DE1048668B

DE1048668B -

Info

Publication number: DE1048668B
Application number: DE1958M0037364
Authority: DE
Priority date: 1958-04-16
Filing date: 1958-04-16
Publication date: 1959-01-15

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Gewichtsausgleich, die es insbesondere bei röntgendiagnostischen Untersuchungsgeräten, mit umlegbarer Lagerstatt ermöglicht, die bei aufrecht stehender Lagerstatt senkrecht zu ihr zu bewegenden Massen weniger wirksam zu machen.The invention relates to a device for counterbalancing, which it is particularly in X-ray diagnostic examination equipment, with reversible storage, which allows when upright standing deposit perpendicular to it to make moving masses less effective.

Bei röntgendiagnostischen Untersuchungsgeräten mit einer umlegbaren Lagerstatt ist die Röntgenröhre gemeinsam mit den Hilfseinrichtungen, wie beispielsweise dem Zielgerät, an einem Röhrenwagen parallel zur Längsrichtung der Lagerstatt und quer zu dieser verschiebbar angeordnet. Außerdem können mit dem Zielgerät beispielsweise für Kompressionszwecke noch Bewegungen senkrecht zur Lagerstatt ausgeführt werden.In the case of X-ray diagnostic examination devices with a foldable bearing, the X-ray tube is together with the auxiliary equipment, such as the aiming device, on a tube carriage in parallel arranged displaceably to the longitudinal direction of the deposit and transversely to this. You can also use the Target device, for example for compression purposes, still executes movements perpendicular to the deposit will.

In jeder beliebigen Lage der Lagerstatt müssen die Gewichte aller beweglichen Teile durch entgegenwirkende Kräfte möglichst ausgeglichen sein. Zu einem derartigen Gewichtsausgleich werden Ausgleichsgewichte oder Federsysteme benutzt. Bei Federsystemen ist es üblich, Kurvenscheiben, Hebel od. dgl. zu verwenden, damit über den ganzen Bewegungsbereich konstante oder annähernd konstante Kräfte übertragen werden, können.In any position of the deposit, the weights of all moving parts must be balanced as far as possible by counteracting forces. to counterweights or spring systems are used for such a counterbalance. With spring systems It is customary to use cams, levers or the like so that forces that are constant or approximately constant over the entire range of motion can be transferred.

Beim Mitbewegen von. Ausgleichsgewichten verdoppeln sich die erforderlichen Beschleunigungskräfte. Für eine horizontale Stellung der Lagerstatt ist eine Anordnung bereits bekannt, welche es gestattet, bei horizontalen Bewegungen der Röntgenröhre und der Hilfsgeräte deren Ausgleichsgewichte auszukuppeln. Die bekannte Anordnung weist insofern Nachteile auf, als bei Röntgenuntersuchungen am liegenden Patienten sehr oft Stellungen der Lagerstatt erforderlich sind, welche nur etwa 3 bis 10° von der Horizontalen abweichen, dann aber müssen die Ausgleichsgewichte jedesmal wieder eingekuppelt werden. Die erneute und rechtzeitige Einkupplung stößt bei den bekannten Geräten aber auf Schwierigkeiten im Untersuchungsablauf.When moving. Counterweights double the required acceleration forces. For a horizontal position of the deposit, an arrangement is already known which allows at horizontal movements of the X-ray tube and the auxiliary equipment disengage their counterweights. The known arrangement has disadvantages insofar as X-ray examinations are performed on the lying position Patients very often require positions of the bed which are only about 3 to 10 ° from the horizontal differ, but then the counterweights have to be re-engaged every time. the Renewed and timely coupling encounters difficulties in the known devices Examination process.

Die Erfindung bezieht sich auf eine Vorrichtung zum Gewichtsausgleich, insbesondere für röntgendiagnostische Untersuchungsgeräte, wobei sich ein Ausgleiclisgewicht für die senkrecht zur Lagerstatt beweglichen Hilfsgeräte gegenläufig zu diesen bewegt, und ist dadurch gekennzeichnet, daß mit Hilfe einer auf das Ausgleichsgewicht einwirkenden, die Reibung des Gewichtes überwindenden Kraft bei senkrechter Stellung der Lagerstatt das Gewicht und die Hilfsgeräte vorzugsweise selbsttätig voneinander entkuppelt sind.The invention relates to a device for weight compensation, in particular for X-ray diagnostics Examination equipment, with a balancing weight for the perpendicular to the deposit movable auxiliary devices moved in opposite directions to these, and is characterized in that with the help of a acting on the balance weight, the friction of the weight overcoming force with vertical Position of the storage place the weight and the auxiliary devices are preferably automatically decoupled from each other are.

Die Erfindung weist einen einfachen Weg zur Entkupplung der senkrecht zur Lagerstatt beweglichen Hilfsgeräte und hat bei Anwendung einer selbsttätigen Kupplungsvorrichtung den Vorteil, daß das Vorrichtung zum Gewichtsausgleich,
insbesondere für röntgendiagnostische
UntersuchungsgeräteThe invention has a simple way of uncoupling the auxiliary devices that are movable perpendicular to the deposit and, when using an automatic coupling device, has the advantage that the device for weight compensation,
especially for x-ray diagnostics
Examination equipment

Anmelder:
C. H. F. Müller Aktiengesellschaft,
Hamburg 1, Mönckebergstr. 7Applicant:
CHF Müller Aktiengesellschaft,
Hamburg 1, Mönckebergstr. 7th

Friedrich-Wilhelm Reiniger, Hamburg-Wellingsbüttel, ist als Erfinder genannt wordenFriedrich-Wilhelm Reiniger, Hamburg-Wellingsbüttel, has been named as the inventor

Entkuppeln und erneute Einkuppeln völlig unmerklich vor sich gehen kann und das Einkuppeln schon bei Abweichungen von etwa 3 bis 5° von der Senkrechten erfolgt. Da eine besonders große Zahl von Untersuchungen gerade in der senkrechten Stellung der Lagerstatt durchzuführen ist, wird dem untersuchenden Arzt durch die Herausnahme des Ausgleichsgewichtes bei dieser Stellung der Lagerstatt die Arbeit wesentlich erleichtert. Der Arzt braucht in diesem Fall nämlich beispielsweise bei einer Umkehr der Bewegungsrichtung nur die Hälfte der bisher erforderlichen Bremsbzw. Beschleunigungskraft aufzubringen. Uncoupling and re-coupling can go completely imperceptibly and the coupling can already occur There are deviations of about 3 to 5 ° from the vertical. Because a particularly large number of examinations is to be carried out in the vertical position of the deposit, the investigating Doctor by removing the balance weight in this position of the bed the work is essential relieved. In this case, for example, the doctor needs to reverse the direction of movement only half of the previously required braking or Apply acceleration force.

Die Erfindung wird an Hand der in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert.The invention is explained in more detail with reference to the exemplary embodiments shown in the drawing.

Fig. 1 zeigt schematisch die Wirkungsweise einer Vorrichtung gemäß der Erfindung bei einer beliebigen Schräglage der Lagerstatt eines Untersuchungsgerätes ; Fig. 1 shows schematically the operation of a device according to the invention at any one Inclined position of the deposit of an examination device;

Fig. 2 zeigt schematisch die Wirkungsweise der Vorrichtung bei senkrechter Lage der Lagerstatt;2 shows schematically the mode of operation of the device with the deposit in a vertical position;

Fig. 3 und 4 zeigen Beispiele zur Erzeugung einer Kraft, welche zur selbsttätigen Entkupplung eines Ausgleichsgewichtes geeignet ist.3 and 4 show examples of generating a force which is used for the automatic decoupling of a Balance weight is suitable.

Die in Fig. 1 dargestellte Lagerstatt 1 ist an dem Fuß 2 eines Röntgengerätes drehbar gelagert. An der Lagerstatt 1 ist ein schematisch dargestellter Röhrenwagen 3 mit einer Röntgenröhre 4 angeordnet, welcher über einen Teil der Länge der Lagerstatt 1 verschoben werden kann und gleichzeitig das der Röntgenröhre 4 gegenüberliegende Hilfsgerät 5, z. B. ein Zielgerät trägt. Während die Hilfsgeräte 5 senkrecht zur Lagerstatt 1, in Richtung eines Pfeiles 7 auf die Lagerstatt 1 und die Röhre 4 hin oder von diesen wegbewegt werden können, ist es auch noch möglich, die Hilfsgeräte 5 in bekannter Weise gemeinsam mit der Röntgenröhre 4 am Röhrenwagen 3 quer zur Lagerstatt 1 zu verschieben. Die letztere Bewegungs-Instead of the bearing 1 shown in Fig. 1 is mounted on the foot 2 of a rotatable X-ray apparatus. At the deposit 1 , a schematically shown tube carriage 3 with an X-ray tube 4 is arranged, which can be moved over part of the length of the deposit 1 and at the same time the X-ray tube 4 opposite auxiliary device 5, z. B. carries a target device. While the auxiliary devices 5 can be moved perpendicular to the deposit 1, in the direction of an arrow 7 towards the deposit 1 and the tube 4 or away from them, it is also possible to use the auxiliary devices 5 in a known manner together with the X-ray tube 4 on the tube carriage 3 to move transversely to deposit 1. The latter motion

809 729/6809 729/6

Claims

possibility is not shown in the drawing for the sake of simplicity. The movement of the deposit 1 from the vertical to the horizontal or vice versa takes place, for example, by motor or by hand throughout with predetermined locking positions. The part of the Uuteruchungsgerätes consisting of tube carriage 3, X-ray tube 4 and auxiliary devices 5, which is movable in the longitudinal direction of deposit 1, is usually balanced by counterweights, so that this part assumes a rest position in any position and thus does not move automatically. These counterweights can act on the tubular carriage 3 via ropes or chains. Instead of the balancing weights, however, spring balancing systems can also be provided. For the sake of simplicity, these compensation systems, which can be of a known type, are also not shown in the drawing. The weight compensation of the auxiliary devices 5, including the housing part 8, is achieved with the help of a counterweight 9, which is mounted displaceably in the housing part 8 and which is attached to a rope or a chain 10, which in turn is guided over a pulley 11 arranged on the tube carriage 3 and, in the case of an inclined position, the bearing 1 is coupled to the housing part 8 at the coupling point 15. The cable 10 is guided out of the housing part 8 over a second deflection pulley 12 arranged on the tube carriage 3 and is finally attached to the tube carriage 3 via a tension spring 13. The second roller 12 is expediently designed as a cam disk in order to compensate for changes in the tensile force as a result of a springy increase or shortening. When the deposit 1 is moved from the vertical position, the balance weight 9 rolls down its path as a result of the force of gravity acting on it until a coupling body 14 arranged on the rope or chain 10 hits the housing 8 at the coupling point 15 and that Tension rope 10. Every movement of the auxiliary devices 5 is now transmitted to the balance weight 9, where the necessary weight compensation is achieved. If the deposit 1 assumes the vertical position shown in Fig. 2, no weight compensation is naturally required, since the direction of movement 7 of the auxiliary devices 5 in this case runs in the horizontal direction and therefore no automatic displacement of the auxiliary devices 5 by gravity is possible. For this reason, when the bearing 1 is in a vertical position, the balance weight 9 is uncoupled. Uncoupling and reconnecting can take place in the following way: The tension spring 13 acting on the cable 10 pulls the balance weight 9 into a position by means of a on the tube carriage 3 with a force that is sufficient to overcome the friction of the balance weight 9 on its path Stop 16 given end position. The coupling body 14 moves away from the coupling point 15 depending on the position of the auxiliary devices 5. The counterweight 9 is thus decoupled, and the auxiliary devices 5 can be moved unhindered by this weight. If the deposit 1 again assumes an inclined position, the balancing weight 9 rolls downwards as a result of the force of gravity acting on it until the coupling body 14 couples the balancing weight 9 again at the coupling point 15. Instead of the tension spring 13, a weight 17 shown in FIG. 3 can also be provided, for example, which is connected to the balance weight 9 with the aid of the rope 10 guided over a pulley 18 and acts as a decoupled force. Instead of the tension spring 13, a leaf spring 19, shown in FIG. 4, can expediently be used with a constant tensile force for uncoupling the counterweight. The decoupled force is expediently kept small compared to the balancing weight 9, since it is added as a constant to the angle-dependent component of the balancing weight 9 and thus leads to a detuning of the balancing system. In the illustrated embodiments, the coupling of the balancing weight 9 occurs automatically when the deposit 1 is turned over in that the auxiliary device 5 and the balancing weight 9 move under the action of gravity, even with small deviations from the vertical position, until a coupling takes place at point 15 . In the device according to the invention, however, the coupling can also take place automatically in another way by z. B. an auxiliary motor with upright deposit 1, the counterweight 9 moved out of its front end position until a coupling at point 1! 5 takes place, whereupon the deposit 1 is moved, for example by means of a tilting motor from the vertical position. Finally, it is also possible to effect the coupling by hand using a lever or linkage, which is particularly recommended for examination devices whose patient bed is turned over by hand. Patent claims:

1. A device for weight compensation, in particular for X-ray diagnostic examination devices, wherein a balance weight for the vertically movable to the bearing instead auxiliary devices move in opposite directions to these, characterized in that a force acting with the aid of the balancing weight (9), overcoming the friction of the weight (9) Force when the bearing (1) is in a vertical position, the weight (9) and the auxiliary devices (5) can preferably be automatically decoupled from one another.

2. Apparatus according to claim 1, characterized in that a spring (13, 19) provides the decoupling force which causes the balance weight (9) regardless of the position of the auxiliary devices (5) in the vertical position of the bearing (1) a assumes the end position given by the arrangement.

3. Device according to claims 1 and 2, characterized in that a weight (17) supplies the uncoupling force which is connected to the counterweight (9) with the aid of a rope (10) guided over a roller (18) .

4. Device according to claims 1 and 2, characterized in that a band spring (19) is preferably used with constant tensile force as the spring.

5. Device according to claims 1 to 4, characterized in that the coupling of the counterweight (9) to the auxiliary devices (5) via a coupling body (14) which is connected to

'is attached to a rope (10 ) connected to the weight (9) and is thus effective when the weight (9) moves, for example as a result of the inclined position of the bearing (1)

Gravity until the coupling point (15) is moved.

6. Device according to claims 1 to 5, characterized in that the balance weight (9) for the purpose of decoupling from the auxiliary devices (5) is movable with the aid of an auxiliary motor when the deposit (1) is vertical.

7. Device according to claims 1 to 5, in particular for X-ray diagnostic examination devices with manually foldable bearing, characterized in that the balance weight (9) for the purpose of decoupling from the auxiliary devices (5) can be moved by hand via a lever or a linkage.

1 sheet of drawings

Ö 809 729/6 1.59Ö 809 729/6 1.59