A crank and connecting rod mechanism which reduces wear between the connecting rods

Abstract

The present application relates to the technical field of crank connecting rod mechanism, in particular to a crank connecting rod mechanism capable of reducing wear between connecting rods, comprising a crank, a first telescopic connecting rod, a second telescopic connecting rod, a telescopic swing rod and a cover plate installed on a bearing, and an oil nozzle for adding lubricating oil is further arranged on the cover plate; the movable limiting plate is arranged in the cover plate, the lubricating oil is added through the oil nozzle first, when the crank connecting rod mechanism is used, the connecting rod and the swing rod will be deflected, thereby driving the cover plate on the bearing to move, when the cover plate moves, a certain inertia will be generated, causing the limiting plate to move out of position with the cover plate, at this time, the oil inlet and the notch will have a short overlap, allowing the lubricating oil to pass through and be absorbed by the oil absorption sponge, and the rolling balls inside the bearing are wiped and lubricated by the oil absorption sponge.

Description

Technical Field

[0001] This invention relates to the field of crank-connecting rod mechanism technology, and more specifically to a crank-connecting rod mechanism that can reduce wear between connecting rods. Background Technology

[0002] Crank-connecting rod mechanism design technology can reduce wear on equipment components, maintain consistent equipment quality, and achieve stable production. Developing automated crank-connecting rod mechanism design technology is a trend driven by high production growth rates, and a crucial measure to address existing low productivity and promote the modernization of China's production. With the development of production and facility manufacturing technologies in my country's metal manufacturing industry, the foundation and conditions for vigorously developing automated crank-connecting rod mechanism design technology are now in place.

[0003] Currently, in order to reduce friction between connecting rods, the pins between the connecting rods are replaced with bearings. However, in the existing technology, bearings need to be lubricated after a period of use to make the bearings rotate more smoothly. However, when adding lubricant, it is usually added through the gap between the outer and inner rings of the bearing. This is inconvenient, and after adding, the lubricant is easy to flow out of the bearing, resulting in a short lubrication time and the need to add lubricant frequently. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a crank-connecting rod mechanism that can reduce wear between connecting rods.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A crank-connecting rod mechanism that reduces wear between connecting rods includes:

[0007] A crank, one end of which is connected to a drive motor;

[0008] The first telescopic link, one end of which is rotatably connected to the crank via a bearing;

[0009] The second telescopic link has one end rotatably connected to the end of the first telescopic link away from the crank via a bearing, and a fixing frame is provided in the middle of the second telescopic link.

[0010] A telescopic rocker arm, one end of which is rotatably connected to the end of a second telescopic link away from the first telescopic link via a bearing;

[0011] The cover plate is installed at both ends of the bearing, and the cover plate is also equipped with an oil nozzle for adding lubricating oil.

[0012] Furthermore, a baffle is provided inside the cover plate, and a hollow interlayer is provided inside the baffle. An oil-absorbing sponge is provided on the side of the baffle near the bearing, and an oil inlet connected to the oil-absorbing sponge is also provided on the baffle.

[0013] Furthermore, the interlayer has several partitions arranged in a circumferential array, and a limiting plate is slidably arranged between two partitions. The upper and lower ends of the limiting plate are provided with limiting springs, and the limiting plate is connected to the partition through the limiting springs. Notches are also provided at both ends of the partition.

[0014] Furthermore, the nozzle is provided with a flip-up cover that opens downwards, and the bottom of the nozzle has a drop opening that communicates with the inside of the cover plate. A return spring is provided at the bottom of the flip cover, and the flip cover is connected to the inner wall of the nozzle through the return spring.

[0015] Furthermore, a stop bar is provided on the top of the flip cover, the stop bar is fixed to the inner wall of the oil nozzle, and a push rod is also rotatably provided on the flip cover.

[0016] Furthermore, the first telescopic link, the second telescopic link, and the telescopic swing arm are all equipped with telescopic components and clamping components with the same structure.

[0017] Furthermore, the first telescopic link includes a fixed rod and a movable rod, and the telescopic assembly includes a telescopic motor installed in the fixed rod, with the movable end of the telescopic motor connected to a lead screw threadedly connected to the movable rod.

[0018] Furthermore, one end of the fixed rod is provided with a slide rail, and one end of the movable rod is provided with an insert plate, on which a movable slider that is slidably connected with the slide rail is provided.

[0019] Furthermore, the clamping assembly includes a mounting bracket fixed to the fixed rod, a gear rotatably disposed inside the mounting bracket, and racks slidably connected to the mounting bracket meshing on both the upper and lower sides of the gear, and a clamping plate for clamping the fixed rod and the movable rod is fixedly disposed at one end of the rack.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This invention features a movable limiting plate inside the cover plate. Lubricating oil is first added through the grease nipple. When the crank-connecting rod mechanism is in use, both the connecting rod and the rocker arm will deflect, thereby causing the cover plate on the bearing to move. When the cover plate moves, it will generate a certain inertia, causing the limiting plate to move out of place with the cover plate. At this time, the oil inlet and the notch will briefly overlap, allowing the lubricating oil to pass through and be absorbed by the oil-absorbing sponge. The oil-absorbing sponge will wipe and lubricate the balls inside the bearing, eliminating the need for frequent oiling.

[0022] 2. By making both the connecting rod and the swing arm telescopic, the present invention can be adjusted in a variety of ways according to different needs, such as the overall height of the crank-connecting rod mechanism, the distance between the first connecting rod and the swing arm, and the height of the swing arm; and after the telescopic is completed, the two ends are fixedly clamped by the clamping assembly, which is beneficial to the overall stability. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the cover plate of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the cover plate of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the oil nozzle of the present invention;

[0028] Figure 5 This is a schematic diagram showing the connection between the telescopic component and the clamping component of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the telescopic component of the present invention;

[0030] Figure 7 This is a schematic diagram of the clamping component of the present invention.

[0031] In the diagram: 1. Crank; 2. First telescopic connecting rod; 21. Fixed rod; 211. Slide rail; 22. Movable rod; 221. Insert plate; 222. Movable slider; 3. Second telescopic connecting rod; 4. Telescopic swing arm; 5. Fixed frame; 6. Bearing; 61. Cover plate; 611. Interlayer; 612. Baffle; 613. Oil inlet; 614. Partition; 615. Limiting plate; 616. Limiting spring; 617. Notch; 62. Oil nozzle; 621. Flip cover; 622. Return spring; 623. Drop opening; 624. Push rod; 625. Stop rod; 7. Telescopic assembly; 71. Telescopic motor; 72. Lead screw; 8. Clamping assembly; 81. Mounting frame; 82. Gear; 83. Rack; 84. Clamping plate. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] Reference Figures 1-7 As shown, a crank-connecting rod mechanism that can reduce wear between connecting rods includes:

[0035] Crank 1, one end of which is connected to the drive motor, is the driving component;

[0036] The first telescopic link 2, one end of which is rotatably connected to the crank 1 via a bearing 6;

[0037] The second telescopic link 3 has one end rotatably connected to the end of the first telescopic link 2 away from the crank 1 via a bearing 6, and a fixing frame 5 is provided in the middle of the second telescopic link 3.

[0038] The telescopic rocker arm 4 has one end rotatably connected to the end of the second telescopic link 3 away from the first telescopic link 2 via a bearing 6.

[0039] The crank 1 is driven to rotate by the drive motor, which in turn drives the first telescopic link 2 to deflect. The first telescopic link 2 can drive the second telescopic link 3 to rotate along the fixed frame 5, thereby driving the telescopic swing arm 4 to move up and down. The pins between the links are replaced with bearings 6 in order to reduce the friction between the links and thus increase the overall service life of the mechanism.

[0040] Cover plates 61 are installed at both ends of bearings 6. Cover plates 61 are also equipped with grease nipples 62 for adding lubricating oil. A certain amount of lubricating oil can be stored in cover plates 61, and the balls in bearings 6 can be lubricated during the use of the mechanism, thereby reducing the wear of bearings 6. This eliminates the need for operators to add lubricating oil frequently, reducing the workload of operators. Furthermore, a transparent window can be added to the surface of cover plates 61 to observe the amount of lubricating oil in cover plates 61, making it convenient for operators to add it in a timely manner.

[0041] In one embodiment, a baffle 612 is provided inside the cover plate 61, and a hollow interlayer 611 is provided inside the baffle 612. An oil-absorbing sponge is provided on the side of the baffle 612 near the bearing 6. The oil-absorbing sponge is in the shape of a ring and is installed on the baffle 612, with one side of the oil-absorbing sponge in close contact with the ball. An oil inlet 613 is also provided on the baffle 612, which is connected to the oil-absorbing sponge. In this way, after adding enough lubricating oil to the cover plate 61, the lubricating oil can pass through the oil inlet 613 and be absorbed by the oil-absorbing sponge, and then the oil-absorbing sponge can wipe and lubricate the ball.

[0042] In one embodiment, a plurality of partitions 614 are distributed in a circumferential array within the interlayer 611. A limiting plate 615 is slidably disposed between two partitions 614. The width of the limiting plate 615 is greater than that of the oil inlet 613. Limiting springs 616 are provided at both the upper and lower ends of the limiting plate 615, and the limiting plate 615 is connected to the partition 614 through the limiting springs 616. Notches 617 are also provided at both ends of the partition 614.

[0043] Initially, the limiting plate 615 blocks and seals the oil inlet 613, thus preventing the lubricating oil from contacting the oil-absorbing sponge. During operation, the cover plate 61 sways left and right with the mechanism, while the limiting plate 615 can slide within the interlayer 611. Initially, the cover plate 61 moves, but the limiting plate 615 remains stationary. After the cover plate 61 moves to a certain extent, the limiting spring 616 on one side of the limiting plate 615 is stretched, and the limiting spring 616 on the other side is compressed, thereby causing the limiting plate 615 to... 15 gradually moves under the action of elastic force, so that the limiting plate 615 and the cover plate 61 are misaligned. When the cover plate 61 returns sharply, the limiting plate 615 will continue to move forward under the action of inertia, and then move back under the action of elastic force, increasing the degree of misalignment. At this time, the notch 617 on the limiting plate 615 slowly aligns with the oil inlet 613, and the lubricating oil can pass over the baffle 612 and be absorbed by the oil-absorbing sponge, and then wipe the ball bearings through the oil-absorbing sponge.

[0044] In one embodiment, the oil nozzle 62 is provided with a flip-down cover 621. The bottom of the oil nozzle 62 has a drop opening 623 that communicates with the inside of the cover plate 61. The bottom of the flip cover 621 is provided with a return spring 622. The flip cover 621 is connected to the inner wall of the oil nozzle 62 through the return spring 622. When adding lubricating oil, the flip cover 621 needs to be pushed down to open it. At the same time, the flip cover 621 will also compress the return spring 622. Then, lubricating oil is added, so that the lubricating oil enters the cover plate 61 along the drop opening 623. After the addition is completed, the flip cover 621 is released, and the flip cover 621 will close upward under the elastic force of the return spring 622, sealing the oil nozzle 62.

[0045] In one embodiment, a stop bar 625 is provided on the top of the flip cover 621 to prevent the flip cover 621 from flipping upwards too much. The stop bar 625 is fixed to the inner wall of the oil nozzle 62. A push rod 624 is also rotatably provided on the flip cover 621. When opening, the flip cover 621 is more easily pushed open by the push rod 624. Furthermore, the push rod 624 itself is rotatably provided with the flip cover 621, which can keep the push rod 624 always vertically upward.

[0046] In one embodiment, the first telescopic link 2, the second telescopic link 3, and the telescopic swing arm 4 are all provided with telescopic components 7 and clamping components 8 with the same structure;

[0047] The mechanism can be adjusted in various ways according to different needs, such as the overall height of the mechanism, the distance between the first telescopic link 2 and the telescopic swing arm 4, and the height stroke of the telescopic swing arm 4. After the telescopic extension is completed, the telescopic part can be fixedly clamped by the clamping assembly 8, which is beneficial to the overall stability.

[0048] In one embodiment, the first telescopic link 2 includes a fixed link 21 and a movable link 22. The telescopic assembly 7 includes a telescopic motor 71 installed in the fixed link 21. The movable end of the telescopic motor 71 is connected to a lead screw 72 threadedly connected to the movable link 22. The telescopic motor 71 drives the lead screw 72 to rotate, thereby causing the movable link 22 to move in the radial direction to achieve the purpose of telescopic movement. Furthermore, the structures of the second telescopic link 3 and the telescopic swing arm 4 are roughly the same as those of the first telescopic link 2, both of which divide the entire link into two parts, one fixed part and the other movable part, thereby realizing their respective telescopic functions.

[0049] In one embodiment, a slide rail 211 is provided at one end of the fixed rod 21, and an insert plate 221 is provided at one end of the movable rod 22. A movable slider 222 that is slidably connected to the slide rail 211 is provided on the insert plate 221 for limiting the telescopic component.

[0050] In one embodiment, the clamping assembly 8 includes a mounting bracket 81 fixed to the fixed rod 21. A gear 82 is rotatably disposed inside the mounting bracket 81. The gear 82 is driven by a motor. Both the upper and lower sides of the gear 82 are meshed with racks 83 that are slidably connected to the mounting bracket 81. One end of the racks 83 is fixedly provided with a clamping plate 84 for clamping the fixed rod 21 and the movable rod 22. After each connecting rod has extended or retracted, by rotating the gear 82, the gear 82 will drive the racks 83 on the upper and lower sides to move in opposite directions, which can drive the two clamping plates 84 to move inward at the same time, fixing and clamping the upper and lower ends of the connecting rod, and maintaining the overall stability of the connecting rod.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A crank-connecting rod mechanism that reduces wear between connecting rods, characterized in that, include: Crank (1), one end of which is connected to a drive motor; The first telescopic link (2) has one end rotatably connected to the crank (1) via a bearing (6); The second telescopic link (3) has one end rotatably connected to the end of the first telescopic link (2) away from the crank (1) via a bearing (6), and a fixing frame (5) is provided in the middle of the second telescopic link (3). A telescopic swing arm (4), one end of which is rotatably connected to the end of the second telescopic link (3) away from the first telescopic link (2) via a bearing (6); Cover plate (61) is installed at both ends of bearing (6), and cover plate (61) is also provided with oil nozzle (62) for adding lubricating oil. The cover plate (61) is provided with a baffle (612), and a hollow interlayer (611) is provided inside the baffle (612). An oil-absorbing sponge is provided on the side of the baffle (612) near the bearing (6), and an oil inlet (613) connected to the oil-absorbing sponge is also provided on the baffle (612). The interlayer (611) has several partitions (614) arranged in a circumferential array. A limit plate (615) is slidably arranged between two partitions (614). Limit springs (616) are provided at both the upper and lower ends of the limit plate (615). The limit plate (615) is connected to the partition (614) through the limit springs (616). Notches (617) are also provided at both ends of the partition (614).

2. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 1, characterized in that, The nozzle (62) is provided with a flip cover (621) that can be flipped open downwards. The bottom of the nozzle (62) is provided with a drop opening (623) that communicates with the inside of the cover plate (61). The bottom of the flip cover (621) is provided with a return spring (622). The flip cover (621) is connected to the inner wall of the nozzle (62) through the return spring (622).

3. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 2, characterized in that, The top of the flip cover (621) is provided with a stop bar (625), which is fixed to the inner wall of the oil nozzle (62). A push rod (624) is also rotatably provided on the flip cover (621).

4. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 1, characterized in that, The first telescopic link (2), the second telescopic link (3) and the telescopic swing arm (4) are all equipped with telescopic components (7) and clamping components (8) with the same structure.

5. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 4, characterized in that, The first telescopic link (2) includes a fixed link (21) and a movable link (22). The telescopic assembly (7) includes a telescopic motor (71) installed in the fixed link (21). The movable end of the telescopic motor (71) is connected to a lead screw (72) that is threadedly connected to the movable link (22).

6. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 5, characterized in that, One end of the fixed rod (21) is provided with a slide rail (211), and one end of the movable rod (22) is provided with a plate (221). The plate (221) is provided with a movable slider (222) that is slidably connected to the slide rail (211).

7. A crank-connecting rod mechanism for reducing wear between connecting rods according to claim 5, characterized in that, The clamping assembly (8) includes a mounting bracket (81) fixed on a fixed rod (21). A gear (82) is rotatably arranged inside the mounting bracket (81). Both the upper and lower sides of the gear (82) are meshed with racks (83) that are slidably connected to the mounting bracket (81). One end of the rack (83) is fixedly provided with a clamping plate (84) for clamping the fixed rod (21) and the movable rod (22).

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