Crankshaft connecting rod device and piston pump adopting same

Abstract

The utility model relates to the field of design and manufacture of piston pump parts, and provides a crankshaft connecting rod device and a piston pump adopting the crankshaft connecting rod device. The annular ring is arranged on the crankshaft cam of the crankshaft in a sleeving mode, the reinforcing ribs are arranged on the side, away from the connecting rod head, of the annular ring and suitable for improving the strength of the annular ring, and the service life of the crankshaft connecting rod device can be effectively prolonged by adding the reinforcing ribs.

Description

Technical Field

[0001] The utility model relates to the field of design and manufacture of piston pump parts, in particular to a crankshaft connecting rod device and a piston pump using the same. Background Art

[0002] The crankshaft connecting rod device is an important component of the piston pump. The crankshaft connecting rod includes a connecting rod head and an annular ring. An oil inlet is arranged on the side of the annular ring away from the connecting rod head. The crankshaft connecting rod device converts rotational motion into linear reciprocating motion through the annular ring. When the crankshaft rotates at a certain angular velocity, the annular ring is unevenly stressed due to the eccentric structure between the rotating shaft and the cam. The strength of the annular ring at the oil inlet is low and it is easy to break. In addition, the oil inlet is arranged on the annular ring of the crankshaft connecting rod device, which not only reduces the strength of the crankshaft connecting rod device, but also has poor lubrication effect and cannot evenly lubricate the inner wall of the annular ring. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model provides a crankshaft connecting rod device and a piston pump using the same, so as to increase the strength of the annular ring.

[0004] The utility model provides a crankshaft connecting rod device, comprising a crankshaft and a crankshaft connecting rod, wherein the crankshaft connecting rod comprises an annular ring, the annular ring is sleeved on the first end of the crankshaft, and the outer side wall of the annular ring is provided with reinforcing ribs.

[0005] According to a crankshaft connecting rod device provided by the utility model, an oil inlet groove is opened on the inner side wall of the annular ring, and the oil inlet groove is spirally arranged and coaxial with the annular ring.

[0006] According to a crankshaft connecting rod device provided by the utility model, the reinforcing rib extends in an arc shape along the circumference of the annular ring.

[0007] According to a crankshaft connecting rod device provided by the utility model, the crankshaft connecting rod further comprises a connecting rod head, and the connecting rod head and the reinforcing rib are located on the same diameter of the annular ring.

[0008] According to a crankshaft connecting rod device provided by the utility model, a through hole is provided on the connecting rod head, and the through hole is suitable for installing a pin to connect the connecting rod head and the piston.

[0009] According to a crankshaft connecting rod device provided by the utility model, the crankshaft includes a rotating shaft and at least one crankshaft cam, an eccentric structure is formed between the crankshaft cam and the rotating shaft, and a central axis of the crankshaft cam deviates from the central axis of the rotating shaft.

[0010] According to a crankshaft connecting rod device provided by the utility model, the central axes of the plurality of crankshaft cams on the crankshaft are not collinear.

[0011] According to a crankshaft connecting rod device provided by the utility model, a keyway is provided at the second end of the crankshaft, and the keyway is suitable for connecting the crankshaft and the motor.

[0012] The utility model also provides a piston pump, which comprises any one of the above crankshaft connecting rod devices.

[0013] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0014] The crankshaft connecting rod device and the piston pump using the same provided by the utility model solve the problem that the current crankshaft connecting rod device breaks due to uneven force by arranging reinforcing ribs on the outer side of the annular ring, thereby enhancing the strength of the crankshaft connecting rod device and thus increasing the service life of the crankshaft connecting rod device.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is an exploded view of the crankshaft connecting rod device provided by the utility model.

[0018] Figure 2 It is a front view of the crankshaft connecting rod device provided by the utility model.

[0019] Figure 3 It is a top view of the crankshaft connecting rod device provided by the utility model.

[0020] Figure 4 It is a stereoscopic diagram of a crankshaft connecting rod of the crankshaft connecting rod device provided by the utility model.

[0021] Figure 5 It is a cross-sectional view of a crankshaft connecting rod of the crankshaft connecting rod device provided by the utility model.

[0022] Reference numerals:

[0023] 1. Connecting rod head; 11. Through hole; 12. Latch pin; 2. Piston; 3. Annular ring; 31. Reinforcing rib; 32. Oil inlet groove; 4. Crankshaft; 41. Crankshaft cam; 42. Keyway; 43. Rotating shaft. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0025] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0027] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] 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 utility model embodiment. 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 the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] In the related technology, the existing oil inlet is set at the end of the annular ring away from the connecting rod head. The strength of the annular ring at the existing oil inlet is relatively low. Due to the eccentric structure between the rotating shaft and the cam, the annular ring is unevenly stressed, and the annular ring at the existing oil inlet is prone to breakage. On the other hand, the existing oil inlet is set on one side of the annular ring, and the lubricating oil cannot lubricate the inner circle of the annular ring evenly. In order to solve the above problems, the existing oil inlet is set as a reinforcing rib, and the reinforcing rib and the connecting rod head work together to enhance the strength of the annular ring, and an oil inlet groove is set on the inner wall of the annular ring to increase the lubrication effect.

[0030] Figure 1 It is an exploded view of the crankshaft connecting rod device provided by the utility model. Figure 2 It is a front view of the crankshaft connecting rod device provided by the utility model. Figure 3 It is a top view of the crankshaft connecting rod device provided by the utility model.

[0031] The utility model provides a crankshaft connecting rod device, such as Figure 1-Figure 3 As shown, it includes a crankshaft 4 and a crankshaft connecting rod, wherein the crankshaft connecting rod includes an annular ring 3, and the annular ring 3 is sleeved on the first end of the crankshaft 4, and the outer side wall of the annular ring 3 is provided with a reinforcing rib 31.

[0032] In this embodiment, by providing reinforcing ribs 31 on the outer side of the annular ring 3, the problem of the crankshaft connecting rod device breaking due to uneven force is solved, and the strength of the crankshaft connecting rod device is enhanced, thereby increasing the service life of the crankshaft connecting rod device.

[0033] According to some embodiments of the present invention, Figure 1-Figure 3As shown, the crankshaft connecting rod device includes a crankshaft 4 and a crankshaft connecting rod, the crankshaft connecting rod includes an annular ring 3, the annular ring 3 is suitable for connecting the crankshaft 4, the annular ring 3 is sleeved on the first end of the crankshaft 4, the rotation of the crankshaft 4 drives the annular ring 3 to perform linear reciprocating motion in the horizontal direction, during the rotation of the crankshaft 4, the annular ring 3 is subjected to uneven force and is prone to breakage, a reinforcing rib 31 is provided on the outer wall of the annular ring 3 to enhance the strength of the annular ring 3 to prevent the annular ring 3 from breaking during operation.

[0034] Figure 4 It is a stereoscopic diagram of a crankshaft connecting rod of the crankshaft connecting rod device provided by the utility model. Figure 5 It is a cross-sectional view of a crankshaft connecting rod of the crankshaft connecting rod device provided by the utility model.

[0035] According to a crankshaft connecting rod device provided by the utility model, Figure 4-Figure 5 As shown, an oil inlet groove 32 is formed on the inner side wall of the annular ring 3 . The oil inlet groove 32 is spirally arranged and coaxial with the annular ring 3 .

[0036] In this embodiment, by setting an oil inlet groove 32 on the inner wall of the annular ring 3, the problem that the lubricating oil cannot evenly lubricate the inner wall of the annular ring 3 is solved, and the lubrication area is increased. The lubricating oil flows evenly through the inner wall of the annular ring 3, thereby increasing the lubrication effect.

[0037] According to some embodiments of the utility model, the starting position of the oil inlet groove 32 is tangent to the upper side wall of the annular ring 3, and the ending position is tangent to the lower side wall of the annular ring 3, so that the lubricating oil enters the interior of the oil inlet groove 32 through the starting position of the oil inlet groove 32, and then flows out at the ending position, thereby maintaining the fluidity of the lubricating oil inside the oil inlet groove 32.

[0038] According to some embodiments of the present invention, Figure 4-Figure 5 As shown, the oil inlet groove 32 is spirally arranged, the oil inlet groove 32 is coaxial with the annular ring 3 , and the oil inlet groove 32 circles around the inner wall of the annular ring 3 for at least one circle.

[0039] According to a crankshaft connecting rod device provided by the utility model, Figure 1-Figure 5 As shown, the reinforcing rib 31 is arc-shaped along the radial section of the annular ring 3 .

[0040] According to some preferred embodiments of the present invention, Figure 1-Figure 5 As shown, the reinforcing rib 31 and the outer side wall of the annular ring 3 are smoothly transitioned through chamfering.

[0041] According to a crankshaft connecting rod device provided by the utility model, Figure 1-Figure 5As shown, the crankshaft connecting rod further includes a connecting rod head 1 , and the connecting rod head 1 and the reinforcing rib 31 are located on the same diameter of the annular ring 3 .

[0042] According to some embodiments of the utility model, the connecting rod head 1 of the crankshaft connecting rod is fixedly connected to the annular ring 3 and is arranged on the outer side wall of the annular ring 3. The connecting rod head 1 and the reinforcing rib 31 are located on the same diameter of the annular ring 3. The connecting rod head 1 and the reinforcing rib 31 work together to enhance the strength of the annular ring 3 and prevent the annular ring 3 from breaking due to uneven force during operation.

[0043] According to a crankshaft connecting rod device provided by the utility model, Figure 1-Figure 5 As shown, the connecting rod head 1 is provided with a through hole 11 , and the through hole 11 is suitable for installing a pin 12 to connect the connecting rod head 1 and the piston 2 .

[0044] According to some embodiments of the utility model, the through hole 11 cooperates with the connecting hole on the piston 2 , and the latch 12 passes through the through hole 11 and the connecting hole to connect the connecting rod head 1 with the piston 2 , and the connecting rod head 1 can rotate around the latch 12 .

[0045] According to a crankshaft connecting rod device provided by the utility model, Figure 1 and Figure 3 As shown, the crankshaft 4 includes a rotating shaft 43 and at least one crankshaft cam 41 . An eccentric structure is formed between the crankshaft cam 41 and the rotating shaft 43 , and a central axis of the crankshaft cam 41 deviates from a central axis of the rotating shaft 43 .

[0046] In this embodiment, a plurality of crankshaft cams 41 are provided, each crankshaft cam 41 is sleeved with a crankshaft connecting rod connected to the piston 2, and the rotation of the rotating shaft 43 drives the plurality of pistons 2 to move, thereby improving work efficiency and saving space.

[0047] According to some embodiments of the present invention, Figure 3 As shown, the annular ring 3 is sleeved on the crank cam 41. When the crank cam 41 rotates forward, the crank connecting rod transmits the forward thrust to the piston 2, and the piston 2 moves forward. When the crank cam 41 rotates 180 degrees and moves backward, the crank connecting rod transmits the backward pulling force to the piston 2, and the piston 2 retreats backward.

[0048] According to some embodiments of the present invention, Figure 1-Figure 3As shown, the central axis of the crankshaft cam 41 deviates from the central axis of the rotating shaft 43. Through the eccentric structure, the crankshaft connecting rod converts the rotational motion into a linear reciprocating motion, and the rotating shaft 43 rotates. Due to the existence of the eccentric structure, the annular ring 3 is subjected to uneven force. Therefore, a reinforcing rib 31 is provided on the outer wall of the annular ring 3 away from the connecting rod head 1 to prevent the annular ring 3 from breaking when the crankshaft cam 41 moves backward.

[0049] According to a crankshaft connecting rod device provided by the utility model, Figure 1 and Figure 3 As shown, the central axes of the multiple crankshaft cams 41 on the crankshaft 4 are not collinear.

[0050] In this embodiment, the crankshaft cams 41 have different deviation directions relative to the rotating shaft 43 , which can adapt to the mutual cooperation between the multiple pistons 2 .

[0051] According to a crankshaft connecting rod device provided by the utility model, Figure 1 and Figure 3 As shown, a keyway 42 is provided at the second end of the crankshaft 4, and the keyway 42 is suitable for connecting the crankshaft 4 and the motor.

[0052] In this embodiment, a keyway 42 is provided and the keyway 42 is clamped on the motor. The rotation of the motor drives the crankshaft 4 to rotate, and the crankshaft 4 rotates around the central axis of the rotating shaft 43. Since the rotating shaft 43 and the central axis of the crankshaft cam 41 are not colinear, the annular ring 3 of the crankshaft cam 41 is subjected to uneven force during the rotation process, thereby driving the annular ring 3 to perform linear reciprocating motion in the horizontal direction.

[0053] The utility model also provides a piston pump, which comprises any one of the above crankshaft connecting rod devices.

[0054] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects:

[0055] The crankshaft connecting rod device and the piston pump using the same provided by the utility model solve the problem of the current crankshaft connecting rod device being broken due to uneven force by arranging reinforcing ribs on the side of the annular ring away from the connecting rod head, thereby enhancing the strength of the crankshaft connecting rod device and thus increasing the service life of the crankshaft connecting rod device. An oil inlet groove is arranged on the inner side of the annular ring to increase the lubrication effect.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A crankshaft connecting rod device, characterized in that: It comprises a crankshaft and a crankshaft connecting rod, wherein the crankshaft connecting rod comprises an annular ring, the annular ring is sleeved on the first end of the crankshaft, and the outer side wall of the annular ring is provided with reinforcing ribs; An oil inlet groove is formed on the inner side wall of the annular ring, and the oil inlet groove is spirally arranged and coaxial with the annular ring; The reinforcing ribs extend in an arc shape along the circumference of the annular ring.

2. The crankshaft connecting rod device according to claim 1, characterized in that: The crankshaft connecting rod also includes a connecting rod head, and the connecting rod head and the reinforcing rib are located on the same diameter of the annular ring.

3. The crankshaft connecting rod device according to claim 2, characterized in that: The connecting rod head is provided with a through hole, and the through hole is suitable for installing a pin to connect the connecting rod head and the piston.

4. The crankshaft connecting rod device according to claim 1, characterized in that: The crankshaft comprises a rotating shaft and at least one crankshaft cam. An eccentric structure is formed between the crankshaft cam and the rotating shaft, and a central axis of the crankshaft cam deviates from a central axis of the rotating shaft.

5. The crankshaft connecting rod device according to claim 4, characterized in that: Central axes of the plurality of crankshaft cams on the crankshaft are not collinear.

6. The crankshaft connecting rod device according to claim 1, characterized in that: The second end of the crankshaft is provided with a keyway, and the keyway is suitable for connecting the crankshaft and the motor.

7. A piston pump, characterized in that: The piston pump comprises a crankshaft connecting rod device as described in any one of claims 1 to 6.

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