Balance shaft assembly

Abstract

The utility model relates to the technical field of balance shafts, and discloses a balance shaft assembly which comprises a balance shaft body, a gear is arranged on the outer surface of the balance shaft body, a driving bevel gear is fixedly sleeved on the outer surface of a rotating shaft, four driven bevel gears are movably meshed on the outer surface of the driving bevel gear, and the four driven bevel gears are arranged on the outer surface of the rotating shaft. First threaded rods are fixedly connected to the outer surfaces of the four driven bevel gears, threaded cylinders are in threaded connection to the outer surfaces of the first threaded rods, four limiting holes are formed in the outer surface of the gear in a circumferential array mode, and four sliding blocks are fixedly connected to the outer surface of the gear in a circumferential array mode; four sliding grooves are formed in the outer surface of the left end of the balance shaft body. According to the balance shaft assembly, the driving bevel gear is driven by the rotating shaft to enable the driven bevel gear to rotate, the first threaded rod is driven to be matched with the threaded cylinder and the limiting hole, the gear is prevented from slipping through cooperation of the sliding groove and the sliding block, and the gear is convenient to disassemble and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing shafts, in particular to a balancing shaft assembly. Background Art

[0002] When the engine is working, it usually uses the reciprocating motion of the piston to drive the connecting rod to drive the crankshaft to rotate, so as to achieve the purpose of output. However, during the rotation of the crankshaft, the connecting rod will swing within a certain angle range, causing uneven force acting on the crankshaft by the connecting rod. Since the crankshaft has inertia during the rotation process, the engine is prone to vibration when working, resulting in unstable operation. For this reason, an engine balance shaft gear assembly is required to eliminate the vibration generated when the engine is working.

[0003] The gears of the existing engine balance shaft gear assembly rotate and drive the balance shaft body to rotate to eliminate the vibration generated when the engine is working, but the connection end between the gear and the balance shaft body is prone to slipping, thereby affecting the rotation effect of the gear driving the balance shaft body. If the gear and the balance shaft are welded, when the gear is damaged, the entire body needs to be replaced, which increases the maintenance cost. Therefore, a balance shaft assembly is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a balance shaft assembly to solve the problems mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a balancing shaft assembly, including a balancing shaft body, a gear is arranged on the outer surface of the balancing shaft body, a rotating shaft is rotatably penetrated on the left outer surface of the balancing shaft body, an active bevel gear is fixedly sleeved on the outer surface of the rotating shaft, four driven bevel gears are movably meshed on the outer surface of the active bevel gear, the outer surfaces of the four driven bevel gears are fixedly connected with a first threaded rod, the outer surfaces of the first threaded rod are threadedly connected with a threaded cylinder, four limiting holes are arranged on the outer surface of the gear in a circumferential array, four sliders are fixedly connected on the outer surface of the gear in a circumferential array, four sliding grooves are arranged on the outer surface of the left end of the balancing shaft body, and the outer surfaces of the four sliders are respectively slidably connected to the inside of the four sliding grooves.

[0006] Furthermore, a fixed shaft is movably inserted into the outer surface of the right side of the balancing shaft body, an eccentric block is fixedly connected to the outer surface of the fixed shaft, two limit grooves are provided on the outer surface of the fixed shaft, and a second threaded rod is threadedly penetrated through the front and rear outer surfaces of the balancing shaft body, the second threaded rod is located inside the balancing shaft body and is rotatably connected to a connecting plate, two transverse grooves are provided on the outer surface of the connecting plate, sliding bars are movably connected to the inner surfaces of the two transverse grooves, the outer surface of the sliding bar is fixedly connected to the limit block, the inner surfaces of the two transverse grooves are fixedly connected to a spring, and the other end of the spring is fixedly connected to the limit block.

[0007] Furthermore, a fixing plate is fixedly connected to the outer surface of the threaded cylinder, a limiting rod is movably inserted into the outer surface of the fixing plate, and the limiting rod is fixedly connected to the inside of the balancing shaft body.

[0008] Furthermore, a rotating frame is fixedly connected to the interior of the balancing shaft body, and the first threaded rod rotates and penetrates the outer surface of the rotating frame.

[0009] Furthermore, a slide bar is fixedly connected to the interior of the transverse groove, the limit block is movably sleeved on the outer surface of the slide bar, and the spring is sleeved on the outer surface of the slide bar.

[0010] Furthermore, both the front and rear outer surfaces of the balancing shaft body are provided with receiving grooves, and the sliding bar is slidably connected to the inside of the receiving grooves.

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

[0012] 1. The balancing shaft assembly drives the active bevel gear through the rotating shaft to rotate the driven bevel gear, drives the first threaded rod to cooperate with the threaded cylinder and the limiting hole, and prevents the gear from slipping through the cooperation of the sliding groove and the sliding block, and facilitates the disassembly and replacement of the gear.

[0013] 2. The balancing shaft assembly drives the connecting plate through the second threaded rod, and cooperates with the slide bar, spring, limit block and limit groove to limit the fixed shaft, so as to facilitate the replacement or installation of the eccentric block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a left-side structural schematic diagram of the utility model;

[0015] Figure 2 It is a right side structural schematic diagram of the utility model;

[0016] Figure 3 This is a schematic diagram of the partial structure of the utility model in front view and section;

[0017] Figure 4 This is a schematic diagram of the gear structure of the utility model;

[0018] Figure 5 It is a right side sectional schematic diagram of the partial structure of the utility model;

[0019] Figure 6 For this utility model Figure 5 The enlarged structural diagram at A in the middle;

[0020] Figure 7 This is a schematic diagram of the eccentric block of the utility model and its related structures.

[0021] In the figure: 1. balancing shaft body; 2. gear; 3. rotating shaft; 4. driving bevel gear; 5. driven bevel gear; 6. first threaded rod; 7. threaded cylinder; 8. limiting hole; 9. fixed shaft; 10. eccentric block; 11. limiting groove; 12. second threaded rod; 13. connecting plate; 14. slide bar; 15. limiting block; 16. spring; 17. slide groove; 18. slider. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Please refer to Figure 1-Figure 7 The utility model provides a technical solution: a balancing shaft assembly, including a balancing shaft body 1, a gear 2 is arranged on the outer surface of the balancing shaft body 1, a rotating shaft 3 is rotatably penetrated through the outer surface of the left side of the balancing shaft body 1, a driving bevel gear 4 is fixedly sleeved on the outer surface of the rotating shaft 3, four driven bevel gears 5 are movably meshed on the outer surface of the driving bevel gear 4, the outer surfaces of the four driven bevel gears 5 are fixedly connected with a first threaded rod 6, the outer surfaces of the first threaded rod 6 are threadedly connected with a threaded cylinder 7, the outer surface of the gear 2 is provided with four limiting holes 8 in a circumferential array, the outer surface of the gear 2 is fixedly connected with four sliding blocks 18 in a circumferential array, the outer surface of the left end of the balancing shaft body 1 is provided with four sliding blocks The outer surfaces of the four sliders 18 are respectively slidably connected with the inner parts of the four slide grooves 17. In this embodiment, the gear 2 is installed so that the four sliders 18 of the gear 2 correspond to the four slide grooves 17 respectively, and the gear 2 is sleeved on the balance shaft body 1, and then the rotating shaft 3 is rotated. The rotating shaft 3 rotates to drive the active bevel gear 4 to rotate, and the active bevel gear 4 drives the driven bevel gear 5 to rotate so that the first threaded rod 6 rotates, thereby moving the threaded barrel 7, and moving the threaded barrel 7 into the limiting hole 8 to limit the gear 2. Under the dual action of the threaded barrel 7 and the slide groove 17 of the slider 18, the gear 2 is prevented from slipping, and the gear 2 can be easily disassembled and replaced by rotating the rotating shaft 3 in the opposite direction.

[0024] A fixed shaft 9 is movably inserted into the outer surface of the right side of the balancing shaft body 1, and an eccentric block 10 is fixedly connected to the outer surface of the fixed shaft 9. Two limit grooves 11 are provided on the outer surface of the fixed shaft 9. The outer surfaces of the front and rear sides of the balancing shaft body 1 are threaded with a second threaded rod 12. The second threaded rod 12 is located inside the balancing shaft body 1 and is rotatably connected to a connecting plate 13. The outer surface of the connecting plate 13 is provided with two transverse grooves. The inner surfaces of the two transverse grooves are movably connected with a slide bar 14. The outer surface of the slide bar 14 is fixedly connected to a limit block 15. The inner surfaces of the two transverse grooves are fixedly connected with a spring 16. The spring 16 The other end is fixedly connected to the limit block 15. In the present embodiment, when the eccentric mass 10 is installed, the fixed shaft 9 is inserted into the balancing shaft body 1, and the slide bar 14 is squeezed toward the same side. The two slide bars 14 compress the spring 16, so that the limit block 15 moves inward. The second threaded rod 12 is rotated, and the threaded rod drives the connecting plate 13 so that the two limit blocks 15 enter the limit groove 11. The slide bar 14 is released. Under the elastic force of the spring 16, the two slide bars 14 move toward both sides respectively, thereby limiting the fixed shaft 9. When the eccentric mass 10 needs to be replaced, the second threaded rod 12 is rotated in the opposite direction.

[0025] A fixing plate is fixedly connected to the outer surface of the threaded barrel 7, and a limiting rod is movably inserted into the outer surface of the fixing plate. The limiting rod is fixedly connected to the inside of the balancing shaft body 1. In this embodiment, when the threaded rod rotates, the threaded barrel 7 is driven to move, so that the fixing plate slides on the surface of the limiting rod, thereby preventing the threaded barrel 7 from rotating with the rotation of the threaded rod.

[0026] A rotating frame is fixedly connected to the interior of the balancing shaft body 1 , and the first threaded rod 6 rotates and penetrates the outer surface of the rotating frame. In this embodiment, the first threaded rod 6 is supported by the rotating frame.

[0027] A slide rod is fixedly connected to the inside of the transverse groove, a limit block 15 is movably sleeved on the outer surface of the slide rod, and a spring 16 is sleeved on the outer surface of the slide rod. In this embodiment, the limit block 15 moves stably under the action of the slide rod, and the spring 16 is prevented from tilting and deforming under the action of the slide rod.

[0028] Receiving grooves are provided on the front and rear outer surfaces of the balancing shaft body 1 , and the slide bar 14 is slidably connected to the inside of the receiving groove. In this embodiment, the receiving groove provides space for the movement of the slide bar 14 .

[0029] Working principle: When the utility model is in use, the gear 2 is installed so that the four sliders 18 of the gear 2 correspond to the four slide grooves 17 respectively, the gear 2 is sleeved on the balance shaft body 1, and then the rotating shaft 3 is rotated. The rotation of the rotating shaft 3 drives the active bevel gear 4 to rotate, and the active bevel gear 4 drives the driven bevel gear 5 to rotate so that the first threaded rod 6 rotates, thereby moving the threaded barrel 7, and moving the threaded barrel 7 into the limiting hole 8 to limit the gear 2. Under the dual action of the threaded barrel 7 and the slide grooves 17 of the slider 18, the gear 2 is prevented from slipping, and the gear 2 can be easily disassembled and replaced by rotating the rotating shaft 3 in the opposite direction.

[0030] When installing the eccentric weight 10, insert the fixed shaft 9 into the balancing shaft body 1, squeeze the slide bar 14 toward the same side, the two slide bars 14 compress the spring 16, and move the limit block 15 inward, rotate the second threaded rod 12, and the threaded rod drives the connecting plate 13 to make the two limit blocks 15 enter the limit groove 11, release the slide bar 14, and under the elastic force of the spring 16, the two slide bars 14 move to both sides respectively, thereby limiting the fixed shaft 9. When the eccentric weight 10 needs to be replaced, rotate the second threaded rod 12 in the opposite direction.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A balancing shaft assembly, comprising a balancing shaft body (1), characterized in that: The outer surface of the balancing shaft body (1) is provided with a gear (2); the left outer surface of the balancing shaft body (1) is rotatably penetrated by a rotating shaft (3); the outer surface of the rotating shaft (3) is fixedly sleeved with an active bevel gear (4); the outer surface of the active bevel gear (4) is movably meshed with four driven bevel gears (5); the outer surfaces of the four driven bevel gears (5) are all fixedly connected with a first threaded rod (6); the outer surfaces of the first threaded rod (6) are all threadedly connected with a threaded cylinder (7); the outer surface of the gear (2) is provided with four limiting holes (8) in a circumferential array; the outer surface of the gear (2) is fixedly connected with four sliding blocks (18) in a circumferential array; the left end outer surface of the balancing shaft body (1) is provided with four sliding grooves (17); the outer surfaces of the four sliding blocks (18) are respectively slidably connected with the inside of the four sliding grooves (17).

2. A balancing shaft assembly according to claim 1, characterized in that: A fixed shaft (9) is movably inserted into the right outer surface of the balancing shaft body (1), and an eccentric block (10) is fixedly connected to the outer surface of the fixed shaft (9). Two limit grooves (11) are provided on the outer surface of the fixed shaft (9). Second threaded rods (12) are threadedly penetrated through the front and rear outer surfaces of the balancing shaft body (1). The second threaded rod (12) is located inside the balancing shaft body (1) and is rotatably connected to a connecting plate (13). Two transverse grooves are provided on the outer surface of the connecting plate (13). The inner surfaces of the two transverse grooves are movably connected to sliding bars (14). The outer surface of the sliding bar (14) is fixedly connected to a limit block (15). The inner surfaces of the two transverse grooves are fixedly connected to a spring (16). The other end of the spring (16) is fixedly connected to the limit block (15).

3. A balancing shaft assembly according to claim 1, characterized in that: A fixing plate is fixedly connected to the outer surface of the threaded cylinder (7), a limiting rod is movably inserted into the outer surface of the fixing plate, and the limiting rod is fixedly connected to the inside of the balance shaft body (1).

4. A balancing shaft assembly according to claim 1, characterized in that: The interior of the balancing shaft body (1) is fixedly connected to a rotating frame, and the first threaded rod (6) rotates and penetrates the outer surface of the rotating frame.

5. A balancing shaft assembly according to claim 2, characterized in that: The interior of the transverse groove is fixedly connected with a slide rod, the limit block (15) is movably sleeved on the outer surface of the slide rod, and the spring (16) is sleeved on the outer surface of the slide rod.

6. A balance shaft assembly according to claim 2, characterized in that: The outer surfaces of both the front and rear sides of the balancing shaft body (1) are provided with receiving grooves, and the sliding strip (14) is slidably connected to the inside of the receiving groove.

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