CN203730697U - Easy-to-assemble meshing gear for transmission of tractor - Google Patents

Abstract

The utility model belongs to the technical field of transmission fittings, and particularly relates to an easy-to-assemble meshing gear for a transmission of a tractor. The technical problems of difficulty in assembly and the like of the prior art are solved. The meshing gear comprises a first gear body and a second gear body, wherein a barrel-shaped connecting body is arranged between the first and second gear bodies; a first reinforcing convex ring is arranged between the end, close to the barrel-shaped connecting body, of the first gear body and the side part of the barrel-shaped connecting body; a second reinforcing convex ring is arranged between the end, close to the barrel-shaped connecting body, of the second gear body and the side part of the barrel-shaped connecting body; the external diameter of the first reinforcing convex ring is equal to that of the second reinforcing convex ring; a third reinforcing ring is arranged on the middle part of the outer wall of the barrel-shaped connecting body; two annular correction grooves are formed in the side part of the third reinforcing ring. Compared with the prior art, the meshing gear has the advantages of easiness in assembly and long service life.

Description

Easily assembly type tractor speed changer engaging gear

Technical field

The utility model belongs to speed changer accessory technical field, especially relates to a kind of easily assembly type tractor speed changer engaging gear.

Background technique

Speed changer is can fix or stepping changes the gear drive of output shaft and input shaft velocity ratio, claim again gearbox, for changing the device of the machine run speed such as lathe, automobile, tractor or tractive force, the gears different by many diameter form, and are conventionally contained between the driving shaft and driven shaft of motor.Further, speed changer is made up of driving mechanism and gear, can be made into independent gear or attaches together in same housing with driving mechanism.The large multiplex ordinary gear transmission of driving mechanism, what also have uses Planetary Gear Transmission.Ordinary gear transmission shifting mechanism is generally used shifting slide gear and clutch etc.; Engaging gear is generally set on line shaft, it is indispensable parts in speed changer, be mainly used in realizing the speed change of multiple gears, it there is following defect in existing engaging gear: structural strength low and difficult installation and assembling, virtually increase cost of production and reduced the efficiency of production and assembly, poor practicability and cannot meet usage requirement.

Model utility content

The purpose of this utility model is for the problems referred to above, a kind of long service life is provided and is easy to the easy assembly type tractor speed changer engaging gear assembling.

For achieving the above object, the utility model has adopted following technical proposal: this easy assembly type tractor speed changer engaging gear comprises gear body, axial centre at gear body is provided with axis hole, on gear body, be provided with and be positioned at the circular orientation step at aperture place, axis hole one end and the circumferential locating slot of being located at the axis hole the other end and axially extending internally along axis hole, the length of described circumferential locating slot is 1/3 of axis hole length, on shaft hole inner wall, be provided with oil-bearing structure, this gear body comprises the first gear mass and the second gear mass, between the first gear mass and the second gear mass, be provided with tubular connecting body, the first described gear mass, the second gear mass and tubular connecting body are connected as a single entity structure, the tip diameter of the first described gear mass is 1-3 times of the second gear mass tip diameter, the number of teeth of the first described gear mass is the odd-multiple of the second gear mass number of teeth, between the first gear mass is near one end of tubular connecting body and the sidepiece of tubular connecting body, be provided with the first reinforcement bulge loop, between the second gear mass is near one end of tubular connecting body and the sidepiece of tubular connecting body, be provided with the second reinforcement bulge loop, the first described external diameter of strengthening bulge loop equates with the second external diameter of strengthening bulge loop, outer wall middle part at tubular connecting body is provided with the 3rd stiffening ring, between the first described reinforcement bulge loop and the 3rd stiffening ring, form the first annular lightening grooves, between the second described reinforcement bulge loop and the 3rd stiffening ring, form the second annular lightening grooves, be provided with two annular calibration tanks at the sidepiece of the 3rd stiffening ring.Snap in described annular calibration tank when completing after preliminary assembling by correction cubing, thereby adjust.

In this application, circular orientation step and two annular calibration tanks can significantly improve to be produced and efficiency of assembling, and what guarantee was produced continues to carry out; Circumferentially locating slot can ensure circumferentially difficult rotation the after the application assembles, in addition, the number of teeth of the first gear mass be the second gear mass number of teeth odd-multiple its can improve the gear ratio value of gear, thereby raising transmission efficiency, good stability and practical, secondly, the first reinforcement bulge loop, the first reinforcement bulge loop and the 3rd stiffening ring can improve the application's structural strength, further ensure working life.

In above-mentioned easy assembly type tractor speed changer engaging gear, one end of described relative the second gear mass of the first gear mass has the first circular groove, one end at relative the first gear mass of the second gear mass has the second circular groove, on the first gear mass, be provided with the first through hole that some even circumferentials distribute and are communicated with the first described circular groove respectively, on the second gear mass, be provided with the second through hole that some even circumferentials distribute and are communicated with the second described circular groove respectively.This structure is mainly to reduce manufacturing cost, saves material.

In above-mentioned easy assembly type tractor speed changer engaging gear, the groove depth of described annular calibration tank is 5mm, and groove width is 6mm.

In above-mentioned easy assembly type tractor speed changer engaging gear, described oil-bearing structure comprises some annular oil storage tanks along the axial discrete arrangement of axis hole, between two adjacent annular oil storage tanks, be provided with connectivity slot, the groove depth of described annular oil storage tank is less than the groove depth of connectivity slot.This structure can be used between the application and line shaft lubricated, further ensures working life.

Compared with prior art, this easily the advantage of assembly type tractor speed changer engaging gear be: 1, simple in structure and be easy to manufacture, cost is low; 2, circular orientation step and two annular calibration tanks can significantly improve production and efficiency of assembling, and what guarantee was produced continues to carry out; 3, circumferentially locating slot can ensure that the application rotates being circumferentially difficult for after assembling, in addition, the number of teeth of the first gear mass be the second gear mass number of teeth odd-multiple its can improve the gear ratio value of gear, thereby improve transmission efficiency, good stability and practical; 4, the first reinforcement bulge loop, the first reinforcement bulge loop and the 3rd stiffening ring can improve the application's structural strength, further ensure working life.

Brief description of the drawings

Fig. 1 is the structural representation that the utility model provides.

In figure, gear body 1, axis hole 11, circular orientation step 12, circumferential locating slot 13, annular oil storage tank 14, connectivity slot 15, the first gear mass 2, the first reinforcement bulge loop 21, the first annular lightening grooves 22, the first circular groove 2a, the first through hole 2b, the second gear mass 3, the second reinforcement bulge loop 31, the second annular lightening grooves 32, the second circular groove 3a, the second through hole 3b, tubular connecting body 4, the 3rd stiffening ring 41, annular calibration tank 41a.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.

As shown in Figure 1, this easy assembly type tractor speed changer engaging gear comprises gear body 1, be provided with axis hole 11 in the axial centre of gear body 1, on gear body 1, be provided with and be positioned at the circular orientation step 12 at axis hole 11 aperture, one end places and the circumferential locating slot 13 of being located at axis hole 11 the other ends and axially extending internally along axis hole 11, the length of described circumferential locating slot 13 is 1/3 of axis hole 11 length, on axis hole 11 inwalls, be provided with oil-bearing structure, concrete, this oil-bearing structure comprises some annular oil storage tanks 14 along axis hole 11 axial discrete arrangements, between two adjacent annular oil storage tanks 14, be provided with connectivity slot 15, the groove depth of described annular oil storage tank 14 is less than the groove depth of connectivity slot 15,

Optimized project, the gear body 1 of the present embodiment comprises the first gear mass 2 and the second gear mass 3, between the first gear mass 2 and the second gear mass 3, be provided with tubular connecting body 4, the first described gear mass 2, the second gear mass 3 and tubular connecting body 4 are connected as a single entity structure, the tip diameter of the first described gear mass 2 is 1-3 times of the second gear mass 3 tip diameters, the number of teeth of the first described gear mass 2 is the odd-multiple of second gear mass 3 numbers of teeth, between the first gear mass 2 is near one end of tubular connecting body 4 and the sidepiece of tubular connecting body 4, be provided with the first reinforcement bulge loop 21, between the second gear mass 3 is near one end of tubular connecting body 4 and the sidepiece of tubular connecting body 4, be provided with the second reinforcement bulge loop 31, the first described external diameter of strengthening bulge loop 21 equates with the second external diameter of strengthening bulge loop 31, outer wall middle part at tubular connecting body 4 is provided with the 3rd stiffening ring 41, between the first described reinforcement bulge loop 21 and the 3rd stiffening ring 41, form the first annular lightening grooves 22, between the second described reinforcement bulge loop 31 and the 3rd stiffening ring 41, form the second annular lightening grooves 32, be provided with two annular calibration tank 41a at the sidepiece of the 3rd stiffening ring 41, the groove depth of this annular calibration tank 41a is 5mm, groove width is 6mm,

In order to reduce production costs, one end at relative second gear mass 3 of the first gear mass 2 of the present embodiment has the first circular groove 2a, one end at relative the first gear mass 2 of the second gear mass 3 has the second circular groove 3a, on the first gear mass 2, be provided with the first through hole 2b that some even circumferentials distribute and are communicated with the first described circular groove 2a respectively, on the second gear mass 3, be provided with the second through hole 3b that some even circumferentials distribute and are communicated with the second described circular groove 3a respectively.

Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendments or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although more used the terms such as gear body 1, axis hole 11, circular orientation step 12, circumferential locating slot 13, annular oil storage tank 14, connectivity slot 15, the first gear mass 2, the first reinforcement bulge loop 21, the first annular lightening grooves 22, the first circular groove 2a, the first through hole 2b, the second gear mass 3, the second reinforcement bulge loop 31, the second annular lightening grooves 32, the second circular groove 3a, the second through hole 3b, tubular connecting body 4, the 3rd stiffening ring 41, annular calibration tank 41a herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.

Claims (4)

1. an easy assembly type tractor speed changer engaging gear, comprise gear body (1), be provided with axis hole (11) in the axial centre of gear body (1), on gear body (1), be provided with the circumferential locating slot (13) that is positioned at the circular orientation step (12) at axis hole (11) aperture, one end place and is located at axis hole (11) the other end and axially extends internally along axis hole (11), the length of described circumferential locating slot (13) is 1/3 of axis hole (11) length, on axis hole (11) inwall, be provided with oil-bearing structure, it is characterized in that, described gear body (1) comprises the first gear mass (2) and the second gear mass (3), between the first gear mass (2) and the second gear mass (3), be provided with tubular connecting body (4), described the first gear mass (2), the second gear mass (3) and tubular connecting body (4) are connected as a single entity structure, the tip diameter of described the first gear mass (2) is 1-3 times of the second gear mass (3) tip diameter, the number of teeth of described the first gear mass (2) is the odd-multiple of the second gear mass (3) number of teeth, between the first gear mass (2) is near one end of tubular connecting body (4) and the sidepiece of tubular connecting body (4), be provided with the first reinforcement bulge loop (21), between the second gear mass (3) is near one end of tubular connecting body (4) and the sidepiece of tubular connecting body (4), be provided with the second reinforcement bulge loop (31), the first described external diameter of strengthening bulge loop (21) equates with the second external diameter of strengthening bulge loop (31), outer wall middle part at tubular connecting body (4) is provided with the 3rd stiffening ring (41), between the first described reinforcement bulge loop (21) and the 3rd stiffening ring (41), form the first annular lightening grooves (22), between the second described reinforcement bulge loop (31) and the 3rd stiffening ring (41), form the second annular lightening grooves (32), be provided with two annular calibration tanks (41a) at the sidepiece of the 3rd stiffening ring (41).

2. easy assembly type tractor speed changer engaging gear according to claim 1, it is characterized in that, one end of described relative the second gear mass of the first gear mass (2) (3) has the first circular groove (2a), there is the second circular groove (3a) in one end of relative the first gear mass of the second gear mass (3) (2), on the first gear mass (2), be provided with the first through hole (2b) that some even circumferentials distribute and are communicated with described the first circular groove (2a) respectively, on the second gear mass (3), be provided with the second through hole (3b) that some even circumferentials distribute and are communicated with described the second circular groove (3a) respectively.

3. easy assembly type tractor speed changer engaging gear according to claim 1 and 2, is characterized in that, the groove depth of described annular calibration tank (41a) is 5mm, and groove width is 6mm.

4. easy assembly type tractor speed changer engaging gear according to claim 1 and 2, it is characterized in that, described oil-bearing structure comprises some annular oil storage tanks (14) along the axial discrete arrangement of axis hole (11), between adjacent two annular oil storage tanks (14), be provided with connectivity slot (15), the groove depth of described annular oil storage tank (14) is less than the groove depth of connectivity slot (15).