DE3412032A1 - Slide-valve turning machine - Google Patents

Abstract

The invention relates to a slide-valve turning machine which is intended for the actuation of shut-off slide valves or similar fittings, arranged in water conduit systems or similar systems, between their open and closed positions. The machine in question is a mobile unit with an actuating shaft driven by a motor, either clockwise or anticlockwise, which shaft can be coupled to the control shaft of a shut-off slide valve, extends downwards from a driving unit and is designed so that it can be coupled to the control shaft of a shut-off slide valve and so that its length can be adjusted.

Description

dr. ing. HEINRICH GEITZ "Patentanwalt *" 7500 Karlsruhe 1. post box 2708

832091/92 * "- * 3_ -

Applicant: Mr.

Hans-Michael Wittenauer
Bachstrasse 16

D-7591 Sasbach

Valve lathe

The invention relates to a slide lathe for. Actuate of or the like. Arranged gate valves or similar fittings between their opening and closing positions, which are motorized and either clockwise or counterclockwise has an actuating shaft that can be coupled to the control shaft of a gate valve.

The gate valves arranged in water pipe systems or similar systems at predetermined distances from one another along a pipe or in the area of pipe branches or the like require a running, in
Maintenance to be repeated at predetermined time intervals. In practice, however, such maintenance does not usually take place with the resulting risk that if a

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Slide has to be operated, this has lost its mobility due to lack of maintenance h.it and therefore no longer from its set operating position to the "respectively other operating position can be changed. That this affects the functionality of entire pipe systems does not need to be discussed.

The aim of the invention is therefore to provide a gate valve lathe / for operating gate valves between their open and closed positions, which in a simple way a for permanent maintenance The operational servicing of such slides allows.

It ^*: is known already become one built on a support frame drill el.is instead of a drilling tool with the interposition of an appropriate adapter with a detachable turn to the shift shaft of a gate valve Betätiqungswelle be equipped is, but this device has J'ür an ongoing slide maintenance than proved to be of little use. So the known device, if it is used to operate gate valves, for example to operate them for maintenance purposes, for example from their closed position to the open position or vice versa, must be held in the correct position by two operators over the slide to be operated that the actuating shaft, which is then connected to the output of the device via an adapter, is in the coupling position with the control shaft of the slide and remains during the slide actuation.

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The developed in view of this state of the art Invention task is according to the characterization of the patent claim 1 solved in that the slide lathe according to the preamble of this claim is a mobile one Device is and that it is from a drive unit The length of the actuating shaft extends downwards and can be coupled to the control shaft of a gate valve is trained.

Such a slide lathe can be moved in a simple manner by means of a slide to be actuated, so that in view of the variable length training of the motor-driven actuating shaft this in easy to couple with the control shaft of the slide to be operated and thus the latter from the one can be actuated in the other operating position and vice versa. The slide lathe according to the invention thus fulfills an indispensable prerequisite for the practical implementation of ongoing valve maintenance.

According to the design features of the invention, the actuating parts can be designed in the manner of a telescopic unit ^- "TJTiTfJeIr - Uηd rotatably connected to the drive unit via a universal joint, but in an angularly movable manner in such a way that angular errors occurring within predetermined limits are compensated, which can occur, for example, that the slide control shaft does not run exactly at right angles to the surface surrounding the slide or that the latter is, for example, uneven or inclined, which must always lead to a corresponding inclination of the slide valve lathe moving over a slide surrounded by such a mounting surface of angular

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errors become necessary when using the valve lathe in the way imprecise over a slide to be operated is set up that the drive of the actuating shaft not directly vertically above the one to be coupled with the latter Shift shaft of the slide is located, but laterally offset by a certain amount. In this case it has it has proven to be useful if one at the end of the actuating shaft remote from the drive unit arranged coupling piece with the actuating shaft also rotatably via a universal joint and in predetermined Boundaries is angularly connected.

Another important design feature is that with the control shaft of a gate valve The actuating shaft can be coupled via a slip clutch that can be adjusted to a predetermined torque is connected to the drive unit, so that depending on the size of the slide to be operated the torque that can be applied to the slide control shaft can be limited. With this slip clutch can it is a matter of what it is to transfer

Acting torque continuously adjustable electromagnetic clutch.

Likewise within the scope of the invention, it is also possible to connect the valve with the switching shaft of a gate valve Actuating shaft and the drive unit of the machine a slip clutch with a according to a predetermined Angle of rotation between the coupling parts taking effect and then mediating a torsionally rigid connection Be arranged stop. This arrangement is important insofar as one is exceeded the set torque the coupling parts move relative to each other until "the torsionally rigid

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Connection of the coupling parts mediating stop becomes effective, which in view of the previous slip process leads to a briefly sudden increase in torque, by means of which it is possible to achieve an increased Applying loosening torque to stuck slides and actuating them · Naturally, this occurs suddenly Torque increase in both directions of rotation of the actuating shaft always occurs when the slip clutch is set so that it is initially in the required direction of rotation when exceeded a predetermined torque can cover a certain slip path.

Die.se slip clutch can have two coaxially arranged Have clutch disks, of which at least one is provided with a driver and the other one arranged in the orbit of the driver, the rotatability of the driver to a predetermined Has a fixed stop limiting the circumference.

Another important design feature of the invention is that the drive unit has an actuating shaft possibly includes an electric motor driving an intermediate gear, which is also reversible in direction of rotation can be. The drive unit can also do the same an electric one driven by an internal combustion engine Have a generator, which means that the device is independent of local power grids, but one that can be reversed Electric motor can operate.

In a further embodiment of the invention, the internal combustion engine the valve lathe optionally from

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Drive the electric generator that drives the drive motor for actuating the actuating shaft supplied with electrical energy, at least one on the drive the wheels of the vehicle, the device can be switched and accordingly the latter can be designed as a self-propelled vehicle.

According to another feature of the invention but the electric motor of the drive unit can also be applied to on-board batteries and it can also be a from the latter supplied electric geared motor as a drive motor for at least one of the chassis wheels be provided.

Finally, there is also a design feature

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dari ^ n that the chassis has at least one steering wheel directly controllable via a handlebar, so that it is possible in a simple manner to move precisely in the case of use of the device over a slide to be operated so that the operating shaft is essentially perpendicular to the switching shaft of the slide can be coupled.

With the help of the attached drawings two versions of the valve lathe according to the invention explained. In schematic views show:

1 shows a first embodiment of a self-propelled vehicle device-trained valve lathe, in a side view,

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Fig. 2 is a view of the slide lathe according to Fig. 1 from the front,

3 shows a rear view of the mobile slide valve lathe according to Fig. 1,

Fig. 4 shows a second embodiment of a likewise valve lathe designed as a self-propelled device in a view as in Fig. I,

Fig. 5

a front view of the slide lathe according to Fig. 4 and

F-i-§. 6 is a rear view of FIG. 4.

The self-propelled slide lathe 10 according to FIGS. 1 to 3 has a chassis frame 13, which is received on a chassis, which consists of two motor-driven wheels 11, II ¹ and a steerable front wheel arranged at a distance therefrom, in which in
in the vicinity of the drivable wheels 11, 11 ', an emergency power unit 14, only indicated schematically, consisting of an internal combustion engine and a drive connection therewith
standing generator is included. The chassis frame 13 comprises two lower and two vertically spaced upper longitudinal members 15, 15 '
and 16, 16 ', which have vertical and

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horizontal frame parts to an open box frame are connected to each other. The two are in the area of one of the lower longitudinal members 15, 15 ' Drivable chassis wheels 11, 11 'connected to each other connecting axis 17, lateral extensions 18, 18 *, from which bearing blocks 19, 19 'continue downward, in which the said landing gear wheels connecting axis is rotatably mounted.

In the middle of the width of this axis there is only a hinted differential gear 20, by means of a bracket 21 on the box girder extending from the underside of the box girder stored i'st. Furthermore, frame parts'22, 22 'are connected to the box frame on the side and on the top, which overlap the drivable chassis wheels. On which, seen in the direction of travel, to the left on the corresponding wheel 11 hihauserstreckenden Frame part 22 is a -not shown-driver seat added and further is the drivable Chassis wheels one which can be actuated in a known manner via a foot pedal 23 and an intermediate linkage 24 Brake 25 assigned. In the direction of travel at a distance from the drivable chassis wheels 11, 11 ' arranged steerable wheel 12 is at one at the front end of the K-ast carrier down extending intermediate piece 26 and pivotable about a horizontally extending steering axis. the Steering movements are given to the steerable wheel via a steering linkage, which can be swiveled from a steering lever 27 articulated on a frame structure with actuating handle 28, one at a distance from the articulation

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point 29 of the steering lever to this connected handlebar 30 and a side of one of the steerable wheel U-shaped cross-bearing block 31 forward-extending lever 32 to which the lower end of the Handlebar is articulated, consists. By pivoting the provided with the operating handle Steering lever in the direction of travel or opposite to the direction of travel, the steerable wheel 12 pivoting movements around its vertical steering axis, with which the valve lathe designed as a three-wheeled vehicle is controllable in a known manner.

The frame structure 35, on which the steering lever 27 is articulated at 28, extends approximately in the middle of the -longitudinal extension of the box frame from this upwards. Within this frame structure is a direction of rotation reversible Electric motor 36 with a vertically extending axis of rotation and a flange-mounted Gear 37 integrally formed. Immediately under the electric motor there is one in connection with the latter standing slip clutch 38, adjustable to a predetermined torque, with downward-pointing output shaft. With the output shaft of the gearbox one is essentially vertical downwards the box frame extending through actuating shaft 39 connected, which is telescopic and therefore is adjustable in length. Between the transmission 37 and the actuating shaft 39 there is an inside predetermined limits angular movements of the actuating shaft permitting universal joint 40 and a further slip clutch 41, which is designed so that when a predetermined torque is exceeded, the occurring slip between the coupling halves 42, 42 'after a previous

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certain angle of encirclement by the meeting fixed stops is limited. In a manner not shown, the drive connection between the Electric motor 36 and the actuating shaft 39 can be interrupted.

In addition, the first slip clutch 38 is provided with a drive wheel 44 rotating in a horizontal plane provided, via a gear 45 with a clutch of Fahrwer '^ inntriebs is connected. Output side is to the clutch 46 a vertically extending Drive shaft 47 connected via a bevel gear 48 with one in the middle of the breadth of the box frame horizontally towards the rear running further drive shaft 49 in drive connection stand / f., which in turn is a vertically downwardly extending and the differential gear 20 via a bevel gear 50 in the drive axle 17 of the drivable chassis wheels 11, 11 'driving drive shaft 51 via another Bevel gear 52 drives.

The valve lathe 110 of FIGS. 4 to 6 is the slide lathe 10 according to FIGS. 1 to 3 in - their basic structure is similar. However, she owns no emergency power generator driven by an internal combustion engine, Instead, above the drivable undercarriage wheels 111, 111 ', there is a in the undercarriage frame 113 powerful accumulator 114 added to the Supply of both the electric motor 36 driving the actuating shaft 139 and an electric motor 120 serves, which via a gear 121 to one of the two Drive axle connecting the chassis wheels 111, 111 'to one another 117 works. On the drive axle that connects the two chassis wheels 111, 111 'to one another is also

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one which is not of interest here in its details Brake 125 is arranged, which can be actuated by means of a foot pedal. The control of the via the gearbox 121 acting on the axis 117 motor 120 takes place via a further foot pedal 124. Incidentally, this includes Undercarriage a steerable front wheel 112, which at the lower end of one of the chassis frame 113 extending downwards Tube 126 is rotatably mounted. The steerable front wheel is in a U-shaped bearing block 131, which is with a is rotatably connected through the pipe 126 extending steering shaft. From the top, over the pipe 126 projecting end of the steering shaft 130 extends to both sides of a non-rotatably connected Handlebar 127. s

away, at one end of which a linkage 130 'is articulated is. The other end of this link is with one on the chassis frame 113 articulated steering lever 127 'connected.

The chassis frame 113 is in the manner of a back beam formed and stiffened by means of struts 115 of no further interest here, which are approximately symmetrical run to the actuating shaft 139. The electric motor 136 driving the actuating shaft is on an upper one Support plate 116 of the chassis frame 113 was added and is available with the actuator shaft via a continuously adjustable torque that can be transmitted Electromagnetic clutch 138 in drive connection. Between this adjustable clutch and the one after The actuating shaft 139 equipped with the pull-out part 139 'below is an adjustable slip clutch 141 of the arranged above in connection with the embodiment of FIGS. 1 to 3 described type and between the latter and the upper part of the actuating shaft is also a universal joint 140. The extendable Lower part 139 'of the actuating shaft is at its lower

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End equipped with a coupling piece 128 via a further universal joint 140 ', so that if the installation is not precise the slide lathe over a slide to be loosened the actuating shaft to compensate for the angular misalignment '" able.

When using the valve lathe as intended 10, 110 this is activated in such a way via a Slider moved that the actuating shaft 39, 139 essentially perpendicular to the control shaft of the Slider stands, with a top slide cover, such as a flush with a road surface Lid of a fire hydrant that has previously been removed. After moving the valve lathe in the correct position and their locking in this position is achieved by pulling out the ifntteils 39 with the switching shaft of the actuator to be actuated Coupled slider, the lower end of the actuating shaft with a corresponding to one Matching coupling counterpart of the valve stem Coupling piece is provided. After making a non-rotatable connection between the control shaft of the slide and the operating shaft of the slide valve lathe the actuating shaft 39, 139 by means of the electric motor 36, 136 set in rotation, resulting in a corresponding rotary movement of the switching shaft of the slide and thus leads to its actuation from its open position to its closed position or vice versa. That on the shift shaft of the The torque to be applied to the slide to be operated is on the slip clutch 38, 41 or the electromagnetic clutch (138, 141) adjustable. If such a slide is stuck and the set torque is exceeded occurs at the "slip clutch 41, 141 a rotation of the coupling halves against each other until this on a further relative rotation between

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the stop limiting the coupling parts run up, which naturally leads to a torque shock and thus to the Application of an increased loosening torque leads to the slide to be operated.

Naturally, the slip clutch must be adjusted 41, 141, so that in the for the respective slide actuation required direction of rotation one over relative movement extending a predetermined circumferential angle between the two coupling halves is possible. In view of the reversibility of the direction of rotation of the electric motor 36, 136, the actuating shaft 39, 139 can be driven clockwise or counterclockwise, so that the slide to be operated by means of the slide lathe 1Ö ?, 110 both from the closed position to its open position and can also be operated the other way around.

If the Aufstel1 surface of the slide lathe 10, 110 is inclined or uneven, it can happen that the normally vertically extending actuating parts 39, 139 can only be coupled to the control shaft of a slide by accepting a certain lateral deflection of its lower end. Such angular errors are compensated for by the universal joint 40 arranged between the coupling and the gearbox in the slide valve lathe 10 or by the universal joints 140, 140 'in the machine according to FIGS. In the last-mentioned embodiment, the precise alignment of the machine is also possible via a slide to be actuated by the additional ¹ link 12? Located at the upper end of the steering shaft. relieved.

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The slide to be operated with such a slide valve lathe is in particular Gate valves in water supply systems. This type of gate valve is usually located under the roadway moved from sidewalks and streets. Accordingly, the slide valve lathe must also be used on busy roads be set up. In this respect, it is in the form of a signaling system that is of no further interest here Rotating beacon 5 5, 155 equipped, which, however, in relation The present invention is just as uninterested as the ones required for roadworthiness Additional equipment.

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Claims (15)

Patent claims: 1.1 valve lathe for operating od in water pipe systems .., like. arranged gate valves or similar valves between their opening and closing positions, with an actuating shaft that is motor-driven either clockwise or counter-clockwise and can be coupled to the control shaft of a gate valve, marked, by training as a mobile device and by the fact that the drive unit (36, 136) according to at the bottom and one with the selector shaft Gate valve couplable actuating shaft (39,139) is designed to be variable in length. 2. valve lathe according to claim 1, characterized in that the drive unit (36, 136) downward extending actuating shaft (39, 139) designed as a length-adjustable telescopic unit is. -2- EPO - GOPY 832091/92 * - ^ 3. valve lathe according to claim 1 or 2, there-by characterized in that the actuating shaft (39, 139) with the drive unit (36, 136) via a universal joint (40, 140) rotatably, but is connected angularly movable within predetermined limits. 4. valve lathe according to claim 3, characterized in that with the remote from the drive unit End of the actuating shaft (139) via a universal joint (140 ') on the coupling with the switching shaft of a Coupling piece (128) that mediates shut-off valve, non-rotatably, but within the structurally specified Boundaries is angularly connected. -V 5. Slide lathe according to one of the claims 1 to 4, characterized in that with the selector shaft a gate valve. Coupling actuating shaft (39, 139) via a to a predetermined torque adjustable slip clutch (38, 138) is connected to the drive unit. 6. .Slide lathe according to claim 5, characterized in that that the slip clutch is a steplessly with regard to the torque to be transmitted by it adjustable electromagnetic clutch (138). 7. slide lathe according to one of claims 1 to 6, characterized in that between the actuating shaft which can be coupled to the switching shaft of a gate valve (39, 139) and the drive unit (36, 136) a slip clutch (41, 141) with a according to a predetermined Angle of twist between the coupling parts effective and., a torsionally rigid connection -3- EPO - COPY 832091/92 J -? - central stop is arranged. 8. slide lathe according to claim 7, characterized in that the slip clutch (41, 141) has two Coaxially arranged clutch disks having at least one of the clutch disks with a driver is provided ud that the other clutch disc is arranged in the orbit of the driver, the rotatability of the driver to a predetermined circumferential angle limiting fixed stop owns. 9. valve lathe according to one of the claims 1 to 8, characterized in that the drive unit one the actuating shaft (39, 139) possibly via an intermediate gear driving electric motor (36, 136) comprises. 10. Schieb.erdrehmaschine according to claim 9 ", characterized characterized in that the electric motor (36, 136) driving the actuating shaft (39, 139) is reversible in direction of rotation is. 11. slide lathe according to claim 9 or 10, characterized in that the drive unit has a driven by an internal combustion engine, electrical Includes generator. 12. Slide lathe according to one of the claims 9 to 11, characterized in that the drive unit can be switched from driving the electric generator to driving at least one of the wheels (11, II ¹ ) of the chassis of the device and accordingly the latter is designed as a self-propelled vehicle. -4- EPO - COPY 832091/92 ^Ί -V- 13. Slide lathe according to one of the claims 9 to 12, characterized in that the electric motor (36) of the drive unit can be applied to on-board batteries (114). 14. valve lathe according to claim 13, characterized characterized in that one of the on-board batteries (114) Electric gear motor (120) that can be supplied as a drive motor for at least one of the drive wheels of the device is provided. 15. slide valve lathe according to claim 14, characterized in that the chassis has at least one directly Steering wheel (112) that can be controlled via a handlebar (/ 127) . χ, bes vk. ζ t. -5- EPO - COPY