Rocking-turn type transmission structure and spraying machine adopting same

Abstract

The invention discloses a rocking-turn type transmission structure which comprises a shell, a power turntable, an outer gear carrier, an inner gear and a driving rod, the power rotating disc is rotationally installed in the shell, the outer gear frame is fixedly connected with the shell, the inner gear is installed on the power rotating disc and can rotate relative to the power rotating disc, and the central axis of the inner gear and the central axis of the power rotating disc are not located on the same straight line and are eccentrically installed; the inner gear and the outer gear carrier are in meshing transmission through gear teeth, a connecting rod is arranged on the inner gear and fixed to the inner gear, the end of the connecting rod is rotationally hinged to a driving rod, and the driving rod penetrates through the shell and is limited to only slide in the direction of the central axis L of the driving rod. The invention further discloses a spraying machine. A swing type transmission structure is adopted, the problem that an eccentric shaft connected with a plunger pump of an existing structure is stressed by a cantilever and is poor in stress is solved, precision is guaranteed, and the swing type plunger pump has the advantages of being high in output pressure, large in flow, long in service life and convenient to manufacture and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of sprayer transmission, in particular to a rocking transmission structure and a sprayer adopting the structure. Background Art

[0002] A sprayer is a specialized coating equipment that utilizes spraying technology. The transmission structure is a crucial component of a sprayer. Traditional axial piston pumps typically utilize an electric motor driving an eccentric wheel through a gear transmission mechanism. The eccentric shaft on the eccentric wheel is connected to the axial piston pump's plunger via a connecting rod. The motor's rotation is converted into reciprocating motion by the plunger pump, achieving pressure delivery of the liquid. Traditional axial piston pumps suffer from an inefficient cantilevered load on the eccentric shaft. This increases the load on the eccentric shaft when pumping high-viscosity liquids, making it susceptible to deformation, seizure, and even failure. Therefore, a new structural improvement is needed to address these existing technical limitations. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems raised in the above background technology and to provide a rocking transmission structure and a sprayer using the structure.

[0004] To achieve the above object, the technical solution of the present invention is: A rocking transmission structure includes a shell, a power turntable, an outer gear frame, an inner gear, and a driving rod; the power turntable is rotatably installed in the shell, the outer gear frame is fixedly connected to the shell, the inner gear is installed on the power turntable, the inner gear can rotate relative to the power turntable, the central axis of the inner gear and the power turntable are not in the same straight line, and are eccentrically installed; the inner gear and the outer gear frame are arranged to engage with each other through the arrangement of gear teeth, a connecting rod is arranged on the inner gear, the connecting rod is fixed on the inner gear, and its end is rotatably hinged to the driving rod, the driving rod passes through the shell and is restricted to slide only along its own central axis L direction; the power turntable drives the inner gear to move around the inner circumference of the outer gear frame, the inner gear rotates, and the end of the connecting rod on it moves back and forth in the direction of the central axis L of the driving rod, and the driving rod is driven to move back and forth in the direction of its central axis L through the connecting rod.

[0005] In the above-mentioned rocking transmission structure, a positioning frame is provided on the shell, and a positioning hole is provided on the positioning frame for the driving rod to pass through. The positioning hole and the driving rod have the same central axis, and the driving rod moves back and forth along its own central axis L direction through the positioning effect of the positioning hole.

[0006] In the above-mentioned rocking transmission structure, a positioning sleeve is provided at the positioning hole. The positioning sleeve and the positioning hole are arranged coaxially, and the driving rod passes through the positioning sleeve.

[0007] In the above-mentioned rocking transmission structure, a rotary bearing is provided between the power turntable and the housing, and the power turntable and the housing are respectively mounted and connected to the inner and outer rings of the rotary bearing.

[0008] In the above-mentioned rocking transmission structure, the power turntable is provided with a plurality of brackets, and the internal gears are rotatably mounted on the brackets.

[0009] In the above-mentioned rocking transmission structure, the power turntable is rotationally connected to the housing via a rotating shaft, and the rotating shaft is transmission-connected to an external power source.

[0010] In the above-mentioned rocking transmission structure, a crank handle is connected to the rotating shaft.

[0011] In the above-mentioned rocking transmission structure, the outer gear rack is arranged on the side of the power turntable.

[0012] In the above-mentioned rocking transmission structure, a mounting rod is provided on the connecting rod, and a mounting hole is provided at the end of the driving rod. The present invention also provides a sprayer, comprising a plunger device and the above-mentioned rocking transmission structure, wherein a piston rod in the plunger device is transmission-connected to a drive rod in the rocking transmission structure via a coupling.

[0013] Effects of the present invention: The present invention adopts a swing transmission structure, which solves the problem of the existing structure in which the eccentric shaft connected to the plunger pump is cantilevered and poorly stressed, ensures accuracy, and has the advantages of high output pressure, large flow, long service life, and easy manufacturing and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a structural schematic diagram of the connection between the sprayer and the swing-type transmission structure in the present invention; Figure 2 Schematic diagram of the exploded view of the swing transmission structure (including the crank handle) of the present invention; Figure 3 This is an exploded schematic diagram of the swing-type transmission structure (excluding the crank handle) of the present invention; Figure 4 is a three-dimensional schematic diagram of the swing-type transmission structure (including the crank handle) of the present invention; Figure 5It is a three-dimensional schematic diagram of the swing transmission structure (excluding the crank) in the present invention. DETAILED DESCRIPTION

[0016] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0019] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0020] Unless otherwise defined, all technical and scientific terms used in the present description have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used in this description are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used in this description includes any and all combinations of one or more of the associated listed items.

[0021] See also Figure 1 The present invention provides a spraying machine, a spraying machine, including a plunger device 19, including a rocking transmission structure 21, the piston rod 20 in the plunger device 19 is connected to the driving rod in the rocking transmission structure through a coupling 17. See also Figures 2 to 5 , a rocking transmission structure, including a shell 1, a power turntable 2, an outer gear frame 3, an internal gear 4, and a driving rod 5; the power turntable 2 is rotatably installed in the shell 1, the outer gear frame 3 is fixedly connected to the shell 1, the internal gear 4 is installed on the power turntable 2, the internal gear 4 can rotate relative to the power turntable 2, the central axis of the internal gear 4 and the power turntable 2 are not in the same straight line, and are eccentrically installed; the internal gear 4 and the outer gear frame 3 are engaged with each other by setting gear teeth. A connecting rod 6 is provided on the internal gear 4, and the connecting rod 6 is fixed on the internal gear 4, and its end is rotatably hinged with the driving rod 5. The driving rod 5 passes through the shell 1 and is restricted to slide only along its own central axis L direction; the power turntable 2 drives the internal gear 4 to move around the inner circumference of the outer gear frame 3, the internal gear 4 rotates, and the end of the connecting rod 6 on it moves back and forth in the direction of the central axis L of the driving rod 5, and the driving rod 5 is driven to move back and forth in the direction of its central axis L through the connecting rod 6.

[0022] Furthermore, a positioning frame 7 is provided on the shell 1, and a positioning hole 8 is provided on the positioning frame 7 for the driving rod 5 to pass through. The positioning hole 8 and the driving rod 5 are coaxial, and the driving rod 5 moves back and forth along its own central axis L direction through the positioning effect of the positioning hole 8.

[0023] Furthermore, a positioning sleeve 9 is provided at the positioning hole 8. The positioning sleeve 9 is provided coaxially with the positioning hole 8, and the driving rod 5 passes through the positioning sleeve 9. This can better reduce the movement friction of the driving rod 5 and improve its service life.

[0024] Furthermore, in order to better ensure the rotation of the power turntable 2, a rotating bearing 10 is provided between the power turntable 2 and the housing 1, and the power turntable 2 and the housing 1 are respectively installed and connected to the inner and outer rings of the rotating bearing 10.

[0025] Furthermore, the power turntable 2 has a plurality of brackets 11 , and the internal gear 4 is rotatably mounted on the brackets 11 . The power turntable 2 is designed to be lightweight, thereby reducing the loss of driving power.

[0026] Specifically, the power turntable 2 is connected to the housing 1 through a rotating shaft 11, and the rotating shaft 11 is connected to the external power source. Figure 2 In one embodiment, a crank 12 is connected to the rotating shaft 11, which can be driven manually in different occasions and used in various working environments.

[0027] Preferably, the outer gear rack 3 is arranged on the side of the power turntable 2, so that the outer gear rack 3 can provide a certain degree of anti-falling protection for the installation of the power turntable 2, thereby improving the safety of use.

[0028] Furthermore, a mounting rod 13 is provided on the connecting rod 6, and a mounting hole 14 is provided at the end of the driving rod 5, so as to better realize the driving rotation connection.

[0029] The working principle of the present invention is as follows: When the power turntable 2 is driven by power and starts to rotate, the power turntable 2 will drive the internal gear 4 to make a circular motion along the outer gear frame 3. At the same time, the internal gear 4 rotates. When the internal gear 4 rotates, its end moves back and forth in the direction of the central axis L of the driving rod 5, thereby driving the driving rod 5 to move back and forth in the direction of its central axis L through the connecting rod 6. Finally, the reciprocating motion of the driving rod 5 drives the plunger device 19 to work.

[0030] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0031] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of patent protection for the present invention shall be determined by the appended claims.

Claims

1. A rocking transmission structure, characterized in that: The invention comprises a housing (1), a power turntable (2), an outer gear frame (3), an inner gear (4), and a driving rod (5); the power turntable (2) is rotatably mounted in the housing (1), the outer gear frame (3) is fixedly connected to the housing (1), the inner gear (4) is mounted on the power turntable (2), the inner gear (4) can rotate relative to the power turntable (2), and the central axis of the inner gear (4) and the power turntable (2) are not in the same straight line. The eccentric arrangement is installed; the internal gear (4) and the external gear frame (3) are meshed with each other by setting gear teeth for transmission; a connecting rod (6) is provided on the internal gear (4); the connecting rod (6) is fixed on the internal gear (4); the end of the connecting rod (6) is rotatably hinged with the driving rod (5); the driving rod (5) passes through the housing (1) and is restricted to slide only along its own central axis L direction; the power turntable (2) drives the internal gear (4) to move around the inner circumference of the external gear frame (3); the internal gear (4) rotates, and the end of the connecting rod (6) on it reciprocates in the direction of the central axis L of the driving rod (5), and the driving rod (5) is driven to reciprocate in the direction of its central axis L through the connecting rod (6).

2. The rocking transmission structure according to claim 1, characterized in that: The housing (1) is provided with a positioning frame (7), and the positioning frame (7) is provided with a positioning hole (8) for the driving rod (5) to pass through. The positioning hole (8) and the driving rod (5) are coaxial, and the driving rod (5) moves back and forth along the direction of its own central axis L through the positioning effect of the positioning hole (8).

3. The rocking transmission structure according to claim 2, characterized in that: A positioning sleeve (9) is provided at the positioning hole (8), the positioning sleeve (9) and the positioning hole (8) are arranged coaxially, and the driving rod (5) passes through the positioning sleeve (9).

4. The rocking transmission structure according to claim 1, characterized in that: A rotary bearing (10) is provided between the power turntable (2) and the housing (1), and the power turntable (2) and the housing (1) are respectively mounted and connected to the inner and outer rings of the rotary bearing (10).

5. The rocking transmission structure according to claim 1, characterized in that: The power turntable (2) is provided with a plurality of brackets (11), and the internal gear (4) is rotatably mounted on the brackets (11).

6. The rocking transmission structure according to claim 4, characterized in that: The power turntable (2) is rotationally connected to the housing (1) via a rotating shaft (11), and the rotating shaft (11) is transmission-connected to an external power source.

7. The rocking transmission structure according to claim 6, characterized in that: The rotating shaft (11) is connected to a crank (12).

8. The rocking transmission structure according to claim 1, characterized in that: The outer gear rack (3) is arranged on the side of the power turntable (2).

9. The rocking transmission structure according to claim 1, characterized in that: A mounting rod (13) is provided on the connecting rod (6), and a mounting hole (14) is provided at the end of the driving rod (5).

10. A spraying machine comprising a plunger device (19), characterized in that: It comprises the rocking transmission structure (21) according to claims 1 to 9, wherein the piston rod (20) in the plunger device (19) is connected to the driving rod in the rocking transmission structure through a coupling (17).

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