Connecting rod and engineering machinery

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a connecting rod which comprises a first hinge seat, a connecting rod group and a connecting rod main body, the connecting rod set comprises at least three second hinge seats which are arranged at intervals in the seat length direction of the first hinge seats, an oil cylinder installation space for the oil cylinders to be connected in an inserted mode is formed between any two adjacent second hinge seats, and the connecting rod is suitable for the situation that double oil cylinders are compactly arranged and good in adaptability. The connecting rod body is located between the first hinge seat and the connecting rod set, one end of the connecting rod body is welded to the first hinge seat, and the at least three second hinge seats are welded to the other end of the connecting rod body. Compared with an integrally-formed connecting rod in the prior art, the connecting rod is connected in a welding mode, mold opening casting is not needed, production cost is reduced, the manufacturing period of the connecting rod is short, yield is improved, and the connecting rod is simpler in overall structure and convenient to assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to a connecting rod and engineering machinery. Background Art

[0002] In existing engineering machinery, connecting rods are usually used as connecting parts. For example, in excavators, the connecting rod is an important component connecting the bucket cylinder and the bucket. Its main function is to transmit the power of the bucket cylinder so that the bucket moves along a certain trajectory to complete operations such as excavation and loading. However, the connecting rod in the prior art usually adopts an integrated casting structure, which is relatively expensive and has a long production cycle. In the prior art, two bucket cylinders are usually provided. In this case, two connecting rods need to be arranged to connect the bucket cylinder and the bucket respectively. The use of two connecting rods requires more assembly materials, and there is a technical problem of inconvenient assembly and maintenance. Utility Model Content

[0003] The utility model aims to provide a connecting rod and engineering machinery. The connecting rod has a simple structure, convenient assembly and maintenance, low production cost and short production cycle.

[0004] In order to achieve the above object, the utility model provides a connecting rod, the connecting rod comprising:

[0005] A first hinge seat;

[0006] The connecting rod assembly comprises at least three second articulated seats arranged at intervals along the seat length direction of the first articulated seat, and an oil cylinder installation space for inserting the oil cylinder is formed between any two adjacent second articulated seats; and

[0007] The connecting rod body is located between the first hinge seat and the connecting rod assembly. One end of the connecting rod body is welded to the first hinge seat, and at least three second hinge seats are welded to the other end of the connecting rod body.

[0008] In an embodiment of the utility model, the connecting rod body includes at least three connecting plates arranged at intervals along the length direction of the seat, and the number of the connecting plates and the second hinge seat is the same and they are welded one by one.

[0009] In an embodiment of the utility model, the connecting rod body further comprises a first cover plate, a first cover plate is welded between any two adjacent connecting plates, and the first hinge seat and the second hinge seat are respectively welded to two ends of the first cover plate.

[0010] In an embodiment of the utility model, the connecting rod body also includes a second cover plate arranged one-to-one with the first cover plate, the second cover plate and the first cover plate are arranged relatively spaced apart along the plate width direction of the connecting plate, and the first cover plate, the second cover plate and the connecting plate form a hollow cavity.

[0011] In an embodiment of the utility model, the connecting rod body further comprises a reinforcing plate, a reinforcing plate is welded between any two adjacent second hinged seats, and the first cover plate and the second cover plate are both welded to the reinforcing plate.

[0012] In an embodiment of the utility model, the first cover plate and the second cover plate are both provided with an avoidance groove, the avoidance groove is located between any two adjacent second hinge seats, and the avoidance groove protrudes from the second hinge seat toward the first hinge seat.

[0013] In an embodiment of the present invention, the reinforcing plate is disposed in the avoidance groove and is in close contact with the groove wall of the avoidance groove.

[0014] In an embodiment of the utility model, the connecting plates at both ends along the length direction of the seat among at least three connecting plates are single-sided connecting plates, and the single-sided connecting plates are provided with a single-sided bevel on one side facing the first hinge seat and the second hinge seat, and the single-sided bevel is used for welding connection with the first hinge seat or the second hinge seat.

[0015] In an embodiment of the utility model, the connecting plate in the middle position along the length direction of the seat among at least three connecting plates is a double-sided connecting plate, and a double-sided bevel is provided on one side of the double-sided connecting plate facing the first hinge seat and the second hinge seat, and the double-sided bevel is used for welding and connecting with the first hinge seat or the second hinge seat.

[0016] In an embodiment of the present utility model, an engineering machine is provided, comprising the connecting rod as described above.

[0017] Through the above technical solution, the connecting rod and engineering machinery provided by the embodiment of the utility model have the following beneficial effects:

[0018] The connecting rod in the utility model includes a connecting rod body and a first articulated seat and a connecting rod group connected by the connecting rod body. The connecting rod group is composed of at least three second articulated seats arranged at intervals along the seat length direction of the first articulated seat. A cylinder installation space for plugging in the oil cylinder is formed between any two adjacent second articulated seats, and at least two oil cylinders can be connected at the same time. The connecting rod in the utility model is suitable for the situation where the double oil cylinders are compactly arranged, and the connecting rod has good adaptability. The connecting rod body is located between the first articulated seat and the connecting rod group, one end of the connecting rod body is welded to the first articulated seat, and at least three second articulated seats are welded to the other end of the connecting rod body. The connecting rod in the utility model is connected by welding. Compared with the integrated connecting rod in the prior art, the connecting rod of the utility model does not need to be molded and cast, which reduces the production cost, and the overall structure is simpler, easy to assemble, and the production cycle is short, which improves the output.

[0019] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the connecting rod in the utility model at a certain viewing angle;

[0022] Figure 2 It is a schematic structural diagram of the connecting rod according to the utility model from another perspective.

[0023] Description of Reference Numerals

[0024] 1 First hinge seat 311 Single-sided groove

[0025] 2 Second articulated seat 312 Double-sided groove

[0026] 3 Connecting rod body 32 First cover plate

[0027] 31 Connecting plate 33 Reinforcement plate

[0028] 31a Single-sided connecting plate 34 Avoidance groove

[0029] 31b Double-sided connecting plate DETAILED DESCRIPTION

[0030] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0031] The connecting rod and the engineering machine according to the present invention will be described below with reference to the accompanying drawings.

[0032] like Figure 1 and Figure 2 As shown, in an embodiment of the utility model, a connecting rod is proposed, which includes a first articulated seat 1, a connecting rod group and a connecting rod body 3. The connecting rod group includes at least three second articulated seats 2 spaced apart along the seat length direction of the first articulated seat 1, and an oil cylinder installation space for the oil cylinder to be plugged in is formed between any two adjacent second articulated seats 2. The connecting rod body 3 is located between the first articulated seat 1 and the connecting rod group, one end of the connecting rod body 3 is welded to the first articulated seat 1, and at least three second articulated seats 2 are welded to the other end of the connecting rod body 3. It should be noted that the seat length direction of the first articulated seat 1 is Figure 1 The left and right directions in the connecting plate 31 are Figure 1The up and down directions in .

[0033] The connecting rod in this embodiment includes a connecting rod body 3 and a first articulated seat 1 and a connecting rod group connected by the connecting rod body 3. The connecting rod group is composed of at least three second articulated seats 2 arranged at intervals along the seat length direction of the first articulated seat 1. A cylinder installation space for plugging in an oil cylinder is formed between any two adjacent second articulated seats 2, and at least two oil cylinders can be connected at the same time. The connecting rod in this embodiment is suitable for the situation where the double oil cylinders are compactly arranged, and the connecting rod has good adaptability. The connecting rod body 3 is located between the first articulated seat 1 and the connecting rod group, one end of the connecting rod body 3 is welded to the first articulated seat 1, and at least three second articulated seats 2 are welded to the other end of the connecting rod body 3.

[0034] In this embodiment, the first articulated seat 1, the connecting rod group and the connecting rod body 3 of the connecting rod are assembled and produced by welding. Compared with the one-piece forming connecting rod in the prior art, the connecting rod of this embodiment does not need to be cast, which reduces the production cost, and the overall structure of the connecting rod in this embodiment is simpler, easy to assemble and has a short production cycle. In addition, the connecting rod of this embodiment is particularly suitable for the close arrangement of double oil cylinders. Compared with the connecting rod in the prior art that needs to be plugged with four pins to adapt to the double oil cylinder, the connecting rod of this embodiment only needs two pins to be assembled, making the overall assembly process simpler and convenient for later maintenance. The pins can be plugged in through the first articulated seat 1 and the second articulated seat 2. The overall weight of the connecting rod is reduced compared with the prior art, which reduces the weight and makes the cost of the connecting rod lower. This embodiment can connect more than two oil cylinders with one connecting rod, and is not limited by the application scenario. It is not necessary to use two connecting rods to connect the oil cylinders as in the prior art, which reduces the use of parts.

[0035] The first articulated seat 1 includes a connecting pipe and two connecting sleeves, and adopts a three-section structure. The two connecting sleeves are connected along the seat length direction and are respectively connected to the two ends of the connecting pipe. The connecting sleeve is used to connect with the bucket. The first articulated seat 1 adopts a three-section welded structure, which can effectively reduce the production cost of the connecting rod. After the three-section welding is completed, the first articulated seat 1, the second articulated seat 2, the connecting plate 31, the first cover plate 32, the second cover plate, the reinforcing plate 33, etc. are integrally welded, and then further heat treated and machined to complete the production of the connecting rod.

[0036] like Figure 1 and Figure 2As shown, the connecting rod body 3 includes at least three connecting plates 31 spaced apart along the length direction of the seat, and the number of the connecting plates 31 and the second articulated seats 2 are consistent and welded one by one, ensuring that each second articulated seat 2 can be connected to the first articulated seat 1 through the connecting plates 31, ensuring the overall structural stability of the connecting rod. Among them, in this embodiment, three connecting plates 31 are provided, and the specific number of connecting plates 31 is adjusted according to the number of second articulated seats 2, ensuring that the connecting rod can be widely used and has good universality.

[0037] like Figure 1 and Figure 2 As shown, the connecting rod body 3 also includes a first cover plate 32. A first cover plate 32 is welded between any two adjacent connecting plates 31, and the two ends of the first cover plate 32 are respectively welded to the first hinge seat 1 and the second hinge seat 2. The first cover plate 32 is perpendicular to the connecting plate 31 and is welded to the connecting plate 31, which further improves the structural strength of the connecting rod as a whole, so that the overall compressive resistance of the connecting rod is improved. Among them, the first cover plate 32, the second cover plate, the connecting pipe and the connecting sleeve are all welded to ensure the overall structural stability of the connecting rod.

[0038] like Figure 1 and Figure 2 As shown, the connecting rod body 3 also includes a second cover plate arranged in a one-to-one correspondence with the first cover plate 32, and the second cover plate and the first cover plate 32 are arranged relatively spaced apart along the plate width direction of the connecting plate 31, and the first cover plate 32, the second cover plate and the connecting plate 31 surround a hollow cavity. The connecting rod body 3 in this embodiment is a box-shaped structure, and the first cover plate 32 and the second cover plate are arranged relatively in the up and down direction. The second cover plate is perpendicular to the connecting plate 31 and is welded to the connecting plate 31, which further improves the structural strength of the connecting rod as a whole, so that the overall compressive resistance of the connecting rod is further improved. The hollow cavity structure set in this embodiment can play a role in reducing the overall weight of the connecting rod, and can also play a technical effect of reducing the production cost of the connecting rod.

[0039] like Figure 1 and Figure 2 As shown, the connecting rod body 3 also includes a reinforcing plate 33, and a reinforcing plate 33 is welded between any two adjacent second hinge seats 2, and the first cover plate 32 and the second cover plate are welded to the reinforcing plate 33, and the first cover plate 32 and the second cover plate correspondingly arranged along the plate width direction of the connecting plate 31 are connected to the same reinforcing plate 33, thereby improving the overall structural strength of the connecting rod. Preferably, the reinforcing plate 33 is set as a U-shaped plate, and the reinforcing plate 33 is welded to the first cover plate 32, the second cover plate, and the second hinge seat 2, thereby further improving the structural strength of the connecting rod and ensuring the connection stability of the first cover plate 32, the second cover plate, and the second hinge seat 2.

[0040] like Figure 1 and Figure 2 As shown, the first cover plate 32 and the second cover plate are both provided with an avoidance groove 34, the avoidance groove 34 is located between any two adjacent second hinge seats 2, and the avoidance groove 34 protrudes from the second hinge seat 2 toward the first hinge seat 1. The avoidance groove 34 provided on the first cover plate 32 and the second cover plate can effectively achieve the technical effect of reducing the overall weight of the connecting rod, and by setting the avoidance groove 34 to protrude toward the first hinge seat 1, interference between the first cover plate 32, the second cover plate and the oil cylinder can be effectively avoided.

[0041] like Figure 2 As shown, the reinforcing plate 33 is arranged in the avoidance groove 34 and fits with the groove wall of the avoidance groove 34, so that the reinforcing plate 33 is in full contact with the groove wall of the avoidance groove 34, thereby improving the compression resistance of the reinforcing plate 33 and improving the overall structural strength of the connecting rod.

[0042] like Figure 2 As shown, the connecting plates 31 at both ends of the at least three connecting plates 31 along the seat length direction are single-sided connecting plates 31a, and the single-sided connecting plates 31a are provided with single-sided grooves 311 on the side facing the first hinge seat 1 and the second hinge seat 2, and the single-sided grooves 311 are used for welding and connecting with the first hinge seat 1 or the second hinge seat 2. Among them, the single-sided grooves 311 are arranged on the side of the single-sided connecting plate 31a away from the first hinge seat 1. Since after the first cover plate 32 is welded to the first hinge seat 1, there is little space left on the first hinge seat 1 along the seat length direction for welding the single-sided connecting plate 31a, the technical means of providing the single-sided grooves 311 on the single-sided connecting plate 31a is adopted to ensure that the single-sided connecting plate 31a can be stably welded with the first hinge seat 1 and the second hinge seat 2. Preferably, the edges of the first cover plate 32 and the second cover plate are also provided with a single-sided groove 311, and the inclination angle of the single-sided groove 311 is preferably 45°, which facilitates the butt welding between the various components on the connecting rod and improves the overall structural strength of the connecting rod.

[0043] like Figure 2 As shown, the connecting plate 31 in the middle position along the seat length direction among at least three connecting plates 31 is a double-sided connecting plate 31b, and the double-sided connecting plate 31b is provided with a double-sided groove 312 on one side facing the first hinge seat 1 and the second hinge seat 2, and the double-sided groove 312 is used for welding and connecting with the first hinge seat 1 or the second hinge seat 2. The double-sided connecting plate 31b in the middle position adopts the technical means of providing the double-sided groove 312, which ensures that the double-sided connecting plate 31b in the middle position is uniformly stressed after being welded to the first hinge seat 1 and the second hinge seat 2, ensures the stability of the overall structure of the connecting rod, and can effectively alleviate the technical problem of overall stress concentration of the connecting rod.

[0044] The utility model also proposes an engineering machine, comprising the connecting rod as described above. Since the engineering machine adopts all embodiments of the connecting rod, it also has all the beneficial effects brought by the connecting rod, which will not be described in detail here. The connecting rod of this embodiment has a wide range of applications, for example, it can be used on an excavator to connect a bucket and a bucket cylinder to assist in transmission. In one embodiment, the engineering machine is an excavator, and in other embodiments, the connecting rod can also be used for other engineering machines that need to connect transmission.

[0045] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; 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 the present invention can be understood according to specific circumstances.

[0047] 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. 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.

[0048] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A connecting rod, characterized in that: The connecting rod comprises: A first hinge seat (1); A connecting rod assembly, comprising at least three second articulated seats (2) spaced apart along the length direction of the first articulated seat (1), and an oil cylinder installation space for inserting an oil cylinder is formed between any two adjacent second articulated seats (2); and A connecting rod body (3) is located between the first hinge seat (1) and the connecting rod assembly, one end of the connecting rod body is welded to the first hinge seat (1), and at least three of the second hinge seats (2) are welded to the other end of the connecting rod body (3).

2. The connecting rod according to claim 1, characterized in that: The connecting rod body (3) comprises at least three connecting plates (31) arranged at intervals along the length direction of the seat, and the connecting plates (31) and the second hinge seat (2) have the same number and are welded in a one-to-one correspondence.

3. The connecting rod according to claim 2, characterized in that: The connecting rod body (3) further comprises a first cover plate (32), wherein one first cover plate (32) is welded between any two adjacent connecting plates (31), and the first hinge seat (1) and the second hinge seat (2) are respectively welded to two ends of the first cover plate (32).

4. The connecting rod according to claim 3, characterized in that: The connecting rod body (3) further comprises a second cover plate arranged in one-to-one correspondence with the first cover plate (32), the second cover plate and the first cover plate (32) being arranged with a relative spacing along the plate width direction of the connecting plate (31), and the first cover plate (32), the second cover plate and the connecting plate (31) enclose a hollow cavity.

5. The connecting rod according to claim 4, characterized in that: The connecting rod body (3) further comprises a reinforcing plate (33), and one reinforcing plate (33) is welded between any two adjacent second hinge seats (2), and the first cover plate (32) and the second cover plate are both welded to the reinforcing plate (33).

6. The connecting rod according to claim 5, characterized in that: The first cover plate (32) and the second cover plate are both provided with an avoidance groove (34), the avoidance groove (34) being located between any two adjacent second hinge seats (2), and the avoidance groove (34) protruding from the second hinge seat (2) in a direction approaching the first hinge seat (1).

7. The connecting rod according to claim 6, characterized in that: The reinforcing plate (33) is arranged in the avoidance groove (34) and is in contact with the groove wall of the avoidance groove (34).

8. The connecting rod according to any one of claims 2 to 7, characterized in that: The connecting plates (31) at both ends of the at least three connecting plates (31) along the length direction of the seat are single-sided connecting plates (31a), and the single-sided connecting plates (31a) are provided with a single-sided groove (311) on one side facing the first hinge seat (1) or the second hinge seat (2), and the single-sided groove (311) is used for welding connection with the first hinge seat (1) or the second hinge seat (2).

9. The connecting rod according to any one of claims 2 to 7, characterized in that: The connecting plate (31) located in the middle position along the length direction of the seat among at least three connecting plates (31) is a double-sided connecting plate (31b), and a double-sided groove (312) is provided on one side of the double-sided connecting plate (31b) facing the first hinge seat (1) or the second hinge seat (2), and the double-sided groove (312) is used for welding connection with the first hinge seat (1) or the second hinge seat (2).

10. An engineering machine, characterized in that: Comprising a connecting rod according to any one of claims 1 to 9.

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