阅读说明：本技术 一种发动机两级齿轮传动装置 (A kind of two stepped gearing of engine ) 是由 沈琼 蒙小聪 陈晓克 于 2019-07-31 设计创作，主要内容包括：本发明公开一种发动机两级齿轮传动装置,其特征在于：包括串联设置在空压机(1)主轴上的空压机齿轮(2)和转向泵驱动齿轮(5),所述空压机齿轮(2)与发动机上的凸轮轴齿轮(6)啮合,转向泵驱动齿轮(5)与设置在转向泵(4)主轴上的转向泵齿轮(3)啮合。本发明目的在于提供一种结构紧凑加工简单的同时,实现空压机、转向泵不同速比的传动的发动机两级齿轮传动装置。(The present invention discloses a kind of two stepped gearing of engine, it is characterized by comprising the air compressor machine gear (2) being arranged in series on air compressor machine (1) main shaft and turn to pump driver gear (5), the air compressor machine gear (2) is engaged with the cam shaft gear (6) on engine, is turned to pump driver gear (5) and is engaged with the steering pump gear (3) being arranged on steering pump (4) main shaft.It is an object of that present invention to provide it is a kind of it is compact-sized the processing is simple while, realize air compressor machine, steering pump difference speed ratio transmission two stepped gearing of engine.)

1. a kind of two stepped gearing of engine, it is characterised in that: including the sky being arranged in series on air compressor machine (1) main shaft Press gear (2) and steering pump driver gear (5), the air compressor machine gear (2) are nibbled with the cam shaft gear (6) on engine It closes, turns to pump driver gear (5) and engaged with the steering pump gear (3) being arranged on steering pump (4) main shaft.

2. two stepped gearing of a kind of engine according to claim 1, it is characterised in that: in the air compressor machine (1) conical section (14), cylindrical section (13) and thread segment (12) are disposed on main shaft axially outward along it；The pneumatics The inner hole of machine gear (2) is set as bellmouth, and the bellmouth of the air compressor machine gear (2) can be with interference fit by sliding Mode is arranged on the conical section (14)；The circle is arranged in the steering pump driver gear (5) in a manner of transition fit On shell of column (13)；It is provided with nut (11) on the thread segment (12), the air compressor machine gear (2) and steering pump driver gear (5) it is locked by nut (11).

3. two stepped gearing of a kind of engine according to claim 2, it is characterised in that: the steering pump driving The inner hole of gear (5) is provided with keyway, is provided on the cylindrical section (13) and the keyway phase for turning to pump driver gear (5) Matched key.

4. two stepped gearing of a kind of engine according to claim 2, it is characterised in that: the nut (11) Tightening direction is consistent with the direction of rotation of the air compressor machine gear (2).

5. two stepped gearing of a kind of engine according to claim 2, it is characterised in that: the air compressor machine gear (2) front end face is provided with the inner hole for stepping down to steering pump driver gear (5) rear end face.

6. two stepped gearing of a kind of engine according to claim 1, it is characterised in that: the air compressor machine gear It (2) is clearance elimination gear, including main tooth (22) and secondary tooth (23), being provided between main tooth (22) and secondary tooth (23) makes main tooth (22) The circlip relatively rotated with secondary tooth (23)；Main tooth (22) and secondary tooth (23) pass through positioning screw (21) to tooth.

7. two stepped gearing of a kind of engine according to claim 6, it is characterised in that: the steering pump driving The maximum radius of gear (5) is less than the radial distance of the positioning screw (21) and air compressor machine (1) spindle centerline.

Technical field

The present invention relates to engine component technical field, specifically a kind of two stepped gearing of engine.

Background technique

On most of commercial vehicle, air compressor machine and steering pump require to obtain power from engine at work, this is just needed A set of power transmission is wanted, the power that engine crankshaft exports can be directly passed to air compressor machine and steering pump.Steering pump Speed ratio it is higher than the speed ratio of air compressor machine, it is necessary to the adjusting of speed ratio is realized by gear drive, however single gear transmission accounts for Space does not meet the design principle of six engine of state.In addition, alternating load can be passed to pneumatics in gear drive by air compressor machine Machine gear, gear clearance cause gear rattle to generate grating of gears, inflate process abnormal sound so as to cause air compressor machine.

Summary of the invention

For above-mentioned existing defect, it is an object of that present invention to provide it is a kind of it is compact-sized the processing is simple while, realize empty Press, steering pump difference speed ratio transmission two stepped gearing of engine.

Technical scheme is as follows:

A kind of two stepped gearing of engine including the air compressor machine gear being arranged in series on air compressor machine main shaft and turns To pump driver gear, the air compressor machine gear is engaged with the cam shaft gear on engine, turns to pump driver gear and setting exists Steering pump gear engagement on steering pump main shaft.

The principle of the present invention is: be installed in series two gears on air compressor crank, an air compressor machine gear, a steering Pump driver gear.Air compressor machine gear and steering pump driver gear are fixedly mounted on air compressor machine main shaft, and it is solid to turn to pump gear installation It is scheduled on steering pump main shaft, cam shaft gear drives air compressor machine gear, and air compressor machine gear drives the rotation of air compressor machine main shaft, air compressor machine Main shaft, which drives, turns to pump driver gear rotation, turns to pump driver gear and engages with pump gear is turned to, therefore, cam shaft gear driving Air compressor machine, steering pump rotation, by adjusting air compressor machine gear, turn to pump driver gear, turn to three gears of pump gear the number of teeth, Realize the adjustment of air compressor machine speed ratio and steering pump speed ratio.Being arranged in series for two gears, meets steering pump to engine spindle Center is drawn close, compact-sized, the not super vehicle crossbeam of engine width, compact-sized.

Specifically, being disposed with conical section, cylindrical section and spiral shell axially outward along it on the main shaft of the air compressor machine Line section；The inner hole of the air compressor machine gear is set as bellmouth, and the bellmouth of the air compressor machine gear can be with mistake by sliding The mode of cooperation of being full of is arranged on the conical section；The circle is arranged in the steering pump driver gear in a manner of transition fit On shell of column；Nut is provided on the thread segment, the air compressor machine gear and steering pump driver gear are by nut check.

Specifically, the inner hole for turning to pump driver gear is provided with keyway, it is provided on the cylindrical section and described turn The key to match to the keyway of pump driver gear.It turns to pump driver gear to compress by both ends of the surface axially position, be transmitted by key Torque.

Specifically, the tightening direction of the nut is consistent with the direction of rotation of the air compressor machine gear.It is revolved in engine When turning to drive air compressor machine rotation, it is ensured that nut will not reversely rotate release.

Specifically, the front end face of the air compressor machine gear is provided with for stepping down to the steering pump driver gear rear end face Inner hole, further have compressed axial space.

Specifically, the air compressor machine gear is clearance elimination gear, including main tooth and secondary tooth, it is provided between main tooth and secondary tooth The circlip for relatively rotating main tooth and secondary tooth；Main tooth and secondary tooth pass through positioning screw to tooth.

Air compressor machine gear, air compressor machine gear and camshaft are passed to since air compressor machine generates alternating load during inflating There are gear clearances for gear, and shock is generated under alternate load effect, form grating of gears, pass to air compressor machine, air compressor machine pair Outer sending abnormal sound, therefore, air compressor machine gear use clearance elimination gear, and main tooth effect is transmitting torque, and secondary tooth effect is to eliminate gear Gap is realized and eliminates gear clearance effect, weakens grating of gears, to eliminate air compressor machine abnormal sound.

Specifically, the maximum radius for turning to pump driver gear is less than the positioning screw and air compressor machine spindle centerline Radial distance.It is arranged by the positional relationship of above-mentioned steering pump driver gear and positioning screw, ensure that steering pump sliding tooth The outer circle of wheel cannot interfere with the head of screw of positioning screw, be convenient to the assembly and disassembly of positioning screw.

Beneficial effects of the present invention:

1, the present invention two gears of series connection on air compressor crank, are able to satisfy steering pump and draw close to engine crankshaft center, Compact-sized, the not super vehicle crossbeam of engine width is compact-sized, while can be realized air compressor machine, steering pump difference speed ratio, and zero The processing is simple for part, and mounting and adjusting is convenient；

2, air compressor machine gear uses clearance elimination gear, realizes and eliminates gear clearance effect, weakens grating of gears, to eliminate sky Press abnormal sound.

Detailed description of the invention

Fig. 1 is the main view of two stepped gearing of the embodiment of the present invention.

Fig. 2 is the side view of two stepped gearing of the embodiment of the present invention.

Fig. 3 is the top view of two stepped gearing of the embodiment of the present invention.

Fig. 4 is the front view of air compressor machine of the embodiment of the present invention.

Fig. 5 is the side view of air compressor machine of the embodiment of the present invention.

Fig. 6 is the cross-sectional view of air compressor machine of the embodiment of the present invention.

In figure, 1- air compressor machine, 2- air compressor machine gear, 3- turns to pump gear 4- steering pump, and 5- turns to pump driver gear, and 6- is convex Wheel axle gear, 11- nut, 12- thread segment, 13- cylindrical section, 14- conical section, 21- positioning screw, the main tooth of 22-, 23- pair tooth.

Specific embodiment

To explain the technical content, the achieved purpose and the effect of the present invention in detail, with reference to embodiments and cooperate attached drawing It is explained.

Two stepped gearing of a kind of engine as shown in Figs. 1-3, including air compressor machine 1, steering pump 4, air compressor machine tooth Wheel 2 turns to pump gear 3, turns to pump driver gear 5.Wherein, 5 two gears series connection of air compressor machine gear 2 and steering pump driver gear It is fixedly mounted on the main shaft of air compressor machine 1, turns to pump gear 3 and be fixed on the main shaft of steering pump 4, turn to pump driver gear 5 engage with pump gear 3 is turned to.Air compressor machine gear 2 is driven by cam shaft gear 6, air compressor machine gear 2 drives 1 main shaft of air compressor machine Rotation, 1 main shaft of air compressor machine, which drives, turns to the rotation of pump driver gear 5, turns to pump driver gear 5 and engages with pump gear 3 is turned to, because This, the cam shaft gear 6 of engine drives air compressor machine 1, steering pump 4 to rotate jointly, and is driven by air compressor machine gear 2, steering pump Gear 5 turns to the totally 3 number of gear teeth adjustment of pump gear 3, can be realized the adjustment of air compressor machine Yu steering pump speed ratio.

As the preferred embodiment of the present embodiment, as shown in fig. 6, in three-stage setting, specially edge on the main shaft of air compressor machine 1 It sets gradually conical section 14, cylindrical section 13 and thread segment 12 axially outward.Air compressor machine gear 2 is axially positioned on by taper hole On the conical section 14 of the main shaft of air compressor machine 1, turns to pump driver gear 5 and be mounted on cylindrical section 13, screw in nut on thread segment 12 11, the pressing force of nut 11 passes to air compressor machine gear 2 by steering pump driver gear 5, and air compressor machine gear 2 passes through pressing force and cone The interference fit transmitting torque of shape section 13, driving air compressor machine 1 rotate.Turn to pump driver gear 5 and 13 transition fit of cylindrical section, cylinder It is provided with key on axis 13, under the pressing force effect of nut 11, pump driver gear 5 is turned to and is compressed by both ends of the surface axially position, Torque is transmitted by key.The tightening direction of nut 11 is consistent with the direction of rotation of air compressor machine gear 2, rotates and drives in engine When air compressor machine 1 rotates, it is ensured that nut 11 will not reversely rotate release.The front end face of air compressor machine gear 2 is provided with for steering The inner hole that 5 rear end face of pump driver gear is stepped down, further has compressed axial space.

As the preferred embodiment of the present embodiment, as shown in Figure 4, Figure 5, air compressor machine gear 2 is set as clearance elimination gear, including master Tooth 22 and secondary tooth 23 are provided with the circlip for relatively rotating main tooth 22 and secondary tooth 23 between main tooth 22 and secondary tooth 23；Main tooth 22 With secondary tooth 23 by positioning screw 21 to tooth.Main tooth 22 is for transmitting torque, and secondary tooth 23 is for eliminating gear clearance, air compressor machine tooth After wheel 2 is engaged with cam shaft gear 6, by removing positioning screw 21, secondary tooth 23 is flicked, and is realized and is eliminated gear clearance effect, subtracts Weak grating of gears, to eliminate the abnormal sound of air compressor machine 1.

In the present embodiment, the maximum radius for turning to pump driver gear 5 is less than positioning screw 21 and 1 main-shaft core of air compressor machine The radial distance of line, it is ensured that the outer circle for turning to pump driver gear 5 cannot interfere with the head of screw of positioning screw 21, guarantee positioning spiral shell 21 assembly and disassembly of nail.

In addition, the preferred embodiment outside as the present embodiment, turns to 3 front end face of pump gear and 2 front end face of air compressor machine gear is suitable At least gap 3mm is kept, prevents rotary course from interfering.

Although above having used specific embodiment, the present invention is described in detail, on basis of the invention On, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, without departing from These modifications or improvements on the basis of spirit of that invention, fall within the scope of the claimed invention.