-loading in two mutually inversed directions is provided.

EFFECT: possibility of spring-loading in two mutually inversed directions is provided.

2 dwg

The invention relates to suspensions of vehicle wheels with dynamically variable elasticity or stiffness

Combined spring // 2346194

FIELD: mechanical engineering.

SUBSTANCE: invention relates to general mechanical engineering and can be used in production of new spring-loading devices. Combined spring comprises a compression spring; round holders with diameter exceeding that of the spring and with an inner channel in the upper wall are mounted at the end turns of the compression spring. The upper wall shape is analogous to the end turn shape. The holders embrace the turn by two thirds or three fourth of the turn circle and are fixed on it by any way known. Part of the upper wall excluding the inner channel entry is fitted with lower vertical flanging which is set wider than the spring outer diameter and with its height being equal to the spring wire diameter. Prominent part of the channel is located below the upper wall. A flat stop with its height being equal to the spring washer height is rigidly fixed at the top of each holder; it is centred and set vertically. The washers are round with central symmetrical slot, the slot shape is analogous to that of the stop. The slot provides for free fitting of the washers at the stops with the possibility of being taken off, they can be fixed by a screw with tapered head. The screw is screwed into the threaded opening in the stop centre. A clearance hole with its diameter exceeding that of the screw is made coaxially to the threaded opening; the clearance hole has a tapered reaming of the screw head entry hole so that the head can be set countersunk in respect to the washer side surface. Spring-loaded parts or units of the machine which can be moved are rigidly or pivotally connected to the washer butts on the both ends. The possibility of spring-loading in two mutually inversed directions is provided.

EFFECT: possibility of spring-loading in two mutually inversed directions is provided.

2 dwg

FIELD: mechanics.

SUBSTANCE: invention relates to helical spring fastening and spring tension adjustment device. The proposed device comprises plate (P1) with two rows of holes (12, 13) spaced for a distance equal, approximately, to spring coil diametre. Holes of one row are displaced with respect to those of the other row. Plate (P1) is furnished with a gripping-locking device with a threaded rod that has a hook arranged on its one end. Aforesaid threaded rod is screwed into inner thread (15) made in plate (P1) with the plate axis parallel to that of the spring. Plate (P1) arranged between the rows of holes (12, 13) features the shape allowing aforesaid threaded rod passage. Plate (P1) comprises cylindrical wall with inner thread (15) arranged between two rows of holes (12, 13). Two flat parts (10) of plate (P1) are arranged on both sides of aforesaid cylindrical wall.

EFFECT: reliable fastening and accurate spring tension adjustment.

2 cl, 4 dwg

FIELD: construction, road engineering.

SUBSTANCE: invention is related to device for suspension of sound-insulation elements. Spring-loaded suspension comprises spring (6) and two fixtures (5, 7) for spring. One fixture (7) for spring is fixed on device (8) for suspension. Spring (6) is screwed onto first fixture (7). The second fixture (5) for spring is fixed on opening of sound-insulation element (3) by means of pressing disks (2, 4) and is screwed in spring (6) so that around 3 turns of spring (6) are left free. Spring (6) is made with rigidity that makes from 15000 N/m to 25000 N/m. Sound-insulation wall consists of bearing structure socle and spring-loaded suspensions. Sound-insulation elements of wall are fixed by means of spring-loaded suspension.

EFFECT: creation of frameless structure able to introduce efforts from all directions through fixing device into bearing structure.

2 cl, 1 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly to suspensions. Proposed device comprises spring with different-diametre coils secured between the spring support plates. Inner and outer support plates 4, 3 are fitted on cylinder 6 of shock-absorbing post and radially spaced apart. When in 1st shock-absorbing position, spring 1 rests by section 1a of smaller-diametre coils d upon inner support plate 4. In 2nd shock-absorbing position (II), spring 1 rests by section 1b of larger-diametre coils D upon outer support plate 3.

EFFECT: simplified spring adjustment.

11 cl, 3 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive suspensions and transport facilities incorporating such suspension. Suspension comprises spring 1, cover 3 and centering cup 7 supporting coiled spring end 2 in cover 3. Centering cup 7 has its top part provided with, in fact, round, press-fitting 11 that forms hollow part to receive cover 3. Ribs 14 are arranged along inner edges of cover 3. Shape of ribs 14 allows their arrangement on ledge 13 made inside press-fitting 11. Cover 3 and centering cup 7 comprises appliances to lock angular position of spring 1 relative to cup 7. Press-fitting depth varies continuously to make inclination over entire length interact with cover 3 and coiled spring end. The deepest part of press-fitting 11 forms locking appliances for edge 10 of cover 3. Transport facility comprises abode described suspension.

EFFECT: fixed angular position of spring in cover and on centering cup, simplified suspension assembly.

6 cl, 3 dwg

FIELD: transport.

SUBSTANCE: car variable-rigidity spring support 1 consists of main part 6 and rigid or semi-rigid insert 7. Suspension spring 1 rests directly onto rigid or semi-rigid insert 7. Said main part 6 comprises truncated-cone base 8 running from smaller diametre top side. Truncated cone elongation 9 runs coaxially from said base, elongation larger diametre being smaller than least diametre of base 8. Insert 7 comprises truncated-cone base 13 running from smaller diametre top side. Truncated cone elongation 14 runs coaxially from said base. Insert 7 has axial cavity with its inner shape and sizes corresponding to outer shape and sizes of elongation 9 of main part 6.

EFFECT: simplified design of support element.

9 cl, 8 dwg

FIELD: machine building.

SUBSTANCE: spring is twisted and can have both cylindrical and profiled shape. Attachment flanges are connected to edges of spring. A cavity excluding the contact of extreme working turns of spring with flanges is made on each flange. Extreme turns are bent and cut so that spring turns do not contact each other during spring compression with flanges at maximum load. Threaded holes are made in extreme spring turns on flat surfaces of their contact to attachment flanges. Attachment flanges are provided with holes opposite threaded holes and attached to extreme spring turns by means of screws.

EFFECT: improving manufacturability of spring design.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: intention relates to working tools with manual control. Proposed working tool comprises, at least, one control handle. Said handle is coupled with drive motor via, at least, one damping element. Said damping element comprises helical spring with, at least, one end fitted on guide. Helical spring is spaced from guide in first radial distance for first distance. Said first distance is measured in the first plane located perpendicular to working tool lengthwise axis. In second radial distance, helical spring is located at second distance from said guide, smaller than that in the first direction, or said distance equals zero. Second distance is measured in second plane located in transverse direction z and in lengthwise direction x and perpendicular to vertical direction y. Helical spring has central lengthwise axis directed, in fact, in transverse direction. Guide and/or helical spring feature shape other than a circle. At least, one section of said guide features oblate-ring-section and/or helical spring one section is oblate on, at least, one side.

EFFECT: better damping properties.

21 cl, 26 dwg

FIELD: transport.

SUBSTANCE: invention relates to machine building. In compliance with first version, proposed gasket is composed by elongated linear article composed by vibroisolating segments interconnected by one or two crosspieces made up of narrow strip. In compliance with second version, proposed gasket is composed by elongated linear article composed by vibroisolating segments interconnected by thin strip composed by a cylinder or its parts, or a crimp or its parts.

EFFECT: possibility to be fitted on different-diameter springs.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: displacement device to be used with actuators is described. The displacement device to be used with a piston actuator comprises the first bush which, at least partially, is enclosed by the second bush and connected to the second bush in a movable way. The displacement device is additionally equipped by a stop to limit the value of displacement of the first bush in respect to the second bush, and the displacement element is set between the first and the second ends of respectively the first and the second bushes to press the first bush from the second bush. The displacement element is completely placed inside the chamber provided by the first bush and the second bush.

EFFECT: improved design.

17 cl, 12 dwg

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