CN111591089B

CN111591089B - Electric tricycle axle

Info

Publication number: CN111591089B
Application number: CN202010448916.9A
Authority: CN
Inventors: 梁景富
Original assignee: Taizhou Jinhao Axle Co ltd
Current assignee: Taizhou Jinhao Axle Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-10-22
Anticipated expiration: 2040-05-25
Also published as: CN111591089A

Abstract

The invention discloses an electric tricycle axle, and relates to an electric tricycle axle, which has the technical scheme main points that: the novel brake comprises a housin, the semi-axis, wheel hub, the brake ware, the reduction tooth group, driving motor, be equipped with the connecting axle in the casing, the connecting axle is including section and the spacing section of sliding, the section of sliding is equipped with the connecting strip, the casing is equipped with the piece of sliding, the brake ware is equipped with pressure sensor, the casing is equipped with electro-magnet one, a controller, the piece of sliding is equipped with the magnetic path, the casing is equipped with electro-magnet two, the notch of spread groove is circular, the tank bottom is the square, the cross sectional shape of spread groove is followed the notch and is gradually changed to the square by circular to the direction of tank bottom, the section of sliding is including finely tuning the section, the section of sliding is equipped with the butt ring. The reduction gear set is not easy to damage in emergency braking by arranging the connecting shaft, the sliding seat and the electromagnet; the second electromagnet is arranged, so that the connecting shaft can be separated from the half shaft more quickly; through setting up spread groove, fine setting section, the reset of connecting axle after the emergency brake of being convenient for.

Description

Electric tricycle axle

Technical Field

The invention relates to the technical field of electric vehicle accessories, in particular to an axle of an electric tricycle.

Background

At present, the axle of a motor vehicle (electric vehicle) is mainly connected with a frame through a suspension, and two ends of the axle are used for mounting wheels. The function of the device is to bear the load of the automobile and maintain the normal running of the automobile on the road.

Fig. 1 shows a conventional vehicle axle including a housing 1, a half shaft 2, a hub 4, a brake 5, a reduction gear set 6 disposed inside the housing 1, and a driving motor 7 for operating the reduction gear set 6.

The above prior art solutions have the following drawbacks: when a fast-running vehicle is braked emergently, a hub and a half shaft are locked suddenly, a transmission mechanism in an axle is driven by a motor to rotate, and a gear in the axle, which is in contact with the half shaft, is impacted greatly, so that the gear in the transmission mechanism is damaged or damaged easily.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an axle of an electric tricycle, which can reduce the damage of a transmission mechanism when emergency braking is carried out.

The technical purpose of the invention is realized by the following technical scheme: an electric tricycle axle comprises a shell, a half shaft, a wheel hub, a brake, a speed reduction gear set and a driving motor, wherein a connecting shaft used for connecting the half shaft and the speed reduction gear set is arranged in the shell, the connecting shaft comprises a sliding section and a limiting section, the limiting section is rotationally connected with the speed reduction gear set, two ends of the sliding section are provided with cuboid connecting strips, the two connecting strips are respectively inserted into a connecting groove arranged on the half shaft and a sliding groove arranged at the end part of the limiting section, the length of the sliding groove is along the axial direction of the connecting shaft, the length of the sliding groove is greater than that of the connecting groove, the connecting strips are not completely embedded into the connecting groove, the sliding section is connected into a sliding piece arranged in the shell in a sliding mode through a bearing, the sliding direction of the sliding piece is along the axial direction of the half shaft, the brake is provided with a pressure sensor used for detecting the tight pressure of a brake pad on the brake, the shell is provided with a first electromagnet and a controller used for controlling the first electromagnet to rotate in a magnetic pole reverse direction, the controller is used for receiving a detection signal of the pressure sensor, the sliding piece is provided with a magnetic block, and the first electromagnet is opposite to the magnetic block;

when the compression force detected by the pressure sensor is larger than a preset value, the first electromagnet is controlled by the controller to drive the sliding piece to slide, and the half shaft is separated from the connecting shaft.

By adopting the technical scheme, when the vehicle is emergently braked, the brake pad of the brake is close to the hub to tightly press the hub, the pressure sensor detects the tightening pressure of the brake on the hub and transmits the tightening pressure to the controller, when the tightening pressure is greater than a preset value, the controller controls the current passing through the electromagnet I to be reversed, so that the polarity of the electromagnet I is reversed, the electromagnet I and the magnetic block are mutually exclusive, the sliding piece is driven to slide towards the limiting section instantly, the bearing on the limiting section pushes the sliding section and the sliding piece to move synchronously, the connecting strip slides away from the groove bottom of the sliding groove, the half shaft is separated from the sliding section, the connecting strip does not rotate to be contacted with the groove wall of the sliding groove, when the hub and the half shaft are suddenly stopped under the action of the brake, the motor, the reduction gear set and the connecting shaft can normally rotate to run, and the reduction gear set is not easy to damage a gear caused by impact of the emergency brake, the motor is separated from the speed reduction tooth group and the hub, so that the brake does not need to overcome the relative rotation of the motor and the speed reduction tooth group during braking, and the braking difficulty of the brake on the electric tricycle is reduced.

The present invention in a preferred example may be further configured to: the shell is provided with a second electromagnet, the second electromagnet is positioned on one side, away from the first electromagnet, of the sliding piece, and the magnetic pole of the second electromagnet, facing the sliding piece, is the same as the magnetic pole of the first electromagnet, facing the sliding piece.

By adopting the technical scheme, the acting force of the two pairs of magnetic blocks of the electromagnet has the same direction as that of the acting force of the two pairs of magnetic blocks of the electromagnet, so that the acting force of the two pairs of magnetic blocks of the electromagnet can be enhanced.

The present invention in a preferred example may be further configured to: the first electromagnets are uniformly distributed in a plurality of circumferential directions around the connecting shaft, and a plurality of electromagnets are arranged corresponding to the first electromagnets.

By adopting the technical scheme, the electromagnets II and the electromagnets I are uniformly arranged in a plurality along the circumferential direction of the connecting shaft, so that the resultant force of the electromagnets I and the electromagnets II to each other can be axially offset towards the connecting shaft, and the sliding of the sliding piece is more stable.

The present invention in a preferred example may be further configured to: the shell is made of non-magnetic materials.

By adopting the technical scheme, the non-magnetic-conductive material can avoid the interference of the shell on the magnetic action of the magnets on the first sliding piece and the second sliding piece of the electromagnet.

The present invention in a preferred example may be further configured to: the notch of spread groove is circular, the tank bottom is the square, the cross-sectional shape of spread groove is followed the notch to the direction of tank bottom and is by circular to square gradual change.

Through adopting above-mentioned technical scheme, after emergency brake, personnel close the motor, make speed reduction tooth group stall, personnel accessible outside reset button resets the controller again, make a pair of slide of electro-magnet attract, make the connecting strip this entering spread groove again in, its lateral wall can receive the guide effect of spread groove cell wall after the connecting strip gets into the spread groove, rectify the position of connecting strip, make it to get into the bottom of spread groove again, make the sliding part reset, speed reduction tooth group can move and drive the semi-axis and rotate, make the axle reset.

The present invention in a preferred example may be further configured to: the section of sliding includes with the coaxial fine setting section of self, the fine setting section rotates with the section of sliding to be connected, the section of sliding is equipped with the butt groove, the fine setting section has set firmly the butt piece, the butt piece stretches into the butt inslot, the rotatable lateral wall that makes the butt piece of fine setting section offsets with the butt groove along two cell walls of spread groove circumference and makes the fine setting section can be 90 degrees relatively with the section of sliding.

Through adopting above-mentioned technical scheme, when the lateral wall of connecting strip and spread groove offseted, the connecting strip continues to remove to the tank bottom of spread groove, can receive the guide effect of spread groove cell wall, and the fine setting section makes the section of sliding slightly rotate, adjusts the angular position of connecting strip, makes the connecting strip can slide the bottom of spread groove smoothly.

The present invention in a preferred example may be further configured to: and buffer pads used for abutting against the shell are arranged on the two axial side walls of the sliding part along the sliding section.

Through adopting above-mentioned technical scheme, the blotter can reset and pop out when the sliding part, and the lateral wall and the casing contact of sliding part earlier than, receive the impact force to the sliding part striking casing and cushion, make it not fragile.

The present invention in a preferred example may be further configured to: the sliding section is fixedly provided with a butt ring, an embedding groove for embedding the butt ring is arranged in the sliding piece, and butt beads used for abutting against the butt ring are arranged on the embedding groove along two axial groove walls of the sliding section.

Through adopting above-mentioned technical scheme, the butt pearl can promote the section of sliding with the rampart butt of butt ring when the sliding part slides, makes it keep away from or be close to the semi-axis, for bearing share resistance on the sliding part, reduces the damage of the bearing on the sliding part.

The present invention in a preferred example may be further configured to: the butt bead rotates the setting, the butt bead can't break away from the cell wall of caulking groove.

Through adopting above-mentioned technical scheme, the butt pearl rotates to set up and can roll the rotation when offseting with the support ring, reduces the butt pearl in the rotation contact damage of support ring.

In summary, the invention includes at least one of the following beneficial technical effects:

by arranging the connecting shaft, the sliding seat and the electromagnet, the connecting shaft can be separated from the half shaft during emergency braking, so that the reduction gear set is not easy to damage during emergency braking;

the second electromagnet is arranged, so that the connecting shaft can be separated from the half shaft more quickly;

through setting up spread groove, fine setting section, the reset of connecting axle after the emergency brake of being convenient for.

Drawings

FIG. 1 is a prior art axle for an electric tricycle;

FIG. 2 is a perspective view of an electric tricycle axle according to an embodiment;

FIG. 3 is a sectional view of the embodiment;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is an exploded view of the slip segments, half shafts of the embodiment;

FIG. 6 is a schematic structural diagram of a slip segment of the embodiment.

In the figure, 1, a housing; 11. a controller; 12. an electromagnet I; 13. an electromagnet II; 2. a half shaft; 21. connecting grooves; 4. a hub; 5. a brake; 51. a pressure sensor; 6. a set of reduction teeth; 7. a drive motor; 8. a connecting shaft; 81. a slipping section; 811. a connecting strip; 812. a fine adjustment section; 813. a butt joint groove; 814. a butting block; 815. a butting ring; 82. a limiting section; 821. a chute; 9. a sliding member; 91. a magnetic block; 92. a cushion pad; 93. caulking grooves; 94. and abutting the bead.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, the axle of the electro-tricycle disclosed by the invention comprises a shell 1, a half shaft 2, a hub 4, a brake 5, a reduction gear set 6 and a driving motor 7. The half shaft 2 is rotatably connected with the shell 1 through a bearing, the half shaft 2 is respectively provided with one at two ends of the shell 1, the end part of the half shaft 2, which is positioned outside the shell 1, is fixedly connected with the hub 4, the brakes 5 are fixed at two ends of the shell 1 in the length direction, and a pair of brake pads of the brakes 5 are respectively positioned at two sides of the hub 4.

The connecting shaft 8 used for connecting the half shaft 2 and the speed reduction gear set 6 is arranged in the shell 1, the connecting shaft 8 comprises a sliding section 81 and a limiting section 82, the limiting section 82 is rotatably connected with the shell 1 through a bearing, and the limiting section 82 is rotatably connected with the speed reduction gear set 6.

Referring to fig. 4 and 5, the two ends of the sliding section 81 are provided with connecting strips 811 in a rectangular parallelepiped shape, the connecting strips 811 are located at the middle position of the end surface of the sliding section 81, the two connecting strips 811 are respectively inserted into the connecting groove 21 provided on the half shaft 2 and the sliding groove 821 provided at the end of the limiting section 82 to make the limiting section 82, the notch of the connecting groove 21 is circular, the groove bottom is square, the connecting groove 21 is flared, the sectional shape of the connecting groove 21 gradually changes from circular to square along the direction from the notch to the groove bottom, the end of the connecting strip 811 is embedded into the square section of the connecting groove 21, the sectional size of the connecting strip 811 is the same as the area of the square section of the connecting groove 21, the length direction of the connecting groove 21 and the length of the sliding groove 821 are both along the axial direction of the connecting shaft 8, the section of the sliding groove 821 is the same as the sectional area of the connecting strip 811, and the connecting strips 811 are not completely embedded into the sliding groove 821 to make the connecting strips 811 slide towards the groove bottom of the sliding groove 821, the connecting bar 811 is slidable toward the groove bottom of the slide groove 821 by a distance greater than the length of the connecting groove 21.

The section of sliding 81 is connected in the sliding member 9 that slides and set up in casing 1 through the bearing, the axial of semi-axis 2 is followed to the slip direction of the piece of sliding 9, the outer wall of the section of sliding 81 has set firmly butt ring 815, be equipped with the caulking groove 93 that supplies butt ring 815 embedding in the piece of sliding 9, caulking groove 93 is equipped with a plurality of butt pearls 94 that are used for offsetting with butt ring 815 along two axial cell walls of the section of sliding 81, butt pearl 94 protrusion in caulking groove 93, the cell wall of caulking groove 93 is provided with the mounting groove, the mounting groove is the throat form, butt pearl 94 rotates with the cell wall of caulking groove 93 to be connected, butt pearl 94 can't break away from the cell wall of caulking groove 93.

Referring to fig. 3 and 4, the brake 5 is provided with a pressure sensor 51 for detecting the pressing force of the brake pad on the brake 5 to the hub 4, the housing 1 is fixedly provided with an electromagnet one 12, the controller 11 is used for controlling the magnetic pole of the electromagnet I12 to rotate reversely, the controller 11 is a CPU, the controller 11 is used for receiving a detection signal of the pressure sensor 51, the magnetic block 91 is arranged on the sliding piece 9, the magnetic block 91 penetrates through the sliding piece 9, the electromagnet I12 is opposite to the magnetic block 91, the shell 1 is fixedly provided with the electromagnet II 13, the electromagnet II 13 is controlled by the controller 11, the electromagnet II 13 is positioned on one side of the sliding piece 9, which is far away from the electromagnet I12, the magnetic pole of the electromagnet II 13, which faces the sliding piece 9, is the same as the magnetic pole of the electromagnet I12, which faces the sliding piece 9, the acting force of the electromagnet II 13 on the magnetic block 91 is the same as the acting force of the electromagnet I12 on the magnetic block 91, and the acting force of the electromagnet I12 on the magnetic block 91 can be enhanced.

Two electromagnets I12 are uniformly distributed around the circumferential direction of the sliding section 81, the two electromagnets I12 are symmetrically arranged around the axis of the sliding section 81, and the two electromagnets II 13 are arranged corresponding to the electromagnets I12. The electromagnets one 13 and the electromagnets one 12 are uniformly arranged along the circumferential direction of the sliding section 81, so that the resultant force of the electromagnets one 12 and the electromagnets two 13 to the magnetic block 91 is deviated towards the axis of the sliding section 81, and the sliding of the sliding member 9 is more stable. The first electromagnet 12 and the shell 1 are made of aluminum alloy materials, the shell 1 is made of non-magnetic conducting materials, and the shell 1 is made of materials which avoid the interference of the shell 1 on the magnetic action of the first electromagnet 12 and the second electromagnet 13 on the magnetic block 91 on the sliding piece 9.

Referring to fig. 4 and 6, one end of the sliding section 81 facing the half shaft 2 is a fine adjustment section 812, the fine adjustment section 812 is rotatably connected with the sliding section 81, the fine adjustment section 812 is coaxially arranged with the sliding section 81, the sliding section 81 is provided with a butting groove 813, the length direction of the butting groove 813 is along the circumferential direction of the sliding section 81, the butting groove 813 penetrates through the end of the sliding section 81 along the axial direction of the sliding section 81, the fine adjustment section 812 is fixedly provided with the butting block 814, the butting block 814 extends into the butting groove 813, and the fine adjustment section 812 can rotate to enable the side wall of the butting block 814 to be butted with the two groove walls of the butting groove 813 along the circumferential direction of the connecting groove 21, so that the fine adjustment section 812 and the sliding section 81 can rotate 90 degrees relatively. When the connecting bar 811 abuts against the side wall of the connecting groove 21, the connecting bar 811 continues to move towards the groove bottom of the connecting groove 21, the groove wall of the connecting groove 21 has a guiding inclined plane, the fine adjustment section 812 enables the sliding section 81 to slightly rotate, the angular position of the connecting bar 811 is adjusted, the four corners of the connecting bar 811 move inwards under the guiding action of the guiding inclined plane on the groove wall of the connecting groove 21 and can shift towards the four corners of the square at the bottom of the connecting groove 21, and the connecting bar 811 can smoothly slide to the bottom of the connecting groove 21. The sliding piece 9 is provided with buffering pads 92 which are used for abutting against the shell 1 along two axial side walls of the connecting shaft 8, the buffering pads 92 are connected with two axial side walls of the sliding piece 9 through springs arranged on the sliding piece 9, the axial direction of the springs is along the sliding direction of the sliding piece 9, and the buffering pads 92 can be contacted with the shell 1 before the side walls of the sliding piece 9 contact when the sliding piece 9 resets and pops up, so that the sliding piece 9 is buffered when being impacted with the shell 1, and the sliding piece 9 is not easy to damage.

The implementation principle of the embodiment is as follows: when the vehicle is emergently braked, a brake pad of the brake 5 approaches the hub 4 to tightly press the hub 4, the pressure sensor 51 detects the tightening pressure of the brake 5 on the hub 4 and transmits the tightening pressure to the controller 11, when the tightening pressure is larger than a preset value, the controller 11 controls the current passing through the electromagnet I12 to reverse, so that the polarity of the electromagnet I12 is reversed, the electromagnet I12 and the magnetic block 91 are mutually exclusive, the electromagnet II 13 reverses the magnetic pole of the magnetic block 91 to attract the magnetic block 91, the sliding piece 9 is instantly driven to slide towards the limiting section 82, the bearing and the abutting bead 94 push the sliding section 81 and the sliding piece 9 to synchronously move, the connecting strip 811 deviates from the groove bottom of the sliding groove and slides to the notch of the sliding groove to separate the half shaft 2 from the connecting shaft 8, at the moment, the connecting strip 811 rotates without contacting with the groove wall of the sliding groove, when the hub 4 and the half shaft 2 are stopped under the action of the brake 5, the motor, the reduction gear set 6 and the connecting shaft 8 can normally run, and the reduction gear set 6 is not easy to damage gears in the reduction gear set due to impact caused by the influence of emergency braking;

after emergency braking, personnel close the motor, make the gear group 6 stall that slows down, and personnel accessible outside reset button resets controller 11 again, makes electro-magnet one 12 attract the slide, electro-magnet two 13 repeals the slide, makes connecting strip 811 this entering spread groove 21 again in, offsets with the diapire of spread groove 21, makes sliding 9 reset, and gear group 6 can move and drive 2 rotations of semi-axis, makes the axle resume normally.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides an electric tricycle axle, includes casing (1), semi-axis (2), wheel hub (4), brake ware (5), speed reduction tooth group (6), driving motor (7), characterized by: the connecting shaft (8) used for connecting the half shaft (2) and the speed reduction gear set (6) is arranged in the shell (1), the connecting shaft (8) comprises a sliding section (81) and a limiting section (82), the limiting section (82) is rotationally connected with the speed reduction gear set (6), connecting strips (811) in a cuboid shape are arranged at two ends of the sliding section (81), the two connecting strips (811) are respectively inserted into a connecting groove (21) arranged on the half shaft (2) and a sliding groove (821) arranged at the end part of the limiting section (82), the length of the sliding groove (821) is along the axial direction of the connecting shaft (8), the length of the sliding groove (821) is greater than that of the connecting groove (21), the connecting strips (811) are not completely embedded into the connecting groove (21), the sliding section (81) is connected into a sliding piece (9) arranged in the shell (1) in a sliding mode through a bearing, and the sliding direction of the sliding piece (9) is along the axial direction of the half shaft (2), the brake (5) is provided with a pressure sensor (51) for detecting the tight pressure of a brake pad on the brake (5), the shell (1) is provided with a first electromagnet (12) and a controller (11) for controlling the magnetic pole of the first electromagnet (12) to rotate reversely, the controller (11) is used for receiving a detection signal of the pressure sensor (51), the sliding piece (9) is provided with a magnetic block (91), and the first electromagnet (12) is opposite to the magnetic block (91);

when the compression force detected by the pressure sensor (51) is greater than a preset value, the electromagnet I (12) is controlled by the controller (11) to drive the sliding piece (9) to slide, and the half shaft (2) is separated from the connecting shaft (8);

the notch of the connecting groove (21) is round, the groove bottom is square, and the section shape of the connecting groove (21) gradually changes from round to square along the direction from the notch to the groove bottom;

the section of sliding (81) include with the fine setting section (812) of the coaxial setting of self, fine setting section (812) rotate with the section of sliding (81) and are connected, the section of sliding (81) are equipped with butt joint groove (813), fine setting section (812) have set firmly butt joint piece (814), butt joint piece (814) stretch into in butt joint groove (813), fine setting section (812) are rotatable to be made the lateral wall of butt joint piece (814) and butt joint groove (813) along two cell wall offsets of spread groove (21) circumference make fine setting section (812) and section of sliding (81) can turn 90 degrees relatively.

2. The electro-tricycle axle of claim 1, wherein: the shell (1) is provided with a second electromagnet (13), the second electromagnet (13) is located on one side, away from the first electromagnet (12), of the sliding piece (9), and the magnetic pole, facing the sliding piece (9), of the second electromagnet (13) is the same as the magnetic pole, facing the sliding piece (9), of the first electromagnet (12).

3. The electro-tricycle axle of claim 2, wherein: the first electromagnets (12) are uniformly distributed in a plurality around the circumference of the connecting shaft (8), and the second electromagnets (13) are arranged in a plurality corresponding to the first electromagnets (12).

4. The electro-tricycle axle of claim 1, wherein: the shell (1) is made of a non-magnetic material.

5. The electro-tricycle axle of claim 1, wherein: and buffer pads (92) used for abutting against the shell (1) are arranged on two axial side walls of the sliding piece (9) along the sliding section (81).

6. The electro-tricycle axle of claim 1, wherein: the sliding section (81) is fixedly provided with a butting ring (815), an embedding groove (93) for embedding the butting ring (815) is formed in the sliding piece (9), and butting beads (94) used for butting against the butting ring (815) are arranged on the embedding groove (93) along two axial groove walls of the sliding section (81).

7. The electro-tricycle axle of claim 6, wherein: the abutting bead (94) is rotatably arranged, and the abutting bead (94) cannot be separated from the groove wall of the embedding groove (93).