A single cylinder engine connecting rod fine boring structure

Abstract

The utility model discloses a single cylinder machine connecting rod fine boring structure, apply in single cylinder machine connecting rod processing technical field, including mounting panel, the top fixed connection of mounting panel has the vertical board, the front side one end fixed mounting of vertical board has fixed cushion block, be equipped with two upper and lower settings on fixed cushion block, and the movable limit post of upper and lower activities, the front side other end swingly connected with movable cushion block of vertical board, and two lug blocks are fixedly connected on movable cushion block, and the two lug blocks are rotatably connected with two -way screw rod, and two limit blocks can move oppositely with two -way screw rod screw connection, and the side of two limit blocks has the inclined plane, and the inclined plane of two limit blocks cooperates and forms the clamping groove of V, and the front side between movable cushion block and fixed cushion block of vertical board is equipped with the pressure bar. The utility model discloses adjustable spacing movable cushion block and fixed cushion block through the setting, can adapt to the connecting rod of different center distance of clamping limit size head hole, and the flexibility is stronger when using.

Description

Technical Field

[0001] This utility model belongs to the field of single-cylinder engine connecting rod processing technology, and specifically relates to a precision boring structure for single-cylinder engine connecting rods. Background Technology

[0002] A single-cylinder engine, as the name suggests, is an engine with only one cylinder. As the most basic structural form of internal combustion engines, it occupies a place in many fields due to its unique characteristics. The main advantage of a single-cylinder engine lies in its simple structure, which directly brings benefits such as low manufacturing cost, light weight, small size, and convenient maintenance. At the same time, it can output a large torque at low speeds, making it very suitable for scenarios that require "power" rather than speed, such as tractors and mini-tillers.

[0003] The precision boring process of the connecting rod of a single-cylinder engine is the core step to ensure that its key holes (mainly the big end hole and the small end bushing hole) achieve the final dimensional accuracy, shape accuracy and surface quality. During the precision boring process of the connecting rod of a single-cylinder engine, the connecting rod is usually clamped by a fixture. However, the center distance between the big end hole and the small end hole of the existing fixture is fixed. Every time the type of product is changed, a special fixture needs to be replaced and the machine tool needs to be readjusted, which is quite inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a precision boring structure for a single-cylinder engine connecting rod. Its advantages are that it can ensure the stability of the connecting rod during precision boring, and at the same time, it can easily adapt to connecting rods with different center distances between the large and small end holes.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a single-cylinder engine connecting rod precision boring structure, including a mounting plate, a vertical plate fixedly connected to the top of the mounting plate, a fixed pad fixedly installed at one end of the front side of the vertical plate, two vertically arranged and movable limiting posts on the fixed pad, a movable pad movably connected to the other end of the front side of the vertical plate, two lugs fixedly connected to the movable pad, a bidirectional screw rotatably connected between the two lugs, two relatively movable limiting blocks threadedly connected to the bidirectional screw, one side of the two limiting blocks having an inclined surface, and the inclined surfaces of the two limiting blocks cooperating to form a V-shaped clamping groove, and a pressure rod provided on the front side of the vertical plate between the movable pad and the fixed pad.

[0006] The above technical solution is adopted: the clamping groove formed by the two limiting blocks on the movable pad can limit the large end of the connecting rod, while the two limiting posts on the fixed pad can limit the small end of the connecting rod. The movable pad can be displaced relative to the fixed pad to get closer to or away from the fixed pad, so as to adapt to clamping connecting rods with different center distances of different end holes. The pressure rod can cooperate with the upright plate to press down the main body of the connecting rod to further limit the connecting rod.

[0007] The present invention is further configured such that the fixing pad and the upright plate are provided with matching strip holes, one end of the limiting post can pass through the strip hole, and the end of the limiting post passing through the strip hole has an external thread and is threadedly connected to a fastening nut.

[0008] The above technical solution allows the two limiting posts on the fixed pad to move up and down and adjust the distance between them to accommodate the small end of the limiting link. When the threaded nut is tightened to connect with the external thread on the limiting post, the limiting post remains stable and does not shift.

[0009] The present invention is further configured such that a guide rod is fixedly connected between the two ear blocks, and a guide hole through which the guide rod passes is provided on the two limiting blocks.

[0010] The above technical solution is adopted: the guide rod guides the up and down movement of the two limiting blocks, the two ear blocks are set up vertically, and by rotating the bidirectional screw, the two limiting blocks can be driven to move closer or further apart so that the opening size of the clamping groove is different, so as to adapt to the large end of the limiting connecting rod.

[0011] The present invention is further configured such that a side plate is fixedly connected to one front end of the movable pad, a fixing block is fixedly connected to one front end of the upright plate, an adjusting screw with its end penetrating the fixing block is threaded to one side of the fixing block, and one end of the adjusting screw is rotatably connected to the side plate through a bearing.

[0012] The above technical solution allows for the adjustment of the distance between the movable and fixed pads by rotating the adjusting screw.

[0013] The present invention is further configured such that a sliding groove is provided on the front side of the upright plate, and a slider that is slidably connected to the sliding groove is fixedly connected to the rear side of the movable pad.

[0014] The above technical solution uses the cooperation of the groove and the slider to guide the displacement of the movable pad.

[0015] The present invention is further configured such that a fixing screw is fixedly provided on the front side of the upright plate between the movable pad and the fixed pad, and a groove is opened on the surface of the pressure rod through which the end of the fixing screw passes. A clamping nut pressing on the pressure rod is threadedly connected to one end of the fixing screw that passes through the groove.

[0016] The above technical solution is adopted as follows: when the large end and small end of the connecting rod are limited, and the groove of the pressure rod is passed through by the fixing screw, the pressure rod is pressed on the connecting rod, and the clamping nut is tightened at the same time. The clamping nut presses the pressure rod, so that the pressure rod can press the connecting rod, and further limit the connecting rod.

[0017] The present invention is further configured such that the front side of the upright plate is located at the same height as the movable pad and the fixed pad.

[0018] The above technical solution is adopted: the equal height pad is used for the main body of the contact rod so as to cooperate with the pressure rod to limit the connection rod.

[0019] The leveling block can be a cylindrical screw with a threaded connection to the vertical plate to adjust its height.

[0020] The present invention is further provided that the top of the mounting plate is fixedly connected to a triangular reinforcing block that is connected to the rear side of the upright plate.

[0021] Using the above technical solution: the triangular reinforcing block can improve the connection stability between the mounting plate and the upright plate.

[0022] In summary, this utility model has the following beneficial effects: 1. This utility model, by setting adjustable spacing movable pads and fixed pads, can adapt to connecting rods with different center distances of clamping and limiting head holes, making it more flexible in use.

[0023] 2. This utility model, by setting up a pressure rod and a height-equalizing pad, can work together with a limiting link to keep the link stable during precision boring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention with the connecting rod removed; Figure 3 This is a schematic diagram of the structure of the movable pad of this utility model; Figure 4 This is a schematic diagram of the structure of the limiting block of this utility model; Figure 5 This is a schematic diagram of the structure after the fixing pad of this utility model has been removed; Figure 6 This utility model Figure 5 Enlarged diagram of point A in the diagram; Figure 7 This is a schematic diagram of the structure of the pressure bar of this utility model.

[0025] Reference numerals: 1. Mounting plate; 2. Vertical plate; 3. Fixed pad; 4. Movable pad; 5. Limiting post; 6. Ear block; 7. Limiting block; 8. Gutter; 9. Two-way screw; 10. Guide rod; 11. Strip hole; 12. Fastening nut; 13. Side plate; 14. Fixed block; 15. Adjusting screw; 16. Slide groove; 17. Fixed screw; 18. Pressure rod; 19. Slot; 20. Pressure nut; 21. Equal height pad. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Example 1: refer to Figures 1-4 A single-cylinder engine connecting rod precision boring structure includes a mounting plate 1, a vertical plate 2 fixedly connected to the top of the mounting plate 1, a fixed pad 3 fixedly installed at one front end of the vertical plate 2, two vertically arranged and movable limiting posts 5 on the fixed pad 3, and a movable pad 4 movably connected to the other front end of the vertical plate 2, two lugs 6 fixedly connected to the movable pad 4, a bidirectional screw 9 rotatably connected between the two lugs 6, and two relatively movable limiting blocks 7 threadedly connected to the bidirectional screw 9, one side of the two limiting blocks 7 having an inclined surface, and the inclined surfaces of the two limiting blocks 7 cooperating to form a V-shaped clamping groove 8.

[0028] The clamping groove 8 formed by the two limiting blocks 7 on the movable pad 4 can limit the large end of the connecting rod, while the two limiting posts 5 on the fixed pad 3 can limit the small end of the connecting rod. The movable pad 4 can move the fixed pad 3 to get closer to or away from the fixed pad 3 in order to adapt to clamping connecting rods with different center distances of different end holes.

[0029] refer to Figure 5 , Figure 6 Both the fixing pad 3 and the upright plate 2 are provided with matching strip holes 11. One end of the limiting post 5 can pass through the strip hole 11. The end of the limiting post 5 that passes through the strip hole 11 has an external thread and is threadedly connected to a fastening nut 12.

[0030] The two limiting posts 5 on the fixed pad 3 can move up and down and the distance between the two limiting posts 5 can be adjusted to accommodate the small end of the limiting link. When the fastening nut 12 is threaded into the external thread on the limiting post 5, the limiting post 5 remains stable and will not move.

[0031] refer to Figure 4 A guide rod 10 is fixedly connected between the two ear blocks 6, and guide holes through which the guide rod 10 passes are opened on the two limit blocks 7.

[0032] The guide rod 10 guides the up and down movement of the two limiting blocks 7. The two ear blocks 6 are set up vertically. By rotating the bidirectional screw 9, the two limiting blocks 7 can be driven to move closer or further apart so that the opening size of the clamping groove 8 is different, thus adapting to the large end of the limiting connecting rod.

[0033] refer to Figure 2 , Figure 3The front end of the movable pad 4 is fixedly connected to a side plate 13, and the front end of the upright plate 2 is fixedly connected to a fixing block 14. One side of the fixing block 14 is threadedly connected to an adjusting screw 15 with its end penetrating through the fixing block 14. One end of the adjusting screw 15 is rotatably connected to the side plate 13 through a bearing.

[0034] By rotating the adjusting screw 15, the side plate 13 can be driven to move the movable pad 4, so as to adjust the distance between the movable pad 4 and the fixed pad 3.

[0035] refer to Figure 2 , Figure 3 The front side of the upright plate 2 is provided with a sliding groove 16, and the rear side of the movable pad 4 is fixedly connected to a slider that is slidably connected to the sliding groove 16.

[0036] The groove 16, in conjunction with the slider, is used to guide the displacement of the movable pad 4.

[0037] Brief description of usage: When the connecting rod needs to be limited, place the small end of the connecting rod between the two limiting posts 5, and place the large end of the connecting rod in the clamping groove 8 formed by the cooperation of the two limiting blocks 7, so that the connecting rod can be limited.

[0038] When it is necessary to adjust the distance between the movable pad 4 and the fixed pad 3, rotate the adjusting screw 15. The end of the adjusting screw 15 abuts against the side plate 13, which allows the movable pad 4 to move in the slide groove 16 through the slider, thereby adjusting the position of the movable pad 4. The position adjustment of the movable pad 4 can adapt to the connection rod with different center distances between the large and small end holes.

[0039] Example 2: Based on Example 1, and referring to Figure 1 , Figure 2 , Figure 7 A single-cylinder engine connecting rod precision boring structure also includes a pressure rod 18, with the pressure rod 18 located on the front side of the upright plate 2 between the movable pad 4 and the fixed pad 3.

[0040] The pressure bar 18 can work with the upright plate 2 to press down the main body of the connecting rod, thereby further limiting the connecting rod.

[0041] refer to Figure 7 A fixing screw 17 is fixedly installed on the front side of the upright plate 2 between the movable pad 4 and the fixed pad 3. A groove 19 is opened on the surface of the pressure rod 18 through which the end of the fixing screw 17 passes. A clamping nut 20 is threadedly connected to one end of the fixing screw 17 that passes through the groove 19 and is pressed on the pressure rod 18.

[0042] When the large end and small end of the connecting rod are limited, and the groove 19 of the pressure rod 18 is passed through by the fixing screw 17, the pressure rod 18 is pressed onto the connecting rod. At the same time, the clamping nut 20 is tightened, and the clamping nut 20 presses down on the pressure rod 18, so that the pressure rod 18 can press down on the connecting rod, and further limit the connecting rod.

[0043] refer to Figure 2 , Figure 6 The front side of the upright plate 2 is located between the movable pad 4 and the fixed pad 3, with a pad 21 at the same height.

[0044] The leveling block 21 is used to contact the main body of the connecting rod so as to cooperate with the pressure rod 18 to limit the connecting rod.

[0045] refer to Figure 1 The leveling pad 21 is used to contact the main body of the connecting rod so as to cooperate with the pressure rod 18 to limit the connecting rod.

[0046] The triangular reinforcing block can improve the connection stability between the mounting plate 1 and the upright plate 2.

[0047] Brief description of the usage process: When the large end and small end of the connecting rod are limited, the groove 19 of the pressure rod 18 is passed through the fixing screw 17, and the clamping nut 20 is tightened at the same time. The clamping nut 20 presses the pressure rod 18, so that the pressure rod 18 can press the connecting rod.

[0048] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0049] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A precision boring structure for a single-cylinder engine connecting rod, comprising a mounting plate (1), characterized in that: The top of the mounting plate (1) is fixedly connected to a vertical plate (2). A fixed pad (3) is fixedly installed on one end of the front side of the vertical plate (2). The fixed pad (3) is provided with two vertically arranged and movable limiting posts (5). The other end of the front side of the vertical plate (2) is movably connected to a movable pad (4). Two ear blocks (6) are fixedly connected to the movable pad (4). A bidirectional screw (9) is rotatably connected between the two ear blocks (6). The bidirectional screw (9) is threadedly connected to two relatively movable limiting blocks (7). One side of the two limiting blocks (7) has an inclined surface, and the inclined surfaces of the two limiting blocks (7) cooperate to form a V-shaped clamping groove (8). A pressure rod (18) is provided on the front side of the vertical plate (2) between the movable pad (4) and the fixed pad (3).

2. The single-cylinder engine connecting rod precision boring structure according to claim 1, characterized in that: The fixed pad (3) and the upright plate (2) are both provided with matching strip holes (11). One end of the limiting post (5) can pass through the strip hole (11). The end of the limiting post (5) that passes through the strip hole (11) has an external thread and is threadedly connected to a fastening nut (12).

3. The single-cylinder engine connecting rod precision boring structure according to claim 1, characterized in that: A guide rod (10) is fixedly connected between the two ear blocks (6), and a guide hole is provided on the two limiting blocks (7) through which the guide rod (10) passes.

4. The single-cylinder engine connecting rod precision boring structure according to claim 1, characterized in that: The front end of the movable pad (4) is fixedly connected to a side plate (13), and the front end of the upright plate (2) is fixedly connected to a fixing block (14). One side of the fixing block (14) is threadedly connected to an adjusting screw (15) with its end penetrating through the fixing block (14). One end of the adjusting screw (15) is rotatably connected to the side plate (13) through a bearing.

5. The single-cylinder engine connecting rod precision boring structure according to claim 4, characterized in that: The front side of the upright plate (2) is provided with a sliding groove (16), and the rear side of the movable pad (4) is fixedly connected to a slider that is slidably connected to the sliding groove (16).

6. The single-cylinder engine connecting rod precision boring structure according to claim 1, characterized in that: The front side of the upright plate (2) is fixedly provided with a fixing screw (17) between the movable pad (4) and the fixed pad (3). The surface of the pressure rod (18) is provided with a groove (19) through which the end of the fixing screw (17) passes. One end of the fixing screw (17) passing through the groove (19) is threadedly connected to a clamping nut (20) pressing on the pressure rod (18).

7. The single-cylinder engine connecting rod precision boring structure according to claim 6, characterized in that: The front side of the upright plate (2) is located at the same height as the movable pad (4) and the fixed pad (3) between the movable pad (4) and the fixed pad (3) pad (21).

8. The single-cylinder engine connecting rod precision boring structure according to claim 1, characterized in that: The top of the mounting plate (1) is fixedly connected to a triangular reinforcing block that is connected to the rear side of the upright plate (2).

Images