Auxiliary device for mounting engine piston connecting rod

Abstract

The utility model relates to the technical field of engine manufacturing, in particular to an auxiliary device for installing an engine piston connecting rod, which comprises a limit structure and a guide structure connected with the limit structure. The limiting structure is clamped on the crankshaft; the piston connecting rod is arranged on the guiding device and abuts against the limiting structure. The guide structure can prevent the piston connecting rod from directly colliding with the crankshaft to damage the crankshaft; the crankshaft can be limited and guided, so that the crankshaft is prevented from slag falling due to the fact that the crankshaft is inclined in mounting position and collides and rubs with the crankshaft; the mounting precision of the piston connecting rod is effectively improved; the piston connecting rod is guided through the device, workers do not need to repeatedly and manually align and install the piston connecting rod, the installation operation of the piston connecting rod on the crankshaft is simplified, and the working efficiency of the workers is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engine manufacturing, in particular to an auxiliary device for installing an engine piston connecting rod. Background Art

[0002] In engine manufacturing, each engine needs to be assembled with a piston connecting rod. The current production adopts the traditional manual connection and hoisting method, which has low installation accuracy and is prone to tilting during installation, which may cause the crankshaft to be damaged and fall off. In addition, the assembly efficiency is low, the cycle is slow, and the labor intensity is high.

[0003] After searching, the applicant found that the Chinese patent document with publication number CN211940705U disclosed on November 17, 2020 a guide device for assembling a piston connecting rod and a cooling nozzle, including a guide rod, an auxiliary pad and a locating pin, wherein the right end of the guide rod is provided with an inclined surface, the auxiliary pad is bolted to the right end of the guide rod, and the locating pin passes through the auxiliary pad and is fixed on the inclined surface of the right end of the guide rod.

[0004] This device cannot realize accurate and rapid installation of the piston connecting rod on the engine crankshaft. Utility Model Content

[0005] The utility model aims to provide an auxiliary device for installing an engine piston connecting rod, which can realize accurate and rapid installation of the piston connecting rod on an engine crankshaft.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an auxiliary device for installing an engine piston connecting rod, comprising a limiting structure and a guide structure connected to the limiting structure; the limiting structure is clamped on the crankshaft; the piston connecting rod is arranged on the guide structure and abuts against the limiting structure.

[0007] The limiting structure comprises a limiting block, and a clamping groove is arranged on the limiting block; the clamping groove is clamped on the crankshaft, and the piston connecting rod is in abutment with the limiting block.

[0008] The limit block is provided with a stop block; the stop block is arranged at one side of the clamping slot; the piston connecting rod comprises a connecting rod big end, and the end of the connecting rod big end is in contact with the stop block.

[0009] The guide structure comprises a guide baffle; the guide baffle comprises a mounting plate and a bottom plate; the piston connecting rod is placed on the bottom plate.

[0010] Side plates are respectively arranged on both sides of the bottom plate; the big end of the connecting rod is arranged between the adjacent side plates.

[0011] The bottom plate is connected to the mounting plate; an angle is arranged between the bottom plate and the mounting plate.

[0012] The mounting plate is provided with a mounting hole; a bolt is provided in the mounting hole, and the bolt is connected to the limiting block.

[0013] A first threaded hole is provided at the bottom of the limiting block; the bolt is connected in the first threaded hole; and the mounting hole is a waist-shaped hole.

[0014] A handle is provided on one side of the limiting block away from the card slot.

[0015] A connecting bolt is provided at the end of the handle, and a second threaded hole is provided on the limiting block; the connecting bolt is connected in the second threaded hole.

[0016] The beneficial effects of this application are:

[0017] The engine comprises a crankshaft, the piston connecting rod is connected to the crankshaft; the piston connecting rod comprises a rod body; two ends of the rod body are respectively provided with a connecting rod big end and a connecting rod small end; the connecting rod big end is connected to the crankshaft through a connecting rod bearing cap; the connecting rod small end is connected to a piston;

[0018] The limiting structure comprises a limiting block; the guiding structure comprises a guiding baffle connected with the limiting block; a handle is connected to one side of the limiting block; when installing the piston connecting rod and the crankshaft, the clamping groove of the limiting block is first clamped on the crankshaft; at this time, the guiding baffle extends to the other side of the crankshaft; the connecting rod big end is placed between the two side plates of the guiding baffle, and the end of the connecting rod big end is abutted against the abutment block of the limiting block; at this time, the connecting rod big end is pushed to clamp it on the crankshaft; then the device is dismantled, a connecting rod bearing cap is installed on the crankshaft, and the connecting rod bearing cap is bolted to the connecting rod big end to complete the installation of the piston connecting rod;

[0019] The abutment block of the limit block abuts against the end of the connecting rod big end, which can prevent the connecting rod big end from directly hitting and knocking the crankshaft, causing damage to the crankshaft;

[0020] And it is possible to limit and correct the connecting rod big end when installing it, so as to avoid its installation position tilting, collision and scratching with the crankshaft, and causing the crankshaft to fall off; thus effectively improving the installation accuracy of the piston connecting rod;

[0021] The piston connecting rod is guided by the device, and workers do not need to repeatedly align and install it manually, which simplifies the installation operation of the piston connecting rod on the crankshaft and effectively improves the work efficiency of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of the auxiliary device for installing the piston connecting rod of this engine.

[0024] Figure 2 This is a schematic diagram of the structure of the limit plate of the auxiliary device for installing the piston connecting rod of the engine.

[0025] Figure 3 This is a schematic diagram of the structure of the guide baffle of the auxiliary device for installing the piston connecting rod of the engine.

[0026] Figure 4 This is a side view of the guide baffle of the auxiliary device for installing the piston connecting rod of the engine.

[0027] The marks in the above figure are:

[0028] The markings in the figure are:

[0029] 1. Limit block, 101. Slot, 102. Stop block, 103. First threaded hole,

[0030] 2. Guide baffle, 201. Mounting plate, 202. Bottom plate,

[0031] 3. Side panels,

[0032] 4. Mounting holes,

[0033] 5. Handle,

[0034] 6. Second threaded hole. DETAILED DESCRIPTION

[0035] The following is a further detailed explanation of the specific implementation methods of the utility model through the description of the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the utility model and facilitating its implementation.

[0036] Figure 1 The auxiliary device for installing the engine piston connecting rod shown includes a limiting structure and a guide structure connected to the limiting structure; the limiting structure is clamped on the crankshaft; the piston connecting rod is arranged on the guide structure and abuts against the limiting structure.

[0037] The guide structure can prevent the piston connecting rod from directly hitting and bumping the crankshaft, causing damage to the crankshaft; and can limit and correct it to prevent its installation position from tilting, hitting and scratching the crankshaft, and causing the crankshaft to fall off; it effectively improves the installation accuracy of the piston connecting rod; by guiding the piston connecting rod through this device, there is no need for staff to repeatedly align and install it manually, which simplifies the installation operation of the piston connecting rod on the crankshaft and effectively improves the work efficiency of the staff.

[0038] The limiting structure includes a limiting block 1, which is provided with a slot 101; the slot 101 is clamped on the crankshaft, and the piston connecting rod abuts against the limiting block 1. The slot 101 is adapted to the rounded surface of the crankshaft, and the two are matched and docked; the staff clamps the limiting block 1 on one side of the crankshaft through the slot 101, and installs the piston connecting rod from the other side of the crankshaft, and the limiting block 1 can limit and guide the piston connecting rod.

[0039] The stop block 1 is provided with a stop block 102; the stop block 102 is provided on one side of the slot 101; the piston connecting rod includes a connecting rod big end, and the end of the connecting rod big end is in contact with the stop block 102. The stop block 102 and the stop block 1 are an integral structure; the stop block 102 is provided along the edge of the slot 101; the stop block 102 is provided with a square end face and extends along the radial direction of the crankshaft; when the connecting rod big end is installed on the crankshaft, it is first docked with the stop block 102, which can guide its installation position to avoid its tilted installation, which causes the crankshaft to be scratched and slag; and the installation steps are simplified, and the staff does not need to align manually and repeatedly, which effectively increases the work efficiency.

[0040] The guide structure includes a guide baffle 2; the guide baffle 2 includes a mounting plate 201 and a bottom plate 202; the piston connecting rod is placed on the bottom plate 202. The mounting plate 201 and the bottom plate 202 are an integrated structure, which is formed by bending and processing a steel plate in an integrated manner; the mounting plate 201 is fixedly connected to the limit block 1, thereby realizing a stable connection between the limit block 1 and the guide baffle 2; the bottom plate 202 can limit the piston connecting rod so that it can be installed in a straight line on the crankshaft.

[0041] Side plates 3 are respectively provided on both sides of the bottom plate 202; the connecting rod big end is provided between adjacent side plates 3. The side plates 3 are square plates; two side plates 3 are provided on the bottom plate 202; the side plates 3 are provided on both sides of the connecting big end to limit its position, so as to prevent it from being offset to the left and right during installation, resulting in the installation position being tilted, causing the crankshaft to be damaged.

[0042] The bottom plate 202 is connected to the mounting plate 201; there is an angle between the bottom plate 202 and the mounting plate 201. The bottom plate 202 and the mounting plate 201 are formed by bending a steel plate in one piece; there is an angle between the bottom plate 202 and the mounting plate 201, so that the bottom plate 202 can be inserted into the gap between the cylinder sleeve and the bolt of the engine, extending to the other side of the crankshaft, providing a mounting position for the connecting rod big end and limiting its position.

[0043] The mounting plate 201 is provided with a mounting hole 4, in which a bolt is provided, and the bolt is connected to the limit block 1. The bolt passes through the mounting hole 4 and is connected to the limit block 1, thereby achieving a stable connection between the mounting plate 201 and the limit block 1.

[0044] A first threaded hole 103 is provided at the bottom of the limiting block 1; a bolt is connected in the first threaded hole 103; and the mounting hole 4 is a waist-shaped hole.

[0045] The mounting hole 4 is a waist-shaped hole, and the bolt can move in the mounting hole 4, so as to adjust the elongation length of the base plate 202 and the installation height of the connecting rod big end in the vertical direction according to the needs of the working environment; the bolt is provided with an external thread, and the first threaded hole 103 is provided with an internal thread matching the external thread; it can realize a stable connection between the mounting plate 201 and the limit block 1, and facilitate the installation and disassembly of the mounting plate 201 on the limit block 1.

[0046] A handle 5 is provided on one side of the limit block 1 away from the slot 101. The handle 5 is fixedly connected to the limit block 1; the staff can hold the handle 5 to press the limit block 1 against the crankshaft, which facilitates the operation of the staff and effectively improves the production efficiency.

[0047] A connecting bolt is provided at the end of the handle 5, and a second threaded hole 6 is provided on the limit block 1; the connecting bolt is connected to the second threaded hole 6. The connecting bolt is provided with an external thread, and the second threaded hole 6 is provided with an internal thread matching the external thread; thereby, the handle 5 can be stably connected to the limit block 1, and the installation and removal operations of the handle 5 on the limit block 1 are convenient.

[0048] The specific working process of the utility model is as follows:

[0049] When installing the piston connecting rod and the crankshaft, first clamp the slot 101 of the limit block 1 on the crankshaft; at this time, the guide baffle 2 extends to the other side of the crankshaft; place the connecting rod big end between the two side plates 3 of the guide baffle 2, and abut the end of the connecting rod big end with the abutment block 102 of the limit block 1; at this time, push the connecting rod big end to clamp it on the crankshaft; then dismantle the device, install the connecting rod bearing cap on the crankshaft, and connect the connecting rod bearing cap with the connecting rod big end bolt, and the installation of the piston connecting rod can be completed;

[0050] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An auxiliary device for installing an engine piston connecting rod, characterized in that: It comprises a limiting structure and a guide structure connected to the limiting structure; the limiting structure is clamped on the crankshaft; the piston connecting rod is arranged on the guide structure and abuts against the limiting structure; The limiting structure comprises a limiting block (1), and a clamping groove (101) is provided on the limiting block (1); the clamping groove (101) is clamped on the crankshaft, and the piston connecting rod and the limiting block (1) are in abutment with each other; The guide structure comprises a guide baffle (2); the guide baffle (2) comprises a mounting plate (201) and a bottom plate (202); and the piston connecting rod is placed on the bottom plate (202).

2. An auxiliary device for installing an engine piston connecting rod according to claim 1, characterized in that: The limit block (1) is provided with a stop block (102); the stop block (102) is arranged on one side of the clamping slot (101); the piston connecting rod comprises a connecting rod big end, and the end of the connecting rod big end is in contact with the stop block (102).

3. An auxiliary device for installing an engine piston connecting rod according to claim 2, characterized in that: Side plates (3) are respectively provided on both sides of the bottom plate (202); the connecting rod big end is arranged between adjacent side plates (3).

4. An auxiliary device for installing an engine piston connecting rod according to claim 3, characterized in that: The bottom plate (202) is connected to the mounting plate (201); an angle is provided between the bottom plate (202) and the mounting plate (201).

5. An auxiliary device for installing an engine piston connecting rod according to claim 4, characterized in that: The mounting plate (201) is provided with a mounting hole (4); a bolt is provided in the mounting hole (4), and the bolt is connected to the limiting block (1).

6. An auxiliary device for installing an engine piston connecting rod according to claim 5, characterized in that: A first threaded hole (103) is provided at the bottom of the limiting block (1); the bolt is connected in the first threaded hole (103); and the mounting hole (4) is a waist-shaped hole.

7. An auxiliary device for installing an engine piston connecting rod according to any one of claims 5 to 6, characterized in that: A handle (5) is provided on a side of the limiting block (1) away from the clamping slot (101).

8. An auxiliary device for installing an engine piston connecting rod according to claim 7, characterized in that: A connecting bolt is provided at the end of the handle (5), and a second threaded hole (6) is provided on the limit block (1); the connecting bolt is connected to the second threaded hole (6).

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