RU2370598C1 - Lever type working equipment of shaft loading machine with controlled bucket - Google Patents

Abstract

FIELD: mining engineering.

SUBSTANCE: lever type working equipment of the shaft loading machine with controlled bucket comprises a mounting plate 1 equipped with a tillable spar 2, a hydraulic jack type slewing gear 3, an arm 5 pivotally mounted on the tillable spar 2, a pivotally connected dipper arm 6, controlled six-bladed clamshell bucket 8 mounted on the free end of the dipper arm, a hydraulic rack controlling arm position 9, a hydraulic rack controlling 12 dipper arm. The lever type working equipment is equipped with two operating hydraulic racks 14 for six-bladed clamshell bucket connected to the dipper arm 6 by means of rigidly fixed mounting racks 15 and ball connectors 16. The hydraulic rack controlling arm position 9 is connected to the mounting plate 1 by means of ball connector 10 mounted in the relative lug 4 made in the mounting plate 1. To provide increase in angle of rotation of the arm and dipper arm, the hydraulic racks controlling arm 9 and dipper arm 12 position are connected by means of hinge brackets 11, 13 mounted in the lugs made on the upper side of the arm 5, with a possibility of simultaneous as well as successive limited longitudinal movement by means of separate hydraulic racks mounted inside the arm.

EFFECT: improved design of lever type mechanism of shaft loading machines.

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Description

The invention relates to mining, it is designed to increase the thickness of the loading layer of the destroyed rock mass from one installation of a barrel loading machine when sinking vertical shafts by the blasting method, as well as stripping the face in the last phase of loading.

The proposed lever equipment of a barrel loading machine with a controlled grab allows loading of rock mass over a significant area of the bottom of the barrel and with an increased depth of entry without moving the loading machine.

Known working equipment of a boring machine KS-4 according to N.A. Malevich. Machines and complexes of equipment for sinking vertical trunks: M .: Nedra, 1975, S.80-83. The KS-4 boring machine is designed to mechanize the processes of loading rock mass and drilling holes during uprising workings of a rectangular shape with a cross section of 5-9 m ² that are passed from top to bottom through rocks of medium and lower than average strength with fairly uniform crushing. Its lever working equipment consists of an arrow pivotally mounted on a rotary stand, a handle, on the free end of which a double-jaw grapple is pivotally mounted, hydraulic jacks for turning the arrow and handle, as well as for opening and closing the double-jaw grab.

Consider working equipment has a limited scope, since the angles of rotation of the boom and stick and their longitudinal dimensions are insignificant. Such working equipment cannot be used for sinking vertical round trunks and large sections, as well as in medium-hard and strong rocks with uneven crushing.

Known lever working equipment boring machine KS-12 according to N.A. Malevich. Machines and complexes of equipment for sinking vertical trunks: M .: Nedra, 1975, p. 75-79.

The driving mechanism (working equipment) consists of a stand, boom pivotally mounted to the stand, a rotary handle mounted on the end of the boom, hydraulic jacks for turning the boom and handle in the vertical plane, a pneumatic winch mounted on the upper end of the handle and a six-blade grab suspended on a rope to the winch.

A distinctive feature of the driving mechanism of the KS-12 boring machine is that the hydraulic jack for pivoting the handle is pivotally connected to it by means of two levers. This connection allows you to somewhat (not much) increase the angle of rotation of the handle relative to the boom.

The disadvantages of the working equipment under consideration include: the lack of rotation of the equipment in a horizontal plane (for servicing the face along the circumference it is necessary to move the entire machine), the small length of the handle and the relatively small angle of rotation of the arrow, which necessitated the installation of a pneumatic winch at the end of the handle for suspension on a six-blade grab rope with its unstable position when scooping.

The closest to the structural device is the working equipment of the barrel loader "Loader", known by N. A. Malevich. Machines and equipment complexes for sinking vertical trunks: M .: Nedra, 1975, p.57-59. The lever working equipment of the Loader machine consists of a rotary mast with a rack-and-pinion mechanism of its rotation with a hydraulic drive pivotally mounted on the mast of the boom, a rotary handle, a pneumatic winch mounted on the upper end of the handle, a six-blade grab suspended on a rope to a pneumatic winch, as well as hydraulic jacks for turning the boom and handle in a vertical plane.

A feature of the considered working equipment is that hydraulic jacks for turning the boom and the handle are attached to them by means of levers, which makes it possible to slightly increase their rotation angles in comparison with the articulated connection to rigidly fixed brackets.

The disadvantages of the working equipment of the “Loader” shaft loading machine include the following: small lengths and relatively small angles of rotation of the handle and boom, which does not allow mounting the grab directly on the lower end of the handle. The disadvantages also include the suspension of the grab on the rope and its instability at the bottom when scooping up heterogeneous crushed rock mass.

Based on the foregoing, there is a need to develop a structural scheme for the lever working equipment of a barrel loading machine, which has a large amplitude of movement of the upper end of the boom and provides for the capture and loading of rock mass in vehicles with a grab mounted directly on the lower end of the elongated handle, as well as to carry out the capture and cleaning of the mountain mass at the walls of the barrel in the last phase of loading.

The objective of the present invention is to develop a more advanced design of the lever working equipment of barrel loading machines with a controlled grab mounted on the lower end of the elongated handle. At the same time, the rotation angles of the boom and the handle should be increased in comparison with the angles of the existing lever working equipment to increase the depth of the loading layer of the rock mass and the area of servicing the face from one installation of the barrel loading machine.

According to the invention, the tasks are achieved in that the lever operating equipment of the barrel loading machine with a controlled grab, including a mounting plate with a rotatable mast mounted on it, a rack and pinion hydroshift mechanism for its rotation, an arrow pivotally mounted on a rotary mast, a hinge mounted to it, a mounted hinge on its lower free end is a six-blade grab, a hydraulic jack for controlling the position of the boom in a vertical plane, a hydraulic jack for turning the handle relative tionary boom, characterized in that it is provided with two six-bladed control hydraulic jacks for the grapple attached to the handle by means of racks and rigidly fixed ball joints. The jack for controlling the position of the boom is connected to the mounting plate by means of a ball joint mounted in the corresponding socket mounted on the mounting plate. To ensure an increase in the angles of rotation of the boom and the handle, hydraulic jacks for controlling the position of the boom and handle are connected to the boom by means of hinged brackets mounted in grooves made on the upper side of the boom. The hinged brackets have the ability to both simultaneous and sequential limited longitudinal movement by means of separate hydraulic jacks installed inside the boom.

Significant differences are:

1. Lever working equipment of a barrel loading machine with a controlled grab, including a mounting plate with a rotating mast mounted on it, a rack and pinion mast jack and a socket under the ball joint of the lifting jack for lifting and lowering the extended boom, mounted pivotally on the rotating mast connected to the extended mast articulated elongated handle mounted on the free end of the handle, controlled six-blade grab, hydraulic jacks for vertical movement (rotation) p spruces and sticks, two control hydraulic jacks of the grab and hydraulic jacks of the hinged brackets have movable brackets for swiveling the hydraulic jacks of rotation of the extended boom and the handle. The hinged brackets have the possibility of limited longitudinal movement in the grooves of the upper surface of the elongated boom by means of separate hydraulic jacks mounted inside the boom. In this case, the longitudinal movement of the hinged brackets can be carried out both simultaneously and sequentially.

2. Changing the position of the hinged brackets of the jacks of rotation allows you to adjust within wide limits the amplitude of movement (rotation angles) of the elongated boom and handle, respectively. With a large amplitude of the movement of the boom, it becomes possible to unload the rock mass from the bottom of the barrel to a greater depth (thickness of the rock mass layer).

3. The controlled grab is connected by means of a ball or cardan joint to the lower end of the elongated handle with the possibility of its limited rotation in vertical and circular rotation in horizontal planes using two control hydraulic jacks.

The invention is illustrated by drawings.

Figure 1. General structural diagram of the lever working equipment of a barrel loading machine with a controlled grab.

Figure 2. Arrangement of movable hinged brackets with hydraulic jacks for moving along the length of the boom.

Figure 3. Cross section of an arrow.

Figure 4. The diagram of the angles of rotation of the boom with a fixed and mobile hinged bracket for the jack of rotation.

Figure 1 presents the General structural diagram of the lever working equipment of a barrel loading machine with a controlled grab. It consists of a mounting plate 1 with mounted on it: a swivel mast 2, a rack and pinion hydraulic mechanism 3 for turning the mast 2 and a socket 4 under the ball joint. An elongated boom 5 is pivotally attached to the rotary mast 2, an elongated arm 6 is pivotally mounted at the opposite end of the arm 6. A controlled six-blade grapple 8 is attached via a ball joint 7 to the lower end of the arm. 10 to the socket 4 of the mounting plate 1, and the bottom to the movable hinge bracket 11.

The rotation of the elongated handle 6 is carried out using a hydraulic jack 12, attached by a conventional hinge to the upper part of the elongated handle, and the lower one to the movable hinge bracket 13.

The six-blade grapple 8 is controlled by two control hydraulic jacks 14 connected to the elongated handle 6 using rigidly mounted racks 15 and ball joints 16. The lower ends of the control jacks 14 are connected by a single hinge to the yoke 17 of the grab 8.

Figure 2 presents a diagram of the inside of the boom 5 with a hydraulic jack 18 located inside it to move the hinge bracket 11 of the hydraulic jack 9 of raising and lowering the boom and hydraulic jack 19, which moves the hinge bracket 13 of the hydraulic jack 12 of the handle 6.

Figure 3 presents a cross section aa of the boom 5 (figure 1). The hinge brackets 11 and 13 are moved in longitudinal guide grooves 20 made by cuts 20 in the upper part of the handle 5 and the guide rails 21.

Figure 4 presents a diagram of the angles of rotation of the elongated boom 5 with a rigidly mounted and movable hinge bracket 11. I - the horizontal position of the boom 5 and the vertical handle 6. The hydraulic jacks of the turns 9 and 12, respectively, of the boom and the handle in neutral (middle) position. When the hinged bracket 11 (T.A) is rigidly fixed, the angle of the amplitude of the oscillation between the upper and lower limit positions II and III is α '. With the movable hinge bracket 11, the limit positions of the boom are: upper IV, lower V, and the angle of the amplitude of the vibration α ''.

Accordingly, the rotation angles of the handle 6 will change.

The principle of operation of the lever working equipment of a barrel loading machine with a controlled grab.

In the initial phase of loading, the working equipment is placed so that the elongated boom 5, occupying an extremely upper position, ensures the lowering of the elongated arm 6 together with the grab and with its capture of the rock mass with subsequent lifting to a height slightly higher than the height of the vehicle (usually a bucket).

With a small and medium depth of approach, the oscillation amplitude of the elongated boom 5 provides for unloading (loading) over the entire thickness of the layer of destroyed rock mass.

When sinking shafts with a larger entry value in one cycle, the barrel loader with the proposed lever working equipment with a controlled grab should be moved and installed in a new position.

Claims (1)

Lever working equipment of a barrel loading machine with a controlled grab, including a mounting plate with a rotary mast mounted on it, a rack and pinion hydraulic mechanism for its rotation, a boom mounted pivotally on a rotary mast, a articulated handle mounted on the free end of the handle, a controlled six-rods position of the boom, handle control hydraulic jack, characterized in that it is equipped with two control hydraulic jacks for six-blade grabs attached to the handle using rigidly mounted racks and ball joints, the hydraulic jack for controlling the position of the boom is connected to the mounting plate by means of a ball joint installed in the corresponding socket made on the mounting plate, while to provide an increase in the angle of rotation of the boom and the handle, hydraulic jacks of position control the boom and the handle are connected to the boom by means of hinged brackets mounted in grooves made on the upper side of the boom, with the possibility of both simultaneous and sequential limited longitudinal movement by means of separate hydraulic jacks installed inside the boom.

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