Cantilever type limiting structure

Abstract

The utility model relates to a cantilever type limiting structure which comprises a machine core assembly, a swing plate, a horizontal limiting swing rod, a vertical limiting swing rod and a support assembly. The support assembly is fixedly installed in an inner cavity of the constant-temperature shaking table, and the shaking plate is movably connected with the support assembly through a vertical limiting swing rod. The machine core assembly comprises a bottom plate, a lower bearing seat, an eccentric shaft, a motor and an upper bearing seat. The lower bearing seat is fixedly installed on the bottom plate, the eccentric shaft is rotatably installed on the lower bearing seat, the motor is rotatably installed at the lower end of the eccentric shaft, and the upper bearing seat is rotatably installed at the upper end of the eccentric shaft. The rocking plate is installed on the upper bearing seat, and the motor drives the eccentric shaft to rotate after being powered on, so that the rocking plate does eccentric motion along with the upper bearing seat. The cantilever type limiting structure is connected with the machine through the support, horizontal limiting and vertical limiting are combined, the space size of the limiting structure is increased, a force arm is lengthened, abrasion to joints of the limiting structure is reduced, the machine runs more stably, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, specifically to a cantilevered limiting structure for a constant temperature shaker mechanism and a constant temperature shaker. Background Technology

[0002] A constant-temperature shaker is a laboratory device that controls and maintains a constant temperature while simultaneously using a vibration device to mix samples evenly. It is widely used in research in fields such as life sciences, biomedicine, and environmental science.

[0003] A constant temperature shaker typically uses a core assembly installed at the bottom left side of the fixed chamber. The core assembly usually consists of a motor and an eccentric shaft. The motor provides the driving force to rotate the eccentric shaft, thereby generating the shaking force of the shaker. This allows the shaker to mix the liquid inside the container evenly, thus improving the experimental results.

[0004] The existing constant temperature shaker mechanism typically consists of a motor and an eccentric shaft. The motor provides the driving force to rotate the eccentric shaft, thereby generating the force to shake the rocker plate. At the same time, there is a set of rocker arm limiting mechanism to limit the rocker plate and prevent it from rotating on its own. This allows the rocker plate to make eccentric circular motion, which can drive the liquid inside the container to mix evenly, thereby improving the experimental effect.

[0005] However, the rocker arm mechanism of the aforementioned rocker has two shortcomings in actual use: First, the limiting mechanism is relatively simple and weak, only limiting in the horizontal direction, which is insufficient. The rocker plate undergoes high-speed eccentric circular motion, generating significant mechanical vibration. This causes the rocker arm mechanism to operate under high load in a high-frequency vibration environment, leading to easy wear at the joints and a short service life. Second, the rocker arm mechanism is generally assembled from metal parts. Metal materials have high rigidity and are not easily deformed, generating significant noise in a high-frequency vibration environment, resulting in a poor user experience. Utility Model Content

[0006] The purpose of this utility model is to provide a cantilevered limiting structure, which aims to overcome the defects of the prior art and solve the problems of large mechanical vibration caused by the high-speed movement of the eccentric shaft on the movement assembly and the large noise generated in the high-frequency vibration environment.

[0007] To address this, the present invention proposes a cantilevered limiting structure, comprising a mechanism assembly, a rocking plate, a horizontal limiting swing rod, a vertical limiting swing rod, and a support assembly. The mechanism assembly and the support assembly are respectively fixed in the inner cavity of a constant temperature shaker, while the rocking plate is mounted on the mechanism assembly. The rocking plate and the mechanism assembly are movably connected by a horizontally set horizontal limiting swing rod, and the rocking plate is movably connected to the support assembly by a vertical limiting swing rod. The horizontal limiting swing rod includes a connecting plate, a pair of transverse swing rods, and a pair of longitudinal swing rods. The mechanism assembly and the connecting plate are rotatably connected by the transverse swing rods, while the rocking plate and the connecting plate are rotatably connected by the longitudinal swing rods. The mechanism assembly includes a base plate, an eccentric shaft, and a motor. When the motor is energized, it drives the eccentric shaft to rotate, causing the rocking plate to move eccentrically with the upper bearing seat.

[0008] As a preferred technical solution of this application, the movement assembly further includes a lower bearing seat and an upper bearing seat; the lower bearing seat is fixedly mounted on the base plate, the eccentric shaft is rotatably mounted on the lower bearing seat, the motor is rotatably mounted on the lower end of the eccentric shaft, and the upper bearing seat is rotatably mounted on the upper end of the eccentric shaft; the rocker plate is mounted on the upper bearing seat.

[0009] As a preferred technical solution of this application, the bearing hole at the left end of the transverse rocker arm is movably connected to two rotating shafts at the bottom of the connecting plate, and the bearing hole at the rear end of the longitudinal rocker arm is movably connected to two rotating shafts at the top of the connecting plate.

[0010] As a preferred technical solution of this application, the lower end shafts of the two horizontal swing arms are installed in the limiting groove of the movement assembly, and the upper end shafts of the two vertical swing arms are fixedly installed in the limiting groove at the bottom of the rocker plate.

[0011] As a preferred embodiment of this application, the upper end of the vertical limiting swing rod is mounted on the bracket assembly by screws, and the lower end of the vertical limiting swing rod is mounted behind the rocker plate by screws.

[0012] As a preferred technical solution of this application, the vertical limiting swing rod includes a connecting rod and a pair of fisheye bearings, which are respectively fixed to the upper and lower ends of the connecting rod by threads.

[0013] As a preferred technical solution of this application, the upper fisheye bearing is fixedly mounted on the bracket assembly by screws, and the lower fisheye bearing is fixedly mounted behind the rocker plate by screws.

[0014] As a preferred technical solution of this application, the horizontal limiting lever is a horizontal limiting lever, and the vertical limiting lever is a vertical limiting lever.

[0015] The cantilever limiting structure provided by this utility model has the following beneficial effects: Unlike the traditional swing arm limiting structure, the cantilever limiting structure is connected to the machine through a bracket, instead of being directly fixed to the core component itself. This increases the spatial size of the limiting structure, lengthens the lever arm, reduces wear at the joints of the limiting structure, makes the machine run more smoothly, and extends its service life. The combination of horizontal and vertical limiting makes the machine run more smoothly.

[0016] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the cantilever limiting structure of this utility model;

[0019] Figure 2 This is an exploded view of the cantilevered limiting structure of this utility model;

[0020] Figure 3 This is an exploded view of the movement components in the cantilevered limiting structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of the movement assembly in the cantilevered limiting structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the horizontal limiting lever in the cantilever limiting structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the vertical limiting lever in the cantilever limiting structure of this utility model;

[0024] Explanation of reference numerals in the attached drawings: 1. Mechanism assembly; 2. Rocker plate; 3. Horizontal limit rocker arm; 4. Vertical limit rocker arm; 5. Bracket assembly; 11. Base plate; 12. Lower bearing seat; 13. Eccentric shaft; 14. Motor; 15. Upper bearing seat; 31. Connecting plate; 32. Horizontal rocker arm; 33. Longitudinal rocker arm; 41. Connecting rod; 42. Fisheye bearing. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1-2 As shown, the cantilevered limiting structure of this utility model includes: a mechanism assembly 1, a rocker plate 2, a horizontal limiting rocker arm 3, a vertical limiting rocker arm 4, and a bracket assembly 5.

[0027] The mechanism assembly 1 is fixed to the inner cavity of the constant temperature shaker with screws. The rocking plate 2 is mounted on the mechanism assembly 1 with screws. The support assembly 5 is fixedly mounted in the inner cavity of the constant temperature shaker. The mechanism assembly 1 is movably connected to the horizontal limiting rocker arm 3, and the rocking plate 2 is movably connected to the horizontal limiting rocker arm 3. The upper end of the vertical limiting rocker arm 4 is fixedly mounted on the support assembly 5 with screws, and the lower end of the vertical limiting rocker arm 4 is fixedly mounted behind the rocking plate 2 with screws. The horizontal limiting rocker arm 3 is for horizontal limiting, and the vertical limiting rocker arm 4 is for vertical limiting.

[0028] Specifically, such as Figures 3-4 As shown, the movement assembly 1 includes a base plate 11, a lower bearing seat 12, an eccentric shaft 13, a motor 14, and an upper bearing seat 15. The lower bearing seat 12 is fixedly mounted on the base plate 11 by screws, the eccentric shaft 13 is rotatably mounted on the lower bearing seat 12, the motor 14 is rotatably mounted on the lower end of the eccentric shaft 13, and the upper bearing seat 15 is rotatably mounted on the upper end of the eccentric shaft 13.

[0029] The working principle of the mechanism assembly 1 is as follows: After the motor 14 is powered on, it drives the eccentric shaft 13 to rotate. At this time, the lower end of the eccentric shaft 13 performs a constant circular motion, while the upper end of the eccentric shaft 13 performs an eccentric / centrifugal motion with the lower end as the center. The upper end of the eccentric shaft 13 drives the upper bearing seat 15 to perform an eccentric motion. Simultaneously, without a limit mechanism, the upper bearing seat 15 can rotate under the action of the bearing inside. The rocker plate 2 is mounted on the upper bearing seat 15 with screws. The rocker plate 2 moves eccentrically with the upper bearing seat 15 and can also swing horizontally.

[0030] like Figure 5 As shown, the horizontal limiting rocker arm 3 includes a connecting plate 31, a pair of transverse rocker arms 32, and a pair of longitudinal rocker arms 33; the mechanism assembly 1 is rotatably connected to the connecting plate 31 through the transverse rocker arms 32, while the rocker plate 2 is rotatably connected to the connecting plate 31 through the longitudinal rocker arms 33.

[0031] The left end bearing hole of the transverse rocker arm 32 is movably connected to two rotating shafts at the bottom of the connecting plate 31, and the rear end bearing hole of the longitudinal rocker arm 33 is movably connected to two rotating shafts at the top of the connecting plate 31. The lower end rotating shafts of the two transverse rocker arms 32 are installed in the limiting groove of the movement assembly 1, and the upper end rotating shafts of the two longitudinal rocker arms 33 are fixedly installed in the limiting groove at the bottom of the rocker plate 2.

[0032] When the movement assembly 1 is working, the rocker plate 2 makes an eccentric motion. Because there is a horizontal limit rocker arm 3 in the horizontal direction to limit it, the rocker plate 2 cannot rotate on its own and keeps making a constant eccentric oscillating motion.

[0033] like Figure 6 As shown, the vertical limiting swing arm 4 includes a connecting rod 41 and a pair of fisheye bearings 42. The fisheye bearings 42 are fixed to the upper and lower ends of the connecting rod 41 by threads respectively. The upper fisheye bearing 42 is fixedly installed on the bracket assembly 5 by screws, and the lower fisheye bearing 42 is fixedly installed behind the rocker plate 2 by screws.

[0034] When the movement assembly 1 is working, the rocker plate 2 makes an eccentric motion, the upper fisheye bearing 42 makes a back-and-forth reciprocating rotation, and the lower fisheye bearing 42 makes an eccentric circular motion with the rocker plate 2. Its motion trajectory is a continuous and complete circle.

[0035] The vertical limiting lever 4 mainly serves as a vertical upper limit to compensate for the insufficient horizontal upper limit of the horizontal limiting lever 3. This cantilevered limiting structure, combining the two limiting structures, makes the rocker 2 run more smoothly and with lower noise.

[0036] The working principle and process of the cantilever limiting structure of this utility model are briefly described below.

[0037] 1. The cantilevered limiting structure differs from the traditional swing arm limiting structure. The limiting structure is connected to the machine through a bracket, instead of being directly fixed to the core components. This increases the spatial size of the limiting structure, lengthens the lever arm, reduces wear at the joints of the limiting structure, makes the machine run more smoothly, and extends its service life.

[0038] 2. Fisheye bearing limit: The fisheye bearing is a type of spherical bearing in which the shaft can rotate around the center line at a certain angle and can withstand a large radial load. This limit method can ensure that the running trajectory of the rocker is more accurate.

[0039] 3. Two-way limiters operate in parallel, with limits in both the horizontal and vertical directions, ensuring the accuracy and stability of the limiters.

[0040] 4. Thermostatic shaker with cantilevered limiting structure: The application of this innovative limiting structure in the thermostatic shaker breaks through the traditional thermostatic shaker structure, making the running trajectory of the thermostatic shaker more accurate.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cantilevered limiting structure, characterized in that, include: Movement assembly (1), rocker (2) and support assembly (5); The mechanism assembly (1) and the bracket assembly (5) are respectively fixed in the inner cavity of the constant temperature shaker, and the rocking plate (2) is installed on the mechanism assembly (1). The rocking plate (2) and the mechanism assembly (1) are movably connected by a horizontal limiting swing rod (3), and the rocking plate (2) and the bracket assembly (5) are movably connected by a vertical limiting swing rod (4). The horizontal limiting rocker arm (3) includes a connecting plate (31), a pair of transverse rocker arms (32), and a pair of longitudinal rocker arms (33). The mechanism assembly (1) is rotatably connected to the connecting plate (31) through the transverse rocker arms (32), and the rocker plate (2) is rotatably connected to the connecting plate (31) through the longitudinal rocker arms (33). The mechanism assembly (1) includes a base plate (11), an eccentric shaft (13), and a motor (14). When the motor (14) is powered on, it drives the eccentric shaft (13) to rotate, so that the rocker plate (2) moves eccentrically with the upper bearing seat (15).

2. The cantilevered limiting structure according to claim 1, characterized in that, The mechanism assembly (1) further includes a lower bearing seat (12) and an upper bearing seat (15); the lower bearing seat (12) is fixedly mounted on the base plate (11), the eccentric shaft (13) is rotatably mounted on the lower bearing seat (12), the motor (14) is rotatably mounted on the lower end of the eccentric shaft (13), and the upper bearing seat (15) is rotatably mounted on the upper end of the eccentric shaft (13); the rocker plate (2) is mounted on the upper bearing seat (15).

3. The cantilevered limiting structure according to claim 1, characterized in that, The left end bearing hole of the horizontal swing rod (32) is movably connected to the two rotating shafts at the bottom of the connecting plate (31), and the rear end bearing hole of the longitudinal swing rod (33) is movably connected to the two rotating shafts at the top of the connecting plate (31).

4. The cantilevered limiting structure according to claim 1, characterized in that, The lower ends of the two horizontal rocker arms (32) are mounted in the limiting groove of the movement assembly (1), and the upper ends of the two vertical rocker arms (33) are fixedly mounted in the limiting groove at the bottom of the rocker plate (2).

5. The cantilevered limiting structure according to claim 1, characterized in that, The upper end of the vertical limiting swing rod (4) is mounted on the bracket assembly (5) by screws, and the lower end of the vertical limiting swing rod (4) is mounted behind the rocker plate (2) by screws.

6. The cantilevered limiting structure according to claim 5, characterized in that, The vertical limiting swing arm (4) includes a connecting rod (41) and a pair of fisheye bearings (42), which are fixed to the upper and lower ends of the connecting rod (41) by threads respectively.

7. The cantilevered limiting structure according to claim 6, characterized in that, The upper fisheye bearing (42) is fixedly mounted on the bracket assembly (5) by screws, and the lower fisheye bearing (42) is fixedly mounted behind the rocker plate (2) by screws.

8. The cantilevered limiting structure according to claim 1, characterized in that, The horizontal limiting lever (3) is for horizontal limiting, and the vertical limiting lever (4) is for vertical limiting.

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