Constant temperature shaking table movement component and constant temperature shaking table

Abstract

The present invention provides a thermostatic shaker movement assembly and a thermostatic shaker, comprising a bottom plate, a shaker, an eccentric drive mechanism and a follower mechanism, wherein the shaker is arranged directly above the bottom plate; the eccentric drive mechanism is arranged on the bottom plate, capable of driving the shaker to move, and the output end of the eccentric shaft of the eccentric drive mechanism is rotatably connected to a first bearing seat on the shaker through a bearing; the follower mechanism comprises a translation component, a side rocker and a connecting rod, the translation component is located between the bottom plate and the shaker, and can move laterally and / or longitudinally between the two; there are two side rockers, which are arranged in parallel, and one end of the side rocker is hinged to the first side of the translation component; the connecting rod is hinged to the other ends of the two side rockers to form a parallelogram, and the connecting rod is fixedly connected to the first bearing seat. The present invention can only translate but not rotate through the design of the follower mechanism, thereby preventing the first bearing seat from rotating during the operation of the shaker.

Description

Technical Field

[0001] The invention relates to the technical field of constant temperature shakers, in particular to a constant temperature shaker core component and a constant temperature shaker, which can be used for bacterial culture, fermentation, hybridization and biochemical reaction and fermentation, cell tissue research and the like. Background Art

[0002] Most thermostatic shakers have a rigid movement structure and shake in a circular direction driven by an eccentric shaft. During the circumferential shaking of the thermostatic shaker, the shaking plate and the bearing seat of the thermostatic shaker will tend to rotate, resulting in unstable operation of the thermostatic shaker. Summary of the invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a constant temperature shaker movement assembly and a constant temperature shaker, by installing a follower mechanism that can only translate but not rotate on the bearing seat, thereby preventing the shake plate and the bearing seat thereon from rotating during the operation of the constant temperature shaker.

[0004] In order to solve the above technical problems, the present invention provides a constant temperature shaking table core component, comprising:

[0005] Base plate;

[0006] A rocking plate, arranged just above the bottom plate;

[0007] An eccentric drive mechanism is arranged on the bottom plate and can drive the rocking plate to move, and an output end of an eccentric shaft of the eccentric drive mechanism is rotatably connected to a first bearing seat on the rocking plate through a bearing;

[0008] The follower mechanism is arranged on the first bearing seat and comprises:

[0009] A translation component, located between the bottom plate and the rocking plate, and capable of moving laterally and / or longitudinally between the two;

[0010] There are two side swing rods, which are arranged in parallel, and one end of each side swing rod is hinged to the first side edge of the translation component;

[0011] A connecting rod is hinged to the other ends of the two side swing rods to form a parallelogram, and the connecting rod is fixedly connected to the first bearing seat.

[0012] The following mechanism further comprises:

[0013] There are two front swing rods, which are arranged in parallel, and one end of the front swing rod is hinged to the second side of the translation component.

[0014] The other end is hinged to the bottom plate to form a parallelogram, wherein the second side is adjacent to the first side.

[0015] Optionally, a rotation bearing is installed at the position of each hinge shaft.

[0016] Alternatively, the follower mechanism further comprises:

[0017] The sliding track comprises a transverse sliding track and / or a longitudinal sliding track, which is arranged on the bottom plate; and the translation component is installed on the sliding track.

[0018] Optionally, the translation component has a hollow structure, and the first bearing seat and the connecting rod are located in the hollow structure of the translation component.

[0019] Optionally, a fixing seat is provided on the base plate, and correspondingly, the other end of the front swing arm is hinged on the fixing seat.

[0020] Optionally, the first bearing seat is connected to the rocking plate via an adapter plate.

[0021] Optionally, rubber elastic bodies are respectively provided at the four corners of the bottom plate, and the tops of the rubber elastic bodies are connected to the rocking plate.

[0022] Optionally, the rubber elastic body is in the shape of a truncated cone, a concave hole is provided at the top center of the truncated cone, a pin is provided on the rocking plate to be inserted into the concave hole, or a threaded insert is installed in the concave hole, and a screw is provided on the rocking plate to connect with the insert in the concave hole.

[0023] Optionally, the eccentric driving mechanism comprises:

[0024] A driving wheel, mounted on the bottom plate;

[0025] A driven wheel, mounted on the bottom plate and connected to the driving wheel via a belt;

[0026] The eccentric shaft has an upper end connected to the first bearing seat on the rocking plate, and a lower end passing through the second bearing seat on the bottom plate and connected to the driven wheel.

[0027] The present invention also provides a constant temperature shaking table, comprising the constant temperature shaking table core assembly described above.

[0028] The implementation of the present invention has the following beneficial effects:

[0029] The present invention can only translate but not rotate by designing the follower mechanism, thereby preventing the first bearing seat from rotating during the operation of the rocking table. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the constant temperature shaking table core assembly provided by the present invention;

[0031] Figure 2 It is a schematic diagram of the exploded structure of the constant temperature shaking table core assembly provided by the present invention;

[0032] Figure 3 It is a cross-sectional structural schematic diagram of the constant temperature shaking table core assembly provided by the present invention;

[0033] Figure 4 It is a structural schematic diagram of the follower mechanism provided by the present invention;

[0034] Figure 5 It is an exploded schematic diagram of the follower mechanism provided by the present invention.

[0035] Reference numerals in the figures:

[0036] 1-bottom plate; 2-rocking plate; 3-rubber elastic body; 4-fixed seat; 5-follow-up mechanism; 6-driving wheel; 7-belt; 8-driven wheel; 9-second bearing seat; 10-eccentric shaft; 11-first bearing seat; 12-adapter plate;

[0037] 51-connecting rod; 52-side swing rod; 53-translation component; 54-front swing rod; 55-connecting pin; 56-rotating bearing; 57-bearing end cover; 58-shaft head retaining ring. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0041] like Figure 1-5 As shown, an embodiment of the present invention provides a constant temperature shaking table movement assembly, including a bottom plate 1, a shaking plate 2, an eccentric driving mechanism and a follower mechanism 5, wherein:

[0042] The bottom plate 1 is the fixing plate of the whole constant temperature shaker core assembly, and other structures and components of the constant temperature shaker core assembly are directly or indirectly fixed on the bottom plate 1;

[0043] The rocking plate 2 is arranged just above the bottom plate 1. The upper part of the rocking plate 2 is usually a planar structure. The rocking plate 2 is a driven structural member. The rocking plate 2 moves in a circumferential direction under the drive of the eccentric driving mechanism. The rocking plate 2 has a certain bearing capacity to support the container, culture, etc. placed on the rocking plate 2.

[0044] The eccentric drive mechanism is arranged on the bottom plate 1, and can drive the rocking plate 2 to move, and the output end of the eccentric shaft 10 of the eccentric drive mechanism (that is, the upper end of the eccentric shaft 10) is rotatably connected to the first bearing seat 11 on the rocking plate 2 through a bearing;

[0045] Since the rocking plate 2 moves in the circumferential direction under the drive of the eccentric driving mechanism, the rocking plate 2 will rotate while moving in the circumferential direction, resulting in instability of the constant temperature rocking table movement assembly. In this embodiment, the follower mechanism 5 is connected to the first bearing seat 11 fixed on the rocking plate 2. The follower mechanism itself can only translate but not rotate, thereby limiting the degree of freedom of the first bearing seat 11, thereby ensuring the rotation of the rocking plate 2. Specifically:

[0046] The follower mechanism 5 provided in this embodiment is arranged on the first bearing seat 11, and at least includes a translation component 53, a side rocker rod 52 and a connecting rod 51, wherein: the translation component 53 is located between the base plate 1 and the rocking plate 2, and can move laterally and / or longitudinally therebetween; there are two side rocker rods 52, which are arranged in parallel, and one end of the side rocker rod 52 is hinged to the first side edge of the translation component 53; the connecting rod 51 is hinged to the other ends of the two side rocker rods 52 to form a parallelogram, and the connecting rod 51 is fixedly connected to the first bearing seat 11.

[0047] The connecting rod 51 is fixedly installed on the first bearing seat 11 by screws. When the eccentric shaft 10 rotates, the upper end of the eccentric shaft 10 drives the first bearing seat 11 to make an eccentric motion with a constant amplitude with the lower end of the eccentric shaft 10 as the center. At this time, because the follower mechanism 5 limits the first bearing seat 11, the freedom of the first bearing seat 11 to rotate around the upper end of the eccentric shaft 10 has been limited. Therefore, the first bearing seat will not rotate on its own.

[0048] Optionally, a rotating bearing is installed at each hinged shaft. Since the rotation speed of the eccentric shaft is usually high, reaching 1000r / m, the friction at the hinged position is serious. The problem of high-frequency rotational friction can be solved by setting a rotating bearing.

[0049] The constant temperature shaker movement assembly provided in this embodiment adds a follower mechanism 5 at the center of the shaker plate 2 to limit the first bearing seat 11, which can effectively prevent the shaker plate 2 from rotating during the operation of the constant temperature shaker, and improve the stability and uniformity of the shaker plate when running at high speed; the overall operation of the movement is stable, the service life of the movement is extended, and the maintenance cost is reduced.

[0050] The follower mechanism 5 provided in this embodiment is directly fixedly connected to the first bearing seat 11 through a connecting rod 51. The connecting rod 51, two side rocker arms 52 and a translation component 53 form a parallelogram, so that the first connecting rod 51 can only translate but not rotate. This limits the degree of freedom of the first bearing seat 11 directly fixedly connected to the connecting rod 51, so that the first bearing seat 11 will not rotate when being driven by the eccentric driving mechanism; since the rocking plate 2 and the first bearing fixing seat 11 are also fixedly connected to each other, the rocking plate 2 will not rotate when the constant temperature rocking bed is working.

[0051] There are two feasible solutions for implementing the translational motion of the translation component 53, namely, using a sliding track or using a parallelogram rocker structure. The two implementations are described below respectively:

[0052] Optionally, the follow-up mechanism in this embodiment further includes a front swing rod 54, which has two front swing rods 54 and is arranged in parallel, one end of the front swing rod 54 is hinged to the second side of the translation component 53, and the other end is hinged to the bottom plate 1 to form a parallelogram, wherein the second side is adjacent to the first side. The front swing rod 54 and the side swing rod are respectively connected to different sides of the translation component 53, and respectively form parallelogram structures, thereby forming a follow-up mechanism, and driven by the follow-up mechanism, the connecting rod 51 connected to the first bearing seat 11 can only translate but not rotate.

[0053] Optionally, the follower mechanism in this embodiment further includes a sliding track (not shown in the figure), including a transverse sliding track and / or a longitudinal sliding track, which is arranged on the bottom plate 1; the translation component 53 is installed on the sliding track. Since the sliding track and the translation component 53 are connected by sliding and do not rotate, the follower mechanism 5 can only translate but not rotate.

[0054] Optionally, the translation component 53 has a hollow structure, and the first bearing seat 11 and the connecting rod 51 are located in the hollow structure of the translation component 53. The translation component 53 may be annular or U-shaped (when it is U-shaped, the connecting rod 51 is located at the opening of the U-shape), so that the translation component 53 can limit the first bearing seat 51 from the circumferential direction and meet the requirement of the first bearing seat 11 to move in the circumferential direction.

[0055] Optionally, a fixing seat 4 is provided on the bottom plate 1, and accordingly, the other end of the front swing bar 54 is hinged on the fixing seat 4. The fixing seat 4 is fixed on the bottom plate 1 by screws, and is usually fixed at the side of the bottom plate 1, so that a certain distance is reserved between the fixing seat 4 and the translation component 53 to meet the movement requirements of the front swing bar 54. The two ends of the two front swing bars 54 are respectively hinged by the fixing seat 4 and the translation component 53 to form a parallelogram with a changeable shape, so that the translation component 53 can translate with the swing of the two front swing bars 54.

[0056] Optionally, the first bearing seat 11 is connected to the rocking plate 2 via an adapter plate 12, the first bearing seat 11 and the adapter plate 12 are connected by screws or welding, and the adapter plate 12 is fixedly connected to the lower surface of the rocking plate 2 via screws. In the implementation process, the first bearing seat 11 and the adapter plate 12 can also be integrally formed, and then the screw holes are processed on the side of the adapter plate 12.

[0057] Optionally, rubber elastic bodies 3 are provided at the four corners of the bottom plate 1, and the rubber elastic bodies 3 are fixed to the bottom plate 1 by screws, and the top of the rubber elastic bodies 3 is connected to the rocking plate 2. The rubber elastic bodies 3 have certain elasticity and supporting capacity, and can adapt to the rocking of the rocking plate 2 and produce elastic deformation while providing support for the lower surface of the rocking plate 2; the rubber elastic bodies 3 are used to limit the bottom of the four corners of the rocking plate 2, and the rubber elastic bodies 3 can provide support and limit the rocking plate 2 in the vertical direction while producing elastic deformation as the rocking plate 2 deviates; the rubber elastic bodies 3 cooperate with the central follower mechanism 5 to jointly limit the rocking of the entire rocking plate 2; because the rubber elastic body 3 is a non-metallic mechanical component, compared with mechanical components such as springs, it will not generate noise during high-frequency shaking, and will not cause mechanical friction damage to the bottom plate 1 and the rocking plate 2, thereby realizing ultra-quiet operation of the constant temperature rocking bed.

[0058] In this embodiment, a complete limiting system is formed by the rigid limiting of the first bearing seat 11 by the central follower mechanism and the elastic limiting of the rubber elastic body 3 at the four corners:

[0059] The rigid limit of the follower mechanism 5 is mainly used to ensure that the rocking plate 2 oscillates with a constant amplitude in the horizontal direction;

[0060] The elastic limiting function of the rubber elastic body 3 is used as an auxiliary to limit the rocking plate 2 in the vertical direction. At the same time, the elastic deformation characteristics of the rubber elastic body 3 are utilized to reduce the vibration transmitted from the metal parts of the movement.

[0061] As a result, the thermostatic shaker core assembly provided in this embodiment can run ultra-quietly as a whole during the operation of the thermostatic shaker, and mechanical wear can be reduced, providing a comfortable environment for the laboratory.

[0062] Optionally, the rubber elastic body 3 is in the shape of a truncated cone, with the bottom of the truncated cone serving as a fixed end, fixedly connected to the base plate 1 to provide stable support, and the top serving as a movable end, fixedly connected to the rocking plate 2 to be more suitable for the rotation requirements of the rocking plate 2; a concave hole is provided at the top center of the truncated cone, and a pin is provided on the rocking plate 2 to be inserted into the concave hole, or a threaded insert is installed in the concave hole, and a screw is provided on the rocking plate 2 to be connected to the insert in the concave hole.

[0063] Optionally, the eccentric driving mechanism includes a driving wheel 6, a belt 7, a driven wheel 8, an eccentric shaft 10, a first bearing seat 11 and a second bearing seat 9, wherein the driving wheel 6 is mounted on the base plate 1; the driven wheel 8 is mounted on the base plate 2 and connected to the driving wheel 6 through the belt 7; the upper end of the eccentric shaft 10 is connected to the first bearing seat 11 on the rocking plate 2, and the lower end passes through the second bearing seat 9 on the base plate 2 and is connected to the driven wheel 8. During the operation of the constant temperature shaker, the motor directly or indirectly drives the driving wheel 6 to rotate, and the driving wheel 6 drives the driven wheel 8 to rotate through the belt 7. Since the diameter of the driving wheel 6 is smaller than the diameter of the driven wheel 8, the power output deceleration of the driven wheel 8 is realized in this transmission process. The two ends of the eccentric shaft 10 are rotatably connected to the base plate 1 and the rocking plate 2 through the bearing seat, wherein the upper end of the eccentric shaft 10 is the power output end, which is connected to the lower surface of the rocking plate 2 through the first bearing seat 11, and the lower end of the eccentric shaft 10 is the power input end, which is connected to the base plate 1 through the second bearing seat 9, and the eccentric shaft 10 passes through the base plate 1 and is fixedly connected to the shaft hole of the driven wheel 8.

[0064] This embodiment also provides a constant temperature shaker, including the constant temperature shaker core assembly provided in the above embodiment. At the same time, the constant temperature shaker provided in this embodiment also needs to be configured with other necessary structures, such as a base, a drive motor, a control system, etc.

[0065] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A constant temperature shaking table core assembly, characterized in that: include: Base plate; A rocking plate, arranged just above the bottom plate; An eccentric drive mechanism is arranged on the bottom plate and can drive the rocking plate to move, and an output end of an eccentric shaft of the eccentric drive mechanism is rotatably connected to a first bearing seat on the rocking plate through a bearing; The follower mechanism is arranged on the first bearing seat and comprises: A translation component, located between the bottom plate and the rocking plate, and capable of moving laterally and / or longitudinally between the bottom plate and the rocking plate; There are two side swing rods, which are arranged in parallel, and one end of each side swing rod is hinged to the first side edge of the translation component; There are two front swing rods, which are arranged in parallel, one end of each front swing rod is hinged to the second side of the translation component, and the other end is hinged to the bottom plate to form a parallelogram, wherein the second side is adjacent to the first side; A connecting rod, hinged to the other ends of the two side swing rods to form a parallelogram, and the connecting rod is fixedly connected to the first bearing seat; The eccentric drive mechanism comprises: a driving wheel mounted on the bottom plate; a driven wheel mounted on the bottom plate and connected to the driving wheel via a belt; an eccentric shaft, the upper end of which is connected to the first bearing seat on the rocking plate, and the lower end of which passes through the second bearing seat on the bottom plate and is connected to the driven wheel; Rubber elastic bodies are respectively arranged at the four corners of the bottom plate, and the top of the rubber elastic body is connected to the rocking plate; the rubber elastic body is in the shape of a truncated cone, and a concave hole is arranged at the center of the top of the truncated cone, and a pin is arranged on the rocking plate to be inserted into the concave hole, or a threaded insert is installed in the concave hole, and a screw is arranged on the rocking plate to connect with the insert in the concave hole.

2. The constant temperature shaking table core assembly according to claim 1, characterized in that: The front swing arm is provided with a rotating bearing at the position of each hinge shaft.

3. The constant temperature shaking table core assembly according to claim 1, characterized in that: The translation component has a hollow structure, and the first bearing seat and the connecting rod are located in the hollow structure of the translation component.

4. The constant temperature shaking table core assembly according to claim 1, characterized in that: A fixing seat is arranged on the bottom plate, and correspondingly, the other end of the front swing arm is hinged on the fixing seat.

5. The constant temperature shaking table core assembly according to claim 1, characterized in that: The first bearing seat is connected to the rocking plate through an adapter plate.

6. A constant temperature shaking table, characterized in that: The invention comprises a constant temperature shaking table core assembly as described in any one of claims 1 to 5.

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