Combined piston connecting rod bearing

Abstract

The utility model relates to the technical field of piston connecting rods, and discloses a combined piston connecting rod bearing which comprises a piston connecting rod, a connecting rod upper cover is arranged at the bottom of the piston connecting rod, a connecting rod lower cover is arranged at the bottom of the connecting rod upper cover, and the connecting rod upper cover and the connecting rod lower cover are connected through a connecting bolt. An integrated bearing sealing cover is arranged on the inner side wall of the connecting rod upper cover and the inner side wall of the connecting rod lower cover. The integrated bearing sealing cover is characterized in that a sealing cover body is arranged on the inner side wall of the connecting rod upper cover and the inner side wall of the connecting rod lower cover; the outer sealing ring is fixedly connected to the outer side wall of the sealing cover body; by arranging the integrated bearing sealing cover, the connecting rod and the bearing are combined together through the integrated bearing sealing cover, the connecting rod and the bearing are sealed and blocked through the integrated bearing sealing cover, the sealing performance of bearing connection can be improved, and the integrated bearing sealing cover has elasticity and can buffer stress of the bearing; the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of piston connecting rods, in particular to a combined piston connecting rod bearing. Background Art

[0002] The piston connecting rod is mainly a transmission component of a compressor and an electric motor, etc. The crankshaft cooperates with multiple piston connecting rods to achieve pressure conduction. In the prior art (the announcement number is CN219932379U, which proposes a piston connecting rod), it includes a connecting rod body, one end of which is provided with a mounting hole, the other end of which is provided with a fixing hoop, a plug-in hole coaxially arranged with the crankshaft is provided between the fixing hoop and the connecting rod body, plug-ins are provided on both sides of the connecting rod body, locking holes are provided at both ends of the fixing hoop, the locking holes are coaxially arranged with the plug-ins, the locking holes are composed of a threaded hole and a limiting hole close to the connecting rod body, the inner diameter of the limiting hole is the same as the inner diameter of the plug-in hole, a locking bolt is inserted in the plug-in hole, and the outer wall of the locking bolt is integrally formed with a limiting ring that is respectively plugged and matched with the plug-in hole and the locking hole, and the outer diameter of the limiting ring is the same as the inner diameter of the plug-in hole.

[0003] The existing technology combines the piston and the bearing together to improve the firmness of the fixation, but the upper and lower covers of the bearing and the connecting rod are directly clamped, the sealing between them is poor, and the force of the connecting rod is directly transmitted to the bearing, which reduces the service life of the bearing. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a combined piston-connecting rod bearing, which has the advantages of improved sealing and increased service life, and solves the problem that the upper and lower covers of the bearing and the connecting rod are directly connected, resulting in poor sealing, and the force of the connecting rod is directly transmitted to the bearing, thereby reducing the service life of the bearing.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solution: a combined piston-connecting rod bearing, comprising a piston-connecting rod, a connecting rod upper cover is provided at the bottom of the piston-connecting rod, a connecting rod lower cover is provided at the bottom of the connecting rod upper cover, and the connecting rod upper cover and the connecting rod lower cover are connected by connecting bolts;

[0008] The inner side walls of the connecting rod upper cover and the connecting rod lower cover are provided with an integrated bearing sealing cover, and the integrated bearing sealing cover comprises:

[0009] The sealing cover body is arranged on the inner side walls of the connecting rod upper cover and the connecting rod lower cover;

[0010] The outer sealing ring is fixedly connected to the outer side wall of the sealing cover body;

[0011] The inner sealing strip is fixedly connected to the inner side wall of the sealing cover body;

[0012] A connecting rod bearing is arranged on the inner side wall of the sealing cover body.

[0013] Preferably, the sealing cover body is clamped with the connecting rod upper cover and the connecting rod lower cover through interference fit.

[0014] Preferably, the connecting rod bearing comprises:

[0015] The outer ring of the bearing is arranged on the inner side wall of the sealing cover body;

[0016] The inner ring of the bearing is sleeved on the inner side wall of the outer ring of the bearing;

[0017] The balls are arranged between the outer ring of the bearing and the inner ring of the bearing;

[0018] The retainer is arranged on the outer side wall of the ball.

[0019] Preferably, the connecting rod bearing further comprises:

[0020] The widening ring is arranged on the inner side wall of the bearing inner ring.

[0021] Preferably, outer side walls of the connecting rod upper cover and the connecting rod lower cover are provided with reinforcement components.

[0022] Preferably, the reinforcement assembly comprises:

[0023] The reinforcing plate is fixedly connected to the outer side walls of the connecting rod upper cover and the connecting rod lower cover;

[0024] There are two reinforcing bolts in total, which are threadedly connected to the connecting rod upper cover and the connecting rod lower cover respectively.

[0025] Preferably, the reinforcement assembly further comprises:

[0026] The reinforcement gasket is fixedly connected to one side of the reinforcement plate.

[0027] (III) Beneficial effects

[0028] Compared with the prior art, the utility model provides a combined piston connecting rod bearing having the following

[0029] Beneficial effects:

[0030] 1. The combined piston-connecting rod bearing is provided with an integrated bearing sealing cover, which is used to combine the connecting rod and the bearing together, so that the integrated bearing sealing cover can seal and block between the connecting rod and the bearing, which can not only improve the sealing performance of the bearing connection, but the integrated bearing sealing cover itself is also elastic, which can buffer the bearing force and improve the service life of the bearing.

[0031] 2. The combined piston-connecting rod bearing is provided with a reinforcement component, which reinforces the side walls of the upper and lower covers, thereby further improving the strength of the connection between the bearing and the upper and lower covers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the integrated bearing sealing cover and connecting rod bearing in the utility model;

[0034] Figure 3 It is a cross-sectional view of the integrated bearing sealing cover in the utility model;

[0035] Figure 4 It is a cross-sectional view of the connecting rod bearing in the utility model;

[0036] Figure 5 It is a structural schematic diagram of the reinforcement component in the utility model.

[0037] In the figure:

[0038] 10. Piston connecting rod;

[0039] 20. Connecting rod upper cover;

[0040] 30. Connecting rod lower cover;

[0041] 40. Connecting bolts;

[0042] 50. Integrated bearing sealing cover; 51. Sealing cover body; 52. External sealing ring; 53. Internal sealing strip;

[0043] 60. Connecting rod bearing; 61. Bearing outer ring; 62. Bearing inner ring; 63. Ball; 64. Retainer; 65. Widened ferrule;

[0044] 70. Reinforcement assembly; 71. Reinforcement plate; 72. Reinforcement bolt; 73. Reinforcement gasket. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0047] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0049] The prior art adopts a separate or combined design of the bearing and the piston connecting rod, and connects the piston connecting rod and the bearing by direct assembly.

[0050] In the related art, the upper and lower covers of the bearing and the connecting rod are directly clamped together, the sealing performance therebetween is poor, and the force of the connecting rod is directly transmitted to the bearing, which reduces the service life of the bearing.

[0051] In order to solve the problems in the related technology to a certain extent, an embodiment of the present application provides a combined piston connecting rod, which provides an integrated bearing sealing cover, and combines the connecting rod and the bearing together by utilizing the integrated bearing sealing cover, so that the integrated bearing sealing cover can seal and block the connecting rod and the bearing, which can not only improve the sealing of the bearing connection, but the integrated bearing sealing cover itself is also elastic, which can buffer the bearing force and increase the service life of the bearing.

[0052] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0053] Combination Figure 1-Figure 5The embodiment of the present application provides a combined piston-connecting rod bearing, including a piston-connecting rod 10, a connecting rod upper cover 20 is provided at the bottom of the piston-connecting rod 10, a connecting rod lower cover 30 is provided at the bottom of the connecting rod upper cover 20, and the connecting rod upper cover 20 and the connecting rod lower cover 30 are connected by connecting bolts 40;

[0054] The piston connecting rod 10, the connecting rod upper cover 20 and the connecting rod upper cover 20 form a piston connecting rod, and the connecting rod upper cover 20 and the connecting rod upper cover 20 are assembled together by connecting bolts 40

[0055] The inner side walls of the connecting rod upper cover 20 and the connecting rod lower cover 30 are provided with an integrated bearing sealing cover 50, and the integrated bearing sealing cover 50 includes: a sealing cover body 51 provided on the inner side walls of the connecting rod upper cover 20 and the connecting rod lower cover 30; an outer sealing ring 52 fixedly connected to the outer side wall of the sealing cover body 51; an inner sealing strip 53 fixedly connected to the inner side wall of the sealing cover body 51;

[0056] The sealing cover 51 is made of elastic steel, and its cross section is a C-shaped structure. The outer sealing ring 52 on the outside seals the upper and lower covers, and the inner sealing strip 53 on the inside seals the outer ring of the bearing.

[0057] A connecting rod bearing 60 is provided on the inner wall of the sealing cover body 51, and the connecting rod bearing 60 includes: a bearing outer ring 61 is arranged on the inner wall of the sealing cover body 51; a bearing inner ring 62 is sleeved on the inner wall of the bearing outer ring 61; a ball 63 is arranged between the bearing outer ring 61 and the bearing inner ring 62; and a retainer 64 is arranged on the outer wall of the ball 63.

[0058] In some embodiments, the sealing cover body 51 is clamped with the connecting rod upper cover 20 and the connecting rod lower cover 30 through interference fit, and the interference fit can improve the connection strength between the sealing cover body 51 and the connecting rod upper cover 20 and the connecting rod lower cover 30.

[0059] In some embodiments, the connecting rod bearing 60 further includes: a widened ring 65, which is disposed on the inner wall of the bearing inner ring 62. The widened ring 65 increases the contact area with the shaft and improves the ability to resist overturning loads.

[0060] In some embodiments, the outer walls of the connecting rod upper cover 20 and the connecting rod lower cover 30 are provided with a reinforcement assembly 70, and the reinforcement assembly 70 includes: a reinforcement plate 71, which is fixedly connected to the outer walls of the connecting rod upper cover 20 and the connecting rod lower cover 30; a reinforcement bolt 72, of which two are provided and are threadedly connected to the connecting rod upper cover 20 and the connecting rod lower cover 30 respectively. The connecting rod upper cover 20 and the connecting rod lower cover 30 are connected by the two reinforcement bolts 72 and the reinforcement plate 71, which can further improve the connection strength of the connecting rod upper cover 20 and the connecting rod lower cover 30.

[0061] In some embodiments, the reinforcement assembly 70 further includes: a reinforcement gasket 73 fixedly connected to one side of the reinforcement plate 71. By providing the reinforcement gasket 73, the reinforcement strength is further improved.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0063] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined piston-connecting rod bearing, comprising a piston-connecting rod (10), wherein a connecting rod upper cover (20) is provided at the bottom of the piston-connecting rod (10), a connecting rod lower cover (30) is provided at the bottom of the connecting rod upper cover (20), and the connecting rod upper cover (20) and the connecting rod lower cover (30) are connected by connecting bolts (40); Features: The inner side walls of the connecting rod upper cover (20) and the connecting rod lower cover (30) are provided with an integrated bearing sealing cover (50), and the integrated bearing sealing cover (50) comprises: A sealing cover body (51) is arranged on the inner side walls of the connecting rod upper cover (20) and the connecting rod lower cover (30); An outer sealing ring (52) is fixedly connected to the outer side wall of the sealing cover body (51); An inner sealing strip (53) fixedly connected to the inner side wall of the sealing cover body (51); A connecting rod bearing (60) is provided on the inner side wall of the sealing cover body (51).

2. A combined piston-connecting rod bearing according to claim 1, characterized in that: The sealing cover body (51) is clamped with the connecting rod upper cover (20) and the connecting rod lower cover (30) through interference fit.

3. The combined piston-connecting rod bearing according to claim 1, characterized in that: The connecting rod bearing (60) comprises: A bearing outer ring (61) is arranged on the inner side wall of the sealing cover body (51); A bearing inner ring (62) sleeved on the inner side wall of the bearing outer ring (61); A ball (63) is disposed between the bearing outer ring (61) and the bearing inner ring (62); The retainer (64) is arranged on the outer side wall of the ball (63).

4. A combined piston-connecting rod bearing according to claim 3, characterized in that: The connecting rod bearing (60) further comprises: A widened ring (65) is arranged on the inner side wall of the bearing inner ring (62).

5. The combined piston-connecting rod bearing according to claim 1, characterized in that: The outer side walls of the connecting rod upper cover (20) and the connecting rod lower cover (30) are provided with reinforcement components (70).

6. The combined piston-connecting rod bearing according to claim 5, characterized in that: The reinforcement assembly (70) comprises: A reinforcing plate (71) fixedly connected to the outer side walls of the connecting rod upper cover (20) and the connecting rod lower cover (30); There are two reinforcing bolts (72) in total, which are respectively threadedly connected to the connecting rod upper cover (20) and the connecting rod lower cover (30).

7. The combined piston-connecting rod bearing according to claim 6, characterized in that: The reinforcement assembly (70) further comprises: A reinforcing gasket (73) is fixedly connected to one side of the reinforcing plate (71).

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