JPS6123330Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a wiper lock device for a waste disposal equipment that locks an up-and-down wiper installed in a waste disposal equipment that is installed in a multiple rearing device that houses laboratory animals and removes the filth of the experimental animals. Regarding.

As a filth disposal device installed in a multiple breeding equipment for housing laboratory animals, waste is swept out to the front of a trolley 3 that runs along a dirt receptacle 2 of a multiple breeding equipment 1 as shown in Fig. 1. Those equipped with a wiper 4 are generally known. This trolley 3 moves with the wiper 4 in contact with the bottom surface of the dirt receptacle 2,
The wiper 4 collects dirt and drops the dirt into a dirt dropping tube 5 provided at the end of the dirt receiver 2, thereby cleaning the dirt receiver 2. In order to prevent the wiper 4 from transporting part of the collected dirt to the center of the dirt receptacle 2 again when the trolley 3 moves backward, the structure is such that the wiper 4 is lifted up when the trolley 3 moves backward. However, since most wipers use complicated electrical equipment to raise and lower the wiper 4,
The drawback is that the inside of the electrical device corrodes due to ammonia and moisture emitted from the filth, resulting in frequent malfunctions. If the wiper 4 does not descend, the dirt receptacle 2 will not be cleaned at all.

This invention has two arms that rotate and bend as the wiper moves up and down, and the two arms that support the wiper in the raised state are bent on either or both of these two arms. To provide a wiper lock device which solves the above-mentioned conventional drawbacks by adding a pressing means for lowering a wiper and which can surely lower a wiper which has been raised and fixed. This invention will be explained below with reference to the drawings.

2 to 4 show an embodiment of this invention, in which a wiper for cleaning dirt is installed at the front part (left part in Fig. 2) of a trolley 12 that moves along the guide rail 11 of the dirt receptacle 10. 13 and rotating brush 14
A wiper mounting plate 15 is attached to the wiper mounting plate 15 by a hinge pin 16 so as to be rotatable up and down. And this wiper mounting plate 15 has a rotating pin 1.
8, the support arm 17 is attached to the side plate 1 of the truck 12.
It is attached so as to be freely rotatable up and down about the pivot pin 18 along the axis 2a. Further, a stopper arm 20 is attached to this support arm 17 by a pivot 19 such as a bolt so as to be able to rotate up and down about this pivot 19, and the stopper arm 20 is attached to the side where the pivot 19 of this stopper arm 20 is attached. A fixed shaft 22 fixed to the carriage 12 is inserted into a long hole 21 bored on the opposite side of the carriage 12, and is attached so as to be able to bend up and down. On the other hand, below the pivot shaft 19, a cam shaft 23 is placed on the stand 23 with its axial direction aligned approximately parallel to the center line of the pivot shaft 19.
4, it is attached to the trolley 12 so as to be rotatable in the circumferential direction. The support arm 17 and stopper arm 20 rotate on this camshaft 23 due to the upward rotation of the wiper mounting plate 15, so that the center line A of the pivot shaft 19 is aligned with the rotation pin 18 and the fixed shaft 22.
When the stopper arm 2 crosses the neutral line B connecting the
A cam 25 is fixed to the support arm 17 on one side 25a thereof to prevent rotation of the support arm 17. On the other hand, the bulged other side 25b of this cam 25 is connected to the cam shaft 23.
By the rotation of the
The wiper mounting plate 15 is bent around the hinge pin 16 to rotate the wiper mounting plate 15 downward about the hinge pin 16 as a fulcrum.

Further, an axle 27 of a traveling wheel 26 to which rotation of a rotating shaft (not shown) of a traveling motor of the bogie 12 is transmitted to the camshaft 23 is connected to a large pulley 28 fixed to the axle 27 and the camshaft 23. A small pulley 30 attached via a well-known one-way clutch 29, this small pulley 30, and the large pulley 2
The signal is transmitted by a timing belt 31 wound around the timing belt 8. The one-way clutch 29 transmits rotation in only one direction, and when the truck 12 moves forward (when moving to the left in FIG. 2), the one-way clutch 29 transmits rotation in only one direction.
Only the rotation of 7 is transmitted to the camshaft 23. Further, one end of a spring 32 is attached to the other side 25b of the cam 25 to pull the other side 25b away from the bolt 19, and the other end of the spring 32 is attached to the stand 24.

33 is a roller attached to the wiper mounting plate 15, and when this roller 33 rides on a raised portion 34 provided at the left end of the dirt receptacle 10, the wiper mounting plate 15 is raised. .

Next, the operation of the wiper locking device according to the invention constructed as described above will be explained. The cart 12 runs on the guide rail 11 of the dirt receiver 10, and the wiper 13 and the rotating brush 14 that are in pressure contact with the dirt receiver 10 clean the dirt receiver 10. When the trolley 12 comes to the left end of the dirt receiver 10, the roller 33 rides on the raised portion 34 and the wiper mounting plate 15 rises, and as a result, the support arm 17 and the stopper arm 2
0 rotates downward in FIGS. 2 and 3, respectively.
When the center line A of the pivot 19 crosses the neutral line B between the rotating pin 18 and the fixed shaft 22, one side of the cam 25
The pivot 19 comes into contact with the support arm 17 and the stopper arm 20, and the rotation of the support arm 17 and the stopper arm 20 is stopped. A reversing switch (not shown) reverses the motor for driving the truck 12 to move the truck 12 backward (moves to the right in FIG. 2). At this time, the roller 33
4, the wiper mounting plate 15 uses its own weight to force both arms 17, 20 to rotate downward in FIG. One side 25a of the cam 25 for preventing the wiper mounting plate 15 from moving upwardly locks the wiper mounting plate 15.

Next, when the cart 12 reaches the right end of the dirt receptacle 10, a limit switch (not shown) causes the motor for driving the cart 12 to further rotate in the reverse direction, and the cart 12 moves toward the left end of the dirt receptacle 10 again. At this time, the rotation of the axle 27 of the truck 12 is controlled by the one-way clutch 29.
is transmitted to the camshaft 23, and the camshaft 23 rotates.
Therefore, the cam 25 rotates and the other side 25 of the cam 25 rotates.
b pushes the pivot 19 upward until the center line A of the pivot 19 crosses the neutral line B.
7, 20 upward. When the center line A of the pivot 19 crosses the neutral line B, the wiper mounting plate 1
5 falls due to its own weight, and the wiper 13 falls into the dirt receptacle 1.
Press to 0. In this state, the wiper 13 and the rotating brush 14 move toward the left end of the dirt receiver 10 while cleaning the dirt receiver 10. At this time, since the spring 32 is always pulling the cam 25 in the direction away from the pivot shaft 19, the other side 25b of the cam 25 pushes up the pivot shaft 19, that is, this other side 25
b is prevented from stopping in the upper position. In addition, this wiper lock device uses the rotation of the motor for driving the trolley 12 to rotate the cam 25 to release the lock on the wiper mounting plate 15, so it can be used in a bad environment where there is ammonia emitted by dirt, moisture, etc. However, it operates reliably for a long period of time. Note that the pressing means C is not limited to the cam 25, and a link mechanism, a crank mechanism, or the like may be used as long as it presses the arms 17, 20 to rotate and bend them.

As explained above, the wiper lock device in the experimental animal waste disposal device of this invention is provided with two arms that rotate and bend as the wiper moves up and down.
Since the structure is such that both or one of these two arms is attached with a pressing means that lowers the wiper by bending the two arms that support the wiper in the raised state, the wiper is fixed in the raised state. The wiper can be lowered reliably. Furthermore, because this wiper lock device lowers the wiper using only a mechanical device without using an electrical device, it may malfunction even if used for a long period of time in a bad environment near a dirt receptacle where ammonia, moisture, etc. are present. It has advantages such as less

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing a multiple rearing device, Fig. 2 is a schematic side view showing an embodiment of a waste disposal device equipped with the wiper lock device of this invention, and Fig. 3 is a side view showing the main parts of the wiper lock device. FIG. 4 is a plan view showing the main parts. 10... Dirty receptacle, 11... Guide rail, 12
...Dolly, 12a... Side plate, 15... Wiper mounting plate, 16... Hinge pin, 17... Support arm,
18... Rotating pin, 19... Pivot, 20... Stopper arm, 21... Elongated hole, 22... Fixed shaft,
B... Neutral line, C... Pressing means.

Claims (1)

[Scope of utility model registration request] A support arm is attached to a wiper mounting plate that is attached to a wiper mounting plate that is rotatable up and down by a hinge pin to a truck that moves along a guide rail provided in a dirt receptacle, and is attached to a wiper mounting plate that moves along a side plate of the truck by a rotation pin. A stopper arm is attached to the free end of this support arm so that it can be bent up and down, and a stopper arm is attached to the free end of this support arm with a fixed shaft inserted into a long hole so that it can be bent up and down. With the pivot axis positioned approximately on the neutral line connecting the rotation pin and the fixed shaft, the support arm and stopper arm that support the wiper mounting plate in a raised state are bent around the pivot axis, and the wiper mounting plate is moved around the hinge pin as a fulcrum. A wiper lock device for a laboratory animal waste disposal device, characterized in that it is provided with a pressing means for rotating downward.