CN110669644A - A mechanical self-leveling petri dish rack - Google Patents

Abstract

The invention relates to a mechanical self-leveling culture dish rack, comprising a support frame, a culture dish support, an upper buffer inner spring, an upper buffer outer spring, a lower buffer inner spring, a lower buffer outer spring and a pressure-bearing foam plate , conical rubber pad, heavy hammer, petri dish support plate, adjustment nut, anti-skid pad and support frame baffle, the upper and lower ends of the middle of the petri dish support are provided with upper and lower conical holes, and the upper conical hole is in the upper and lower conical holes. A conical rubber pad is provided, a heavy hammer is arranged in the conical hole, and the bottom end of the heavy hammer is welded with a petri dish support plate, and the top of the petri dish support plate is provided with a square fence, and the petri dish is placed in the square fence of the petri dish support. The advantages of the invention are: the invention realizes the mechanical automatic leveling of the petri dish by reasonably selecting the weight and the placement position of the weight, solves the problem of the petri dish rack being overturned when the petri dish is randomly placed on the petri dish rack, and is suitable for all kinds of culture The dish rack is placed on the ground, and at the same time, it meets the culture requirements of petri dishes that require a certain inclination, and improves the space utilization of petri dishes.

Description

A mechanical self-leveling petri dish rack

technical field

The invention belongs to the technical field of culture dish racks, in particular to a mechanical self-leveling culture dish rack.

Background technique

A petri dish is a laboratory vessel used for microbial or cell culture. The petri dish is generally made of glass or plastic with a smooth surface. Due to the large number of petri dishes, in order to improve the space utilization of the storage device, the petri dishes are usually placed on the storage rack.

The current petri dish rack is mainly composed of a base, a support column and a carrier frame. Although the above-mentioned petri dish rack can stack the petri dishes through the storage rack, which improves the storage space utilization rate of the culture device, during the placing process, the bottom surface is placed Unevenness or the position of the petri dish close to the edge can easily cause the petri dish rack to tilt. When the petri dish rack is tilted to a certain extent, the petri dish will slide off, which may easily cause cracks or even rupture of the glass petri dish, resulting in a waste of resources.

In the prior art, the petri dish often needs to be tilted for cultivation during the use process. The operator often places one end of the petri dish on an object to achieve inclination. This operation is not fixed, and it is easy to cause the petri dish to roll over. The dish rack cannot meet the requirements, and there is no petri dish rack that can achieve mechanical leveling or a certain angle inclination of the petri dish rack in the prior art.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a mechanical self-leveling petri dish rack, which is suitable for the occasions where the ground of the petri dish rack is uneven or the petri dish needs to be tilted for cultivation. The mechanical automatic leveling is simple and efficient.

In order to solve the above-mentioned technical problems, the technical scheme of the present invention is: a mechanical self-leveling culture dish rack, the innovative point of which is that it includes a plurality of support racks arranged in parallel, and the middle of each support rack is connected by the baffle plate of the support rack Fixing; Petri dish racks are arranged at equal intervals from top to bottom between adjacent two supporting frames, thereby forming several Petri dish rack groups;

The petri dish rack includes a petri dish support, a petri dish support plate and a heavy hammer;

The culture dish support includes a support body in a convex shape, and two sides of the support body are provided with through holes extending along the length direction of the center line of the support body and matched with the support frame, and at the lower end of the through hole of the support body. An adjustment nut is fixedly connected; the support bracket passes through the through holes on both sides of the bracket main body and is threadedly connected with the adjustment nut. The adjustment nut can move up and down along the support bracket to push the bracket main body to move up and down, and the adjustment nut is fixed by the set screw ;

The upper end of the bracket main body is symmetrically provided with L-shaped projections extending from the outside to the inside, the upper and lower ends of the middle part of the bracket main body are provided with connected upper conical holes and lower conical holes, and the upper conical holes There is a conical rubber pad matched with it; the weight is arranged in the middle of the main body of the convex bracket, and the rod body of the weight passes through the lower conical hole, the conical rubber pad and the upper conical hole in sequence, and the weight is The diameter of the rod body of the hammer is larger than the inner diameter of the conical rubber pad, and the end of the rod body of the heavy hammer is welded with the support plate of the culture dish;

The petri dish support plate is arranged between the upper end of the bracket body and the upper end of the L-shaped protruding boss, the bottom end of the petri dish support plate is provided with a pressure-bearing foam plate, and the upper end is provided with a side length greater than the diameter of the petri dish. A square fence; an anti-skid pad is placed in the square fence of the petri dish support plate, a petri dish is placed on the anti-skid pad, a skirt is arranged on the outside of the petri dish support plate, and upper buffer springs and The lower buffer spring, the upper buffer spring is arranged between the L-shaped projecting boss of the culture dish support and the upper end of the culture dish support plate, and the lower buffer spring is arranged between the culture dish support and the lower end of the culture dish support plate .

Further, the upper buffer spring includes an upper buffer inner spring and an upper buffer outer spring, and the lower buffer spring includes a lower buffer inner spring and a lower buffer outer spring.

Further, the stiffness of the upper buffer inner spring is smaller than the stiffness of the upper buffer outer spring, and the length of the upper buffer inner spring is greater than the length of the upper buffer outer spring.

Further, the stiffness of the lower buffer inner spring is smaller than the stiffness of the lower buffer outer spring, and the length of the lower buffer inner spring is greater than the length of the lower buffer outer spring.

Further, the stiffness of the upper buffer spring is smaller than that of the lower buffer spring.

Further, the petri dish racks on the two adjacent petri dish rack groups are arranged staggered up and down.

Further, the taper angle of the upper conical hole and the lower conical hole is 60°, so that the leveling angle of the culture dish rack is 0-60°.

The advantages of the present invention are:

(1) The mechanical self-leveling petri dish rack of the present invention utilizes the gravitational pointing effect of the heavy hammer to realize the mechanical automatic leveling of the petri dish by reasonably selecting the weight and placement position of the heavy hammer, so as to solve the problem that the petri dish can be freely placed on the petri dish rack. The problem of instability of the petri dish rack caused by the storage, at the same time, it can be applied to the petri dish rack placed on the ground inclined or the petri dish rack that requires a certain inclination requirement, so as to improve the space utilization rate of the petri dish storage;

(2) The mechanical self-leveling culture dish rack of the present invention, wherein the upper and lower buffer springs are combined with an inner buffer spring and an outer buffer spring. The outer spring improves the applicability of the petri dish rack; when the quality of the petri dish or the placement inclination is small, only the inner spring with small rigidity and large length plays a role. The inner spring with large length and the outer spring with large rigidity and small length work together, thereby improving the application range of the petri dish rack, further reducing the impact generated during the placing and taking out of the petri dish, and reducing the space between each petri dish on the petri dish rack. mutual influence;

(3) The mechanical self-leveling petri dish rack of the present invention, wherein the petri dish racks on two adjacent petri dish rack groups are arranged up and down, can make the overall structure compact and occupy a small space.

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a front view of a mechanical self-leveling Petri dish rack of the present invention.

FIG. 2 is a top view of a mechanical self-leveling Petri dish rack of the present invention.

3 is a partial enlarged view of a single petri dish of a mechanical self-leveling petri dish rack of the present invention.

4 is a partial enlarged view of the upper and lower buffer springs of a single petri dish of a mechanical self-leveling petri dish rack of the present invention.

5 is a front view of a mechanical self-leveling culture dish rack of the present invention to level the culture dish without tilting.

FIG. 6 is a front view of a mechanical self-leveling culture dish rack of the present invention to place a culture dish obliquely.

Figure 7 is a front view of a mechanical self-leveling Petri dish rack of the present invention to level a Petri dish with tilt requirements.

Detailed ways

The following embodiments can make those skilled in the art understand the present invention more comprehensively, but do not limit the present invention to the scope of the described embodiments.

Example

The mechanical self-leveling culture dish rack of this embodiment, as shown in Figures 1 and 2, includes several supporting frames 1 arranged in parallel, and the middle of each supporting frame 1 is connected and fixed by the supporting frame baffle plate 12; Petri dish racks are arranged at equal intervals from top to bottom between the two support frames 1, thereby forming several petri dish rack groups; the petri dish racks on the adjacent two petri dish rack groups are arranged in a staggered manner up and down, which can make the overall structure compact, Small footprint.

As shown in FIG. 3 , the petri dish rack includes a petri dish support 2, a petri dish support plate 9 and a weight 8. The petri dish support 2 includes a support body with a convex structure, and two sides of the support body are provided with a center along the center of the support body. The through hole extending in the length direction of the line and matched with the support frame is also fixedly connected with an adjusting nut 11 at the lower end of the through hole of the support body; The nut 11 can move up and down along the support frame 1 to push the frame body to move up and down, and the adjusting nut 11 is fixed by the set screw 10 or can be fixed by double nuts.

Two sides of the upper end of the bracket body are symmetrically provided with L-shaped projections extending from the outside to the inside. The upper and lower ends of the middle part of the bracket body are provided with connected upper conical holes 21 and lower conical holes 22, and the upper conical hole 21 There is a conical rubber pad 7 matched with it; the conical rubber pad 7 is preferably soft rubber, and other hard rubber with lower hardness can also be used.

The weight 8 is arranged in the middle of the main body of the convex bracket, and the rod body of the weight 8 passes through the lower conical hole 22, the conical rubber pad 7 and the upper conical hole 21 in turn. The diameter of the rod body of the weight 8 is larger than that of the conical rubber pad. 7, and the rod end of the weight 8 is welded with the culture dish support plate 9; the taper angle of the upper conical hole 21 and the lower conical hole 22 is preferably 60°, and the leveling angle of the culture dish rack is preferably 0- 60°, can also be increased or decreased according to actual requirements.

The culture dish support plate 9 is arranged between the upper end of the bracket main body and the upper end of the L-shaped protruding boss. The lower end of the culture dish support plate 9 is provided with a pressure-bearing foam plate 5, and the upper end is provided with a square whose side length is greater than the diameter of the culture dish. Fence; anti-skid pads 91 are placed in the square fence of the petri dish support plate, petri dish 6 is placed on the anti-skid pad 91, the friction coefficient of the anti-skid pad 91 is equal to the tangent of the required inclination angle of the petri dish 6; the outside of the petri dish support plate 9 is provided with a skirt The upper and lower sides of the skirt are respectively provided with an upper buffer spring 3 and a lower buffer spring 4. As shown in Figure 4, the upper buffer spring 3 includes an upper buffer inner spring 31 and an upper buffer outer spring 32, and the lower buffer The spring 4 includes a lower buffer inner spring 41 and a lower buffer outer spring 42, the upper buffer spring 3 is arranged between the L-shaped projection of the culture dish support and the upper end of the culture dish support plate 2, and the lower buffer spring 4 is arranged between the culture dish support 2 and the lower end of the culture dish support plate 9; the stiffness of the upper buffer spring 3 is smaller than that of the lower buffer spring 4, and the stiffness of the upper buffer spring 3 and the lower buffer spring 4 is the same as that of the culture dish. The quality is matched, the lengths of the upper buffer inner spring 31 and the lower buffer inner spring 41 are both greater than the upper buffer outer spring 32 and the lower buffer outer spring 42, and the rotational moment of the hammer head of the weight 8 about the conical rubber pad 7 is greater than Petri dish 6.

The adjustment process of the mechanical self-leveling culture dish rack of the present embodiment is as follows:

When the ground is uneven or the operator places it, the culture dish 6 is not placed in the center of the corresponding position of the culture dish rack, as shown in FIG. 5 . When the petri dish 6 deviates to the right side of the center of the corresponding position of the petri dish rack, the rotational moment of the petri dish 6 with respect to the conical rubber pad 7 is greater than the hammer head of the heavy hammer 8, causing the petri dish support plate 9 and the heavy hammer 8 to wrap around as a whole The conical rubber pad 7 rotates clockwise, first compresses the upper buffer spring 3 and stretches the lower buffer spring 4, at the same time compresses the conical rubber pad 7 and the right side of the pressure-bearing foam board 5, and the compression of the upper buffer inner spring 31 gradually increases. If the inclination angle or load is large, the compression amount of the upper buffer inner spring 31 exceeds the height difference between the upper buffer inner spring 31 and the upper buffer outer spring 32 , the upper buffer outer spring 32 is further compressed. At this time, the upper buffer inner spring 31 stretches the culture dish support plate 9 upward, the lower buffer outer spring 41 pushes the culture dish support plate 9 upward, and the overall counterclockwise torque of the culture dish support plate 9 and the weight 8 gradually increases. When the rotational moment of the culture dish support plate 9 and the weight 8 with respect to the conical rubber pad 7 is equal to the culture dish 6, the culture dish support plate 9 and the weight 8 are rotated to the left maximum height as a whole, after which the culture dish support plate 9 and The rotational moment of the weight 8 as a whole about the conical rubber pad 7 is greater than that of the culture dish 6, causing the culture dish support plate 9 and the weight 8 to rotate counterclockwise around the conical rubber pad 7 as a whole. When the hour hand rotates beyond the center position, first stretch the upper buffer spring 3 and compress the lower buffer spring 4, and at the same time compress the conical rubber pad 7 and the left side of the pressure-bearing foam board 5, and the compression of the lower buffer inner spring 41 gradually increases, Once the inclination angle or the load is large so that the compression amount of the lower buffer inner spring 41 exceeds the height difference between the lower buffer inner spring 41 and the lower buffer outer spring 42 , the lower buffer outer spring 42 is further compressed. At this time, the lower buffer inner spring 41 pulls the culture dish support plate 9 downward, the upper buffer outer spring 42 pushes the culture dish support plate 9 downward, and the overall clockwise torque of the culture dish support plate 9 and the weight 8 gradually increases, At this time, the height of the right side of the culture dish support plate 9 is greater than the height of the left side, and the culture dish 6 moves to the center of the corresponding position of the culture dish rack under the action of gravity. When the rotational moment of the petri dish support plate 9 and the weight 8 with respect to the conical rubber pad 7 is equal to the petri dish 6, the petri dish support plate 9 and the weight 8 are rotated to the maximum height on the right side as a whole, after which the petri dish support plate 9 and The rotational moment of the weight 8 as a whole with respect to the conical rubber pad 7 is greater than that of the culture dish 6 , causing the culture dish support plate 9 and the weight 8 to rotate clockwise around the conical rubber pad 7 as a whole. This process is repeated until the petri dish 6 reaches the center of the corresponding position of the petri dish rack, and the rotational moment of the petri dish 6 and the hammer head of the heavy hammer 8 with respect to the conical rubber pad 7 is 0, and the leveling process is completed.

Further, when the culture dish 6 needs to be placed obliquely, as shown in FIG. 6 . Since the friction coefficient of the anti-skid pad 91 is equal to the tangent of the required inclination angle of the petri dish 6, when the petri dish 6 is placed on the petri dish rack according to the required inclination angle, the petri dish 6 can be placed on the petri dish rack without relative movement. When the ground is uneven or the operator places the petri dish 6 not in the center of the corresponding position of the petri dish rack, as shown in FIG. 7 . The leveling process is the same as the leveling process when the culture dish is placed horizontally. When the rotational moment of the culture dish 6 and the hammer head of the heavy hammer 8 with respect to the conical rubber pad 7 is 0, the leveling process is completed.

The foregoing has shown and described the basic principles and main features of the present invention, as well as the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention. The claimed scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A mechanical self-leveling culture dish rack is characterized in that: it comprises several supporting frames arranged in parallel, and the middle part of each supporting frame is connected and fixed by the supporting frame baffle plate; On the bottom, there are culture dish racks arranged at equal intervals in turn, thereby forming several culture dish rack groups; The petri dish rack includes a petri dish support, a petri dish support plate and a heavy hammer; The culture dish support includes a support body in a convex shape, and two sides of the support body are provided with through holes extending along the length direction of the center line of the support body and matched with the support frame, and at the lower end of the through hole of the support body. An adjustment nut is fixedly connected; the support bracket passes through the through holes on both sides of the bracket main body and is threadedly connected with the adjustment nut. The adjustment nut can move up and down along the support bracket to push the bracket main body to move up and down, and the adjustment nut is fixed by the set screw ; The upper end of the bracket main body is symmetrically provided with L-shaped projections extending from the outside to the inside, the upper and lower ends of the middle part of the bracket main body are provided with connected upper conical holes and lower conical holes, and the upper conical holes There is a conical rubber pad matched with it; the weight is arranged in the middle of the main body of the convex bracket, and the rod body of the weight passes through the lower conical hole, the conical rubber pad and the upper conical hole in sequence, and the weight is The diameter of the rod body of the hammer is larger than the inner diameter of the conical rubber pad, and the end of the rod body of the heavy hammer is welded with the support plate of the culture dish; The petri dish support plate is arranged between the upper end of the bracket body and the upper end of the L-shaped protruding boss, the bottom end of the petri dish support plate is provided with a pressure-bearing foam plate, and the upper end is provided with a side length greater than the diameter of the petri dish. A square fence; an anti-skid pad is placed in the square fence of the petri dish support plate, a petri dish is placed on the anti-skid pad, a skirt is arranged on the outside of the petri dish support plate, and upper buffer springs and The lower buffer spring, the upper buffer spring is arranged between the L-shaped projecting boss of the culture dish support and the upper end of the culture dish support plate, and the lower buffer spring is arranged between the culture dish support and the lower end of the culture dish support plate . 2 . The mechanical self-leveling culture dish holder according to claim 1 , wherein the upper buffer spring comprises an upper buffer inner spring and an upper buffer outer spring, and the lower buffer spring comprises a lower buffer inner spring 2 . Spring and lower side buffer outer spring. 3 . The mechanical self-leveling culture dish holder according to claim 2 , wherein the stiffness of the upper buffer inner spring is smaller than the stiffness of the upper buffer outer spring, and the length of the upper buffer inner spring is greater than that of the upper buffer inner spring. 4 . The length of the upper buffer outer spring. 4 . The mechanical self-leveling culture dish rack according to claim 2 , wherein the stiffness of the lower buffer inner spring is smaller than the stiffness of the lower buffer outer spring, and the length of the lower buffer inner spring is greater than that of the lower buffer inner spring. 5 . The length of the lower side buffer outer spring. 5 . The mechanical self-leveling culture dish rack according to claim 1 , wherein the stiffness of the upper buffer spring is smaller than the stiffness of the lower buffer spring. 6 . 6 . The mechanical self-leveling petri dish rack according to claim 1 , wherein the petri dish racks on the two adjacent petri dish rack groups are staggered up and down. 7 . 7. The mechanical self-leveling petri dish rack according to claim 1, wherein the taper angle of the upper conical hole and the lower conical hole is 60°, so that the leveling angle of the petri dish rack is 0°. -60°.

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