A yaw type transmission structure and a spraying machine adopting the same

Abstract

The utility model discloses a kind of eccentric swing type transmission structures, including shell, power input shaft, inclined boss, connecting rod, rotating shaft, power output piston, the inclined boss is fixed in shell, power input shaft passes through inclined boss, one end is connected with rotating shaft, the one end of the connecting rod is connected with the one end of rotating shaft, the other end is connected with power output piston;Power input shaft drives rotating shaft to rotate with inclined boss surface, rotating shaft rotates with inclined boss surface, its end portion changes with rotating up and down position, and then power output piston is moved up and down by connecting rod, power output piston is provided with power output shaft on it.The utility model also discloses a spraying machine.The utility model uses eccentric swing type transmission structure, solve the existing structure and plunger pump associated eccentric shaft stress as cantilever, the problem of bad stress, ensure accuracy, with the advantages of high output pressure, large flow, long service life, manufacturing and maintenance are convenient.

Description

Technical Field

[0001] This utility model relates to the field of spraying machine transmission technology, and in particular to an oscillating transmission structure and a spraying machine using the structure. Background Technology

[0002] A spray painting machine is a specialized coating equipment that utilizes spray painting technology. The transmission structure is a crucial part of a spray painting machine. Traditional axial piston pumps typically use an electric motor that drives an eccentric wheel via a gear transmission mechanism. The eccentric shaft on the eccentric wheel is connected to the piston of the axial piston pump via a connecting rod. The rotation of the electric motor is converted into the reciprocating motion of the piston, achieving the liquid pressure delivery of the pump. However, the traditional axial piston pump structure suffers from an unreasonable design, where the eccentric shaft connected to the pump experiences cantilevered stress. When conveying high-viscosity liquids, the stress on the eccentric shaft increases, making it prone to deformation, jamming, and in severe cases, rendering the axial piston pump unusable. Therefore, a new structure is needed to address the shortcomings of the existing design. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned in the background art and to provide an oscillating transmission structure and a spraying machine using the structure.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A yaw transmission structure includes a housing, a power input shaft, a slanted boss, a connecting rod, a rotating shaft, and a power output piston. The slanted boss is fixed inside the housing. The power input shaft passes through the slanted boss and is connected at one end to the rotating shaft. One end of the connecting rod is connected to one end of the rotating shaft, and the other end is connected to the power output piston. The power input shaft drives the rotating shaft to rotate in contact with the surface of the slanted boss. As the rotating shaft rotates in contact with the surface of the slanted boss, the position of its end changes up and down with the rotation, thereby driving the power output piston to move up and down through the connecting rod. A power output shaft is provided on the power output piston.

[0005] In the aforementioned oscillating transmission structure, the end of the power input shaft is provided with a mounting groove, and the rotating shaft is provided with a connecting groove. The rotating shaft is installed in the mounting groove of the power output shaft through the connecting groove, and the rotating shaft and the power output shaft are connected by a pivot pin.

[0006] In the aforementioned oscillating transmission structure, rolling bearings are respectively provided at both ends of the rotating shaft, and the rotating shaft rotates in contact with the surface of the inclined boss through the rolling bearings.

[0007] In the aforementioned oscillating transmission structure, universal joints are provided at both ends of the connecting rod that connect to the rotating shaft and the power output piston for connection.

[0008] In the aforementioned oscillating transmission structure, the rotating shaft and the power output piston are respectively provided with joint holes for installing universal joint connectors, and the universal joint connectors and the joint holes are connected by locating pins.

[0009] In one of the above-mentioned oscillating transmission structures, a positioning bearing that mates with an inclined boss is installed on the power input shaft.

[0010] In the aforementioned oscillating transmission structure, a piston chamber is provided in the housing, which is used to position the reciprocating motion of the power output piston.

[0011] In the aforementioned oscillating transmission structure, the housing consists of two parts, including an upper housing and a lower housing, with the piston chamber disposed in the lower housing.

[0012] This utility model also provides a spraying machine, including a plunger device and the above-mentioned oscillating transmission structure. The piston rod in the plunger device is connected to the power output shaft in the oscillating transmission structure via a coupling. The power input shaft in the oscillating transmission structure is connected to the motor power shaft in the spraying machine via a coupling.

[0013] The advantages of this utility model: This utility model adopts an eccentric transmission structure, which solves the problem that the eccentric shaft connected to the plunger pump in the existing structure is cantilevered and has poor force distribution, thus ensuring accuracy. It has the advantages of high output pressure, large flow rate, long service life, and convenient manufacturing and maintenance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the connection between the spraying machine and the oscillating transmission structure in this utility model.

[0016] Figure 2 This is a cross-sectional schematic diagram of the oscillating transmission structure in this utility model; Figure 3 This is an exploded structural diagram of the oscillating transmission structure in this utility model. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0019] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0022] Please see Figure 1The present invention provides a spraying machine, including a plunger device 19 and an oscillating transmission structure 21. The piston rod 20 in the plunger device 19 is connected to the power output shaft 7 in the oscillating transmission structure via a coupling 17. The power input shaft 2 in the oscillating transmission structure 21 is connected to the motor power shaft in the spraying machine via a coupling.

[0023] Please see Figure 2 , Figure 3 A yaw transmission structure includes a housing 1, a power input shaft 2, an inclined boss 3, a connecting rod 4, a rotating shaft 5, and a power output piston 6. The inclined boss 3 is fixed inside the housing 1. The power input shaft 2 passes through the inclined boss 3 and is connected at one end to the rotating shaft 5. One end of the connecting rod 4 is connected to one end of the rotating shaft 5, and the other end is connected to the power output piston 6. The power input shaft 2 drives the rotating shaft 5 to rotate in contact with the surface of the inclined boss 3. As the rotating shaft 5 rotates in contact with the surface of the inclined boss 3, the position of its end changes up and down with the rotation, which in turn drives the power output piston 6 to move up and down through the connecting rod 4. A power output shaft 7 is provided on the power output piston 6.

[0024] Furthermore, in order to facilitate the fitting of the power input shaft 2 and the rotating shaft 5, the end of the power input shaft 2 is provided with a mounting groove 8, and the rotating shaft 5 is provided with a connecting groove 9. The rotating shaft 5 is installed in the mounting groove 8 of the power output shaft 7 through the connecting groove 9, and the rotating shaft 5 and the power output shaft 7 are connected by a pivot pin 10.

[0025] Furthermore, in order to ensure reliable operation and reduce friction, rolling bearings 11 are respectively provided at both ends of the rotating shaft 5, and the rotating shaft 5 rotates in contact with the surface of the inclined boss 3 through the rolling bearings 11.

[0026] Furthermore, universal joints 12 are respectively provided at both ends of the connecting rod 4 that connect to the rotating shaft 5 and the power output piston 6. The universal joints 12 at both ends of the connecting rod 4 ensure the transmission and conversion of rotational power.

[0027] Furthermore, the rotating shaft 5 and the power output piston 6 are respectively provided with connector holes 13 for installing universal joint connectors 12, and the universal joint connectors 12 and connector holes 13 are connected by positioning pins 14.

[0028] Furthermore, a positioning bearing 15 that mates with the inclined boss 3 is installed on the power input shaft 2. The positioning bearing 15 can not only position the installation connection between the power input shaft 2 and the inclined boss 3, but also position the rolling bearing 11 at the end of the rotating shaft 5 to keep in contact with the surface of the inclined boss 3 for rotation.

[0029] Furthermore, a piston chamber 16 is provided in the housing 1, which is used to position the reciprocating motion of the power output piston 6.

[0030] Furthermore, for ease of installation and connection, the housing 1 is composed of two parts, including an upper housing 1-1 and a lower housing 1-2. Preferably, the piston chamber 16 is disposed in the lower housing 1-2.

[0031] The working principle of this utility model is as follows: When the motor shaft of the spraying machine starts to rotate, the power input shaft 2 is connected to the motor shaft of the motor through a coupling. Therefore, the power input shaft 2 will also rotate. Since the rotating shaft 5 is parallel to the inclined boss 3, when the power input shaft 2 drives the rotating shaft 5 to rotate, it will drive the rolling bearings 11 at both ends of the rotating shaft 5 to make a circular motion along the plane of the inclined boss 3. Since the rotating shaft 5 moves around the inclined boss 3, there will be a certain height difference at the end of the rotating shaft 5. This height difference will be transmitted to the power output piston 6 through the connecting rod 4, so the power output piston 6 will move up and down reciprocally. The power output piston 6 is connected to the power output shaft 7. Therefore, the up and down reciprocating motion of the power output piston 6 will drive the up and down reciprocating motion of the power output shaft 7, thereby providing power to the connected spraying machine device.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the patent protection scope of this utility model should be determined by the appended claims.

Claims

1. A yaw transmission structure, characterized in that: The device includes a housing (1), a power input shaft (2), a slanted boss (3), a connecting rod (4), a rotating shaft (5), and a power output piston (6). The slanted boss (3) is fixed inside the housing (1). The power input shaft (2) passes through the slanted boss (3) and is connected at one end to the rotating shaft (5). One end of the connecting rod (4) is connected to one end of the rotating shaft (5), and the other end is connected to the power output piston (6). The power input shaft (2) drives the rotating shaft (5) to rotate against the surface of the slanted boss (3). The rotating shaft (5) rotates against the surface of the slanted boss (3), and its end changes position up and down as it rotates. This causes the power output piston (6) to move up and down through the connecting rod (4). A power output shaft (7) is provided on the power output piston (6).

2. The oscillating transmission structure according to claim 1, characterized in that: The power input shaft (2) has an installation groove (8) at its end, and the rotating shaft (5) has a connecting groove (9). The rotating shaft (5) is installed in the installation groove (8) of the power output shaft (7) through the connecting groove (9). The rotating shaft (5) and the power output shaft (7) are connected by a pivot pin (10).

3. The oscillating transmission structure according to claim 1 or 2, characterized in that: Rolling bearings (11) are provided at both ends of the rotating shaft (5), and the rotating shaft (5) rotates in contact with the surface of the inclined boss (3) through the rolling bearings (11).

4. The oscillating transmission structure according to claim 1, characterized in that: Universal joints (12) are provided at both ends of the connecting rod (4) and the shaft (5) and the power output piston (6) for connection.

5. The oscillating transmission structure according to claim 4, characterized in that: The rotating shaft (5) and the power output piston (6) are respectively provided with connector holes (13) for installing universal joint connectors (12), and the universal joint connectors (12) and connector holes (13) are connected by positioning pins (14).

6. The oscillating transmission structure according to claim 1, characterized in that: The power input shaft (2) is equipped with a positioning bearing (15) that mates with the inclined boss (3).

7. The oscillating transmission structure according to claim 1, characterized in that: The housing (1) is provided with a piston chamber (16), which is used to position the reciprocating motion of the power output piston (6).

8. A yaw transmission structure according to claim 1 or 7, characterized in that: The housing (1) consists of two parts, including an upper housing (1-1) and a lower housing (1-2), with the piston chamber (16) disposed in the lower housing (1-2).

9. A spraying machine, comprising a plunger device (19), characterized in that: The device includes the oscillating transmission structure (21) according to any one of claims 1 to 8, wherein the piston rod (20) in the plunger device (19) is connected to the power output shaft (7) in the oscillating transmission structure via a coupling (17), and the power input shaft (2) in the oscillating transmission structure (21) is connected to the motor power shaft in the spraying machine via a coupling.

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