Connecting rod with reversing function

Abstract

The utility model relates to the technical field of connecting rods, in particular to a connecting rod with a reversing function, which comprises a fixing plate, a crankshaft and a connecting rod, one side of the fixing plate is fixedly connected with a driving motor through bolts, one end of a main shaft of the driving motor penetrates through the fixing plate and is fixedly connected with one end of the crankshaft, and the outer side of one end of a pin shaft of the crankshaft is mounted on the inner side of a shaft sleeve. A connecting rod is fixedly connected outside the shaft sleeve; the shaft sleeve comprises a shaft sleeve body, a sliding groove is formed in the inner side of the shaft sleeve body, the inner side of the shaft sleeve body is spirally connected with a locking screw, a fixed wedge block is rotationally connected to the bottom of the locking screw, and a belleville spring is installed on the inner side of the sliding groove. The locking screw rod comprises a rotating shaft, a screw rod is fixedly connected to the bottom of the rotating shaft, and a locking agent strip is fixedly connected to the outer side of the screw rod in an adhering mode. According to the utility model, through the arrangement of the locking screw rod and the fixed wedge block, a gap between the shaft sleeve and the crankshaft pin shaft can be accurately adjusted, lubrication is continuously provided for a contact part during movement, and abrasion is reduced; the accuracy and stability of connecting rod movement are ensured.

Description

Technical Field

[0001] This utility model relates to the field of linkage technology, specifically to a linkage with a reversing function. Background Technology

[0002] A reversing link is a special link device in the mechanical field that can change the direction of motion. Taking the link of a slider reversing mechanism as an example, when the mechanical system is running, the motion of the input component is transmitted to the link through the connector at one end of the link.

[0003] If it is necessary to change the direction of motion, the control system will issue a command to drive the slider in the reversing mechanism to slide to the designated position on the track. As the position of the slider changes, the connection angle between the connecting rod and other components also changes accordingly.

[0004] During the manufacturing process, the surfaces of the pins and bushings are difficult to achieve absolute smoothness and will have a certain degree of roughness. Microscopically, the surfaces are uneven. When the two move relative to each other, these microscopic protrusions and depressions will come into contact, collide and rub against each other, causing the material to gradually fall off and resulting in wear. In the long-term relative motion, these textures will continuously interact with each other, increasing frictional resistance and wear. Wear will lead to an increase in the connection gap, affecting the accuracy and stability of the linkage movement.

[0005] Therefore, a linkage with a reversing function is proposed to address the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a connecting rod with a reversing function to solve the problem that during long-term relative motion, these textures will continuously interact, increasing frictional resistance and wear. Wear will lead to an increase in the connection gap, affecting the accuracy and stability of the connecting rod's movement.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A connecting rod with a reversing function includes a fixed plate, a crankshaft, and a connecting rod. A drive motor is fixedly connected to one side of the fixed plate by bolts. One end of the drive motor's main shaft passes through the fixed plate and is fixedly connected to one end of the crankshaft. The outer side of one end of the crankshaft's pin is installed inside a bushing. A connecting rod is fixedly connected to the outer side of the bushing. The bushing includes a bushing body with a groove on its inner side. The inner side of the bushing body is helically connected to a locking screw. A fixed wedge is rotatably connected to the bottom of the locking screw. A butterfly spring is installed inside the groove. The locking screw includes a rotating shaft with a screw fixedly connected to its bottom. A locking agent strip is fixedly connected to the outer side of the screw by adhesive. The fixed wedge includes an elastic support layer with a rigid wedge fixedly connected to its inner side. A solid lubricant block is fixedly connected to the bottom of the elastic support layer by adhesive.

[0009] As a further optimization of this utility model, the connecting rod is rotatably connected to a slider, the slider is slidably connected to the outside of the fixed plate, and the crankshaft pin has a clearance fit with the bushing on its outer side.

[0010] As a further optimization of this utility model, four locking screws and four sliding grooves are provided. One end of the locking screw passes through the middle position of the butterfly spring and is rotatably connected to the upper end of the fixed wedge. The rotating shaft is located on the outside of the bushing body. The locking screws and the sliding grooves correspond to each other.

[0011] As a further optimization of this utility model, two locking agent strips are provided. The length of the locking agent strips is equal to the height of the screw. The locking agent strips are symmetrically arranged with the vertical axis of the rotating shaft as the axis. The locking agent strips are evenly distributed on the outer side of the screw, and one side of the locking agent strip is in contact with the protruding part on the outer side of the screw.

[0012] As a further optimization of this utility model, the following features are provided: a plurality of butterfly springs are provided, the butterfly springs are located outside the locking screw, the upper end of the butterfly spring is in close contact with the bottom end of the slide groove, the lower end of the butterfly spring is in close contact with one end of the plane of the fixed wedge block, and the butterfly springs are parallel to each other.

[0013] As a further optimization of this utility model, the following features are provided: a plurality of fixed wedges are provided, the shape of the fixed wedges is equal to that of the cross-section of the slide groove, the fixed wedges correspond one-to-one with the slide groove, and the fixed wedges are symmetrically arranged.

[0014] As a further optimization of this utility model, the solid lubricating block is provided in several parts, the end of the solid lubricating block near the crankshaft pin is set to be arc-shaped, the cross-section of the solid lubricating block is set to be square, and the arc-shaped end of the solid lubricating block is in close contact with the outer side of the crankshaft pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] In this invention, the clearance between the bushing and the crankshaft pin can be precisely adjusted by the locking screw and the fixing wedge to adapt to different working conditions. The solid lubricating block at the bottom continuously provides lubrication to the contact parts during movement, reducing the coefficient of friction between the bushing and the crankshaft pin, reducing wear, reducing energy loss, and ensuring the accuracy and stability of the connecting rod movement. The elastic support layer in the fixing wedge can effectively buffer the external impact between the bushing and the crankshaft, absorb vibration energy, and protect system components. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled connecting rod structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the bushing of this utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the bushing body of this utility model;

[0021] Figure 5 This is a schematic diagram of the overall structure of the locking screw of this utility model;

[0022] Figure 6 This is a schematic diagram of the cross-sectional structure of the elastic support layer of this utility model.

[0023] In the diagram: 1. Fixed plate; 2. Drive motor; 3. Crankshaft;

[0024] 4. Bushing; 41. Bushing body; 42. Slide groove; 43. Locking screw; 431. Rotating shaft; 432. Screw; 433. Locking agent strip; 44. Butterfly spring; 45. Fixing wedge; 451. Elastic support layer; 452. Rigid wedge; 453. Solid lubricant block;

[0025] 5. Connecting rod;

[0026] 6. Slider. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Please see Figure 1-6 This utility model provides a technical solution:

[0030] A connecting rod with a reversing function includes a fixed plate 1, a crankshaft 3, and a connecting rod 5. A drive motor 2 is fixedly connected to one side of the fixed plate 1 by bolts. One end of the main shaft of the drive motor 2 passes through the fixed plate 1 and is fixedly connected to one end of the crankshaft 3. The outer side of one end of the crankshaft 3's pin is installed inside a bushing 4. The connecting rod 5 is fixedly connected to the outer side of the bushing 4. The bushing 4 includes a bushing body 41, and a sliding groove 42 is formed on the inner side of the bushing body 41. The inner side of the bushing body 41 is screwed to a locking screw 43. The bottom of the 43 is rotatably connected to a fixed wedge 45, and a butterfly spring 44 is installed inside the slide groove 42; the locking screw 43 includes a rotating shaft 431, the bottom of the rotating shaft 431 is fixedly connected to a screw 432, and a locking agent strip 433 is fixedly connected to the outside of the screw 432 by adhesive; the fixed wedge 45 includes an elastic support layer 451, the inner side of the elastic support layer 451 is fixedly connected to a rigid wedge 452, and the bottom of the elastic support layer 451 is fixedly connected to a solid lubricating block 453 by adhesive.

[0031] As a further implementation of the above technical solution: several butterfly springs 44 are provided. The butterfly springs 44 are located outside the locking screw 43. The upper end of the butterfly spring 44 is in close contact with the bottom end of the slide groove 42, and the lower end of the butterfly spring 44 is in close contact with one end of the plane of the fixed wedge block 45. The butterfly springs 44 are parallel to each other. When the bushing 4 is subjected to external impact or vibration, the butterfly springs 44 can absorb some energy and reduce the impact on the internal structure of the bushing 4.

[0032] As a further implementation of the above technical solution: a plurality of solid lubricating blocks 453 are provided. The end of the solid lubricating block 453 near the crankshaft 3 is set as arc-shaped. The cross-section of the solid lubricating block 453 is set as square. The arc-shaped end of the solid lubricating block 453 is in close contact with the outer side of the crankshaft 3. The solid lubricating block 453 can continuously provide lubrication to the contact part and reduce the friction and wear between the inner side of the bushing 4 and the crankshaft 3 pin.

[0033] As a further implementation of the above technical solution: a slider 6 is rotatably connected to the outside of the connecting rod 5, and the outside of the slider 6 is slidably connected to the outside of the fixed plate 1. The outer side of one end of the crankshaft 3 is clearance-fitted with the bushing 4. This arrangement can make the overall structure more reasonable.

[0034] As a further implementation of the above technical solution: a number of fixed wedges 45 are provided. The shape of the cross section of the fixed wedges 45 is equal to that of the slide groove 42. The fixed wedges 45 and the slide groove 42 correspond one-to-one. The fixed wedges 45 are symmetrically arranged. The fixed wedges 45 can be precisely adjusted in terms of gap between the inner side of the bushing 4 and the pin of the crankshaft 3 by connecting with the locking screw 43.

[0035] As a further implementation of the above technical solution: four locking screws 43 and four sliding grooves 42 are provided. One end of the locking screw 43 passes through the middle position of the butterfly spring 44 and is rotatably connected to the upper end of the fixed wedge block 45. The rotating shaft 431 is located on the outside of the bushing body 41. The locking screws 43 and the sliding grooves 42 correspond to each other, which can ensure the stability of the gap between the bushing 4 and the crankshaft 3 pin.

[0036] As a further implementation of the above technical solution: two locking strips 433 are provided. The length of the locking strips 433 is equal to the height of the screw 432. The locking strips 433 are symmetrically arranged with the vertical line of the pivot 431 as the axis. The locking strips 433 are evenly distributed on the outside of the screw 432. One side of the locking strip 433 is in contact with the protruding part on the outside of the screw 432 to ensure that the locking screw 43 remains stable in the adjusted position and to prevent it from loosening due to vibration, impact or other factors.

[0037] Working process: When the drive motor 2 is started by powering on through an external wire, its main shaft begins to rotate, driving the crankshaft 3, which is fixedly connected to it, to rotate. The rotation of the crankshaft 3 transmits motion to the bushing 4 through the clearance fit between the pin and the inner side of the bushing 4. Since the connecting rod 5 is fixedly connected to the outer side of the bushing 4, the movement of the bushing 4 in turn drives the connecting rod 5 to move. During the movement of the bushing 4, if it is found that the clearance between the bushing 4 and the pin of the crankshaft 3 needs to be adjusted, it can be achieved by rotating the locking screw 43. During the rotation of the locking screw 43, the locking agent strip 433 on the outer side of the screw 432 will be squeezed and rubbed. When the screw 432 rotates to a certain extent, the locking agent... The screw 433 will break, releasing the locking agent. This released agent fills the threaded gap between the screw 432 and the inner side of the bushing body 41. Over time, the locking agent gradually solidifies, forming a barrier that prevents the screw 432 from loosening, ensuring the locking screw 43 remains stable in its adjusted position and preventing loosening due to vibration, impact, or other factors. Because a fixed wedge 45 is rotatably connected to the bottom of the locking screw 43, it moves within the groove 42. When the fixed wedge 45 moves, the rigid wedge 452 adjusts the gap between the bushing 4 and the crankshaft 3 pin, while the elastic support layer 451 can, to a certain extent... To buffer and accommodate the relative movement and minor deformation between the bushing 4 and the crankshaft 3, the solid lubricating block 453, with its arc-shaped end near the crankshaft 3 pin and tightly fitted to the outside of the pin, provides lubrication during movement, reducing friction and wear. During the movement of the bushing 4, the disc spring 44 acts as a buffer and damper. When the bushing 4 is subjected to external impact or vibration, the disc spring 44 absorbs some energy, reducing the impact on the internal structure of the bushing 4 and the entire system, ensuring system stability and reliability. Simultaneously, the disc spring 44 provides a certain preload to the fixed wedge 45, keeping it stable within the groove 42 and preventing... During its movement, the connecting rod 5 may loosen or shift due to vibration and other factors. As the bushing 4 moves, the connecting rod 5, driven by the bushing 4, moves accordingly, constrained by the sliding connection between the slider 6 and the outer side of the fixed plate 1. The trajectory and direction of the connecting rod 5 depend on the movement of the bushing 4 and the rotation law of the crankshaft 3. When the crankshaft 3 switches from rotation in one direction to rotation in another direction, the connecting rod 5 will change its direction of movement accordingly, thereby realizing the reversing function. In this process, the stability and reliability of the internal structure of the bushing 4, as well as the flexibility and precision of the sliding connection between the connecting rod 5 and the slider 6, play a key role in the accuracy and smoothness of the reversing.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connecting rod with a reversing function, comprising a fixed plate (1), a crankshaft (3), and a connecting rod (5), characterized in that: A drive motor (2) is fixedly connected to one side of the fixed plate (1) by bolts. One end of the main shaft of the drive motor (2) passes through the fixed plate (1) and is fixedly connected to one end of the crankshaft (3). The outer side of one end of the pin of the crankshaft (3) is installed on the inner side of the bushing (4). A connecting rod (5) is fixedly connected to the outer side of the bushing (4). The bushing (4) includes a bushing body (41), a sliding groove (42) is provided on the inner side of the bushing body (41), the inner side of the bushing body (41) is spirally connected to the locking screw (43), a fixed wedge (45) is rotatably connected to the bottom of the locking screw (43), and a butterfly spring (44) is installed on the inner side of the sliding groove (42). The locking screw (43) includes a rotating shaft (431), a screw (432) is fixedly connected to the bottom of the rotating shaft (431), a locking strip (433) is fixedly connected to the outside of the screw (432) by adhesive, the fixing wedge (45) includes an elastic support layer (451), a rigid wedge (452) is fixedly connected to the inside of the elastic support layer (451), and a solid lubricating block (453) is fixedly connected to the bottom of the elastic support layer (451) by adhesive.

2. A linkage with a reversing function according to claim 1, characterized in that: The connecting rod (5) is rotatably connected to a slider (6), the slider (6) is slidably connected to the outside of the fixed plate (1), and the outer side of one end of the crankshaft (3) is clearance-fitted with the bushing (4).

3. A linkage with a reversing function according to claim 1, characterized in that: There are four locking screws (43) and four sliding grooves (42). One end of the locking screw (43) passes through the middle position of the butterfly spring (44) and is rotatably connected to the upper end of the fixed wedge (45). The rotating shaft (431) is located on the outside of the bushing body (41). The locking screw (43) and the sliding groove (42) correspond to each other.

4. A linkage with a reversing function according to claim 1, characterized in that: Two locking strips (433) are provided. The length of the locking strips (433) is equal to the height of the screw (432). The locking strips (433) are symmetrically arranged about the vertical axis of the pivot (431). The locking strips (433) are evenly distributed on the outside of the screw (432). One side of the locking strips (433) is in contact with the protruding part on the outside of the screw (432).

5. A linkage with a reversing function according to claim 1, characterized in that: Several butterfly springs (44) are provided. The butterfly springs (44) are located outside the locking screw (43). The upper end of the butterfly spring (44) is in close contact with the bottom end of the slide groove (42). The lower end of the butterfly spring (44) is in close contact with one end of the plane of the fixed wedge block (45). The butterfly springs (44) are parallel to each other.

6. A linkage with a reversing function according to claim 1, characterized in that: The fixed wedge (45) is provided in a plurality of forms. The fixed wedge (45) and the slide groove (42) have the same cross-sectional shape. The fixed wedge (45) and the slide groove (42) correspond one-to-one. The fixed wedge (45) are symmetrically arranged.

7. A linkage with a reversing function according to claim 1, characterized in that: The solid lubricating block (453) is provided in several parts. The end of the solid lubricating block (453) near the crankshaft (3) is set to be arc-shaped. The cross-section of the solid lubricating block (453) is set to be square. The arc-shaped end of the solid lubricating block (453) is in close contact with the outer side of the crankshaft (3)'s pin.

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