Piston connecting rod device of air compressor

Abstract

The utility model discloses a piston connecting rod device of an air compressor, which belongs to the technical field of air compressor parts, and comprises a piston main body and a connecting rod, the piston main body is fixedly connected with the connecting rod, the connecting rod comprises a connecting rod small end, a cylinder and a connecting rod big end, the connecting rod small end is provided with a threaded hole, the top end of the piston main body is provided with a bolt hole, and the cylinder is connected with the connecting rod big end. A groove is formed in the bottom end of the piston body and matched with the connecting rod small end, and the connecting rod small end is fixedly connected with the piston body through a bolt. According to the piston connecting rod device of the air compressor adopting the structure, the connecting rod small end is fixedly connected with the piston main body through the bolt, compared with a traditional connecting mode, parts such as a piston pin, a shaft sleeve / bearing bush / bearing and the like are reduced, and the cost and friction among multiple parts are reduced; linear motion of the connecting rod drives the piston body to move, and the problems that the piston deviates from the center and abrades the air cylinder in motion are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor components, in particular to a piston connecting rod device of an air compressor. Background Art

[0002] An air compressor is a device used to compress gas, and most air compressors are reciprocating piston type. In the known technology, the existing air compressor mainly adopts a piston connecting rod mechanism. The connecting rod connects the crankshaft and the piston to convert the rotational motion of the curve into the linear motion of the piston. When the connecting rod is connected to the piston body, the piston pin seat is located on both sides of the center of the piston body, and the small end of the connecting rod is located in the center of the piston body, and then connected by a piston pin to form a piston connecting rod mechanism. However, due to its structural limitations, its structural design is unreasonable. Since the piston pin seat is located on both sides of the piston body, the top of the center of the piston is thin and has low strength, and there is a great potential risk of breakage in actual application. In addition, in a straight clam line piston air compressor, the movement of the connecting rod drives the movement of the piston. The piston connecting rod mechanism composed of a piston pin connection is easy to deviate from the center during movement, wear the cylinder, and affect the use of the air compressor. Therefore, it is necessary to study a piston rod connection device for an air compressor to solve the above problems. Utility Model Content

[0003] The utility model aims to provide a piston connecting rod device of an air compressor, in which a small connecting rod head and a piston main body are fixedly connected by bolts, and when the linear motion of the connecting rod drives the piston main body to move, the problem of the piston main body deviating from the center and wearing the cylinder during the piston movement is avoided.

[0004] To achieve the above-mentioned purpose, the utility model provides a piston-connecting rod device of an air compressor, including a piston body and a connecting rod, the piston body is fixedly connected to the connecting rod, the connecting rod includes a connecting rod small head, a cylinder and a connecting rod large head, a threaded hole is arranged on the connecting rod small head, a bolt hole is arranged on the top of the piston body, a groove is arranged inside the bottom end of the piston body, the groove matches the connecting rod small head, and the connecting rod small head is fixedly connected to the piston body by bolts.

[0005] Preferably, the connecting rod small end is shaped as a cylinder, a cube, a cuboid or a polygon.

[0006] Preferably, one side of the big end of the connecting rod is fixedly connected to one side of the column, and the other side of the column is fixedly connected to the small end of the connecting rod.

[0007] Preferably, the column is symmetrically arranged on both sides of the connecting rod big end, one side of the column is fixedly connected to the connecting rod big end, and the other side of the column is fixedly connected to the connecting rod small end.

[0008] Therefore, the utility model adopts the piston connecting rod device of an air compressor with the above structure, which has the following beneficial effects:

[0009] (1) The connecting rod head is fixedly connected to the piston body by bolts. Compared with the traditional connection method, it reduces the number of parts such as piston pins, sleeves / bearings / bearings, reduces costs and reduces friction between multiple parts;

[0010] (2) When the linear motion of the connecting rod drives the piston body to move, the problem of the piston deviating from the center and wearing the cylinder is avoided, thereby improving the performance of the air compressor.

[0011] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of a piston-connecting rod device embodiment 1 of an air compressor of the utility model;

[0013] Figure 2 It is a top view of a piston connecting rod device embodiment 1 of an air compressor of the utility model;

[0014] Figure 3 This is a structural schematic diagram of a piston connecting rod device embodiment 1 of an air compressor of the utility model;

[0015] Figure 4 It is a side view of a piston connecting rod device embodiment 1 of an air compressor of the utility model;

[0016] Figure 5 This is a schematic diagram of the overall structure of a piston-connecting rod device embodiment 2 of an air compressor of the utility model;

[0017] Reference numerals

[0018] 1. Piston body; 11. Groove; 12. Bolt hole; 2. Connecting rod; 21. Big end of connecting rod; 22. Cylinder; 23. Small end of connecting rod; 24. Threaded hole; 3. Bolt. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Example 1

[0022] Reference Figure 1-4 A piston connecting rod device of an air compressor includes a piston body 1 and a connecting rod 2, wherein the connecting rod 2 is a split type and an integral type. The piston body 1 is fixedly connected to the connecting rod 2, and the connecting rod 2 drives the piston body 1 to move, and the movement directions of the piston body 1 and the connecting rod 2 are consistent. The connecting rod 2 includes a small connecting rod head 23, a column 22, and a large connecting rod head 21. One side of the large connecting rod head 21 is fixedly connected to one side of the column 22, and the other side of the column 22 is fixedly connected to the small connecting rod head 23. A threaded hole 24 is provided on the small connecting rod head 23, a bolt hole 12 is provided at the top of the piston body 1, and a groove 11 is provided inside the bottom end of the piston body 1. The groove 11 matches the small connecting rod head 23, and the small connecting rod head 23 is directly positioned with the piston body 1 through the groove 11, and then fixedly connected by a bolt 3. The small connecting rod head 23 is set as a cylinder or other shapes.

[0023] The connecting rod 2 is connected to the crankshaft, and converts the rotational motion of the crankshaft into the linear motion of the connecting rod 2. The connecting rod 2 drives the piston body 1 to move, and realizes the up and down reciprocating motion of the piston body 1.

[0024] Example 2

[0025] Reference Figure 5A piston connecting rod device of an air compressor includes a piston body 1 and a connecting rod 2, wherein the connecting rod 2 is a split type and an integral type. The piston body 1 is fixedly connected to the connecting rod 2, and the connecting rod 2 includes a small connecting rod head 23, a column 22 and a large connecting rod head 21, and the column 22 is symmetrically arranged on both sides of the large connecting rod head 21, one side of the column 22 is fixedly connected to the large connecting rod head 21, and the other side of the column 22 is fixedly connected to the small connecting rod head 23. This arrangement of the connecting rod 2 can connect opposing double pistons. A threaded hole 24 is arranged on the small connecting rod head 23, a bolt hole 12 is arranged on the top of the piston body 1, and a groove 11 is arranged inside the bottom end of the piston body 1, and the groove 11 matches the small connecting rod head 23. The small connecting rod head 23 is directly positioned with the piston body 1 through the groove 11, and then fixedly connected by a bolt 3. The small connecting rod head is arranged in a cylindrical shape or other shapes.

[0026] The connecting rod 2 is provided with an opposed piston, and the connecting rod big end 21 is connected to the crankshaft, converting the rotational motion of the crankshaft into the linear motion of the connecting rod 2, so that the piston body 1 can move back and forth. When the connecting rod 2 drives the piston body 1 to move, the two pistons move in the same direction.

[0027] Therefore, the utility model adopts a piston connecting rod device of an air compressor with the above structure, and fixes the small end of the connecting rod to the piston body by bolts. Compared with the traditional connection method, it reduces parts such as piston pins, sleeves / bearings / bearings, reduces costs and friction between multiple parts, and avoids the problem of piston deviation from the center and cylinder wear during movement.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A piston connecting rod device for an air compressor, characterized in that: It includes a piston body and a connecting rod, the piston body is fixedly connected to the connecting rod, the connecting rod includes a small connecting rod head, a column and a large connecting rod head, the small connecting rod head is provided with a threaded hole, the top of the piston body is provided with a bolt hole, the bottom of the piston body is provided with a groove, the groove matches the small connecting rod head, and the small connecting rod head is fixedly connected to the piston body by bolts.

2. The piston-connecting rod device of an air compressor according to claim 1, characterized in that: The connecting rod small end is shaped as a cylinder, a cube, a cuboid or a polygon.

3. The piston connecting rod device of an air compressor according to claim 2, characterized in that: One side of the big end of the connecting rod is fixedly connected to one side of the column, and the other side of the column is fixedly connected to the small end of the connecting rod.

4. The piston connecting rod device of an air compressor according to claim 2, characterized in that: The column is symmetrically arranged on both sides of the connecting rod big end, one side of the column is fixedly connected to the connecting rod big end, and the other side of the column is fixedly connected to the connecting rod small end.

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