JPH04117227A - Device of cleaning dirt pan of animal raising device - Google Patents

Abstract

PURPOSE:To adjust contact pressure between a brush and a dirt pan and to control cleaning power by moving a pinion to a gear face and back of a rack gear only by normal and reverse revolution of a driving motor and adjusting height of the rack gear. CONSTITUTION:A pinion 4, namely a brush 6 is moved to a gear face and back of a rack gear only by normal and reserve revolution of a driving motor and height of the rack gear 7 is adjusted so that contact pressure between the brush 6 and a dirt pan 20 can be adjusted. Further when contact pressure between the rack gear 7 and the pinion is strengthened, cleaning powder is increased and when is weakened, the cleaning power is also reduced. In this case, since force of removing the pinion 4 from the rack gear 7 is proportional to the contact pressure, meshing of the rack gear 7 with the pinion 4 will not come off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for cleaning dirt trays for breeding vessels for laboratory animals kept mainly in pharmaceutical laboratories and the like.

[Prior Art] A large number of experimental animals are kept in pharmaceutical research laboratories, etc., and a large number of breeding vessels for these experimental animals are usually arranged side by side, with a waste receptacle placed below them. This waste receptacle is always kept clean so as not to contaminate the surrounding area of the facility, but it is a large stainless steel box so that it can commonly catch the waste that falls from each vivarium.

Some cleaning devices for such waste trays simply run water onto the bottom of the tray, but as shown in Figure 7, there are devices installed under the animal breeding containers 3o, 3o, etc. Sprockets 32 and 33 located at both ends of the dirt tray 31
In some cases, a chain 34 is wrapped around the body, and a shaft to which a brush 36 is fixedly attached is passed through the chain 34, and the brush 36 is driven to rotate for cleaning. Although not shown, other known brush rotating devices for cleaning the bottom of the saucer include one in which the brush is attached to a shaft with a pinion that engages with a rack gear, looped through a chain, and one in which the brush runs automatically. ing.

[Problem to be solved by the invention] The system shown in FIG.
Since the direction of movement and the direction of rotation of 6 are opposite to each other, after cleaning the floor surface, the result is that dirt or water splashes that have been thoroughly washed are left behind on the cleaned floor surface.

This invention was made in order to solve such problems, and its purpose is to provide a waste tray cleaning device for animal breeding containers that has a simpler structure, reduces the failure rate, and can obtain high cleaning power. It is about providing.

[Means to solve the problem]

That is, in order to solve the above-mentioned problems, the present invention provides a cleaning device for a dirt tray for an animal rearing device, in which a slope is formed at one end, a rotatable flexible stay is pivotally attached to the other end, and the dirt tray is mounted on the side surface of the dirt tray. is a rack gear attached to the board so that its position can be adjusted up and down,
a traveling frame having a plurality of guide wheels rotating on rails installed on both side surfaces of a dirt tray; a shaft fitted with a pinion that is attached through an elongated hole drilled in the traveling frame and meshes with the rack gear; It is characterized by comprising a brush fixed to the shaft, and biasing means attached to both sides of the traveling frame and applying a biasing force to the shaft to which the pinion is fitted.

[For production]

Initially, the pinion (ie, brush) is parked at the upper (behind the teeth) end of the rack gear. Before starting cleaning, first, wash water is flowed from the washing water port, and the animal waste that has fallen on the bottom of the waste receiving tray is washed away to the drain port located at the end. Next, the traveling frame is moved backward, so that the urging force of the urging means is not applied, and the brush is brought to a free height. When the traveling frame is moved forward in this state, the pinion comes into contact with the inclined surface of the end of the rack gear and eventually meshes with the teeth of the rack gear.

Then, the brush rotates and scrubs the surface of the dirt tray in the direction of movement, cleaning it. When the pinion reaches the rear end of the rack gear, the pinion contacts the flexible stay and pushes up the flexible stay to stop it at the end of the saucer. At this position, the biasing force by the biasing means does not act and the height is at a free level. Next, when cleaning is completed, the entire traveling frame is moved back toward its original position, but at this time the pinion rides on the flexible stay, and the brush eventually passes over the rack gear and comes into contact with the dirt tray that has been cleaned. Return to the original position without any hesitation.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a dirt tray cleaning device for an animal breeding container according to the present invention, FIG. 2 is a side view, and FIG. 3 is a diagram showing ABC of FIG. 1.
It is a view from arrow D. Reference numeral 1 denotes a traveling frame, on which shafts 2.2 equipped with guide wheels 3.3, . . . are mounted in the front and rear. Reference numeral 6 denotes a rotating brush, which is integrally fixed to a shaft 5, and blades 4.4 are fitted on both sides of the shaft 5. Reference numeral 7 denotes a rack gear that meshes with the pinion 4, and the rack is fixed to a plate 8. The rack gear 7 is fixed with bolts 9 through long holes drilled in the plate 8, so that it cannot be positioned vertically. is adjustable.

Further, the shaft 5 to which the pinion 4 is attached is connected to the rack gear 7 through an elongated hole 11 bored in the center of the traveling frame 1.
mesh. As shown in these figures, the rack gear 7.7 is mounted with its teeth facing downward, so that the teeth of the pinion 4 mesh with the rack gear 7 on the lower side. Note that the guide wheel 3.3 is connected to the dirt tray floor 20.
The vehicle is designed to run on rails 10.10 installed at both ends of the vehicle.

Next, as shown in FIG. 4, the traveling frame 1 has a shaft 12.
Metal fittings 14 and 15 are fixed vertically, and a moving metal fitting 16 and a coil spring 17.17 are fitted onto these shafts 12.13. The pinion 4 fitted on the shaft 5 is pressed by the urging force of these urging means and meshed with the rack gear 7. Therefore, when installing the rack gear 7, adjusting the height to the lower side of the plate 8 increases the vertical engagement pressure between the pinion 4 and the rack gear 7, or in other words, the contact pressure between the brush 6 and the bottom surface 20 of the dirt tray, and the rack gear 7 is installed. When the height is adjusted to the upper side of the plate 8, the contact pressure between the brush 6 and the dirt receiving tray floor 20 becomes weaker. Therefore, it is necessary to adjust the contact pressure depending on whether dirt is difficult to remove or dirt is easy to remove.

FIG. 5 is a perspective view showing the state of both ends of the rack gear 7. That is, as shown in (a), a slope 7a is formed on the inlet side of the rack gear 7, and when the pinion 4 comes into contact with the slope 7a, the pinion 4 meshes with the tooth surface. Further, a flexible stay 18 is rotatably attached to the exit side of the lug gear 7, and when the pinion 4 comes into contact with the flexible stay 18, (
The flexible stay 18 rotates and rises from the state b) as shown in (c), and when the pinion 4 is removed, it returns to its original position due to gravity. Although the traveling frame 1 is not shown, there is a traveling unit attached to the top (for example, a device that pulls the entire traveling frame by a chain drive).
It is pulled and driven back and forth.

The structure of the filth tray cleaning device for an animal breeding container according to the present invention is as described above, and its operation will be explained next.

As shown in FIG. 6, initially the pinion 4 (i.e., the brush 6
) is waiting at position ■. Before starting washing, first, washing water is flowed from the washing water port 22, and the animal waste that has fallen on the bottom of the waste receiving tray is washed away to a drain port (not shown) at the end. Next, the traveling frame 1 is moved backward, and the pinion 4 is applied to the stop plate 23 at the position (3), and the flyer 6 on the rack gear 7 is lowered to the free height H. Furthermore, bring it to the position (■) to ensure that the free height is H, and then stop the retreat. When the traveling frame 1 is moved forward in the state (2), the pinion 4 comes into contact with the inclined surface of the inlet (2) of the rack gear 7, and eventually meshes with the teeth of the rack gear 7. Then, the brush 6 rotates and moves while scrubbing the surface of the dirt receiving tray in the direction of movement, cleaning it. When the pinion 4 reaches the rear end of the rack gear 7, it comes into contact with the flexible stay 18 and the flexible stay 1
Push up 8 and stop it at position ■. In this position (■), the brush 6 is in contact only with the brush bearing 19 (see FIG. 4), but when the dirt on the brush surface is cleaned with the cleaning water sprayed from the cleaning nozzle 24 in this state, the brush 6 itself also begins to rotate. Due to this action, not only the entire circumference of the brush 6 can be cleaned, but also the centrifugal force caused by the rotation blows off solid matter adhering to the brush toward the outer circumference, thereby cleaning the entire brush 6. Next, when cleaning is completed, the entire traveling frame 1 is moved back toward its original position, but at this time, the pinion 4 rides on the flexible stay 18 (
The brush 6 passes over the rack gear 7 and returns to the original position ■ without coming into contact with the dirt tray 20 that has been cleaned.
Return to position.

The embodiment of the present invention has been described above, but as a further modification, the rack gear and pinion may be arranged only on one side of the dirt receiving tray. Furthermore, this dirt tray cleaning device can be widely used not only for experimental animals related to pharmaceuticals but also for rearing a large number of animals side by side.

〔Effect of the invention〕

Since the apparatus for cleaning a dirt tray for an animal breeding container according to the present invention has the structure described in detail above, the pinion, that is, the brush 6 can be moved to the tooth surface and the back surface of the rack gear 7 simply by the forward and reverse rotation of the drive motor. I can do it. Further, by adjusting the height of the rack gear 7, the contact pressure between the brush 6 and the dirt receiving tray 20 can be adjusted. Furthermore, if the contact pressure between the rack gear 7 and the pinion 4 is increased, the cleaning power will also be increased.
If the contact pressure is weakened, the cleaning power will also be weakened. In this case, the force with which the pinion 4 tries to disengage from the rack gear 7 is also proportional to the contact pressure, so the rack gear 7 and the pinion 4 will never come out of engagement in any case. Furthermore, since the dirt washed by the brush is rapidly sent in the unwashed direction, the washed dirt tray becomes cleaner than the conventional one.

[Brief explanation of drawings]

FIG. 1 is a plan view of a dirt tray cleaning device for an animal breeding container according to the present invention, FIG. 2 is a side view, and FIG. 3 is a diagram showing ABC of FIG. 1.
4 is a partial perspective view of a traveling frame and a pinion attached to the traveling frame; FIGS. 5(a) and 5(b);
(c) is a perspective view showing the state of both ends of the rack gear;
The figure shows the operating state of the filth tray cleaning device for an animal breeding device according to the present invention, and FIG. 7 is a schematic diagram of a typical conventional filth tray cleaning device for an animal breeding device. 1--Traveling frame 2-Guide wheel shaft 3-Guide wheel 4--Pinion 5--axis (for pinion) 6--Brush 7--Rack gear 8--Mounting on plate lO--Rail 12. 13
-Axis 14.15--Bracket 16...-Movement bracket 17...-Spring

Claims (1)

[Claims] (1) A rack gear with a slope formed at one end and a rotatable flexible stay pivotally attached to the other end, and mounted on a mounting plate on the side of the waste tray so that its position can be adjusted up and down, and installed on both sides of the waste tray. a running frame having a plurality of guide wheels that rotate on a rail that rotates, a shaft fitted with a pinion that is attached through an elongated hole bored in the running frame and meshes with the rack gear, and a shaft that is fixed to the shaft. 1. A dirt tray cleaning device for an animal breeding container, characterized in that the device comprises: a brush having a brush and a biasing means attached to both sides of the traveling frame and applying a biasing force to a shaft in which the pinion is fitted.