JPH0232247Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention is an electric mobile type X mounted on an electric trolley.
The present invention relates to a line device and relates to the running safety of the electric trolley.

BACKGROUND ART The traveling speed of the electric trolley of a conventional electric mobile X-ray apparatus is controlled by a traveling control circuit.
The travel control circuit is provided with a travel speed switch. When this traveling speed switch is set to the maximum speed, the X-ray tube device support arm, for example,
If the pantograph arm, telescopic arm, etc. are not securely fixed, especially when moving forward, e.g.
In the case of the pantograph arm, the arm rotates toward the operator, and in the case of the telescopic arm, the arm may be stretched, potentially injuring the operator.

Purpose This invention was made in order to prevent the above-mentioned accident, and its purpose is to store and fix the X-ray tube device support arm when the electric trolley is running, and to ensure that the storage and fixation is ensured. To provide an electric mobile X-ray device which runs only at a low speed even if the traveling speed of an electric trolley is set to the highest speed when the vehicle is not being operated.

Configuration The configuration of the present invention will be explained based on examples.

Figure 1 shows the first part of the electric mobile X-ray device of the present invention.
It is a figure showing an external view of an example.

In FIG. 1, reference numeral 1 denotes an electric truck, and 2 denotes a driving wheel of the electric truck 1, which is driven by a compound motor. 3 is a subordinate wheel of the electric trolley 1, 4 is an X-ray device main body, and control devices such as a travel control circuit are also provided. 5 is a handle, 6 is a support column, 7 is a pantograph arm support moving member slidably attached to the support column 6, 8
10 is a pantograph arm supporting the X-ray tube device 9;
is a protruding member attached to the pantograph arm 8, 1
1 is a protrusion member 1 attached to the pantograph arm 8
This is a lock device that locks 0. The pantograph arm 8 is housed and fixed by the protruding member 10 and the locking device 11.

FIG. 2 is a diagram showing the configuration of an embodiment of the lock device of the first embodiment, and FIG.
- It is an arrow sectional view taken along the A line.

In FIGS. 2 and 3, 11A is a lock pin, 11B is a spring for returning the lock pin 11A to its original position, 11C is a guide plate for guiding the projection member 10 attached to the panther arm 8, 11D, 11E 11F is a fixing pin that movably fixes the guide plate 11C, and 11F is the guide plate 1.
A return spring for returning 1C to its original position, 11G a support frame, and 11H the projection member 1
0 is inserted along the guide plate 11C and locked by the lock pin 11A, the guide plate 1
It is a micro switch that is turned on when pressed by 1C.

FIG. 4 is a diagram showing the configuration of the travel control circuit of the first embodiment.

In FIG. 4, 20 is a DC current, 21 is a power switch, 22 is a forward/reverse selector switch, and 23 is a forward/reverse selector switch.
is a forward relay, and when energized, contact 1D
1a and 1D2a are turned ON. 24 is a reverse relay, and when energized, contacts 2D1a,
Turn on 2D2a. 25 is a compound winding motor that drives the electric truck, 26 is its main winding coil, and 27 is its subwinding coil. 28 is a first running speed switch that changes the running speed by changing the voltage applied to the main winding coil 26, H is a terminal for high speed, L is a terminal for low speed, and B is a terminal for stopping. 29 is a second running speed switch that controls whether or not to apply a voltage to the shunt coil 27; H is a terminal for high speed, L is a terminal for low speed, and B is a terminal for stop. 11H is a microswitch provided in the lock device shown in FIG. 3, and R is a voltage drop resistor.

Next, the operation of this embodiment will be explained.

When the pantograph arm support moving member 7 shown in FIG. 1 is moved downward, the projection member 10 provided on the pantograph arm 8 is inserted along the guide plate 11C of the locking device shown in FIGS. 2 and 3. and went,
When the locking pin 11A is released from being pressed by the protruding member 10, the locking pin 11A is returned by the return spring 11B, thereby locking the protruding member 10. At this time, when the guide plate 11C is pressed by the protruding member 10, the micro switch 11H is pressed and operated to be in the ON state. Now, turn on the power switch of the travel control circuit shown in FIG. Connect to H side. However, since the micro switch 11H is in the ON state, the output voltage of the high speed terminal H of the second running speed switch 28 is applied to the shunt coil 27 via the b terminal of the micro switch 11H. , the compound motor 25 rotates at high speed. Thereby, the electric truck 1 travels at high speed via the drive wheels 2.

Further, if it is desired to release the protrusion member 10 from the lock pin 11A, the lock pin 11A is pulled out against the return spring 11B to release the lock of the protrusion member 10. When the projection member 10 is not locked by the lock pin 11A, the guide plate 11C is not pressed with a predetermined pressure, so the micro switch 11H does not operate and remains in the OFF state. Therefore, since the micro switch 11H shown in FIG. 4 remains in the OFF state, the shunt coil energizing circuit is opened (to terminal a side), and no voltage is applied to the shunt coil 27. . Therefore, even if the first and second running speed switchers 28 and 29 are connected to the high speed terminal H side, voltage is applied only to the main coil 26, and the compound motor 25 only rotates at a low speed. Therefore,
The electric trolley 1 runs only at low speed via drive wheels 2.

Figure 5 shows the second part of the electric mobile X-ray device of the present invention.
1 is a diagram showing an external view of the embodiment, and parts having the same functions as those in FIG. 1 are given the same reference numerals, and repeated explanations thereof will be omitted.

As shown in FIG. 5, the second embodiment uses a telescopic arm 8A in place of the pantograph arm support moving member 7 and the pantograph arm 8 of the first embodiment. For storing and fixing, a protruding member 36 and a locking device 36A are used.
A locking mechanism as shown in FIGS. 6 to 9 is provided.

FIG. 6 is a front view showing the structure of one embodiment of the locking device of the locking mechanism of the second embodiment, with the cover partially removed, and FIG. 7 is a section taken along the line B--B in FIG. FIG.

In FIGS. 6 and 7, reference numeral 30 denotes a lever for moving a lock pawl member 32, which will be described later, and is pulled by a return spring 31. Further, the lever 30 is configured to be movable integrally with the lock claw member 32 via its rotation shaft 30A. That is, when the lever 30 is rotated about the rotating shaft 30A in the direction of the arrow E shown in FIG.
It is designed to rotate in the direction. 33 is a receiving metal fitting, 34 is a rubber plate, 35 is a cover, and 36 is a protruding member of an engaging portion provided on the telescopic arm 8A.

Locking device 3 shown in FIGS. 6 and 7 above
6A is attached to the X-ray apparatus main body 4.

FIG. 8 is a front view with a part of the cover removed, showing the configuration of one embodiment of the protrusion member of the locking mechanism of the second embodiment, and FIG.
It is a sectional view taken along a line. In this embodiment, a micro switch 11H is provided on the protruding member 36 side.

In FIGS. 8 and 9, 36 is a projection member of the locking mechanism, and 37 is a receiving metal fitting 3 shown in FIG.
3 is a switch push rod that is pushed down by a receiving metal fitting 33 when a protrusion member 36 is inserted into the lock claw member 32 and engaged with the lock claw member 32. 38 is a return spring for returning the switch push rod 37 to its original position, and 11H is a micro switch. This micro switch 11H is
When the switch push rod 37 is pushed down, it is pressed and operated by the thick part of the switch push rod 37,
Turns on (ON).

Next, the operation of the second embodiment will be explained.

When the telescopic arm 8A shown in FIG. 5 is moved downward, the projection member 36 provided on the telescopic arm 8A pushes out the lock claw member 32 shown in FIGS. 6 and 7 and locks the locking device. 3
6A, and when the pressing of the lock claw member 32 by the projection member 36 is released, the lever 30 is pulled by the return spring 31, so the lock claw member 32 returns to its original position. The protruding member 36 is locked. At this time,
The switch push rod 37 is pushed downward by the end of the receiving metal fitting 33, and the thick part of the switch push rod presses the micro switch 11H to operate it and turn it on. The subsequent operation is
The operation is similar to that of the first embodiment.

If you want to release the protrusion member 36 from the lock claw member 32, rotate the lever 30 in the direction of arrow E against the return spring 31 to retract the lock claw member 32 and release the lock of the protrusion member 36. .

Effects As explained above, according to the technical means disclosed in the description and drawings of this specification, the X-ray tube device support arm is housed and fixed when the electric trolley is traveling, and this housed and fixed is ensured. Even if the electric trolley is set to a high running speed, it will only run at a low speed when the
If the tube device support arm rotates toward the operator,
This can prevent stretching. This can eliminate the risk of injury to the operator or the like.

It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without changing the gist thereof.

[Brief explanation of the drawing]

Figure 1 shows the first part of the electric mobile X-ray device of the present invention.
FIG. 2 is a plan view showing the configuration of an embodiment of the locking device of the first embodiment;
3 is a sectional view taken along line A-A in FIG. 2, FIG. 4 is a diagram showing the configuration of the travel control circuit of the first embodiment, and FIG. Mobile type
FIG. 6 is a front view with a part of the cover removed showing the structure of one embodiment of the locking device of the locking mechanism of the second embodiment;
7 is a sectional view taken along the line B-B in FIG. 6, and FIG. 8 is a part of the cover showing the structure of one embodiment of the protruding member of the locking mechanism of the second embodiment. 9 is a sectional view taken along the line C--C in FIG. 8. 1...Electric trolley, 2...Drive wheel of the electric trolley, 3
...Subordinate wheel of electric trolley, 4...X-ray device main body, 5
...Handle, 6...Strut, 7...Panto arm support moving member, 8...Panto arm, 8A...Telescopic arm, 9...X-ray tube device, 10,3
6...Protrusion member, 11,36A...Lock device,
11H... Micro switch, 20... Direct current, 21... Power switch, 22... Forward/reverse selector switch, 23... Forward relay, 24...
Reverse relay, 25... compound winding motor, 26... main winding coil, 27... shunt winding coil, 28... first running speed switch, 29... second running speed switch, R... voltage drop Resistance for use.

Claims (1)

[Scope of utility model registration request] A mobile X-ray device mounted on an electric trolley includes a lock mechanism for housing and fixing a support arm of an X-ray tube device, a detection switch for detecting that the arm is housed and fixed in the lock mechanism, and a detection switch for detecting that the arm is housed and fixed in the lock mechanism. An electric mobile X-ray apparatus comprising a travel control circuit that reduces the speed of the electric trolley when the detection switch does not operate.