High-precision crank pin shaft

Abstract

The utility model relates to the technical field of crankshaft transmission structures, in particular to a high-precision crank pin shaft which comprises a crank connecting piece, and a first connecting sleeve is embedded in one side of the crank connecting piece. When the crank pin shaft is installed, the anti-friction layer in the crank connecting piece and the sliding block connecting sleeve at the other end of the crank pin shaft are aligned with the rotating disc and the sliding block to be installed in an embedded mode, then lubricating oil is injected into the lubricating oil bin, then the sealing cover is inserted, the sealing inserting piece seals an oil injection opening of the lubricating oil bin, and then the anti-friction layer is embedded into the rotating shaft. Then the first connecting sleeve is inserted into a groove of a crank connecting piece, a positioning rotary knob is rotated to push a movable clamping piece at the bottom end of a movable telescopic piece to slide, and the movable clamping piece is inserted into a connecting clamping groove in the side wall of the first connecting sleeve to complete clamping and fixing; the transmission rod moves to drive the sliding block connecting piece to move, and therefore the sliding block connected with the sliding block connecting sleeve is pushed to move linearly.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft transmission structures, in particular to a high-precision crankpin. Background Art

[0002] The crankshaft transmission mainly consists of a crankshaft, connecting rod, piston, crankcase and bearings, etc. Among them, the crankshaft and connecting rod are the core components of the crankshaft transmission, which are used to convert the linear motion of the piston into the rotational motion of the crankshaft.

[0003] Currently, the crank and crankpin are connected by a sleeve, which has many components. When the sleeve is severely worn, the precision decreases and needs to be replaced promptly. However, when adjusting the stroke or replacing the crankpin, if the sleeve is rusted, it cannot be disassembled manually and requires the use of various special equipment for disassembly and assembly, which makes it difficult to quickly and effectively replace it. To address this problem, we propose a high-precision crankpin. Utility Model Content

[0004] In view of the problems in the prior art, the utility model provides a high-precision crank pin.

[0005] The technical solution adopted by the utility model to solve its technical problems is a high-precision crank pin, including a crank connecting member, a first connecting sleeve is embedded in one side of the crank connecting member, a plurality of connecting slots are provided on the outer periphery of the first connecting sleeve, a positioning knob is rotatably connected to the end of the crank connecting member away from the first connecting sleeve, a movable telescopic member is screwedly connected to the side of the positioning knob facing the crank connecting member, a side wall of the movable telescopic member is movably connected to a movable clamping member inside the crank connecting member, and the movable clamping member is matched with the connecting slot;

[0006] A rotating shaft is embedded in the interior of the first connecting sleeve, an anti-friction layer is embedded in the interior of the rotating shaft, one end of the anti-friction layer is fixedly connected to a lubricating oil tank, a sealing plug-in is inserted through the side wall of the lubricating oil tank, and the sealing plug-in is fixedly connected to the center of the sealing cover.

[0007] By adopting the above technical solution, when installing the crank pin, the anti-friction layer inside the crank connector and the slider connecting sleeve at the other end are aligned with the turntable and the slider and installed respectively, and then the lubricating oil is injected into the lubricating oil tank and the sealing cover is inserted, so that the sealing plug-in closes the oil filling port of the lubricating oil tank, and then the anti-friction layer is embedded in the interior of the rotating shaft to complete the connection with the first connecting sleeve, and then the first connecting sleeve is inserted into the groove of the crank connector, and the positioning knob is rotated to push the movable clamping piece at the bottom of the movable telescopic piece to slide, and inserted into the connecting groove on the side wall of the first connecting sleeve to complete the clamping and fixing. When the turntable connected to the crank connector rotates, the slider connector is displaced by the movement of the transmission rod, thereby pushing the slider connected to the slider connecting sleeve to move linearly.

[0008] Specifically, the outer side wall of the crank connector is fixedly connected to a transmission rod, and one end of the transmission rod away from the crank connector is fixedly connected to a slider connector.

[0009] By adopting the above technical solution, the transmission rod and the slider connector convert rotation into linear motion.

[0010] Specifically, a slider connecting sleeve having the same connection structure as the first connecting sleeve is embedded in the center of the slider connecting piece.

[0011] By adopting the above technical solution, the slider connecting sleeve adopts the same mounting structure as the crank connecting piece to be connected to the slider.

[0012] Specifically, the movable telescopic member is rotatably connected to the side wall of the crank connecting member, and the movable clamping member is slidably connected to the inside of the crank connecting member.

[0013] By adopting the above technical solution, the movable telescopic member is telescoped inside the crank connector as the positioning knob is rotated, thereby driving the movable clamping member to move and be clamped into the connecting slot.

[0014] Specifically, a friction plate for increasing friction force is provided on the surface of one end of the movable clamping member facing the connecting clamping slot.

[0015] By adopting the above technical solution, when the movable clamping member is clamped in the connecting clamping slot by the friction plate, shaking of the clamping member in the clamping slot that affects the transmission effect can be avoided.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The technical solution of the present application is to align the anti-friction layer inside the crank connector and the slider connecting sleeve at the other end with the turntable and the slider and install them separately when installing the crank pin shaft, then inject lubricating oil into the lubricating oil tank and insert the sealing cover so that the sealing plug-in closes the oil filling port of the lubricating oil tank, then embed the anti-friction layer into the interior of the rotating shaft to complete the connection with the first connecting sleeve, and then insert the first connecting sleeve into the groove of the crank connector, rotate the positioning knob to push the movable clamping piece at the bottom of the movable telescopic piece to slide, and insert it into the connecting groove on the side wall of the first connecting sleeve to complete the clamping and fixing. When the turntable connected to the crank connector rotates, the slider connector is displaced by the movement of the transmission rod, thereby pushing the slider connected to the slider connecting sleeve to move linearly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is an axonometric drawing of the present utility model;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the crank connector and the first connecting sleeve of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the first connecting sleeve of the present invention;

[0022] In the figure: 1. Crank connector; 2. Movable telescopic member; 3. Positioning knob; 4. Movable clamp; 5. First connecting sleeve; 6. Connecting slot; 7. Rotating shaft; 8. Anti-friction layer; 9. Lubricating oil tank; 10. Sealing plug-in; 11. Sealing cover; 12. Transmission rod; 13. Slider connector; 14. Slider connecting sleeve. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] See also Figure 1-3 The embodiment of the utility model provides a technical solution: a high-precision crank pin, including a crank connector 1, a first connecting sleeve 5 is embedded on one side of the crank connector 1, a plurality of connecting slots 6 are provided on the outer periphery of the first connecting sleeve 5, a positioning knob 3 is rotatably connected to the end of the crank connector 1 away from the first connecting sleeve 5, a movable telescopic member 2 is screwedly connected to the side of the positioning knob 3 facing the crank connector 1, a side wall of the movable telescopic member 2 is movably connected to a movable clamp 4 inside the crank connector 1, and the movable clamp 4 is matched with the connecting slot 6;

[0025] A rotating shaft 7 is embedded in the interior of the first connecting sleeve 5, and an anti-friction layer 8 is embedded in the interior of the rotating shaft 7. One end of the anti-friction layer 8 is fixedly connected to a lubricating oil tank 9. A sealing plug-in 10 is inserted through the side wall of the lubricating oil tank 9, and the sealing plug-in 10 is fixedly connected to the center of the sealing cover 11.

[0026] During use, when installing the crank pin, align the anti-friction layer 8 inside the crank connector 1 and the slider connecting sleeve 14 at the other end with the turntable and the slider and install them respectively, then inject the lubricating oil into the lubricating oil tank 9 and insert the sealing cover 11, so that the sealing plug-in 10 closes the oil filling port of the lubricating oil tank 9, then embed the anti-friction layer 8 into the interior of the rotating shaft 7 to complete the connection with the first connecting sleeve 5, and then insert the first connecting sleeve 5 into the groove of the crank connector 1, rotate the positioning knob 3 to push the movable clamping part 4 at the bottom of the movable telescopic part 2 to slide, and insert it into the connecting groove 6 on the side wall of the first connecting sleeve 5 to complete the clamping and fixing. When the turntable connected to the crank connector 1 rotates, the slider connector 13 is displaced by the movement of the transmission rod 12, thereby pushing the slider connected to the slider connecting sleeve 14 to perform linear motion.

[0027] As shown in the figure, a transmission rod 12 is fixedly connected to the outer side wall of the crank connector 1 , and a slider connector 13 is fixedly connected to one end of the transmission rod 12 away from the crank connector 1 .

[0028] When in use, the transmission rod 12 and the slider connector 13 convert rotation into linear motion.

[0029] As shown in the figure, a slider connecting sleeve 14 having the same connection structure as the first connecting sleeve 5 is embedded in the center of the slider connecting member 13 .

[0030] When in use, the slider connecting sleeve 14 is connected to the slider using the same mounting structure as the crank connector 1 .

[0031] As shown in the figure, the movable telescopic member 2 is rotatably connected to the side wall of the crank connecting member 1, and the movable clamping member 4 is slidably connected to the inside of the crank connecting member 1.

[0032] When in use, the movable telescopic member 2 is extended and retracted inside the crank connector 1 as the positioning knob 3 is rotated, thereby driving the movable clamping member 4 to move and be clamped into the connecting clamping slot 6 .

[0033] As shown in the figure, a friction plate for increasing friction is provided on the surface of one end of the movable clamping member 4 facing the connecting clamping slot 6 .

[0034] When in use, the movable clamping member 4 is clamped in the connecting clamping slot 6 by the friction plate, which can prevent the clamping member from shaking in the clamping slot and affecting the transmission effect.

[0035] After the oil is pumped into the oil tank 9, the oil filling port of the oil tank 9 is sealed and the sealing cover 11 is inserted into the sealing plug 10, so that the oil filling port of the oil tank 9 is sealed. Then, the oil filling layer 8 is embedded in the interior of the rotating shaft 7 to complete the connection with the first connecting sleeve 5. Then, the first connecting sleeve 5 is inserted into the groove of the crank connector 1, and the positioning knob 3 is turned to push the movable telescopic part 2 toward the inside of the crank connector 1. The movable clamping part 4 slides along the slide groove in the crank connector 1 and is movably connected to the side wall of the movable telescopic part 2, so it slides along the slide groove, thereby being inserted into the connecting groove 6 on the side wall of the first connecting sleeve 5 to complete the clamping and fixing. When the turntable connected to the crank connector 1 rotates, the slider connector 13 is displaced by the movement of the transmission rod 12, thereby pushing the slider connected to the slider connecting sleeve 14 to move linearly.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision crankpin, characterized in that: The invention comprises a crank connector (1), a first connecting sleeve (5) is embedded in one side of the crank connector (1), a plurality of connecting slots (6) are provided on the outer periphery of the first connecting sleeve (5), a positioning knob (3) is rotatably connected to one end of the crank connector (1) away from the first connecting sleeve (5), a movable telescopic member (2) is screwedly connected to the side of the positioning knob (3) facing the crank connector (1), a side wall of the movable telescopic member (2) is movably connected to a movable clamp (4) inside the crank connector (1), and the movable clamp (4) is matched with the connecting slot (6); A rotating shaft (7) is embedded in the interior of the first connecting sleeve (5), an anti-friction layer (8) is embedded in the interior of the rotating shaft (7), one end of the anti-friction layer (8) is fixedly connected to a lubricating oil tank (9), a sealing plug-in (10) is inserted through the side wall of the lubricating oil tank (9), and the sealing plug-in (10) is fixedly connected to the center of the sealing cover (11).

2. A high-precision crankpin according to claim 1, characterized in that: The outer side wall of the crank connecting member (1) is fixedly connected to a transmission rod (12), and one end of the transmission rod (12) away from the crank connecting member (1) is fixedly connected to a slider connecting member (13).

3. A high-precision crankpin according to claim 2, characterized in that: A slider connecting sleeve (14) having the same connection structure as the first connecting sleeve (5) is embedded in the center of the slider connecting piece (13).

4. A high-precision crankpin according to claim 1, characterized in that: The movable telescopic member (2) is rotatably connected to the side wall of the crank connecting member (1), and the movable clamping member (4) is slidably connected to the interior of the crank connecting member (1).

5. The high-precision crankpin according to claim 1, characterized in that: A friction plate for increasing friction force is provided on the surface of one end of the movable clamping member (4) facing the connecting clamping slot (6).

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