SU775042A1 - Erecting crane for mines - Google Patents

Description

one

 The invention relates to mine erecting cranes used in the cramped conditions of mine workings for the production of repair, installation, dismantling and loading and unloading 5.

The closest of the known technical solutions is a crane mounted on a vehicle 10 and containing a telescopic boom mounted on a vertical column with the possibility of rotation in horizontal and vertical planes, the boom drive and the lower support assembly 5 with the drive and the supports installed symmetrically relative to the longitudinal vehicle axles l.

However, the crane cannot provide 2Q at the same time good maneuverability, stability and large capacity at a significant boom angle when operating it in cramped mining conditions, since 25 crane capacity is related to the weight of Msonina, which serves as a counterweight to the lifted load, as a function of:

L

.

where P is the weight of the mine installation,

crane; B - shoulder weight

crane (distance from the center of the body of the crane to the lower support unit); P, is the weight of the lifted load; - Shoulder weight of the lifted load.

Therefore, the well-known crane, which provides 6OLE1 load capacity at a significant boom angle, has increased weight and dimensions and unsatisfactory maneuverability, which makes it difficult to use it in the production of lifting work in cramped mining conditions.

The aim of the invention is to increase the lifting capacity and stability of the crane when changing the boom range while ensuring its maneuverability in the cramped conditions of mine workings.

Claims (1)

For this, the column is provided in the upper part with a spacer device with a drive for interacting with the roof of the mine, and the lower support unit is connected with the upstream column and is positioned relative to its axis in a V-shape, while the drives of the spacer device and the lower support unit are autonomous. FIG. 1 shows the proposed Crane, side view; in fig. 2 - the same, top view; in fig. 3 shows a section of Al on FIG. 2; in fig. 4 is a variant of the execution of the reference node in the section; in fig. 5 - Scheme of stranded rope lines. The shaft mounting crane has a frame 1, by means of which the crane is attached to the vehicle 2, for example a tractor, a vertical column 3 mounted by means of a flange 4 on the frame, a telescopic boom 5 and a lower bearing assembly 6. The vertical column 3 contains a cup 7, in bearings 8 of which rotatably mounted rotary column 9 is installed. Inside the latter, the rod 10 of the spacer is mounted for movement, one end of which is connected to the upper support 11, and the other end is connected to the rod 12 of the hydraulic jack of the thrust. The column 9 is rotated in the lower part with an asterisk 13, and the hydrojack housing expands pivotally connected to bracket 14 of frame 1. Telescopic boom 5 consists of a root section 15, through which the boom is pivotally mounted in the upper part of the turntable 9 of the middle section 16 and the head section 17, carrying at the free end a cargo suspension 18 for securing the lifted load, a hydraulic cylinder 19 for changing the position of the boom in the vertical plane, rope-block systems 20 and 21 for hydraulic jacks 22 and 23 for changing the reach of the boom 5. Hydro The jacks 24 and 25 are kinematically connected by a chain 26 with an asterisk 13 to rotate the boom in the horizontal plane. Boom sections 15-17 are equipped with rollers with forging supports 27 for moving the sections when changing the outreach of the telescopic boom. The lower support unit has carrier beams 28 installed V-shaped relative to the axis of the vertical column 3, lift hydraulic jacks 29 and support 30. In the first embodiment of the support assembly, the carrier beams 28 are rigidly fixed to frame 1, and the hydraulic rod stocks 29 are hingedly connected to the supports 30 {FIG. 3). In the second embodiment, the carrier beams 28 are mounted on the frame 1 pivotally with the possibility of rotation in the vertical plane by the hydraulic jack 29 and carried on the free ends of the support 30 (Fig. 4 A shaft mounting crane works as follows. The vehicle 2 delivers the crane in assembled form to the loading point unloading, turning on the jacks 29, lowering the supports 30 of the lower support assembly to the ground.Then turning on the rod 12 of the jacks, lifting the rod 10 up to the stop of the upper support 11 into the roof. Data 19 telescopic boom 5 is displayed in the desired vertical position, hydraulic jacks 24 and 25 boom in the horizontal plane to the desired angle, and hydraulic jacks 22 and 23 load suspension 18 is supplied to the load, after fixing which moves it. mounted on a vehicle, with a lower support assembly located V-shaped relative to the longitudinal axis of the vehicle, and the upper strut device allows l spacer length of the column, exceeding the height of the excavation, in which the mounted crane. This allows, with a minimum spreading effort, to ensure stable and reliable crane operation at elevated loads and in workings with different roof stability due to the support of the column against the latter. The vehicle on which the shaft mounting crane is installed is intended only when the latter is transported to the work site. Id can have small dimensions, which allows to ensure good crane maneuverability in the cramped conditions of mine workings. Claims Mine shaft mounted crane mounted on a vehicle and containing a telescopic boom mounted on a vertical column rotatable in horizontal and vertical planes, a boom drive and a lower support assembly with a drive and supports mounted symmetrically relative to the longitudinal axis of the vehicle that, in order to increase its carrying capacity and stability when changing the boom reach while ensuring crane maneuverability in conditions ornyh workings column is provided on top of the spacer device with a drive for reacting it with the top of generation, and the lower support unit coupled to said column and positioned relative to the axis V-shaped ,, wherein the drive device and the lower spacer assembly made autonomous. Sources of information taken into account during the examination 1. Spivakovsky A.O. and Rudenko N.F. Lifting transport vehicles. L., Mashgiz, 1949, p. 525 (prototype). XXXX / HuOHXXX / L , a w $ f $$ f V V put. V