Detachable assembled crankshaft

Abstract

The invention provides a detachable assembled crankshaft which comprises a plurality of crank mechanisms, an intermediate shaft is arranged between every two adjacent crank mechanisms, and stable assembling assemblies are arranged on the inner sides of the crank mechanisms; the crank mechanism comprises two balance blocks, and connecting shafts are arranged on the opposite sides of the two balance blocks. The stable assembling assembly comprises an assembling rod vertically arranged on the inner wall of the connecting shaft, and two transverse rods are transversely arranged on the circumferential side face of the assembling rod in an up-down sliding mode. According to the detachable assembled crankshaft provided by the invention, a connecting shaft is fixed by matching a cross rod, an assembling rod and an inserting rod with an inserting hole, then an assembled crank mechanism is reinforced by using an inner hexagonal nut and an outer threaded column, and finally, the inserting hole is prevented from falling back automatically by arranging a ratchet wheel and a pawl, so that the assembling efficiency is improved. The possibility that the device is separated in the using process is greatly reduced, and the stability of the assembly type crankshaft is improved.

Description

Technical Field

[0001] The present invention relates to the field of crankshafts, and in particular to a detachable assembled crankshaft. Background Art

[0002] The crankshaft is the engine's primary rotating component, typically made of carbon structural steel, ductile iron, or high-strength alloy steel. It converts the piston's reciprocating motion into its own cyclical rotational motion, absorbs the force transmitted by the connecting rod, and converts it into torque output, driving the engine's accessories. It is the power source for the engine and the entire mechanical system.

[0003] When the engine is working, the piston moves back and forth in a straight line in the cylinder. The explosion of the mixed compressed gas pushes the piston to move. The piston transmits force to the crankshaft through the connecting rod, causing the crankshaft to rotate, converting the linear motion into rotational motion, thereby providing power for vehicles or other equipment.

[0004] The common crankshafts at present are all one-piece, and once any part of the crankshaft is damaged or severely worn, the crankshaft needs to be completely scrapped, and the only option is to replace the entire crankshaft. There is a problem that it is inconvenient to assemble and maintain the transmission crankshaft separately. In the related art, application number: CN202222710267.2 has proposed a split-assembly transmission crankshaft. The design is reasonable, and the crankshaft mechanism can be fixed and spliced through the cooperation of the fixing mechanism and the anti-loosening mechanism, so that the purpose of assembling the crankshaft can be achieved, which is convenient for maintenance of the crankshaft. However, when the device is in use, it only relies on the hexagon socket bolt to be inserted and fixed in the threaded groove opened inside the mounting seat to fix the connecting shaft. Although it is relatively simple and convenient, the crankshaft may cause "slipping" under high-intensity use conditions, which in turn causes the connecting shaft of the device to be separated from the balance block part, resulting in poor stability after the device is assembled.

[0005] Therefore, it is necessary to provide a detachable assembled crankshaft to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a detachable assembled crankshaft, which solves the problem in the related art that the existing partially detachable assembled crankshaft is not convenient for achieving a relatively stable crankshaft structure after assembly during use, resulting in the crankshaft possibly falling off under high-intensity work.

[0007] To solve the above technical problems, the present invention provides a detachable assembled crankshaft, comprising: a plurality of crank mechanisms, an intermediate shaft being provided between two adjacent crank mechanisms, and a stabilizing assembly component being provided inside the crank mechanisms;

[0008] The crank mechanism includes two balancing blocks, and a connecting shaft is provided on opposite sides of the two balancing blocks;

[0009] The stable assembly component includes an assembly rod vertically arranged on the inner wall of the connecting shaft, two cross bars are horizontally arranged on the peripheral side of the assembly rod that can slide up and down, and a plug-in rod is vertically arranged on the side away from each other of the two cross bars. A slot is provided on the inner side of the balance block, and a plug-in hole is provided on the inner side of the slot. Two force-bearing rods are vertically arranged on the inner wall of the connecting shaft in mirror images, and the peripheral side surfaces of the two force-bearing rods correspond to the left sides of the two cross bars for sliding connection.

[0010] Preferably, a rotating screw is rotatably provided on the left side of the assembly rod, a threaded sleeve is slidably provided on the peripheral side of the rotating screw along its length, and a connecting plate is rotatably provided on the top and bottom of the threaded sleeve.

[0011] Preferably, the sides of the two connecting plates that are away from each other are rotatably connected to the peripheral side surfaces of the two cross bars respectively.

[0012] Preferably, a positioning partition plate is provided on the inner side of the slot, a through hole is provided on the inner side of the positioning partition plate, an external threaded column is provided on the left side of the connecting shaft and on the inner side of the through hole, and the left end of the rotating screw rod passes through the inner wall of the connecting shaft and extends to the inner side of the external threaded column.

[0013] Preferably, the peripheral side surface of the external threaded column is threadedly connected with a hexagonal nut, and the hexagonal nut is located on the left side of the positioning partition plate. An anti-slip portion is provided on the left side of the positioning partition plate and on the right side of the hexagonal nut.

[0014] Preferably, a ratchet is provided on the left side of the peripheral side of the rotating screw and on the inner side of the connecting shaft, and a pawl is engaged at the top of the ratchet.

[0015] Preferably, a fixed block is provided on the inner wall of the connecting shaft, the left side of the fixed block is rotatably connected to the right side of the pawl, a connecting column is provided on the left side of the fixed block and below the pawl, a spring is provided on the top of the connecting column, and the top end of the spring is fixedly connected to the bottom of the pawl.

[0016] Preferably, a stowage rod is laterally rotatably provided at the top of the left side of the connecting shaft, a rope is provided at the right end of the stowage rod and located at the top of the pawl, and the bottom end of the rope is fixed to the front side of the top of the pawl.

[0017] Compared with the related art, the detachable assembled crankshaft provided by the present invention has the following beneficial effects:

[0018] The present invention provides a detachable assembled crankshaft. The device fixes the connecting shaft by cooperating with the plug-in hole through a cross bar, an assembly rod and a plug-in rod, and then reinforces the assembled crank mechanism by using a hexagonal nut and an external threaded column. Finally, the ratchet and the pawl are set to prevent the plug-in hole from falling back by itself, which greatly reduces the possibility of the device detaching during use and improves the stability of the assembled crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of a detachable assembled crankshaft provided by the present invention;

[0020] Figure 2 for Figure 1 A schematic structural diagram of a front cross-sectional view of a single crank mechanism shown;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of the structure of area A is shown;

[0022] Figure 4 for Figure 2 An enlarged schematic diagram of the structure of region B is shown;

[0023] Figure 5 for Figure 2 The three-dimensional structural diagram of the connecting shaft part is shown;

[0024] Figure 6 for Figure 5 Schematic diagram of the ratchet part structure shown.

[0025] Numbers in the figure: 1. Crank mechanism; 2. Stabilizing assembly component; 11. Balance block; 12. Connecting shaft; 21. Assembly rod; 22. Cross bar; 23. Plug-in rod; 24. Slot; 25. Plug-in hole; 26. Force rod; 27. Rotating screw; 28. Threaded sleeve; 29. Connecting plate; 3. Positioning partition plate; 4. Externally threaded column; 5. Internal hexagonal nut; 6. Anti-slip part; 70. Ratchet; 701. Pawl; 702. Fixed block; 703. Connecting column; 704. Spring; 705. Stowage rod; 706. Rope. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 ,in Figure 1 A schematic structural diagram of a preferred embodiment of a detachable assembled crankshaft provided by the present invention; Figure 2for Figure 1 A schematic structural diagram of a front cross-sectional view of a single crank mechanism shown; Figure 3 for Figure 2 An enlarged schematic diagram of the structure of area A is shown;

[0028] Figure 4 for Figure 2 An enlarged schematic diagram of the structure of region B is shown; Figure 5 for Figure 2 The three-dimensional structural diagram of the connecting shaft part is shown; Figure 6 for Figure 5 The schematic diagram of the ratchet structure shows a detachable assembled crankshaft, comprising: a plurality of crank mechanisms 1, an intermediate shaft 10 is provided between two adjacent crank mechanisms 1, and a stabilizing assembly component 2 is provided inside the crank mechanism 1;

[0029] The crank mechanism 1 includes two balancing blocks 11 , and a connecting shaft 12 is provided on opposite sides of the two balancing blocks 11 ;

[0030] The stabilizing assembly component 2 includes an assembly rod 21 vertically arranged on the inner wall of the connecting shaft 12. Two cross bars 22 are laterally arranged on the peripheral side of the assembly rod 21 so as to slide up and down. A plug-in rod 23 is vertically arranged on the side away from each other of the two cross bars 22. A slot 24 is provided on the inner side of the balancing block 11, and a plug-in hole 25 is provided on the inner side of the slot 24. Two force-bearing rods 26 are vertically arranged in mirror image form on the upper and lower inner walls of the connecting shaft 12. The peripheral side surfaces of the two force-bearing rods 26 correspond to the left side sliding connections of the two cross bars 22 respectively.

[0031] When the two cross bars 22 move away from each other, the connecting rods 23 on the surfaces of the two cross bars 22 will extend outside the connecting shaft 12, and then the connecting rods 23 will extend and be inserted into the corresponding connecting holes 25. After the connection is completed, when the crankshaft is subjected to left and right forces, the connecting rods 23, cross bars 22, assembly rods 21 and force-bearing rods 26 will share this force, thereby reducing the possibility of falling off.

[0032] A rotating screw rod 27 is rotatably provided on the left side of the assembly rod 21 , and a threaded sleeve 28 is slidably provided on the peripheral side of the rotating screw rod 27 along its length. A connecting plate 29 is rotatably provided on the top and bottom of the threaded sleeve 28 .

[0033] When the plug-in rod 23 needs to be extended, the left side of the rotating screw rod 27 can be fixed by using a clamp on the left side of the balance block 11, and then rotated to the right. When the rotating screw rod 27 rotates to the right, it will drive the threaded sleeve 28 to move to the right on the side surface of the rotating screw rod 27, and then drive the connecting plate 29 to rotate. When the connecting plate 29 rotates, the two cross bars 22 move away from each other on the side surface of the assembly rod 21, thereby extending the plug-in rod 23.

[0034] The sides of the two connecting plates 29 that are away from each other are rotatably connected to the circumferential side surfaces of the two cross bars 22 respectively.

[0035] A positioning partition plate 3 is provided on the inner side of the slot 24, and a through hole is provided on the inner side of the positioning partition plate 3. An external threaded column 4 is provided on the left side of the connecting shaft 12 and on the inner side of the through hole. The left end of the rotating screw 27 passes through the inner wall of the connecting shaft 12 and extends to the inner side of the external threaded column 4.

[0036] In addition, an external threaded column 4 is provided on the left side of the connecting shaft 12, which is inserted into the left side of the positioning partition plate 3 through the external threaded column 4, and then fixed to the left side of the positioning partition plate 3 through the hexagonal nut 5, thereby further improving the stability of the device.

[0037] The peripheral side surface of the external thread column 4 is threadedly connected with a hexagonal nut 5, which is located on the left side of the positioning partition plate 3. An anti-slip portion 6 is provided on the left side of the positioning partition plate 3 and on the right side of the hexagonal nut 5.

[0038] The provision of the anti-slip portion 6 can reduce the possibility of the hexagon socket nut 5 rotating on its own after being fixed.

[0039] A ratchet 70 is provided on the left side of the side surface of the rotating screw 27 and on the inner side of the connecting shaft 12 , and a pawl 701 is engaged at the top of the ratchet 70 .

[0040] By arranging the ratchet 70 and the pawl 701 , the rotating screw rod 27 can only rotate to the right, thereby preventing the plug rod 23 from retracting due to the rotating screw rod 27 rotating on its own.

[0041] A fixed block 702 is provided on the inner wall of the connecting shaft 12, and the left side of the fixed block 702 is rotatably connected to the right side of the pawl 701. A connecting column 703 is provided on the left side of the fixed block 702 and below the pawl 701. A spring 704 is provided on the top of the connecting column 703, and the top of the spring 704 is fixedly connected to the bottom of the pawl 701.

[0042] A stowage rod 705 is rotatably provided at the top of the left side of the connecting shaft 12 , and a rope 706 is provided at the right end of the stowage rod 705 and at the top of the pawl 701 , and the bottom end of the rope 706 is fixed to the front side of the top of the pawl 701 .

[0043] When the device needs to be disassembled, a small wrench can be used to rotate the retracting rod 705, so that the retracting rod 705 rotates to drive the rope 706 to contract, and the pawl 701 rotates upward to overcome the elastic force of the spring 704. At this time, the rotating screw 27 can be rotated to the loose side to retract the plug-in rod 23 into the inside of the slot 24.

[0044] The working principle of the detachable assembled crankshaft provided by the present invention is as follows:

[0045] Step 1: When assembling, insert one end of the connecting shaft 12 into the slot 24 inside the balancing block 11, so that the external threaded column 4 completely passes through the positioning partition plate 3 and the plug-in rod 23 is located at the bottom of the plug-in hole 25;

[0046] Step 2: Fix the left side of the rotating screw rod 27 with a clamp on the left side of the balancing block 11, and then rotate it to the right. When the rotating screw rod 27 rotates to the right, it will drive the threaded sleeve 28 to move to the right on the peripheral side of the rotating screw rod 27, thereby driving the connecting plate 29 to rotate. When the connecting plate 29 rotates, the two cross bars 22 move away from each other on the peripheral side of the assembly rod 21, so that the plug rod 23 extends. The extension of the plug rod 23 will cause the distal end of the plug rod 23 to be inserted into the corresponding plug hole 25. After the plugging is completed, when the crankshaft is subjected to the left and right forces, the plug rod 23, the cross bar 22, the assembly rod 21 and the force-bearing rod 26 will share this force, thereby reducing the possibility of falling off.

[0047] Step 3: By setting the ratchet 70 and the pawl 701, the rotating screw 27 can only rotate to the right, thereby preventing the plug-in rod 23 from retracting due to the rotating screw 27 rotating on its own. After the plug-in is completed, the external threaded column 4 is fixed to the left side of the positioning partition plate 3 by using a tool to fix the internal hexagonal nut 5. This can further improve the stability of the device.

[0048] Step 4: When the device needs to be disassembled, first use a tool to remove the hexagonal nut 5, and then use a small wrench to rotate the retracting rod 705, so that the retracting rod 705 rotates to drive the rope 706 to retract, and the pawl 701 overcomes the elastic force of the spring 704 and rotates upward. Then, at this time, you can use a tool to rotate the rotating screw rod 27 to the loosened side, and the rotating screw rod 27 rotates to drive the threaded sleeve 28 to move to the left, and then cooperate with the connecting plate 29 to pull the two cross bars 22 toward the closer side, so that the plug-in rod 23 is retracted to the inside of the slot 24, disengaged from the plug-in hole 25, and finally pull the connecting shaft 12 to the outside.

[0049] Compared with the related art, the detachable assembled crankshaft provided by the present invention has the following beneficial effects:

[0050] The device fixes the connecting shaft 12 through the cross bar 22, the assembly rod 21 and the plug-in rod 23 in conjunction with the plug-in hole 25, and then reinforces the assembled crank mechanism 1 by using the hexagonal nut 5 and the external threaded column 4. Finally, the ratchet 70 and the pawl 701 are set to prevent the plug-in hole 25 from falling back by itself, which greatly reduces the possibility of the device detaching during use and improves the stability of the assembled crankshaft.

[0051] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A detachable assembled crankshaft, characterized in that: include: A plurality of crank mechanisms (1), wherein an intermediate shaft (10) is provided between two adjacent crank mechanisms (1), and a stabilizing assembly component (2) is provided inside the crank mechanism (1); The crank mechanism (1) comprises two balancing blocks (11), and a connecting shaft (12) is provided on opposite sides of the two balancing blocks (11); The stabilizing assembly component (2) comprises an assembly rod (21) vertically arranged on the inner wall of the connecting shaft (12); two cross bars (22) are horizontally arranged on the peripheral side of the assembly rod (21) so as to be able to slide up and down; a plug-in rod (23) is vertically arranged on the side away from each other of the two cross bars (22); a slot (24) is provided on the inner side of the balancing block (11); a plug-in hole (25) is provided on the inner side of the slot (24); two force-bearing rods (26) are vertically arranged on the inner wall of the connecting shaft (12) in a mirror-image manner; the peripheral side surfaces of the two force-bearing rods (26) correspond to the left sides of the two cross bars (22) and are slidably connected.

2. A detachable assembled crankshaft according to claim 1, characterized in that: A rotating screw rod (27) is rotatably provided on the left side of the assembly rod (21), a threaded sleeve (28) is slidably provided on the peripheral side of the rotating screw rod (27) along its length, and a connecting plate (29) is rotatably provided on the top and bottom of the threaded sleeve (28).

3. A detachable assembled crankshaft according to claim 2, characterized in that: The sides of the two connecting plates (29) that are away from each other are rotatably connected to the circumferential side surfaces of the two cross bars (22) respectively.

4. A detachable assembled crankshaft according to claim 2, characterized in that: A positioning partition plate (3) is provided on the inner side of the slot (24), a through hole is provided on the inner side of the positioning partition plate (3), an external threaded column (4) is provided on the left side of the connecting shaft (12) and on the inner side of the through hole, and the left end of the rotating screw rod (27) passes through the inner wall of the connecting shaft (12) and extends to the inner side of the external threaded column (4).

5. A detachable assembled crankshaft according to claim 4, characterized in that: The peripheral side surface of the external thread column (4) is threadedly connected to a hexagonal nut (5), and the hexagonal nut (5) is located on the left side of the positioning partition plate (3). An anti-slip portion (6) is provided on the left side of the positioning partition plate (3) and on the right side of the hexagonal nut (5).

6. The detachable assembled crankshaft according to claim 2, characterized in that: A ratchet (70) is provided on the left side of the peripheral side of the rotating screw (27) and located on the inner side of the connecting shaft (12), and a ratchet pawl (701) is engaged at the top of the ratchet (70).

7. A detachable assembled crankshaft according to claim 6, characterized in that: A fixing block (702) is provided on the inner wall of the connecting shaft (12), the left side of the fixing block (702) is rotatably connected to the right side of the pawl (701), and a connecting column (703) is provided on the left side of the fixing block (702) and below the pawl (701).

8. The detachable assembled crankshaft according to claim 7, characterized in that: A spring (704) is provided on the top of the connecting column (703), and the top end of the spring (704) is fixedly connected to the bottom end of the pawl (701).

9. The detachable assembled crankshaft according to claim 8, characterized in that: A stowage rod (705) is provided at the top of the left side of the connecting shaft (12) so as to be rotatable in a transverse direction. A rope (706) is provided at the right end of the stowage rod (705) and located at the top of the ratchet (701). The bottom end of the rope (706) is fixed to the front side of the top of the ratchet (701).

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