Crankshaft with roller bearing

Abstract

The utility model relates to the technical field of mechanical engineering, in particular to a crankshaft with a roller bearing, which comprises a left crank, a right crank and a working component, the working component comprises a crank pin, a connecting rod bearing, an assembling frame, two locking structures, a plug connector, a connecting rod and a flat drive, when the connecting rod is damaged, locking nuts on two sides of the assembling frame are twisted to enable a screw rod to rotate, and the connecting rod is driven to rotate. The screw rotates to drive the telescopic rod to contract, the telescopic rod contracts to drive the connecting plate to be matched with the limitation of the guiding piece so that the locking piece can be far away from the inserting piece, then the connecting rod with the complete function is inserted into the assembling frame through the inserting piece, and locking nuts on the two sides of the assembling frame are twisted so that the screw can drive the telescopic rod to extend. And the connecting plate is driven to be matched with the limitation of the guide piece, so that the locking piece is inserted into the inserting piece, and therefore, the problem that the connecting rod cannot be independently replaced when the connecting rod is damaged due to the fact that the connecting rod is fixedly arranged on the connecting rod big-end bearing in the existing crank connecting rod assembly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a crankshaft with a roller bearing. Background Art

[0002] The main function of the crankshaft is to convert the reciprocating linear motion of the piston into circular rotational motion, and transmit the force of the piston to the output shaft to drive other parts of the engine. However, the existing crank torque output is moderate and cannot meet the needs of high-speed engines.

[0003] The prior art (CN201354796Y) discloses a crank-connecting rod assembly, comprising a left crank, a right crank, a crank pin and a connecting rod. The connecting rod is fixedly arranged on the connecting rod big end bearing and is rotatably arranged on the crank pin through the big end bearing. The big end of the connecting rod is located between the left and right cranks. The three are connected by a crank pin. The axes of the left and right cranks are in a straight line and parallel to the axis of the crank pin. By changing the parameters of the crank-connecting rod assembly, the functional requirements of a small off-road motorcycle engine with fast acceleration, strong explosive power, large torque and high crankshaft speed are met.

[0004] However, in the above manner, since the connecting rod is fixedly arranged on the connecting rod big end bearing, it is impossible to replace the connecting rod separately when the connecting rod is damaged. Utility Model Content

[0005] The purpose of the utility model is to provide a crankshaft with a roller bearing, aiming to solve the problem of the existing crank-connecting rod assembly that the connecting rod is fixedly arranged on the connecting rod big end bearing and therefore cannot be replaced separately when the connecting rod is damaged.

[0006] To achieve the above object, the present invention provides a crankshaft with roller bearings, comprising a left crank, a right crank and a working assembly, wherein the right crank is located on one side of the left crank.

[0007] The working assembly includes a crank pin, a connecting rod bearing, an assembly frame, two locking structures, a connector, a connecting rod and a horizontal drive;

[0008] The crank pin is fixedly connected to the left crank and the right crank, respectively, and is located between the left crank and the right crank; the connecting rod bearing is rotatably connected to the crank pin and is located on one side of the crank pin; the assembly frame is fixedly connected to the connecting rod bearing and is located on one side of the connecting rod bearing; the two locking structures are respectively located on both sides of the assembly frame; the locking structure includes a locking nut, a screw, a telescopic rod, a connecting plate, a guide member and a locking member; the locking nut is rotatably connected to the assembly frame and is located on one side of the assembly frame; The screw is fixedly connected to the locking nut and is located on one side of the locking nut; the telescopic rod is threadedly connected to the screw and is located on one side of the screw; the connecting plate is fixedly connected to the telescopic rod and is located on one side of the telescopic rod; the guide members are respectively arranged between the connecting plate and the assembly frame; the locking member is arranged on one side of the connecting plate; the connector is located inside the assembly frame; the connecting rod is fixedly connected to the connector and is located on one side of the connector; the flat drive is fixedly arranged on one side of the right crank.

[0009] Wherein, the guide member includes a guide sleeve and a guide rod, the guide sleeve is fixedly connected to the assembly frame and is located on one side of the assembly frame; the guide rod is slidably connected to the guide sleeve and fixedly connected to the connecting plate and is located on one side of the guide sleeve.

[0010] Wherein, the locking member includes a connecting block and a locking pin, the connecting block is fixedly connected to the connecting plate and is located on one side of the connecting plate; the locking pin is fixedly connected to the connecting block and is located on one side of the connecting block.

[0011] The connector includes a connecting portion and a plug-in block. The connecting portion is fixedly connected to the connecting rod and is located on one side of the connecting rod. The plug-in block is fixedly connected to the connecting portion and is located on one side of the assembly frame.

[0012] Wherein, the working component further includes a roller bearing, and the roller bearing is arranged on one side of the horizontal drive.

[0013] The cam is fixedly mounted on the support frame and the guide frame is provided with a plurality of guide wheels, and the cam is fixedly mounted on the support frame, and the guide wheel is fixedly mounted on the support frame, so that the cam can be fixedly mounted on the support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 The utility model is a structural schematic diagram of a crank pin, a connecting rod bearing, an assembly frame, a locking structure, a connector and a connecting rod.

[0017] Figure 3 It is a front view of the crank pin, connecting rod bearing, assembly frame, locking structure, connector and connecting rod of the utility model.

[0018] Figure 4 It is a cross-sectional view of the assembly frame, locking structure and connector of the utility model.

[0019] 101-left crank, 102-right crank, 103-crank pin, 104-connecting rod bearing, 105-assembly frame, 106-locking structure, 107-connector, 108-connecting rod, 109-flat drive, 110-roller bearing, 111-guide sleeve, 112-guide rod, 113-connecting block, 114-locking pin, 115-connecting part, 116-connecting block, 117-locking nut, 118-screw, 119-telescopic rod, 120-connecting plate, 121-guide, 122-locking piece. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] See also Figures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of the utility model. Figure 2 This is a schematic structural diagram of the crank pin, connecting rod bearing, assembly frame, locking structure, connector and connecting rod 108 of the present invention. Figure 3 This is a front view of the crank pin, connecting rod bearing, assembly frame, locking structure, connector and connecting rod 108 of the present invention. Figure 4 It is a cross-sectional view of the assembly frame, locking structure and connector of the utility model.

[0022] The present invention provides a crankshaft with roller bearings, comprising a left crank 101, a right crank 102 and a working assembly, wherein the working assembly comprises a crank pin 103, a connecting rod bearing 104, an assembly frame 105, two locking structures 106, a connector 107, a connecting rod 108, a flat drive 109 and a roller bearing 110, wherein the locking structure 106 comprises a locking nut 117, a screw 118, a telescopic rod 119, a connecting plate 120, a guide member 121 and a locking member 122, wherein the guide member 121 comprises a guide sleeve 111 and a guide rod 112, the locking member 122 comprises a connecting block 113 and a locking pin 114, and the connector 107 comprises a connecting portion 115 and a connector block 116. The above-mentioned solution solves the problem of the existing crank-connecting rod assembly that the connecting rod 108 cannot be replaced separately when it is damaged because the connecting rod 108 is fixedly arranged on the connecting rod big end bearing.

[0023] According to this specific embodiment, the right crank 102 is located on one side of the left crank 101 , and the left crank 101 and the right crank 102 cooperate with the working component to form a crank assembly.

[0024] The crank pin 103 is fixedly connected to the left crank 101 and the right crank 102, respectively, and is located between the left crank 101 and the right crank 102; the connecting rod bearing 104 is rotatably connected to the crank pin 103 and is located on one side of the crank pin 103; the assembly frame 105 is fixedly connected to the connecting rod bearing 104 and is located on one side of the connecting rod bearing 104; the two locking structures 106 are respectively located on both sides of the assembly frame 105; the locking nut 117 is rotatably connected to the assembly frame 105 and is located on one side of the assembly frame 105 The screw 118 is fixedly connected to the locking nut 117 and is located on one side of the locking nut 117; the telescopic rod 119 is threadedly connected to the screw 118 and is located on one side of the screw 118; the connecting plate 120 is fixedly connected to the telescopic rod 119 and is located on one side of the telescopic rod 119; the guide members 121 are respectively arranged between the connecting plate 120 and the assembly frame 105; the locking member 122 is arranged on one side of the connecting plate 120; the plug-in member 107 is located inside the assembly frame 105; the connecting rod 108 is connected to the plug-in member 107; 107 is fixedly connected and is located on one side of the connector 107; the flat drive 109 is fixedly arranged on one side of the right crank 102. When the connecting rod 108 is damaged during use, the locking nuts 117 on both sides of the assembly frame 105 are twisted to rotate the screw 118. The rotation of the screw 118 drives the telescopic rod 119 to retract. The contraction of the telescopic rod 119 drives the connecting plate 120 to cooperate with the restriction of the guide member 121 to make the locking member 122 away from the connector 107, and then the connecting rod 108 can be pulled out. Then, the fully functional The connecting rod 108 is inserted into the assembly frame 105 through the connector 107, and the locking nuts 117 on both sides of the assembly frame 105 are twisted respectively so that the screw 118 drives the telescopic rod 119 to extend, and drives the connecting plate 120 to cooperate with the restriction of the guide member 121 so that the locking member 122 is inserted into the connector 107, and the replacement of the connecting rod 108 is completed, thereby solving the problem of the existing crank-connecting rod assembly that the connecting rod 108 cannot be replaced separately when it is damaged because the connecting rod 108 is fixed on the connecting rod big end bearing.

[0025] Secondly, the guide sleeve 111 is fixedly connected to the assembly frame 105 and is located on one side of the assembly frame 105; the guide rod 112 is slidably connected to the guide sleeve 111 and is fixedly connected to the connecting plate 120 and is located on one side of the guide sleeve 111. The guide sleeve 111 is used to support the sliding of the guide rod 112, and the sliding of the guide rod 112 is used to limit the position of the connecting plate 120 when it moves, so that the connecting plate 120 can smoothly drive the locking member 122 to move.

[0026] Again, the connecting block 113 is fixedly connected to the connecting plate 120 and is located on one side of the connecting plate 120; the locking pin 114 is fixedly connected to the connecting block 113 and is located on one side of the connecting block 113. The connecting block 113 is used to support the assembly of the locking pin 114, and the locking pin 114 is used to be inserted into the connector 107 to complete the fixation of the connecting rod 108.

[0027] In addition, the connecting portion 115 is fixedly connected to the connecting rod 108 and is located on one side of the connecting rod 108; the plug-in block 116 is fixedly connected to the connecting portion 115 and is located on one side of the assembly frame 105. The connecting portion 115 is used to support the assembly of the plug-in block 116, and the plug-in block 116 is used to be inserted into the assembly frame 105 to assemble the connecting rod 108.

[0028] Furthermore, the roller bearing 110 is provided on one side of the flat drive 109. The roller bearing 110 cooperates with the flat drive 109 to support the crank pin 103. The crank assembly can withstand a large radial load through the roller bearing 110 under high-speed operation, and the rolling friction is small, thereby increasing the service life of the crank assembly.

[0029] When using the present invention, the left crank 101 and the right crank 102 cooperate with the flat drive 109 to assemble the crank pin 103 and the connecting rod bearing 104 to form a crank assembly to support the rotation of the connecting rod 108, and the roller bearing 110 cooperates with the flat drive 109 to support the crank pin 103. The crank assembly can withstand a large radial load through the roller bearing 110 under high-speed operation, and the rolling friction is small, thereby increasing the service life of the crank assembly. When the connecting rod 108 is damaged during use, the locking nuts 117 on both sides of the assembly frame 105 are twisted to rotate the screw 118. The rotation of the screw 118 drives the telescopic rod 119 to retract. The retraction of the telescopic rod 119 drives the connecting plate 120 to cooperate with the restriction of the guide member 121 so that The locking pin 114 on the connecting block 113 is away from the plug-in block 116, and then the connecting rod 108 is pulled out, and then the connecting rod 108 with good function is inserted into the assembly frame 105 through the plug-in block 116 on the connecting part 115, and the locking nuts 117 on both sides of the assembly frame 105 are twisted respectively so that the screw 118 drives the telescopic rod 119 to extend, and drives the connecting plate 120 to cooperate with the restriction of the guide member 121 so that the locking pin 114 on the connecting block 113 is inserted into the plug-in block 116, and the connecting rod 108 can be replaced, thereby solving the problem of the existing crank-connecting rod assembly that the connecting rod 108 cannot be replaced separately when it is damaged because the connecting rod 108 is fixed on the connecting rod big end bearing.

[0030] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A crankshaft with a roller bearing, comprising a left crank and a right crank, wherein the right crank is located on one side of the left crank; characterized in that: Also includes working components, The working assembly includes a crank pin, a connecting rod bearing, an assembly frame, two locking structures, a connector, a connecting rod and a horizontal drive; The crank pin is fixedly connected to the left crank and the right crank, respectively, and is located between the left crank and the right crank; the connecting rod bearing is rotatably connected to the crank pin and is located on one side of the crank pin; the assembly frame is fixedly connected to the connecting rod bearing and is located on one side of the connecting rod bearing; the two locking structures are respectively located on both sides of the assembly frame; the locking structure includes a locking nut, a screw, a telescopic rod, a connecting plate, a guide member and a locking member; the locking nut is rotatably connected to the assembly frame and is located on one side of the assembly frame; The screw is fixedly connected to the locking nut and is located on one side of the locking nut; the telescopic rod is threadedly connected to the screw and is located on one side of the screw; the connecting plate is fixedly connected to the telescopic rod and is located on one side of the telescopic rod; the guide members are respectively arranged between the connecting plate and the assembly frame; the locking member is arranged on one side of the connecting plate; the connector is located inside the assembly frame; the connecting rod is fixedly connected to the connector and is located on one side of the connector; the flat drive is fixedly arranged on one side of the right crank.

2. A crankshaft with roller bearings according to claim 1, characterized in that: The guide member includes a guide sleeve and a guide rod. The guide sleeve is fixedly connected to the assembly frame and is located on one side of the assembly frame. The guide rod is slidably connected to the guide sleeve and fixedly connected to the connecting plate and is located on one side of the guide sleeve.

3. A crankshaft with roller bearings according to claim 2, characterized in that: The locking member includes a connecting block and a locking pin. The connecting block is fixedly connected to the connecting plate and is located on one side of the connecting plate. The locking pin is fixedly connected to the connecting block and is located on one side of the connecting block.

4. A crankshaft with roller bearings according to claim 3, characterized in that: The connector includes a connecting portion and a plug-in block. The connecting portion is fixedly connected to the connecting rod and is located on one side of the connecting rod; the plug-in block is fixedly connected to the connecting portion and is located on one side of the assembly frame.

5. A crankshaft with roller bearings according to claim 1, characterized in that: The working assembly further includes a roller bearing, and the roller bearing is arranged on one side of the horizontal drive.

Images