RU2298609C1 - Vehicle condition control and warning system - Google Patents

Abstract

FIELD: railway transport: track instruments.

SUBSTANCE: invention relates to portable rail drilling and drilled hole strengthening machine tools. Such machine tools can be used for drilling and strengthening drilled hole for track bolts and rail fasteners in through hardened and non-hardened rails type P50, P65, P75. Proposed portable rail drilling machine tool has housing, hollow spindle, hollow spindle drive with spindle rotation and feed mechanisms, control mechanism and clamping device consists of screw rail stop-grip with clamp replaceable templates. Spindle rotation drive is made in form of hydraulic motor installed on housing and mechanically coupled with spindle made in form of bushing installed in bearing and mandrel with longitudinal slots installed in bushing for axial displacement which accommodates retainer rigidly secured in bushing. Spindle feed mechanism drive is made in form of hydraulic cylinder with rod rigidly secured on housing coaxially to out shaft of hydraulic motor in space of which coupling and bearing of bushing are arranged, and shell installed for movement relative to rod and arranged concentrically relative to rod and provided with flanges to form two working chambers. Shell is mechanically coupled with mandrel of spindle to transmit axial displacement.

EFFECT: simplified design, reduced mass of machine tool, provision of stepless adjustment of speed of rotation and feed of tool.

2 cl, 3 dwg

Description

The device relates to a mechanized traveling tool, namely to portable machines for drilling and simultaneously hardening holes for butt bolts and rail connectors in volume-hardened and non-hardened rails of the type P50, P65, P75.

Closest to the claimed device is a portable rail-boring machine comprising a housing with a hollow spindle drive (with a tool) with spindle rotation and feeding mechanisms, as well as a clamping device consisting of a screw rail stop-gripper with a clamp and replaceable templates, the outlines of which are from opposite sides correspond to the outlines of different rails and which are mounted on the spindle side. This device can serve as a prototype of the claimed [1].

Machines of this design are widely used in railway transport, however, the drive, made in the form of an electric motor with gear mechanisms of rotation and feed, has a significant mass and complicates the design of the machine. In addition, this machine does not have the ability to smoothly control the speed and spindle feed.

The problem solved by the proposed device is to simplify the design, reduce the weight of the machine, as well as to be able to continuously control the speed and feed the tool.

The problem is solved as follows. The drive of the rail-boring machine is made hydraulic - the drive of the spindle rotation mechanism is made in the form of a hydraulic motor mounted on the housing and kinematically connected to the spindle, which is made in the form of a sleeve mounted in bearings, with a mandrel placed in it with axial movement with longitudinal grooves in which the cracker is located rigidly fixed in the sleeve. The drive of the spindle feed mechanism is made in the form of a hydraulic cylinder with a hollow rod and a shell of the hydraulic cylinder concentrically located and movable relative to the rod with the formation of two working chambers. The rod, in the cavity of which the coupling and bearings of the sleeve are located, is rigidly fixed to the housing coaxially with the output shaft of the hydraulic motor. To transmit axial displacement, the shell is kinematically connected with the mandrel of the spindle. The control mechanism is made in the form of a control unit rigidly fixed to the housing, consisting of a control valve, flow regulators and a safety valve, with inlet and outlet channels associated with the inlet and outlet channels of the hydraulic motor and the hydraulic cylinder cavities.

Figure 1 shows a General view of a rail boring machine; figure 2 is a longitudinal section of a hydraulic cylinder; figure 3 is a possible hydraulic diagram of a rail drilling machine.

The machine (Fig. 1) consists of a clamping device 1, a hydraulic motor 2, a feed hydraulic cylinder 3 and a control unit 4.

The clamping device is designed to fix the machine on the rail and includes a stop-grip 5, a clamp 6, a screw with a handle 7. On the stop-grip, removable templates 8 are fixed, which are mounted on the rail with the surface on which this type of rail is marked.

The clamping device is bolted to the housing 9, on the flange 10 of which a hydraulic motor and hydraulic cylinder (bottom) and a control unit (top) are installed.

The hydraulic motor is bolted to the flange. On the other side of the flange, a hydraulic cylinder is installed, consisting of a shell 11 with flanges 12 and a fixed hollow rod 13, mounted on the flange 10 with six bolts. A hollow spindle is installed in the hydraulic cylinder rod, consisting of two elements of the sleeve 14 and the mandrel 15, mounted with the possibility of longitudinal movement relative to each other. Tool 16 is inserted into the spindle mandrel: a drill or chamfer. Torque is transmitted to the spindle by means of a spline coupling 17 fixed by a key on the output shaft of the hydraulic motor.

The hydraulic motor is connected by pipelines 18, 19 to a control unit consisting of a control valve 20, flow controllers 21, 22 and a safety valve 23.

Works rail drilling machine as follows.

The machine is turned on and off by the hydraulic distributor 20. When the hydraulic distributor handle is turned on, hydraulic fluid is supplied through the flow regulator 21 to the hydraulic motor 2, the output shaft torque of which is transmitted to the tool 16 through the sleeve and the mandrel, and through the flow regulator 22 to the hydraulic cylinder 3, which moves the tool axially direction. The feed rate of the tool is changed using the flow regulator 22. The speed of the tool is changed using the flow regulator 21.

When exceeding the permissible axial load, the safety valve 23 is activated, which eliminates the breakdown of the machine and tool.

The applicant made a prototype device, which fully confirmed the claimed benefits.

LITERATURE

1. Patent of the Russian Federation No. 2171328, cl. EB01 31/06, 2001.

Claims (2)

1. Portable rail-boring machine, comprising a housing, a hollow spindle, a hollow spindle drive with rotation and spindle feed mechanisms, a control mechanism, and a clamping device consisting of a screw rail stop-gripper with a clamp and interchangeable templates, characterized in that the rotation mechanism drive the spindle is made in the form of a hydraulic motor mounted on the housing and kinematically connected with the spindle, made in the form of a sleeve installed in the bearings, with a mandrel placed in it with the possibility of axial movement with longitudinal grooves in which a cracker is located, rigidly fixed in the sleeve, and the drive of the spindle feed mechanism is made in the form of a hydraulic cylinder with a rod rigidly fixed to the housing coaxially with the output shaft of the hydraulic motor, in the cavity of which the sleeve and bearings of the sleeve are located, and mounted movably relative to the rod and concentric a shell with flanges located relative to the rod with the formation of two working chambers, and the shell is kinematically connected with the mandrel of the spindle to transmit axial movement. 2. The machine according to claim 1, characterized in that the control mechanism is made in the form of a control unit rigidly fixed to the housing, consisting of a control valve, flow controllers and a safety valve, with supply and exhaust channels associated with the hydraulic motor and working chambers of the hydraulic cylinder.

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