CN201424969Y - Motor gear transmission device - Google Patents

Abstract

The utility model discloses a motor gear transmission device. The device comprises a crank shaft (1), a crank shaft gear (5), a timing gear (2), a camshaft (3) and cam teeth (4), wherein, the axis ofthe crank shaft (1) is parallel to the axis of the camshaft (3), the cam teeth (4) are mounted on the camshaft (3), the crank shaft gear (5) is mounted on the crank shaft (1) and is meshed with the timing gear (2), and the timing gear (2) is meshed with the cam teeth (4) through a gear assembly. By adopting the full teeth transmission, the device has small power loss, steady and reliable transmission, low noise, small abrasion and low vibration of the whole machine, and can be used on various types of motors.

Description

The engine gear transmission device

Technical field

The utility model belongs to technical field of engines, specifically, relates in particular to the gear drive on the motor.

Background technique

Camshaft is the vitals on the motor, by the continuous rotation of camshaft, promotes valve stem and moves up and down, and then the switching and the firing time of control valve.The rotation of camshaft provides power by bent axle, and in the conventional construction, bent axle drives camshaft by push rod or chain, and wherein push rod kind of drive noise is big, easily weares and teares, and the complete machine vibrations are bigger, poor-performing; Have deficiencies such as noise is big, performance is unreliable and chain transmission mode is too late, and kinetic equation loss is big, and slot takes place easily, the rate of fault height easily causes the motor locking, thereby influences the usability and the working life of motor.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of can effectively reduce noise, and stable drive, reliable engine gear transmission device.

The technical solution of the utility model is as follows: a kind of engine gear transmission device, comprise bent axle, crankshaft gear, timing gear, camshaft and cam tooth, wherein the axis of bent axle parallels with the axis of camshaft, cam tooth is installed on camshaft, crankshaft gear is installed on the bent axle, this crankshaft gear and timing gear engagement, its key is: described timing gear are by Gear combination and the engagement of described cam tooth.

Adopt above technological scheme, between timing gear and the cam tooth by all-gear drive, compare with the push rod or the chain-driven mode of conventional construction, the utility model stable drive, reliable, kinetic equation loss is little, and noise is low, and the complete machine vibrations are little, and not easy to wear, can guarantee the usability and the working life of motor.

For simplified structure, convenient for assembly, and ensure that bent axle is to driven off by shaft synchronism of cam and reliability, the said gear combination comprises first gear, second gear and the 3rd gear, wherein first gear and timing gear are installed on same first jack shaft, second gear engagement on this first gear and second jack shaft, the 3rd gear engagement on described second gear and the 3rd jack shaft, and the 3rd gear also meshes with cam tooth.

Above-mentioned second gear and the 3rd gear all are installed on the corresponding axle by lining.Be assemblied on the axle by lining to cog, wear-resisting property is good, shakes for a short time, and noise is low, and speed-raising is fast.

Beneficial effect: the utility model is owing to adopt the full-depth tooth transmission, and not only kinetic equation loss is little, stable drive, reliable, and also noise is low, wearing and tearing are little, and the complete machine vibrations are little, can use on the motor of number of different types.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, the utility model is made of parts such as bent axle 1, timing gear 2, camshaft 3, cam tooth 4, crankshaft gear 5, first gear 6, second gear 7, the 3rd gear 8, first jack shaft 9, second jack shaft 10, the 3rd jack shaft 11 and linings 12, wherein bent axle 1, crankshaft gear 5, first jack shaft 9, timing gear 2 and first gear 6 are installed in the crankcase, second jack shaft 10 and second gear 7 are installed in the cylinder, and the 3rd jack shaft 11, the 3rd gear 8, cam tooth 4 and camshaft 3 are installed in the cylinder head.The axis of described bent axle 1, first jack shaft 9, second jack shaft 10, the 3rd jack shaft 11 and camshaft 3 five is parallel to each other, on bent axle 1, overlap crankshaft gear 5 admittedly, timing gear 2 engagements of installing on this crankshaft gear 5 and first jack shaft 9, first gear 6 is set on the next door of timing gear 2, this first gear 6 also is set on first jack shaft 9, and first gear 6 and 7 engagements of second gear.Described second gear 7 is sleeved on second jack shaft 10 by lining 12, second gear 7 and 8 engagements of the 3rd gear.Described the 3rd gear 8 is sleeved on the 3rd jack shaft 11 by lining 12, cam tooth 4 engagements of installing on the 3rd gear 8 and the camshaft 3.

In the utility model, when bent axle 1 is rotated in the forward, bent axle 1 drives crankshaft gear 5 and rotates synchronously, crankshaft gear 5 drives timing gear 2 and 9 counterrotatings of first jack shaft, makes also backward rotation of first gear 6, when first gear 6 rotates, driving second gear 7 is rotated in the forward, second gear 7 drives the 3rd gear 8 backward rotation again, and the 3rd gear 8 is rotated in the forward by cam tooth 4 drive camshafts 3, to realize valve switching and the control of firing time.

Claims (3)

1, a kind of engine gear transmission device, comprise bent axle (1), crankshaft gear (5), timing gear (2), camshaft (3) and cam tooth (4), wherein the axis of bent axle (1) parallels with the axis of camshaft (3), go up installation cam tooth (4) at camshaft (3), bent axle (1) is gone up crankshaft gear (5) is installed, this crankshaft gear (5) and timing gear (2) engagement is characterized in that: described timing gear (2) are by Gear combination and described cam tooth (4) engagement.

2, engine gear transmission device according to claim 1, it is characterized in that: described Gear combination comprises first gear (6), second gear (7) and the 3rd gear (8), wherein first gear (6) is installed on same first jack shaft (9) with timing gear (2), second gear (7) engagement on this first gear (6) and second jack shaft (10), the 3rd gear (8) engagement on described second gear (7) and the 3rd jack shaft (11), and the 3rd gear (8) also meshes with cam tooth (4).

3, engine gear transmission device according to claim 1 is characterized in that: described second gear (7) and the 3rd gear (8) all are installed on the corresponding axle by lining (12).

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