UA139377U - DYNAMIC EXTINGUISHER OF VIOLATIONS OF THE LIFTING VESSEL - Google Patents

Abstract

Dynamic vibration damper for mining shafts of the mining industry contains inertial weight, damping devices. To increase efficiency and maintenance, the inertial weight is made of collapsible plates, the shape of the inertial weight is made in the form of a symmetrical truncated pyramid with a rectangle at the base, which is suspended under the sector unloading of the skip on cardan joints, which allows it to move in the frontal, lateral direction. and rotate around its axis. The bottom of the inertial weight is fixed symmetrically by pneumatic cylinders, in addition on all sides there are rubber damping elements which dampen fluctuations about the established vertical limiting racks. Contains cardan joints, pneumatic cylinders, rubber dampers, racks, collapsible inertial weight, which has the shape of a truncated cone, truncated sphere, sphere, pyramid with a base in the form of a square, rhombus, polygon. Damping elements, which are located on the sides of the inertial weight, have the shape: the letters "P", square, rod, rectangle. Contains a device for automatic pressure change in pneumatic cylinders, depending on the force of oscillations. Contains hydraulic cylinders with pneumatic damper, in the amount of 4, 6, 8, 10 pieces per inertial weight. To increase the damping of oscillations, the rubber damper on the inclined surface of the sector gate has a length on the entire side surface of the inertial weight, which increases the contact area. Collapsible inertial weight is suspended on one, two or three rods.

Description

A useful model belongs to the mining industry, in particular to a vessel that moves in flexible, rigid, cable-profile conductors reinforcing vertical shafts.

A known pendulum dynamic vibration damper, which reduces the range of oscillations, containing cables that are connected to the object of oscillation through a support device, and to the lever through an additional support device, made in the form of a disc fixed to the lever by means of braces and clamps, through which the cables pass.

IPatent Me 534603, 50, MPKU: E16E 15/28; Oscillating pendulum dynamic damper /

B.G. Korenez, A.N. Blecherman - Application: Mo 2151414/28 dated 02.06.1975, published: 05.11.1976, Bull.

Mo 411.

The disadvantage of this dynamic vibration damper is the large unassembled weight of the damper, the impossibility of adjusting the weight of the damper, large height dimensions, the absence of hydraulic and pneumatic dampers, the impossibility of adjustment, as well as resetting to the required vibration frequency, the difficulty of maintenance in the limited space of the mine shaft, the development of a device for engineering industry.

A known dynamic vibration damper of structures containing an inertial weight connected to the structure by means of rod hangers hinged to the structure and the inertial weight, and a core installed in the inertial lever with the possibility of vertical movement along the guides, and a suspension of adjustable length, hinged to the structure and the core, and the damping device placed on the inertial weight under the core. (Patent MO 1024567 A 50), MIC: Е0О4В 1/98; Oscillating dynamic damper / B.V.

Ostroumov, A.V. Perelmuter, M.P. Condra; State Design Institute "Ukrproektstalkonstruktionsiya" - Application: Mo 3375036/29-33 dated 01.04.1982, published: 06.23.1983,

Bul. Me231|.

The disadvantage of this device is the following: - the structure has large dimensions in height, due to the large dimensions, it is difficult to maintain it in the limited dimensions of the mine shaft; - there are no rubber dampers of the combat device; - there are no dampers that limit the amplitude of oscillation in a compressed space; - the device is designed for damping the vibrations of buildings.

The basis of a useful model is the task of creating a highly reliable and highly efficient one

From the design of a dynamic vibration damper in the "vessel-reinforcement" system for the mining industry, namely for mine shafts, the implementation of which would allow: - to significantly reduce the level of dynamic vibrations in the "vessel-reinforcement" system both in the frontal and lateral directions, and rotation around its axis; - to expand the range of operating frequencies of oscillation; - simplify equipment maintenance; - reduce the weight and dimensions of the levers; - increase the level of equipment reliability; - limit the amplitude of device oscillation; - exclude the occurrence of resonant oscillations in the "vessel - reinforcement" system both in the frontal and lateral directions; - to level the movement of the vessel along the depth of the trunk, when it is loaded with minerals with eccentricity.

The task is solved by the fact that in the dynamic damper of vibrations of the lifting vessel for mine shafts of the mining industry, containing an inertial weight, damping devices, according to a useful model, to increase the efficiency of work and maintenance, the inertial weight is made of collapsible plates, the shape of the inertial weight is made in in the form of a symmetrical truncated pyramid with a rectangle at the base, which is suspended under the sectoral unloading of the skip on cardan joints, which allows it to move in the frontal, lateral direction, and rotate around its axis, the bottom of the inertial weight is fixed symmetrically by pneumatic cylinders, in addition, rubber cylinders are located on all sides damping elements that dampen vibrations against installed vertical limiting racks. It contains cardan joints, pneumatic cylinders, rubber dampers, racks, collapsible inertial weight in the form of: truncated cone, truncated sphere, sphere, pyramid with a base in the form of a square, rhombus, polygon. The damping elements, which are located on the sides of the inertial weight, have the shape: letter "P", square, rod, rectangle. It contains a device for automatically changing the pressure in pneumatic cylinders, depending on the strength of the oscillations. Contains hydraulic cylinders with a pneumatic damper, in the amount of 4, 6, 8, 10 pieces per one inertial weight. To increase damping of vibrations, the rubber damper on the side of the inclined surface of the sector gate has a length over the entire side surface of the inertia weight, which increases the contact area. Collapsible inertial weight is suspended on one, 60 two or three rods.

Tuning to resonant frequencies during the movement of the vessel in the conductors at operating speeds occurs due to the weight of the lever, the length of the suspension, the pressure in the pneumatic cylinders (hydraulic cylinders), the shock interaction of the rubber dampers with the struts, the contact area of the rubber damper with the struts, and its shape. The levers have the shape of a truncated pyramid, a truncated cone, a truncated sphere, a sphere, a pyramid with a base in the form of: a rectangle, a rhombus, a square, a polygon, this allows the inertial lever to have a greater weight and amplitude of movement in the compressed space under the sectoral unloading of the vessel.

The dynamic damper has a collapsible inertial weight, which is suspended on one, two or three rods.

The dynamic damper has hydraulic cylinders with a pneumatic damper, in the amount of 4, 6, 8, 10 pieces per one inertial weight.

Additional equipment (not shown in Fig. 1-4) allows you to reduce/increase the pressure in pneumatic cylinders (hydraulic cylinders) during significant fluctuations of the vessel, which allows you to expand the range of damping of operating frequencies.

The proposed useful model of a dynamic vibration damper (hereinafter DHC) is explained by the drawings, which show the basic design of the DHC of a vessel in the "vessel-reinforcement" system: - in fig. 1 - the DHA vessel is depicted. Side view; - in fig. 2 - the DHA of the vessel is depicted. Front view; - in fig. C - a cross-section of a vessel is shown. Top view of round DHA; - in fig. 4 - a cross-section of a vessel is shown. Top view of a rectangular DHC with truncated edges on two hangers; - in fig. 5 - a cross-section of a vessel is shown. Top view of a rectangular DHC on two hangers.

In fig. 1 shows the location of the DHA devices under the unloading of the vessel, where: 1 - vessel (skip); 2 - inclined surface of the sector shutter; C - cardan suspension; 4 - inertial lever made of recruitment plates; 5 - rubber dampers; 6 - pneumatic cylinders; 7 - limiting vertical racks; 8 - a limiting frame for securing loads; 9 - cargo plates; 10 - a rod for securing loads.

Fig. 2 shows the location of the DHA devices under the unloading of the vessel.

Z Frontal view, where: 1 - vessel (skip)) 2 - inclined surface of the sector shutter; C - cardan suspension; 4 - inertial lever made of recruitment plates; 5 - rubber dampers; 6 - pneumatic cylinders; 7 - limiting vertical racks; 8 - a limiting frame for securing loads; 9 - cargo plates; 10 - cargo fastening rod; 11 - mine shaft conductor.

In fig. C - a cross-section of a vessel is shown. A top view of a round DHA, where: 1 - vessel (skip); C - cardan suspension; 4 - inertial lever made of recruitment plates; 5 - rubber dampers; 5.1 - rubber damper through the entire lever; 6 - pneumatic cylinders; 9 - cargo plates; 10 - a rod for securing loads.

In fig. 4 - a cross-section of a vessel is shown. Top view of a rectangular DHK with truncated edges on two hangers, where: 1 - vessel (skip); C - cardan suspension; 4 - a lever from recruitment plates; 5 - rubber dampers; 6 - pneumatic cylinders; 7 - limiting vertical racks; 9 - cargo plates; 10 - a rod for securing loads.

In fig. 5 - a cross-section of a vessel is shown. A top view of a rectangular DHC on two hangers, assembled from identical plates 9, where: 1 - vessel (skip); C - cardan suspension; 4 - inertial lever made of recruitment plates; 5 - rubber dampers; 6 - pneumatic cylinders; 7 - limiting vertical racks; 9 - cargo plates; 10 - a rod for securing loads.

The suspension of the lever 4, collected by the plates 10, on one, two or three rods 10 under the sector discharge of the skip 1 to the bottom of the inclined part of the sector shutter 2, is carried out with the help of cardan joints 3, the second edge of the rod 10 has a limiting frame for fastening loads 8, rubber dampers 5, which have the shape of the letter "P", are attached to the side surfaces of the loads. The lever 4 is fixed from all sides by pneumatic cylinders to the frame of the vessel 1 with the help of cardan joints 3. The lever, unlike known analogues, has the form of a pyramid with different bases, which allows it to be most effectively placed under sector unloading.

The operation of the DHA vessel.

During the movement of the vessel 1, along the depth of the trunk, as a result of the loading of the skip with eccentricity, the curvature of the conductors, the shock interaction with the shots, rotation in the flexible conductors, it perceives the dynamic load from the conductors 11, which leads to the occurrence of oscillations in the "vessel-reinforcement" system as in the lateral and frontal direction and rotation around its axis, which can lead to resonant 60 oscillations. The vessel 1 perceives the dynamic load from one conductor 11 and partially transfers it to the opposite one, and a part of the oscillations is perceived by the DHC of the vessel, which dampens the oscillations due to the movement of the inertial lever 4, recruited by the plates 9, in lateral, frontal, and rotation around its axis. In the case of slight oscillations of the inertial lever 4, its movement is damped by pneumatic cylinders 6, which are located on all sides, in case of significant oscillations, rubber dampers 5 in the form of the letter "P" are connected to the work, and they additionally dampen the oscillations about the racks 7 and the inclined surface of the sector shutter 2. In Fig. . 1 and 2, the movement of the inertial lever 4 in different directions is depicted by the dashed line, the pneumatic cylinders 6 are additionally equipped with an automatic pressure control device, which allows you to further expand the range of damping of the operating frequencies of the vessel's oscillations, and the installation of two pneumatic cylinders 6 per edge further expands the range of operating frequencies.

The proposed design of the DHK vessel allows: - to significantly reduce the level of dynamic fluctuations in the "vessel - reinforcement" system both in the frontal and lateral directions, and rotation around its axis; - to expand the range of operating frequencies of oscillation; - simplify equipment maintenance; - reduce the weight and dimensions of the levers; - increase the level of equipment reliability; - limit the amplitude of device oscillation; - exclude the occurrence of resonant oscillations in the "vessel - reinforcement" system both in the frontal and lateral directions; - to level the movement of the vessel along the depth of the trunk, when it is loaded with minerals with eccentricity.

Claims (7)

USEFUL MODEL FORMULA 1. A dynamic vibration damper of a lifting vessel for mine shafts in the mining industry, containing an inertial weight, damping devices, which is distinguished by the fact that, to increase the efficiency of work and maintenance, the inertial weight is made of collapsible plates, the shape of the inertial weight is made in the form of a symmetrical truncated pyramid with With a rectangle at the base, which is suspended under the sectoral unloading of the skip on cardan joints, which allows it to move in the frontal, lateral direction, and rotate around its axis, the bottom of the inertial weight is fixed symmetrically by pneumatic cylinders, additionally on all sides there are rubber damping elements that vibrations are damped by the installed vertical limiting racks. 2. A dynamic damper according to claim 1, which is characterized by the fact that it contains cardan connections, pneumatic cylinders, rubber dampers, racks, collapsible inertial weight, which has the form of: a truncated cone, a truncated sphere, a sphere, a pyramid with a base in the form of a square, rhombus, polygon. C. A dynamic damper according to claim 1, which differs in that the damping elements located on the sides of the inertial weight have the shape of the letter "P", a square, a rod, a rectangle. 4. A dynamic extinguisher according to claim 1, which is characterized by the fact that it contains a device for automatically changing the pressure in the air cylinders, depending on the strength of the vibrations. 5. A dynamic extinguisher according to claim 1, which differs in that it contains hydraulic cylinders with a pneumatic damper, in the amount of 4, 6, 8, 10 pieces per one inertial weight. 6. Dynamic damper according to claim 1, which is characterized by the fact that to increase vibration damping, the rubber damper on the side of the inclined surface of the sector shutter has a length over the entire side surface of the inertial weight, which increases the contact area. 7. Dynamic damper according to claim 1, which is characterized by the fact that the collapsible inertial weight is suspended on one, two or three rods.