Engine crankshaft capable of rotating stably

Abstract

The utility model discloses an engine crankshaft capable of rotating stably, which comprises a device body, the device body comprises a front end and an output end, crank arms are mounted on the front end and the output end, balance blocks are connected onto the crank arms, a main journal is connected between the balance blocks, one side of the front end is connected with a connecting shaft, and the other side of the front end is connected with a connecting shaft. A small chain wheel is installed on the connecting shaft and sleeved with a chain, a large chain wheel is installed on the other side in the chain, a rotating shaft is installed in the large chain wheel, a U-shaped frame is rotatably installed on the small chain wheel, an extending buckle is arranged on the outer side wall of the rear end of the U-shaped frame, and a lead screw is installed in the extending buckle. A supporting frame is installed on the lead screw, one end of the lead screw is connected with a motor, pre-tightening adjustment can be conducted on the device according to use requirements, the practicability and convenience of the device are improved, stability and safety of the device during rotation are guaranteed, and the problem that in the rotation process of the device, a chain falls off, and consequently follow-up work is affected is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and in particular relates to an engine crankshaft with stable rotation. Background Art

[0002] An engine is a machine that can convert other forms of energy into mechanical energy. The engine crankshaft is one of the internal parts of the engine and is the main rotating part of the engine. After the connecting rod is installed, it can take over the reciprocating motion of the connecting rod and convert it into a circular motion.

[0003] In order to reduce the kinetic energy consumption and cost of the existing crankshaft during use, the crank is designed to be hollow and lightweight. This results in insufficient strength of the crank, making it more prone to instability during rotation and the chain loosening. The loose chain affects the rotation efficiency of the device and brings many inconveniences to the user's work. Therefore, we need to upgrade and transform it based on the existing technology. Utility Model Content

[0004] The purpose of the utility model is to provide an engine crankshaft with stable rotation to solve the problems raised in the above background technology.

[0005] In order to solve the above problems, the following technical solutions are provided:

[0006] A rotationally stable engine crankshaft is designed, comprising a device body, the device body including a front end and an output end, the front end and the output end being provided with crank arms, the crank arms being connected with balancing blocks, the balancing blocks being connected with main shaft journals, a connecting shaft being connected to one side of the front end, a small sprocket being provided on the connecting shaft, a chain being provided on the outer sleeve of the small sprocket, a large sprocket being provided on the other side of the chain, a rotating shaft being provided in the large sprocket, a U-shaped frame being rotatably provided on the small sprocket, an extension buckle being provided on the outer side wall at the rear end of the U-shaped frame, a lead screw being provided in the extension buckle, a support frame being provided on the lead screw, and one end of the lead screw being connected to a motor.

[0007] Furthermore, the crank arm is provided with oil holes, and the oil holes are provided in multiple groups.

[0008] Furthermore, the extension buckles are symmetrically arranged in two groups, a slide bar is installed in the extension buckle, and the slide bar is fixedly installed in the support frame.

[0009] Furthermore, the support frame is symmetrically arranged in two groups, and mounting holes are opened in the support frame, and the mounting holes are arranged in multiple groups.

[0010] Furthermore, bolts are installed in the mounting holes, and the bolts are provided in multiple groups, and the bolts are screwed and fixed to the mounting holes.

[0011] Furthermore, a fixing plate is fixedly installed below the motor, and one side of the fixing plate is welded and fixed to the supporting frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can pre-tighten the device according to the needs of use by arranging a U-shaped frame, an extension buckle, a screw rod, a slide rod, a support frame, a motor and a fixing plate, thereby increasing the practicality and convenience of the device, ensuring the stability and safety of the device during rotation, and avoiding the problem of the chain falling off during the rotation of the device and affecting subsequent work.

[0014] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of a rotationally stable engine crankshaft according to the utility model;

[0017] Figure 2 A three-dimensional diagram of a crankshaft structure of an engine crankshaft with stable rotation according to the utility model;

[0018] Figure 3 A three-dimensional diagram of a stable structure of a rotationally stable engine crankshaft according to the utility model;

[0019] Figure 4 A three-dimensional diagram of an adjustment structure of a rotationally stable engine crankshaft according to the utility model;

[0020] Figure 5 The utility model is an exploded view of the adjustment structure of a rotationally stable engine crankshaft.

[0021] In the figure: 1, device body; 2, front end; 3, balance block; 4, crank arm; 5, output end; 6, main shaft journal; 7, oil hole; 8, connecting shaft; 9, small sprocket; 10, chain; 11, large sprocket; 12, rotating shaft; 13, U-shaped frame; 14, extension buckle; 15, screw rod;

[0022] 16. Sliding rod; 17. Support frame; 18. Mounting hole; 19. Bolt; 20. Motor; 21. Fixing plate. DETAILED DESCRIPTION

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

[0024] like Figure 1 - Figure 5 As shown, the present embodiment provides a rotationally stable engine crankshaft, comprising a device body 1, the device body 1 including a front end 2 and an output end 5, crank arms 4 being mounted on the front end 2 and the output end 5, balance blocks 3 being connected to the crank arms 4, main shaft necks 6 being connected between the balance blocks 3, a connecting shaft 8 being connected to one side of the front end 2, a small sprocket 9 being mounted on the connecting shaft 8, a chain 10 being arranged outside the small sprocket 9, a large sprocket 11 being mounted on the other side of the chain 10, a rotating shaft 12 being mounted inside the large sprocket 11, a U-shaped frame 13 being rotatably mounted on the small sprocket 9, an extension buckle 14 being arranged on the outer side wall at the rear end of the U-shaped frame 13, a screw rod 15 being mounted inside the extension buckle 14, a support frame 17 being mounted on the screw rod 15, and one end of the screw rod 15 being connected to a motor 20.

[0025] Preferably, the crank arm 4 is provided with an oil hole 7, and the oil hole 7 is provided with multiple groups. By providing the oil hole 7, lubricating oil can be added into the device through the oil hole 7 to prevent the device from rusting. The extension buckle 14 is symmetrically provided with two groups, and a slide bar 16 is installed in the extension buckle 14. The slide bar 16 is fixedly installed in the support frame 17. By providing the slide bar 16, the moving direction of the extension buckle 14 can be guided. By providing the support frame 17, the stability of the slide bar 16 is increased, and the power of the device during use is guaranteed.

[0026] Preferably, the support frame 17 is symmetrically provided with two groups, and a mounting hole 18 is opened in the support frame 17, and a plurality of mounting holes 18 are provided. By opening the mounting holes 18, it is convenient for the user to limit and fix the support frame 17, thereby avoiding the problem of difficult installation of the device. Bolts 19 are installed in the mounting holes 18, and a plurality of bolts 19 are provided. The bolts 19 are screwed and fixed to the mounting holes 18. By providing the bolts 19, the stability of the support frame 17 is increased, and the safety of the support frame 17 during use is ensured. A fixing plate 21 is fixedly installed under the motor 20, and one side of the fixing plate 21 is welded and fixed to the support frame 17, thereby increasing the stability of the motor 20 and ensuring the safety of the motor 20 during operation.

[0027] The use principle and use process of the utility model are as follows: when in use, by controlling the operation of the motor 20, the motor 20 drives the screw rod 15 to rotate, and during the rotation of the screw rod 15, the extension buckle 14 is driven to move on the screw rod 15 and the slide rod 16, and during the movement of the extension buckle 14, the U-shaped frame 13 is driven to move, and when the U-shaped frame 13 moves, the small sprocket 9 is driven to move, and the small sprocket 9 is moved to a suitable position. At this time, the chain 10 is pre-tightened, and the device can be pre-tightened and adjusted according to the needs of use, which increases the practicality and convenience of the device, ensures the stability and safety of the device during rotation, and avoids the problem of the chain 10 falling off during the rotation of the device and affecting subsequent work.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] The present invention is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on the spirit and principles of the present invention, and these modifications and variations are also within the scope of the present invention.

Claims

1. A rotationally stable engine crankshaft, characterized in that: The invention comprises a device body (1), wherein the device body (1) comprises a front end (2) and an output end (5), wherein a crank arm (4) is installed on the front end (2) and the output end (5), wherein a balance block (3) is connected to the crank arm (4), wherein a main shaft journal (6) is connected between the balance blocks (3), wherein one side of the front end (2) is connected to a connecting shaft (8), wherein a small sprocket (9) is installed on the connecting shaft (8), wherein the outer shell of the small sprocket (9) is provided with a chain (1 0), a large sprocket (11) is installed on the other side of the chain (10), a rotating shaft (12) is installed in the large sprocket (11), a U-shaped frame (13) is rotatably installed on the small sprocket (9), an extension buckle (14) is provided on the outer side wall of the rear end of the U-shaped frame (13), a screw rod (15) is installed in the extension buckle (14), a support frame (17) is installed on the screw rod (15), and one end of the screw rod (15) is connected to a motor (20).

2. A rotationally stable engine crankshaft according to claim 1, characterized in that: The crank arm (4) is provided with oil holes (7), and the oil holes (7) are provided in multiple groups.

3. A rotationally stable engine crankshaft according to claim 1, characterized in that: The extension buckles (14) are symmetrically arranged in two groups, a slide bar (16) is installed in the extension buckle (14), and the slide bar (16) is fixedly installed in the support frame (17).

4. A rotationally stable engine crankshaft according to claim 1, characterized in that: The support frame (17) is symmetrically arranged in two groups, and mounting holes (18) are opened in the support frame (17), and the mounting holes (18) are arranged in multiple groups.

5. A rotationally stable engine crankshaft according to claim 4, characterized in that: Bolts (19) are installed in the installation holes (18), and a plurality of groups of the bolts (19) are provided. The bolts (19) are screwed and fixed to the installation holes (18).

6. A rotationally stable engine crankshaft according to claim 1, characterized in that: A fixing plate (21) is fixedly installed below the motor (20), and one side of the fixing plate (21) is fixedly welded to the support frame (17).

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