Inertia force balancing assembly and crank connecting rod mechanism

Abstract

The utility model discloses an inertia force balance assembly and a crank connecting rod mechanism, and belongs to the technical field of crank connecting rod mechanisms, the inertia force balance assembly comprises a crankshaft flywheel set, a piston connecting rod set and a balance set, the crankshaft flywheel set comprises a driving gear, a plurality of main journals, a plurality of crank arms and a flywheel which are connected in sequence, and the balance set comprises a balance assembly and a balance shaft. The balance assembly comprises a balance block and an auxiliary balance block fixed to the balance block, bearings are installed at the two ends of the balance shaft, and the two bearings are sleeved with a driven gear and a driven wheel respectively, and the driven gear and the driven wheel are matched with the driving gear and the flywheel. The adjustable balance shaft is arranged, the spring is connected between the driven gear and the bearing and between the driven gear and the bearing, when inertia force generated when the crankshaft drives the piston to move acts on the balance shaft, the driven gear at the two ends of the balance shaft and the spring in the driven gear are compressed, counter-acting force is generated on the piston, and therefore the inertia force is adjusted to be balanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of crank-connecting rod mechanism, specifically relating to an inertial force balancing component and a crank-connecting rod mechanism. Background Technology

[0002] The function of the crankshaft and connecting rod mechanism is to provide a combustion environment, converting the expansion pressure of the gas acting on the piston top after fuel combustion into the torque of the crankshaft rotation, continuously outputting power. The crankshaft and connecting rod mechanism is the main moving part of the engine to realize the working cycle and complete the energy conversion. In the power stroke, it converts the heat energy generated by fuel combustion into mechanical energy through the reciprocating motion of the piston and the rotational motion of the crankshaft, and outputs power to the outside. In other strokes, it relies on the rotational inertia of the crank and flywheel to drive the piston up and down through the connecting rod, creating conditions for the next power stroke. It is generally composed of three parts: the engine block assembly, the piston and connecting rod assembly, and the crankshaft and flywheel assembly.

[0003] Crankshaft connecting rod mechanisms are usually equipped with balancing components, which typically consist of balance weights and balance shafts. Balance shafts are usually fixed and cannot be adjusted according to the inertia generated during equipment operation. For unbalanced crankshafts, a counterweight is often added to the heavier side or a portion of the mass is removed from the crank to achieve balance. However, existing balance weights cannot be increased in weight according to the balancing force required by the equipment, resulting in insufficient balancing effect. Utility Model Content

[0004] The purpose of this invention is to provide an inertial force balancing component and a crank-connecting rod mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an inertial force balancing assembly and a crank-connecting rod mechanism, comprising a crankshaft-flywheel assembly, a piston-connecting rod assembly, and a balancing assembly. The crankshaft-flywheel assembly includes a driving gear, multiple main journals, multiple crank arms, and a flywheel connected in sequence. The balancing assembly includes a balancing component and a balancing shaft. The balancing component includes a balancing block and a secondary balancing block fixed on the balancing block. Bearings are installed at both ends of the balancing shaft. A driven gear and a driven wheel that cooperate with the driving gear and the flywheel are respectively sleeved on the outside of the two bearings. Springs are installed between the driven gear and the driven wheel and the bearings.

[0006] Preferably, the plurality of crank arms are arranged in pairs, a crank pin is installed between two crank arms, and the two sets of crank arms are fixedly connected by a main shaft journal.

[0007] Preferably, the drive gear and flywheel are respectively installed at the ends of the main journals located at both ends, the balance block is fixed to one side of the crank arm, and the balance block has a fan-shaped structure.

[0008] Preferably, the piston-connecting rod assembly includes a piston and a connecting rod, the piston is mounted on the end of the connecting rod, and a connecting bearing is mounted on the other end of the connecting rod, and the connecting bearing is sleeved on the crank pin.

[0009] Preferably, the bearing has a mounting hole, the spring is installed in the mounting hole, and the inner sides of the driven gear and the driven wheel are provided with slots for the spring to be installed.

[0010] Preferably, both the balance block and the auxiliary balance block are provided with mounting holes, and fixing bolts are screwed into the mounting holes, and the balance block and the auxiliary balance block are fixedly connected by the fixing bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] (1) This utility model sets an adjustable balance shaft and connects springs between the driven gear and the driven wheel and the bearing. When the inertial force generated by the crankshaft driving the piston to move acts on the balance shaft, the springs in the driven gear and the driven wheel at both ends of the balance shaft are compressed, generating a reaction force on the piston, thereby reducing the inertial force of the piston movement, thereby adjusting and balancing the inertial force.

[0013] (2) By setting up a secondary balance block, which is installed on the fixed bolt by a fixing bolt, the size and weight of the secondary balance block can be selected according to the specific balancing force required by the equipment, so as to achieve a better balancing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front view of the driven gear of this utility model;

[0016] Figure 3 This is a front view of the driven wheel of this utility model;

[0017] Figure 4 This is a front view of the bearing of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the balancing component of this utility model. Figure 1 ;

[0019] Figure 6 This is a schematic diagram of the structure of the balancing component of this utility model. Figure 2 .

[0020] In the diagram: 1-Driven gear; 2-Driving gear; 3-Balance weight; 31-Mounting hole; 32-Fixing bolt; 4-Piston; 5-Crank pin; 6-Connecting rod; 7-Flywheel; 8-Main journal; 9-Crank arm; 10-Driven wheel; 11-Bearing; 12-Balance shaft; 13-Spring; 14-Mounting hole; 15-Secondary balance weight. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-6 As shown, this utility model provides the following technical solution: an inertial force balancing assembly and a crank-connecting rod mechanism, including a crankshaft flywheel assembly, a piston-connecting rod assembly and a balancing assembly. The crankshaft flywheel assembly includes a driving gear 2, multiple main journals 8, multiple crank arms 9 and a flywheel 7 connected in sequence. The balancing assembly includes a balancing component and a balancing shaft 12. The balancing component includes a balancing block 3 and a secondary balancing block 15 fixed on the balancing block 3. Bearings 11 are installed at both ends of the balancing shaft 12. Driven gears 1 and driven wheels 10 that cooperate with the driving gear 2 and the flywheel 7 are respectively sleeved on the outside of the two bearings 11. Springs 13 are installed between the driven gears 1 and the driven wheels 10 and the bearings 11.

[0023] The drive gear 2 and flywheel 7 are respectively installed at the ends of the main shaft journal 8 located at both ends, and the balance block 3 is fixed to one side of the crank arm 9, and the balance block 3 has a fan-shaped structure.

[0024] Both the balance block 3 and the auxiliary balance block 15 are provided with mounting holes 31. Fixing bolts 32 are screwed into the mounting holes 31, and the balance block 3 and the auxiliary balance block 15 are fixedly connected by the fixing bolts 32.

[0025] In response to the above, when using the inertial force balancing assembly and crank-connecting rod mechanism, the crankshaft flywheel assembly is installed on the body assembly of the external equipment. When the piston-connecting rod assembly moves, the crank arm 9 rotates accordingly. The crankshaft flywheel assembly converts the gas force transmitted from the piston-connecting rod assembly into the rotational torque of the crankshaft, which is output externally and drives the valve train and other auxiliary devices of the external equipment. The balance block 3 and the balance shaft 12 balance the inertial force generated by the piston-connecting rod assembly. When the crank arm 9 rotates, the driven gear 1 and the driven wheel 10 mesh with the driving gear 2 and the flywheel 7, so that the inertial force generated by the piston-connecting rod assembly acts on the balance shaft 12. The spring 13 in the driven gear 1 and the driven wheel 10 is compressed by the inertial force, generating a reaction force on the piston-connecting rod assembly, thereby adjusting and balancing the inertial force.

[0026] When it is necessary to increase the weight of balance weight 3, such as Figure 5 and Figure 6 As shown, select a suitable weight of secondary balance block 15, and install the secondary balance block 15 on the balance block 3 through the cooperation of mounting hole 31 and fixing bolt 32, so as to achieve better balance.

[0027] Specifically, such as Figure 1 As shown, multiple crank arms 9 are arranged in pairs, with at least one pair. A crank pin 5 is installed between two crank arms 9, and the two sets of crank arms 9 are fixedly connected by a main shaft journal 8. The crankshaft flywheel assembly provides the combustion site, converting the expansion pressure of the gas generated after fuel combustion on the piston connecting rod assembly into the torque of crankshaft rotation, continuously outputting power.

[0028] Specifically, such as Figure 1 As shown, the piston-connecting rod assembly includes a piston 4 and a connecting rod 6. The piston 4 is also provided with piston rings and a piston pin. The piston 4 is installed at the end of the connecting rod 6, and a connecting bearing is installed at the other end of the connecting rod 6. The connecting bearing is sleeved on the crank pin 5. The piston 4, together with the cylinder head, cylinder wall, etc. of the engine block assembly, forms the combustion chamber and bears the gas pressure in the cylinder. The force is transmitted to the connecting rod through the piston pin to drive the crankshaft to rotate.

[0029] In addition, such as Figures 2-4 As shown, in this utility model, the bearing 11 has a mounting hole 14, the spring 13 is installed in the mounting hole 14, and the inner sides of the driven gear 1 and the driven wheel 10 are provided with slots for the spring 13 to be installed. The mounting hole 14 and the slots correspond to each other, which facilitates the installation of the spring 13.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inertial force balancing assembly and a crank-connecting rod mechanism, characterized in that: The system includes a crankshaft flywheel assembly, a piston connecting rod assembly, and a balance assembly. The crankshaft flywheel assembly includes a drive gear (2), multiple main journals (8), multiple crank arms (9), and a flywheel (7) connected in sequence. The balance assembly includes a balance component and a balance shaft (12). The balance component includes a balance block (3) and a secondary balance block (15) fixed on the balance block (3). Both ends of the balance shaft (12) are equipped with bearings (11). The two bearings (11) are respectively fitted with driven gears (1) and driven wheels (10) that cooperate with the drive gear (2) and the flywheel (7). Springs (13) are installed between the driven gears (1) and driven wheels (10) and the bearings (11).

2. The inertial force balancing assembly and crank-connecting rod mechanism according to claim 1, characterized in that: Multiple crank arms (9) are arranged in pairs, and a crank pin (5) is installed between two crank arms (9). The two sets of crank arms (9) are fixedly connected by a main shaft journal (8).

3. The inertial force balancing assembly and crank-connecting rod mechanism according to claim 1, characterized in that: The drive gear (2) and flywheel (7) are respectively installed at the ends of the main shaft journals (8) located at both ends. The balance block (3) is fixed to one side of the crank arm (9), and the balance block (3) has a fan-shaped structure.

4. The inertial force balancing assembly and crank-connecting rod mechanism according to claim 2, characterized in that: The piston-connecting rod assembly includes a piston (4) and a connecting rod (6). The piston (4) is installed at the end of the connecting rod (6), and a connecting bearing is installed at the other end of the connecting rod (6), and the connecting bearing is sleeved on the crank pin (5).

5. The inertial force balancing assembly and crank-connecting rod mechanism according to claim 1, characterized in that: The bearing (11) has a mounting hole (14) on it, the spring (13) is installed in the mounting hole (14), and the driven gear (1) and the driven wheel (10) both have slots on their inner sides for the spring (13) to be installed.

6. The inertial force balancing assembly and crank-connecting rod mechanism according to claim 1, characterized in that: Both the balance block (3) and the sub-balance block (15) are provided with mounting holes (31), and fixing bolts (32) are screwed into the mounting holes (31), and the balance block (3) and the sub-balance block (15) are fixedly connected by fixing bolts (32).

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