RU2514942C1 - Operator's antivibration platform - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: proposed platform comprises rigid carcass, deck and elastically damped elements connecting said carcass with the bed. Every said elastically damped element comprises the case resting on said bed, resilient element composed by spring, top and bottom damping spring stroke limiters made of elastomer. Said spring interacts with said limiters via bottom support barrel and top cover of said spring. Said cover is rigidly coupled with threaded sleeve screwed to platform carcass. Vibration damping element is secured between threaded sleeve and platform carcass. Case top part is connected with cover. Cover end has resilient platform carcass travel limiter secured thereto and made of elastomer. Damper is secured to case base by top pressure plate. Damper comprises gauze flexible element locked by top and bottom washers to rest on the bed. Said bed is composed by plate with fastening bores. Bottom washer is coupled with said bed. Top pressure washer is connected with central ring with female ring aligned therewith and connected with the bed.

EFFECT: higher efficiency, simplified design.

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Description

Vibro-insulated platform refers to the means of protecting the human operator from the harmful effects of vibration and can be used in various kinds of machines and mechanisms, in particular in the textile and light industry, agriculture, and transport engineering.

Known vibration-proof platform containing a box-shaped base with elastic horizontal stops and a rigid base plate mounted on the base by means of ring-shaped cable elastic elements (French patent No. 1560072, CL F16F 15/02, 1969).

The closest technical solution to the claimed object is the technical solution according to the patent of the Russian Federation No. 2399809 (prototype), containing a rigid frame, flooring, which is the supporting surface for the operator, and elastically-damped elements connecting the frame with the base.

The disadvantages of the prototype are: the relatively low efficiency of vibration isolation in the vertical direction due to frictional friction in the cable elastic elements; the complexity of the design due to the cable suspension, made around the perimeter of the platform.

The technical result is an increase in the effectiveness of vibration isolation and simplification of the design.

This is achieved by the fact that in the vibration-insulated platform of the operator, comprising a rigid frame, a deck, which is the supporting surface for the operator, and elastically-damped elements connecting the frame with the base, each of the elastically-damped elements contains a housing resting on the base, an elastic element consisting of a spring the axis of which is perpendicular to the base, and the lower and upper damping spring travel stops made of elastomer, the spring interacting with the stops through the lower support the cup and the upper spring cover, which is rigidly connected to the threaded sleeve, connected by a screw to the scaffold frame, on which the vibration damping element is mounted, located between the threaded sleeve and the scaffold frame and made of Agate plastic or VD-17 type vibration damping mastic while the housing in the upper part is connected to the cover, on the end surface of which, facing the vibration-damping element, an elastic limiter of the platform frame made of elas is fixed a tomer, to the base of the body of the elastically damped elements, made in the form of a round thrust bearing, a mesh damper is rigidly attached by means of an upper pressure washer, which contains a base in the form of a plate with mounting holes, a mesh elastic element, the lower part resting on the base and fixed by a lower washer, rigidly connected to the base, and the upper part is fixed by the upper thrust washer, rigidly connected to a centrally located ring, covered by a coaxially located ring, rigidly connected m with a base.

Figure 1 shows a General diagram of the proposed platform, figure 2 is a section aa of figure 1, figure 3 is a front section of an elastically damped element.

Vibro-insulated operator platform (Fig. 1 and Fig. 2) consists of a rigid frame 4 made, for example, of metal corners, flooring 1 (for example, made of wood or composite material), which is the supporting surface for the operator, and elastically-damped elements 2, connected to the frame 4 and resting on the base 3.

Each of the elastically damped elements (Fig. 3) contains a housing 8 resting on the base 3, an elastic element consisting of a spring 12, the axis of which is perpendicular to the base, and the lower 14 and upper 15 damping travel stops of the spring 12 made of elastomer. The spring 12 interacts with the limiters through the lower support cup 13 and the upper spring-covering cover 9, which is rigidly connected to the threaded sleeve 6, connected by a screw 7 to the frame 4 of the platform, on which the vibration damping element 5 is located, located between the threaded sleeve 6 and the frame 4 of the platform and made of agate plastic compound, or VD-17 type vibration damping mastic. The housing 8 in the upper part is connected to the cover 10, on the end surface of which, facing the vibration-damping element 5, an elastic limiter 11 of the stroke of the frame 4 of the platform made of elastomer is fixed.

To the base 3 of the housing 8 of the elastically damped element, made in the form of a round thrust bearing, a mesh damper is rigidly attached by means of the upper thrust washer 20.

The mesh damper contains a base 16 in the form of a plate with mounting holes 17, a mesh elastic element 21, the lower part resting on the base 16 and fixed by a lower washer 22, rigidly connected to the base 16, and the upper part is fixed by the upper pressure washer 20, rigidly connected to the centrally located ring 19, covered by a coaxially located ring 18, rigidly connected to the base 16.

The density of the mesh structure of the elastic mesh element is in the optimal range of values: 1.2 g / cm ... 2.0 g / cm ³ , and the wire material of the elastic mesh elements is steel grade EI-708, and its diameter is in the optimal range of 0, 09 mm ... 0.15 mm.

The density of the mesh structure of the outer layers of the elastic mesh element is 1.5 times higher than the density of the mesh structure of the inner layers of the elastic mesh element.

The elastic mesh element 21 can be made combined of a mesh frame, filled with an elastomer, for example polyurethane.

Vibro-insulated platform works as follows.

When applying a static load on the platform, i.e. when the operator is installed on the deck 1, the elastic elements 2 give a static draft by the calculated value depending on the weight of the operator. In this case, the rigid frame 4 is lowered down, compressing the spring 12, which perceives vertical loads, thereby weakening the dynamic effect on the base 3 and floor 1 with a working operator. Nonlinear damping in the system is due to the presence of the lower 14 and upper 15 of the spring travel stops 12 made of elastomer. Horizontal vibrations are damped due to the unrestricted (with a gap) location of the lower support cup 13 of the spring 12 and the upper cover of the spring 9.

When a dynamic load is applied from the base 3 from operating equipment, such as a warp knitting machine, the vibration is damped by elastic-damped elements 2, the rigidity of which is calculated for the operation of the "man-platform-elastic elements" system in the resonance mode.

The proposed technical solution is an effective vibration protective means of the operator, as well as simple and reliable in operation.

Claims (1)

A vibro-insulated operator platform containing a rigid frame, a deck, which is the supporting surface for the operator, and elastically-damped elements connecting the frame to the base, and each of the elastically-damped elements contains a housing resting on the base, an elastic element consisting of a spring whose axis is perpendicular to the base, and lower and upper damping spring travel limiters made of elastomer, and the spring interacts with the limiters through the lower support cup and the upper one covering a spring, a cover that is rigidly connected to the threaded sleeve, connected by a screw to the platform frame, on which a vibration damping element is mounted, located between the threaded sleeve and the platform frame and made of Agate plastic or vibration-damping mastic type VD-17, while in the upper part it is connected to the cover, on the end surface of which, facing the vibration-damping element, an elastic limiter of the platform frame is made of elastomer, characterized in that To the case of the elastically damped elements, made in the form of a round thrust bearing, a mesh damper is rigidly fixed by means of an upper pressure washer, which contains a base in the form of a plate with mounting holes, a mesh elastic element, the lower part resting on the base and fixed by the lower washer rigidly connected to the base, and the upper part is fixed by the upper thrust washer rigidly connected to the centrally located ring, covered by a coaxially located ring, rigidly connected to the base iem.

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