CN215409076U - Symmetrical connecting rod structure - Google Patents
Symmetrical connecting rod structure Download PDFInfo
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- CN215409076U CN215409076U CN202121255283.6U CN202121255283U CN215409076U CN 215409076 U CN215409076 U CN 215409076U CN 202121255283 U CN202121255283 U CN 202121255283U CN 215409076 U CN215409076 U CN 215409076U
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- connecting rod
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- eccentric shaft
- structure according
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Abstract
The utility model discloses a symmetrical connecting rod structure, which comprises a connecting rod, wherein the connecting rod consists of a connecting rod body and connecting rod heads symmetrically arranged at two ends of the connecting rod body; the piston ring is installed and fixed on the installation part of the connecting rod head, the outer ring diameter of the piston ring is larger than that of the installation part, additional alternating torque generated on the connecting rod due to different action points of gas pressure in the cylinder can be reduced or eliminated, the protection of a connecting rod bearing is facilitated, the service life of the connecting rod is prolonged, and the piston ring is simple and practical in structure and easy to manufacture.
Description
Technical Field
The utility model relates to the technical field of compressor connecting rods, in particular to a symmetrical connecting rod structure.
Background
The four-cylinder rotary compressor is a compact rotary cylinder device, and rotating members are compactly installed in axial and radial directions of the device and can rotate around a shaft at a uniform speed, and the rotating members rotate around a crankshaft to enable a connecting rod to linearly reciprocate. However, the connecting rod designed by the existing four-cylinder rotary compressor adopts an asymmetric structure, although the distribution of the cylinders of the compressor can be distributed symmetrically due to the structure of the connecting rod, in the operation process of the compressor, the acting point and the supporting point of the gas pressure in the cylinder on the surface of the pressure plate are not in the same position, so that an additional alternating torque is generated on the connecting rod assembly, the alternating torque can be transmitted to the matching position of the connecting rod bearing, the connecting rod and the bearing start interference assembly, under the action of the torque, the connecting rod bearing can be subjected to the action of shearing stress, the surface of the connecting rod bearing is abraded, and under the condition of reaching a certain abrasion loss, the connecting rod and the bearing can become clearance fit, so that the compressor vibrates, the noise is increased, the operation of the compressor is influenced, and the service life of the connecting rod is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one technical problem in the prior art, and provides a symmetrical connecting rod structure which can reduce or eliminate additional alternating moment generated on the connecting rod due to different action points of gas pressure in a cylinder, is favorable for protecting the connecting rod and prolongs the service life of the connecting rod.
According to a first aspect of the present invention, a symmetrical connecting rod structure is provided, which includes a connecting rod, which is composed of a connecting rod body and connecting rod heads symmetrically arranged at two ends of the connecting rod body, wherein the connecting rod is of a central symmetrical structure, a mounting hole is arranged in the middle of the connecting rod body, a bearing is arranged inside the mounting hole, and a mounting portion is arranged on the surface of the connecting rod head; and the piston ring is installed and fixed on the installation part of the connecting rod head, and the diameter of the outer ring of the piston ring is larger than that of the outer ring of the installation part.
The symmetrical connecting rod structure at least has the following beneficial effects: this embodiment sets up the connecting rod that constitutes central symmetrical structure in the connecting rod head at connecting rod body both ends through the connecting rod body and symmetry, can reduce or eliminate the additional alternating moment that produces the connecting rod because of the difference of gas pressure action point in the cylinder, be favorable to protecting the connecting rod bearing, the life of extension connecting rod, the mounting hole inboard is provided with the bearing and is used for reducing the radial axial force of connecting rod in work, help protecting the connecting rod, the surface of connecting rod head is provided with the installation department, the piston ring installation is fixed in on the installation department of connecting rod head, the piston ring has constituted the piston with the connecting rod head, in addition, the outer diameter of piston ring is greater than the outer diameter of installation department, can help the piston ring to clear away the grease of cylinder inner wall when the activity in the cylinder, prevent the wearing and tearing of connecting rod head, moreover, the steam generator is simple in structure, and easy manufacturing.
According to the symmetrical connecting rod structure in the first aspect of the utility model, the reinforcing ribs are symmetrically arranged on the upper side and the lower side of the joint of the connecting rod body and the connecting rod head. The reinforcing rib is used for enhancing the connection strength of the connecting rod body and the connecting rod head, and is beneficial to protecting the connecting rod and prolonging the service life of the connecting rod.
According to the symmetrical connecting rod structure of the first aspect of the present invention, the connecting rod body and the connecting rod head are of a homogeneous and integral structure, and the connecting positions of the connecting rod body and the connecting rod head are provided with the rounded corners. The connecting rod is of a homogeneous integrated structure, the manufacturing process of the connecting rod can be simplified, the production cost is reduced, the connecting part of the connecting rod body and the connecting rod head is provided with the fillet, stress concentration is reduced, and the service life of the connecting rod is prolonged.
According to the symmetrical connecting rod structure of the first aspect of the utility model, a piston pressing plate is further arranged on one side of the piston ring, and the piston pressing plate is embedded into the piston ring and presses the piston ring onto the connecting rod head through bolt connection. The piston pressure plate is used for fixing the piston ring on the connecting rod head and bearing gas pressure.
According to a symmetrical connecting rod structure of the first aspect of the utility model, the piston ring is provided with a positioning block, and the piston pressure plate is provided with a positioning groove which is installed in cooperation with the positioning block. The positioning block is matched and buckled with the positioning groove, so that the installation and positioning processes of the piston pressing plate and the piston ring can be saved.
According to the symmetrical connecting rod structure in the first aspect of the utility model, the two connecting rods are coaxially and eccentrically installed relative to the axis of the installation hole and are crisscrossed to form the connecting rod assembly, the two connecting rods of the connecting rod assembly are connected through the eccentric shaft, and the two ends of the eccentric shaft are provided with the circular ring bearings which are installed in the installation holes of the connecting rods. The two connecting rods are connected through the eccentric shaft to form the four-cylinder connecting rod assembly, four-stroke compression of the compressor can be achieved, the structure is simple, the size is small, the size of the compressor is reduced, the annular bearings at the two ends of the eccentric shaft are used for reducing abrasion of the connecting rods and the eccentric shaft, and the service life of the connecting rods is prolonged.
According to the symmetrical connecting rod structure of the first aspect of the utility model, the eccentric shaft further comprises an eccentric shaft sleeve, the eccentric shaft sleeve is sleeved on the outer side of the eccentric shaft, and the outer wall of the eccentric shaft sleeve is connected with the bearing. The eccentric shaft sleeve is used for eliminating center distance deviation and common normal line deviation between the connecting rod and the eccentric shaft.
According to the symmetrical connecting rod structure of the first aspect of the utility model, the upper ends of the two ends of the eccentric bearing are provided with the check rings, and the check rings abut against the mounting holes. The retainer ring plays a role in axial fixation.
According to the symmetrical connecting rod structure of the first aspect of the utility model, the gasket is arranged between the retainer ring and the bearing, and the gasket is pressed on the bearing by the retainer ring. The gasket plays the wear-resisting effect of shock attenuation.
According to the symmetrical connecting rod structure in the first aspect of the utility model, the upper end and the lower end of the connecting rod assembly are also provided with the balance blocks, and the balance blocks are movably connected with the connecting rod assembly. The balance block is used for balancing the axial thrust generated during the operation of the compressor, and is beneficial to prolonging the service life of the connecting rod.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a cross-sectional view of a symmetrical connecting rod configuration in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a symmetrical link structure according to an embodiment of the present invention;
FIG. 3 is a force-bearing diagram of a symmetrical link structure according to an embodiment of the present invention;
FIG. 4 is an assembled cross-sectional view of a symmetrical connecting rod arrangement in accordance with an embodiment of the present invention;
FIG. 5 is a three-dimensional view of a symmetrical linkage arrangement according to an embodiment of the present invention;
FIG. 6 is an installation view of the connecting rod assembly;
FIG. 7 is an installed three-dimensional view of the connecting rod assembly.
The reference numbers illustrate:
a connecting rod 100, a connecting rod body 110, a mounting hole 111, a reinforcing rib 112, a connecting rod head 120, a mounting part 121 and a bearing 130;
a piston ring 200, a piston pressure plate 210, a positioning block 211 and a positioning groove 212;
eccentric shaft 300, circular ring bearing 310, eccentric shaft sleeve 320, retainer ring 330, gasket 340 and balance block 350.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 7, an embodiment of the present invention provides a symmetric link structure, including a link 100, which is composed of a link body 110 and link heads 120 symmetrically disposed at two ends of the link body 110, the link 100 is a central symmetric structure, a mounting hole 111 is disposed in the middle of the link body 110, a bearing 130 is disposed inside the mounting hole 111, and a mounting portion 121 is disposed on the surface of the link head 120; the piston ring 200 is fixed to the mounting portion 121 of the connecting rod head 120, and the outer ring diameter of the piston ring 200 is larger than the outer ring diameter of the mounting portion 121. The connecting rod 100 with the central symmetrical structure is formed by the connecting rod body 110 and the connecting rod heads 120 symmetrically arranged at two ends of the connecting rod body 110, so that additional alternating torque generated on the connecting rod 100 due to different action points of gas pressure in a cylinder can be reduced or eliminated, the protection of the bearing 130 of the connecting rod 100 is facilitated, the service life of the connecting rod 100 is prolonged, the bearing 130 is arranged on the inner side of the mounting hole 111 and used for reducing the radial axial force of the connecting rod 100 in the working process, the protection of the connecting rod 100 is facilitated, the mounting part 121 is arranged on the surface of the connecting rod head 120, the piston ring 200 is mounted and fixed on the mounting part 121 of the connecting rod head 120, the piston ring 200 and the connecting rod head 120 form a piston, in addition, the outer ring diameter of the piston ring 200 is larger than the outer ring diameter of the mounting part 121, the oil stain on the inner wall of the cylinder can be removed when the piston ring 200 moves in the cylinder, the abrasion of the connecting rod head 120 is prevented, the structure is simple and practical, and the connecting rod 100 is easy to manufacture.
Further, a piston pressing plate 210 is further disposed on one side of the piston ring 200, and the piston pressing plate 210 is embedded into the piston ring 200 and presses the piston ring 200 against the connecting rod head 120 through a bolt connection, so as to fix the piston ring 200 to the connecting rod head 120 and bear gas pressure.
Further, the upper side and the lower side of the joint of the connecting rod body 110 and the connecting rod head 120 are symmetrically provided with the reinforcing ribs 112 for enhancing the connecting strength of the connecting rod body 110 and the connecting rod head 120, which is helpful for protecting the connecting rod 100 and prolonging the service life of the connecting rod 100.
Further, the connecting rod body 110 and the connecting rod head 120 are of a homogeneous structure, the homogeneous structure can simplify the manufacturing process of the connecting rod 100, and reduce the production cost, and the connecting positions of the connecting rod body 110 and the connecting rod head 120 are provided with the rounded corners, which are beneficial to reducing stress concentration and prolonging the service life of the connecting rod 100.
Further, the piston ring 200 is provided with a positioning block 211, the piston pressing plate 210 is provided with a positioning groove 212 which is installed in a matched manner with the positioning block 211, and the positioning block 211 and the positioning groove 212 are matched and buckled, so that the installation and positioning processes of the piston pressing plate 210 and the piston ring 200 can be saved.
As shown in fig. 4 and 7, the two connecting rods 100 are coaxially and eccentrically installed with respect to the axis of the installation hole 111 and are crisscrossed to form a connecting rod assembly, the two connecting rods 100 of the connecting rod assembly are connected by an eccentric shaft 300, ring bearings 310 are disposed at both ends of the eccentric shaft 300, the ring bearings 310 are installed in the installation holes 111 of the connecting rods 100, so that four-stroke compression of the compressor can be realized, the structure is simple, the size is small, and the size of the compressor can be reduced, and the ring bearings 310 at both ends of the eccentric shaft 300 are used for reducing abrasion between the connecting rods 100 and the eccentric shaft 300, so that the service life of the connecting rods 100 can be prolonged.
Further, the eccentric shaft 300 further includes an eccentric sleeve 320, the eccentric sleeve 320 is sleeved outside the eccentric shaft 300, and an outer wall of the eccentric sleeve 320 is connected to the bearing 130 for eliminating a center distance deviation and a common normal line deviation between the connecting rod 100 and the eccentric shaft 300.
Furthermore, the upper ends of the two ends of the eccentric bearing 320 are provided with retaining rings 330, and the retaining rings 330 abut against the mounting hole 111 to play a role of axial fixation.
Further, a gasket 340 is arranged between the retainer ring 330 and the bearing 130, and the gasket 340 is pressed on the bearing 130 by the retainer ring 330 to play a role in shock absorption and wear resistance.
Further, the upper and lower ends of the connecting rod 100 assembly are further provided with balance weights 350, and the balance weights 350 are movably connected with the connecting rod 100 assembly and used for balancing the axial thrust generated during the operation of the compressor, which is beneficial to prolonging the service life of the connecting rod 100.
As shown in fig. 3, fig. 3 is a schematic diagram of the stress of the connecting rod 100, when one end of the connecting rod 100 exhausts, a force F1 is generated, and when the other end of the connecting rod 100 inhales, a force F2 is generated, because the symmetrical design of the connecting rod 100 enables the gas in the cylinder to have the same action point at the connecting rod 100 assembly, the centroid position is consistent with the supporting position, and F1 and F2 are offset equivalently, so that the alternating moment is eliminated, the connecting rod 100 is protected, the service life of the connecting rod 100 is effectively prolonged, and the normal operation of the compressor is ensured.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A symmetrical connecting rod arrangement, comprising:
the connecting rod (100) is composed of a connecting rod body (110) and connecting rod heads (120) symmetrically arranged at two ends of the connecting rod body (100), the connecting rod (100) is of a central symmetrical structure, a mounting hole (111) is formed in the middle of the connecting rod body (110), a bearing (130) is arranged on the inner side of the mounting hole (111), the connecting rod head (120) is a cylinder, and a convex mounting part (121) is arranged on the surface of the connecting rod head (120);
and the piston ring (200) is fixedly arranged on the mounting part (121) of the connecting rod head (120), and the diameter of the outer ring of the piston ring (200) is larger than that of the outer ring of the mounting part (121).
2. A symmetrical connecting rod structure according to claim 1, wherein: reinforcing ribs (112) are symmetrically arranged on the upper side and the lower side of the joint of the connecting rod (100) body and the connecting rod head (120).
3. A symmetrical connecting rod structure according to claim 1, wherein: the connecting rod (100) body and the connecting rod head (120) are of a homogeneous integrated structure, and fillets are arranged at the connecting positions of the connecting rod (100) body and the connecting rod head (120).
4. A symmetrical connecting rod structure according to claim 1, wherein: and a piston pressing plate (210) is further arranged on one side of the piston ring (200), and the piston pressing plate (210) is embedded into the piston ring (200) and presses the piston ring (200) onto the connecting rod head (120) through bolt connection.
5. A symmetrical connecting rod structure according to claim 4, wherein: the piston ring (200) is provided with a positioning block, and the piston pressing plate (210) is provided with a positioning groove matched with the positioning block.
6. A symmetrical connecting rod structure according to claim 1, wherein: the two connecting rods (100) are coaxially and eccentrically installed relative to the axis of the installation hole (111) and are crosswise installed to form a connecting rod assembly, the two connecting rods (100) of the connecting rod assembly are connected through an eccentric shaft (300), two ends of the eccentric shaft (300) are provided with circular ring bearings (310), and the circular ring bearings (310) are installed in the installation hole (111) of the connecting rod (100).
7. A symmetrical connecting rod structure according to claim 6, wherein: the eccentric shaft (300) further comprises an eccentric shaft sleeve (320), the eccentric shaft sleeve (320) is sleeved on the outer side of the eccentric shaft (300), and the outer wall of the eccentric shaft sleeve (320) is connected with the bearing (130).
8. A symmetrical connecting rod structure according to claim 7, wherein: and the upper ends of the two ends of the eccentric shaft (300) bearing are provided with retaining rings (330), and the retaining rings (330) are abutted to the mounting hole (111).
9. A symmetrical connecting rod structure according to claim 8, wherein: a gasket (340) is arranged between the retainer ring (330) and the bearing (130), and the gasket (340) is pressed on the bearing (130) by the retainer ring (330).
10. A symmetrical connecting rod structure according to claim 6, wherein: the upper end and the lower end of the connecting rod component are also provided with balance blocks (350), and the balance blocks (350) are movably connected with the connecting rod (100) component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121255283.6U CN215409076U (en) | 2021-06-04 | 2021-06-04 | Symmetrical connecting rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121255283.6U CN215409076U (en) | 2021-06-04 | 2021-06-04 | Symmetrical connecting rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215409076U true CN215409076U (en) | 2022-01-04 |
Family
ID=79679271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121255283.6U Active CN215409076U (en) | 2021-06-04 | 2021-06-04 | Symmetrical connecting rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215409076U (en) |
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2021
- 2021-06-04 CN CN202121255283.6U patent/CN215409076U/en active Active
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