CN211830451U

CN211830451U - Connecting device for connecting electric motor and hydraulic pump

Info

Publication number: CN211830451U
Application number: CN202020137055.8U
Authority: CN
Inventors: 蒋祖寿
Original assignee: Hangzhou Yipeng Industrial Development Co ltd
Current assignee: Hangzhou Yipeng Industrial Development Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-10-30
Anticipated expiration: 2030-01-21

Abstract

The utility model provides a connecting device for be used for connecting electric motor and hydraulic pump, including first connector and second connector, first connector is including the first locating hole that is used for fixed hydraulic stem, establish the keyway on first locating hole, establish the pinhole in first connector one side and keyway intercommunication, establish the first gear shaping in first connector one end, insert the interior hydraulic stem of first locating hole and pass through the round pin axle fixed connection in the pinhole, the second connector includes the second gear shaping with first gear shaping lock, establish the second locating hole that is used for connecting electric motor rotor in the second connector, establish and be used for reducing tight staple bolt to the second locating hole on the second connector, the second locating hole is the gear hole, adopt gear connection between second connector and the electric motor rotor. Can realize the inter-engagement and stable operation between the hydraulic stem in electric motor rotor and the hydraulic pump, solve traditional excavator and need provide the problem of power through diesel engine, and long service life.

Description

Connecting device for connecting electric motor and hydraulic pump

Technical Field

The utility model relates to the field of machinary, concretely relates to a connecting device for be used for connecting electric motor and hydraulic pump.

Background

In the process of power output, the excavator is directly connected with a hydraulic pump to provide power by a diesel engine, but with continuous innovation of new energy, batteries suitable for high-power use of the excavator are also generated in the market at present, so that power output can be directly realized by supplying power to a motor through the batteries, when power is transmitted between the motor and the hydraulic pump of the excavator, although mutual connection between a motor rotor and a hydraulic rod in the hydraulic pump can be realized through a coupler, when power is provided for the excavator, the phenomena of unstable power output and incapability of large torque are easy to occur due to insufficient engaging force and the like, and the problem of short service life also exists, therefore, a connecting device capable of directly transmitting and transmitting power to the motor and the hydraulic pump in a stable manner needs to be developed.

Disclosure of Invention

In order to solve certain or some technical problem that exists among the prior art, the utility model provides a connecting device for connecting electric motor and hydraulic pump can realize linking up each other and stable operation between the hydraulic stem in electric motor rotor and the hydraulic pump, has solved traditional excavator and need provide the problem of power through diesel engine, and long service life.

For solving the above-mentioned prior art problem, the utility model discloses a following scheme:

a connecting device for connecting an electric motor and a hydraulic pump comprises a first connector for connecting a hydraulic rod and a second connector for connecting a motor rotor, the first connector comprises a first positioning hole for fixing a hydraulic rod, a key groove arranged on the first positioning hole, a pin hole arranged on one side of the first connector and communicated with the key groove, a first gear shaping arranged at one end of the first connector, the hydraulic rod inserted into the first positioning hole is fixedly connected through a pin shaft in the pin hole, the second connector comprises a second gear shaping buckled with the first gear shaping, a second positioning hole arranged in the second connector and used for connecting the motor rotor, and a hoop arranged on the second connector and used for reducing and clamping the second positioning hole, the second positioning hole is a gear hole, and the second connector is connected with the motor rotor through a gear.

Further, the diameter of a base circle of the second positioning hole is 30mm, the number of teeth is 14, the modulus is 2.5, the pressure angle is 20 degrees, and the displacement coefficient is 0.8.

Furthermore, be equipped with elastic connecting piece between first gear shaping with the second gear shaping, elastic connecting piece includes that columniform base member, ring establish the separation tooth in the base member outside, the separation tooth is located adjacent two first gear shaping with between the second gear shaping.

Further, the precision of the first positioning hole is H7, the elastic connecting piece is made of polyurethane, and the hardness is 98 SHA.

Furthermore, the hoop comprises an adjusting groove arranged on the second connector and two threaded holes arranged on the outer side of the second connector and used for screwing screws, and an L-shaped groove is formed in one end, located on the outer side of the second connector, of each threaded hole.

Further, the number of teeth of the first gear shaping and the second gear shaping is 3 or 4, and the number of the blocking teeth is 6 or 8.

Compared with the prior art, the beneficial effects of the utility model reside in that:

can realize linking up each other between the hydraulic stem in electric motor rotor and the hydraulic pump to make the hydraulic stem of electronic motor in direct to the hydraulic pump drive, thereby realize the electricelectric moves the power supply of excavator, no longer need carry out power take off through diesel engine, make the excavator realize electric drive's purpose, changed the power take off form of excavator, make its application scope wider, the environmental protection effect is better, and power take off in-process stability is high, and power is big.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of the present invention;

FIG. 3 is a cross-sectional view taken along line B-B of the present invention;

fig. 4 is an exploded view of the present invention;

in the figure: the connecting device comprises a first connector 1, an elastic connecting piece 2, a first gear shaping 3, a second gear shaping 4, a second connector 5, a hoop 6, a threaded hole 7, an L-shaped groove 8, a first positioning hole 9, a key groove 10, a pin hole 11, a second positioning hole 12, a base body 13, a blocking tooth 14 and an adjusting groove 15.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1 to 4, a connecting device for connecting an electric motor and a hydraulic pump includes a first connector 1 for connecting a hydraulic rod, and a second connector 5 for connecting a motor rotor, wherein the first connector 1 includes a first positioning hole 9 for fixing the hydraulic rod, a key slot 10 provided on the first positioning hole 9, a pin hole 11 provided on one side of the first connector 1 and communicated with the key slot 10, a first gear 3 provided at one end of the first connector 1, the hydraulic rod inserted into the first positioning hole 9 is fixedly connected by a pin shaft in the pin hole 11, the second connector 5 includes a second gear 4 engaged with the first gear 3, a second positioning hole 12 provided in the second connector 5 and used for connecting the motor rotor, and a hoop 6 provided on the second connector 5 and used for clamping the second positioning hole 12 in a reduced manner, the second positioning hole 12 is a gear hole, and the second connector 5 is connected with the motor rotor through a gear.

In the practical use process, after one end of a hydraulic rod in the hydraulic pump extends into a first positioning hole 9 of a first connector 1, the hydraulic rod is inserted into a pin hole 11 through a pin shaft to be connected and fixed with each other, a rotor of an electric motor extends into a second positioning hole 12 in a second connector 5, a hoop 6 is enabled to act after being screwed through screws and the like, the aperture of the second positioning hole 12 is reduced, and the clamping purpose is finally achieved, the torsion force is transmitted between the first connector 1 and the second connector 5 through the interaction of first inserting teeth 3 and second inserting teeth 4, the actual torque is large due to the fact that power required by an excavator is too large in the power transmission process, the connecting holes in a conventional coupler are generally unthreaded holes or holes with key grooves 10, the phenomenon of slipping or key grooves 10 damage is easy to occur, and therefore the whole second positioning hole 12 is directly designed into a gear hole, make and link up through the flank of tooth between the two, the effectual intensity and the stability of guaranteeing its power speed, make its life longer, can realize linking up each other between the hydraulic stem in electric motor rotor and the hydraulic pump, thereby make the direct hydraulic stem to the hydraulic pump of electronic motor drive, thereby realize the electricelectric power supply of excavator, no longer need carry out power take off through diesel engine, make the excavator realize electric drive's purpose, the power take off form of excavator has been changed, make its application scope wider, environmental protection effect is better, and power take off in-process stability is high, power is big.

In a further improvement on the above, the diameter of the base circle of the second positioning hole 12 is 30mm, the number of teeth is 14, the modulus is 2.5, the pressure angle is 20 °, and the displacement coefficient is 0.8.

When power is output, the stress intensity of each tooth is higher, and when the base circle diameter is changed, the tooth number and the modulus are changed in equal proportion.

On the basis, furthermore, be equipped with elastic connecting piece 2 between first gear shaping 3 with second gear shaping 4, elastic connecting piece 2 includes columniform base member 13, the ring is established the separation tooth 14 in the base member 13 outside, separation tooth 14 is located adjacent two first gear shaping 3 with between the second gear shaping 4.

The elastic connecting piece 2 is arranged between the first connector 1 and the second connector 5, the distance between the first connector 1 and the second connector 5 can be lower through the elastic function of the elastic connecting piece 2, even if a certain size deviation exists between the first connector 1 and the second connector, the elastic connecting piece 2 can be automatically clamped and contracted through the clamping force, so that the connection between the first connector 1 and the second connector 5 is tighter, after the elastic connecting piece is arranged, the middle positions of the first connector 1 and the second connector 5 can be filled through the base body 13, the adjacent two first gear teeth 3 and the second gear teeth 4 are spaced through the blocking teeth 14, after the blocking teeth 14 are squeezed, the gap between the first gear teeth 3 and the second gear teeth 4 can be automatically filled, the connection tightness is higher, and the deviation caused by the elastic connecting piece 2 can be automatically absorbed in the operation process, meanwhile, radial, angular and axial deviations are compensated, and the same effect can be achieved no matter clockwise rotation or anticlockwise rotation is achieved.

Further, the accuracy of the first positioning hole 9 is H7, and the elastic connecting piece 2 is made of polyurethane and has a hardness of 98 SHA.

Can realize 0 clearance fit between hydraulic stem and the first locating hole 9, the precision is higher, and simultaneously, elastic connection spare 2's life is longer.

Further, the hoop 6 comprises an adjusting groove 15 formed in the second connector 5 and two threaded holes 7 formed in the outer side of the second connector 5 and used for screwing screws, and an L-shaped groove 8 is formed in one end, located at one end of each threaded hole 7, of the outer side of the second connector 5.

When pressing from both sides tightly through staple bolt 6, adjustment tank 15 is the single groove structure, can make second connector 5 the fastness in the use better, especially when using on the excavator, can be bigger guarantee its power transmission, adopts two locking screw to press from both sides tight fixedly, and the dynamics is better when pressing from both sides tightly, presss from both sides tightly enough to be difficult to appear not hard up phenomenon, compares in single screw and locks stability higher.

Further, the number of the first gear shaping 3 and the second gear shaping 4 is 3 or 4, and the number of the blocking teeth 14 is 6 or 8.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A connecting device for connecting an electric motor with a hydraulic pump, characterized in that: including the first connector that is used for connecting the hydraulic stem, the second connector that is used for connecting electric motor rotor, first connector is including the first locating hole that is used for fixed hydraulic stem, establish keyway on the first locating hole, establish connector one side with the pinhole of keyway intercommunication, establish the first gear shaping of first connector one end inserts in the first locating hole the hydraulic stem passes through round pin axle fixed connection in the pinhole, the second connector include with the second gear shaping of first gear shaping lock, establish be used for connecting in the second connector electric motor rotor's second locating hole, establish be used for right on the second connector the second locating hole is reduced and is pressed from both sides tight staple bolt, the second locating hole is the gear hole, adopt gear connection between second connector and the electric motor rotor.

2. A connecting device for connecting an electric motor and a hydraulic pump according to claim 1, characterized in that: the diameter of a base circle of the second positioning hole is 30mm, the number of teeth is 14, the modulus is 2.5, the pressure angle is 20 degrees, and the displacement coefficient is 0.8.

3. A connecting device for connecting an electric motor and a hydraulic pump according to claim 1, characterized in that: first gear shaping with be equipped with elastic connecting piece between the second gear shaping, elastic connecting piece includes that columniform base member, ring establish the separation tooth in the base member outside, the separation tooth is located adjacent two first gear shaping with between the second gear shaping.

4. A connecting device for connecting an electric motor and a hydraulic pump according to claim 3, characterized in that: the precision of the first positioning hole is H7, the elastic connecting piece is made of polyurethane material, and the hardness is 98 SHA.

5. A connecting device for connecting an electric motor and a hydraulic pump according to claim 1, characterized in that: the staple bolt is including establishing an adjustment tank on the second connector, establishing the second connector outside is used for two screw holes that the screw was used for screwing, the second connector outside is located the one end of screw hole is equipped with L type recess.

6. A connecting device for connecting an electric motor and a hydraulic pump according to claim 3, characterized in that: the number of teeth of the first gear shaping and the second gear shaping is 3 or 4, and the number of the blocking teeth is 6 or 8.