Crank connecting rod assembling and positioning tool

By designing the crank link assembly positioning tool, using the first combined positioning part, the second combined positioning part, the guide assembly and the pressing transmission, the problem of lack of low-cost tooling in the prior art is solved, and efficient positioning and pressing assembly of the crank link assembly is achieved, reducing assembly costs and complexity.

CN222768254UActive Publication Date: 2025-04-18CHONGQING YUNYANG CRANKSHAFT CO LTD
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Patent Information

Application Number
CN202420670380.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-02
Publication Date
2025-04-18
Estimated Expiration
2034-04-02

AI Technical Summary

Technical Problem

In the prior art, the lack of low-cost tooling during the assembly process of crank connecting rods leads to the need to use large equipment during the assembly process, which increases cost and complexity.

Method used

A crank connecting rod assembly positioning tool is designed, including a first combined positioning member, a second combined positioning member, a guide assembly and a pressing transmission. Through the cooperation of these components, precise positioning and pressing assembly of the crank connecting rod assembly is achieved.

Benefits of technology

It realizes efficient positioning and pressing assembly of the crank connecting rod assembly process, reduces assembly costs and complexity, and is simple in structure and easy to make.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a crank connecting rod assembling and positioning tool which comprises a first combined positioning piece, a second combined positioning piece and a guide assembly. Wherein the first combined positioning piece is used for positioning a first combined piece in the crank connecting rod, and the second combined positioning piece is used for positioning a second combined piece in the crank connecting rod; the guide assembly is connected between the first combined positioning piece and the second combined positioning piece to guide the first combined positioning piece and the second combined positioning piece to move towards each other or away from each other, and a pressing transmission piece which is pressed on the top of the first combined positioning piece and used for abutting against the second combined positioning piece is arranged on the guide assembly in a sliding fit mode. Compared with the prior art, the pressing device is mainly composed of the first combined positioning piece, the second combined positioning piece, the guide assembly and the pressing transmission piece, and is simple in structure and low in manufacturing cost.
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Description

Technical Field

[0001] The utility model relates to the technical field of tooling structures, in particular to a crank-connecting rod assembly and positioning tooling. Background Art

[0002] The function of the crank connecting rod is to provide a combustion site, convert the expansion pressure of the gas on the top of the piston after the fuel is burned into the torque of the crankshaft rotation, and continuously output power. The crank connecting rod is the main moving part of the engine to realize the working cycle and complete the energy conversion. In the power stroke, it converts the heat energy generated by the combustion of the fuel into mechanical energy through the reciprocating motion of the piston and the rotation of the crankshaft, and outputs power to the outside; in other strokes, it relies on the rotational inertia of the crank and flywheel to drive the piston up and down through the connecting rod to create conditions for the next power stroke.

[0003] Crank connecting rod 1 Figure 1 As shown, it includes piece one 111, piece two 112, piece three 113, piece four 121 and piece five 122. Piece one 111, piece two 112 and piece three 113 are assembled to form assembly one 11, and piece four 121 and piece five 122 are assembled to form assembly two 12. Finally, assembly one 11 and assembly two 12 are pressed together to assemble into shape.

[0004] Currently, large equipment is used to assemble the crank connecting rod, and there is no low-cost tooling to position the above assembly process. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a crank-connecting rod assembly positioning tool to solve the problem that in the prior art, large equipment is now used to assemble the crank-connecting rod, and there is no low-cost tooling to position the above-mentioned assembly process.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a crank connecting rod assembly positioning tool, comprising:

[0007] A first assembly positioning member, the first assembly positioning member is used to position an assembly in the crank connecting rod;

[0008] A second assembly positioning member, the second assembly positioning member is used to position the second assembly in the crank connecting rod;

[0009] A guide assembly is connected between the first combined positioning member and the second combined positioning member to guide the first combined positioning member and the second combined positioning member to move toward or away from each other, and the guide assembly is slidably matched with a pressing transmission member pressed on the top of the combination and used to abut against the second combined positioning member.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] The crank-connecting rod assembly positioning tool is mainly composed of a first combined positioning part, a second combined positioning part, a guide component and a pressing transmission part, and has a simple structure and low manufacturing cost; the first combined positioning part is used to position the assembly one, the second combined positioning part is used to position the assembly two, the guide component is used to guide the second combined positioning part in the process of approaching the first combined positioning part, and cooperates with the pressing transmission part to transmit force against the second combined positioning part in this process, so as to press the assembly two and the assembly one to complete the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a cross-sectional view of a crank connecting rod;

[0013] Figure 2 It is a structural schematic diagram of a crank-connecting rod assembly positioning tool in one embodiment of the utility model when the crank-connecting rod is press-assembled;

[0014] Figure 3 for Figure 2 A front view of

[0015] Figure 4 for Figure 3 Section view along line AA.

[0016] The figure marks in the drawings of the specification include: crank connecting rod 1, assembly one 11, component one 111, component two 112, component three 113, assembly two 12, component four 121, component five 122, first assembly positioning component 2, bottom positioning seat 21, second assembly positioning component 3, top positioning seat 31, locking block 32, guide assembly 4, first guide column 41, second guide column 42, pressing transmission component 5, pressing transmission block 51. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below through specific implementation methods:

[0018] like Figure 2 , Figure 3 as well as Figure 4 As shown, an embodiment of the utility model provides a crank-connecting rod assembly positioning tool, comprising a first combined positioning member 2, a second combined positioning member 3 and a guide assembly 4;

[0019] Among them, the first combined positioning member 2 is used to position the assembly 111 in the crank connecting rod 1, and the second combined positioning member 3 is used to position the assembly 2 12 in the crank connecting rod 1; the guide component 4 is connected between the first combined positioning member 2 and the second combined positioning member 3 to guide the first combined positioning member 2 and the second combined positioning member 3 to move toward or away from each other, and the guide component 4 is slidably fitted with a pressing transmission member 5 pressed on the top of the assembly 111 and used to resist the second combined positioning member 3.

[0020] The crank-connecting rod assembly and positioning tool is mainly composed of a first combined positioning member 2, a second combined positioning member 3, a guide component 4 and a pressing transmission member 5, and has a simple structure and low manufacturing cost; the first combined positioning member 2 is used to position the assembly one 111, the second combined positioning member 3 is used to position the assembly two 12, the guide component 4 is used to guide the second combined positioning member 3 in the process of approaching the first combined positioning member 2, and cooperates with the pressing transmission member 5 to transmit force against the second combined positioning member 3 in this process, so as to press the assembly two 12 and the assembly one 111 to complete the assembly.

[0021] In order to better understand the present solution, the structures of the first combined positioning member 2, the second combined positioning member 3, the guide assembly 4 and the pressing transmission member 5 will be further optimized below.

[0022] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the utility model, a crank-connecting rod assembly positioning tool is described, wherein the guide assembly 4 includes a first guide column 41, and the first guide column 41 has at least one and is slidably connected to the pressing transmission member 5, and one end of each first guide column 41 is fixedly connected to the first combined positioning member 2 or the second combined positioning member 3, and the other end thereof is matched with a first guide groove opened on the second combined positioning member 3 or the first combined positioning member 2.

[0023] In this embodiment:

[0024] There are two first guide posts 41 and both are fixedly connected to the first assembly positioning member 2. The two first guide posts 41 are symmetrically distributed on the first assembly positioning member 2, and two first guide grooves are provided on the second assembly positioning member 3. The two first guide posts 41 are matched with the two first guide grooves in a one-to-one correspondence to guide the relative movement between the first assembly positioning member 2 and the second assembly positioning member 3, which is beneficial to improving the assembly quality of the crank connecting rod 1. The two first guide posts 41 are also slidably connected to the pressing transmission member 5 to make the pressing transmission member 5 transmit the force more stably, further improving the assembly quality of the crank connecting rod 1.

[0025] In order to further improve the stability of relative movement between the first combined positioning member 2 and the second combined positioning member 3, the guide assembly 4 also includes a second guide column 42, which has at least one second guide column 42 and one end of which is fixedly connected to the first combined positioning member 2 or the second combined positioning member 3, and the other end of which is cooperated with a second guide groove opened on the second combined positioning member 3 or the first combined positioning member 2.

[0026] In this embodiment, there are two second guide posts 42 and both are fixedly connected to the first assembly positioning member 2 . The two second guide posts 42 are symmetrically distributed on the first assembly positioning member 2 , and two second guide grooves are opened on the second assembly positioning member 3 .

[0027] Here, the relative movement between the first assembly positioning member 2 and the second assembly positioning member 3 is made more stable by the cooperation between the two first guide posts 41 and the two second guide posts 42 .

[0028] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the utility model, a crank-connecting rod assembly positioning tool is described, wherein the first combined positioning member 2 includes a bottom positioning seat 21, the bottom positioning seat 21 is connected to the guide assembly 4 and has a second positioning hole formed thereon for partially embedding the combined member 111.

[0029] During the assembly process, one end of component one 111 in assembly one 111 is inserted into the second positioning hole, the middle part of component one 111 is against the top of the bottom positioning seat 21, and then component two 112 and component three 113 are assembled on the other end of component one 111 in sequence, so as to stably assemble component one 111, component two 112 and component three 113 on the first assembly positioning component 2 for positioning; then the pressing transmission component 5 is mounted on the two first guide columns 41 and then pressed on the top side of component three 113.

[0030] Among them, since a multi-step structure is formed at one end of component 111, the second positioning hole is designed as a multi-step hole so that one end of component 111 can be stably positioned in the second positioning hole; specifically, in this embodiment, the second positioning hole is a two-step hole, which cooperates with the two sections with larger diameter changes on one end of component 111, so that component 111 can be stably positioned and fixed.

[0031] like Figure 2 , Figure 3 as well as Figure 4As shown, according to another embodiment of the utility model, a crank-connecting rod assembly positioning tool is provided, wherein the second combined positioning member 3 includes a top positioning seat 31 and a locking block 32; wherein the top positioning seat 31 is connected to the guide assembly 4 and is formed with a first positioning hole for partially embedding the second assembly 12, and the locking block 32 is rotatably connected to the top positioning seat 31 and cooperates with the top positioning seat 31 to clamp the second assembly 12.

[0032] During the assembly process, one end of the fifth component 122 in the second assembly 12 is inserted into the first positioning hole, and then the locking block 32 is rotated to cooperate with the top positioning seat 31 to clamp and fix the fifth component 122, and then the fourth component 121 is sleeved on the other end of the fifth component 122.

[0033] Among them, since a multi-step structure is formed at one end of component five 122, the first positioning hole is designed as a multi-step hole so that one end of component five 122 can be stably positioned in the first positioning hole; specifically, in this embodiment, the first positioning hole is a two-step hole, which cooperates with the two sections with larger diameter changes on one end of component five 122, so that component five 122 can be stably positioned.

[0034] Furthermore, the locking block 32 includes a connecting portion rotatably connected to the top positioning seat 31 and a locking portion connected to the connecting portion, and a clamping space for partially clamping the second assembly 12 is formed between the locking portion and the top positioning seat 31. Specifically in this embodiment, the connecting portion and the locking portion are arranged in an "L" shape, and the connecting portion and the top positioning seat 31 are connected by bolts. The locking block 32 can rotate around the bolts, so that the locking portion of the locking block 32 can cooperate with the top positioning seat 31 to quickly clamp and fix the part of the fifth assembly 122 placed in the clamping space, and the locking block 32 can also be rotated to quickly disengage the locking block 32 from clamping the fifth assembly 122.

[0035] like Figure 2 , Figure 3 as well as Figure 4 As shown, according to another embodiment of the utility model, a crank-connecting rod assembly positioning tool is described, wherein the pressing transmission member 5 includes a pressing transmission block 51, and the pressing transmission block 51 is slidably mounted on the guide component 4 and pressed on the top of the assembly 111, and the pressing transmission block 51 is also used to abut against the second assembly positioning member 3, and a portion formed on one side of the pressing transmission block 51 is used to make the top of the assembly 111 slide into the installation notch.

[0036] In this embodiment:

[0037] The design of the installation notch makes it easy to quickly slide the top of component three 113 into the installation notch during the installation process, so that the pressing transmission block 51 can be against the top of component three 113; after the assembly is completed, the crank connecting rod 1 can also be quickly removed from the installation notch, and the crank connecting rod 1 is disconnected from the pressing transmission block 51.

[0038] Specifically, the pressing transmission block 51 is U-shaped, and the pressing transmission block 51 is slidably connected to the two first guide pillars 41 .

[0039] The crank-connecting rod assembly positioning tool is used when:

[0040] 1. Fix the top positioning seat 31 and the bottom positioning seat 21 to the press by bolts, and the bottom positioning seat 21 is located below the top positioning seat 31;

[0041] 2. Insert one end of the component 111 in the assembly 111 into the second positioning hole, and the middle of the component 111 abuts against the top of the bottom positioning seat 21. Then, assemble the component 2 112 and the component 3 113 on the other end of the component 111 in sequence, so as to stably assemble the component 1 111, the component 2 112 and the component 3 113 on the first assembly positioning component 2 for positioning; then, mount the pressing transmission block 51 on the two first guide pillars 41 and then press it on the top side of the component 3 113;

[0042] 3. Insert one end of the fifth component 122 in the second assembly 12 into the first positioning hole, then rotate the locking block 32 to cooperate with the top positioning seat 31 to clamp and fix the fifth component 122, and then sleeve the fourth component 121 on the other end of the fifth component 122;

[0043] 4. The rear press machine is operated to move the top positioning seat 31 downward, driving the assembly part 2 12 downward, and inserting the end of the fifth part 122 away from the first positioning hole into the third part 113 until the specified gap is reached between the fifth part 122, the third part 113 and the first part 111 to complete the assembly;

[0044] 5. Loosen the bolt to rotate the locking block 32 so that the locking block 32 is disengaged from the clamping of the fifth component 122. The press returns, the pressing transmission block 51 is taken out, and then the assembled crank connecting rod 1 is taken out, and the next pressing can begin.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A crank connecting rod assembly positioning tool, characterized in that: include: A first assembly positioning member, the first assembly positioning member is used to position an assembly in the crank connecting rod; A second assembly positioning member, the second assembly positioning member is used to position assembly 2 in the crank connecting rod; A guide assembly is connected between the first combined positioning member and the second combined positioning member to guide the first combined positioning member and the second combined positioning member to move toward or away from each other, and the guide assembly is slidably matched with a pressing transmission member pressed on the top of the combination and used to abut against the second combined positioning member.

2. The crank-connecting rod assembly and positioning tool according to claim 1, characterized in that: The pressing transmission member comprises: A pressing transmission block is slidably sleeved on the guide assembly and pressed on the top of the assembly. The pressing transmission block is also used to abut against the second assembly positioning member. One side of the pressing transmission block is formed to enable the top of the assembly to slide into the installation notch.

3. A crank-connecting rod assembly and positioning tool according to claim 1 or 2, characterized in that: The second combined positioning member comprises: A top positioning seat, the top positioning seat is connected to the guide assembly and is formed with a first positioning hole for embedding the second part of the assembly; A locking block is rotatably connected to the top positioning seat and cooperates with the top positioning seat to clamp the second assembly.

4. The crank-connecting rod assembly and positioning tool according to claim 3, characterized in that: The locking block comprises a connecting portion rotatably connected to the top positioning seat and a locking portion connected to the connecting portion, and a clamping space for clamping two parts of the assembly is formed between the locking portion and the top positioning seat.

5. The crank-connecting rod assembly and positioning tool according to claim 3, characterized in that: The first positioning hole is a multi-step hole.

6. A crank-connecting rod assembly and positioning tool according to claim 1 or 2, characterized in that: The first combined positioning member comprises: A bottom positioning seat is connected to the guide assembly and is formed with a second positioning hole for embedding a part of the assembly.

7. The crank-connecting rod assembly and positioning tool according to claim 6, characterized in that: The second positioning hole is a multi-step hole.

8. The crank-connecting rod assembly and positioning tool according to claim 1, characterized in that: The guide assembly comprises: The first guide column, there is at least one first guide column and they are all slidably connected to the pressing transmission member, one end of each first guide column is fixedly connected to the first combined positioning member or the second combined positioning member, and the other end thereof is matched with a first guide groove opened on the second combined positioning member or the first combined positioning member.

9. The crank-connecting rod assembly and positioning tool according to claim 8, characterized in that: The guide assembly also includes: The second guide column has at least one second guide column and one end of the second guide column is fixedly connected to the first combined positioning member or the second combined positioning member, and the other end of the second guide column is matched with a second guide groove provided on the second combined positioning member or the first combined positioning member.